• 专利附录
  • 专利说明
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    • 专利摘要:
    Device for separating liquid from a gas stream in a liquid-injected vacuum pump or compressor, comprising: - two communicating vessels (6) with a bottom plate (7) and a side wall (8) of height H1 and a common part (9) that extends over at least a part of the height H1, which portion (9) is formed by cutting the side wall (8) along the height H1 to form two wall parts and joining the wall parts over at least a part of the height H1; - an inlet opening (2) opposite the common part (9); - at least two bucket-shaped vessels (10) each provided in one of the two communicating vessels (6); - a lid (12) with an outlet opening (4); wherein: at least one of the two bucket-shaped vessels (10) forms a fluid passage (11) between the wall (8) of the communicating vessel (6) and the wall of the bucket-shaped vessel (10) to provide fluid therethrough to flow.
    公开号:BE1023276B1
    申请号:E2016/5084
    申请日:2016-02-02
    公开日:2017-01-19
    发明作者:Niels Gorrebeeck；Andries Desiron；Rudolf Jozef Maria BEUKELAERS；Tomasz MIRECKI；Ruben Pieter Vyvey；Johan Gustaaf K Aerts；Willem Everaert
    申请人:Atlas Copco Airpower,Naamloze Vennootschap；
    IPC主号:
    专利说明:

    Device for separating liquid from a gas stream coming from a liquid-injected vacuum pump or compressor.
    This invention relates to a device for separating liquid from a gas stream in a liquid-injected vacuum pump or compressor, the device comprising the following: two communicating vessels with a bottom plate and a side wall extending from the bottom plate, and a has a height H1, the two vessels having a common portion extending over at least a portion of the height H1, the common portion being formed by cutting the side wall along the height H1 so that two wall portions are formed and uniting of the wall parts over at least a part of the height H1; an inlet opening located on the side opposite the common part; at least two bucket-shaped vessels, each of which is present in one of the two communicating vessels, and a lid which is opposite the bottom plate and which has an outlet opening.
    Devices for separating solid or liquid impurities from a fluid stream are commonly used in vacuum systems. Some examples can be found in the field of vacuum cleaners, such as in US 2010 / 000.185 Al in the name of LG Electronics INC or US 2,546,246 A in the name of Prat Daniel Corp., or in the field of the removal of air contaminants, such as particulate materials or acid gases from air, such as in US 3,912,469 A in the name of Lone Star Steel CO.
    The above examples describe devices that include cyclonic systems that are arranged in parallel and that have a common air flow inlet. After passing through the inlet opening, the stream is passed through the parallel arranged cyclones, which remove the impurities due to the circularly induced flow. The impurities are typically allowed to fall down under the influence of gravity, after which they are collected at the bottom of each cyclone. The purified air is directed to an outlet, which is typically on a side opposite the impurity collector, and further used in the system.
    When such systems are tested for inclusion in a vacuum pump or a compressor for removal of liquid from a gas stream, several drawbacks are found, such as the size of the system.
    In the case of, for example, a vacuum pump whose purpose is to achieve the lowest possible pressure value at the outlet, the volume occupied by such a system would be too large.
    Another established drawback is that it is not possible to predict the behavior of the fluid. Tests have shown that for such a configuration, the fluid does not use the two cyclones at the same time, even if they have a common inlet. Accordingly, the flow will take the route of one cyclone or the other, depending on which of the two cyclones has a lower pressure value, making it impossible to change the parameters of the system, such as the optimum dimensions of different components, predict or calculate.
    Another disadvantage of such systems is the fact that in a vacuum pump or a compressor the filtration for different phases of the fluid, such as solid, liquid, vapor or a combination thereof, must be achieved depending on the pressure at the inlet of the vacuum pump or at the outlet of the compressor is reached. Because a calculation of the system parameters is not possible, such systems would not make it possible to use them to obtain the required results for all operating pressures.
    Yet another drawback is that such configurations are unable to maintain a good quality of the fluid for a good fluid injection. Accordingly, the systems indicated do not maintain a continuous flow of liquid in the impurity collector, thereby allowing different temperature zones to form and potentially solid impurities to be deposited in the collector that could potentially cause clogging of the vacuum pump or compressor.
    In view of the aforementioned drawbacks, it is an object of the present invention to provide a system that allows an overall reduction of the area occupied by the vacuum pump or the compressor.
    It is another object of the present invention to provide a system that allows a more accurate calculation of the system parameters, such as the optimum size of various components and the liquid concentration at the outlet of the liquid separator.
    Yet another object of the present invention is to maintain a constant temperature of the collected fluid and, consequently, a good quality of the collected fluid for its further use in fluid injection.
    The present invention solves at least one of the above and / or other problems by providing a device for separating liquid from a gas stream in a liquid-injected vacuum pump or compressor, the device comprising the following: - two communicating vessels with a bottom plate and a side wall extending from the bottom plate and having a height H1, the two vessels having a common part extending over at least a part of the height H1, the common part being formed by cutting out the side wall along the height H1 so that two wall parts are formed and joining the wall parts over at least a part of the height H1; an inlet opening located on the side opposite the common part; - at least two bucket-shaped vessels, each of which is provided in one of the two communicating vessels; - a lid comprising an outlet opening, which in this case is preferably situated on the side opposite the bottom plate; and wherein: at least one of the two bucket-shaped vessels forms a fluid passage between the wall of the communicating vessel and the wall of the bucket-shaped vessel to cause a fluid to flow therethrough.
    Namely, by providing the two communicating vessels, not only is the inlet opening common, but also a common space is formed for collecting the fluid from fluid flowing through the fluid passage of one of the two communicating vessels and the fluid that is collected from the fluid flowing through the other communicating vessel.
    Because of such a common space, the liquid dripping from the fluid stream creates a continuous movement in the collected liquid, which prevents impurities from depositing on the bottom plate. Another advantage of such a motion created is the fact that a constant temperature of the fluid is maintained.
    By keeping the temperature constant, the components of the vacuum pump or of the compressor located downstream of the liquid barrier are protected. If the temperature of the collected liquid is higher than a set value, then the system will therefore preferably guide the collected liquid through a cooling section and possibly through a filtration section. If the temperature of the collected fluid does not exceed the set value, the system will direct the collected fluid to the vacuum pump or compressor to perform fluid injection. Without being limited thereto, the system will preferably first pass the liquid through a filtration section and only then to the vacuum pump or compressor to perform liquid injection.
    If the collected liquid had different temperature zones, oscillations would occur in the system, which would lead to a shorter service life of different components of the vacuum pump or of the compressor and therefore to higher maintenance costs.
    Due to the design of the two communicating vessels, the fluid flowing through the inlet port is split into two streams at all times. Tests have shown that such behavior is achieved regardless of the workload. As a result, the pressure values in the two communicating vessels will be approximately the same, meaning that the fluid would not flow exclusively through one of the two possible routes, but the fluid flow would be split over the two communicating vessels, thereby increasing efficiency and allowing more accurate calculation. the system parameters are made, such as the dimensions of various components and the liquid concentration at the outlet of the liquid separator.
    Because the flow is split into two approximately equal flows, the area occupying the total vacuum pump or compressor can be reduced, allowing for easier transport, lower production costs and better results with regard to liquid filtration.
    In the context of the present invention, it should be understood that the cover may also be positioned so as to cover a portion of the side wall that in this case would comprise the outlet opening.
    The design features of the current device ensure that a significant amount of liquid is collected in the volume defined between the bottom plate and the bucket-shaped vessels over the height ΔΗ (ΔΗ = Η1-Η2). In a preferred embodiment, the liquid is allowed to collect in at most 90% of the volume in order to achieve good results.
    In a preferred embodiment according to the present invention, at least one of the two bucket-shaped vessels has a height H 2, which is at least 10% smaller than H 1.
    In a preferred embodiment, at least one of the two bucket-shaped vessels comprises one or more holes at the bottom for fluid to flow therethrough. Because such holes will determine the route that the fluid will have to take to leave the liquid separator, the fluid will follow the fluid passage between the bucket-shaped vessels and the wall of the communicating vessels in a roughly circular motion until it travels to the bottom of the bucket -shaped barrel. When the flow reaches the zone between the bottom plate and the bottom of the bucket-shaped vessels, it will flow through the one or more holes and further through the outlet opening. Due to the circular movement, the liquid will be removed due to the mechanical impact of the liquid particles with the side walls of the communicating vessels and the wall of the bucket-shaped vessel due to the action of the centrifugal force and the gravitational force and will settle on the bottom plate collect.
    Preferably, each of the two bucket-shaped vessels comprises one or more holes. Due to such a design feature, the efficiency of the system is increased.
    In a preferred embodiment of the present invention, the device further comprises a liquid drain on the side wall of the two communicating vessels.
    The bottom plate of the two communicating vessels preferably creates a slope with in a vertical position of the device the lowest point of contact with the side wall on the side comprising the liquid discharge, and the highest point of contact with the side wall on the opposite side.
    It should be understood that by "the lowest point of contact with the side wall" is meant the point of contact which is closest to the location in the communicating vessels where liquid separated during use of the device is naturally under collects the influence of gravity and that the "highest point of contact with the side wall" refers to the point of contact being chosen furthest from this location, such that a slope is created.
    Because of such a slope, the liquid is more easily guided to the liquid discharge, which ensures that a good quality of the liquid is retained. Furthermore, a continuous flow of liquid in the two communicating vessels is easily maintained, which eliminates the risk of impurities depositing on the bottom plate,
    The present invention further relates to a method for separating liquid from a gas stream in a liquid-injected vacuum pump or compressor system, the method comprising the following steps of: - providing two communicating vessels with a bottom plate and side walls extending from extend the bottom plate and have a height H1, the two vessels having a common portion extending over at least a part of the height H1, the common portion being formed by cutting the side wall along the height H1 so that two wall parts are formed and joining the wall parts over at least a part of the height H1 and placing the common part on the side opposite an inlet opening; - providing at least one bucket-shaped vessel in each of the two communicating vessels; the method further comprising the steps of: - providing fluid passage between the wall of each of the two communicating vessels and the wall of each of the two bucket-shaped vessels to allow fluid flow therethrough; - directing a fluid stream through the inlet port and splitting the fluid stream from the inlet port into two streams driven through the fluid passage; - collecting the liquid dripping from the fluid flowing through the two communicating vessels onto the bottom plate; and - providing a lid that includes an outlet opening, which in this case is preferably provided on the side opposite the bottom plate, and controlling the fluid passing through the fluid passage through the outlet opening.
    With the insight to better illustrate the features of the invention, a preferred layout of an apparatus for separating liquid from a gas stream and associated method according to the present invention is described below by way of example, without any limiting nature, is shown in the accompanying drawings, in which: Figure 1 schematically shows a vacuum pump or compressor comprising a device according to the present invention; Figures 2 and 4 schematically show a device according to the present invention for separating liquid from a gas stream; figures 3 and 5 show a cross-section along the lines III-III and V-V in figure 2; Figure 6 shows a rotated view of Figure 5; Figures 7 and 8 illustrate an alternative embodiment of the device shown in Figure 5; Figure 9 represents yet another embodiment of the device shown in Figure 6; Figure 10 schematically shows a device for separating liquid from a gas stream according to another embodiment of the present invention; Figures 11 and 12 schematically show a cross-section along the lines XI-XI and XII-XII in Figure 10.
    Figure 1 shows a system comprising a device 1 for separating liquid from a gas stream, with an inlet opening 2 connected to the outlet 3 of a vacuum pump and an outlet opening 4, which can further be connected to an external network 5 '. The inlet of the vacuum pump is further connected to an external process 5.
    If the system were to include a compressor instead of a vacuum pump, the component 5 would represent an inlet fliter of such a compressor, while reference number 3 would represent the outlet of the compressor and element 5 'would represent the external process and / or a pressure vessel .
    The device 1 for separating fluid from a fluid in a vacuum pump or a compressor (Figure 2) comprises two communicating vessels 6 with a bottom plate 7 and side walls 8 running from the bottom plate 7 and having a height H1, the two vessels 6 have a common portion 9 (Figure 3) extending over at least a portion of the height H1, the common portion 9 being formed by cutting the side wall 8 along the height H1 so that two wall portions are formed and the joining of the wall parts over at least a part of the height H1. The device 1 further comprises an inlet opening 2 which is situated on the side opposite the common part 9.
    At least one bucket-shaped vessel 10 is provided in each of the two communicating vessels 6. Preferably at least one of the bucket-shaped vessels 10 makes it possible to form a fluid passage 11 between the side wall of the communicating vessel 6 in which the bucket-shaped vessel 10 is provided and the wall of the bucket-shaped vessel 10.
    Because the inlet opening 2 is situated on the side opposite the common part 9, a distance y arises between the inlet opening 2 and the common part 9.
    Accordingly, during operation of the system, after the fluid passes through the inlet port 2, it will travel the distance y and split through the common portion 9 into two separate streams.
    Without being limited thereto, such a device 1 or liquid clarifier will preferably be located downstream of the vacuum pump and / or downstream of the compressor in order to achieve a gas stream with a very high purity, wherein such a gas stream is further used in an external network 5 'or an external process 5.
    The distance y plays an important role in achieving efficient liquid separation regardless of the operating pressure, as will be explained later.
    Therefore, when the vacuum pump operates in the high vacuum range, the fluid flow entering the liquid separator will have a very low speed. In such a case, while the fluid travels the distance y, a first liquid separation is achieved because part of the liquid falls directly onto the bottom plate 7 under the influence of gravity. The remainder of the fluid is further split by the common portion 9 into two flows.
    Further on, the fluid is passed through the fluid passage 11, whereby a further separation of fluid is achieved because of the mechanical impact of the fluid particles with the side walls 8 of the communicating vessels 6 and the wall of the bucket-shaped vessel 10 as a result of the operation of the centrifugal force and the gravity acting on the liquid particles.
    Therefore, as soon as the fluid stream reaches the bottom of the bucket-shaped vessels 10, the majority of the liquid particles, typically 90 to 95%, will be removed from the gas stream and collected on the bottom plate 7.
    The fluid passage 11 preferably has such a configuration that a liquid material flowing through it is passed through the outlet opening 4 and is further used in the external network 5 'if the system comprises a vacuum pump, or is used in the external process 5 if the system a compressor.
    The outlet opening 4 is preferably located on a cover 12 (Figure 4). The cover 12 can for instance be placed opposite the base plate 7 or on the side wall 8 so that it covers at least a part thereof. In this case, the cover 12 is preferably located on the side opposite the bottom plate 7, covering at least a part of the surface of the two communicating vessels 6.
    Tests have shown that when the vacuum pump operates in the high vacuum range, the fluid entering the fluid passage 11 reaches the required purity in the first part of the passage because the velocity of such fluid is low enough and the gravity acting on the fluid particles is sufficient is. In such a case, no vortex is produced in the two communicating vessels 6, but simply a conduction of the fluid through the passage 11. It is also noted that at such high vacuum levels, the fluid entering the inlet opening 2 contains for the most part liquid particles.
    When the vacuum pump operates at lower vacuum levels, the fluid entering the inlet port 2 comprises liquid particles, particles in a vaporous and gaseous state. Such fluid has a higher speed than when the vacuum pump operates in a high vacuum range, which determines the formation of vortexing in the two communicating vessels 6 while the fluid flows through the passage 11. Furthermore, it is considered that the amount of dripping liquid while the fluid travels the distance y between the inlet opening 2 and the common portion 9 is smaller than for the high vacuum range. For such a case, the majority of the liquid particles are removed from the gas stream as the fluid flows through the passage 11, due to the mechanical impact with the walls, the centrifugal force and the gravity acting on the liquid particles, as explained above. Such an operating principle also applies to the case in which the device 1 comprises a compressor and to the entire operating range of such a compressor.
    Therefore, when the fluid reaches the lowest point of the bucket-shaped vessels 10, the liquid is separated from the gas stream and the required purity is achieved.
    In an embodiment of the present invention, each of the two communicating vessels 6 includes, but is not limited to, an outlet tube that is further connected so that the common outlet opening 4 is created.
    Because a portion of the fluid collected on the bottom plate 7 while the fluid travels the distance y and a portion of the fluid is collected while the fluid flows through the passage 11, the temperature of the fluid collected during the entire time the vacuum pump or the compressor is operating at an approximately constant level. Furthermore, when the vacuum pump or compressor is started, such a structural feature will allow the temperature of the oil collected to rise more easily.
    Because the temperature of the collected liquid is kept at a substantially constant level, a good mixture of the liquid is achieved while such a liquid is collected, which ensures a good quality of the collected liquid during the time that the vacuum pump or the compressor functions.
    If the temperature of the collected liquid were not kept about constant, there would be an increased risk of condensate being formed, which would affect the results of the liquid separator and furthermore the functioning of the vacuum pump or compressor when the liquid is recycled.
    In the context of the present invention, it should be understood that a vacuum pump or a compressor may be of a type selected from the group consisting of a single-screw compressor, a double-screw compressor, a cochlea housing compressor, a turbo-compressor, a single-screw vacuum pump , a twin-screw vacuum pump, a single-toothed vacuum pump, a double-toothed vacuum pump, a claw-vacuum pump, a cochlea vacuum pump, a turbo-vacuum pump, a screw-vacuum pump, a sliding vane vacuum pump, etc.
    In a preferred embodiment, the lid 12 is placed to cover the at least two bucket-shaped vessels 10 and the two communicating vessels 6 on the side opposite the bottom plate 7.
    Because the liquid separator according to the present invention has a common inlet opening 2 and a common outlet opening 4, as previously described, the two communicating vessels 6 do not work as two vessels connected in parallel, but as one vessel in which the flow is divided into two flows .
    In another embodiment of the present invention, at least one of the two bucket-shaped vessels has a height H2 that is at least 10% smaller than H1.
    Such a structural feature allows the fluid to travel a sufficiently long distance around the bucket-shaped vessels 10 so that the liquid is removed from the flow, but at the same time it ensures that the device 1 keeps a quantity of liquid on the bottom plate 7 at a level that is low enough so that there is no risk of contamination due to the potential return of the gas stream and the collected liquid before it is passed after the outlet opening 4.
    In the context of the present invention, it is to be understood that the height H2 of the at least two bucket-shaped vessels 10 may differ from each other. Thus, one of the two vessels 10 can have a height H2 that is greater or smaller than the height of the other bucket-shaped vessel 10. Furthermore, the difference between the height H2 of at least one of the two bucket-shaped vessels 10 and the height H1 of the two communicating vessels 6 differ 10%.
    Without being limited thereto, the two communicating vessels 6 preferably have the same height H1 and / or the at least two bucket-shaped vessels 10 have the same height H2.
    In the context of the present invention, it should be understood that there may be more than one bucket-shaped vessel per one of the two or even for each of the two communicating vessels.
    In a preferred embodiment according to the present invention, the device 1 comprises means for guiding the fluid flow to the outlet opening 4 after the fluid travels at least a part of the height H2 of each of the two bucket-shaped vessels 10.
    The means may preferably be in the form of a hose or a tube or the like. More preferably, at least one of the two bucket-shaped vessels 10 includes one or more holes 13 at the bottom (FIG. 5, FIG. 6) to allow fluid to flow therethrough and direct it to the outlet port 4.
    In another preferred embodiment, the device 1 further comprises at least one liquid filter 14 installed in each of the one or more holes 13. Because the fluid flow travels the distance y, the fluid passage 11, which surrounds the bucket-shaped vessels 10, and is then passed through at least one fluid filter 14 before it reaches the outlet opening 4, the device 1 preferably reaches a fluid concentration at the outlet opening 4 level of about 5 mg / m3 or less for the entire operating range of the vacuum pump or compressor.
    In another preferred embodiment, each of the at least two bucket-shaped vessels 10 for increased efficiency of the device 1 comprises more than 1 hole, such as at most 6 holes or more, depending on the required capacity of the vacuum pump or compressor and / or or the required concentration of liquid at the level of the outlet opening 4.
    For easy manufacture, the at least two bucket-shaped vessels 10 preferably have a circular or approximately circular cross-section.
    In the context of the present invention, it should be understood that the at least two bucket-shaped vessels 10 can have different diameters or even have a different shape relative to each other, or each of the two communicating vessels 6 can have more than one bucket -shaped vessel 10 with complementary shapes, such that at least a part of the communicating vessel 6 is covered and a fluid passage 11 is created between the wall of the bucket-shaped vessels 10 and the side wall 8 of the communicating vessel 6.
    In another embodiment of the present invention and as can be seen in Figure 10, the bucket-shaped vessels 10 may include a top plate 25 placed in direct communication with the common portion 9 and further include one or more holes 26 for fluid therethrough to flow.
    In the context of the present invention, it is to be understood that the common part 9 is and part of the side walls 8, even if such a common part is formed by one or more additional pieces of material which, for example, by welding, gluing and / or mechanical fixed with screws or bolts, are fixed to the side walls 8.
    In the context of the present invention, it should be understood that the bucket-shaped vessels 10 can be joined to form one vessel 10 (Figure 11).
    If the bucket-shaped vessels 10 comprise such a top plate 25, then preferably, but not limited to, at least one of the bucket-shaped vessels 10 can further comprise a second bottom plate 24 to allow liquid to collect thereon . Preferably, all bucket-shaped vessels 10 comprise such a second bottom plate 24 for collecting liquid thereon. The second bottom plate 24 can be a continuous plate.
    Without being limited thereto, the common portion 9 is preferably positioned between the bottom plate 24 and the top plate 25 and continues beyond the top plate 25.
    In another embodiment of the present invention, the bucket-shaped vessels 10 may further comprise at least one cyclone 27 installed in one of the holes 26. More preferably, the bucket-shaped vessels 10 comprise a cyclone 27 installed in each of the one or more holes 26 (Figures 10 to 12).
    If the bucket-shaped vessels 10 have such a structure, the fluid entering through the inlet opening 2 moves to approximately the level of the top plate 25 before it is passed through the inlet of the at least one cyclone 27.
    In one embodiment of the present invention, each of the bucket-shaped vessels 10 may comprise a plurality of cyclones 27, such as, for example, a number of cyclones 27 selected between six and sixteen. Each of the bucket-shaped vessels 10 preferably comprises nine or twelve cyclones, depending on the capacity of the device 1.
    In the context of the present invention, a cyclone 27 is to be construed as a structure designed to impose a rotational motion on a fluid stream entering there and to separate fluid particles from the fluid stream. Due to the rotating movement and the centrifugal force, the liquid particles come into contact with the walls of the cyclone structure and fall under the influence of gravity. The remaining fluid flow is passed through an outlet of the cyclone structure.
    In another embodiment of the present invention, at least one of the two bucket-shaped vessels 10 includes an extension 28 disposed on the top plate 25 to direct the fluid flow from the inlet port 2 toward the fluid passage 11.
    In the context of the present invention, the extension 28 can be considered a part of the wall of the bucket-shaped vessel 10 or can be considered as an additional element mounted on the top plate 25.
    Without being limited thereto, the extension 28 can preferably be welded, for example, to the top plate 25 such that the fluid passage 11 is formed between the extension 28 and the common portion 9.
    Furthermore, a fluid passage is formed between the side wall 8 of the two communicating vessels 6 and the wall of the bucket-shaped vessels 10, whereby the liquid can drip and fall onto the bottom plate 7. In the context of the present invention, such a fluid passage can be considered become part of the fluid passage 11,
    Preferably, the top plate 25 is attached to the side wall 8 of the communicating vessels 6 in such a way that this forms a non-continuous surface between the space bounded by the wall of the bucket-shaped vessels 10 and the wall 8. of the communicating vessels 6.
    Accordingly, the top plate 25 can be attached by techniques such as welding, bolts or screws or adhesives, etc. Such attachment techniques can be implemented at a specific distance that can be calculated by the design.
    Preferably, each of the two bucket-shaped vessels 10 comprises an extension 28 placed on the top plate 25.
    The extensions 28 of the two bucket-shaped vessels 10 form a guide path for the fluid entering through the inlet opening 2, such as, for example, a tunnel-type structure.
    Because of such extensions 28, the fluid passed through the inlet opening 2 does not have the opportunity to directly reach the cyclones 27, but is guided in the direction of the common portion 9 and the fluid passage 11. Because of such a path, a portion of the fluid from the fluid stream will be collected on the top plate 25 and further guided to be collected on the bottom plate 7 of the two communicating vessels 6.
    As seen in Figure 10, one end of the extension 28 is preferably mounted on the side wall 8 on the side comprising the inlet opening 2 and the other end is mounted on the top plate 25 in the vicinity of the side wall 8, on the side facing the inlet opening 2. The two extensions 28, each mounted on the top plate 25 of one of the two bucket-shaped vessels 10, are installed such that each acts as a barrier between the fluid flowing through the inlet opening 2 and the cyclones 27 which are present in the bucket-shaped vessels 10.
    Without being limited thereto, the extension 28 preferably has a circular curvature and extends beyond the common portion 9.
    Because the extension 28 has a circular curvature, the fluid stream entering through the inlet opening 2 will assume a circular motion as it attempts to reach the inlet of the cyclones 27, which is the amount of liquid separated from the fluid passing through such a path flows enlarged.
    Preferably, the common portion 9 and the extension 28 are approximately parallel to the surface on which both are present, the distance between these two elements defining a fluid passage 11, which helps to partially direct the fluid flow into each of the two communicating vessels 6. lead. Preferably, the two fluid streams entering the fluid passage 11 of the two communicating vessels 6 are approximately the same.
    Preferably, the extension 28 is a continuous extension with a maximum height at the end mounted on the side wall 8 on the side comprising the inlet opening 2, the height of the extension 28 decreasing between the maximum height and a minimum height, wherein the end with the minimum height is mounted on the top plate 25 in the vicinity of the wall 8, lying on the side opposite the inlet opening 2 (Figure 12). Without being limited thereto, the extension 28 can be, for example, in the form of a rib that can be attached to the top plate 25 with fastening means that are placed at certain intervals or can be attached to the top plate 25 over its entire length.
    When the extension 28 has the shape as described above, a minimum pressure drop occurs in the device 1, which leads to a minimum power required by the motor to clean the fluid from the outlet of the cyclones 27 and in the direction from the external network 5 '. Accordingly, the difference between the power required for the motor to direct the flow through the inlet port 2 and the power required to direct the flow of gas in the direction of the external network 5 'is very small, and therefore the device 1 uses the motor in an efficient manner. Moreover, the service life of the engine is extended.
    Tests have shown that if such an extension were to have a constant height, the motor would require more power in order to overcome the back pressure created in the device 1 when the fluid is directed in the direction of the external network 5 '.
    With the current arrangement of the device 1, the fluid entering through the inlet port 2 moves the distance y until the common portion 9 is reached and moves further into the two communicating vessels 6 before the inlet of the cyclones 27 is reached, and due to a such a layout, a significant volume of the liquid present in the fluid stream is already separated therefrom.
    Tests have shown that about 80% to 90% liquid is separated before the fluid reaches the inlet of the cyclones 27. Because such a large volume of liquid is separated in such a portion, it is preferable that the top plate 25 is continuous over this described path and that the liquid collected on the top plate 25 can be guided further and can be collected on the bottom plate 7 of the two communicating vessels 6, from which it can be further evacuated.
    In another embodiment according to the present invention, the top plate 25 for efficient guidance of the collected liquid in the direction of the bottom plate 7 of the two communicating vessels 6 may have an angle of inclination over the described path, or in other words may have an inclination.
    For example, the slope may be about 12% or the slope may be about 14% or higher such that liquid would not stagnate at such a portion but would flow under the influence of gravity and its mass in the direction of a space defined by the wall of the bucket-shaped vessels 10 and the wall 8 of the communicating vessels 6 and further collected on the bottom plate 7.
    In another embodiment of the present invention, the top plate 25, in the space bounded by the extension 28 and the side walls 8, has no slope, or at least no substantial slope. In other words, the top plate 25 where the cyclones 27 are installed has no slope. As a result, the liquid material collected on the top plate 25 during the operation of the device 1 acts as a seal, which is the space bounded above the top plate 25 (where the cyclones 27 are installed) of the space bounded below the top plate 25, between the top plate 25 and the second bottom plate 24. As a result, there is no pressure equalization between the two bounded spaces and as a result, gas will not come from below the cyclones 27 and therefore from the space bounded between the top plate 25 and the common bottom plate 24, in the direction of the outlet of the cyclones 27. In this way the risk of liquid entering the gas stream again is avoided.
    For ease of manufacture, the top plate 25 preferably does not include a slope on its entire surface.
    In another preferred embodiment, the top plate 25 with the cyclones 27 installed thereon creates, but is not limited to, a leakproof barrier between the space bounded below the top plate 25, between the top plate 25 and the second bottom plate 24 and the space bounded above the top plate 25, between the top plate 25 and the side walls 8 of the two communicating vessels 6.
    Tests have shown that the volume of liquid separated by the path bounded by the inlet 2 and the inlet of the cyclones 27 is much larger than the volume of liquid separated by the cyclones 27. Typically, the cyclones 27 separate approximately 9% to 19% of the liquid. Because of this, it would be preferable for the liquid separated by the path bounded by the inlet opening 2 and the inlet from the cyclones 27 to be collected at a different location than the liquid separated by the cyclones 27. As a result, better control of the volume of liquid drained from the two communicating vessels 6 and the two bucket-shaped vessels 10 is maintained. Moreover, the capacity of the means for extracting the liquid from the two modules can be selected differently depending on the typical volume of liquid collected per unit of time.
    In another embodiment according to the present invention, the device 1 further comprises a filter vessel 29 placed between the space bounded by the outlet opening 4 and the common part 9, and on which the cover 12 is preferably installed. The filter vessel 29 comprises a supporting plate 30 which comprises at least one hole for receiving a liquid filter 14 therein.
    Without being limited thereto, the common portion 9 is preferably placed between the top plate 25 and the bearing plate 30.
    Without being limited thereto, the bearing plate 30 preferably comprises a number of holes equal to the number of cyclones 27 present in the bucket-shaped vessels 10 and is further configured to receive a liquid filter 14 in each of the holes .
    The one or more liquid filters 14 can be installed such that the outlet of the liquid material cyclone 27 or one communicates with the inlet of the one or more filters 14, or at a minimum distance from the outlet of the one or more cyclones 14 27 By allowing the outlet of the liquid material cyclone 27 or more to communicate with the inlet of the one or more filters 14, efficient and predictable filtration in the device 1 is ensured.
    In an embodiment according to the present invention, the common part 9 preferably extends over a height that is limited by the space between the top plate 25 and the bearing plate 30 for achieving a better control of the pressure drop in the different parts of the device 1 and for better control of the path of the liquid withdrawn from the fluid flow that is passed through the inlet opening 2.
    In a preferred embodiment of the present invention, the filter vessel 29 comprises one or more liquid filters 14, wherein each of the one or more liquid material liquid filters 14 communicates with each of the one or more cyclones 27.
    In another embodiment of the present invention, depending on the actual position of such a cyclone or cyclones 27, the one or more inlets may be rotated on the top plate 25 with respect to the direction of the fluid flow and / or with respect to each other, in order to control the amount of fluid separated from the fluid stream until such flow reaches the one or more inlets of the one or more cyclones 27. This ensures that the liquid material does not enter directly into the one or more cyclones 27, but that a sufficiently long path is maintained for the fluid flow such that a larger volume of liquid is separated. In such a manner, the one or more cyclones 27 are much more efficient and the size of the device 1 and of the various component elements, such as the bucket-shaped vessels 10 or the one or more cyclones 27, can be reduced to a minimum.
    If the fluid flow were to be allowed to enter directly into the one or more inlets of the one or more cyclones 27, this could increase the risk that the cyclones 27 contain an amount of liquid material that could affect their efficiency , or could even hide it.
    Accordingly, the inlets of the cyclones 27 placed near the end of the extension 28 are preferably oriented such that the fluid cannot enter directly, but continues to follow the circular movement and only after completing an almost complete rotation. the communicating vessels 6 the fluid will enter the cyclones 27. Furthermore, the inlets of the cyclones 27 that are further away from the point where the extension 28 ends are also preferably oriented such that the fluid can enter after it has traveled a sufficiently long distance in the communicating vessel 6.
    In the context of the present invention, it should be understood that such a layout is not restrictive of the implementation of the present invention and that other orientations for the inlets of the cyclones 28 can also be implemented, or that the inlets of such cyclones 28 can all have the same orientation.
    In a preferred embodiment, the inlets of the cyclones 28 are all oriented in the same direction for ease of manufacturing and mounting the cyclones 28, as seen in Figure 10, but may be rotated with respect to the direction of the fluid flowing out the fluid passage 11 and flows into the communicating vessels 6.
    In another embodiment, the filter vessel 29 further comprises means for discharging the liquid collected by the liquid filters 14. The means can be of any type, such as, for example, selected from a group comprising: a one-way valve, a manually operated valve , a hose or a tube, optionally, but not necessarily, connected to a suction device, or the like.
    In another preferred embodiment, the only significant communication path between the bucket-shaped vessels 10 and the outlet opening 4 through the liquid filters 14. This keeps the purity of the fluid flowing through the outlet opening 4 at very high levels.
    Tests have shown that with such a layout, and when the device 1 is used for separating, for example, oil particles from an air flow, purities of the air of about 99.5% or even higher are achieved.
    Depending on the type of vacuum pump or compressor, the liquid may be oil or water or may have a different composition.
    For an even higher efficiency of the liquid clarifier, each of the at least two bucket-shaped vessels 10 and / or the filter vessel 29 comprise a recess 15 on its bottom plate 16, or on the supporting plate 30, for collecting the liquid flowing through the one or more liquid filters 14 are captured and discharged, which further drips on the bottom plate 16, or on the supporting plate 30.
    In another embodiment of the present invention, the one or more fluid filters 14 may be replaced with one or more cyclones 27 that have an inlet tangential to their wall and direct the fluid flow into the cyclone 27 in a circular motion. Due to such a movement, the fluid is removed due to the mechanical impact of the fluid particles with the walls of the cyclones 27, due to the action of the centrifugal force acting thereon and due to gravity, the fluid is dripping at the bottom of the one or more cyclones 27 and the rest of the fluid is passed through an outlet port and further used.
    The liquid separating device according to the present invention further comprises means for removing the liquid from the recess 15 selected from the group comprising a hose or a tube connected to a device 1 which can extract the liquid by suction, a hose or tube to allow gravity to remove the fluid or an outflow opening that includes a one-way valve to allow the fluid to drip onto the bottom plate 7 of the two communicating vessels 6.
    In a preferred embodiment according to the present invention, the bottom plate 7 is a continuous plate which provides a common space for the liquid to be collected from each of the two communicating vessels 6 and from the part y that is bounded by the inlet opening 2 and the common part 9.
    For a higher rigidity of the liquid clarifier and according to one embodiment of the present invention, the device 1 further comprises a side plate 17, which connects the side walls 8 of the two communicating vessels 6 and the inlet opening 2. Without being limited thereto, the liquid clarifier can preferably further comprise a second side plate 18, which connects the side walls 8 of the two communicating vessels 6, on the exterior of the liquid separator, which reinforces the structure where the common portion 9 is formed.
    The side walls 8 preferably form an angle before they come together and form the common portion 9, the angle being, for example, about 90 ° or less.
    For an easy and efficient operation of the liquid separator, the device 1 further comprises means for discharging the collected liquid 19 from the two communicating vessels 6, which are preferably located near the bottom plate 7 along the height H1 of the side wall. 8 or directly on the bottom plate 7 of the two communicating vessels 6.
    The means for discharging the collected liquid 19 can be of any shape selected from the group consisting of a one-way valve, a manually operated valve, a hose or a tube that is possibly but not necessarily connected to a suction device, or the like.
    In another preferred embodiment of the present invention, the bottom plate 7 of the two communicating vessels 6 is positioned so that it forms a slope or an angle if we were to have it cut with the horizontal axis A-A '(Figure 1). The slope preferably has the lowest point of contact with the side wall 8 on the side comprising the liquid discharge 19 and the highest point of contact with the side wall 8 on the opposite side thereof.
    Such a slope helps to produce a continuous flow of liquid, which increases the likelihood that an approximately constant temperature of the collected liquid on approximately the entire surface of the bottom plate 7. Furthermore, in the event that no impurities occur in the collected liquid, they will preferably be led to the liquid discharge 19 and further filtered, which eliminates the risk of clogging of the vacuum pump or compressor.
    In order to enable an easy check or if the liquid separator comprises a manually operated valve, the device 1 further comprises means for checking the level of the liquid that has accumulated on the bottom plate 7 of the two communicating vessels 6. The means for checking the liquid level 20 can preferably be in the form of an outflow opening which comprises at least a partially transparent material, such as for instance glass or transparent plastic material.
    In another embodiment of the present invention, a minimum level of liquid is maintained at all times in the volume defined between the bottom plate and the bucket-shaped vessels over the height ΔΗ (ΔΗ = Η1-Η2), such as, for example, up to the highest point of the oil drain 19, so that gas is not recirculated in the vacuum pump or compressor.
    If the vacuum pump or compressor is an oil-injected vacuum pump or compressor, such a feature eliminates the risk of oil bubbles, an unintended effect when such oil is subsequently injected into the vacuum pump to achieve oil-in-jeetia.
    In another embodiment, the means for monitoring the liquid level may be in the form of at least one sensor capable of producing an electrical signal when the level of liquid material reaches or passes it. The electrical signal can communicate with a user interface or a control panel located on the vacuum pump or compressor or send an alarm signal to a previously indicated electronic device via a wire connection or a wireless transmission medium.
    Tests have shown that such a liquid separator achieves very good results in the entire operating range of the vacuum pump or compressor.
    Because the communicating vessels 6 comprise a common inlet opening 2 and a common outlet opening 4 and because the volume between the bottom plate 7 of the two communicating vessels 6 and the bottom plate 16 of the at least two bucket-shaped vessels 10 over the height ΔΗ (ΔΗ = Η1 ~ Η2) If at least one communicating channel is included between the two communicating vessels 6, the two communicating vessels 6 are not equivalent to two vessels connected in parallel.
    Another advantage of such a structural design is the fact that in the liquid separating device, a liquid pressure and gas pressure equalization between the two communicating vessels 6 and in the volume defined between the bottom plate and the bucket are equalized. shaped vessels 10 over the height ΔΗ (ΔΗ = Η1-Η2) always occur, which ensures a continuous flow of liquid which has collected on the bottom plate 7 and ensures approximately equal utilization of the two vessels 6 at any time.
    Accordingly, after passing through the inlet opening 2, the fluid will always be split by the common portion 9 into two different flows, which will result in approximately equal utilization of both communicating vessels 6. On the other hand, in a liquid clarifier comprising two vessels connected in parallel and having a common inlet opening, the fluid will choose the route with the lowest pressure value and tests have shown that simultaneous utilization of the two vessels independently of a common inlet, does not occur in such a case.
    In another preferred embodiment of the present invention, the two side walls 8 include, but are not limited to, a further cut-out 22 on the side closest to the inlet opening 2 (Figure 8). Such a structural feature ensures the creation of a wider inlet and a possible reduction of the distance y. By creating the cut-out 22, the efficiency of removing liquid over the distance y is increased and at the same time the influence of the cylindrical wall on the fluid flow that is passed through the inlet opening 2 is reduced.
    If such a cutout 22 were not achieved, the fluid flowing through the inlet 2 would be forced to travel a narrower passage over the distance y until the common portion 9 is reached, which affects the velocity and the pressure of the fluid. and provides an unintended effect on the behavior of the entire system.
    If the system comprises a vacuum pump operating in a low vacuum range or a compressor, the distance y can be further reduced because the velocity of the fluid flowing through the inlet 2 is high.
    If the system comprises a vacuum pump operating in a high vacuum range, then it is preferable that the distance y is as large as possible because the velocity of the fluid flowing through the inlet 2 is low.
    In a preferred embodiment, if the distance y is increased, the height of the cut-out 22 will also be increased.
    Without this being necessary, the common portion 9 is preferably placed at a minimum distance x from the side walls 8 (Figure 2) to enable the formation of the fluid passage 11 on the entire outer surface of the bucket-shaped vessels 10. If the inlet opening 2 has a circular shape, the distance x can for instance be approximately half the diameter of the inlet opening 2. It should further be understood that the distance x can be greater or smaller than half the diameter of the inlet opening 2 and that the inlet opening 2 can be of any shape.
    It is preferable to keep the distance x as small as possible so that the vortexes that arise as the fluid flows through the fluid passages 11 of each of the two communicating vessels 6 would not be enhanced.
    In another embodiment of the present invention, the device 1 further comprises an inlet tube 23 with the inlet 2 at one end thereof (FIG. 7, FIG. 8).
    The vacuum pump or compressor preferably further comprises a filter unit 21 (Figure 4) which is used to filter the liquid collected on the bottom plate 7 and further discharged and preferably cooling means (not shown) for lowering the temperature of the collected liquid if necessary. The vacuum pump or compressor preferably further comprises a thermostatic valve (not shown) for passing the collected liquid through the cooling means and further through the filter unit 21 if the temperature of the liquid is higher than a set limit, or directly through the filter unit 21 if the temperature of the liquid does not exceed a set limit. Because the temperature of the collected fluid is kept at a relatively constant value, the thermostatic valve does not fluctuate between the two possible routes.
    The present invention further has for its object to provide a method for separating liquid from a gas stream in a liquid-injected vacuum pump or compressor, wherein the vacuum pump or compressor comprises two communicating vessels 6, the two communicating vessels 6 having a bottom plate 7 and side walls 8 which extend from the bottom plate 7 and have a height H1. The two vessels 6 are provided with a common part 9 which extends over at least a part of the height H1, wherein the common part 9 is formed by cutting the side wall 8 along the height H1 so that two wall parts are formed and unite of the wall parts over at least a part of the height H1 and placing the common part 9 on the side opposite an inlet opening 2. At least one bucket-shaped vessel 10 is provided in each of the two communicating vessels 6.
    The two communicating vessels 6 are furthermore provided with an outlet opening 4 which is situated on the side opposite the bottom plate 7.
    The present method comprises the steps of guiding a fluid flow through an inlet port 2 of the two communicating vessels 6, guiding the fluid through a fluid passage 11 provided between the wall 8 of each of the two communicating vessels 6 and the wall of each of the two bucket - shaped vessels 10, and utilizing the common portion 9 to split the fluid flow from the inlet port 2 into two streams passed through the fluid passage 11.
    Because the liquid is conducted in such a way, liquid will be separated from the gas stream and it will preferably be collected on the bottom plate 7.
    The two communicating vessels 6 are preferably provided with a lid 12 which is placed on the side opposite the bottom plate 7 and which comprises the outlet opening 4. After the fluid passes the fluid passage 11, it is guided through the outlet opening 4.
    In order to achieve a better filtration result, in the embodiment of Figure 9, each of the one or more holes 13 is provided with a liquid filter 14 installed in the one or more holes 13.
    Because the filter 14, after being saturated with liquid, will typically start to drip the liquid onto the external walls of the filter and into the bucket-shaped vessels 10, the vessels 10 are preferably provided with a recess 15 for collecting of the liquid which is captured and discharged by the one or more liquid filters 14. The at least two bucket-shaped vessels 10 are preferably further provided with means for withdrawing the liquid from the recess 15 in order to maintain a proper functioning of the system.
    In another preferred embodiment according to the present invention, at least one of the two bucket-shaped vessels 10 is provided with at least one hole 26 on the top plate 25, each of the at least one hole 26 being designed to receive a cyclone 27 .
    In this case, the method comprises the step of directing the fluid flow through the inlet port 2 of the two communicating vessels 6, splitting the fluid flow with the aid of the common portion 9 into two fluid flows and passing it through the fluid passage 11 of each bucket-shaped barrel 10.
    The fluid passage 11 is preferably provided between the common part 9 and an extension 28 placed on the top plate 25 of the two bucket-shaped vessels 10, the extension 28 acting as a barrier between the fluid flow entering through the inlet opening 2 and the least one cyclone 27 placed on the top plate 25.
    Because of the extension 28, the fluid flowing through the fluid passageway 11 assumes a circular motion and maintains such a motion after leaving the fluid passageway 11 and while in the space bounded by the two communicating vessels 6 and the two bucket-shaped vessels 10 and in which the cyclones 27 are installed. Such a circular movement determines the liquid that is separated from the fluid flow.
    The method preferably further comprises the step of controlling the fluid flow through one or more cyclones 27 mounted on a top plate 25 after the fluid flow has passed the fluid passage 11.
    In another embodiment according to the present invention, each of the at least one hole 26 is provided with a cyclone 27 through which the fluid flow is controlled.
    Preferably, the inlets of the cyclones 27 are rotated with respect to the direction of the fluid flow entering the two communicating vessels 6 such that the fluid flow is allowed to travel a sufficiently long distance before the inlet of the cyclones 27 is reached, as a result of which a larger volume of liquid is separated. Hereby a required purity of the fluid flowing through the outlet opening 4 is maintained.
    Each of the bucket-shaped vessels 10 is preferably provided with a second bottom plate 24 on which the liquid separated by the cyclones 27 can be collected.
    Further, the method preferably includes the step of collecting the fluid dripping from the fluid between the inlet port 2 and the end of the fluid passage 11 on the top plate 25, and further comprising the step of directing the collected fluid onto the bottom plate 7 of the two communicating vessels 6, from which it can be drained in a subsequent step.
    After the fluid leaves the one or more cyclones 27, it is passed through the one or more liquid filters 14. The liquid collected by the cyclones 27 is allowed to drip onto the second bottom plate 24, and the remaining fluid stream is allowed to leave the cyclones 27 through an outlet port.
    Preferably, the method comprises the step in which the fluid flow exiting the cyclones 27 is controlled by at least one liquid filter 14 which directly or indirectly communicates with the outlet of the cyclones 27 for fluid.
    Preferably, each of the cyclones 27 installed on the top plate 25 comprises a fluid filter that is installed such that the fluid exiting through the outlet opening of each cyclone 27 enters directly through an inlet of a fluid filter 14.
    After the fluid flow has passed the liquid filter 14, it is sent through the outlet opening 4.
    In another embodiment according to the present invention, the bucket-shaped vessels 10 are provided with means for removing the liquid collected on the second bottom plate 24.
    The means may be selected from a group comprising: a one-way valve, a manually operated valve, a hose or a tube, optionally, but not necessarily, connected to a suction device, or the like.
    To keep the system within operating parameters, the method further comprises the step of removing at least a portion of the fluid collected in the two communicating vessels 6 using a fluid drain 19. Such fluid is preferably fed to the vacuum pump. or compressor recirculated and used, for example, to achieve fluid injection.
    The present invention is in no way limited to the embodiments described as examples and shown in the drawings, and the device for separating liquid from a gas stream can be realized in all types of variants without departing from the scope of the invention.
    权利要求:
    Claims (29)
    [1]
    Conclusions.
    A device for separating liquid from a gas stream in a liquid-injected vacuum pump or compressor, the device (1) comprising the following: two communicating vessels (6) with a bottom plate (7) and a side wall (8) extending from the bottom plate (7) and having a height H1, the two vessels (6) having a common portion (9) extending over at least a portion of the height H1, forming the common portion (9) by cutting the side wall (8) along the height H1 so that two wall parts are formed and joining the wall parts over at least a part of the height H1; an inlet opening (2) located on the side opposite the common part (9); at least two bucket-shaped vessels (10) which are each provided in one of the two communicating vessels (6); a lid (12) comprising an outlet opening (4); characterized in that: at least one of the two bucket-shaped vessels (10) forms a fluid passage (11) between the wall (8) of the communicating vessel (6) and the wall of the bucket-shaped vessel (10) allowing a fluid to flow therethrough.
    [2]
    Device according to claim 1, characterized in that at least one of the two bucket-shaped vessels (10) has a height H2 which is at least 10% smaller than H1.
    [3]
    Device according to claim 1, characterized in that t and at least one of the two bucket-shaped vessels (10) comprises one or more holes (13) at the bottom to allow fluid to flow therethrough.
    [4]
    Device according to claim 1, characterized in that at least one of the two bucket-shaped vessels (10) comprises a top plate (25) which is placed in direct communication with the common part (9) and furthermore one or more holes (26) for allowing fluid to flow therethrough.
    [5]
    The device according to claim 2, characterized in that the device 1 further comprises a liquid filter (14) installed in each of the one or more holes (13).
    [6]
    Device according to claim 4, characterized in that the device (1) further comprises a cyclone (27) installed in each of the one or more holes (26).
    [7]
    Device according to claim 2, characterized in that the bucket-shaped vessels (10) have a circular cross-section.
    [8]
    Device according to claim 3, characterized in that at least one of the two bucket-shaped vessels (10) further comprises a recess (15) for collecting the liquid discharged through the one or more liquid filters (14).
    [9]
    The device of claim 6, further comprising means for removing the fluid from the recess (15).
    [10]
    The device of claim 1, further comprising a continuous bottom plate (7) and a side plate (17) that connects the two communicating vessels (6) and includes the inlet port (2).
    [11]
    Device according to claim 1, characterized in that the angle formed by the two united walls (8) forming the common part (9) is approximately 90 ° or smaller.
    [12]
    The device of claim 1, further comprising a fluid drain (19) on the side wall (8) of the two communicating vessels (6).
    [13]
    Device according to claim 8, characterized in that the bottom plate (7) of the two communicating vessels (6) forms a slope with the lowest point of contact with the side wall (8) on the side comprising the liquid discharge (19) and the highest point of contact with the side wall (8) on the opposite side.
    [14]
    The device of claim 1, further comprising an outflow opening (10) for checking the level of the liquid in the two communicating vessels (6).
    [15]
    The device of claim 1, further comprising a filter vessel (29) disposed between the outlet opening (4) and the common portion (9).
    [16]
    Device according to claim 1, characterized in that at least one of the two bucket-shaped vessels (10) comprises an extension (28) which is placed on the top plate (25) to allow the fluid flow from the inlet opening (2) into the direction of the fluid passage (11).
    [17]
    Device according to claim 16, characterized in that each of the two bucket-shaped vessels (10) comprises an extension (28) that is placed on the top plate (25).
    [18]
    Device according to claim 16, characterized in that one end of the extension (28) is mounted on the side wall (8) on the side comprising the inlet opening (2), and the other end is mounted on the top plate (25) in near the side wall (8), lying on the side opposite the inlet opening (2).
    [19]
    Device according to claim 16, characterized in that the extension (28) is a continuous extension, which has a maximum height at the end that is fixed on the side wall 8 on the side comprising the inlet opening (2), the height of the extension decreases between the maximum height and a minimum height, the minimum height being placed at the end that is mounted on the top plate (25) in the vicinity of the wall (8) on the side opposite the inlet opening (2).
    [20]
    Device according to claims 6 and 15, characterized in that the flash vessel (29) comprises one or more liquid filters (14), wherein each of the one or more liquid filters (14) is in communication with each of the one or more cyclones (27).
    [21]
    A method of separating liquid from a gas stream into a liquid-injected vacuum pump or compressor, the method comprising the steps of: providing two communicating vessels (6) with a bottom plate (7) and side walls (8) that start from run the bottom plate (7) and have a height H1, the two vessels (6) having a common part (9) extending over at least a part of the height H1, the common part (9) being formed by cutting the side wall (8) along the height H1 so that two wall parts are formed and joining the wall parts over at least a part of the height H1 and placing the common part (9) on the side opposite an inlet opening ( 2); providing at least one bucket-shaped vessel (10) in each of the two communicating vessels (6); characterized in that the method further comprises the steps of: providing a fluid passage (11) between the wall (8) of each of the two communicating vessels (6) and the wall of each of the two bucket-shaped vessels (10) to cause a fluid to flow therethrough; directing a fluid stream through the inlet port (2) and splitting the fluid stream from the inlet port (2) into two streams that pass through the fluid passage (11); collecting the liquid dripping from the fluid flowing through the two communicating vessels (6) on the bottom plate (7); and providing a lid (12) that includes an outlet port (4) and controlling the fluid passing through the fluid passage (11) through the outlet port (4),
    [22]
    A method according to claim 21, characterized in that it further comprises the step of providing at least one hole (13) at the bottom of at least one of the two bucket-shaped vessels (10) to direct the flow of fluid therethrough .
    [23]
    The method of claim 21, wherein further a fluid filter (14) is provided for each of the one or more holes (13) and the fluid filter (14) is installed in the hole (13).
    [24]
    The method according to claim 21, characterized in that it further comprises the step of directing the fluid flow through one or more cyclones (27) mounted on a top plate (25) after the fluid flow has passed the fluid passage (11).
    [25]
    The method according to claim 24, characterized in that it further comprises the step of collecting the liquid dripping from the fluid between the inlet opening (2) and the fluid passage (11) on the top plate (25).
    [26]
    The method of claim 25, further comprising the step of directing the collected liquid onto the bottom plate (7) of the two communicating vessels (6).
    [27]
    The method of claims 23 and 24, further comprising the step of passing the fluid flow through the fluid filters (14) after it has left the one or more cyclones (27).
    [28]
    The method of claim 23, further comprising providing a recess (15) in the one or more bucket-shaped vessels (10) for collecting the fluid discharged through the fluid filters (14) and providing means for withdrawing the liquid from the recess (15).
    [29]
    Method according to claim 12, characterized in that the method further comprises the step of removing at least a part of the liquid collected on the bottom plate (7) of the two communicating vessels (6) through a liquid discharge (19).
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    同族专利:
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    BE1023276A1|2017-01-19|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US201562155014P| true| 2015-04-30|2015-04-30|
    US62/155,014|2015-04-30|
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