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    • 专利摘要:
    Fluid flow control and cut-off device in non-rigid pipes and its operating method. The present invention refers to a device for controlling and shutting off the flow of fluids in non-rigid pipes, where in said pipes there is a flow of fluid inside them at a certain pressure, making it necessary at a certain time of use, the cessation of flow through an area without having to stop the supply of fluid supply to said conduit, where the device is based on the action of two heads and their corresponding handles, which in their synchronized pivoting movements between them, performs a throttling of driving in different sections, favoring that the maximum pressure is in an ergonomic position for the user; and where the device has a safety lock, as well as a support surface for the initial positioning of the line. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2812398A1
    申请号:ES201930803
    申请日:2019-09-16
    公开日:2021-03-16
    发明作者:Besoli Albert Vila
    申请人:Besoli Albert Vila；
    IPC主号:
    专利说明:

    [0002] FLUID FLOW CUTTING AND CONTROL DEVICE IN PIPES
    [0004] The present invention refers to a device for controlling and shutting off the flow of fluids in non-rigid pipes, where in said pipes there is a flow of fluid inside them at a certain pressure, making it necessary at a certain time of use , the cessation of flow through a zone without having to stop the supply of fluid supply to said conduit, said non-rigid conduit allowing an elastic deformation such that it can be constricted in the desired zone and, after exerting said constriction operation, return to a position that allows the passage of fluid flow through said conduit.
    [0006] Background of the invention
    [0008] The use of non-rigid pipes for the conduction of fluids with a certain pressure, is necessary for different uses because, among other possible characteristics, it allows the winding of the pipe and its easy transport, as well as adaptation to different shapes in its route and, thanks to its connection terminals, allows its modular use to extend the length of the conduit as necessary for the purpose in which said conduit is used.
    [0010] In a usual way, the uses for which said non-rigid pipes are used, make it necessary for the fluid flow to be carried out at a considerable pressure. Furthermore, the possible increase in the length of the conduit means that, in anticipation of the associated increase in pressure drop in said increase in the total length of the conduit, the pressure of the fluid is increased to have at the outlet point of the conduit desired pressure.
    [0012] These uses can be diverse, such as fire-fighting water hoses, pipes in mining, fluid transport hoses in industries, or others that need said fluid conduction with the characteristics of flexibility and modularity that non-rigid pipes have.
    [0014] Increasing the length of the conduit by connecting a new non-rigid conduit section, when the system is in use and, therefore, under pressure, does not It is problematic when communication with the management of the fluid power supply to the line is easy and fast. On the contrary, when such communication is complicated or non-existent, or an immediate action is needed in adverse external conditions, some means of cutting off the fluid supply is necessary, which prevents the fluid from leaking through the point where it is to be connected. the new section of driving.
    [0016] To carry out said cut-off of the fluid supply under pressure, and taking an example of the 25 mm diameter hoses commonly used and, more widely, in forest fires, the throttling of these non-rigid pipes is commonly used, which thanks to its flexible behavior can be bent manually creating one or more pleats that cut the passage of fluid. This manual operation, under high pressure supply conditions, above 15 bar pressure or for non-rigid pipes with larger diameters that transport a quantity of fluid that requires a great force to throttle them, becomes very difficult or practically impossible. for a person, with which the immediacy of the action to cut the supply and the security of its execution are compromised by this manual system usually used.
    [0018] At these pressures, the hose accumulates a large amount of energy inside which, when strangled, becomes unpredictable, causing sudden movements and / or violent whipping, putting users at risk.
    [0020] Devices that are used to cut off the water supply at an intermediate point of a fire-fighting water hose are known and, therefore, form part of the state of the art. In this type of firefighting uses and, more specifically, in its use in actions related to forest fires, they have conditions such as bad orography, rough and dirty terrain, steep slopes, rapid changes in the direction of advance of the fire, as well as Considerable line lengths that can be up to 1 km, with the corresponding need for high supply pressures, over 40 bar, to compensate for head losses and thus have sufficient flow at the spearhead to attack the fire.
    [0022] These known devices, as can be seen in the American Patent US5071102 and in the Korean Patent Application KR20100097633, are based on a non-rigid conduction throttling tool, of the hose type, in which two opposing jaw-like heads side and side of the driving, with capacity each of them pivoted on an axis through the action of at least one handle, they apply pressure at diametrically opposite points and in the opposite direction to each other, to deform the hose, throttling it, and cutting off the fluid supply at that point.
    [0024] Said known devices have various drawbacks which mean that, despite their existence, fire extinguishing teams often prefer to carry out the throttling operation manually.
    [0026] These drawbacks are based on the fact that said devices do not have an initial placement of the hose in the equipment that allows a quick, efficient and safe action. In their use, they require exerting a considerable force in a small turning path of the actuating handles of said device and in this increase in tensions and possible sudden movements in the throttling process, the safety means for closing the device are not available. driving on the device, nor of correct driving grip.
    [0028] There are also drawbacks that, when used in high pressure conditions and in wet conduction conditions, the devices can cause the device to leave the conduit or move it, with the consequent risks for the user and the operation. that is held.
    [0030] On the other hand, the devices that, due to the conditions of use, must be used without auxiliary structures or supports, and that must be used only by the action of both arms of the user, such as devices used in outdoor uses in the proceedings. firefighting, said force exerted by the user by each of his arms is not performed in a synchronized, joint and equally distributed manner in each arm, and must also make a high effort in the short travels of the actuating handles from their rest position / initial placement, up to the flow cutoff position.
    [0032] This can cause, in said known devices, sudden accelerations of the gripping handles of said devices, as well as cause unexpected movements of the non-rigid conduction, as they do not work symmetrically with respect to the axis of the hose, especially at pressures. elevated.
    [0034] Description of the invention
    [0036] The aim of the present invention is to provide a device for controlling and cutting off flow of fluids in pipes, as well as providing a method of operation of said device, which manages to solve the aforementioned drawbacks, presenting other advantages that will be described below.
    [0038] In the present description, the concept described as non-rigid conduction is intended to refer to any conduction that allows the deformation of its cross section at a point where an external action is exerted, until it becomes strangled, preventing the passage of the fluid it carries. inside, said transverse passage section returning to its initial state or similar to said initial state, at the moment that the external action on a point or section of said conduit ceases.
    [0040] When in the present description it refers to a conduit to be throttled by the device, it should always be understood that it is a non-rigid conduit.
    [0042] Also by way of clarification, in the present description a reference system has been taken to describe the rotation of the handles-handles of the device, assuming that the 0 ° are in a position parallel to the longitudinal axis of the non-rigid conduit that It is intended to throttle at the point furthest from the user, being able to rotate with respect to an axis perpendicular to said axis of the conduction, up to 180 ° which are also parallel to the axis that forms the non-rigid conduction but at the point closest to the user .
    [0044] In accordance with this objective, according to a first aspect, the present invention is based on a device for controlling and shutting off the flow of fluids in non-rigid pipes, one of which has two heads, like jaws, actuated by their corresponding handles. or solidarity handles, the conduit to be strangled being placed in a space between said heads, where each of said heads, in respective pivoting movements on their axes, exert pressure on the conduction due to the geometry of said heads with respect to their corresponding axis pivoted.
    [0046] The present invention is characterized by the fact that the flow control and cut-off device comprises, at least:
    [0047] - a system of synchronization and communication of efforts between both heads; - a system for closing the space where the conduction and retention of the same is located; - a support element and position of the conduction in the position of the insertion and initial rest heads;
    [0048] where the system for closing the space between heads, where the conduction is located and retained, is formed by an articulated lid which has a free movement in the position of the heads of introduction and initial rest of the conduction in the device, while that locks its articulation in its closed position, when the heads are out of said position of introduction and initial rest.
    [0050] This configuration allows to have a device for manual use, without the need for external supports, that mechanically synchronizes the movement of both heads driven from their handles or handles, sharing and balancing the efforts to be made between said two handles or handles, to avoid a decompensation in its use.
    [0052] It is also achieved with said configuration to advantageously have a device in use, with high tensions between the conduit and the device, and with great energy accumulated by the pressure of the fluid it contains, which allows to ensure an effective and safe retention of the conduction in the space intended for her throughout the strangulation process, providing security to its user.
    [0054] As an element of support and location of the hose, it is considered a surface opposite the cover of the closure system, delimiting the space for conduction, which is configured by the space between the two heads, the cover of the closure system and said supporting element.
    [0056] According to a preferred embodiment of the invention, the support and location element for the conduit is formed by at least one surface of greater height on which the conduit is located in the constriction zone and which reduces the space in the vertical plane. where the conduction is located, said higher surface being attached to the turning movement of the head, leaving the non-rigid conduction support area during the turning of the heads and corresponding throttling of the conduction.
    [0058] This makes it possible to have a positioning of the pipeline such that, at the moment of starting the rotation of the heads, pressure is applied to the pipeline in one direction and the position of said pipeline is fixed in the device, despite the forces. that would create relative movements between the conduit and the walls of the head perpendicular to the axis of the conduit, due to the pressure of the fluid that passes through the conduction inside it.
    [0059] These higher surfaces in the support element and driving situation, which disappear when the heads are turned, help the maneuver to be carried out parallel to the axis of the hose. Otherwise, the non-rigid conduit would move perpendicular to the axis of said conduit during throttling, being able to rub against the closure system and / or come into contact with the synchronization mechanism.
    [0061] Alternatively, although not preferably, the support element can be formed by the surface of the elements for synchronizing the rotation of the heads and / or the surface corresponding to the fixed plate for joining the pivoting axes of the heads or others. elements integral to said plate that could be added for said function, in combination or not with the mobile support elements integral to the rotation of the heads.
    [0063] On the other hand, said throttling pressure causes the conduit to deform and increase its length in a plane perpendicular to the throttling, so that the conduction, in its deformation, could also collide with the supporting element and the location of the driving. By having the highest surface that was initially limiting the space of said plane perpendicular to the constriction, and turning said surface with the clamp, when the deformation of the conduction requires a greater space in the perpendicular plane, said surface of greater height You will no longer find yourself interfering with said expansion, thereby gaining space so that throttling can occur more easily.
    [0065] In any case, even if this higher surface rotates to leave the expansion zone of the conduction in its throttling, the support element and the location of the conduction will have to at least have the plane generated by the movement synchronization elements. between the heads, so that the conduction cannot come out at the end opposite the cover of the closing system.
    [0067] Also preferably, the heads carry out the throttling pressure on the conduction, by pivoting a geometry on its corresponding axis, starting from its initial insertion and rest position, which can be between 0 ° and 30 °. in a usual way, preferably preferably starting from about 15 °, and making a turn to its throttling stop position, where said throttling stop position corresponds to an angle equal to or greater than 135 ° with respect to the parallel axis driving, up to a maximum of 180 °.
    [0068] Preferably, the throttle stop is made in a position above 165 °. This position substantially around 165 ° allows to have the maximum range of rotation of the arms without the fingers of the hand coming into contact with the conduction that is being throttled, since this would press the fingers between the handles and the hose.
    [0070] This makes it possible to have a turning path that allows distributing the manual effort made on the handles or grips of the heads that act as driving jaws. This characteristic makes it possible to advantageously differentiate itself from the known antecedents, since they do this work in a short distance, which, moreover, does not coincide with the area where the manual operation work has the position where the greatest force can be applied to the device. This position from which a greater effort is required, in a use of turning in opposite directions of the handles-handles, is from approximately 80 ° -90 ° with respect to the axis parallel to the driving, with which With this configuration, starting from said position, usually called the relief position due to the change in configuration of the type of pressure exerted by the areas of the heads, the final section of throttling could be made with a position by the user of greater possibility of exert greater force.
    [0072] In an even more preferred embodiment, the rotation of the heads to arrive from their initial position of introduction and rest, starts from a position equal to or close to that parallel to the axis of the conduction, to the maximum throttling position, which is 135 °. at 180 °, having a first section of throttling pressure up to the range of 80 ° -120 °, relief position, in which a throttling of the conduction is performed close to half the maximum. It is understood as close to between 40 and 60%, approximately of the total strangulation.
    [0074] This configuration manages to advantageously distribute the effort of the user, so that, thanks to the configuration of the geometry of the heads, it is possible to have a first section of rotation path of said heads where the force to be exerted is not too high, in a position where the user cannot exert their maximum force due to the placement of the handles or grips of the heads. This first section comprises a first area of the head that is for the introduction of the conduction and the beginning of the rotation, in which there is practically no throttling pressure, and a second pressure area as a surface with a practically constant radius, acting as a lever of the first degree.
    [0076] The configuration indicated allows the second half of the section of the route, which is more complicated and requires greater force from the user, to be carried out at angles of use that allow the user to exert their maximum force, by arranging the handles or grips of the control and cutting device, at a more ergonomically optimal angle to exert such maximum force and overcome the internal pressure of driving. This second section comprises the third area of the head in which the throttling force is applied by the cam effect of the head shape, and a final area of maximum throttling as the final part of the third area, in which it is preferably arranged of a braking zone of the driving movement.
    [0078] In a preferred embodiment of the invention, with respect to the closure system of the fluid control and cut-off device, the hinged lid of said closure system has a protrusion at the end where its hinge is located. In order to pivot the lid between the open and closed positions, said protrusion must enter a recess or opening, located in the base where the lid is hingedly fixed. This recess or opening is only accessible in the position of the heads corresponding to that of introduction and initial rest and, as soon as said heads are turned, this recess or opening is no longer accessible to the protrusion, blocking the position of the lid.
    [0080] This makes it possible to have a closing system that safely holds the conduit in its closed space, without the possibility that by mistake or by pressure action, an unlocking of the closing position of said closing system can be carried out. .
    [0082] Optionally, and in relation to the configuration of the previous closure system, the protrusion of the hinged lid of the closure system, in order to be open in any position of folding said lid until it reaches its closed position, needs to be located inserted in the recess or opening, in such a way that it does not allow the heads to rotate, keeping them in the insertion position and initial rest, while the lid is not closed.
    [0084] This advantageously achieves, in addition to the locking of the closure system in the closed position while the throttling is being carried out, always also having the locking device control and cut in position of introduction and initial rest, while the cover is open, always having the device ready for the introduction of the conduit simply by keeping the cover open. In addition to this advantage, of being able to keep the tool locked, while the lid is open, this feature also provides the security that the operator is not injured involuntarily, by trapping a phalanx or hand, by turning the heads without having closed the lid.
    [0086] Optionally, although preferably, the fluid flow control and cut-off device must each have a lateral surface, in contact with the conduit, which has at least the four areas indicated above in the description of the different sections of types of pressure exerted:
    [0087] - a first zone of no pressure on the conduit, which delimits the available space where said conduit is located, in the position of introduction and initial rest; - a second zone of cylindrical geometry with a substantially constant radius, which in the rotation of the heads interferes with the conduction space by pressing it as a first degree lever;
    [0088] - a third cam-shaped area, eccentric with respect to the pivot axis of the head, exerting a cam-like throttling pressure; Y
    [0089] - a fourth end zone, where the maximum throttling occurs,
    [0090] wherein said zones are consecutive in the order indicated from the position of introduction and initial rest to the position of maximum throttling for maximum space of the conduit occupied by each of the heads.
    [0092] This configuration ensures that the device has an initial position in which it does not interfere with the positioning of the line, while the throttling movement is preferably carried out in different sections depending on the type of pressure that the device exerts on the line. The first of these sections, with lower pressure, starts from the first zone of practically flat geometry of no pressure of the pipeline to begin with the incidence of the second zone of cylindrical geometry, with a practically constant radius and action as a lever of first degree, which runs in the first 80 ° to 120 ° according to the configuration, said sections being preferably from 0-15 ° to 90 °.
    [0094] Next we have the sections with the highest pressure, corresponding to the third cam-shaped zone, from the end of said 80 to 120 °, until the maximum throttling, between 135 ° to 180 °, preferably at 165 °.
    [0096] Finally, and optionally, although preferably, the fourth area of heads throttling surfaces, corresponding to the maximum throttling, has on its surface, at least partially, a groove, groove or set of multiple protrusions that increase grip of the conduction in the maximum throttling process and, therefore, in the process that suffers from greater stresses in the conduction and the flow control and cut-off device. This final section, also called the brake zone, occurs at the end of the actuation section in the form of a cam, with hardly any rotation of the head.
    [0098] This brake zone allows for an immobilization of the driving that minimizes the movements generated by the action of the internal stresses generated by the throttling itself to which the driving is subjected, taking into account that said driving may be wet and, therefore, slippery . This minimization of driving movements adds safety to the user's action on driving with said flow control and cut-off device.
    [0100] Also optionally, the third surface of the lateral area of the head of the head, which acts as a cam, has a surface finish, which has a wavy contact geometry with the conduit. This configuration allows the head to rotate more effectively in its throttling movement, the projections of the corrugated area of one head coinciding in the rotation with the projections of the corrugated area of the other head.
    [0102] In an optional embodiment of the invention, the travel of the heads is limited by the travel of a stop or slot integral with the rotation of the head, in its corresponding and complementary slot or stop located in a static part of the device, delimiting the rotation route of the heads between the position of introduction and initial rest, and the position of maximum throttling of the head on the conduit.
    [0104] This delimitation of the rotation path of the heads makes it possible to avoid excess efforts in the final sections of the routes, as well as to avoid the rotation to unwanted areas that could cause both handles of the heads to hit.
    [0106] According to a second aspect, the present invention proposes a method of operation of a fluid flow control and cut-off device in pipelines, of those indicated in the previous characteristics. Said method is characterized by the fact that the operation of the flow control and cut-off device has, at least, the following steps:
    [0107] to. The device starts from the initial position of introduction and rest, with the heads and their corresponding handles or handles in their initial position in which the closure system can be articulated and leave space for the introduction and positioning of the conduit.
    [0108] b. Introduction of the conduction into the space of the flow control and cut-off device.
    [0109] c. Close the lid of the closing system and start the rotation of the heads so that said hinged lid cannot carry out its articulation movement and, therefore, the position of the closed lid remains locked.
    [0110] d. Perform the rotation of the handles of both heads, mechanically synchronized, from the position of introduction and initial rest, to the position of maximum throttling, passing through at least:
    [0111] d.1. A first pressing action by occupation of the head in the conduit space, in which the head presses the conduit in a regular way by means of a substantially cylindrical section with a substantially constant radius, acting as a first degree lever,
    [0112] d.2. A second pressure action by occupation of the head in the conduction space, followed by the previous one, in which the head presses the hose through an eccentric cam configuration, achieving greater throttling in this second phase, once it has been traveled part of the total head rotation travel.
    [0114] This operating method allows to have a much safer and more effective action than that performed with the devices referred to in the state of the art, having a secure fixing of the lid closure in the throttling path, and a division of the throttling in at least two sections that allow the part with the greatest effort to be carried out, in the most ergonomically favorable position for the user.
    [0116] The method and the device, with respect to other devices of the state of the art, makes it possible to increase the total angle of rotation during which effective work is carried out, so that at the same hose diameter and pressure, with the present device and with the execution of previous method, less effort must be made by the operator, obtaining a greater mechanical advantage.
    [0118] In a preferred embodiment of said operating method, step b), of introduction of the conduit into the device, has that said introduction, in the insertion and rest position, is carried out on a support surface of greater height, integral with the rotation of one of the heads, where said surface moves following the rotation and, as it does not cover the entire arc of the heads' travel with said support surface, it leaves a zone of vertical expansion of the conduction when the throttle is carried out. step d).
    [0120] Brief description of the figures
    [0122] For a better understanding of what has been explained, some drawings are attached in which, schematically and only as a non-limiting example, a practical case of embodiment is represented.
    [0124] Figure 1 is a top perspective view of a device for cutting and controlling fluid flow in non-rigid pipes, in which the lid is closed.
    [0126] Figure 2 is a bottom perspective view of the device for cutting and controlling fluid flow in non-rigid pipes.
    [0128] Figure 3 is a bottom perspective view of the device for cutting and controlling the flow of fluid in non-rigid pipes, in which the connecting part for the axle support and the support and positioning surface is held in a position showing its extraction.
    [0130] Figure 4 is a detailed view of the slot and stop of the head rotation.
    [0132] Figure 5 is an exploded perspective view of the parts of the flow control and cutting device.
    [0134] Figure 6 is a perspective view of the device for cutting and controlling the flow of fluid in non-rigid pipes, in which a hose is being introduced, with the lid open.
    [0136] Figure 7 is a sectional view of the closure system with a detail of the protrusion of the lid that allows its insertion in the recess of the head.
    [0137] Figure 8 is a perspective view of the flow control and cut-off device with a hose installed inside it and at the beginning of the throttling path.
    [0139] Figure 9 is a top plan view of the cut-off and flow control device with a hose installed inside it and in its insertion position, without the lid of the closure system being seen.
    [0141] Figure 10 is a partial top plan view of the cut-off and flow control device with a hose installed inside it and in an intermediate choke position, without the lid of the closure system being visible.
    [0143] Figure 11 is a top plan view of the cut-off and flow control device with a hose installed inside it and in the maximum throttling position, without the lid of the closure system being visible, marking the usual position of the fingers. gripping the handles.
    [0145] Figure 12 is an elevation view of the device for cutting and controlling fluid flow in non-rigid pipes, in which a hose is inserted, and it is in the maximum throttling position.
    [0147] Description of a preferred embodiment
    [0149] Next, various embodiments of the device for controlling and shutting off the flow of fluids in pipelines, as well as the method of operating said device, of the present invention are described, with reference to the figures indicated above.
    [0151] According to a preferred embodiment, and as can be seen in Figures 1 to 5, the control and cut-off device (10) of fluid flow in non-rigid pipes, in this case fire water hoses (30), is located formed by two heads (11) to which their corresponding handles (12) are integrally attached, where each of the heads (11) pivots on respective pivot axes (13).
    [0153] These pivot axes (13) are joined by a plate (14) as a joint element of the assembly at all times and which will also serve to house support elements. (22,23), of the hose (30) as it is introduced into the flow control and cut-off device (10).
    [0155] Each of the heads (11) has a crown or pinion (16) in communication and coordination with the crown or pinion (16) of the other head (11), to synchronize and communicate the movements of both heads (11) coordinating and communicating the efforts made from both handles (12).
    [0157] As can be seen in figure 8, these heads (11) have a geometry that, starting from their pivoting axis (13), shows a substantially cylindrical configuration, having different shapes on their side walls that are coordinated between one and the other head (11) to act at the same time on the same area to be throttled of the hose (30).
    [0159] A first flat lateral surface (18) of non-pressure-contact with the hose (30). Next, there is a second lateral surface (19) with the same outer radius in its corresponding section, which acts as a first degree lever.
    [0161] Next, there is a third lateral surface (20) in which there is an outer radius geometry that increases with respect to the pivot axis (13), acting as a cam and more rapidly exerting the throttling pressure. for the same turning radius (a) in its previous sections. This third surface has a corrugated exterior finish, coordinating in the rotation of the heads the opposite position of the protuberances (31) and the valleys (21) of a corrugation of a head (11), respectively with the protrusions (31) and the valleys (21) of the corrugation of the other head (11).
    [0163] Finally, in the final part of the third lateral surface (20), there is a fourth zone (20.1) for turning the head (11) corresponding to its final position of maximum throttling. On its finishing surface in contact with the hose (30), said maximum constriction zone (20.1), has a relief / groove that increases the ability to grip the hose (30), avoiding relative displacements between the hose (30) and the device (10).
    [0165] In alternative embodiments, you can have a third side surface (20) with a non-corrugated surface and / or a first surface (18) that is not flat, if not with a lower radius, that practically do not apply pressure. Also alternatively a fourth side surface is provided without said relief / grooving.
    [0167] These lateral surfaces (18, 19, 20, 20.1) form consecutive sections, in the order indicated, of incidence on the hose (30), starting from the position of introduction and initial rest, which in this embodiment is a = 0 ° , where the handles (12) are parallel to the hose (30). In alternative embodiments, it is possible to start from a greater angle of introduction and rest for a better positioning of the user's hands on the handles (12) but to the detriment of the space occupied by the flow control and cut-off device (10) in its saved and first manipulation.
    [0169] The heads (11) have a support surface formed by two fixed support elements (22) integral with the plate (14) and two mobile support elements (23) integral with the rotation of the heads (11). The fixed support elements (22) are located as a support for the hose (30) in the front and rear part of the area where the constriction is practiced, while the mobile support elements (23) are in the position of introduction and rest of the heads, shown in figure 6, in the hose constriction zone (30), while as said constriction is carried out, they rotate with the heads (11) to gradually disappear from that constriction zone and allow the expansion of the hose (30) in the constriction plane.
    [0171] In alternative embodiments, the sole support surface can be the surfaces of the synchronization pinions (16), being able to include the plate itself (14), or having the mobile support elements (23) without the fixed elements (22).
    [0173] As can be seen in Figures 1 to 7, on the opposite side to the support surfaces (22,23), the flow control and cut-off device (10) has a closure system formed by a cover (24), which is articulated in one of the axes (13), although it can alternatively be articulated properly in one of the heads (11), where the cover (24) has a projection (25) in the end corresponding to the joint (26). In this axis (13) of the head (11) where the joint (26) is located, there is a recess (27) that allows the entry of the projection (25) of the cover (24) and, in this way, the folding down the cover (24) to its closed position, in which there is no interference between the projection (25) of the cover (24) and the recess (27) of the head (11), allowing the heads to rotate ( eleven).
    [0174] At the moment that the head (11) is at some angle of rotation (a), the projection (25) and the recess (27) do not coincide with what the lid remains locked in its closed position, thus preventing its opening during the throttling process, in which considerable stresses are created. In the same way, while the cover (24) is open, we have that the projection (25) is in the recess (27) which does not allow the rotation of the head (11) and, therefore, in said open position the device (10) will always remain in the initial insertion and rest position.
    [0176] In the present embodiment, there is a protrusion (28) that is attached to a head (11) and that runs through a slot (29) of the plate (14), delimiting the turning angles (a) of the heads.
    [0178] In the present embodiment, as has been said, and as can be seen in Figures 8 to 12, the starting position is the initial insertion and rest position, which corresponds to a state in which the handles (12 ) are parallel to the hose (30), that is to say with an angle of rotation a = 0. Alternatively, the initial insertion and rest position the handles (12) are arranged at an angle of less than 30 °, also preferably over 15 ° to avoid contact between the handles (12).
    [0180] This position corresponds to the first lateral surface (18) of the heads (11) of non-incidence with the hose (30), as well as the possibility of folding down the projection (25) of the cover (24) with the recess (27) of the head (11), with which the cover (24) can be opened and the hose (30) can be inserted.
    [0182] Once the lid (24) is closed, the heads (11) can be started to rotate, the user exerting force on their handles (12) and, in the first instance, after 15 ° of rotation, the second lateral surface (19) of the head, in which said head (11) regularly presses the hose (30) through said section with a substantially constant radius of incidence, having a mechanism similar to a first degree lever. This second lateral surface has its path to the relief position, in which the third lateral surface (20) in the form of a cam begins to impinge, which begins to impinge towards a rotation angle of a = 90 ° approximately, until it reaches the area where the surface (20.1) of the head (11) reaches its maximum throttling and which means the end of the rotation path of the heads (11).
    [0183] In the relief position, in which approximately half of the hose section (30) has been pressed, the third cam-shaped lateral surface (20) begins to impinge, thus coinciding with the section in which it should be perform greater force by the user, with the angle of rotation (a) that is best ergonomically located for said user. In this section, the maximum throttling is reached at a rotation angle of a = 165 ° to maintain a final separation of the handles (12) that prevents the user's hands from clashing.
    [0185] Alternatively, the sections of the incidence routes of the lateral surfaces (18,19,20, 20.1) of the heads (11) can be distributed in other proportions where the incidence of the second surface (19) would last until the position of relay in the range of 80 ° -120 ° and the third lateral surface (20) could be incident from the end of the second surface (19) to 135 ° and 180 ° of the angle (a), to the final zone maximum throttling (20.1).
    [0187] This embodiment, as well as the alternatives that may be derived from the combination of proposed or equivalent options, can be applied to other types of conduits, as well as to various conduction radii.
    [0189] Although reference has been made to a specific embodiment of the invention, it is evident to an expert in the field that the device for controlling and shutting off the flow of fluids in pipelines, as well as the method of operating said device, described are susceptible of numerous variations and modifications, and that all the aforementioned details may be substituted by other technically equivalent ones, without departing from the scope of protection defined by the appended claims.
    权利要求:
    Claims (15)
    [1]
    1. Fluid flow control and cut-off device in non-rigid pipes, of which they have two heads (11), as clamps, actuated by their corresponding handles (12) or joint handles, placing the pipe (30) to throttle in a space between said heads (11), where each of said heads (11), in respective pivoting movements on their axes (13), exert pressure on the conduit (30) due to the geometry of said heads ( 11) with respect to its corresponding pivot axis (13), characterized in that the flow control and cut-off device (10) comprises, at least:
    - a system of synchronization and communication of efforts (16) between both heads (11);
    - a closing system (24) of the space where the conduit (30) is located and its retention;
    - a support and positioning element (22,23) of the conduit (30) in the position of the heads (11) of introduction and initial rest;
    where the closing system of the space between heads (11), where the conduction is located and retained, is formed by an articulated cover (24) which has a free movement in the position of the heads (11) of introduction and rest initial conduction (30) in the device (10), while blocking its articulation (26) in its closed position, when the heads (11) are out of said initial insertion and rest position.
    [2]
    2. Fluid flow control and cut-off device in non-rigid pipes, according to claim 1, wherein the support and location element (22,23) of the pipe (30) is formed by at least one surface of greater height (23) over which the conduit (30) is located in the throttling area and which reduces the space in the vertical plane where the conduit is located, with said surface (23) of greater height being joined to the turning movement of the head (11), leaving the area of support of the non-rigid conduit (30) during the rotation of the heads (11) and corresponding throttling of the conduit (30).
    [3]
    3. Device to control and cut off the flow of fluids in non-rigid pipes, according to claim 1 or 2, where the support element can be formed by the surface of the synchronization elements (16) of the rotation of the heads (11) and / or the surface corresponding to the fixed plate (14) for joining the pivot axes (13) of the heads (11) or other elements integral (22) to said plate (14) that could be added for said function, in combination or not with the mobile support elements (23) integral with the rotation of the heads (11).
    [4]
    4. Device for controlling and shutting off the flow of fluids in non-rigid pipes, according to any of the preceding claims, wherein the heads (11) perform the throttling pressure on the pipe (30) by pivoting its geometry on its corresponding axis (13), starting from its initial position of introduction and rest, which is between 0 ° and 30 °, and making a turn to its throttling stop position, where said stop position of throttling corresponds to an angle equal to or greater than 135 ° with respect to the axis parallel to the conduit (30), up to a maximum of 180 °.
    [5]
    5. Device for controlling and shutting off the flow of fluids in non-rigid pipes, according to any one of the preceding claims, wherein the heads (11) perform the throttling stop in a position substantially around 165 °.
    [6]
    6. Device for controlling and cutting the flow of fluids in non-rigid pipes, according to claim 4, wherein the rotation of the heads (11) to arrive from their position of introduction and initial rest, has a first pressure section throttling that reaches the range of 80 ° -120 ° in which a throttling of the conduction (30) is carried out close to half of the maximum.
    [7]
    7. Device for controlling and cutting fluid flow in non-rigid pipes, according to claim 1, wherein the hinged lid (24) of the closure system has a protrusion (25) at the end where its hinge is located (26), that in order to pivot the lid (24) between the open and closed positions, said protrusion (25) must enter a recess (27) or opening in the base where the lid (24) is hingedly fixed, so that this recess (27) or opening is only accessible for the position of the heads (11) corresponding to that of introduction and initial rest and, as soon as said heads (11) are turned, this recess (27 ) or opening is no longer accessible to the protrusion (25) blocking the position of the cover (24).
    [8]
    8. Device for controlling and cutting fluid flow in non-rigid pipes, according to claim 7, wherein the protrusion (25) of the articulated cover (24) of the closure, in order to be open in any position of folding of said cover (24) until it reaches its closed position, it needs to be inserted in the recess (27) or opening, so that it does not allow the heads (11 ), keeping them in the position of introduction and initial rest, while the lid (24) is not closed.
    [9]
    9. Fluid flow control and cut-off device in non-rigid pipes, according to claim 1 or 4, wherein each of the heads (11) has a lateral surface, in contact with the pipeline, which has at least four zones:
    - a first zone (18) of no pressure on the conduit (30), which delimits the available space where said conduit (30) is located, in the initial insertion and rest position;
    - a second area (19) of cylindrical geometry of substantially constant radius, which in the rotation of the heads (11) interferes with the conduction space (30) by pressing it as a first degree lever;
    - a third zone (20) in the form of a cam, with eccentricity with respect to the axis (13) of pivoting of the head, exerting a throttling pressure in the manner of a cam; and - a fourth final zone (20.1), where the maximum throttling occurs,
    where said zones (18,19,20,20.1) are consecutive in the order indicated from the position of introduction and initial rest to the position of maximum throttling for maximum space of the conduit (30) occupied by each of the heads (eleven).
    [10]
    10. Device for controlling and shutting off the flow of fluids in non-rigid pipes, according to claim 9, wherein the constriction is carried out in different sections according to the type of pressure exerted by the device (10) on the pipe (30) , the first of these sections, with lower pressure, starts from the first zone (18) of practically flat geometry of no pressure of the pipeline (30) to begin with the incidence of the second zone (19) of cylindrical geometry, with radius practically constant and action as a lever of the first degree, which runs in the first 80 ° or 120 °; while the section below, with higher pressure, corresponding to the third cam-shaped zone (20), from the end of the first section of the head rotation, until the maximum throttling, between 135 ° to 180 °.
    [11]
    11. Device for controlling and cutting off the flow of fluids in non-rigid pipes, according to claims 1, 9 or 10, wherein the area that performs the maximum throttling has on its surface, at least partially, a fluted, grooved or set of multiple protrusions (20.1) that increase the grip of the conduit (30) in the maximum throttling process and, therefore, in the process that suffers from greater stresses in the conduit (30) and the control and cut-off device (10) of the flow.
    [12]
    12. Device for controlling and cutting fluid flow in non-rigid pipes, according to claim 9 or 10, wherein the surface (20) of the lateral area of the head that acts as a cam has a surface finish, which has of a wavy contact geometry (31,21) with the conduit (30).
    [13]
    13. Fluid flow control and cut-off device in non-rigid pipes, according to any of the preceding claims, wherein the travel of the heads (11) is limited by the travel of a stop or slot (28,29) attached to the rotation of the head, in its corresponding and complementary slot or stop (28,29) located in a static part of the device (10), delimiting the rotation path of the heads (11) between the insertion position and initial rest, and the maximum throttling position of the head (11) on the conduit (30).
    [14]
    14. Method of operation of a device for controlling and cutting the flow of fluids in non-rigid pipes, of those indicated in claims 1 to 13, characterized by the fact that the operation of the control device (10) and flow cutoff has at least the following steps:
    to. The device (10) starts from the initial insertion and rest position, with the heads (11) and their corresponding handles (12) or handles in their initial position in which the closure system can be articulated and leave space for insertion. and the positioning of the conduit (30).
    b. Introduction of the conduit (30) into the space of the flow control and cut-off device (10).
    c. Close the cover (24) of the closing system and start the rotation of the heads (11) so that said articulated cover (24) cannot carry out its articulation movement and, therefore, the position of the cover (24) remains locked. ) closed. d. Perform the rotation of the handles (12) of both heads (11), mechanically synchronized (16), from the position of introduction and initial rest, to the position of maximum throttling, passing through, at least:
    d.1. A first pressure action by occupying the head (11) the space of the conduit (30), in which the head (11) regularly presses the driving (30) by means of a substantially cylindrical section with a substantially constant radius, acting as a first degree lever; d.2. A second pressure action by occupying the head (11) in the space of the conduit (30), followed by the previous one, in which the head (11) presses the hose by means of an eccentric cam configuration, achieving a greater constriction in this second phase, once part of the total rotation path of the heads (11) has been covered.
    [15]
    15. Method of operation of a device for controlling and cutting the flow of fluids in non-rigid pipes, according to claim 14, wherein in step b), introducing the pipe (30) in the device (10) , said introduction, in the insertion and rest position, is carried out on a support surface (23) of greater height, integral with the rotation of one of the heads (11), where said surface (23) moves following the rotation and , by not covering the entire arc of the travel of the heads (11) with said support surface (23), it leaves a zone of vertical expansion of the conduit (30) when the throttling of stage d) is carried out.
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    同族专利:
    公开号 | 公开日
    ES2812398B2|2021-11-19|
    引用文献:
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    法律状态:
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    ES201930803A|ES2812398B2|2019-09-16|2019-09-16|FLUID FLOW CUTTING AND CONTROL DEVICE IN NON-RIGID CONDUCTIONS AND THE SAME OPERATION METHOD|ES201930803A| ES2812398B2|2019-09-16|2019-09-16|FLUID FLOW CUTTING AND CONTROL DEVICE IN NON-RIGID CONDUCTIONS AND THE SAME OPERATION METHOD|
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