• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An object of the present invention is a pipe element union flange, formed by an integral piece (1) of plastic, which in turn has a tubular body (2) configured to be joined to a pipe element, which It has a first end (3) with fixing means to the pipe element, and a second end (4) from which an annular element (5) emerges, which in turn comprises a plurality of through holes (6). The integral part (1) has reinforcing fibers (7) inside it. Another object of the present invention is a method of manufacturing the flange by injecting plastic into a mold with the shape of an integral part (1), introduction of reinforcing fibers (7), cooling the integral part (1), and Machining of through holes (6) in the annular element (5) of the integral part (1). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2797000A1
    申请号:ES201930481
    申请日:2019-05-30
    公开日:2020-11-30
    发明作者:Sánchez Javier Antonio Vázquez；Ariza David Rosa
    申请人:ABN Pipe Systems SL；
    IPC主号:
    专利说明:

    [0002] PIPE ELEMENTS JOINT FLANGE AND MANUFACTURING METHOD
    [0004] Field of the invention
    [0006] The present invention belongs to the field of pipe networks for the conduction of all types of fluids, formed by different straight pipe sections, elbows, in "T", as well as other elements such as valves, pumps or measuring equipment. Specifically, the present invention refers to the connecting flanges of these different pipe elements.
    [0008] Background of the invention
    [0010] Flanges are an essential element in the pipe network installation process, as they allow the union of two pipe elements, these elements being able to be different straight pipe sections, elbows, a T ... or other elements necessary in the network , such as valves of different kinds, pumps, measuring equipment, etc.
    [0012] The union between the two pipe elements is usually made by means of two flanges, each one connected to one of the elements, generally one of them always forms part of the pipe and the other is connected to the equipment or accessory.
    [0014] Currently in practice, the installer of pipe networks encounters certain problems with the use of flanges when joining the different elements.
    [0016] One of these problems usually appears when the diameters of the elements to be connected are not the same. For a nominal diameter of a polyethylene or polypropylene pipe, for example, a flange defined by its nominal pitch corresponds, but if the diameter of the element to be joined is not the same as the previous one, the reduction / enlargement elements must be added. necessary.
    [0017] It usually happens that plastic tubes in general present a standardization according to the outside diameter and not the inside diameter as it happens with other materials. This generates a dislodging effect that is not always detected when it is installed, which can cause future problems in the joints and the use of the flanges.
    [0019] To solve this problem, in the particular case of the unions of auxiliary elements, such as valves or measuring elements, it could be considered to use an element, for example a smaller valve with which the same internal diameter is achieved both in the pipeline. of the plastic tube, as in the other material, like steel or cast iron, for example. But it cannot be installed in practice as the flange joint bolts would not match.
    [0021] Another problem arises in the connection of short-body butterfly valves, in which the valve disc does not enter the flange holder dimensionally, as it is larger in diameter than this.
    [0023] Different solutions to this problem could be, for example, changing the type of valve for a double eccentric butterfly valve with a longer body, which would make the installation more expensive, or lowering or chamfering the inner wall of the flange holder, which may cause weakness. of the same, which would originate a later deterioration.
    [0025] In the state of the art there is an element developed with the purpose of providing a solution to these problems, which consists of a special flange-flange-holder assembly, which has a polyethylene or polypropylene flange holder and a flange formed by an iron or steel ring. . This metal flange guarantees a flow of optimum power, and also withstands a nominal pressure of up to 25 bar. In this case, the flange has 50% more contact surface for the transmission of force than a standard flange holder with idler flange, which translates into greater security and more stability. Furthermore, this set is small and is cheaper than standard flanges, and is valid for the connection of butterfly valves, whose operability is not guaranteed with standard flanges.
    [0026] However, this flange-flange-holder assembly continues to present problems because the flange holder in the area where it joins the flange does not have a lateral contour perpendicular to the area with the smallest diameter of the flange, so to find this perpendicularity, the flange must be of a larger diameter and must be located in the perimeter area of the flange holder. In this way, the thrust plane in the area of action of the assembly flange against the flange of the element to be joined is reduced to the perimeter area of contact of the elements, so that the thrust plane that is generated is not parallel. to the flanges, with which unfavorable deformations are formed in the union between said elements.
    [0028] Currently there are also flange-holder assemblies that integrate both elements in one. Document JPH09159073 describes a process for manufacturing a plastic flange holder that has a metal flange embedded inside it to reinforce the assembly. The through holes in the annular area go through the plastic part of the flange holder and the metal part of the flange. JPH0634083 shows a plastic flange holder system with an embedded metal ring. This type of system has the disadvantage of providing problems of absorption of bending forces in the different component parts, plastic and metal. In systems that integrate embedded metal into plastic, it is possible that in the presence of stresses each material flexes independently, causing unwanted deformations in the plastic part that surrounds the embedded metal ring.
    [0030] Therefore, a flange that achieves a simple, safe and efficient union of the elements of the pipe networks is desirable, avoiding the drawbacks of the previous systems existing in the state of the art.
    [0032] Description of the invention
    [0034] The present invention solves the problems existing in the state of the art by means of a pipe element union flange, which has an integral part made of plastic, preferably polyethylene or polypropylene, although it can be made of other thermoplastic materials such as polyamide ( PA), ABS or the like. This integral part has in turn a tubular body with a first end with fixing means to a pipe element and a second end, and an element annular ring emerging from the second end of the tubular body, which constitutes the clamping plane of the flange in which it in turn has a plurality of through holes. These through holes will serve for the union by means of screws to another flange arranged in another pipe element. The integral part has inside reinforcing fibers, both in the tubular body and in the annular element, which reinforce the integral part to provide a strong flange that securely joins the elements of the pipe networks.
    [0036] According to different embodiments, the means of fixing the first end of the tubular body to the pipe element are adapted to all the joint joining methods existing today, to be able to cover the different options available on the market, specifically for the fixing selected from among butt welding, socket welding and welding with electroweldable accessories.
    [0038] In particular, these reinforcing fibers are not metallic, and are preferably glass fibers, carbon fibers or a combination of both.
    [0040] In this way, the flange is made up of a single continuous integral piece of reinforced plastic that does not use metallic elements embedded in its structure. The reinforcement of this integral piece of plastic is fibrillar in nature, which can carry compatibilizing elements that reinforce its union with the plastic of the integral piece.
    [0042] The design of the integral part with the tubular body and the annular element allows said annular element, which would act as a fastening element to the other flange, to be smaller, and therefore allows the fastening screws between two adjacent flanges to be arranged in a diameter smaller than the one that would be in conventional flanges corresponding to the diameter of the tubes to be connected. This allows the use of pipe elements and / or accessories with a nominal diameter smaller than those that would have to be used with conventional flanges, with the added advantages of lower cost, smaller screws, and direct connection with machines and elements without the need for reductions. .
    [0044] Therefore, with the flange object of the present invention, a significant improvement over the existing flanges in the state of the art is achieved, since the functionality of the flange and the flange holder is achieved by means of a single element that combined in a single integral piece. This provides greater simplicity in the installation, and also allows the use of smaller diameter flanges than would be necessary with conventional flanges independent of the flange holder, thus allowing the installation of valves and other smaller elements, reducing costs and achieving a more adequate operation of the network.
    [0046] Likewise, since the diameter of the flange can be reduced, pressure is exerted from an area closer to the generatrix of the pipe elements, improving the connection between them and allowing the use of a smaller number of screws.
    [0048] Together with the above, this design of the flange by means of the integral piece allows the use of shorter lengths of screws in the union between the flanges of different elements, since in this case the flange faces are practically in contact, except for the elastic joint arranged between both. On the contrary, in conventional flange connection systems there is a greater separation between flanges due to the thickness of the flange of the flange holder of each of the flanges. This achieves a significant cost reduction in hardware.
    [0050] Additionally, as it is a system made of a continuous integral piece of reinforced plastic, a thrust zone is achieved on practically the entire surface of the annular zone of the tubular body (which would be equivalent to the conventional flange holder). In this way, a complete perpendicularity of the junction of the lateral contour of the tubular body with the junction with the annular element is obtained, and therefore, parallelism in the plane of thrust between flanges is achieved, minimizing the problem of unfavorable deformations that occur. generated in this plane of union between plastic flanges with embedded metal explained in the section on the state of the art.
    [0052] Therefore, the flange object of the present invention is an effective flange-holder assembly, which facilitates its placement and reduces the number of necessary elements, achieving better performance than conventional flanges in the union of pipe elements. In addition, as the handling and assembly technique of these and the placement of the pieces have not been modified, training of the installer team is not required, thus facilitating placement and avoiding assembly errors.
    [0053] According to different particular embodiments of the invention, at least part of the reinforcing fibers are oriented according to a predetermined direction, which provides greater resistance according to a certain orientation of the forces received, in different areas of the tubular body or in the element. cancel. Thus, in the manufacture of the flange by injection, the fibers are oriented in predetermined directions to reinforce the final behavior of the flange both in the tubular body and in the annular element that joins the other flange of the next element. This orientation is achieved by changing the fiber injection points in the part.
    [0055] Thus, if for example all the reinforcing fibers are oriented according to a predetermined direction, according to certain embodiments, the reinforcing fibers that are arranged inside the tubular body may be oriented in the same direction as those that are arranged inside the ring element. Accordingly, the reinforcing fibers of the tubular body and the annular element can have an orientation parallel to the generatrix of the tubular body, for applications where the flange is subjected to tensile and compressive forces, generally vertical installations such as uprights. Alternatively the fibers may have an orientation perpendicular to the generatrix of the tubular body. This orientation is the one that provides greater rigidity throughout the integral part, since the forces received by the tightening between flanges will be perpendicular to the fibers.
    [0057] Alternatively, the reinforcing fibers within the tubular body may have an orientation perpendicular to those within the annular element. Thus, in this case, the reinforcing fibers inside the tubular body may have an orientation parallel to the generatrix of the tubular body, while those inside the annular element have an orientation perpendicular to said generatrix of the tubular body, for applications where the flange is subjected to tensile and compressive forces in vertical paths where the flange is screwed to a fixed element. Alternatively, the fibers of the reinforcement inside the tubular body may have an orientation perpendicular to the generatrix of the tubular body, while those inside the annular element will have an orientation parallel to said generatrix of the tubular body, for horizontal tracing applications, where the flanges they may be subject to bending.
    [0058] According to different alternative embodiments of the invention, all the reinforcing fibers may be randomly oriented, for example for applications of connections to elements that can present vibrations, such as hydraulic pumps. Alternatively only part of the fibers may be oriented according to a predetermined direction while the rest will be arranged without predetermined orientation, that is, with a random orientation, for example for applications in general for fluids where constant temperature changes and high differentials occur. , taking into account the previous cases.
    [0060] According to a particular embodiment of the invention, the flange has a concentric bushing inside the integral part, along its entire length, said bushing being made of plastic and without reinforcing fibers inside. This embodiment will be very useful for networks of water pipes for consumption, since the cap made only of plastic would avoid the contact of water with the reinforcing fibers, to adapt to the sanitary and consumption regulations. This flange is manufactured by co-injection, in which in a first stage the inner bushing only composed of plastic material is injected, and a second over-injection of the rest of the integral part of the flange with fiber-reinforced plastic that conforms to the totality of the piece.
    [0062] According to the above, the tubular body and the bush have a variable thickness along their length.
    [0064] Preferably, the connecting flange object of the present invention has a plurality of radial ribs arranged between the outer surface of the tubular body and the annular element, perpendicular to both and located between the through holes of the annular element. These ribs reduce the tension between the tubular body and the annular element that functions as a connection system to the other flange.
    [0066] The percentage of fiber added to the plastic can vary from 5% to 50% depending on the design pressure needs of the pipe network. Preferably, the amount of fiber can be considered 20% -40% by weight. However, when the reinforcement needs are high, the amount of fiber can rise.
    [0067] The modulus of elasticity E for plastic ties, specifically polypropylene, would be around 1000MPa. If this polypropylene is reinforced with 5% glass fiber by weight, an E of around 2000MPa is obtained, while if it is reinforced with 50% glass fiber the E shoots up to around 11000MPa.
    [0069] Another object of the present invention is a method of manufacturing a pipe element union flange. This method consists of an injection of plastic in a mold with the form of an integral part, which in turn has a tubular body and an annular element emerging from one of the ends of the tubular body, and an introduction of reinforcing fibers together with the plastic in the mold through certain injection points, to obtain a certain orientation of the reinforcing fibers. By varying the injection points, the different orientations of the reinforcing fibers will be obtained in the integral part of the flange.
    [0071] Subsequently, the integral part obtained in plastic and reinforcing fibers is cooled, and finally, through-hole machining is carried out in the annular element of the integral part. This cold machining of the through holes in the annular element solves the existing problem in conventional flange manufacturing. In said conventional method, the holes were made directly during injection by placing male parts in the mold, cylindrical elements that prevent the entry of plastic, and thus get the through holes. Thus, during the injection of the plastic and the fibers into the mold, they surround these cylindrical elements and generate lines of union or welding of the material, which become weak points of the piece, being able to cause breaks precisely in the points of union to other flanges by screws. The manufacturing method object of the present invention solves this problem by making the integral part with the annular element without through holes, thus eliminating any point and line of union of the material flow, allowing a much more homogeneous distribution of the material. These through holes are made in a later machining stage after the flange has cooled.
    [0073] Furthermore, this form of manufacture with cold hole machining solves the problem of adapting to different standards. Flanges are made according to different established standards, such as the ISO standard or the ANSI standard. In these standards there are differences regarding the dimensions of the holes or holes through the flanges. In small flanges the differences are minimal, and the union between flanges of different standards is achieved, however, in larger dimensions, for example flanges greater than 100 mm in diameters, the holes or holes that house the screws do not coincide, and it is impossible to join an ISO flange with an ANSI flange. By means of the present invention, when manufacturing the flange without holes, said holes can be subsequently machined adapting them to the required standard.
    [0075] According to a particular embodiment of the invention, to obtain a flange like the previous one, with an inner concentric bushing that only has plastic, the method presents a preliminary injection of a bushing only in plastic, without reinforcing fibers, concentric and inside the integral piece. In this way, the flange obtained can be used for drinking water pipe networks, since this cap made only of plastic prevents the water from contacting the reinforcing fibers, thus adapting to the sanitary and consumption regulations.
    [0077] Brief description of the drawings
    [0079] Next, to facilitate understanding of the invention, by way of illustration but not limitation, an embodiment of the invention will be described which refers to a series of figures.
    [0081] Figure 1 is a perspective view of an embodiment of the flange object of the invention.
    [0083] Figure 2 is a plan view of the embodiment of the flange of Figure 1.
    [0085] Figure 3 is a schematic sectional elevation view of the flange of Figures 1 and 2 along the AA plane.
    [0087] Figure 4a is a sectional elevation view, showing an embodiment of the flange with all the fibers oriented in the same direction, this direction being parallel to the generatrix of the tubular body.
    [0089] Figure 4b is a sectional elevation view, similar to the previous one, showing a
    [0092] making the flange with all the fibers oriented in the same direction, in this case this direction being perpendicular to the generatrix of the tubular body.
    [0094] Figure 4c is a sectioned elevation view showing an embodiment of the flange with the reinforcing fibers of the tubular body parallel to the generatrix of the tubular body and the reinforcing fibers of the annular element perpendicular to the generatrix of the tubular body.
    [0096] Figure 4d is a sectional elevation view showing an embodiment of the flange with the reinforcing fibers of the tubular body perpendicular to the generatrix of the tubular body and the reinforcing fibers of the annular element parallel to the generatrix of the tubular body.
    [0098] Figure 4e is a sectional elevation view showing an embodiment of the flange with the reinforcing fibers of the tubular body parallel to the generatrix of the tubular body and the reinforcing fibers of the annular element without predetermined orientation, that is to say randomly oriented. In this case the absence of fill lines represents random orientation.
    [0100] Figure 4f is a sectional elevation view showing an embodiment of the flange with the reinforcing fibers of the tubular body perpendicular to the generatrix of the tubular body and the reinforcing fibers of the annular element without predetermined orientation, that is to say randomly oriented. In this case the absence of fill lines represents random orientation.
    [0102] Figure 4g is a sectional elevation view showing an embodiment of the flange with the reinforcing fibers of the annular element perpendicular to the generatrix of the tubular body and the reinforcing fibers of the tubular body without predetermined orientation, that is to say randomly oriented. In this case the absence of fill lines represents random orientation.
    [0104] Figure 4h is a sectioned elevation view showing an embodiment of the flange with the reinforcing fibers of the annular element parallel to the generatrix of the tubular body and the reinforcing fibers of the tubular body without predetermined orientation, that is to say randomly oriented. In this case the absence of fill lines represents random orientation.
    [0106] Figure 4i is a sectional elevation view showing an embodiment of the flange with all the reinforcing fibers without predetermined orientation, ie randomly oriented. In this case the absence of fill lines represents random orientation.
    [0108] Figure 5a is a perspective view of a flange object of the present invention with a first end of the elongated tubular body for fixing to a pipe element by electroweldable fusion.
    [0110] Figure 5b is a perspective view of a flange object of the present invention with a first end of the tubular body with a male connector for fixing to a pipe element by welding with an electroweldable fitting.
    [0112] Figure 5c is a perspective view of a flange object of the present invention with a first end of the short tubular body for fixing to a pipe element by butt welding.
    [0114] Figure 5d is a perspective view of a flange object of the present invention with a first end of the tubular body with a mouthpiece for fixing to a pipe element by socket welding.
    [0116] Figure 6 shows a particular embodiment of the flange object of the present invention with a concentric bushing inside the integral part, the tubular body and said bushing having variable thickness along its length.
    [0118] In these figures, reference is made to a set of elements that are:
    [0119] 1. integral part of flange
    [0120] 2. tubular flange body
    [0121] 3. first end of the tubular body
    [0122] 4. second end of tubular body
    [0123] 5. annular flange element
    [0124] 6. through holes of ring element
    [0125] 7. reinforcing fibers of the integral part
    [0126] 8. cap
    [0127] 9. nerves
    [0129] Detailed description of the invention
    [0131] The object of the present invention is a flange for connecting pipe elements.
    [0133] As can be seen in the figures, the connecting flange has an integral part 1 made of plastic, preferably polyethylene or polypropylene, although it can also be made of other thermoplastics such as polyamide, ABS or the like. This integral part 1 is formed by a tubular body 2 with a first end 3 with fixing means to a pipe element and a second end 4, and an annular element 5 emerging from the second end 4 of the tubular body 2, which will be fixed by means of screws to another similar flange arranged in another element of the pipe network to which the first one is going to be attached. which in turn has a plurality of through holes. For this, the annular element 5 has a plurality of through holes 6 through which the screws are inserted for the connection. As can be clearly seen in Figures 4a-4i, the integral part 1 has inside reinforcing fibers 7, both inside the tubular body 2 and inside the annular element 5. These reinforcing fibers 7 reinforce the integral part 1 to provide a strong flange that securely joins the elements of pipe networks.
    [0135] According to different embodiments, the means of fixing the first end of the tubular body to the pipe element are adapted to all the joint joining methods existing today, specifically for fixing selected between butt welding, socket welding and welding with accessories. electroweldable. Figures 5a and 5b show particular embodiments of flanges with the first end 3 of the tubular body 2 adapted for joining to a pipe element by electroweldable means. Figure 5c shows a flange with the first short end for butt welding, while Figure 5d shows a flange with the first mouth end for socket welding.
    [0137] As for the reinforcing fibers 7, in particular these are not metallic, and preferably they are glass fibers, carbon fibers and a combination of both.
    [0140] According to different particular embodiments of the invention, at least part of the reinforcing fibers 7 are oriented according to a predetermined direction, which provides greater resistance according to a certain orientation of the forces received, in different areas of the tubular body 2 or in ring element 5.
    [0142] Figures 4a, 4b show embodiments in which all the reinforcing fibers 7 are oriented in a predetermined direction, that is, the reinforcing fibers 7 that are arranged inside the tubular body 2 are oriented in the same direction as those in they are arranged inside the annular element 5. Figure 4a shows an embodiment in which the reinforcing fibers 7 of the tubular body 2 and of the annular element 5 have an orientation parallel to the generatrix of the tubular body. This configuration has application in systems where the flange is subjected to tensile and compressive forces, generally vertical installations such as uprights. Figure 4b shows, on the contrary, an embodiment in which the reinforcing fibers 7 have an orientation perpendicular to the generatrix of the tubular body 2. This orientation is the one that provides greater rigidity throughout the entire integral part, since the forces received by the tightening between flanges will be perpendicular to the reinforcing fibers 7.
    [0144] Alternatively, the reinforcing fibers 7 inside the tubular body 2 may have an orientation perpendicular to those inside the annular element 5, as shown in Figures 4c and 4d. Thus, in the case of Figure 4c, the reinforcing fibers 7 inside the tubular body 2 have an orientation parallel to the generatrix of the tubular body 2, while those inside the annular element 5 have an orientation perpendicular to said body generatrix. tubular 2, for applications where the flange is subjected to traction and compression forces in vertical lines where the flange is screwed to a fixed element. Alternatively, as shown in figure 4d, the reinforcing fibers 7 inside the tubular body 2 have an orientation perpendicular to the generatrix of the tubular body 2, while those inside the annular element 5 have an orientation parallel to said generatrix of the tubular body 2, for use in horizontal layouts, where the flanges may be subject to bending.
    [0145] According to different alternative embodiments of the invention, all the reinforcing fibers 7 may be randomly oriented, as shown in figure 4i, for applications of connections to elements that may present vibrations, such as hydraulic pumps, or only part of them may be oriented according to a predetermined direction while the rest will be arranged without predetermined orientation, that is to say, with a random orientation, as can be seen in Figures 4e, 4f, 4g and 4h. This configuration can be used for general applications for fluids where constant temperature changes and high differentials occur, taking into account the previous cases.
    [0146] According to a particular embodiment of the invention, the flange has a bushing 8 concentric and interior to the integral part 1, along its entire length, said bushing 8 being made of plastic and without reinforcing fibers inside . This embodiment will be very useful for networks of water pipes for consumption, since the bushing 8 made solely of plastic would avoid the contact of the water with the reinforcing fibers 7, thus adapting to the sanitary and consumption standard.
    [0148] Figure 6 shows an embodiment of the invention with bush 8 according to the above, in which the tubular body 2 and the bush 8 have a variable thickness along their length, specifically as can be seen in figure 6, at the first end 3 of the tubular body 2, which is going to be welded to a pipe element, the thickness of the bushing 8 will be greater and the thickness of the tubular body 2 will be less, and on the contrary, at the second end 4 of the tubular body 2, from which the annular element 5 emerges, the thickness of the bush 8 will be less and the thickness of the tubular body 2 will be greater. This is because fiber reinforced plastic 7 has greater fluidity than non-fiber plastic. Therefore, to guarantee a good welding of the flange to the pipe element, in the welding zone with said pipe element a greater quantity of material will be left without fiber, while in the zone of the annular element 5 a greater quantity of material will be left with fiber 7, to reinforce the joint area to the other flange, and make it more resistant.
    [0150] Preferably, as seen in the figures, the connecting flange object of the present invention has a plurality of radial ribs 9 arranged between the outer surface of the tubular body 2 and the annular element 5, perpendicular to both and located between the through holes 6 ring element 5.
    [0153] The percentage of fiber added to the plastic can vary from 5% to 50% depending on the resistance required by the pipe network. Preferably, the amount of fiber can be considered 20% -40% by weight, although when the reinforcement needs are high, the amount of fiber can be increased.
    [0155] A further object of the present invention is a method of manufacturing a pipe element joint flange. This method presents an injection of plastic into a mold with the shape of the integral part 1 to be obtained, which in turn has a tubular body 2 and an annular element 5 emerging from one of the ends of the tubular body 2, and an introduction of reinforcing fibers 7 together with the plastic in the mold through certain injection points, to obtain a specific orientation of the reinforcing fibers 7. The integral part 1 obtained from plastic and fiber fibers is then cooled. reinforcement 7, and finally through-hole machining 6 is performed in the annular element 5 of the integral part 1.
    [0157] According to a particular embodiment of the invention, to obtain a flange with a concentric bushing 8 inside the integral part 1 that only has plastic, the method presents a preliminary injection of a bushing 8 only in plastic, without reinforcing fibers , concentric and interior to the integral piece 7. Thus, the flange obtained can be used for networks of water pipes for consumption, since the cap 8 made solely of plastic avoids the contact of water with the reinforcing fibers 7 of the piece integral 1, thus adapting to the health and consumption regulations.
    1
    权利要求:
    Claims (17)
    [1]
    1. Pipe element union flange, comprising an integral piece (1) made of plastic, which in turn comprises a
    - tubular body (2) having a first end (3) with fixing means to a pipe element, and a second end (4), and
    - An annular element (5) emerging from the second end (4) of the tubular body (2), which in turn comprises a plurality of through holes (6), characterized in that the integral part (1) comprises inside fibers of reinforcement (7).
    [2]
    2. Pipe element union flange, according to claim 1, in which the reinforcing fibers (7) are selected from among glass fibers, carbon fibers and a combination of both.
    [3]
    3. Pipe element joining flange according to any one of the preceding claims, in which at least part of the reinforcing fibers (7) are oriented according to a predetermined direction.
    [4]
    4. Pipe element union flange, according to the preceding claim, in which the reinforcing fibers (7) arranged inside the tubular body (2) are oriented in the same direction as those arranged inside the annular element (5).
    [5]
    5. Pipe element union flange, according to the preceding claim in which the reinforcing fibers (7) have an orientation selected between orientation parallel to the generatrix of the tubular body (2) and orientation perpendicular to the generatrix of the tubular body ( 2).
    [6]
    6. Pipe element connection flange, according to claim 3, in which the reinforcing fibers (7) arranged inside the tubular body (2) are oriented perpendicular to those arranged inside the annular element ( 5).
    [7]
    7. Pipe element union flange, according to the preceding claim, in which the reinforcing fibers (7) arranged inside the tubular body (2) have an orientation selected from orientation parallel to the generatrix of the tubular body (2 ) and orientation perpendicular to the generatrix of the tubular body (2).
    [8]
    8. Pipe element connection flange according to claim 3, in which the reinforcing fibers (7) arranged inside the tubular body (2) are randomly oriented.
    [9]
    9. Pipe element joining flange according to any of claims 3 or 8, in which the reinforcing fibers (7) arranged inside the annular element (5) are randomly oriented.
    [10]
    10. Pipe element union flange, according to any of the preceding claims, comprising a bushing (8), arranged concentric and inside the integral part (1), along its entire length, said bushing being made of plastic and without reinforcing fibers inside.
    [11]
    11. Flange for connecting pipe elements, according to the preceding claim, wherein the tubular body (2) and the bushing (8) have a variable thickness along their length.
    [12]
    12. Pipe element joining flange, according to any of the preceding claims, comprising a plurality of radial ribs (9) arranged between the outer surface of the tubular body (2) and the annular element (5), perpendicular to both and located between the through holes (6) of the annular element (5).
    [13]
    13. Pipe element joining flange, according to any of the preceding claims, comprising an amount of fiber of 5% -50% by weight.
    [14]
    14. Pipe element union flange, according to the preceding claim, comprising an amount of fiber of 20% -40% by weight.
    1
    [15]
    15. Pipe element joining flange, according to any of the preceding claims, in which the means for fixing the first end (3) of the tubular body (2) to the pipe element are adapted for the fixing selected between butt welding , socket welding and welding with electroweldable accessories.
    [16]
    16. Manufacturing method of pipe element union flange, characterized in that it comprises
    - injection of plastic into a mold with the form of an integral part (1) which in turn comprises a tubular body (2) and an annular element (5) emerging from one of the ends of the tubular body (2),
    - introduction of reinforcing fibers (7) together with the plastic in the mold through certain injection points to obtain a determined orientation of the reinforcing fibers (7),
    - cooling of the integral part (1) made of plastic and reinforcing fibers (7),
    - and machining of a plurality of through holes (6) in the annular element (5) of the integral part (1).
    [17]
    17. Method of manufacturing pipe element union flange, according to the previous claim, characterized in that it comprises a preliminary injection of a bushing (8) only in plastic, concentric and inside the integral part (1).
    1
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    同族专利:
    公开号 | 公开日
    ES2797000B2|2021-12-16|
    WO2020240060A1|2020-12-03|
    引用文献:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201930481A|ES2797000B2|2019-05-30|2019-05-30|PIPE ELEMENT JOINT FLANGE AND MANUFACTURING METHOD OF PIPE ELEMENT JOINT FLANGE|ES201930481A| ES2797000B2|2019-05-30|2019-05-30|PIPE ELEMENT JOINT FLANGE AND MANUFACTURING METHOD OF PIPE ELEMENT JOINT FLANGE|
    PCT/ES2020/070307| WO2020240060A1|2019-05-30|2020-05-13|Joining flange for piping elements and method for manufacturing a joining flange for piping elements|
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