High-pressure connector

Abstract

The utility model relates to the technical field of high-pressure manifolds, and discloses a high-pressure connector which comprises a connector body and a bearing ring, the bearing ring comprises a bearing inner ring and a bearing outer ring, one of the bearing inner ring and the bearing outer ring is connected with the end of the connector body, and the other of the bearing inner ring and the bearing outer ring is connected with the end of the connector body. The other one of the bearing inner ring and the bearing outer ring is connected with a connecting piece, and the bearing inner ring and the bearing outer ring are connected through a steel ball. The high-pressure connector is arranged to be of a split structure, the connector body and the connecting piece can be detachably connected through the bearing inner ring and the bearing outer ring, when any part of the high-pressure connector is damaged, only the part needs to be replaced, the whole high-pressure connector cannot be scrapped, the service life of the high-pressure connector is prolonged, and the service life of the high-pressure connector is prolonged. And the use cost of the high-pressure joint is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure manifold technical field, concretely relates to a high pressure joint. BACKGROUND

[0002] The movable bend is used in the construction operation such as fracturing, cementing and the like related to oil and gas exploitation, is used for connecting the flow line of different spatial positions, and changes the flow direction of fluid. In the process of conveying high-pressure fluid, especially fluid containing solid particles, the movable bend needs to withstand high pressure and at the same time needs to withstand the scouring of high-speed fluid.

[0003] In the prior art, the movable bend is usually of an integral structure, and the scouring and wear conditions at different positions are different in actual use.

[0004] The raceway needs to rotate due to cooperation with the steel ball, and is seriously worn during rotation, and generally needs to be hardened, such as carburizing quenching, nitriding, surface quenching and the like. SUMMARY

[0005] The utility model aims at least solve the prior art, the movable bend is of integral structure, the life is shorter, the technical problem of high processing cost.

[0006] To solve the above technical problems, the utility model provides a high pressure joint, including joint body and bearing ring, the bearing ring includes bearing inner ring and bearing outer ring, one of bearing inner ring and bearing outer ring is connected with the end of joint body, the other of bearing inner ring and bearing outer ring is connected with connecting piece, bearing inner ring and bearing outer ring are connected through steel ball.

[0007] In some embodiments, the end of the joint body is provided with a first connecting pipe part connected with the bearing inner ring, or the end of the joint body is provided with a second connecting pipe part connected with the bearing outer ring.

[0008] In some embodiments, the joint body and the bearing ring are connected through threads; or

[0009] The joint body and the bearing ring are connected through interference; or

[0010] The joint body and the bearing ring are connected through adhesive.

[0011] In some embodiments, an outer periphery of the bearing inner ring is provided with a first groove, an inner periphery of the bearing outer ring is provided with a second groove, and the first groove and the second groove are butted to form a raceway for accommodating the steel ball.

[0012] In some embodiments, a seal is provided between the joint body and the bearing ring.

[0013] In some embodiments, the seal comprises a seal ring body and an anti-extrusion ring provided on a circumferential outer side of the seal ring body.

[0014] In some embodiments, the seal ring body is a non-metal seal ring body, and the anti-extrusion ring is a metal anti-extrusion ring; and / or

[0015] The seal ring body and the anti-extrusion ring are in a split structure, or the seal ring body and the anti-extrusion ring are in a vulcanized integrated structure.

[0016] In some embodiments, the joint body is made of a corrosion-resistant material, and the corrosion-resistant material comprises stainless steel.

[0017] The bearing ring is made of a hardenable material, and the hardenable material comprises low-carbon alloy steel or medium-carbon alloy steel.

[0018] In some embodiments, the end of the bearing ring is further provided with a retainer.

[0019] In some embodiments, the high-pressure joint is a bend joint or a direct joint.

[0020] The high-pressure joint provided by the embodiment of the utility model discloses a split structure, comprising a joint body and a bearing ring, the bearing ring comprises a bearing inner ring and a bearing outer ring, one of the bearing inner ring and the bearing outer ring is connected with the end of the joint body, the other of the bearing inner ring and the bearing outer ring is connected with a connecting piece, the bearing inner ring and the bearing outer ring are connected through a steel ball, the joint body and the connecting piece can be detachably connected through the bearing inner ring and the bearing outer ring, when any one component of the high-pressure joint is damaged, the component can be replaced, the high-pressure joint is not scrapped as a whole, the service life of the high-pressure joint is prolonged, and the use cost of the high-pressure joint is reduced. ACCURATE DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments in the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating labor intensity.

[0022] Figure 1 It is the exploded structural schematic view of high pressure connector of the utility model embodiment;

[0023] Figure 2 It is another direction's exploded structural schematic view of high pressure connector of the utility model embodiment;

[0024] Figure 3 It is the cross section view of the assembly structure of high pressure connector and connecting piece of the utility model embodiment;

[0025] Figure 4 It is the side view (including partial section view) of the assembly structure of high pressure connector and connecting piece of the utility model embodiment;

[0026] Figure 5 It is Figure 4 It is the enlarged structural schematic view of the part of circle A;

[0027] Figure 6 It is the cross section view of the assembly structure of high pressure connector of the utility model embodiment;

[0028] Figure 7 It is the structural schematic view of sealing element of high pressure connector of the utility model embodiment.

[0029] Reference signs:

[0030] 10-first connector, 20-second connector, 30-third connector; 1-connector body, 11-first connecting pipe part, 12-second connecting pipe part; 2-bearing ring, 21-bearing inner ring, 211-first recess, 22-bearing outer ring, 221-second recess; 3-steel ball; 4-sealing element, 41-sealing ring body, 42-anti-extrusion ring; 5-retainer ring. DETAILED DESCRIPTION

[0031] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0032] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be construed as limiting, but merely as exemplification of the embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.

[0033] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0034] These and other characteristics of the present application will become apparent from the following description of the preferred forms given, by way of non-limiting example, with reference to the attached drawings.

[0035] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the present invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0036] The above and other aspects, features and advantages of the present invention will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0037] Specific embodiments of the present invention will now be described with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present invention, which may be implemented in various ways. Well-known and / or repeated functions and structures have not been described in detail to avoid unnecessary or redundant details that could obscure the present invention. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of substantially any suitable detailed structures.

[0038] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to the present invention.

[0039] Figures 1 to 7 A schematic diagram of the high-pressure connector provided in an embodiment of this utility model is shown. Figures 1 to 7 As shown, this utility model embodiment provides a high-pressure connector, including a connector body 1 and a bearing ring 2. The bearing ring 2 includes an inner bearing ring 21 and an outer bearing ring 22. One of the inner bearing ring 21 and the outer bearing ring 22 is connected to the end of the connector body 1, and the other of the inner bearing ring 21 and the outer bearing ring 22 is connected to a connector. The inner bearing ring 21 and the outer bearing ring 22 are connected by a steel ball 3.

[0040] The connector can be another high-pressure connector. For example, in this embodiment, the high-pressure connector can include a first connector 10, a second connector 20 and a third connector 30. The first connector 10 is an intermediate connector, including a connector body 1 and bearing rings 2 respectively disposed at both ends of the connector body 1. One end of the first connector 10 is connected to the second connector 20 through the first bearing ring, and the other end of the first connector 10 is connected to the third connector 30 through the second bearing ring.

[0041] Optionally, the connector body 1 and the bearing ring 2 are connected by threads, or by interference fit, or by adhesive, so that the connector body 1 and the bearing ring 2 can be reliably fixedly connected.

[0042] The inner ring 21 of the bearing is located inside the outer ring 22 of the bearing and is connected to the outer ring 22 of the bearing through the steel ball 3, so that the inner ring 21 and the outer ring 22 of the bearing can rotate relative to each other. This allows the second connector 20 or the third connector 30 to rotate relative to the first connector 10 (the first connector 10 is connected to one of the inner ring 21 and the outer ring 22 of the bearing, and the second connector 20 or the third connector 30 is connected to one of the inner ring 21 and the outer ring 22 of the bearing). Since the bearing ring 2 is fixed to the connector body 1, it can prevent the bearing ring 2 and the connector body 1 from loosening or separating during rotation, which would lead to connector failure.

[0043] The high-pressure connector provided in this embodiment features a split structure, comprising a connector body 1 and a bearing ring 2. The bearing ring 2 includes an inner bearing ring 21 and an outer bearing ring 22. One of the inner bearing ring 21 and the outer bearing ring 22 is connected to the end of the connector body 1, and the other is connected to a connector. The inner bearing ring 21 and the outer bearing ring 22 are connected by steel balls 3. The connector body 1 and the connector can be detachably connected via the inner bearing ring 21 and the outer bearing ring 22. If any component of the high-pressure connector is damaged, only that component needs to be replaced, preventing the entire high-pressure connector from becoming unusable. This extends the service life of the high-pressure connector and reduces its operating costs. The aforementioned high-pressure connector exhibits high reliability and is particularly suitable for high-pressure environments exceeding 175 MPa.

[0044] In some embodiments, the end of the connector body 1 is provided with a first connecting pipe portion 11 that connects to the inner ring 21 of the bearing, or the end of the connector body 1 is provided with a second connecting pipe portion 12 that connects to the outer ring 22 of the bearing.

[0045] The first connecting tube 11 can be fixedly connected to the inner ring 21 of the bearing by inserting it into the inner ring 21 of the bearing, and the outer ring 22 of the bearing can be fixedly connected to the connector body 1 by inserting it into the second connecting tube 12 of the bearing. The assembly and disassembly are convenient and quick.

[0046] like Figure 1 As shown, the first end of the connector body 1 of the first connector 10 is provided with a first connecting tube 11, and the end of the second connector 20 connected to the first end of the connector body 1 of the first connector 10 is provided with a corresponding second connecting tube 12. The first connecting tube 11 of the first connector 10 and the second connecting tube 12 of the second connector 20 are connected by a first bearing ring. The second end of the connector body 1 of the first connector 10 is provided with a second connecting tube 12, and the end of the third connector 30 connected to the second end of the connector body 1 of the first connector 10 is provided with a corresponding first connecting tube 11. The second connecting tube 12 of the first connector 10 and the first connecting tube 11 of the third connector 30 are connected by a second bearing ring.

[0047] In the embodiment, the first connecting pipe part 11 and the second connecting pipe part 12 are respectively arranged at the two ends of the first joint 10, so that the first joint 10 can be connected with other connecting parts according to actual needs. In specific implementation, the connecting pipe parts at the two ends of the first joint 10 can also be the same, for example, the first joint 10 is provided with the first connecting pipe part 11 at both ends; or the first joint 10 is connected by only one end like the second joint 20 and the third joint 30.

[0048] In some embodiments, as shown in Figs. 1-3, the bearing inner ring 21 is arranged in the inner cavity of the joint body 1, and the bearing outer ring 22 is arranged in the outer cavity of the joint body 1. Figure 1 、 Figure 2 、 Figure 5 and Figure 6 In some embodiments, as shown in Figs. 1-3, the outer periphery of the bearing inner ring 21 is provided with a first groove 211, and the inner periphery of the bearing outer ring 22 is provided with a second groove 221, and the first groove 211 and the second groove 221 are connected to form a raceway for accommodating the steel ball 3.

[0049] In some embodiments, the joint body 1 is made of a corrosion-resistant material; and the bearing ring 2 is made of a material that can be hardened.

[0050] In actual use of the high-pressure joint, the joint body 1 contacts the fluid being conveyed, which is generally a corrosive liquid, a mixed medium containing solid particles, etc., and is prone to corrosion, erosion, pitting, wear, etc. at the inner cavity. Although the bearing ring 2 part does not contact the fluid, in actual use, the bearing ring 2 needs to rotate relatively, and the bearing inner ring 21 and the bearing outer ring 22 are connected through the steel ball 3. In order to improve the wear resistance of the bearing ring 2 and resist deformation caused by extrusion of the steel ball 3, the surface of the bearing ring 2 needs to have a certain hardness. Therefore, the joint body 1 contacting the fluid can be made of a material with better corrosion resistance and erosion resistance, such as stainless steel, to obtain a corrosion-resistant joint body or an erosion-resistant joint body. The bearing ring 2 that needs to be surface hardened is made of low-carbon alloy steel, such as 4715, 8620, etc., and the surface hardness is improved through carburizing and quenching in the subsequent processing process; or the bearing ring 2 is made of medium-carbon alloy steel, such as 42CrMo, 40Cr, 45 steel, etc., and the surface hardness can be improved through surface quenching, nitriding, etc., to improve the wear resistance and extrusion deformation resistance of the bearing ring 2. In the embodiment, the hardness of the bearing ring 2 is generally greater than 50HRC.

[0051] As can be seen from the above, in the embodiment, the high-pressure joint is provided in a split structure, and in the production process of the high-pressure joint, only the bearing ring 2 can be carburized and quenched or subjected to other hardening treatment, thereby reducing the production cost of the hardening treatment of the high-pressure joint. In addition, in the embodiment, the high-pressure joint can be more targetedly selected in material and structure design (for example, a more suitable material and surface treatment method are adopted) according to actual needs, so as to achieve the purposes of prolonging the service life of the high-pressure joint and reducing the processing and use cost of the high-pressure joint.

[0052] In some embodiments, as shown in Figures 1 to 5 , and Figure 7 , a seal 4 is arranged between the joint body 1 and the bearing ring 2, which can reliably seal the joint body 1 and the bearing ring 2 and avoid fluid leakage. The seal 4 is preferably a packing seal, which has good sealing performance.

[0053] In some embodiments, as shown in Figure 7 , the seal 4 includes a seal ring body 41 and an anti-extrusion ring 42 arranged on the circumferential outer side of the seal ring body 41.

[0054] The seal ring body 41 is a whole annular ring, and the cross section is rectangular or L-shaped. In order to ensure the structural stability and processing workability of the seal 4, a certain chamfer or R angle is designed at the cross section of the seal ring body 41.

[0055] The seal ring body 41 is made of non-metallic material, such as NBR or HNBR and similar materials, which has certain elasticity, hardness and tear resistance, and reliable sealing. The anti-extrusion ring 42 is made of metal material, such as copper, stainless steel and the like, which can effectively support the seal ring body 41 and avoid the deviation of the seal ring body 41.

[0056] Optionally, the seal ring body 41 and the anti-extrusion ring 42 are of a split structure, which can be separately processed and formed, and the processing cost is relatively low. Or the seal ring body 41 and the anti-extrusion ring 42 are of a vulcanization integrated structure, which is integrated by vulcanization process, so as to ensure good sealing performance (the split structure may have assembly error and the like, which can reduce the sealing performance).

[0057] In some embodiments, as shown in Figure 3 , the end of the bearing ring 2 is further provided with a retainer 5. The retainer 5 is a grease retainer, which can effectively limit the connection of the high-pressure joint and the connecting piece and ensure the connection reliability.

[0058] In some embodiments, the high-pressure joint is a bend joint or a direct joint. For example, in the embodiment, the first joint 10 and the second joint 20 are bend joints, and the third joint 30 is a direct joint, which has wide application range.

[0059] The above description is only the preferred embodiment of the present application and the explanation of the applied technology. Those skilled in the art should understand that the disclosed range in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by the combination of the above technical features or their equivalent features without departing from the disclosed concept. For example, the technical solution formed by the mutual replacement of the above features and the technical features with similar functions disclosed in the present application (but not limited to) can be formed.

[0060] Furthermore, although operations have been depicted in a particular order, this should not be understood as requiring or implying that such operations are performed in the particular order shown or in sequential order, and that all operations be performed, depending upon the circumstances. In certain circumstances, multitasking and parallel processing can be advantageous. Likewise, the specific sequence of operations described above is illustrative. Certain of the operations can be based on processing and functions implemented by a processor, operating system, or application as alternative embodiments. Moreover, acts associated with a user or administrator can include a human interaction where relevant, such as the selection of a button by a user, or the like. Similarly, while operations are depicted above as following a specific sequence, this requires not be understood as requiring or implying that such operations be performed in the specific order shown or in sequential order, and that all operations be performed, depending upon the circumstances. In certain circumstances, multitasking and parallel processing can be advantageous. Likewise, the specific sequence of operations described above is illustrative. Certain of the operations can be based on processing and functions implemented by a processor, operating system, or application as alternative embodiments. Moreover, acts associated with a user or administrator can include a human interaction where relevant, such as the selection of a button by a user, or the like.

[0061] Although the subject matter has been described in language specific to structural features and / or methodological acts, it is to be understood that the subject defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A high-pressure connector, characterized in that, The device includes a connector body and a bearing ring, wherein the bearing ring comprises an inner bearing ring and an outer bearing ring, one of which is connected to an end of the connector body, and the other of which is connected to a connector, and the inner bearing ring and the outer bearing ring are connected by a steel ball.

2. The high-pressure connector according to claim 1, characterized in that, The end of the connector body is provided with a first connecting pipe section that connects to the inner ring of the bearing, or the end of the connector body is provided with a second connecting pipe section that connects to the outer ring of the bearing.

3. The high-pressure connector according to claim 2, characterized in that, The connector body and the bearing ring are connected by threads; or The joint body and the bearing ring are interference-fitted; or The joint body and the bearing ring are connected by an adhesive.

4. The high-pressure connector according to claim 1, characterized in that, The outer circumference of the inner ring of the bearing is provided with a first groove, and the inner circumference of the outer ring of the bearing is provided with a second groove. The first groove and the second groove are joined together to form a raceway for accommodating the steel ball.

5. The high-pressure connector according to claim 1, characterized in that, A seal is provided between the connector body and the bearing ring.

6. The high-pressure connector according to claim 5, characterized in that, The sealing element includes a sealing ring body and an anti-extrusion ring disposed on the outer circumferential side of the sealing ring body.

7. The high-pressure connector according to claim 6, characterized in that, The sealing ring body is a non-metallic sealing ring body, and the anti-extrusion ring is a metallic anti-extrusion ring; and / or The sealing ring body and the anti-extrusion ring are separate structures, or the sealing ring body and the anti-extrusion ring are vulcanized integral structures.

8. The high-pressure connector according to claim 1, characterized in that, The connector body is made of a corrosion-resistant material, including stainless steel. The bearing ring is made of a hardenable material, including low-carbon alloy steel or medium-carbon alloy steel.

9. The high-pressure connector according to claim 8, characterized in that, The bearing ring is also provided with a retaining ring at its end.

10. The high-pressure connector according to claim 1, characterized in that, The high-pressure connector is either a bent connector or a straight connector.

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