Detachable high-pressure manifold

Abstract

The utility model discloses a detachable high-pressure manifold which comprises a plurality of pipe joints, every two adjacent pipe joints are detachably connected through a connecting structure, each connecting structure comprises two flanges, two fixing plates and a plurality of bolts, the two flanges are arranged outside the ends, close to each other, of the two pipe joints in a sleeved mode respectively, and the two fixing plates are arranged on the two flanges respectively. A plurality of positioning grooves are formed in the outer walls of the two flanges in the circumferential direction, and the two fixing plates are arranged outside the two pipe joints in a sliding and sleeving mode respectively. The pipe joint is convenient to disassemble and assemble, circumferential stress caused by high-pressure liquid in the pipe to a plurality of bolts can be differentiated, the phenomenon of leakage at the joint of pipe joints caused by damage of the bolts due to overlarge circumferential stress of the bolts is effectively reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure pipes, in particular to a detachable high-pressure pipe manifold. Background Art

[0002] The detachable high-pressure manifold is a special pipeline gathering and transportation equipment used in special construction operations in oil fields. The existing detachable high-pressure manifold is basically made of multiple pipe sections spliced ​​together, generally using connectors or welding for splicing. When using connectors for connection, the high-pressure liquid inside the pipeline is easy to cause impact damage to the connectors, thereby causing internal liquid leakage, while welding is inconvenient for disassembly and assembly. Summary of the invention

[0003] In view of the above problems existing in the existing detachable high-pressure pipe manifold, the present invention aims to provide a detachable high-pressure pipe manifold which is easy to disassemble, has high stability and strong sealing performance.

[0004] The specific technical solutions are as follows:

[0005] A detachable high-pressure manifold comprises: a plurality of pipe sections, two adjacent pipe sections are detachably connected via a connecting structure, and the connecting structure comprises:

[0006] Two flanges, the two flanges are respectively sleeved on the outside of the ends of the two pipe sections close to each other, and the outer walls of the two flanges are provided with a plurality of positioning grooves along the circumferential direction;

[0007] Two fixing plates, the two fixing plates are slidably sleeved on the outside of the two pipe sections, wherein one fixing plate has a plurality of positioning posts on a side close to the other fixing plate, and the other fixing plate has a plurality of positioning holes, and the plurality of positioning posts respectively pass through the plurality of positioning grooves and are respectively positioned and matched with the plurality of positioning holes;

[0008] A plurality of bolts are respectively passed through one of the fixing plates, the two flanges, and the other fixing plate and are respectively threadedly connected with fastening nuts.

[0009] As a further improvement and optimization of the present solution, each of the pipe segments includes a plug-in section, a main body section and a connecting section which are connected in sequence. The outer diameter of the plug-in section is smaller than the outer diameter of the main body section, and the inner diameter is the same as the inner diameter of the main body section. The outer diameter of the connecting section is the same as the outer diameter of the main body section, and the inner diameter is the same as the outer diameter of the plug-in section. When two adjacent pipe segments are connected, the plug-in section of one of the pipe segments is plugged into the connecting section of the other pipe segment.

[0010] As a further improvement and optimization of this solution, the length of the plug-in section is equal to the length of the connecting section.

[0011] As a further improvement and optimization of the present solution, a first limiting surface is formed at the connection between the plug-in section and the main section, and a second limiting surface is formed at the connection between the connecting section and the main section. When two adjacent pipe sections are connected, when the plug-in section of one pipe section is plugged into and matched with the connecting section of the other pipe section, the first limiting surface of one pipe section is limitedly matched with the end portion of the connecting section of the other pipe section, and the second limiting surface of the other pipe section is limitedly matched with the end portion of the plug-in section of one pipe section.

[0012] As a further improvement and optimization of the present solution, a first sealing groove is coaxially arranged on the end face of the connecting section, and a first sealing convex step matching the first sealing groove is arranged on the first limiting surface. When the two adjacent pipe sections are connected, the first sealing convex step on one of the pipe sections seals with the first sealing groove of the other pipe section.

[0013] As a further improvement and optimization of this solution, the second limiting surface is coaxially provided with a second sealing groove, and the end surface of the plug-in section is provided with a second sealing convex step matching the second sealing groove, and the second sealing convex step is sealingly matched with the second sealing groove.

[0014] As a further improvement and optimization of the present solution, both inner and outer sides of the ends of the first sealing convex step and the second sealing convex step are chamfered.

[0015] As a further improvement and optimization of this solution, the inner wall of each pipe segment has an anti-corrosion layer.

[0016] As a further improvement and optimization of the present solution, one of the fixing plates and a plurality of the positioning posts are an integrated structure.

[0017] Compared with the prior art, the above technical solution has the following positive effects:

[0018] (1) In the utility model, the two pipe sections are axially and circumferentially positioned and locked by a plurality of bolt and nut structures, and the two pipes are circumferentially limited again by a plurality of positioning columns respectively cooperating with a plurality of positioning grooves and a plurality of positioning holes. This is not only convenient for disassembly and assembly, but also can differentiate the circumferential stress caused by the high-pressure liquid in the pipe on the plurality of bolts, effectively reduce the damage of the bolts caused by excessive circumferential stress of the bolts, and cause leakage at the connection between the pipe sections, thereby improving the service life.

[0019] (2) In the utility model, when two pipe sections are connected, in order to allow the first sealing convex step and the second sealing convex step on the plug-in section of one pipe section to be smoothly and sealably inserted into the first sealing groove and the second sealing groove on the connecting section of the other pipe section, the inner and outer sides of the ends of the first sealing convex step and the second sealing convex step are both chamfered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a detachable high-pressure manifold of the utility model;

[0021] Figure 2 This is an exploded schematic diagram of a detachable high-pressure manifold of the utility model;

[0022] Figure 3 This is a cross-sectional view of a detachable high-pressure manifold of the utility model;

[0023] Figure 4 It is an exploded cross-sectional view of a detachable high-pressure manifold of the utility model;

[0024] Figure 5 It is a cross-sectional schematic diagram of two pipe sections of a detachable high-pressure manifold according to the utility model that are plugged in and matched;

[0025] In the accompanying drawings: 1, pipe joint; 2, connecting structure; 11, plug-in section; 12, main section; 13, connecting section; 111, first sealing convex step; 112, second sealing convex step; 113, first limiting surface; 131, second limiting surface; 132, second sealing groove; 133, first sealing groove; 21, flange; 22, fixing plate; 23, positioning column; 24, bolt; 25, fastening nut; 211, positioning groove; 221, positioning hole. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Figure 1 This is a schematic diagram of the structure of a detachable high-pressure manifold of the utility model. Figure 2 This is an exploded schematic diagram of a detachable high-pressure manifold of the utility model. Figure 3 This is a cross-sectional view of a detachable high-pressure manifold of the utility model. Figure 4 This is an exploded cross-sectional view of a detachable high-pressure manifold of the utility model. Figure 5 The following is a cross-sectional diagram of two pipe sections of a detachable high-pressure manifold according to the utility model, as shown in FIG. Figure 1-5 As shown, a detachable high-pressure manifold of a preferred embodiment is shown, comprising: a plurality of pipe sections 1, two adjacent pipe sections 1 are detachably connected via a connecting structure 2, the connecting structure 2 comprises two flanges 21, two fixing plates 22 and a plurality of bolts 24, the two flanges 21 are respectively sleeved on the outside of one end of the two pipe sections 1 close to each other, the outer walls of the two flanges 21 are circumferentially provided with a plurality of positioning grooves 211, the two fixing plates 22 are respectively slidably sleeved on the outside of the two pipe sections 1, one of the fixing plates 22 is provided with a plurality of positioning columns 23 on a side close to the other fixing plate 22, the other fixing plate 22 is provided with a plurality of positioning holes 221, the plurality of positioning columns 23 respectively pass through the plurality of positioning grooves 211 and are respectively positioned and matched with the plurality of positioning holes 221, and the plurality of bolts 24 respectively pass through one of the fixing plates 22, the two flanges 21 and the other fixing plate 22 and are respectively threadedly connected with fastening nuts 25.

[0030] In this embodiment, when two pipe sections 1 are detachably connected by the connection structure 2, the two fixing plates 22 are slid inward, and the positioning columns 23 on one of the fixing plates 22 are passed through the positioning grooves 211 to extend into the positioning holes 221 on the other fixing plate 22, and then the bolts 24 are sequentially passed through one of the fixing plates 22, the two flanges 21 and the other fixing plate 22, and finally the fastening nuts 25 are respectively threadedly installed on the bolts 24, and the fastening nuts 25 are tightened.

[0031] In this embodiment, the two pipe sections 1 are axially and circumferentially positioned and locked by a plurality of bolts 24 and nut structures, and the two pipes are circumferentially limited again by a plurality of positioning columns 23 that are simultaneously positioned in cooperation with a plurality of positioning grooves 211 and a plurality of positioning holes 221. This is not only convenient for disassembly and assembly, but also can differentiate the circumferential stress of the bolts 24 caused by the high-pressure liquid in the pipe, effectively reduce the circumferential stress of the bolts 24 that is excessive and causes damage to the bolts 24 and causes leakage at the connection between the pipe sections 1 and 1, thereby increasing the service life.

[0032] In this embodiment, a plurality of positioning grooves 211 are circumferentially distributed on the outer walls of the two flanges 21 , which improves the manual insertion of a plurality of positioning columns 23 , thereby improving installation efficiency.

[0033] Furthermore, as a preferred embodiment, in order to improve the connection effect of two adjacent pipe segments 1, each pipe segment 1 includes a plug-in section 11, a main section 12 and a connecting section 13 which are connected in sequence. The outer diameter of the plug-in section 11 is smaller than the outer diameter of the main section 12, and the inner diameter is the same as the inner diameter of the main section 12. The outer diameter of the connecting section 13 is the same as the outer diameter of the main section 12, and the inner diameter is the same as the outer diameter of the plug-in section 11. When two adjacent pipe segments 1 are connected, the plug-in section 11 of one pipe segment 1 is plugged into the connecting section 13 of the other pipe segment 1.

[0034] Furthermore, as a preferred embodiment, the length of the plug section 11 is equal to the length of the connecting section 13 .

[0035] Furthermore, as a preferred embodiment, in order to further facilitate the control of the connection accuracy of two adjacent pipe sections 1, a first limiting surface 113 is formed at the connection between the plug-in section 11 and the main section 12, and a second limiting surface 131 is formed at the connection between the connecting section 13 and the main section 12. When the two adjacent pipe sections 1 are connected, when the plug-in section 11 of one pipe section 1 is plugged into and matched with the connecting section 13 of the other pipe section 1, the first limiting surface 113 of one pipe section 1 is limitedly matched with the end portion of the connecting section 13 of the other pipe section 1, and the second limiting surface 131 of the other pipe section 1 is limitedly matched with the end portion of the plug-in section 11 of one pipe section 1.

[0036] Furthermore, as a preferred embodiment, in order to improve the connection sealing effect of the two pipe sections 1, a first sealing groove 133 is coaxially provided on the end face of the connecting section 13, and a first sealing step 111 matching the first sealing groove 133 is provided on the first limiting surface 113. When two adjacent pipe sections 1 are connected, the first sealing step 111 on one of the pipe sections 1 is sealed and matched with the first sealing groove 133 of the other pipe section 1.

[0037] Furthermore, as a preferred embodiment, in order to further improve the connection sealing of the two pipe sections 1, the second limiting surface 131 is coaxially provided with a second sealing groove 132, and the end surface of the plug-in section 11 is provided with a second sealing step 112 matching the second sealing groove 132, and the second sealing step 112 is sealed and matched with the second sealing groove 132.

[0038] Furthermore, as a preferred embodiment, when two pipe sections 1 are connected, in order to enable the first sealing step 111 and the second sealing step 112 on the plug-in section 11 of one pipe section 1 to be smoothly sealed and inserted into the first sealing groove 133 and the second sealing groove 132 on the connecting section 13 of the other pipe section 1, respectively, the inner and outer sides of the ends of the first sealing step 111 and the second sealing step 112 are both chamfered.

[0039] Furthermore, as a preferred embodiment, in order to increase the service life of the pipe segment 1, the inner wall of each pipe segment 1 has an anti-corrosion layer.

[0040] Furthermore, as a preferred embodiment, a fixing plate 22 and a plurality of positioning posts 23 are integrated into one structure.

[0041] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable high-pressure manifold, characterized in that: include: A plurality of pipe segments, two adjacent pipe segments are detachably connected via a connecting structure, wherein the connecting structure comprises: Two flanges, the two flanges are respectively sleeved on the outside of the ends of the two pipe sections close to each other, and the outer walls of the two flanges are provided with a plurality of positioning grooves along the circumferential direction; Two fixing plates, the two fixing plates are slidably sleeved on the outside of the two pipe sections, wherein one fixing plate has a plurality of positioning posts on a side close to the other fixing plate, and the other fixing plate has a plurality of positioning holes, and the plurality of positioning posts respectively pass through the plurality of positioning grooves and are respectively positioned and matched with the plurality of positioning holes; A plurality of bolts are respectively passed through one of the fixing plates, the two flanges, and the other fixing plate and are respectively threadedly connected with fastening nuts.

2. The detachable high-pressure manifold according to claim 1, characterized in that: Each of the pipe sections includes a plug-in section, a main section and a connecting section which are connected in sequence. The outer diameter of the plug-in section is smaller than the outer diameter of the main section, and the inner diameter is the same as the inner diameter of the main section. The outer diameter of the connecting section is the same as the outer diameter of the main section, and the inner diameter is the same as the outer diameter of the plug-in section. When two adjacent pipe sections are connected, the plug-in section of one of the pipe sections is plugged into the connecting section of the other pipe section.

3. The detachable high-pressure manifold according to claim 2, characterized in that: The length of the plug-in section is equal to the length of the connecting section.

4. The detachable high-pressure manifold according to claim 3, characterized in that: A first limiting surface is formed at the connection between the plug-in section and the main section, and a second limiting surface is formed at the connection between the connecting section and the main section. When two adjacent pipe sections are connected, when the plug-in section of one pipe section is plugged into and matched with the connecting section of the other pipe section, the first limiting surface of one pipe section is limitedly matched with the end portion of the connecting section of the other pipe section, and the second limiting surface of the other pipe section is limitedly matched with the end portion of the plug-in section of one pipe section.

5. The detachable high-pressure manifold according to claim 4, characterized in that: A first sealing groove is coaxially arranged on the end surface of the connecting section, and a first sealing convex step matching the first sealing groove is arranged on the first limiting surface. When two adjacent pipe sections are connected, the first sealing convex step on one of the pipe sections seals with the first sealing groove of the other pipe section.

6. The detachable high-pressure manifold according to claim 5, characterized in that: The second limiting surface is coaxially provided with a second sealing groove, and the end surface of the plug-in section is provided with a second sealing convex step matching the second sealing groove, and the second sealing convex step is sealingly matched with the second sealing groove.

7. The detachable high-pressure manifold according to claim 6, characterized in that: The inner and outer sides of the ends of the first sealing convex step and the second sealing convex step are both chamfered.

8. The detachable high-pressure manifold according to claim 1, characterized in that: The inner wall of each pipe segment is provided with an anti-corrosion layer.

9. The detachable high-pressure manifold according to claim 1, characterized in that: One of the fixing plates and a plurality of the positioning posts are an integrated structure.

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