CN213512599U

CN213512599U - Elbow, high-pressure movable elbow and conveying pipeline

Info

Publication number: CN213512599U
Application number: CN202022432063.8U
Authority: CN
Inventors: 韦品荣
Original assignee: Huangshan Huirun Machinery Co ltd
Current assignee: Huangshan Huirun Machinery Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-06-22
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses an elbow, which relates to the technical field of pipeline connection, the elbow comprises a pipe body, at least one end of the pipe body is fixedly provided with a plug connector or an inserting groove, the outer surface of the plug connector comprises a plurality of outer annular surfaces, the diameters of the outer annular surfaces are reduced in sequence, the inner surface of the inserting groove comprises a plurality of inner annular surfaces, the diameters of the inner annular surfaces are increased in sequence, the outer annular surfaces are matched with the inner annular surfaces of the inserting groove used for being connected with the plug connector, and the matched outer annular surfaces and the inner annular surfaces are fixedly connected in the axial direction through a clamping structure; the utility model also discloses a high-pressure movable elbow, which comprises a plurality of connecting pipes connected in sequence, and the butt joint end parts of two adjacent connecting pipes are respectively provided with a plug-in connector and a plug-in groove; the utility model also discloses a conveying pipeline, the high pressure activity elbow on including can increase the life of elbow to reduce its cost of maintenance.

Description

Elbow, high-pressure movable elbow and conveying pipeline

Technical Field

The utility model relates to a pipe connection technical field especially relates to an elbow, high pressure activity elbow and pipeline.

Background

The high-pressure movable elbow is a common product of a connecting pipeline in oil field well repairing, well cementing, sand washing and fracturing operations, and has the characteristics of changeable adjusting direction, quick connection, reasonable structure, small volume, light weight, good sealing performance, safety, reliability and convenient operation; the high-pressure movable elbow is a fragile and consumable product in a fracturing pipeline, the wall thickness of the elbow must be rechecked at regular intervals for 6 months strictly according to the standard specification of API16C products, and the elbow must be scrapped and replaced when exceeding the specified wall thickness limit value; however, in recent years, as the petroleum resources are less and less, the difficulty of exploitation is increased, and in the fracturing process, the quality problems of puncture, burst and the like caused by erosion damage of the high-pressure movable elbow can often occur, so that the service life of the high-pressure elbow is shortened, and the operation cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elbow, high pressure activity elbow and conveying pipeline to solve the problem that above-mentioned prior art exists, can increase the life of elbow, and reduce its cost of maintenance.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides an elbow, including a pipe body, the fixed bayonet joint or the inserting groove that is provided with of at least one end of body, the surface of bayonet joint includes a plurality of outer annular face that link to each other in proper order, and a plurality of the diameter of outer annular face is along being close to the terminal surface direction of bayonet joint place tip reduces in proper order, the internal surface of inserting groove includes a plurality of interior annular faces that link to each other in proper order, and a plurality of the diameter of interior annular face is along being close to the terminal surface direction of inserting groove place tip increases in proper order, outer annular face with be used for with the bayonet joint is connected the inserting groove interior annular face phase-match, the assorted outer annular face with interior annular face all realizes the axial fixity through the joint structure and connects.

Preferably, the end of the pipe body is provided with the plug connector or the plug groove.

Preferably, the number of the outer annular surfaces and the number of the inner annular surfaces are both 3.

Preferably, the clamping structure includes a first annular groove, a second annular groove and a plurality of balls, the first annular groove is located on the outer annular surface, the second annular groove is located on the inner annular surface, the first annular groove and the second annular groove are clamped by the balls, a packing seal ring is fixedly arranged on a bottom surface in the insertion groove opposite to the insertion joint, an annular seal ring is fixedly arranged on the insertion joint, the second annular groove in the insertion groove, which abuts against the end surface of the end portion of the insertion groove, is an outer annular groove, the inner annular surface in the insertion groove, which is located between the end surface of the end portion of the insertion groove and the outer annular groove, is a sealing surface, and the annular seal ring is in sealing contact with the sealing surface.

Preferably, the pipe body is an arc pipe, the pipe port of the arc pipe is thickened at the projection part on the outer pipe wall of the arc pipe along the axis direction of the pipe port of the arc pipe, and the thickened part is in smooth transition with the outer pipe wall of the arc pipe.

The utility model also provides a high pressure activity elbow, including a plurality of consecutive connecting pipes, adjacent two the tip of connecting pipe butt joint is provided with bayonet joint and inserting groove respectively, the surface of bayonet joint includes a plurality of outer annular face that link to each other in proper order, and a plurality of the diameter of outer annular face is followed and is close to the terminal surface direction of bayonet joint place tip reduces in proper order, the internal surface of inserting groove includes a plurality of interior annular faces that link to each other in proper order, and a plurality of the diameter of interior annular face is followed and is close to the terminal surface direction of inserting groove place tip increases in proper order, outer annular face with be used for with the bayonet joint is connected the inserting groove interior annular face phase-match, the assorted outer annular face with interior annular face all realizes axial fixity through the joint structure and connects.

Preferably, the number of the connecting pipes is 3, wherein two of the connecting pipes are connected with each other and are arc pipes, the ports of the pipeline of the arc pipes are positioned along the axial direction of the pipe, the projection parts on the outer pipe wall of the arc pipes are thickened, and the thickened parts are in smooth transition with the outer pipe wall of the arc pipes.

The utility model also provides a conveying pipeline, include as above the high pressure activity elbow.

The utility model discloses for prior art gain following technological effect:

the utility model provides an elbow, high pressure activity elbow and pipeline, adopt the bayonet joint surface to include a plurality of outer annular surfaces that link to each other and the diameter reduces in proper order, the internal surface of inserting groove includes a plurality of inner ring faces that link to each other and the diameter increases in proper order, and assorted outer annular surface and inner ring face are equallyd divide and are do not realized the setting of axial fixity connection through the joint structure, the even distribution of joint force between the adjacent elbow is structural at a plurality of joints that are located on different diameters, thereby improved the distribution homogeneity of joint force on the cross section of bayonet joint or on the cross section of inserting groove, thereby the inside maximum stress of bayonet joint or bayonet joint has been reduced, thereby increase the life of elbow, and reduce its cost of maintenance.

Furthermore, the end part of the pipe body is provided with the plug connector or the plug groove, so that the maximum stress at the two ends of the elbow can be reduced, the service life of the elbow is further prolonged, and the maintenance cost of the elbow is reduced.

Furthermore, the number of the outer annular surfaces and the number of the inner annular surfaces are 3, the structure is simple, and the effect of reducing the maximum stress is obvious.

Furthermore, the clamping structure comprises a first annular groove, a second annular groove and a plurality of balls, the first annular groove and the second annular groove are clamped through the plurality of balls, the structure is simple, the connecting effect is good, and the rotary connection of the connecting elbow can be realized; the setting of packing sealing washer and ring packing can prevent in foreign object gets into connecting portion, prevents simultaneously that the emollient in the joint structure from flowing out.

Furthermore, the outer pipe wall of the pipe body is locally thickened, so that the time that the pipe body is thinned to be not up to standard in thickness due to liquid erosion can be prolonged, and the service life of the elbow is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an elbow according to a first embodiment;

fig. 2 is a schematic structural view of a high-pressure movable elbow provided in the second embodiment;

in the figure: 1-plug connector, 2-plug groove, 3-outer annular surface, 4-inner annular surface, 5-first annular groove, 6-ball, 7-packing seal ring, 8-annular seal ring, 9-thickening part, 10-steel ball plug, 11-wing nut, 12-slip and 13-second annular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing an elbow, high pressure activity elbow and conveying pipeline to solve the problem that prior art exists, can increase the life of elbow, and reduce its cost of maintenance.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Example one

The embodiment provides an elbow, as shown in fig. 1, in this embodiment, the elbow includes a pipe body, at least one end of the pipe body is fixedly provided with a plug 1 or a socket 2, an outer surface of the plug 1 includes a plurality of sequentially connected outer annular surfaces 3, diameters of the plurality of outer annular surfaces 3 decrease sequentially along a direction of an end surface close to the end where the plug 1 is located, an inner surface of the socket 2 includes a plurality of sequentially connected inner annular surfaces 4, diameters of the plurality of inner annular surfaces 4 increase sequentially along a direction of an end surface close to the end where the socket 2 is located, the outer annular surfaces 3 are matched with inner annular surfaces 4 of the socket 2 used for being connected with the plug 1, the matched outer annular surfaces 3 and inner annular surfaces 4 are both axially fixedly connected through a clamping structure, and two connected elbows can rotate, the outer surface of the plug 1 includes a plurality of sequentially connected outer annular surfaces 3 with decreasing diameters, the internal surface of inserting groove 2 includes a plurality of continuous and the diameter increases in proper order interior annular surface 4, and outer annular surface 3 of assorted and interior annular surface 4 equally divide do not realize the setting of axial fixed connection through the joint structure, the even distribution of joint force between the adjacent elbow is structural at a plurality of joints that are located on different diameters, thereby improved the distribution homogeneity of joint force on the cross section of bayonet joint 1 or on the cross section of inserting groove 2, thereby reduced the inside maximum stress of bayonet joint 1 or inserting groove 2, thereby increase the life of elbow, and reduce its cost of maintenance, the other end of elbow can be connected with other pipe connections through wing nut 11 and slips 12, or be connected through the wing nut 11 on screwed joint and other pipe.

The tip of body all is provided with bayonet joint 1 or inserting groove 2, and the body both ends can all be bayonet joint 1, also can all be inserting groove 2, or the one end of body is bayonet joint 1, and the other end is inserting groove 2, can reduce the maximum stress at elbow both ends, further improves the life of elbow, reduces its cost of maintenance.

The number of the outer annular surfaces 3 and the number of the inner annular surfaces 4 are 3, the structure is simple, the effect of reducing the maximum stress is obvious, and the maximum stress is reduced by about 35% according to software simulation and test measurement results.

The clamping structure comprises a first annular groove 5, a second annular groove 13 and a plurality of balls 6, the first annular groove 5 is positioned on an outer annular surface 3, the second annular groove 13 is positioned on an inner annular surface 4, the first annular groove 5 and the second annular groove 13 are clamped through the plurality of balls 6, a plurality of ball mounting holes are arranged on the outer side wall surface of the pipe body, each ball mounting hole is communicated with one second annular groove 13 and is used for mounting the balls 6, after the balls 6 are mounted, the ball mounting holes are sealed by using a steel ball plug 10, a packing sealing ring 7 is fixedly arranged on the bottom surface in the inserting groove 2 opposite to the inserting head 1, an annular sealing ring 8 is fixedly arranged on the inserting head 1, the second annular groove 13 in the inserting groove 2, which is close to the end surface of the end part where the inserting groove 2 is positioned, is an outer annular groove, the inner annular surface 4, which is positioned between the end surface of the end part where the inserting groove 2 is positioned and the, the annular sealing ring 8 is used for being in sealing contact with a sealing surface, the clamping structure comprises a first annular groove 5, a second annular groove 13 and a plurality of balls 6, the first annular groove 5 and the second annular groove 13 are clamped through the plurality of balls 6, the structure is simple, the connecting effect is good, and the rotary connection of the connecting elbow can be realized; the setting of packing sealing washer 7 and ring packing 8 can prevent in foreign object gets into connecting portion, prevents simultaneously that the emollient in the joint structure 5 from flowing out.

The body is the arc pipe, and the projection position of arc pipe pipeline port on the outer pipe wall of arc pipe all carries out the thickening along its axis direction, and thickening position 9 and the outer pipe wall rounding off of arc pipe can prolong the body and erode the time that the attenuation is not up to standard to thickness because of liquid to increase the life of elbow.

Example two

The embodiment provides a high-pressure movable elbow, as shown in fig. 1-2, in this embodiment, the high-pressure movable elbow includes a plurality of sequentially connected connecting pipes, the butt ends of two adjacent connecting pipes are respectively provided with a plug 1 and a plug groove 2, the outer surface of the plug 1 includes a plurality of sequentially connected outer annular surfaces 3, the diameters of the plurality of outer annular surfaces 3 decrease sequentially along the direction of the end surface close to the end where the plug 1 is located, the inner surface of the plug groove 2 includes a plurality of sequentially connected inner annular surfaces 4, the diameters of the plurality of inner annular surfaces 4 increase sequentially along the direction of the end surface close to the end where the plug groove 2 is located, the outer annular surfaces 3 are matched with the inner annular surfaces 4 of the plug groove 2 used for connecting with the plug 1, the matched outer annular surfaces 3 and the inner annular surfaces 4 are both axially fixedly connected through a clamping structure, and the two connected connecting pipes can rotate, the outer surface of the plug 1 comprises a plurality of outer annular surfaces 3 which are connected and the diameters of which are reduced in sequence, the inner surface of the plug groove 2 comprises a plurality of inner annular surfaces 4 which are connected and the diameters of which are increased in sequence, the matched outer annular surface 3 and the inner annular surface 4 are respectively and fixedly connected in the axial direction through a clamping structure, the connecting force between the adjacent elbows is uniformly distributed on the clamping structures with different diameters, thereby improving the distribution uniformity of the connecting force on the cross section of the plug 1 or the cross section of the plug groove 2, thereby reducing the maximum stress inside the plug connector 1 or the plug groove 2, prolonging the service life of the elbow, and the maintenance cost is reduced, and the two ends of the high-pressure movable elbow can be connected with other pipelines through the wing nut 11 and the slips 12, or connected with the wing nut 11 on other pipelines through the thread head.

The clamping structure comprises a first annular groove 5, a second annular groove 13 and a plurality of balls 6, the first annular groove 5 is positioned on an outer annular surface 3, the second annular groove 13 is positioned on an inner annular surface 4, the first annular groove 5 and the second annular groove 13 are clamped through the plurality of balls 6, a plurality of ball mounting holes are arranged on the outer side wall surface of the connecting pipe, each ball mounting hole is communicated with one second annular groove 13 and is used for mounting the balls 6, after the balls 6 are mounted, the ball mounting holes are sealed by using a steel ball plug 10, a packing sealing ring 7 is fixedly arranged on the bottom surface in the inserting groove 2 opposite to the inserting head 1, an annular sealing ring 8 is fixedly arranged on the inserting head 1, the second annular groove 13 in the inserting groove 2, which is close to the end surface of the end part where the inserting groove 2 is positioned, is an outer annular groove, the inner annular surface 4, which is positioned between the end surface of the end part where the inserting groove 2 is positioned and the, the annular sealing ring 8 is used for being in sealing contact with a sealing surface, the clamping structure comprises a first annular groove 5, a second annular groove 13 and a plurality of balls 6, the first annular groove 5 and the second annular groove 13 are clamped through the plurality of balls 6, the structure is simple, the connecting effect is good, and the rotary connection of the connecting elbow can be realized; the setting of packing sealing washer 7 and ring packing 8 can prevent in foreign object gets into connecting portion, prevents simultaneously that the emollient in the joint structure 5 from flowing out.

The quantity of connecting pipe is 3, and wherein two continuous connecting pipes are the arc, and arc pipeline port is in along its axis direction projection position on the outer pipe wall of arc all carries out the thickening processing, and thickening position 9 and the outer pipe wall rounding off of arc, can prolong the body and become thin to the time that thickness is not up to standard because of liquid erosion to increase the life of elbow.

EXAMPLE III

The embodiment provides a conveying pipeline, as shown in fig. 1-2, in this embodiment, the conveying pipeline includes the high-pressure movable elbow in embodiment two, adopt 1 outer surface of bayonet joint to include a plurality of outer annular surfaces 3 that link to each other and the diameter reduces in proper order, the internal surface of inserting groove 2 includes a plurality of inner annular surfaces 4 that link to each other and the diameter increases in proper order, and assorted outer annular surface 3 and inner annular surface 4 equally divide and realize the setting of axial fixity connection through the joint structure respectively, the even distribution of joint force between the adjacent elbow is on a plurality of joint structures that are located different diameters, thereby the distribution uniformity of joint force on the cross section of bayonet joint 1 or on the cross section of inserting groove 2 has been improved, thereby the inside maximum stress of bayonet joint 1 or inserting groove 2 has been reduced, thereby increase the life of elbow, and reduce its cost of maintenance.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. An elbow, which is characterized in that: the method comprises the following steps: the pipe body, the fixed bayonet joint or inserting groove that is provided with of at least one end of body, the surface of bayonet joint includes a plurality of outer annular surface that links to each other in proper order, and is a plurality of the diameter of outer annular surface reduces along being close to the terminal surface direction of bayonet joint place tip in proper order, the internal surface of inserting groove includes a plurality of interior annular surface that link to each other in proper order, and is a plurality of the diameter of interior annular surface increases along being close to the terminal surface direction of inserting groove place tip in proper order, outer annular surface with be used for with the bayonet joint be connected the inserting groove interior annular surface phase-match, the assorted outer annular surface with interior annular surface all realizes axial fixed connection through joint structure.

2. The elbow according to claim 1, wherein: the end part of the pipe body is provided with the plug connector or the plug groove.

3. The elbow according to claim 1, wherein: the number of the outer annular surfaces and the number of the inner annular surfaces are both 3.

4. The elbow according to claim 3, wherein: the clamping structure comprises a first annular groove, a second annular groove and a plurality of balls, the first annular groove is located on the outer annular surface, the second annular groove is located on the inner annular surface, the first annular groove and the second annular groove are clamped through the balls, a packing seal ring is fixedly arranged on the bottom surface, opposite to the plug, in the plug groove, a ring seal ring is fixedly arranged on the plug, the second annular groove, which abuts against the end surface of the end portion of the plug groove, in the plug groove, is an outer annular groove, the end surface of the end portion of the plug groove, which is located on the plug groove, and the inner annular surface, which is located between the end portion of the plug groove and the outer annular groove, are sealing surfaces, and the ring seal ring is in sealing contact with the sealing surfaces.

5. The elbow according to claim 1, wherein: the pipe body is an arc pipe, the projection parts of the pipeline ports of the arc pipe on the outer pipe wall of the arc pipe are thickened along the axial direction of the pipe body, and the thickened parts are in smooth transition with the outer pipe wall of the arc pipe.

6. A high-pressure movable elbow is characterized in that: the connecting pipe comprises a plurality of sequentially connected connecting pipes, the end parts of two adjacent connecting pipes which are in butt joint are respectively provided with a plug connector and a plug groove, the outer surface of the plug connector comprises a plurality of sequentially connected outer annular surfaces, the diameter of each outer annular surface is reduced in sequence along the direction of the end face close to the end part where the plug connector is located, the inner surface of the plug groove comprises a plurality of sequentially connected inner annular surfaces, the diameter of each inner annular surface is increased in sequence along the direction of the end face close to the end part where the plug groove is located, each outer annular surface is matched with the inner annular surface of the plug groove, and the outer annular surface and the inner annular surface are matched in a uniform mode and are respectively connected in an axial fixed mode through a clamping structure.

7. The high-pressure movable elbow according to claim 6, wherein: the number of the outer annular surfaces and the number of the inner annular surfaces are both 3.

8. The high-pressure movable elbow according to claim 7, wherein: the clamping structure comprises a first annular groove, a second annular groove and a plurality of balls, the first annular groove is located on the outer annular surface, the second annular groove is located on the inner annular surface, the first annular groove and the second annular groove are clamped through the balls, a packing seal ring is fixedly arranged on the bottom surface, opposite to the plug, in the plug groove, a ring seal ring is fixedly arranged on the plug, the second annular groove, which abuts against the end surface of the end portion of the plug groove, in the plug groove, is an outer annular groove, the end surface of the end portion of the plug groove, which is located on the plug groove, and the inner annular surface, which is located between the end portion of the plug groove and the outer annular groove, are sealing surfaces, and the ring seal ring is in sealing contact with the sealing surfaces.

9. The high-pressure movable elbow according to claim 6, wherein: the quantity of connecting pipe is 3, and wherein two link to each other the connecting pipe is the arc pipe, the arc pipe pipeline port is in along its axis direction projection position on the outer pipe wall of arc pipe all carries out thickening, and thickening position with outer pipe wall rounding off of arc pipe.

10. A transfer line, characterized by: comprising a high-pressure movable elbow according to any one of claims 6 to 9.