CN217927635U

CN217927635U - Pipeline joint structure

Info

Publication number: CN217927635U
Application number: CN202221369258.5U
Authority: CN
Inventors: 李凯; 沈红光; 王健; 于百洪
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-11-29
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a pipe joint structure, this pipe joint structure include first pipeline, second pipeline, pipe connection spare and seal assembly. One end of the first pipeline is axially inserted into the pipeline connecting piece and can be axially abutted against the pipeline connecting piece, and one end of the second pipeline is in threaded connection with the pipeline connecting piece and can be axially abutted against the first pipeline; the seal assembly comprises a first seal member and a second seal member, the first seal member is used for sealing the pipeline connecting member and the first pipeline, the second seal member is used for sealing the pipeline connecting member and the second pipeline, and the first seal member and the second seal member are respectively positioned at two ends of the pipeline connecting member along the axial direction. This pipeline joint structure, simple structure, spare part is small in quantity, and the assembly degree of difficulty is low, has injectd first pipeline and second pipeline along the axial and has assembled in conduit coupling's position, and can prevent to be located the rust of the first pipeline of conduit coupling and partial second pipeline of part, can prevent that conduit coupling's inside wall from rustting.

Description

Pipeline joint structure

Technical Field

The utility model relates to a pipeline transportation technical field especially relates to a pipe joint design.

Background

The pipe joint is a connecting tool between pipelines and is a connecting point which can be disassembled and assembled between the pipelines. Plays an indispensable important role in the pipe fitting, which is one of the two main components of the hydraulic pipe.

A pipeline joint structure at present mainly comprises a first joint and a second joint, wherein an oil seal is arranged between the first joint and the second joint, an axial limiting connector is further arranged between the first joint and the second joint, a left section of the connector is fixedly sleeved on the first joint, a first sealing ring is arranged between the connector and the first joint, a right section of the connector can be sleeved on the second joint in a relatively rotating manner, a second sealing ring is arranged between the connector and the second joint, the left end of the second joint is provided with an annular groove, a clamp spring is arranged in the annular groove, the clamp spring is matched with the clamping groove to limit the right movement of the second joint, the pipeline joint structure can realize connection of the first joint and the second joint, the relative positions of the first joint and the second joint can be limited along the axial direction, and the joint of the first joint and the second joint can be sealed to prevent rusting.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipe joint structure to solve the problem that pipe joint structure among the prior art's structure is complicated, spare part is in large quantity and difficult assembly.

To achieve the purpose, the utility model adopts the following technical proposal:

a pipe joint construction, comprising:

the pipeline connecting device comprises a first pipeline, a second pipeline and a pipeline connecting piece, wherein one end of the first pipeline is axially inserted into the pipeline connecting piece and can be axially abutted against the pipeline connecting piece, and one end of the second pipeline is in threaded connection with the pipeline connecting piece and can be axially abutted against the first pipeline;

and the sealing assembly comprises a first sealing element and a second sealing element, the first sealing element is used for sealing the pipeline connecting piece and the first pipeline, the second sealing element is used for sealing the pipeline connecting piece and the second pipeline, and the first sealing element and the second sealing element are respectively positioned at two ends of the pipeline connecting piece along the axial direction.

Preferably, the pipeline connecting piece is provided with a threaded hole and a through hole which are communicated, a limiting surface is formed at the joint of the threaded hole and the through hole, the first pipeline can be abutted against the limiting surface, and the second pipeline is in threaded connection with the threaded hole.

Preferably, the diameter of the threaded hole is larger than the diameter of the through hole.

Preferably, the first pipeline comprises a pipeline body and a limiting structure fixedly arranged on the outer peripheral surface of the pipeline body, and the limiting structure can be abutted to the limiting surface along the axial direction.

Preferably, the pipeline body and the limiting structure are integrally formed.

Preferably, a conical pipeline head is arranged at one end, close to the second pipeline, of the first pipeline, a conical hole is arranged at one end, close to the first pipeline, of the second pipeline, and the pipeline head can be inserted into the conical hole and abutted against the hole wall of the conical hole.

Preferably, one of the pipe connecting member and the first pipe is provided with a first groove, and the first sealing member is partially embedded in the first groove.

Preferably, one of the pipe connecting member and the second pipe is provided with a second groove, and the second sealing member is partially embedded in the second groove.

Preferably, the first seal and the second seal are both O-rings.

Preferably, the first pipeline is a high-pressure oil pipe, and the second pipeline is a high-pressure joint.

The utility model has the advantages that:

an object of the utility model is to provide a pipe joint structure, this pipe joint structure include first pipeline, second pipeline, pipe connection spare and seal assembly. The pipeline joint structure comprises a pipeline connecting piece, a first pipeline, a second pipeline and a pipeline joint, wherein one end of the first pipeline is axially inserted into the pipeline connecting piece in a plugging mode and can be axially abutted against the pipeline connecting piece, one end of the second pipeline is in threaded connection with the pipeline connecting piece and can be axially abutted against the first pipeline, it can be understood that when the second pipeline is screwed and axially abutted against the first pipeline, axial force can be applied to the first pipeline by the second pipeline, so that the first pipeline is axially abutted against the pipeline connecting piece, and when the first pipeline is axially abutted against the pipeline connecting piece, the second pipeline is abutted against the first pipeline, so that the positions of the first pipeline and the second pipeline which are assembled on the pipeline connecting piece are axially limited; secondly, set up first sealing member and second sealing member respectively along axial both ends at pipe connection spare, first sealing member is used for sealing up the clearance between pipe connection spare and the first pipeline, the second sealing member is used for sealing up the clearance between pipe connection spare and the second pipeline, in order to avoid moisture to enter into pipe connection spare by the clearance between pipe connection spare and the first pipeline and/or the clearance between pipe connection spare and the second pipeline, the rust of partial first pipeline and partial second pipeline that has effectively prevented to be located pipe connection spare, the inside wall that has also prevented pipe connection spare is rusted. This pipeline adapter, simple structure has reduced the quantity of spare part, has reduceed the assembly degree of difficulty, and has prevented effectively that the partial first pipeline that is located the pipe connection spare and partial second pipeline from rustting, has prevented that the inside wall of pipe connection spare from rustting.

Drawings

Fig. 1 is a schematic structural view of a pipe joint structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a pipe connecting piece of a pipe joint structure according to an embodiment of the present invention.

In the figure:

1. a first conduit; 11. a pipe body; 111. a pipe head; 12. a limiting structure;

2. a second conduit; 21. a tapered hole;

3. a pipe connection; 31. a threaded hole; 32. a through hole; 33. a limiting surface; 34. a first groove;

41. a first seal member; 42. a second seal.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The utility model provides a pipe joint structure, as shown in figure 1, this pipe joint structure includes first pipeline 1, second pipeline 2, pipe connection 3 and seal assembly. One end of the first pipeline 1 is axially inserted into the pipeline connecting piece 3 and can be axially abutted against the pipeline connecting piece 3, and one end of the second pipeline 2 is in threaded connection with the pipeline connecting piece 3 and can be axially abutted against the first pipeline 1; the sealing assembly includes a first sealing member 41 and a second sealing member 42, the first sealing member 41 is used for sealing the pipe connection member 3 and the first pipe 1, the second sealing member 42 is used for sealing the pipe connection member 3 and the second pipe 2, and the first sealing member 41 and the second sealing member 42 are respectively positioned at both ends of the pipe connection member 3 in the axial direction.

As shown in fig. 1, in the pipe joint structure, one end of the first pipe 1 is axially inserted into the pipe connector 3 and can be axially abutted against the pipe connector 3, and one end of the second pipe 2 is in threaded connection with the pipe connector 3 and can be axially abutted against the first pipe 1, it can be understood that, in the process of screwing the second pipe 2 to be axially abutted against the first pipe 1, the second pipe 2 applies an axial force to the first pipe 1, so that the first pipe 1 is axially abutted against the pipe connector 3, and when the first pipe 1 is axially abutted against the pipe connector 3, the second pipe 2 is abutted against the first pipe 1, so that the positions of the first pipe 1 and the second pipe 2 assembled to the pipe connector 3 are axially limited; secondly, through set up first sealing member 41 and second sealing member 42 at pipe connection 3 along axial both ends respectively, first sealing member 41 is used for sealing up the clearance between pipe connection 3 and the first pipeline 1, second sealing member 42 is used for sealing up the clearance between pipe connection 3 and the second pipeline 2, in order to avoid moisture to enter into pipe connection 3 by the clearance between pipe connection 3 and the first pipeline 1 and/or the clearance between pipe connection 3 and the second pipeline 2, it rusts to have effectively prevented to be located some first pipeline 1 and some second pipeline 2 of pipe connection 3, the inside wall of pipe connection 3 has also been prevented from rusting. This pipeline adapter, simple structure has reduced the quantity of spare part, has reduceed the assembly degree of difficulty, and has prevented effectively that the partial first pipeline 1 that is located pipe connection 3 and partial second pipeline 2 from rustting, has prevented that pipe connection 3's inside wall from rustting.

As shown in fig. 1 and 2, the pipe connector 3 is provided with a threaded hole 31 and a through hole 32 which are communicated with each other, a limiting surface 33 is formed at the joint of the threaded hole 31 and the through hole 32, the first pipe 1 can be abutted against the limiting surface 33, and the second pipe 2 is in threaded connection with the threaded hole 31. This is provided to achieve the definition of the position in the axial direction where the first pipe 1 and the second pipe 2 are fitted to the pipe joint 3.

Specifically, as shown in fig. 1 and 2, the hole diameter of the screw hole 31 is larger than the hole diameter of the through hole 32. Specifically, the first pipeline 1 is inserted into the through hole 32 through the threaded hole 31, wherein a part of the first pipeline 1 abuts against the limiting surface 33, a part of the first pipeline 1 is inserted into the through hole 32, and the rest of the first pipeline 1 extends out of the through hole 32.

Specifically, as shown in fig. 1, the first pipe 1 includes a pipe body 11 and a limiting structure 12 fixedly disposed on an outer peripheral surface of the pipe body 11, and the limiting structure 12 can abut against a limiting surface 33 in an axial direction. It will be appreciated that the portion of the first conduit 1 in which the stop formation 12 is located within the threaded bore 31.

Further specifically, in the present embodiment, the pipe body 11 and the stopper structure 12 are integrally molded. That is, the position limiting structure 12 is integrally formed on the outer peripheral surface of the pipe body 11. So set up, can further reduce the quantity of spare part, reduce the assembly degree of difficulty. As an alternative, the pipe body 11 and the limiting structure 12 are formed separately, and the limiting structure 12 is fixedly sleeved on the pipe structure.

As shown in fig. 1, a tapered pipe head 111 is disposed at an end of the first pipe 1 close to the second pipe 2, a tapered hole 21 is disposed at an end of the second pipe 2 close to the first pipe 1, and the pipe head 111 can be inserted into the tapered hole 21 and abut against a hole wall of the tapered hole 21. So set up, on the basis of guaranteeing that first pipeline 1 and second pipeline 2 can support tightly, realize radially injecing the relative position of first pipeline 1 and second pipeline 2 for the central axis of first pipeline 1 and the central axis collineation of second pipeline 2 are convenient for assemble first pipeline 1 and second pipeline 2 in plumbing connections piece 3.

As shown in fig. 1 and 2, one of the pipe connector 3 and the first pipe 1 is provided with a first groove 34, and the first sealing member 41 is partially fitted in the first groove 34. Exemplarily, taking the first groove 34 as an example and being disposed in the pipe connecting member 3, the first sealing member 41 is partially embedded in the first groove 34 by disposing the first sealing member 41, that is, the first sealing member 41 is interference-assembled in the first groove 34, so that each inner sidewall of the first groove 34 can be in close contact with the first sealing member 41, and the portion of the first sealing member 41 located outside the first groove 34 can be in close contact with the outer peripheral surface of the first pipe 1, thereby preventing moisture from entering the pipe connecting member 3 through the gap between the first pipe 1 and the pipe connecting member 3, and also preventing moisture from permeating the pipe connecting member 3 through the first groove 34. As an alternative, the first groove 34 is provided on the outer circumferential surface of the first pipe 1.

Specifically, in the present embodiment, the first seal 41 is an O-ring seal, and the first groove 34 is an annular groove.

Wherein, as shown in fig. 1, one of the pipe joint 3 and the second pipe 2 is provided with a second groove in which the second sealing member 42 is partially fitted. Exemplarily, the second groove is arranged on the second pipeline 2, the second groove is embedded in the second sealing element 42 by arranging the second sealing element 42, that is, the second sealing element 42 is assembled in the second groove in an interference manner, so that each inner side wall of the second groove is tightly contacted with the second sealing element 42, and the part of the second sealing element 42, which is positioned outside the second groove, can be tightly contacted with the inner side wall of the pipeline connecting piece 3, thereby preventing moisture from entering the pipeline connecting piece 3 through a gap between the second pipeline 2 and the pipeline connecting piece 3, and also preventing the moisture from permeating the pipeline connecting piece 3 through the second groove. As an alternative, the second groove is provided in the inner side wall of the pipe connection 3.

Specifically, in the present embodiment, the second seal 42 is an O-ring seal and the second groove is an annular groove.

Preferably, the inner side wall of the pipe connection member 3 is further provided with a third groove, and a portion of the second sealing member 42 located outside the second groove is located in the third groove and is in close contact with the inner side wall of the third groove. Thereby further avoiding moisture from entering the pipe connection 3 through the gap between the second pipe 2 and the pipe connection 3. Preferably, the third groove is an annular groove, and the cross section of the third groove is arc-shaped.

In this embodiment, the first pipeline 1 is a high-pressure oil pipe, and the second pipeline 2 is a high-pressure joint. Thereby realizing the axial limitation of the position of the high-pressure oil pipe and the high-pressure joint assembled on the pipeline connecting piece 3; and effectively prevented that the partial high pressure fuel pipe that is located in the pipe connection spare 3 and partial high pressure joint from rustting, also prevented that the inside wall of pipe connection spare 3 from rustting, simple structure has reduced the quantity of spare part, and the assembly degree of difficulty is low.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipe joint structure, comprising:

the pipeline connecting device comprises a first pipeline (1), a second pipeline (2) and a pipeline connecting piece (3), wherein one end of the first pipeline (1) is axially inserted into the pipeline connecting piece (3) and can be axially abutted against the pipeline connecting piece (3), and one end of the second pipeline (2) is in threaded connection with the pipeline connecting piece (3) and can be axially abutted against the first pipeline (1);

a seal assembly comprising a first seal (41) and a second seal (42), the first seal (41) being for sealing the pipe connection (3) and the first pipe (1), the second seal (42) being for sealing the pipe connection (3) and the second pipe (2), and the first seal (41) and the second seal (42) being located at respective ends of the pipe connection (3) in an axial direction.

2. The pipe joint structure according to claim 1, wherein the pipe connecting piece (3) is provided with a threaded hole (31) and a through hole (32) which are communicated with each other, a joint of the threaded hole (31) and the through hole (32) forms a limiting surface (33), the first pipe (1) can abut against the limiting surface (33), and the second pipe (2) is in threaded connection with the threaded hole (31).

3. The piping joint structure according to claim 2, characterized in that the diameter of the threaded hole (31) is larger than the diameter of the through hole (32).

4. The pipe joint structure according to claim 2, wherein the first pipe (1) comprises a pipe body (11) and a limiting structure (12) fixedly arranged on the outer circumferential surface of the pipe body (11), and the limiting structure (12) can axially abut against the limiting surface (33).

5. The piping joint structure according to claim 4, wherein the piping body (11) and the stopper structure (12) are integrally formed.

6. The pipe joint structure according to any one of claims 1 to 5, wherein a tapered pipe head (111) is disposed at an end of the first pipe (1) close to the second pipe (2), a tapered hole (21) is disposed at an end of the second pipe (2) close to the first pipe (1), and the pipe head (111) can be inserted into the tapered hole (21) and tightly abuts against a wall of the tapered hole (21).

7. Pipe joint construction according to any one of claims 1-5, c h a r a c t e r i z e d in that one of the pipe connection element (3) and the first pipe (1) is provided with a first groove (34), and the first sealing element (41) is partly embedded in the first groove (34).

8. The pipe joint construction according to any one of claims 1-5, characterized in that one of the pipe connection piece (3) and the second pipe (2) is provided with a second groove, in which the second sealing member (42) is partially embedded.

9. The pipe joint construction according to any one of claims 1-5, characterized in that the first sealing element (41) and the second sealing element (42) are both O-rings.

10. The pipe joint construction according to any of claims 1-5, characterized in that the first pipe (1) is a high pressure oil pipe and the second pipe (2) is a high pressure joint.