CN216923524U

CN216923524U - Connecting assembly for pipeline

Info

Publication number: CN216923524U
Application number: CN202220132628.7U
Authority: CN
Inventors: 黄蓉; 余锐平; 周性聪; 罗成辉
Original assignee: Foshan Henglitai Machinery Co Ltd
Current assignee: Foshan Henglitai Machinery Co Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-07-08
Anticipated expiration: 2032-01-18

Abstract

The utility model discloses a connecting assembly for a pipeline, which comprises a connector body and a connecting sleeve, wherein the connecting sleeve is provided with a first end and a second end, and one end of the connector body is penetrated in the first end and is in sealing fit with the first end; the other end of the joint body forms a connecting end; the second end is sleeved at the end part of the external pipeline; the inner wall of the second end, which is close to the first end, is provided with an abutting surface which is matched with a step of an external pipeline; the end of the second end, which is far away from the first end, is provided with an extension part which extends along the axial direction; the extension is adapted to engage an outer surface of an outer pipe. According to the connecting component for the pipeline, the extension part of the second end can directly cover the surface of the pipeline and is far away from the abutting surface abutting against the step of the pipeline, so that the stress transfer of the pipeline is carried out.

Description

Connecting assembly for pipeline

Technical Field

The utility model relates to the technical field of pipeline connection, in particular to a connecting assembly for pipelines.

Background

At present, the existing technical scheme of steel pipe forming is to form a step at the tail of a steel pipe for fixing with an external nut in order to facilitate pipe connection by extrusion forming of a forming machine. However, this type of connection has the following drawbacks: 1. a small round angle is generated at the forming step, and the stress at the position is concentrated; 2. the contact between the nut and the round angle is not subjected to round angle transition, and the pointed nut can be directly pressed at the round angle; 3. a gap exists between the steel pipe and the nut, and when the steel pipe is impacted, impact force acts on the round angle through a lever-like principle.

In the steel pipe work engineering, the three points can lead to the generation of great stress at the round corner of the steel pipe for a long time. Especially, in the occasion with larger vibration, the stress at the round corner of the steel pipe is larger, and the round corner is easy to crack, so that the steel pipe and the oil leakage cannot be used.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a connecting component for a pipeline, which can directly cover the surface of the pipeline by an extending part at a second end and carry out stress transfer on the pipeline far from an abutting surface abutting against a pipeline step.

The purpose of the utility model is realized by adopting the following technical scheme:

a connecting assembly for a pipeline comprises a joint body and a connecting sleeve, wherein the connecting sleeve is provided with a first end and a second end, and one end of the joint body is penetrated in the first end and is in sealing fit with the first end; the other end of the joint body forms a connecting end; the second end is sleeved at the end part of the external pipeline;

the inner wall of the second end, which is close to the first end, is provided with an abutting surface which is matched with a step of an external pipeline; the end of the second end, which is far away from the first end, is provided with an extension part which extends along the axial direction; the extension is adapted to engage an outer surface of an outer pipe.

Further, the abutting surface is an inclined surface.

Further, a seal ring is clamped between the end of the joint body and the first end.

Further, the abutting surface is matched with a step of the pipeline and then protrudes out of the step; the sealing ring is clamped between the part of the abutting surface protruding out of the step and the end part of the joint body.

Further, internal threads are arranged in the first end and the second end.

Further, the outer surface of the connecting end is provided with external threads.

Compared with the prior art, the utility model has the beneficial effects that: when carrying out the assembly of steel pipe and joint body, the one end of joint body can the cross-under at the first end of adapter sleeve, and the second end of adapter sleeve can the suit outside the pipeline, the step of the tip on the pipeline can cooperate with the butt face butt of second end, and the extension of keeping away from the butt face then can directly cover in the surface of pipeline, so, the step of pipeline tip and the joining point of butt face, can keep away from the linking department of pipeline surface and adapter sleeve extension, shift the main impetus of pipeline to extension department, and keep away from pipeline step and butt face, effectively avoid the stress concentration of the step department of pipeline, prolong the life of pipeline greatly.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 10. a connector body; 11. a connecting end; 20. connecting sleeves; 21. an abutting surface; 22. an extension portion; 30. a gasket; 40. a pipeline.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and the detailed description below:

in the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

A coupling assembly for pipes as shown in fig. 1 comprises a coupling body 10 and a coupling sleeve 20, wherein the coupling sleeve 20 has a first end and a second end, one end of the coupling body 10 is inserted into the first end, the portion of the coupling body 10 inserted into the first end of the coupling sleeve 20 can be in sealing fit with the inner wall of the coupling sleeve 20, the other end of the coupling body 10 is formed as a connecting end 11, and the second end of the coupling sleeve 20 can be sleeved on the end of an external pipe 40.

Specifically, an abutting surface 21 may be provided on the inner wall of the second end of the connecting sleeve 20, the abutting surface 21 is provided on the inner wall of the second end close to the first end, and the abutting surface 21 is matched with the step of the outer pipe 40. In addition, at the second end of the connection sleeve 20, the end portion away from the first end has an extension portion 22, the extension portion 22 extends in the axial direction, and the extension portion 22 is used for being attached to the outer surface of the outer pipe 40.

On the basis of the structure, when the connecting assembly for the pipeline 40 is used, when the steel pipe is assembled with the joint body 10, one end of the joint body 10 can be connected to the first end of the connecting sleeve 20 in a penetrating manner, the second end of the connecting sleeve 20 can be sleeved outside the pipeline 40, the step at the end part of the pipeline 40 can be in butt fit with the butt surface 21 of the second end, and the extension part 22 far away from the butt surface 21 can directly cover the outer surface of the pipeline 40.

Therefore, the joint point of the step of the end of the pipe 40 and the abutting surface 21 can be far away from the joint of the outer surface of the pipe 40 and the extension 22 of the connecting sleeve 20, the main acting point of the pipe 40 is transferred to the extension 22, and the step of the pipe 40 and the abutting surface 21 are far away, so that the stress concentration at the step of the pipe 40 is effectively avoided, and the service life of the pipe 40 is greatly prolonged.

After being assembled, the connection end 11 of the connector body 10 can be directly connected to an external device or a pipe 40, and of course, the connector body 10 can be a screw joint or a plug joint in the prior art.

Further, the abutting surface 21 is an inclined surface which can be matched with a step corner of the pipeline 40, the assembly structure is more stable, the inclined surface can be subjected to stress decomposition, stress concentration is reduced, and therefore the effect of preventing stress concentration is better.

Further, a sealing ring can be clamped between the end portion and the first end of the joint body 10, after the joint body 10 and the end portion of the pipeline 40 are assembled through the connecting sleeve 20, the sealing gasket 30 can form sealing among the joint, the end portion of the pipeline 40 and the connecting sleeve 20, and sealing performance is better after assembly.

More specifically, the abutting surface 21 is matched with the step of the pipe 40 and then protrudes out of the step, the sealing ring is clamped between the portion, protruding out of the step, of the abutting surface and the end portion of the joint body 10, namely the sealing ring can be clamped between the step of the pipe 40 and the abutting surface 21, and the sealing gasket 30 has certain flexibility, so that stress buffering can be performed when stress is applied, extrusion deformation can be performed, the sealing effect is good, and meanwhile, the stress of the step can be further buffered.

Further, internal threads are formed in the first end and the second end, so that the connection sleeve 20 can be conveniently assembled with the pipeline 40 and the connector body 10 in a threaded manner. Of course, the connecting sleeve 20 can be directly selected as a nut structure, the nut structure is lengthened during processing, and other related structures are correspondingly processed inside. In addition, the connecting sleeve 20 can also be realized by directly selecting an annular structure, and an internal thread structure processed inside the annular structure can also be realized.

Further, the outer surface of the connection end 11 is provided with an external thread, which facilitates the direct screw-fitting of the coupling body 10 with an external device or a pipe 40.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. A connecting assembly for a pipeline is characterized by comprising a connector body and a connecting sleeve, wherein the connecting sleeve is provided with a first end and a second end, and one end of the connector body is penetrated in the first end and is in sealing fit with the first end; the other end of the joint body forms a connecting end; the second end is sleeved at the end part of the external pipeline;

2. A connection assembly for pipes according to claim 1 wherein the abutment surfaces are ramped.

3. A coupling assembly for pipes according to claim 1 wherein a sealing ring is clamped between the end of the fitting body and the first end.

4. A connection assembly for pipes according to claim 3, wherein the abutment surface projects beyond the step of the pipe after mating with the step; the sealing ring is clamped between the part of the abutting surface protruding out of the step and the end part of the joint body.

5. A connection assembly for pipes according to any of claims 1 to 4 wherein the first and second ends are internally threaded.

6. A connection assembly for pipes according to any of claims 1 to 4 wherein the outer surface of the connection end is externally threaded.