CN216923518U

CN216923518U - High-sealing-performance high-pressure oil pipe joint

Info

Publication number: CN216923518U
Application number: CN202220518611.5U
Authority: CN
Inventors: 闫先磊; 何燚
Original assignee: Ningbo Senli Hydraulic Equipment Co ltd
Current assignee: Ningbo Senli Hydraulic Equipment Co ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-07-08
Anticipated expiration: 2032-03-09

Abstract

The utility model relates to the technical field of high-pressure oil pipes, and discloses a high-sealing-performance high-pressure oil pipe joint which comprises a first pipe joint and a second pipe joint arranged at one end of the first pipe joint, wherein a first outer sleeve is sleeved at the joint of the first pipe joint and the second pipe joint, a second outer sleeve is arranged at the lower end of the first outer sleeve, the second outer sleeve is inserted on the second pipe joint in a penetrating manner, an external thread sleeve is fixedly arranged at the lower end of the first pipe joint, a first rubber sleeve is fixedly arranged at the lower end of the external thread sleeve, an internal thread connecting pipe is fixedly arranged at the lower end of the first rubber sleeve, the joint of the first pipe joint and the second pipe joint is arranged in the first outer sleeve, the strength of the joint is increased, the looseness of the joint caused by vibration is reduced, meanwhile, the sealing part can be prevented from being exposed outdoors, and the sealing performance of the high-sealing-performance high-pressure oil pipe joint is improved, the use effect is good.

Description

High-sealing-performance high-pressure oil pipe joint

Technical Field

The utility model relates to the technical field of high-pressure oil pipes, in particular to a high-tightness high-pressure oil pipe joint.

Background

The high-pressure oil pipe is a component of a high-pressure oil circuit, the oil pipe is required to bear certain oil pressure, certain fatigue strength is achieved, the sealing requirement of a pipeline is guaranteed, and the vehicle high-pressure oil pipe mainly appears in a high-pressure injection diesel engine and a high-pressure injection gasoline direct injection engine and can bear the oil pressure required by the engine in the operation process.

The two groups of high-pressure oil pipes are in threaded connection through the oil pipe joints, however, the oil pipes can generate large vibration when in work, the sealing performance of the oil pipes cannot be met only by using the threaded connection of pipelines, the threaded connection part is easy to loosen, certain cracks can be generated on the loosened oil pipes, and oil paths in the oil pipes are easy to leak, so that the use is influenced; therefore, the existing requirements are not met, and a high-tightness high-pressure oil pipe joint is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-tightness high-pressure oil pipe joint which has the advantages of good tightness and convenient vibration reduction, and solves the problems that the tightness of the high-pressure oil pipe joint is not enough to be met only by using threaded connection of pipelines, the threaded connection part is easy to loosen, the loosened oil pipe generates certain cracks, and the oil way in the oil pipe is easy to leak.

The utility model provides the following technical scheme: the utility model provides a high leakproofness high pressure fuel pipe connects, includes first pipeline joint and installs the second pipeline joint in first pipeline joint one end, first outer tube has been cup jointed with the junction that the second pipeline connects, the lower extreme of first outer tube is provided with the second outer tube, the second outer tube alternates on the second pipeline joint, the lower extreme fixed mounting that first pipeline connects has the external screw thread external member, the lower extreme fixed mounting of external screw thread external member has first rubber sleeve, the lower extreme fixed mounting of first rubber sleeve has the internal thread connecting pipe, the upper end threaded connection of internal thread connecting pipe and second pipeline joint.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: the inner wall surface of the upper end of the first outer sleeve is provided with a first internal thread part, the first internal thread part is in threaded connection with the external thread sleeve, the first outer sleeve is fixedly provided with a limiting disc, and the limiting disc is in alternate connection with the first pipeline joint.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: the inner wall of the first outer sleeve is provided with a clamping groove, a second rubber sleeve is installed in the clamping groove, and the second rubber sleeve is inserted into the inner thread connecting pipe and connected with the first rubber sleeve.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: the outer wall surface of the lower end of the first outer sleeve is provided with an external thread part, the inner wall surface of the lower end of the first outer sleeve is provided with a second internal thread part, and the second internal thread part is in threaded connection with a second pipeline joint.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: a supporting disc is fixedly inserted in the second pipeline joint in a penetrating mode, and a rubber pad is arranged at the upper end of the supporting disc.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: the second rubber sleeve comprises a fixed backing ring fixedly connected with the inner wall of the first outer sleeve, a connecting backing disc is fixedly mounted at the upper end and the lower end of the fixed backing ring, and the connecting backing disc is of a trapezoidal cone structure.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: and a third internal thread part is arranged on the inner wall surface of the second outer sleeve and is in threaded connection with the external thread part.

As an alternative of the high-tightness high-pressure oil pipe joint of the present invention, wherein: the lower end of the second outer sleeve is fixedly provided with a bottom plate, and the bottom plate is connected with the second pipeline joint in an inserting mode.

The utility model has the following beneficial effects:

1. this high leakproofness high pressure fuel pipe connects, during the use, operating personnel passes first outer tube by bottom to top with first pipe joint, and pass first outer tube by bottom to top with second pipe joint, second pipe joint can dock with first pipe joint, the junction setting of first pipe joint and second pipe joint is in first outer tube, the intensity of junction has been increased, it is not hard up to have reduced to cause the junction because of the vibration, and simultaneously, can avoid sealed department to expose outdoors, the leakproofness has been increased, excellent in use effect.

2. This high leakproofness high pressure oil pipe connects, second pipe joint is rotatory along second internal thread portion earlier, again with female connection pipe threaded connection, can improve with the fastening nature between first pipe joint and the first outer tube, in-process, support a set extrusion rubber pad, fix the lower extreme at first outer tube, be convenient for carry on spacingly and fixedly to second pipe joint, the rubber pad has the leakproofness simultaneously, consequently, first outer tube, form a sealed space between rubber pad and the first rubber sleeve jointly, make oil pipe joint department have dual guarantee, it is sealed effectual.

3. This high leakproofness high pressure fuel pipe connects, at the in-process of connecting, the upper and lower both ends of second rubber sleeve are extruded by first pipe joint and second pipe joint respectively, and the second rubber sleeve is bellows structure, and two sets of connection pad dishes press close to mutually, and whole diameter enlarges, can laminate with first pipe joint and second pipe joint respectively, and compactness is strong.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an exploded view of the present invention.

FIG. 4 is a schematic structural view of a second rubber sleeve according to the present invention.

In the figure: 1. a first pipe joint; 11. an external thread sleeve; 12. a first rubber sleeve; 13. an internal thread connecting pipe; 2. a second pipe joint; 21. disc pushing; 3. a first outer sleeve; 31. a first internal thread portion; 32. a limiting disc; 33. a card slot; 34. an external threaded portion; 35. a second internal threaded portion; 4. a second outer sleeve; 41. a third internal thread portion; 42. a base plate; 5. a second rubber sleeve; 51. a fixed backing ring; 52. connecting a cushion disc; 6. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

In this embodiment, please refer to fig. 1-3, which is intended to facilitate solving the problem of how to ensure the sealing performance and stability of the joint between two pipelines, and a high-sealing high-pressure oil pipe joint includes a first pipeline joint 1 and a second pipeline joint 2 installed at one end of the first pipeline joint 1, a first outer sleeve 3 is sleeved at the joint between the first pipeline joint 1 and the second pipeline joint 2, a second outer sleeve 4 is disposed at the lower end of the first outer sleeve 3, the second outer sleeve 4 is inserted onto the second pipeline joint 2, an external thread external member 11 is fixedly installed at the lower end of the first pipeline joint 1, a first rubber sleeve 12 is fixedly installed at the lower end of the external thread external member 11, an internal thread connecting pipe 13 is fixedly installed at the lower end of the first rubber sleeve 12, and the internal thread connecting pipe 13 is in threaded connection with the upper end of the second pipeline joint 2.

During the use, operating personnel passes first outer tube 3 with first pipe joint 1 from bottom to top, and pass first outer tube 3 with second pipe joint 2 from bottom to top, second pipe joint 2 can dock with first pipe joint 1, second pipe joint 2 passes through female connection pipe 13 and first pipe joint 1 threaded connection, in the use, the junction setting of first pipe joint 1 and second pipe joint 2 is in first outer tube 3, the intensity of junction has been increased, it is not hard up to have reduced because of the vibration causes the junction, simultaneously, can avoid the sealed department to expose outdoors, its leakproofness has been increased, excellent in use effect.

Through installing first rubber sleeve 12, rubber has elasticity, and when the pipeline was in the vibration, first rubber sleeve 12 can support the inner wall of first outer tube 3, reducible first pipe joint 1's vibration, and stability is strong.

Example 2

In the present embodiment, it is intended to promote how to solve the problem of how to seal the joint of the pipe joints, and the present embodiment is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 1-3, an inner wall surface of an upper end of the first outer sleeve 3 is provided with a first internal thread portion 31, the first internal thread portion 31 is in threaded connection with the external thread sleeve 11, so as to facilitate fastening connection between the first outer sleeve 3 and the first pipe joint 1, the first outer sleeve 3 is fixedly mounted with a limiting disc 32, and the limiting disc 32 is in penetrating connection with the first pipe joint 1.

In the process of threaded connection, the limiting disc 32 can limit the first pipe joint 1, so that the first outer sleeve 3 and the first pipe joint 1 can be fixed conveniently.

A clamping groove 33 is formed in the inner wall of the first outer sleeve 3, a second rubber sleeve 5 is installed in the clamping groove 33, and the second rubber sleeve 5 penetrates through the inner thread connecting pipe 13 to be connected with the first rubber sleeve 12.

In the process of threaded connection of the second pipe joint 2, the first rubber sleeve 12 is abutted against the second rubber sleeve 5, so that the tightness between the first rubber sleeve 12 and the first outer sleeve 3 is increased, and meanwhile, the limit effect of the limit disc 32 is matched, so that the sliding range of the first rubber sleeve 12 can be limited, and the outer end of the first outer sleeve 3 is prevented from sliding out.

The outer wall surface of the lower end of the first outer sleeve 3 is provided with an external thread portion 34, the inner wall surface of the lower end of the first outer sleeve 3 is provided with a second internal thread portion 35, and the second internal thread portion 35 is screwed with the second pipe joint 2.

Second pipe joint 2 is rotatory along second internal thread portion 35 earlier at the threaded connection in-process, again with female connection 13 threaded connection, can improve with the fastening nature between first pipe joint 1 and the first outer tube 3, and a plurality of threaded connection go on simultaneously, and the holistic intensity of device is great, and anti-drop is effectual.

A support disc 21 is fixedly inserted on the second pipeline joint 2, and a rubber pad 6 is arranged at the upper end of the support disc 21.

Second pipe joint 2 supports dish 21 extrusion rubber pad 6 at the threaded connection in-process, fixes the lower extreme at first outer tube 3, is convenient for carry on spacingly and fixed to second pipe joint 2, and rubber pad 6 has the leakproofness simultaneously, consequently forms a sealed space jointly between first outer tube 3, rubber pad 6 and the first rubber sleeve 12 for oil pipe joint department has dual guarantee, and is sealed effectual.

Example 3

In the present embodiment, aiming to facilitate solving the problem of how to reinforce the device, the present embodiment is an improvement made on the basis of embodiment 2, specifically, referring to fig. 3 and fig. 4, the second rubber sleeve 5 includes a fixed backing ring 51 fixedly connected to the inner wall of the first outer sleeve 3, both ends of the upper and lower connection of the fixed backing ring 51 are fixedly mounted with a connection backing disc 52, and the connection backing disc 52 is in a trapezoidal cone structure.

In the process of connecting, the upper and lower both ends of second rubber sleeve 5 are extruded by first pipe joint 1 and second pipe joint 2 respectively, and second rubber sleeve 5 is bellows structure, and two sets of connection saucer 52 are pressed close to each other, and whole diameter enlarges, can laminate with first pipe joint 1 and second pipe joint 2 respectively, and the compactness is strong.

The inner wall surface of the second outer sleeve 4 is provided with a third female screw portion 41, and the third female screw portion 41 is screwed to the male screw portion 34.

The lower end of the second outer sleeve 4 is fixedly provided with a bottom plate 42, and the bottom plate 42 is inserted and connected with the second pipeline joint 2.

After the first pipe joint 1, the second pipe joint 2 and the first outer sleeve 3 are connected, the second outer sleeve 4 is inserted into the second pipe joint 2 from bottom to top and is in threaded connection with the external thread part 34, the bottom plate 42 is abutted against the abutting disc 21, the strength between the second pipe joint 2 and the first outer sleeve 3 can be increased, the reinforcement is convenient, and the stability of the device is strong.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a high leakproofness high pressure fuel pipe connects, includes first pipe joint (1) and installs second pipe joint (2) in first pipe joint (1) one end, its characterized in that: the joint of first pipe joint (1) and second pipe joint (2) has cup jointed first outer tube (3), the lower extreme of first outer tube (3) is provided with second outer tube (4), second outer tube (4) alternate on second pipe joint (2), the lower extreme fixed mounting of first pipe joint (1) has external screw thread external member (11), the lower extreme fixed mounting of external screw thread external member (11) has first rubber sleeve (12), the lower extreme fixed mounting of first rubber sleeve (12) has female connection pipe (13), female connection pipe (13) and the upper end threaded connection of second pipe joint (2).

2. The high-tightness high-pressure oil pipe joint according to claim 1, characterized in that: the inner wall face of the upper end of the first outer sleeve (3) is provided with a first internal thread portion (31), the first internal thread portion (31) is in threaded connection with the external thread sleeve (11), a limiting disc (32) is fixedly mounted on the first outer sleeve (3), and the limiting disc (32) is connected with the first pipeline joint (1) in a penetrating mode.

3. The high-tightness high-pressure oil pipe joint as claimed in claim 1, wherein: the inner wall of the first outer sleeve (3) is provided with a clamping groove (33), a second rubber sleeve (5) is installed in the clamping groove (33), and the second rubber sleeve (5) penetrates through the inner thread connecting pipe (13) to be connected with the first rubber sleeve (12).

4. The high-tightness high-pressure oil pipe joint according to claim 1, characterized in that: an external thread part (34) is arranged on the outer wall surface of the lower end of the first outer sleeve (3), a second internal thread part (35) is arranged on the inner wall surface of the lower end of the first outer sleeve (3), and the second internal thread part (35) is in threaded connection with the second pipeline joint (2).

5. The high-tightness high-pressure oil pipe joint according to claim 1, characterized in that: a supporting disc (21) is fixedly inserted in the second pipeline joint (2), and a rubber pad (6) is arranged at the upper end of the supporting disc (21).

6. The high-tightness high-pressure oil pipe joint as claimed in claim 3, wherein: second rubber sleeve (5) include with first outer tube (3) inner wall fixed connection's fixed bolster ring (51), the equal fixed mounting in both ends has connection pad dish (52) about fixed bolster ring (51), connection pad dish (52) are trapezoidal awl structure.

7. The high-tightness high-pressure oil pipe joint as claimed in claim 4, wherein: the inner wall surface of the second outer sleeve (4) is provided with a third internal thread part (41), and the third internal thread part (41) is in threaded connection with the external thread part (34).

8. The high-tightness high-pressure oil pipe joint according to claim 1, characterized in that: the lower end of the second outer sleeve (4) is fixedly provided with a bottom plate (42), and the bottom plate (42) is connected with the second pipeline joint (2) in a penetrating manner.