CN215596703U

CN215596703U - Pipeline expansion joint

Info

Publication number: CN215596703U
Application number: CN202121373126.5U
Authority: CN
Inventors: 刘小军
Original assignee: Jiangsu Hailuhang Pipeline Equipment Co ltd
Current assignee: Jiangsu Hailuhang Pipeline Equipment Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-01-21
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a pipeline expansion joint which comprises a corrugated pipe, wherein flange plates are arranged at two ends of the corrugated pipe, the outer walls of the flange plates are hinged with connecting blocks through fixing blocks, through holes are formed in the side surfaces of two corresponding connecting blocks, and sliding rods are sleeved in the through holes in a sliding mode. The corrugated pipe comprises a connecting block, a first spring, a second spring, a sliding rod, a flange plate, a corrugated pipe and a protective plate, wherein the connecting block is connected with the corrugated pipe through the connecting block, the first spring, the second spring, the sliding rod, the flange plate and the corrugated pipe are matched for use, the flange plate can bear horizontal deformation extrusion force of the connecting pipe, the flange plate can drive the fixing block to enable the connecting block to rotate around a hinge point of the fixing block when the connecting pipe axially deflects, so that the axial deflection of the connecting pipe is compensated, the second rubber block of the connecting block can limit the rotation angle of the connecting block under the limiting action of the protective plate and the second rubber block, the corrugated pipe is prevented from being excessively deformed, and accordingly the corrugated pipe is protected, and blockage caused by excessive deformation is avoided.

Description

Pipeline expansion joint

Technical Field

The utility model relates to the technical field of expansion joints, in particular to a pipeline expansion joint.

Background

The pipeline expansion joint is also called a telescopic device, a telescopic joint and a compensator. The pipeline expansion joint can axially extend and retract within a certain range, and can overcome the offset generated by different axial directions of pipeline butt joint within a certain angle, so that the valve pipeline can be greatly convenient to mount and dismount; mainly for guaranteeing the safe operation of pipeline, have following effect: compensating the axial, transverse and angular thermal deformation of the absorption pipeline; the vibration of the equipment is absorbed, and the influence of the vibration of the equipment on the pipeline is reduced; the deformation of the pipeline caused by earthquake and ground subsidence is absorbed.

However, when the existing pipeline expansion joint is used and a connecting pipeline is axially deviated, the pipeline expansion joint provides axial deviation, but the axial limiting capacity of the existing pipeline expansion joint is insufficient, the pipeline expansion joint is easily over-axially deformed and difficult to retract, and therefore blockage is caused in the expansion joint, and therefore, in order to solve the problems, the pipeline expansion joint is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a pipeline expansion joint.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a pipeline expansion joint, includes the bellows, the outer wall that the both ends of bellows all were provided with ring flange and ring flange articulates through the fixed block has a connecting block, corresponding two in the through-hole has all been seted up to the side of connecting block and two through-holes in sliding cup jointed the slide bar, fixed the cover has been connected on the slide bar and has been provided with the third spring between solid fixed ring and the connecting block, the tip of slide bar is provided with stopper and is provided with first spring between the connecting block, the side of fixed block is provided with and is provided with the second rubber block between backplate and the connecting block, be provided with spacing supporting mechanism between slide bar and the bellows.

Preferably, the limiting and supporting mechanism is hinged to a transverse plate through a fixing column at the top of a fixing plate and the top of the fixing plate, the outer wall of the sliding rod is fixedly connected with a first rubber block and the first rubber block is arranged at the top of the transverse plate, a sliding groove is formed in the bottom of the transverse plate, a guide rod is sleeved in a sleeve and the sleeve in a sliding mode, the end portion of the guide rod is rotatably provided with a roller and the roller is installed in the sliding groove in a rolling mode, and a second spring is arranged between the sleeve and the guide rod.

Preferably, the inner wall of the arc-shaped corrugated section of the corrugated pipe is provided with an arc-shaped elastic sheet, and the arc-shaped elastic sheet is attached to the inner wall of the arc-shaped corrugated section of the corrugated pipe and has elastic stress.

Preferably, the slide bar is located within the first spring and the third spring.

Preferably, a sliding sleeve is arranged in the through hole, and the sliding rod is sleeved in the sliding sleeve in a sliding manner.

Preferably, the connecting surface of the flange plate is provided with a sealing gasket, and the corrugated pipe is a metal corrugated pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1: the corrugated pipe comprises a connecting block, a first spring, a second spring, a sliding rod, a flange plate, a corrugated pipe and a protective plate, wherein the connecting block is connected with the corrugated pipe through the connecting block, the first spring, the second spring, the sliding rod, the flange plate and the corrugated pipe are matched for use, the flange plate can bear horizontal deformation extrusion force of the connecting pipe, the flange plate can drive the fixing block to enable the connecting block to rotate around a hinge point of the fixing block when the connecting pipe axially deflects, so that the axial deflection of the connecting pipe is compensated, the second rubber block of the connecting block can limit the rotation angle of the connecting block under the limiting action of the protective plate and the second rubber block, the corrugated pipe is prevented from being excessively deformed, and accordingly the corrugated pipe is protected, and blockage caused by excessive deformation is avoided.

2: according to the utility model, when the connecting pipeline is axially deviated, the sliding rod is driven to be angularly deviated, so that the sliding rod compresses the first rubber block through the connecting rod, the angular deviation of the sliding rod can be limited, and the transverse plate can be driven to rotate around a hinge point with the fixed column when the first rubber block is extruded and pulled, so that the transverse plate compresses the second spring through the roller, and a limiting force is provided for the transverse plate, so that the limiting force is provided for the transverse plate when the corrugated pipe is deformed due to the axial deviation of the connecting pipeline, excessive deformation of the corrugated pipe is avoided, and under the action of the sleeve, the guide rod and the second spring, the transverse plate is stressed in a horizontal state, so that a horizontal force can be provided for the sliding rod through the first rubber block and the connecting rod, and the corrugated pipe can be restored to be normal by providing the horizontal force for the corrugated pipe after the connecting pipeline is restored to be normal.

Drawings

FIG. 1 is a schematic structural view of a pipe expansion joint according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a partially enlarged view of a portion B in fig. 1.

In the figure: 1. a bellows; 2. a flange plate; 3. a fixed block; 4. a guard plate; 5. a limiting block; 6. a first spring; 7. a fixing ring; 8. a slide bar; 9. a first rubber block; 10. a connecting rod; 11. a fixing plate; 12. a transverse plate; 13. a roller; 14. fixing a column; 15. a second spring; 16. an arc-shaped elastic sheet; 17. a sleeve; 18. a guide bar; 19. a chute; 20. connecting blocks; 21. a sliding sleeve; 22. a second rubber block; 23. and a third spring.

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.

Example 1

Referring to fig. 1-3, a pipeline expansion joint comprises a corrugated pipe 1, wherein two ends of the corrugated pipe 1 are respectively provided with a flange 2, the outer wall of the flange 2 is hinged with a connecting block 20 through a fixing block 3, the side surfaces of two corresponding connecting blocks 20 are respectively provided with a through hole, a slide rod 8 is sleeved in the through holes in a sliding manner, a fixing ring 7 is fixedly sleeved on the slide rod 8, a third spring 23 is arranged between the fixing ring 7 and the connecting block 20, the end part of the slide rod 8 is provided with a limiting block 5, a first spring 6 is arranged between the limiting block 5 and the connecting block 20, the side surface of the fixing block 3 is provided with a protective plate 4, a second rubber block 22 is arranged between the protective plate 4 and the connecting block 20, a limiting support mechanism is arranged between the slide rod 8 and the corrugated pipe 1, the inner wall of the arc-shaped corrugated section of the corrugated pipe 1 is provided with an arc-shaped elastic sheet 16, the arc-shaped elastic sheet 16 is attached to the inner wall of the arc-shaped corrugated section of the corrugated pipe 1 and has elastic stress, the slide bar 8 is positioned in the first spring 6 and the third spring 23, a sliding sleeve 21 is arranged in the through hole, the slide bar 8 is sleeved in the sliding sleeve 21 in a sliding manner, a sealing gasket is arranged on the connecting surface of the flange plate 2, and the corrugated pipe 1 is a metal corrugated pipe. When in use, the device is communicated with two connecting pipelines through the flange plate 2, the sealing washer arranged on the connecting surface of the flange plate 2 and the connecting pipelines can increase the sealing performance between the connecting pipelines, when the connecting pipelines generate horizontal deformation, the corrugated pipe 1 can be compressed through the flange plate 2, the corrugated pipe 1 can compensate the horizontal deformation of the connecting pipelines, when the deformation occurs, the connecting block can compress the first spring 6 or the third spring 23, the first spring 6 and the third spring 23 are matched for use, elastic stress can be provided for the corrugated pipe 1 to recover after the pipeline deformation is finished, when the connecting pipelines generate axial deviation, the flange plate 2 can drive the fixing block 3 to enable the connecting block 20 to rotate around a hinge point with the fixing block 3, thereby compensating the axial deviation of the connecting pipelines, and the connecting block 20 is under the limiting action of the guard plate 4 and the second rubber block 22, its second rubber block 22 can carry on spacingly to the rotation angle of connecting block 20, can avoid its connecting block 20 rotation angle excessively to cause bellows 1 to warp excessively to provide protectiveness to bellows 1, avoid it to take place to block up because of warping excessively, can strengthen the deformability that receives of bellows 1 through arc shell fragment 16, and can avoid the arc ripple festival of bellows 1 inner wall to receive the excessive two rupture phenomena that take place of extrusion, improved the protectiveness to bellows 1.

Example 2

Referring to fig. 1 to 3, in the case where the other parts are the same as those of embodiment 1, this embodiment is different from embodiment 1 in that: spacing supporting mechanism has diaphragm 12 including setting up the top that has fixed column 14 to articulate at fixed plate 11 and fixed plate 11 of bellows 1 outer wall, the outer wall of slide bar 8 has first block rubber 9 and first block rubber 9 to set up at diaphragm 12 top through connecting rod 10 rigid coupling, spout 19 has been seted up to diaphragm 12 bottom, sleeve 17 and sleeve 17 sliding sleeve have been installed at the top of fixed plate 11 and have been cup jointed guide bar 18, the tip of guide bar 18 is rotated and is provided with gyro wheel 13 and gyro wheel 13 roll installation in spout 19, be provided with second spring 15 between sleeve 17 and the guide bar 18. When the connecting pipeline generates axial deviation, the sliding rod 8 is driven to generate angular deviation, so that the sliding rod 8 compresses the first rubber block 9 through the connecting rod 10, the angular deviation of the sliding rod 8 can be limited, and when the first rubber block 9 is extruded and pulled, the transverse plate 12 can be driven to rotate around a hinge point with the fixed column 14, so that the transverse plate 12 compresses the second spring 15 through the roller 13, and therefore, a limiting force is provided for the transverse plate 12, the limiting force is provided for the corrugated pipe 1 when the corrugated pipe 1 deforms due to the axial deviation of the connecting pipeline, the corrugated pipe 1 is prevented from excessively deforming, and under the action of the sleeve 17, the guide rod 18 and the second spring 15, the transverse plate 12 is stressed in a horizontal state, so that a horizontal force can be provided for the sliding rod 8 through the first rubber block 9 and the connecting rod 10, and therefore, the horizontal force can be provided for the corrugated pipe 1 to restore the connecting pipeline to normal state after the connecting pipeline restores to normal state, and the limit support mechanism can provide support force for the slide rod 8, so that the corrugated pipe 1 is prevented from being inclined under the condition of no stress, and the corrugated pipe can be kept in a horizontal state.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A pipeline expansion joint comprises a corrugated pipe (1) and is characterized in that two ends of the corrugated pipe (1) are respectively provided with a flange (2), the outer wall of each flange (2) is hinged with a connecting block (20) through a fixing block (3), the side surfaces of two corresponding connecting blocks (20) are respectively provided with a through hole, and a sliding rod (8) is sleeved in the two through holes in a sliding manner, a fixed ring (7) is fixedly sleeved on the sliding rod (8), a third spring (23) is arranged between the fixed ring (7) and the connecting block (20), a limiting block (5) is arranged at the end part of the sliding rod (8), a first spring (6) is arranged between the limiting block (5) and the connecting block (20), a guard plate (4) is arranged on the side surface of the fixed block (3), a second rubber block (22) is arranged between the guard plate (4) and the connecting block (20), and a limiting support mechanism is arranged between the sliding rod (8) and the corrugated pipe (1).

2. The pipeline expansion joint according to claim 1, wherein the limiting support mechanism comprises a fixing plate (11) arranged on the outer wall of the corrugated pipe (1), a transverse plate (12) is hinged to the top of the fixing plate (11) through a fixing column (14), a first rubber block (9) is fixedly connected to the outer wall of the sliding rod (8) through a connecting rod (10), the first rubber block (9) is arranged on the top of the transverse plate (12), a sliding groove (19) is formed in the bottom of the transverse plate (12), a sleeve (17) is installed on the top of the fixing plate (11), a guide rod (18) is sleeved in the sleeve (17) in a sliding mode, a roller (13) is rotatably arranged at the end of the guide rod (18), the roller (13) is installed in the sliding groove (19) in a rolling mode, and a second spring (15) is arranged between the sleeve (17) and the guide rod (18).

3. The pipeline expansion joint according to claim 1, wherein the inner wall of the arc-shaped corrugated section of the corrugated pipe (1) is provided with arc-shaped elastic pieces (16), and the arc-shaped elastic pieces (16) are attached to the inner wall of the arc-shaped corrugated section of the corrugated pipe (1) and have elastic stress.

4. A pipe expansion joint according to claim 1, characterized in that the slide rod (8) is located inside the first spring (6) and the third spring (23).

5. The pipeline expansion joint as claimed in claim 1, wherein a sliding sleeve (21) is arranged in the through hole, and the sliding rod (8) is slidably sleeved in the sliding sleeve (21).

6. A pipe expansion joint according to claim 1, wherein the joint face of the flange (2) is provided with a sealing gasket, and the bellows (1) is a metal bellows.