CN216242912U

CN216242912U - Axial type ripple expansion joint

Info

Publication number: CN216242912U
Application number: CN202122301526.1U
Authority: CN
Inventors: 莫思凡; 朱玉禄; 莫强
Original assignee: Anhui Zhongmai Industrial Equipment Technology Co ltd
Current assignee: Anhui Zhongmai Industrial Equipment Technology Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-08
Anticipated expiration: 2031-09-18

Abstract

The utility model discloses an axial corrugated expansion joint which comprises a corrugated pipe, wherein connecting pipes are respectively arranged at two ends of the corrugated pipe and are communicated with the interior of the corrugated pipe, a flow guide pipe is sleeved in each connecting pipe in a sliding mode, one end, far away from the corrugated pipe, of each flow guide pipe penetrates through the corresponding connecting pipe, an annular placing groove is formed in the outer wall of each flow guide pipe, an annular sealing ring is arranged in each placing groove, the outer wall of each sealing ring is tightly attached to the inner wall of each connecting pipe, and sliding grooves are symmetrically formed in the inner wall of each connecting pipe. The expansion joint has better connection sealing performance with the conveying pipeline, and is more convenient to adjust the expansion joint in a telescopic way.

Description

Axial type ripple expansion joint

Technical Field

The utility model relates to the technical field of expansion joints, in particular to an axial corrugated expansion joint.

Background

In order to ensure the stability and safety of the pipeline in a hot state and reduce the stress generated by expansion with heat and contraction with cold of the pipeline, fixed supports and compensation devices are arranged on the pipeline at certain intervals. The sleeve compensator is easy to leak due to the adoption of a packing sealing structure and needs periodic maintenance. The corrugated expansion joint is a novel compensation element for absorbing the deformation of a pipe system by utilizing the flexibility of a metal corrugated pipe, has the advantage of compact structure of a sleeve compensator, and has the advantage of reliable operation and maintenance-free performance of a square compensator. The particular advantage of the bellows expansion joint is that it can be used to compensate for axial, lateral and angular deformations of pipes and equipment, and the combined displacements of these deformations.

Two ring flanges on common expansion joint pass through threaded rod interconnect, the equal screw thread in both sides that lie in the ring flange on the threaded rod has cup jointed the nut, when the adjustment is used, need rotate the bellows on the adjustment expansion joint behind one of them nut, then two nuts of rethread carry out the rigidity, the expansion joint adjustment is comparatively loaded down with trivial details during the use, inconvenient during the use, when ring flange on the expansion joint and the ring flange interconnect on the pipeline are fixed, the condition of leaking can appear often, the expansion joint is not good with pipeline's sealed effect of being connected, certain potential safety hazard has.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides an axial corrugated expansion joint.

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

the utility model provides an axial type ripple expansion joint, includes the bellows, the connecting pipe is all installed at the both ends of bellows, and the honeycomb duct has been cup jointed in the inside intercommunication of connecting pipe and bellows all slides in two connecting pipes, and the one end that the bellows was kept away from to the honeycomb duct runs through the connecting pipe, has seted up annular standing groove on the outer wall of honeycomb duct, installs annular sealing washer in the standing groove, and the outer wall of sealing washer is hugged closely on the inner wall of connecting pipe, and the spout has been seted up to the symmetry on the inner wall of connecting pipe.

Preferably, the sliding block is arranged in the sliding groove in a sliding mode, one end, far away from the inner wall of the connecting pipe, of the sliding block is fixed to one end, close to the corrugated pipe, of the outer wall of the flow guide pipe, and the first flange plates are fixedly sleeved on the two connecting pipes.

Preferably, the opposite faces of the two first flange plates are symmetrically provided with screw holes, a rotating rod is installed between the two first flange plates, and the outer walls at the two ends of the rotating rod are respectively provided with left-handed threads and right-handed threads.

Preferably, the screw holes in the two first flange plates are respectively penetrated through the two ends of the rotating rod, and the left-handed threads and the right-handed threads on the rotating rod are respectively in threaded sleeve connection with the screw holes in the two first flange plates.

Preferably, the both ends of dwang have all been cup jointed the stopper, and the fixed cover is connected with the turning block on the dwang, and the turning block is located between left-handed screw and the right-handed screw.

Preferably, the delivery pipe is sleeved on the flow guide pipe, and one end, far away from the corrugated pipe, of the outer wall of the sealing ring is tightly attached to the inner wall of the delivery pipe.

Preferably, the conveying pipe is fixedly sleeved with a second flange plate at one end close to the connecting pipe, the two second flange plates are respectively sleeved on the left-handed thread and the right-handed thread of the rotating rod in a threaded manner, and the second flange plates are located between the first flange plates and the limiting blocks.

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

1. the inside of connecting pipe on the expansion joint and conveyer pipe is through honeycomb duct interconnect, and the outer wall both ends of sealing washer on the honeycomb duct respectively with the inner wall in close contact with of connecting pipe and conveyer pipe, can promote expansion joint and duct connections's sealed effect greatly when using, prevent the liquid leakage of transport, the security performance is better, and has improved expansion joint and duct connections's stability ability greatly.

2. When adjusting the distance of two first ring flanges on the expansion joint, the accessible rotates the turning block and makes first ring flange and the second ring flange that is located on both ends move, and the bellows can stretch out and draw back simultaneously, and is more convenient during the adjustment, and the first ring flange in both ends of expansion joint passes through dwang interconnect, makes the expansion joint more convenient when flexible adjustment.

Drawings

FIG. 1 is a perspective view of an axial type bellows expansion joint according to the present invention;

FIG. 2 is a cross-sectional view of an axial type bellows expansion joint according to the present invention;

fig. 3 is an enlarged view of the axial type bellows expansion joint according to the present invention at a.

In the figure: 1. a bellows; 2. a connecting pipe; 3. a flow guide pipe; 4. a first flange plate; 5. rotating the rod; 6. rotating the block; 7. a limiting block; 8. left-handed threads; 9. right-hand threads; 10. a screw hole; 11. a placement groove; 12. a seal ring; 13. a chute; 14. a slider; 15. a delivery pipe; 16. a second flange.

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.

Referring to fig. 1-3, an axial type ripple expansion joint, including bellows 1, connecting pipe 2 is all installed at the both ends of bellows 1, connecting pipe 2 and the inside intercommunication of bellows 1, honeycomb duct 3 has all been cup jointed in two connecting pipes 2 to slide, honeycomb duct 3 runs through connecting pipe 2 far away from the one end of bellows 1, annular standing groove 11 has been seted up on honeycomb duct 3's the outer wall, install annular sealing washer 12 in the standing groove 11, the outer wall of sealing washer 12 is hugged closely on the inner wall of connecting pipe 2, spout 13 has been seted up to the symmetry on the inner wall of connecting pipe 2.

As a technical optimization scheme of the utility model, a sliding block 14 is arranged in a sliding groove 13 in a sliding manner, one end of the sliding block 14, which is far away from the inner wall of a connecting pipe 2, is fixed at one end of the outer wall of a flow guide pipe 3, which is close to a corrugated pipe 1, a first flange plate 4 is fixedly sleeved on each of the two connecting pipes 2, and one end of the flow guide pipe 3, which is far away from the corrugated pipe 1, can be inserted into a conveying pipe 15 when an expansion joint is connected with the conveying pipe 15, so that the connecting and fixing effects of the conveying pipe 15 and the expansion joint are better.

As a technical optimization scheme of the utility model, the opposite surfaces of the two first flange plates 4 are symmetrically provided with screw holes 10, a rotating rod 5 is arranged between the two first flange plates 4, the outer walls of the two ends of the rotating rod 5 are respectively provided with a left-handed thread 8 and a right-handed thread 9, the two first flange plates 4 on the expansion joint are mutually connected through the rotating rod 5, and the expansion joint is more stably connected with the conveying pipes 15 at the two ends when in use.

As a technical optimization scheme of the utility model, two ends of the rotating rod 5 respectively penetrate through screw holes 10 on the two first flange plates 4, the left-handed screw threads 8 and the right-handed screw threads 9 on the rotating rod 5 are respectively in threaded sleeve connection with the screw holes 10 on the two first flange plates 4, two ends of the rotating rod 5 are respectively in threaded sleeve connection with a limiting block 7, the rotating rod 5 is fixedly sleeved with a rotating block 6, and the rotating block 6 is positioned between the left-handed screw threads 8 and the right-handed screw threads 9. By rotating the rotating block 6, the rotating rod 5 and the two rotating threads can be driven to rotate, and the two first flange plates 4 are driven to move, so that the corrugated pipe 1 can be stretched.

As a technical optimization scheme of the utility model, the delivery pipes 15 are sleeved on the draft tubes 3, and one ends of the outer walls of the sealing rings 12, which are far away from the corrugated pipe 1, are tightly attached to the inner walls of the delivery pipes 15. The two ends of the outer wall of the sealing ring 12 are respectively in close contact with the inner walls of the connecting pipe 2 and the conveying pipe 15, so that the sealing performance of the connection of the expansion joint and the conveying pipe 15 is better.

As a technical optimization scheme of the utility model, one end of the conveying pipe 15 close to the connecting pipe 2 is fixedly sleeved with a second flange 16, the two second flanges 16 are respectively in threaded sleeve joint with the left-handed thread 8 and the right-handed thread 9 of the rotating rod 5, the second flange 16 is positioned between the first flange 4 and the limiting block 7, the second flange 16 can be in threaded sleeve joint with the left-handed thread 8 and the right-handed thread 9 on the rotating rod 5, and the first flange 4 and the second flange 16 can be driven to move simultaneously when the rotating rod 5 is rotated.

When in use, the expansion joint is positioned between two conveying pipes 15, the second flanges 16 on the conveying pipes 15 are arranged on two sides of the expansion joint and are mutually connected with the first flange plates 4 at two ends of the expansion joint, the second flange plates 16 are mutually tightly connected with the first flange plates 4, two ends of the rotating rod 5 are inserted into the screw holes 10, the first flange plates 4 and the second flange plates 16 at two ends of the expansion joint are respectively in threaded sleeve joint on the left-handed threads 8 and the right-handed threads 9 at two ends of the rotating rod 5, when the expansion joint is connected with the conveying pipes 15, one ends of the guide pipes 3 in the connecting pipes 2 at two ends of the corrugated pipes 1 of the expansion joint, which are far away from the corrugated pipes 1, are inserted into the conveying pipes 15, one ends of the outer walls of the sealing rings 12 in the placing grooves 11 on the outer walls of the guide pipes 3 are tightly attached to the inner walls of the conveying pipes 15, the other ends of the outer walls of the sealing rings 12 are tightly attached to the inner walls of the connecting pipes 2, when the second flange plates 16 are arranged on the side surfaces of the first flanges 4, the delivery pipe 15 pushes the delivery pipe 3 to move away from one end of the corrugated pipe 1, so that the other end of the delivery pipe 3 moves towards the corrugated pipe 1, and slides in the chute 13 on the inner wall of the connecting pipe 2 through the slider 14 on the outer wall of the delivery pipe 3, so that the slider 14 is positioned at one end of the chute 13 close to the corrugated pipe 1, the inner walls of the connecting pipe 2 and the delivery pipe 15 are both connected with the sealing ring 12 on the outer wall of the delivery pipe 3, so that the sealing performance of the connection of the expansion joint and the delivery pipe 15 is better, when the delivery pipe 15 and the expansion joint are used, the rotating block 6 can rotate, the rotating block 6 drives the rotating rod 5 to rotate, when the rotating rod 5 rotates, the left-handed thread 8 and the right-handed thread 9 on the two ends of the rotating rod 5 are driven to rotate, the left-handed thread 8 and the right-handed thread 9 drive the two first flange plates 4 and the second flange plate 16 to move towards the corrugated pipe 1, and the corrugated pipe 1 retracts along with the movement of the flange plates, rotate turning block 6 alright when the expansion joint is adjusted, it is more convenient during the adjustment, stopper 7 is all installed at the both ends of dwang 5, when first ring flange 4 and second ring flange 16 remove, can prescribe a limit to the displacement of first ring flange 4 and second ring flange, bellows 1 flexible distance is prescribed a limit, it is longer to prevent that bellows 1 extending distance from, cause the damage to bellows 1 itself, and the expansion joint is better with the sealing performance of being connected of conveyer pipe 15, prevent the liquid leakage of carrying.

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. The utility model provides an axial type ripple expansion joint, including bellows (1), a serial communication port, connecting pipe (2) are all installed at the both ends of bellows (1), the inside intercommunication of connecting pipe (2) and bellows (1), honeycomb duct (3) have all been cup jointed in two connecting pipes (2) in the slip, the one end that bellows (1) were kept away from in honeycomb duct (3) runs through connecting pipe (2), annular standing groove (11) have been seted up on the outer wall of honeycomb duct (3), install annular sealing washer (12) in standing groove (11), the outer wall of sealing washer (12) is hugged closely on the inner wall of connecting pipe (2), spout (13) have been seted up to the symmetry on the inner wall of connecting pipe (2).

2. The axial corrugated expansion joint as claimed in claim 1, wherein the sliding groove (13) is slidably mounted with a sliding block (14), one end of the sliding block (14) far away from the inner wall of the connecting pipe (2) is fixed on one end of the outer wall of the guiding pipe (3) close to the corrugated pipe (1), and the first flange (4) is fixedly sleeved on each of the two connecting pipes (2).

3. The axial corrugated expansion joint according to claim 2, wherein the two first flanges (4) are symmetrically provided with screw holes (10) on opposite surfaces, a rotating rod (5) is arranged between the two first flanges (4), and the outer walls of the two ends of the rotating rod (5) are respectively provided with a left-hand thread (8) and a right-hand thread (9).

4. The axial corrugated expansion joint according to claim 3, wherein both ends of the rotating rod (5) respectively penetrate through the screw holes (10) of the two first flanges (4), and the left-handed thread (8) and the right-handed thread (9) on the rotating rod (5) are respectively in threaded sleeve connection with the screw holes (10) of the two first flanges (4).

5. The axial corrugated expansion joint as claimed in claim 3, wherein the two ends of the rotating rod (5) are sleeved with the limiting blocks (7), the rotating rod (5) is fixedly sleeved with the rotating block (6), and the rotating block (6) is located between the left-handed thread (8) and the right-handed thread (9).

6. An axial type corrugated expansion joint according to claim 5, characterized in that the delivery pipe (15) is sleeved on the flow guide pipe (3), and the end of the outer wall of the sealing ring (12) far away from the corrugated pipe (1) is tightly attached to the inner wall of the delivery pipe (15).

7. An axial type corrugated expansion joint according to claim 6, wherein a second flange (16) is fixedly sleeved on one end of the conveying pipe (15) close to the connecting pipe (2), the two second flanges (16) are respectively in threaded connection with the left-hand thread (8) and the right-hand thread (9) of the rotating rod (5), and the second flange (16) is positioned between the first flange (4) and the limiting block (7).