CN212131646U

CN212131646U - Tensile flexible connecting pipe for pipeline

Info

Publication number: CN212131646U
Application number: CN202020175077.3U
Authority: CN
Inventors: 凌坚昌
Original assignee: Suzhou Jointand Piping System Co ltd
Current assignee: Suzhou Jointand Piping System Co ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-12-11
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses a pipeline tensile flexible connecting pipe, which is applied in the field of pipe fitting installation and solves the technical problem of unstable tensile strength of connecting pieces after the existing pipeline installation, the technical proposal is that the flexible connecting pipe comprises a pair of pipe joints and a tensile pipe connected between the pipe joints, the tensile pipe comprises a flexible inner pipe and a tensile pipe group sleeved outside the flexible inner pipe, the tensile pipe group comprises a tensile pipe I and a tensile pipe II which are movably connected, the tensile pipe I and the tensile pipe II are connected through a plurality of groups of telescopic tension springs, one end of the tensile pipe I opposite to the tensile pipe II is provided with a lantern ring for fixing the telescopic tension springs, the inner walls of the tensile pipe I and the tensile pipe II far away from the telescopic tension springs are provided with limit snap rings, the outer wall of the flexible inner pipe between the limit snap rings is provided with a pair of limit convex rings, and the limit convex rings are symmetrically arranged along the length direction of the flexible inner, the technical effect of improving the tensile stability of the flexible connecting pipe in the pipeline connection is achieved.

Description

Tensile flexible connecting pipe for pipeline

Technical Field

The utility model relates to a pipeline installation field, in particular to flexible takeover of pipeline tensile.

Background

In the process of pipeline connection, rigid connection and flexible connection modes are adopted to meet the requirements of different pipeline connection states.

In the actual operation process, the flexible connection mode can meet the requirement of tearing and vibrating of the pipeline in a certain range in the subsequent use process of the pipeline, so that the fluctuation of the whole pipeline is eliminated by utilizing the flexible connection among the multiple sections of pipelines, and the maximum motion range which can be borne by the pipeline is finally exceeded due to vibration transmission polymerization of the pipeline is reduced.

Then, most of the existing flexible connecting pipes usually rely on the characteristics of the hose bodies of the flexible connecting pipes to eliminate the movement of the connecting and using process of the pipelines, and once the pulling and vibrating processes are overlarge, the tensile property of the flexible connecting pipes cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flexible takeover of pipeline tensile, its advantage is favorable to improving the tensile property of flexible takeover under the pipe connection effect.

The above technical purpose of the present invention can be achieved by the following technical solutions: a tensile flexible connecting pipe for a pipeline comprises a pair of pipe joints and a tensile pipe connected between the pipe joints, and is characterized in that: the tensile pipe comprises a flexible inner pipe and a tensile pipe group arranged outside the flexible inner pipe in a sleeved mode, the tensile pipe group comprises a first tensile pipe and a second tensile pipe which are movably connected, the first tensile pipe and the second tensile pipe are connected through a plurality of groups of telescopic tension springs, one end, opposite to the second tensile pipe, of the first tensile pipe is provided with a lantern ring for fixing the telescopic tension springs, the inner wall, far away from the telescopic tension springs, of one end of the first tensile pipe and the second tensile pipe is provided with a limiting snap ring, the inner wall, far away from the telescopic tension springs, of the first tensile pipe and the second tensile pipe is provided with a pair of limiting convex rings, and the limiting convex rings are symmetrically arranged in the length.

Preferably, the inner diameter of the limiting snap ring is larger than the diameter of the flexible inner pipe.

Preferably, the middle section of the flexible pipe is waved.

Preferably, the inner walls of the opposite sides of the pair of limiting convex rings are provided with damping cushion blocks.

Preferably, a corrugated sleeve is further arranged between the first tensile pipe and the second tensile pipe, and the telescopic tension spring is arranged in the corrugated sleeve.

Preferably, a telescopic reset rod is further arranged in the telescopic tension spring.

Preferably, a sealing block is further arranged between the limiting snap ring and the pipe wall of the flexible inner pipe.

To sum up, the utility model discloses following beneficial effect has:

1. the tensile pipe group arranged on the outer side of the flexible inner pipe can limit and weaken the stretching process of the flexible inner pipe, the synchronous stretching characteristic of the flexible pipe group is used for carrying out an auxiliary tensile process on the whole flexible inner pipe under the condition that the actual use requirement is met, the stability of the tensile property of the whole flexible inner pipe is improved, and the damage to the flexible connecting pipe possibly caused by the swing amplitude of a pipeline is reduced;

2. the inner diameter of the limiting snap ring is larger than the pipe diameter of the flexible inner pipe, so that the bounce of the flexible inner pipe in the vertical direction can be met, the abnormal motion resistance of the whole flexible connecting pipe is guaranteed, and the tensile property is further improved.

Drawings

FIG. 1 is a sectional view for showing the internal structure of a pipe in the embodiment;

fig. 2 is an enlarged view of a in fig. 1.

Reference numerals: 1. a pipe joint; 2. a tensile pipe; 3. a flexible inner tube; 4. a tensile pipe group; 5. a tensile pipe I; 6. a second tensile pipe; 7. a telescopic tension spring; 8. a collar; 9. a limit snap ring; 10. a limit convex ring; 11. damping cushion blocks; 12. a bellows sleeve; 13. a telescopic reset rod; 14. and (6) sealing the block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a tensile flexible connecting pipe for a pipeline is shown in figures 1 and 2 and comprises a pair of pipe joints 1 and a tensile pipe 2 connected between the pipe joints 1, and the tensile performance of the pipeline can be guaranteed by fixedly connecting the pipe joints 1 and a pipe joint port to be connected and arranging the tensile pipe 2.

The tensile pipe 2 comprises a flexible inner pipe 3 and a tensile pipe group 4 sleeved outside the flexible inner pipe 3, the tensile pipe group 4 comprises a first tensile pipe 5 and a second tensile pipe 6 which are movably connected, the flexible connection function of a normal pipeline connecting piece can be realized by the arrangement of the flexible inner pipe 3, and meanwhile, the tensile protection of the flexible inner pipe 3 can be realized by the combined tensile pipe group 4.

As shown in fig. 2, the first tensile pipe 5 and the second tensile pipe 6 are connected through a plurality of sets of extension springs 7, one end of the first tensile pipe 5 opposite to the second tensile pipe 6 is provided with a lantern ring 8 for fixing the extension springs 7, and in actual use, the maximum extension amount of the extension springs 7 can be adjusted by replacing the extension springs 7, so that real-time adjustment of the tensile pipe groups 4 with different tensile grades is met.

As shown in fig. 1 and 2, the inner walls of the ends of the first tensile pipe 5 and the second tensile pipe 6, which are far away from the extension tension spring 7, are provided with a limiting snap ring 9, the outer wall of the flexible inner pipe 3, which is located between the limiting snap rings 9, is provided with a pair of limiting convex rings 10, the pair of limiting convex rings 10 are symmetrically arranged about the length direction of the flexible inner pipe 3, during normal use, the limiting convex rings 10 are located between the limiting snap rings 9, once the flexible inner pipe is largely deformed under the action of an internal conveying medium, the limiting convex rings 10 are abutted against the limiting snap rings 9 during the movement of the flexible inner pipe, and as the flexible force in the flexible inner pipe 3 is continuously increased, the extension spring between the first tensile pipe 5 and the second tensile pipe 6 is extended, so as to weaken and buffer the large displacement movement of the flexible inner pipe 3, when the internal flexible force disappears, the extended extension tension spring 7 can be contracted under the action, thereby restoring the original state between the first tensile pipe 5 and the second tensile pipe 6. The inner wall of one side opposite to the pair of limiting convex rings 10 is provided with a damping cushion block 11, real-time vibration and extrusion absorption can be realized in the extrusion contact process of the limiting convex rings 10 and the limiting snap rings 9, the extrusion force is reduced to act on the limiting convex rings 10, the force feedback is large, and the stable posture of the whole tensile pipe group 4 in the process of eliminating large tensile force is improved.

Since the deformation of the flexible inner tube 3 is irregular, the deformation trends in multiple directions are generated, and in order to ensure stable tensile property of the whole tensile tube group 4, the absorption and weakening of external forces in different directions are realized. The inner diameter of the limiting snap ring 9 is larger than the diameter of the flexible inner tube 3. Can satisfy the vertical activity of flexible inner tube 3 certain range in tensile nest of tubes 4, and then fully ensure the activity and the deformation range of flexible inner tube 3, in case exceed and predetermine reasonable deformation volume, take place the work that the extrusion can trigger tensile nest of tubes 4 between flexible inner tube 3 and tensile nest of tubes 4. The middle section of the flexible pipe is wavy, so that the resistance to the circulating medium can be effectively integrated to a certain extent, and the unstable factor of the conveying medium in the flexible inner pipe 3 is reduced.

Still be equipped with corrugated sleeve 12 between tensile pipe 5 and tensile pipe two 6, flexible extension spring 7 is located corrugated sleeve 12 and can be protected flexible extension spring 7, reduces the erosive wear to flexible extension spring 7 that external environmental factor probably brought in the in-service use. Still be equipped with flexible release link 13 in extension spring 7, can further improve extension and the shrink stability of extension spring 7, further improve the controllable degree of deformation of tensile nest of tubes 4, ensure good tensile slow release performance. Because both ends coupling 1 is the opening form, still is equipped with sealed piece 14 between spacing snap ring 9 and the flexible inner tube 3 pipe wall, can ensure the abundant conflict between coupling 1 and the flexible inner tube 3, reduces the external environment factor that the opening clearance brought and enters into the inside tensile buffering process that influences tensile nest of tubes 4 of tensile nest of tubes 4.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A tensile flexible connecting pipe for a pipeline comprises a pair of pipe joints (1) and a tensile pipe (2) connected between the pipe joints (1), and is characterized in that: tensile pipe (2) include flexible inner tube (3) and cover establish tensile nest of tubes (4) outside flexible inner tube (3), tensile nest of tubes (4) are including swing joint's tensile pipe one (5) and tensile pipe two (6), be connected through multiunit extension spring (7) between tensile pipe one (5) and tensile pipe two (6), the one end that tensile pipe one (5) is relative with tensile pipe two (6) all is equipped with the lantern ring (8) that supplies extension spring (7) to fix, the one end inner wall that flexible extension spring (7) were kept away from to tensile pipe one (5) and tensile pipe two (6) all is equipped with spacing snap ring (9), is located flexible inner tube (3) outer wall between spacing snap ring (9) is equipped with a pair of spacing bulge loop (10), and is a pair of spacing bulge loop (10) are symmetrical about the length direction of flexible inner tube (3) and are set up.

2. A tensile flexible pipe joint as claimed in claim 1, wherein: the inner diameter of the limiting snap ring (9) is larger than the diameter of the flexible inner tube (3).

3. A tensile flexible pipe joint as claimed in claim 1, wherein: the middle section of the flexible inner pipe (3) is wave-shaped.

4. A tensile flexible pipe joint as claimed in claim 1, wherein: and the inner walls of the opposite sides of the pair of limiting convex rings (10) are provided with damping cushion blocks (11).

5. A tensile flexible pipe joint as claimed in claim 1, wherein: still be equipped with corrugated pipe (12) between tensile pipe (5) and tensile pipe two (6), flexible extension spring (7) are located in corrugated pipe (12).

6. A tensile flexible pipe joint as claimed in claim 1, wherein: a telescopic reset rod (13) is also arranged in the telescopic tension spring (7).

7. A tensile flexible pipe joint as claimed in claim 1, wherein: and a sealing block (14) is also arranged between the limiting snap ring (9) and the pipe wall of the flexible inner pipe (3).