Sleeve corrugated compensator

Abstract

The utility model relates to the technical field of industrial manufacturing, and provides a sleeve corrugated compensator which comprises a corrugated pipe, the outer surface of the corrugated pipe is fixedly sleeved with a second fixing block, the outer surface of the corrugated pipe is fixedly connected with two first fixing blocks, the outer surfaces of the two first fixing blocks are fixedly connected with a plurality of positioning blocks, and the outer surfaces of the two first fixing blocks are fixedly connected with a plurality of second fixing blocks. The outer surfaces of the multiple positioning blocks are fixedly connected with positioning rods, the outer surfaces of the multiple positioning rods are movably sleeved with cams, the multiple cams are averagely divided into four groups, connecting rods are movably embedded in the inner surfaces of the four groups of cams, and the outer surfaces of the multiple connecting rods are fixedly connected with sliding blocks; sliding grooves are formed in the sides, close to the multiple sliding blocks, of the second fixing blocks, corrugated pipe fatigue caused by long-term vibration is avoided, metal fatigue is accelerated, the service life of the corrugated pipe is prolonged, meanwhile, the situation that when a backflow preventing device is jammed, the backflow preventing device cannot be automatically opened is avoided, system operation can be temporarily recovered by rotating a rotary disc, and production is temporarily guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial manufacturing, in particular to a sleeve corrugated compensator. Background Art

[0002] Sleeve bellows compensators are commonly used in pipeline systems. Their main function is to absorb or compensate for the deformation and displacement of the pipeline through the corrugated structure when the pipeline is subjected to thermal expansion, contraction or vibration, so as to protect the pipeline system from damage. It can reduce the stress concentration of the pipeline system, extend the service life of the pipeline and related equipment, and improve the safety and reliability of the system.

[0003] In the prior art, such as the Chinese patent number: CN220488605U, "a sleeve bellows compensator", includes a core tube, an outer shield is provided at the right end of the core tube, an end plate is fixedly connected to the left end of the outer shield, a first ring plate is provided at the right end of the end plate, the upper end of the first ring plate is fixedly connected to the inner wall of the outer shield, the lower end of the first ring plate is fixedly connected to the bellows, the inner wall of the bellows is fixedly connected to the surface of the core tube, the surface of the core tube is fixedly connected to an anti-slip ring, and a sleeve compensator is provided at the upper end of the anti-slip ring. The utility model is provided with a core tube, specifically, a high-temperature medium is transported through the core tube. When the high-temperature medium is transported to the bellows, the bellows expansion joint expands due to the high temperature, and can adapt to a larger axial displacement, giving full play to the sealing effect of the bellows. The sleeve compensator connected in series with the right end of the core tube cooperates with the bellows to play a double sealing role, improves the sealing effect, and is not easy to leak.

[0004] Although the above scheme has the above advantages, the disadvantage of the above scheme is that the bellows compensator is used to absorb the displacement caused by thermal expansion and contraction in the pipeline system. However, due to the flow of fluid inside the pipeline, external vibration sources or the dynamic characteristics of the pipeline system itself, vibration may occur. Long-term vibration will cause fatigue of the bellows, accelerate metal fatigue, and shorten the service life of the compensator. At the same time, most of the bellows compensators have anti-backflow structures inside. When it is necessary to forcibly restore the system operation and open the closed anti-backflow structure in time, the anti-backflow structure may become stuck, resulting in the bellows compensator being unable to be opened in time when it is closed, so that the system cannot be restored to normal in time. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the bellows compensator is used in the pipeline system to absorb the displacement caused by thermal expansion and contraction, but vibration may be generated due to the flow of fluid inside the pipeline, external vibration source or the dynamic characteristics of the pipeline system itself. Long-term vibration will cause fatigue of the bellows, accelerate metal fatigue, and shorten the service life of the compensator. At the same time, most of the bellows compensators have an anti-backflow structure inside. When it is necessary to forcibly restore the system operation and open the closed anti-backflow structure in time, the anti-backflow structure may become stuck, resulting in the bellows compensator being unable to be opened in time when it is closed, so that the system cannot be restored to a normal state in time.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sleeve bellows compensator, comprising: a bellows, the outer surface of the bellows is fixedly sleeved with a fixing block 2, the outer surface of the bellows is fixedly connected to two fixing blocks 1, the outer surfaces of the two fixing blocks 1 are fixedly connected to a plurality of positioning blocks, the outer surfaces of the plurality of positioning blocks are fixedly connected to positioning rods, the outer surfaces of the plurality of positioning rods are movably sleeved with cams, the plurality of cams are evenly divided into four groups, the inner surfaces of the four groups of cams are movably embedded with connecting rods, the outer surfaces of the plurality of connecting rods are fixedly connected with sliders, the fixed block 2 is provided with a sliding groove on one side close to the plurality of sliders, and the plurality of sliders are movably embedded in the inner surfaces of the plurality of sliding grooves, thereby avoiding long-term vibration causing fatigue of the bellows and accelerating metal fatigue.

[0007] As a preferred embodiment, a notch is provided on the inner surface of one of the fixed blocks 1, and two positioning columns and a plurality of springs 2 are fixedly connected to the inner wall of the notch. The plurality of springs 2 are evenly divided into two groups, and baffles are fixedly connected to the outer surfaces of the two groups of springs 2, so as to avoid the anti-backflow device from getting stuck and being unable to open automatically, and the system operation can be temporarily restored by rotating the turntable.

[0008] As a preferred embodiment, the outer surfaces of the plurality of sliders are fixedly connected with springs 1, and the plurality of springs 1 are fixedly connected to the inner walls of the plurality of slide grooves, and springs 1 can provide power for the reverse movement of the sliders.

[0009] As a preferred embodiment, the outer surface of another of the fixing blocks is fixedly connected with a plurality of fixing feet, and the inner surfaces of the plurality of fixing feet are threadedly connected with bolts, and the cooperation between the bolts and the fixing feet facilitates the installation of the corrugated pipe on the pipeline.

[0010] As a preferred embodiment, the two positioning posts are movably embedded in the inner surfaces of the two baffles, and the inner surfaces of the two baffles are movably embedded with double-headed threaded rods, and the baffles can change the flow speed of the working medium inside the bellows.

[0011] As a preferred embodiment, the double-headed threaded rod is movably embedded in the inner surface of one of the fixed blocks, and a turntable is fixedly connected to one side of the double-headed threaded rod close to the outside of one of the fixed blocks, and the turntable can provide power for the reverse rotation of the double-headed threaded rod.

[0012] As a preferred embodiment, the double-headed threaded rod is threadedly connected to two nuts on one side near the inside of one of the fixed blocks, and the outer surfaces of the two nuts are fixedly connected to two limit rods. The limit rods can drive the limit ring to slide on the surface of the positioning column under the drive of the nuts.

[0013] As a preferred embodiment, the outer surfaces of the plurality of limit rods are fixedly connected to limit rings, and the plurality of limit rings are movably sleeved on the outer surfaces of the two positioning columns. The positioning columns can limit the movement trajectories of the limit rings and the baffle, thereby avoiding derailment of the limit rings and the baffle.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. In the utility model, when the bellows absorbs thermal expansion and contraction in the pipeline system to generate displacement, the two fixed blocks 1 will move to both sides, the two fixed blocks 1 drive the multiple positioning rods to move through the multiple positioning blocks, the multiple positioning rods drive the connecting rods to move through the multiple cams, the multiple connecting rods drive the multiple sliders to move on the inner surfaces of the multiple slide grooves on the fixed block 2, and squeeze the multiple springs 1, so that the multiple springs 1 obtain elastic potential energy, when the displacement generated by absorbing thermal expansion and contraction is reduced, the multiple springs 1 will release the elastic potential energy, so that the multiple sliders move to the initial position, and then the two fixed blocks 1 move to the initial position, which plays a buffering role, avoids the bellows fatigue caused by long-term vibration, accelerates metal fatigue, and improves the service life of the bellows.

[0016] The cam is engaged with the two springs and the two nuts are engaged, and the cam is engaged with the two nuts, and the cam is engaged with the two nuts, and the two nuts are ... BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main structure of a sleeve corrugated compensator provided by the utility model;

[0018] Figure 2 A schematic diagram of the position structure of the threaded rod of a sleeve corrugated compensator provided by the utility model;

[0019] Figure 3 A sleeve corrugated compensator provided by the utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 4 A sleeve corrugated compensator provided by the utility model Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Legend:

[0022] 1. Bellows; 2. Fixed block 2; 3. Fixed block 1; 4. Positioning block; 5. Positioning rod; 6. Cam; 7. Connecting rod; 8. Slider; 9. Slide; 10. Spring 1; 11. Notch; 12. Spring 2; 13. Positioning column; 14. Baffle; 15. Threaded rod; 16. Turntable; 17. Nut; 18. Limit rod; 19. Limit ring; 20. Fixed foot; 21. Bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution: a sleeve bellows compensator, comprising: a bellows 1, a fixed block 2 is fixedly sleeved on the outer surface of the bellows 1, two fixed blocks 3 are fixedly connected to the outer surface of the bellows 1, a plurality of positioning blocks 4 are fixedly connected to the outer surfaces of the two fixed blocks 3, a plurality of positioning blocks 4 are fixedly connected to the outer surfaces of the plurality of positioning blocks 4, a plurality of positioning rods 5 are fixedly connected to the outer surfaces of the plurality of positioning rods 5, a cam 6 is movably sleeved on the outer surfaces of the plurality of cams 6, the plurality of cams 6 are evenly divided into four groups, a connecting rod 7 is movably embedded in the inner surfaces of the four groups of cams 6, a plurality of connecting rods 7 are fixedly connected to the outer surfaces of the plurality of connecting rods 7, a sliding groove 9 is opened on the side of the fixed block 2 close to the plurality of sliding blocks 8, and a plurality of sliding blocks 8 are movably embedded in the inner surfaces of the plurality of sliding grooves 9, so as to avoid fatigue of the bellows 1 caused by long-term vibration, accelerate metal fatigue, and improve the service life of the bellows 1.

[0025] like Figure 1-4 As shown, a notch 11 is formed on the inner surface of one of the fixed blocks 3, and two positioning columns 13 and a plurality of springs 12 are fixedly connected to the inner wall of the notch 11. The plurality of springs 12 are evenly divided into two groups, and baffles 14 are fixedly connected to the outer surfaces of the two groups of springs 12, so as to avoid the jamming of the anti-backflow device and the inability to open automatically. The system operation can be temporarily restored by rotating the turntable 16 to temporarily ensure production.

[0026] like Figure 1-4 As shown, the outer surfaces of the multiple sliders 8 are fixedly connected with springs 10, and the multiple springs 10 are fixedly connected to the inner walls of the multiple slide grooves 9. The springs 10 can provide power for the reverse movement of the sliders 8, so that the sliders 8 move in the reverse direction.

[0027] like Figure 1-4 As shown, the outer surface of another fixing block 3 is fixedly connected with multiple fixing feet 20, and the inner surfaces of the multiple fixing feet 20 are all threadedly connected with bolts 21. The cooperation between the bolts 21 and the fixing feet 20 facilitates the installation of the corrugated pipe 1 on the pipeline.

[0028] like Figure 1-4 As shown, two positioning columns 13 are movably embedded in the inner surfaces of two baffles 14, and double-headed threaded rods 15 are movably embedded in the inner surfaces of the two baffles 14. The baffles 14 can change the flow speed of the working medium inside the bellows 1 to achieve the closing and opening of the bellows 1.

[0029] like Figure 1-4 As shown, the double-headed threaded rod 15 is movably embedded in the inner surface of one of the fixed blocks 3, and a turntable 16 is fixedly connected to one side of the double-headed threaded rod 15 close to the outside of one of the fixed blocks 3. The turntable 16 can provide power for the reverse rotation of the double-headed threaded rod 15, so that the double-headed threaded rod 15 moves in the reverse direction.

[0030] like Figure 1-4 As shown, the double-headed threaded rod 15 is threadedly connected to two nuts 17 on one side near the inside of one of the fixed blocks 3, and the outer surfaces of the two nuts 17 are fixedly connected to two limit rods 18. The limit rods 18 can be driven by the nuts 17 to drive the limit rings 19 to slide on the surface of the positioning column 13 and impose certain restrictions on the nuts 17.

[0031] like Figure 1-4 As shown, the outer surfaces of multiple limit rods 18 are fixedly connected to limit rings 19, and multiple limit rings 19 are movably mounted on the outer surfaces of two positioning columns 13. The positioning columns 13 can limit the movement trajectory of the limit rings 19 and the baffle 14, thereby avoiding derailment of the limit rings 19 and the baffle 14 and affecting their use.

[0032] Working principle: This equipment is a sleeve bellows compensator. When the bellows 1 absorbs thermal expansion and contraction in the pipeline system to generate displacement, the two fixed blocks 3 will move to both sides. The two fixed blocks 3 drive the multiple positioning rods 5 to move through the multiple positioning blocks 4. The multiple positioning rods 5 drive the connecting rods 7 to move through the multiple cams 6. The multiple connecting rods 7 drive the multiple sliders 8 to move on the inner surfaces of the multiple slide grooves 9 on the fixed blocks 2, and squeeze the multiple springs 10, so that the multiple springs 10 obtain elastic potential energy. When the displacement generated by absorbing thermal expansion and contraction is reduced, the multiple springs 10 will release the elastic potential energy, so that the multiple sliders 8 move to the initial position, and then the two fixed blocks 3 move to the initial position, which plays a buffering role, avoids the fatigue of the bellows 1 caused by long-term vibration, accelerates metal fatigue, and increases the service life of the bellows 1. When the backflow prevention device is stuck and it is necessary to forcibly open the backflow prevention device, manually rotate the turntable 16. 16 drives the double-headed threaded rod 15 to rotate, and the double-headed threaded rod 15 drives the two nuts 17 to move up and down, and multiple limit rings 19 and limit rods 18 can position the two nuts 17, and multiple limit rings 19 slide on the outer surfaces of the two positioning columns 13, and the two nuts 17 drive the two baffles 14 to move up and down on the inner surface of the notch 11, so that the bellows 1 is opened, and multiple springs 12 are squeezed, so that the multiple springs 12 obtain elastic potential energy. When the flow rate of the medium inside the bellows 1 is reduced and backflow may occur, the turntable 16 can be rotated in the opposite direction so that the two nuts 17 no longer restrict the two baffles 14. At this time, the multiple springs 12 release the elastic potential energy, so that the two baffles 14 are closed to prevent backflow. The fixing feet 20 and the bolts 21 facilitate the installation of the bellows 1 on the pipeline, avoiding the jamming of the anti-backflow device and the inability to open automatically. The system operation can be temporarily restored by rotating the turntable 16 to temporarily ensure production.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sleeve corrugated compensator, characterized in that: include: A bellows (1), wherein the outer surface of the bellows (1) is fixedly sleeved with a fixing block 2 (2), the outer surface of the bellows (1) is fixedly connected to two fixing blocks 1 (3), the outer surfaces of the two fixing blocks 1 (3) are fixedly connected to a plurality of positioning blocks (4), the outer surfaces of the plurality of positioning blocks (4) are fixedly connected to positioning rods (5), the outer surfaces of the plurality of positioning rods (5) are movably sleeved with cams (6), the plurality of cams (6) are evenly divided into four groups, the inner surfaces of the four groups of cams (6) are movably embedded with connecting rods (7), the outer surfaces of the plurality of connecting rods (7) are fixedly connected to sliders (8), the fixing block 2 (2) is provided with a sliding groove (9) on one side close to the plurality of sliders (8), and the plurality of sliders (8) are movably embedded in the inner surfaces of the plurality of sliding grooves (9).

2. A sleeve corrugated compensator according to claim 1, characterized in that: A notch (11) is provided on the inner surface of one of the fixing blocks (3); two positioning columns (13) and a plurality of springs (12) are fixedly connected to the inner wall of the notch (11); the plurality of springs (12) are evenly divided into two groups; and baffles (14) are fixedly connected to the outer surfaces of the two groups of springs (12).

3. A sleeve corrugated compensator according to claim 1, characterized in that: The outer surfaces of the plurality of slide blocks (8) are all fixedly connected to springs one (10), and the plurality of springs one (10) are fixedly connected to the inner walls of the plurality of slide grooves (9).

4. The sleeve corrugated compensator according to claim 1, characterized in that: The outer surface of another of the fixing blocks 1 (3) is fixedly connected to a plurality of fixing legs (20), and the inner surfaces of the plurality of fixing legs (20) are all threadedly connected to bolts (21).

5. The sleeve corrugated compensator according to claim 2, characterized in that: The two positioning columns (13) are movably embedded in the inner surfaces of the two baffles (14), and the inner surfaces of the two baffles (14) are movably embedded with double-headed threaded rods (15).

6. A sleeve corrugated compensator according to claim 5, characterized in that: The double-ended threaded rod (15) is movably embedded in the inner surface of one of the fixed blocks (3), and a rotating disk (16) is fixedly connected to one side of the double-ended threaded rod (15) close to the outside of one of the fixed blocks (3).

7. The sleeve corrugated compensator according to claim 5, characterized in that: One side of the double-ended threaded rod (15) close to the interior of one of the fixing blocks (3) is threadedly connected to two nuts (17), and the outer surfaces of the two nuts (17) are fixedly connected to two limiting rods (18).

8. A sleeve corrugated compensator according to claim 7, characterized in that: The outer surfaces of the plurality of limit rods (18) are all fixedly connected to limit rings (19), and the plurality of limit rings (19) are movably sleeved on the outer surfaces of the two positioning columns (13).

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