Corrugated pipe compensator for preventing deformation of gas pipeline and use method

Abstract

The invention belongs to the technical field of compensators, and particularly relates to a corrugated pipe compensator capable of preventing a gas pipeline from deforming and a using method, the corrugated pipe compensator comprises two connecting rings, a first corrugated pipe and a second corrugated pipe, the flange plate is located on the side, deviating from each other, of the two connecting rings, and a second corrugated pipe is connected between the flange plate and the adjacent connecting ring; a limiting mechanism; the two connecting rings are distributed in a mirror image mode with the first corrugated pipe as the center. The limiting mechanism comprises four first limiting assemblies distributed on the connecting ring in the circumferential direction and two second limiting assemblies symmetrically distributed on the radial outer side of the first corrugated pipe. The device has the beneficial effects that through arrangement of the limiting mechanism, the first corrugated pipe and the second corrugated pipe can be simply and conveniently disassembled, assembled and fixed; according to the utility model, the connection is firm and reliable, the complexity and required manpower during assembly are reduced, the working efficiency is greatly improved, and the maintenance and replacement by a user can be more efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of compensators, and in particular to a bellows compensator for preventing gas pipeline deformation and a use method thereof. Background Art

[0002] Bellows compensators are usually composed of bellows and its connecting components. They use the expansion and contraction properties of bellows to compensate for the axial, lateral or angular displacement of pipes, conduits or containers. This type of compensator can not only be used to compensate for the length change caused by thermal expansion and contraction, but also to reduce vibration and noise.

[0003] In the prior art, the bellows on the bellows compensator is usually connected and fixed to other components on the compensator by welding. If the bellows needs to be removed, the welding points need to be softened by heat treatment, which is troublesome. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a bellows compensator for preventing gas pipeline deformation and a method of use to solve the above problems.

[0005] The technical solution of the present invention is implemented as follows: A bellows compensator for preventing gas pipeline deformation comprises: There are two connecting rings, and a bellows is connected between the two connecting rings; The flange is located at the side of the two connecting rings which are away from each other, and a bellows 2 is connected between the flange and the adjacent connecting ring; Limiting mechanism; Among them, the two connecting rings are distributed in a mirror image with the bellows 1 as the center; Among them, the limiting mechanism includes four groups of limiting components 1 distributed circumferentially on the connecting ring, and two groups of limiting components 2 symmetrically distributed on the radial outside of the bellows 1, which are used to limit the ends of the bellows 1 and the bellows 2 on the corresponding connecting ring and flange.

[0006] Further, each connecting ring is connected with two sets of limit assemblies 1, and each set of limit assemblies 1 includes: A fixed sleeve, one end of which is fixedly mounted on the connecting ring and is arranged horizontally; The sliding sleeve is sleeved on the outside of the fixed sleeve and is slidably connected to the fixed sleeve. One end of the sliding sleeve passes through a connecting ring away from the fixed sleeve and is fixedly connected to the flange. The rack 1 is fixedly connected to the radial outer side of the fixed sleeve along the length direction of the fixed sleeve, and a sliding groove matching the rack 1 is provided on the inner side of the sliding sleeve; The first screw rod is arranged on the radial outer side of the sliding sleeve along the length of the sliding sleeve, and the first screw rod is connected and fixed to the sliding sleeve through the bearing seat; A pneumatic push rod is fixedly mounted on the connecting ring, and an output end of the pneumatic push rod is connected and fixed to the radial outer side of the sliding sleeve; The sliding block is sleeved on the screw rod 1 through a thread; A connecting rod 1, one end of which is hinged to one side outside the sliding block, and the other end of which extends to an adjacent flange; Wherein, the screw rod 1 is connected with the rack 1 through gear transmission.

[0007] Furthermore, one end of the screw rod 1 passes through the bearing seat and is fixedly connected to the bevel gear 1. The outer side of the sliding sleeve is fixedly installed with a bevel gear 2 that meshes with the bevel gear 1 through a support seat. An opening is provided on one side of the bottom of the sliding groove for one end of the bevel gear 2 to extend into and mesh with the rack 1.

[0008] Furthermore, two sets of limiter components 2 are symmetrically distributed on the upper and lower sides of the bellows 1, and each set of limiter components 2 includes: The pull rod 1 is located on the opposite sides of the two connecting rings and is arranged in an arc shape; The second pull rod is hinged to the middle part of the first pull rod; Move the rod; The fixed block is in an "L" shape and is fixedly installed on the opposite surfaces of the two connecting rings. One end of the moving rod is hinged with the end of the second pull rod, and the other end passes through the connecting ring and the fixed block in sequence and is rotatably connected with the second screw rod. The fixed block is provided with a through slot one that is adapted to the moving rod; A pull rod three, one end of which is hinged to the middle of the pull rod one, and the other end of which passes through the connecting ring and is hinged to the fixed block; The pull rod four is fixedly installed at the lower end of the pull rod three, one end of the pull rod four passes through the fixed block and is connected to the pull rod five, and the pull rod five is arranged in an arc shape; Wherein, a transmission worm gear is connected to the second screw rod through a thread sleeve; Furthermore, both ends of bellows 1 and bellows 2 are integrally connected with connecting pipe bodies, and fixed pipes for inserting the connecting pipe bodies are fixedly installed on the opposite side of the two flanges and the left and right ends of the connecting ring. The inner side of the fixed pipe is hollow cone-shaped, and two arc-shaped pressure blocks are slidably installed along the circumferential direction of the inner wall of the fixed pipe. The two arc-shaped pressure blocks form a cone structure in the fixed pipe, and a plurality of receiving grooves are opened on one side of the outer edge of the fixed pipe, and a buckle is provided in the receiving groove, and one end of the buckle is fixedly connected to the corresponding arc-shaped pressure block.

[0009] Furthermore, it also includes: The worm gear support frame is fixedly mounted on one side outside the fixed block, one end of the transmission worm gear is rotatably connected to the worm gear support frame, and the worm gear support frame is provided with a through slot 2 for the second screw rod to extend out; A worm, rotatably connected to one side of the worm gear support frame, adapted to the transmission worm gear; One end of the worm extends out of the worm gear support frame and is connected and fixed with a transmission gear, a second rack is fixedly installed on one side outside the sliding sleeve, and one end of the transmission gear is meshed with the second rack.

[0010] Furthermore, a connecting rod 1 on each set of limiting components 1 is hinged to a buckle on an arc-shaped pressing block in the corresponding flange.

[0011] Furthermore, connecting rod 2 is hinged on the side of pull rod 1 facing away from pull rod 2, connecting rod 2 is hinged to the buckle on the opposite side of the connecting ring through a ball joint, and connecting rod 3 is hinged on the side of pull rod 5 facing away from pull rod 4, connecting rod 3 is hinged to the buckle on the opposite side of the connecting ring through a ball joint.

[0012] Furthermore, a method for using a bellows compensator to prevent deformation of a gas pipeline comprises the following steps: Step 1: Take the bellows 1 and bellows 2 respectively, and insert the connecting pipe bodies at both ends of the bellows 1 and bellows 2 into the corresponding fixed pipes; Step 2: Connect the external air source to the pneumatic push rod, control the pneumatic push rod to extend, and drive the sliding sleeve to move synchronously; Step 3: When the sliding sleeve is displaced, the rack 1 drives the bevel gear 2 to rotate, and the bevel gear 2 drives the bevel gear 1 to rotate synchronously, so that the screw 1 rotates to drive the sliding block to move, thereby driving the connecting rod 1 to displace, thereby realizing the locking of the flange and the bellows 2; Step 4. When the sliding sleeve is displaced, the transmission gear is driven by rack 2, and the transmission gear drives the transmission worm wheel to rotate through the worm, thereby driving the screw 2 to move, so that the moving rod is horizontally displaced to drive the connecting rod 2 and the connecting rod 3 to move, thereby realizing the locking of the connecting ring with the bellows 1 and the bellows 2.

[0013] The beneficial effects of the present invention are: 1. Through the setting of the limit mechanism, the bellows 1 and bellows 2 can be simply and conveniently disassembled and fixed, which not only makes the connection firm and reliable, but also reduces the complexity and manpower required during assembly, greatly improves the work efficiency, and makes the user more efficient during maintenance and replacement; 2. The limiting mechanism ensures the stability of the connection between bellows 1 and bellows 2, and can effectively prevent accidental falling off due to vibration or pressure changes, thereby ensuring practical safety and stability, so that the bellows compensator can reduce the risk of failure in the use of industrial equipment, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 This is a schematic diagram of the overall structure of a compensator according to a specific embodiment of the present invention; Figure 2 Specific implementation method of the present invention Figure 1 A magnified view of part A; Figure 3 Specific implementation method of the present invention Figure 1 Enlarged view of part B.

[0016] Description of reference numerals: 1. Connecting ring; 2. Bellows 1; 3. Flange; 4. Bellows 2; 5. Fixed sleeve; 6. Sliding sleeve; 7. Rack 1; 8. Slide; 9. Screw 1; 10. Pneumatic push rod; 11. Sliding block; 12. Connecting rod 1; 13. Bevel gear 1; 14. Bevel gear 2; 15. Pull rod 1; 16. Pull rod 2; 17. Moving rod; 18. Fixed block; 19. Pull rod 3; 2 0. Pull rod four; 181. Screw rod two; 21. Drive worm gear; 22. Connecting tube body; 23. Fixed tube; 24. Arc-shaped pressure block; 25. Buckle; 26. Worm gear support frame; 27. Worm; 28. Rack two; 271. Drive gear; 201. Pull rod five; 29. ​​Connecting rod two; 30. Connecting rod three; 31. Accommodating groove; 901. Bearing seat; 902. Support seat; 81. Opening. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] Embodiment 1: like Figures 1 to 3 As shown, the present invention discloses a bellows compensator for preventing gas pipeline deformation, comprising: There are two connecting rings 1, and a bellows 2 is connected between the two connecting rings 1; The flange 3 is located at the side of the two connecting rings 1 which are away from each other, and a bellows 4 is connected between the flange 3 and the adjacent connecting ring 1; Limiting mechanism; Among them, the two connecting rings 1 are distributed in a mirror image with the bellows 1 2 as the center; Among them, the limiting mechanism includes four groups of limiting components 1 distributed circumferentially on the connecting ring 1, and two groups of limiting components 2 symmetrically distributed on the radial outside of the bellows 1 2, which are used to limit the ends of the bellows 1 2 and the bellows 2 4 on the corresponding connecting ring 1 and flange 3.

[0020] By adopting the above technical solution and setting the limit mechanism, the bellows 1 2 and the bellows 2 4 can be simply and conveniently disassembled and fixed, which not only makes the connection firm and reliable, but also reduces the complexity and manpower required during assembly, greatly improves the work efficiency, and makes the user more efficient during maintenance and replacement. In addition, the limiting mechanism ensures the stability of the connection between bellows 1 2 and bellows 2 4, and can effectively prevent accidental detachment due to vibration or pressure changes, thereby ensuring practical safety and stability, so that the bellows compensator can reduce the risk of failure in the use of industrial equipment, thereby reducing maintenance costs.

[0021] Embodiment 2: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0022] Furthermore, each connecting ring 1 is connected to two sets of limit assemblies 1, and each set of limit assemblies 1 includes: A fixed sleeve 5, one end of which is fixedly mounted on the connecting ring 1 and is arranged in a transverse direction; The sliding sleeve 6 is sleeved on the outside of the fixed sleeve 5 and is slidably connected to the fixed sleeve 5. One end of the sliding sleeve 6 passes through the connecting ring 1 away from the fixed sleeve 5 and is fixedly connected to the flange 3. A rack 7 is fixedly connected to the radial outer side of the fixed sleeve 5 along the length direction of the fixed sleeve 5, and a sliding groove 8 matching with the rack 7 is provided on the inner side of the sliding sleeve 6; The screw rod 9 is arranged along the length of the sliding sleeve 6 and on the radial outer side of the sliding sleeve 6. The screw rod 9 is connected and fixed to the sliding sleeve 6 through the bearing seat 901. The pneumatic push rod 10 is fixedly mounted on the connecting ring 1, and the output end of the pneumatic push rod 10 is connected and fixed to the radial outer side of the sliding sleeve 6; The sliding block 11 is sleeved on the screw rod 9 through a thread; A connecting rod 12, one end of which is hinged to one side outside the sliding block 11, and the other end of which extends toward the adjacent flange 3; Among them, the screw rod 9 and the rack 7 are connected through gear transmission.

[0023] By adopting the above technical solution, the fixed sleeve provides auxiliary support for the sliding sleeve 6. When the sliding sleeve 6 is displaced, the rack 17 drives the bevel gear 2 14 to rotate, and then the bevel gear 14 drives the bevel gear 13 to rotate synchronously, so that the screw 19 rotates to drive the sliding block 11 to move, so as to drive the connecting rod 12 to displace, so that the connecting rod 12 acts on the flange 3, so as to realize the locking of the flange 3 and the bellows 2 4; In addition, the pneumatic push rod 10 is used as the power source, which has a simple structure and low maintenance cost, does not rely on a complex electronic control system, and can provide a large torque to meet the power transmission requirements of the limit mechanism, and will not produce sparks or overheating problems, and has a good use effect.

[0024] Embodiment three: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0025] Furthermore, one end of the screw rod 9 passes through the bearing seat 901 and is fixedly connected to the bevel gear 13. A bevel gear 14 meshing with the bevel gear 13 is fixedly installed on the outer side of the sliding sleeve 6 through the support seat 902. An opening 81 is provided on one side of the bottom of the sliding groove 8 for one end of the bevel gear 14 to extend into and mesh with the rack 7.

[0026] By adopting the above technical solution, the transmission structures are simple to coordinate and the power transmission is stable and reliable. It is not easy to get stuck and damaged, and the use effect is good.

[0027] Embodiment 4: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0028] Furthermore, two sets of limiter components 2 are symmetrically distributed on the upper and lower sides of the bellows 1 2, and each set of limiter components 2 includes: A pull rod 15 is located on opposite sides of the two connecting rings 1 and is arranged in an arc shape; Pull rod 2 16, hinged to the middle of pull rod 1 15; Moving rod 17; The fixed block 18 is in an "L" shape and is fixedly mounted on the opposite surfaces of the two connecting rings 1. One end of the moving rod 17 is hinged to the end of the second pull rod 16, and the other end passes through the connecting ring 1 and the fixed block 18 in sequence and is rotatably connected to the second screw rod 181. The fixed block 18 is provided with a through slot 1 (not shown in the figure) adapted to the moving rod 17; A pull rod 3 19, one end of which is hinged to the middle of the pull rod 1 15, and the other end of which passes through the connecting ring 1 and is hinged to the fixing block 18; The pull rod 4 20 is fixedly mounted on the lower end of the pull rod 3 19. One end of the pull rod 4 20 passes through the fixed block 18 and is connected to the pull rod 5 201. The pull rod 5 201 is arranged in an arc shape. Among them, the second screw rod 181 is connected with a transmission worm wheel 21 through a thread sleeve; In this solution, the pull rod 3 19 is located below the moving rod 17. Specifically, the hinge point of the pull rod 3 19 and the pull rod 1 15 intersects with the hinge point of the pull rod 2 16 and the pull rod 1 15. The hinge point of the pull rod 3 19 and the fixed block 18 is located below the moving rod 17. By adopting the above technical solution, when the movable rod 17 pulls the pull rod 2 16 toward the middle of the compensator, the pull rod 3 19 is lifted upward with the hinge point on the fixed block 18 as the rotation center, thereby driving the connecting rod 2 29 on the pull rod 1 15 and the connecting rod 3 30 on the pull rod 5 201 to pull the arc-shaped pressure blocks 24 on both sides of the connecting ring 1 to lock the connecting tube body 22.

[0029] Embodiment five: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0030] Furthermore, both ends of the bellows 1 2 and the bellows 2 4 are integrally connected with a connecting pipe body 22, and the opposite side of the two flanges 3 and the left and right ends of the connecting ring 1 are fixedly installed with a fixing pipe 23 for inserting the connecting pipe body 22, the inner side of the fixing pipe 23 is hollow frustum, and two arc-shaped pressure blocks 24 are circumferentially slidably installed along the inner wall of the fixing pipe 23, the two arc-shaped pressure blocks 24 form a frustum structure in the fixing pipe 23, and a plurality of receiving grooves 31 are opened on one side of the outer edge of the fixing pipe 23, and a buckle 25 is provided in the receiving groove 31, and one end of the buckle 25 is fixedly connected to the corresponding arc-shaped pressure block 24.

[0031] In this embodiment, a sealing strip (not shown in the figure) is glued to the edge of the arc-shaped pressing block 24; In this solution, six receiving grooves 31 are provided and are distributed at intervals in the circumferential direction, and each arc-shaped pressing block 24 corresponds to three receiving grooves 31 .

[0032] By adopting the above technical solution, when the connecting tube body 22 is inserted into the fixed tube 23, the arc-shaped pressure block 24 on the flange 3 is pulled by the connecting rod 12 through the buckle 25, so that the arc-shaped pressure block 24 acts on the inner wall of the fixed tube 23, generating an extrusion force acting on the outer periphery of the fixed tube 23, so that the connecting tube body 22 can be firmly locked in the fixed tube 23.

[0033] Embodiment six: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0034] Furthermore, it also includes: The worm gear support frame 26 is fixedly mounted on one side of the fixed block 18, one end of the transmission worm gear 21 is rotatably connected to the worm gear support frame 26, and the worm gear support frame 26 is provided with a through slot 2 (not shown in the figure) for the second screw rod 181 to extend out; The worm 27 is rotatably connected to one side of the worm gear support frame 26 to adapt to the transmission worm gear 21; One end of the worm 27 extends out of the worm gear support frame 26 and is connected and fixed with a transmission gear 271 . A second rack 28 is fixedly installed on one side of the sliding sleeve 6 . One end of the transmission gear 271 meshes with the second rack 28 .

[0035] By adopting the above technical solution, when the sliding sleeve 6 is displaced, the transmission gear 271 is driven by the rack 28, and the transmission gear 271 drives the transmission worm wheel 21 to rotate through the worm 27, thereby driving the screw 2 181 to move, so that the moving rod 17 is horizontally displaced to drive the connecting rod 29 and the connecting rod 3 30 to move, thereby realizing the locking of the connecting ring 1 with the bellows 1 2 and the bellows 2 4.

[0036] Embodiment seven: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0037] Furthermore, the connecting rod 12 on each set of limiting components 1 is hinged to a buckle 25 on an arc-shaped pressing block 24 in the corresponding flange 3 .

[0038] In the present solution, specifically, the two connecting rings 1 are distributed on the left and right sides, and two sets of limiting components are respectively provided on the connecting rings 1 on the left and right sides. The limiting component 1 on the connecting ring on the left side is connected to the buckle on the flange 3 on the right side, and the limiting component 1 on the connecting ring 1 on the right side is connected to the buckle on the flange 3 on the left side.

[0039] By adopting the above technical solution, each flange 3 corresponds to two sets of limiting components that apply force to the arc-shaped pressure blocks 24 on the flange 3 to form an annular locking structure, so that the connecting pipe body 22 can be firmly matched with the fixing pipe 23 and is not easy to loosen.

[0040] Embodiment eight: This embodiment provides a bellows compensator for preventing deformation of a gas pipeline. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0041] Furthermore, a connecting rod 29 is hinged on the side of the pull rod 15 facing away from the pull rod 2 16, and the connecting rod 29 is hinged to the buckle 25 on the opposite side of the connecting ring 1 through a ball joint. A connecting rod 3 30 is hinged on the side of the pull rod 5 201 facing away from the pull rod 4 20, and the connecting rod 3 30 is hinged to the buckle 25 on the opposite side of the connecting ring 1 through a ball joint.

[0042] In the present embodiment, specifically, one group of limit components 2 is connected to the upper edges of the two connecting rings, and is used to correspond to the arc-shaped pressure block 24 adjacent to the upper edge of the connecting ring 1; one group of limit components 2 is connected to the lower edges of the two connecting rings 1, and is used to correspond to the arc-shaped pressure block 24 adjacent to the lower edge of the connecting ring 1.

[0043] By adopting the above technical solution, through the arrangement of two sets of limit components 2, the arc-shaped pressing block 24 on the connecting ring 1 can form an annular locking structure in cooperation with the limit component 1, which is firmly matched and not easy to loosen.

[0044] Embodiment nine: This embodiment provides a method for using a bellows compensator to prevent deformation of a gas pipeline. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features.

[0045] Further, the following steps are included: Step 1: Take the bellows 1 2 and the bellows 2 4 respectively, and insert the connecting tube bodies 22 at both ends of the bellows 1 2 and the bellows 2 4 into the corresponding fixed tubes 23; Step 2: Connect the external air source to the pneumatic push rod 10, control the pneumatic push rod 10 to extend, and drive the sliding sleeve 6 to move synchronously; Step 3, when the sliding sleeve 6 is displaced, the rack 1 7 drives the bevel gear 2 14 to rotate, and then the bevel gear 14 drives the bevel gear 13 to rotate synchronously, so that the screw 1 9 rotates to drive the sliding block 11 to move, thereby driving the connecting rod 1 12 to displace, so as to achieve the locking of the flange 3 and the bellows 2 4; Step 4. When the sliding sleeve 6 is displaced, the transmission gear 271 is driven by the rack 28, and the transmission gear 271 drives the transmission worm wheel 21 to rotate through the worm 27, thereby driving the screw 2 181 to move, so that the moving rod 17 is horizontally displaced to drive the connecting rod 29 and the connecting rod 3 30 to move, thereby realizing the locking of the connecting ring 1 with the bellows 1 2 and the bellows 2 4.

[0046] By adopting the above technical solution, the structure is simple and easy to use, which effectively reduces the complexity and manpower required for the assembly of the bellows. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bellows compensator for preventing gas pipeline deformation, characterized in that: include: Two connecting rings (1) are provided, and a bellows 1 (2) is connected between the two connecting rings (1); The flange (3) is located on the side of the two connecting rings (1) facing away from each other, and a second bellows (4) is connected between the flange (3) and the adjacent connecting ring (1); Limiting mechanism; The two connecting rings (1) are distributed in a mirror image with the bellows 1 (2) as the center; The limiting mechanism comprises four groups of limiting components one distributed circumferentially on the connecting ring (1), and two groups of limiting components two distributed symmetrically on the radial outer side of the bellows one (2), for limiting the ends of the bellows one (2) and the bellows two (4) on the corresponding connecting ring (1) and the flange (3).

2. A bellows compensator for preventing gas pipeline deformation according to claim 1, characterized in that: Each connecting ring (1) is connected to two sets of limiter components 1, and each set of limiter components 1 includes: A fixed sleeve (5), one end of which is fixedly mounted on the connecting ring (1) and is arranged in a transverse direction; A sliding sleeve (6) is sleeved on the outside of the fixed sleeve (5) and is slidably connected to the fixed sleeve (5); one end of the sliding sleeve (6) passes through a connecting ring (1) away from the fixed sleeve (5) and is connected and fixed to the flange (3); A rack (7) is fixedly connected to the radial outer side of the fixed sleeve (5) along the length direction of the fixed sleeve (5), and a sliding groove (8) adapted to the rack (7) is provided on the inner side of the sliding sleeve (6); A screw rod (9) is arranged radially outside the sliding sleeve (6) along the length of the sliding sleeve (6), and the screw rod (9) is connected and fixed to the sliding sleeve (6) via a bearing seat (901); A pneumatic push rod (10) is fixedly mounted on the connecting ring (1), and an output end of the pneumatic push rod (10) is connected and fixed to the radial outer side of the sliding sleeve (6); The sliding block (11) is sleeved on the screw rod 1 (9) through a thread; A connecting rod (12), one end of the connecting rod (12) is hinged to an outer side of the sliding block (11), and the other end of the connecting rod (12) extends toward an adjacent flange (3); Wherein, the screw rod 1 (9) and the rack 1 (7) are connected via a gear transmission.

3. A bellows compensator for preventing gas pipeline deformation according to claim 2, characterized in that: One end of the screw rod 1 (9) passes through the bearing seat (901) and is fixedly connected to the bevel gear 1 (13); a bevel gear 2 (14) meshing with the bevel gear 1 (13) is fixedly installed on the outer side of the sliding sleeve (6) through the support seat (902); and an opening (81) is provided through one side of the bottom of the sliding groove (8) for one end of the bevel gear 2 (14) to extend into and mesh with the rack 1 (7).

4. The bellows compensator for preventing gas pipeline deformation according to claim 1, characterized in that: The two sets of limiter components 2 are symmetrically distributed on the upper and lower sides of the bellows 1 (2), and each set of limiter components 2 includes: A pull rod (15) is located on opposite sides of the two connecting rings (1) and is arranged in an arc shape; A second pull rod (16) is hinged to the middle of the first pull rod (15); Moving rod (17); The fixed block (18) is in an "L" shape and is fixedly mounted on opposite surfaces of the two connecting rings (1). One end of the moving rod (17) is hinged to the end of the second pull rod (16), and the other end passes through the connecting ring (1) and the fixed block (18) in sequence and is rotatably connected to the second screw rod (181). The fixed block (18) is provided with a through groove (1) that matches the moving rod (17); A pull rod three (19), one end of which is hinged to the middle of the pull rod one (15), and the other end of which passes through the connecting ring (1) and is hinged to the fixed block (18); The pull rod four (20) is fixedly mounted on the lower end of the pull rod three (19), one end of the pull rod four (20) passes through the fixed block (18) and is connected to the pull rod five (201), and the pull rod five (201) is arranged in an arc shape; The second screw rod (181) is sleeved with a transmission worm wheel (21) via a thread.

5. A bellows compensator for preventing gas pipeline deformation according to claim 4, characterized in that: Both ends of the bellows 1 (2) and the bellows 2 (4) are integrally connected with a connecting pipe body (22); a fixing pipe (23) for inserting the connecting pipe body (22) is fixedly installed on the opposite side of the two flanges (3) and the left and right ends of the connecting ring (1); the inner side of the fixing pipe (23) is in the shape of a hollow truncated cone, and two arc-shaped pressing blocks (24) are slidably installed along the circumferential direction of the inner wall of the fixing pipe (23); the two arc-shaped pressing blocks (24) form a truncated cone structure in the fixing pipe (23); a plurality of receiving grooves (31) are opened on one side of the outer edge of the fixing pipe (23); buckles (25) are arranged in the receiving grooves (31); one end of the buckle (25) is fixedly connected to the corresponding arc-shaped pressing block (24).

6. A bellows compensator for preventing gas pipeline deformation according to claim 4, characterized in that: Also includes: A worm gear support frame (26) is fixedly mounted on one side outside the fixed block (18); one end of the transmission worm gear (21) is rotatably connected to the worm gear support frame (26); and a through slot (2) is provided on the worm gear support frame (26) for the second screw rod (181) to extend out; A worm (27) is rotatably connected to one side of the worm gear support frame (26) to fit the transmission worm gear (21); One end of the worm (27) extends out of the worm wheel support frame (26) and is connected and fixed with a transmission gear (271); a second rack (28) is fixedly mounted on one side of the sliding sleeve (6); and one end of the transmission gear (271) is meshed with the second rack (28).

7. The bellows compensator for preventing gas pipeline deformation according to claim 5, characterized in that: A connecting rod (12) on each set of limiting components is hingedly connected to a buckle (25) on an arc-shaped pressing block (24) in the corresponding flange (3).

8. The bellows compensator for preventing gas pipeline deformation according to claim 5, characterized in that: The side of the pull rod one (15) facing away from the pull rod two (16) is hinged with a connecting rod two (29), and the connecting rod two (29) is hinged with the buckle (25) on the opposite side of the connecting ring (1) through a ball joint. The side of the pull rod five (201) facing away from the pull rod four (20) is hinged with a connecting rod three (30), and the connecting rod three (30) is hinged with the buckle (25) on the opposite side of the connecting ring (1) through a ball joint.

9. A method for using the bellows compensator for preventing gas pipeline deformation according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: Take the bellows 1 (2) and the bellows 2 (4) respectively, and insert the connecting tube bodies (22) at both ends of the bellows 1 (2) and the bellows 2 (4) into the corresponding fixed tubes (23); Step 2: Connect an external air source to the pneumatic push rod (10), control the pneumatic push rod (10) to extend, and drive the sliding sleeve (6) to move synchronously; Step 3: When the sliding sleeve (6) is displaced, the rack (7) drives the bevel gear (14) to rotate, and the bevel gear (13) is driven to rotate synchronously by the bevel gear (14), so that the screw (9) rotates to drive the sliding block (11) to move, thereby driving the connecting rod (12) to displace, thereby achieving the locking of the flange (3) and the bellows (4); Step 4: When the sliding sleeve (6) is displaced, the transmission gear (271) is driven by the second rack (28), and the transmission gear (271) drives the transmission worm wheel (21) to rotate through the worm (27), thereby driving the second screw rod (181) to move, so that the moving rod (17) is displaced horizontally to drive the second connecting rod (29) and the third connecting rod (30) to move, thereby achieving the locking of the connecting ring (1) with the first bellows (2) and the second bellows (4).

Images