High-pressure-resistant self-sealing rotary compensator

Abstract

The utility model provides a high-pressure-resistant self-sealing rotary compensator, which belongs to the technical field of pipeline butt joint construction and comprises a compensation pipe, a corrugated pipe is embedded in the compensation pipe, butt joints are rotatably arranged at two ends of the compensation pipe, a sealing component is arranged on the inner wall of a sealing ring seat, and stress stop levers are rotatably arranged on flange plates at two ends of the corrugated pipe. The free ends of the two stress blocking rods are connected through an elastic piece, a compensation amount adjusting assembly used for locking the angles of the stress blocking rods is arranged on a flange plate of the corrugated pipe, when thermal expansion is conducted in the compensation pipe, generated thermal stress is applied to the inner wall of the corrugated pipe, and at the moment, buffering force expanding outwards is increased through elastic deformation of the elastic piece; the outer wall of the corrugated pipe is prevented from being damaged, so that the corrugated pipe is protected, the stress blocking rod is locked at the corresponding angle through the compensation amount adjusting assembly, the stability of the corrugated pipe in the transportation process is guaranteed, and the corrugated pipe is prevented from deforming in the transportation process.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline butt joint construction, in particular to a high-pressure resistant self-sealing rotary compensator. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors, and valves for transporting gases, liquids, or fluids containing solid particles. Typically, the fluid is pressurized by blowers, compressors, pumps, and boilers, flowing from high-pressure to low-pressure areas within the pipeline. Alternatively, the fluid's own pressure or gravity can be used for transport. Pipelines have a wide range of uses, primarily in water supply, drainage, heating, gas supply, long-distance oil and natural gas transportation, agricultural irrigation, hydraulic engineering, and various industrial installations. During pipeline installation, compensators are used to seal the pipes together to ensure a tight seal.

[0003] The related technology (publication number: CN220770481U) discloses a high-pressure resistant self-sealing rotary compensator, and the disclosed technical solution is: the gear is driven to rotate by a knob, and the rack is displaced by the rotation of the gear, and then the rack is driven by the synchronous drive mounting shaft to move inside the spoke, thereby achieving flexible control of the entire device, enhancing the practical performance of the entire device, improving the fixed connection length at both ends of the existing rotary compensator, better adapting to pipes with different spacings, and improving the efficiency of the compensator.

[0004] In the above-mentioned disclosed technical solutions, the following problems were found in the relevant technologies: during the process of laying the pipeline, in order to improve efficiency, it will be laid from both sides to the middle. Due to errors in the construction process, the pipelines on both sides cannot be docked through the same pipeline, and the docking ports on both sides are also misaligned with each other. At this time, a rotary compensator is required for adjustment and installation to ensure the sealing of the pipeline docking. For this purpose, we have proposed a new type of high-pressure resistant self-sealing rotary compensator.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To solve the problem of pipeline rotation compensation in the above-mentioned prior art, this utility model provides a high-pressure resistant self-sealing rotary compensator. It adopts a rotary compensation joint structure combined with a pipeline expansion protection structure to achieve the effect of facilitating installation and improving stability. Its specific technical solution is as follows:

[0007] A high-pressure resistant self-sealing rotary compensator includes a compensating tube, a bellows embedded in the compensating tube, and docking joints rotatably provided at both ends of the compensating tube. The outer wall of the connection between the compensating tube and the docking joint is sleeved with a sealing ring seat with a stepped inner wall. The inner wall of the sealing ring seat is provided with a sealing assembly. Stress levers are rotatably provided on the flanges at both ends of the bellows. The free ends of the two stress levers are connected by an elastic member. A compensation amount adjustment assembly for locking the angle of the stress lever is provided on the flange of the bellows.

[0008] In the above technical solution, universal supports are circumferentially arranged on the opposite side walls of the flanges at both ends of the bellows, one end of the stress stop rod is fixedly connected to a steering member, and the steering member is embedded in the inner cavity of the universal support.

[0009] The compensation amount adjustment component includes a deformation groove arranged at the edge of the cavity opening of the universal support, and the outer wall of the universal support is threadedly connected with a locking seat.

[0010] A guard plate facing the corrugated pipe is fixedly mounted on the outer wall of the stress barrier rod.

[0011] The sealing assembly includes a sealing groove provided on the outer wall of the butt joint, a sealing gasket is embedded in the inner cavity of the sealing groove, and a recess corresponding to the sealing gasket is provided on the inner wall of the sealing ring seat.

[0012] A guide ring seat is embedded in the inner wall of the sealing ring seat, a guide ring groove corresponding to the guide ring seat is opened on the outer wall of the butt joint, and the guide ring seat is embedded in the inner wall of the guide ring groove.

[0013] Both ends of the sealing ring seat are respectively provided with sealing seats sleeved on the compensation pipe and the outer wall of the butt joint.

[0014] An arc-shaped groove is formed on the outer wall of the sealing seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the high-pressure resistant self-sealing rotary compensator:

[0016] 1. Rotatable butt joints are embedded in the inner walls of the interfaces on both sides of the compensation pipe, making the two butt joints more flexible when connecting with the pipes on both sides. By changing the angle, the adaptability between the pipes on both sides is improved, thereby ensuring the overall sealing of the pipeline and improving the efficiency of pipeline construction.

[0017] 2. When the thermal expansion occurs inside the compensation tube, the thermal stress generated is applied to the inner wall of the bellows. At this time, the elastic deformation of the elastic part increases the buffering force for outward expansion, avoiding damage to the outer wall of the bellows, thereby protecting the bellows.

[0018] 3. Before the compensator leaves the factory, the compensation amount of the bellows needs to be adjusted. The corresponding stress levers are rotated on the flanges at both ends of the bellows. After adjusting to the appropriate position, the stress levers are locked at the corresponding angle through the compensation adjustment component, thereby ensuring the stability of the bellows during transportation and avoiding deformation of the bellows during transportation.

[0019] 4. When adjusting the compensation amount before leaving the factory, after adjusting the position of the bellows to the appropriate position, turn the locking seats on each universal support in turn to fix the stress lever. After connecting the compensation pipe to the pipeline compensation, remove the locking seats on each universal support to protect the bellows during expansion changes.

[0020] 5. The bellows is surrounded in the middle by eight circumferential guard plates, and the gap between two adjacent guard plates corresponds to the corresponding stress barrier rods, thereby providing protection for the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a high-pressure resistant self-sealing rotary compensator of the utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of a high-pressure resistant self-sealing rotary compensator of the utility model. Figure 2 ;

[0023] Figure 3 This is an exploded schematic diagram of the bellows structure of the present invention;

[0024] Figure 4 This is a partial exploded schematic diagram of the expansion stress component structure of the present invention;

[0025] Figure 5 This is an exploded schematic diagram of the structure of the butt joint part of the utility model;

[0026] Figure 6 This is a structural cross-sectional view of the sealing ring seat portion of the utility model;

[0027] in, Figures 1 to 6 The correspondence between the figure marks and the component names is: 1-compensating tube, 2-bellows, 3-joint, 4-sealing ring seat, 5-stress stop rod, 6-guard plate, 7-elastic member, 8-sealing seat, 9-universal support, 10-connecting seat, 11-embedded groove, 12-locking seat, 13-rotating member, 14-deformation groove, 15-guide ring groove, 16-sealing slot, 17-sealing gasket, 19-guide ring seat, 20-yielding slot. DETAILED DESCRIPTION

[0028] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0029] The following is a combination of specific implementation cases and attached Figure 1-6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0030] A high-pressure, self-sealing rotary compensator comprises a compensating tube 1 embedded with a bellows 2. The bellows 2 is embedded and fixed at the center of the compensating tube 1 via a flange. The bellows 2 is a tubular elastic sensitive element formed by foldable corrugated sheets connected along the folding and stretching direction. The elastic deformation of the bellows 2 resists stress generated by thermal expansion pressure within the compensating tube 1, preventing damage to the tube.

[0031] Both ends of the compensation pipe 1 are rotatably provided with butt joints 3. Each end of the compensation pipe 1 has an integrally formed L-shaped joint. Rotatable butt joints 3 are embedded in the inner walls of the joints on both sides of the compensation pipe 1, making the two butt joints 3 more flexible when connecting to the pipes on both sides. By changing the angle, the adaptability between the two pipes is improved, thereby ensuring the overall sealing of the pipes, thereby improving the efficiency of pipeline construction.

[0032] A sealing ring seat 4 with a stepped inner wall is sleeved onto the outer wall of the connection between the compensating tube 1 and the butt joint 3. The stepped inner wall of the sealing ring seat 4 ensures simultaneous adaptation to the outer walls of both the compensating tube 1 and the butt joint 3. This allows the sealing ring seat 4 to adhere to the outer walls of both the compensating tube 1 and the butt joint 3 simultaneously. The large-diameter inner wall of the sealing ring seat 4 securely fits against the outer wall of the compensating tube 1 port, while the small-diameter inner wall of the sealing ring seat 4 fits against the outer wall of the butt joint 3, allowing the butt joint 3 to rotate against the inner wall of the sealing ring seat 4.

[0033] The inner wall of the sealing ring seat 4 is provided with a sealing assembly. The sealing assembly on the inner wall of the sealing ring seat 4 ensures the sealing between the butt joint 3 and the compensation tube 1, and improves the sealing of the butt joint 3 during rotation. Stress levers 5 are rotatably provided on the flanges at both ends of the bellows 2. The free ends of the two stress levers 5 are connected by an elastic member 7. The flange of the bellows 2 is provided with a compensation adjustment assembly for locking the angle of the stress levers 5. The interfaces at both ends of the bellows 2 are connected to the compensation tube 1 through flanges. The corresponding stress levers 5 are circumferentially installed on the opposite surfaces of the flanges at both ends of the bellows 2 in sequence, so that the two circumferential groups of stress levers 5 are located on the opposite surfaces of the flanges on both sides of the bellows 2.

[0034] The two lateral stress retaining rods 5 are fixedly connected by an elastic member 7, which is a compression spring. The end of the stress retaining rod 5 away from the flange of the bellows 2 is vertically fixed to the surface of the connecting seat 10. The two connecting seats 10 have embedded grooves 11 on the opposing surfaces. The ends of the elastic member 7 are respectively fixed to the inner walls of the embedded grooves 11 of the two lateral connecting seats 10.

[0035] When the compensation tube 1 thermally expands, the generated thermal stress is applied to the inner wall of the bellows 2. At this time, the elastic deformation of the elastic member 7 increases the buffering force for outward expansion, avoiding damage to the outer wall of the bellows 2, thereby protecting the bellows 2.

[0036] Before the compensator leaves the factory, the compensation amount of the bellows 2 needs to be adjusted by rotating the corresponding stress stop rods 5 on the flanges at both ends of the bellows 2. After adjusting to the appropriate position, the compensation amount adjustment component locks the stress stop rods 5 at the corresponding angle, thereby ensuring the stability of the bellows 2 during transportation and preventing the bellows 2 from deforming during transportation.

[0037] Universal supports 9 are circumferentially disposed on the opposing sidewalls of the flanges at both ends of the bellows 2. A steering member 13 is fixedly connected to one end of the stress retaining rod 5, and the steering member 13 is embedded in the inner cavity of the universal support 9. The universal support 9 is sequentially fixed circumferentially along the edge of the flange of the bellows 2. A spherical cavity is defined on the surface of the universal support 9. The rotating member 13 is spherical, allowing the rotating member 13 to be movably embedded in the inner cavity of the universal support 9.

[0038] One end of the stress guard rod 5 is fixedly mounted on the outer wall of the steering member 13, and the other end of the stress guard rod 5 is vertically fixed to the connecting seat 10. Through the movable cooperation between the spherical rotating member 13 and the universal support 9, the direction of the stress guard rod 5 is more flexible, thereby ensuring the protective effect of the bellows 2.

[0039] It is worth noting that the compensation adjustment assembly includes a deformation groove 14 formed at the edge of the cavity of the universal support 9. The outer wall of the universal support 9 is threadedly connected to the locking seat 12. The deformation grooves 14 are sequentially formed around the edge of the movable cavity of the universal support 9, dividing the edge of the universal support 9 into four sections. The deformation grooves 14 facilitate the installation of the rotating member 13. When the spherical rotating member 13 is placed into the universal support 9, the deformation of the deformation grooves 14 allows the rotating member 13 to enter the universal support 9 and rotate within the movable cavity.

[0040] External threads are provided on the outer wall of the universal support 9, and threaded holes are provided on the surface of the locking seat 12, extending through the inner cavity and connecting to the external threads on the outer wall of the universal support 9. When adjusting the compensation amount before shipment, after adjusting the position of the bellows 2 to the appropriate position, the locking seat 12 on each universal support 9 is tightened in sequence to secure the stress stop rod 5. After the compensation tube 1 is docked with the compensation pipeline, the locking seat 12 on each universal support 9 is removed to protect the bellows 2 during expansion changes.

[0041] In addition, a guard plate 6 is fixedly mounted on the outer wall of the stress barrier rod 5, facing the bellows 2. An arc-shaped guard plate 6 is fixedly mounted on the outer wall of each stress barrier rod 5 facing the bellows 2. The eight circumferential guard plates 6 surround the bellows 2 in the middle, and the gap between two adjacent guard plates 6 corresponds to the corresponding stress barrier rod 5, thereby providing protection for the bellows 2.

[0042] The sealing assembly also includes a sealing groove 16 formed on the outer wall of the butt joint 3. A sealing gasket 17 is embedded within the inner cavity of the sealing groove 16. The sealing gasket 17 is made of an elastic material, i.e., rubber. The inner wall of the sealing ring seat 4 is provided with a recess 20 corresponding to the sealing gasket 17. The sealing gasket 17 between the butt joint 3 and the sealing ring seat 4 enhances sealing performance.

[0043] Furthermore, a guide ring seat 19 is embedded in the inner wall of the sealing ring seat 4, and a guide ring groove 15 corresponding to the guide ring seat 19 is formed on the outer wall of the butt joint 3. The guide ring seat 19 is embedded in the inner wall of the guide ring groove 15. The sliding fit between the guide ring seat 19 and the guide ring groove 15 improves the sealing performance of the butt joint during the rotational docking process.

[0044] Both ends of the sealing ring seat 4 are respectively provided with sealing seats 8 sleeved on the outer walls of the compensation pipe 1 and the butt joint 3. The sealing seats 8 at both ends of the sealing ring seat 4 further improve the sealing performance of the connection between the butt joint 3 and the compensation pipe 1.

[0045] The outer wall of the sealing seat 8 is provided with an arc groove. The arc groove is provided circumferentially of the sealing seat 8 to prevent the connection between the butt joint 3 and the compensation pipe 1 from being damaged by the arc groove, thereby playing a protective effect.

[0046] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0048] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure resistant self-sealing rotary compensator, comprising a compensating tube (1), characterized in that: A bellows (2) is embedded in the compensation tube (1), and docking joints (3) are rotatably provided at both ends of the compensation tube (1). A sealing ring seat (4) with a stepped inner wall is sleeved on the outer wall of the connection between the compensation tube (1) and the docking joint (3), and a sealing assembly is provided on the inner wall of the sealing ring seat (4). Stress retaining rods (5) are rotatably provided on the flanges at both ends of the bellows (2), and the free ends of the two stress retaining rods (5) are connected by an elastic member (7). A compensation amount adjustment assembly for locking the angle of the stress retaining rod (5) is provided on the flange of the bellows (2).

2. The high-pressure resistant self-sealing rotary compensator according to claim 1, characterized in that: Universal supports (9) are circumferentially arranged on the opposite side walls of the flanges at both ends of the bellows (2); one end of the stress retaining rod (5) is fixedly connected to a steering member (13), and the steering member (13) is embedded in the inner cavity of the universal support (9).

3. The high-pressure resistant self-sealing rotary compensator according to claim 2, characterized in that: The compensation adjustment component comprises a deformation groove (14) provided at the edge of the cavity opening of the universal support (9); the outer wall of the universal support (9) is threadedly connected with a locking seat (12).

4. The high-pressure resistant self-sealing rotary compensator according to claim 1, characterized in that: A guard plate (6) facing the corrugated pipe (2) is fixedly mounted on the outer wall of the stress barrier rod (5).

5. The high-pressure resistant self-sealing rotary compensator according to claim 1, characterized in that: The sealing assembly comprises a sealing groove (16) provided on the outer wall of the docking joint (3); a sealing gasket (17) is embedded in the inner cavity of the sealing groove (16); and a clearance groove (20) corresponding to the sealing gasket (17) is provided on the inner wall of the sealing ring seat (4).

6. The high-pressure resistant self-sealing rotary compensator according to claim 1, characterized in that: A guide ring seat (19) is embedded in the inner wall of the sealing ring seat (4), a guide ring groove (15) corresponding to the guide ring seat (19) is opened on the outer wall of the docking joint (3), and the guide ring seat (19) is embedded in the inner wall of the guide ring groove (15).

7. The high-pressure resistant self-sealing rotary compensator according to claim 1, characterized in that: Both ends of the sealing ring seat (4) are respectively provided with sealing seats (8) sleeved on the outer walls of the compensation pipe (1) and the butt joint (3).

8. The high-pressure resistant self-sealing rotary compensator according to claim 7, characterized in that: An arc-shaped groove is formed on the outer wall of the sealing seat (8).

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