Torsion-resistant directly-buried corrugated compensator
By designing structures such as bolts and flange rings, a stable connection between the bellows compensator and the external pipeline is achieved, and it automatically resets when twisted, solving the problem of resisting torsional forces in existing technologies, extending service life and ensuring the stable operation of the pipeline system.
Patent Information
- Application Number
- CN202520740116.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-18
AI Technical Summary
Existing corrugated compensators are unable to effectively resist torsional forces, leading to damage to the corrugated pipes, reduced service life, and even safety accidents such as pipeline leaks.
The structure employs bolts, flange rings, adjusting screw sleeves, limit plates, fastening connecting cylinders, and reset components (including elastic fiber ropes and springs). Through threaded connections and snap-fit design, the compensator achieves a stable connection with external pipelines and automatically resets itself when twisted to resist torsional forces.
It effectively resists torsional forces, ensures the normal function of the compensator, extends its service life, and ensures the stable operation of the pipeline system.
Smart Images
Figure CN223895434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compensator technology, and in particular to a direct-buried corrugated compensator with anti-torsion properties. Background Technology
[0002] A bellows is a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and expansion direction. Bellows mainly include metal bellows, bellows expansion joints, bellows heat exchange tubes, diaphragms, and metal hoses. When using bellows, torsional forces are often generated due to pressure and water pressure fluctuations. In direct-buried heating pipeline systems, axial displacement and stress are generated due to the expansion and contraction of the pipeline under heat and cooling. Bellows compensators are widely used as important devices to absorb pipeline displacement and reduce stress.
[0003] In addition to axial displacement, pipelines also experience torsional forces due to factors such as ground settlement and uneven soil stress during use. Some corrugated compensators are unable to effectively resist these torsional forces, which can easily damage the corrugated pipes, reduce their service life, and even cause pipeline leaks and other safety accidents. To address these issues, a torsion-resistant direct-buried corrugated compensator is proposed. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a direct-buried corrugated compensator with anti-torsion properties, aiming to improve the problem that some corrugated compensators in the prior art are unable to effectively resist such torsional forces, which can easily lead to damage to the bellows of the compensator, reduce its service life, or even cause safety accidents such as pipeline leaks.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A direct-buried corrugated compensator with torsion resistance includes a bellows, both ends of which are fixedly connected to flange rings. One flange ring has multiple bolts 1 internally threaded, and the other flange ring has multiple bolts 2 internally threaded. An adjusting sleeve is fixedly connected to the adjacent side of each bolt 1 and bolt 2. A limit plate is fixedly connected to the other side of the adjusting sleeve. A fastening connecting cylinder 1 is externally threaded to the bolt 1, and the fastening connecting cylinder 1 has multiple slots inside. A fastening connecting cylinder 2 is externally threaded to the bolt 2, and multiple insert plates are fixedly connected to the outside of the fastening connecting cylinder 2. A reset assembly is provided inside the fastening connecting cylinder 1.
[0007] As a further description of the above technical solution:
[0008] The reset assembly includes elastic fiber ropes, which are respectively fixedly connected to the inside of the fastening connecting cylinder and the slot, and springs are sleeved on the outside of the elastic fiber ropes.
[0009] As a further description of the above technical solution:
[0010] One end of the spring is fixedly connected to the outside of one of the limiting plates, and the other end of the spring is fixedly connected to the outside of the other limiting plate.
[0011] As a further description of the above technical solution:
[0012] The outer side of the insert plate engages with the inner wall of the slot, and the top through hole of the fastening connecting cylinder is threaded to the outside of one of the adjusting sleeves;
[0013] As a further description of the above technical solution:
[0014] The limiting plate is externally slidably connected to the inner walls of fastening connecting cylinder one and fastening connecting cylinder two, and the bottom through hole of fastening connecting cylinder two is threadedly connected to the outside of another adjusting screw sleeve;
[0015] As a further description of the above technical solution:
[0016] The external thread of bolt one is connected to nut one, and the external thread of bolt two is connected to nut two.
[0017] This utility model has the following beneficial effects:
[0018] 1. In this utility model, the threaded connection structure of bolt one and bolt two with the flange ring, combined with the adjusting screw sleeve, the limiting plate, and the engaging structure of fastening connecting cylinder one, fastening connecting cylinder two and the slot and insert plate thereon, realizes the stable connection between the compensator and the external pipeline or equipment, and can flexibly adjust the structural state within a certain range, laying the foundation for the compensator to function normally.
[0019] 2. In this utility model, by connecting the elastic fiber rope and spring in the reset assembly to the limiting plate, the compensator can automatically reset when the external force disappears after displacement or torsion caused by external force, effectively resisting torsional force, ensuring that the compensator accurately compensates for pipeline displacement, extending the service life of the compensator, and ensuring the stable operation of the pipeline system. Attached Figure Description
[0020] Figure 1 This is a three-dimensional schematic diagram of a direct-buried corrugated compensator with anti-torsion properties proposed in this utility model;
[0021] Figure 2 This is a structural schematic diagram of a direct-buried corrugated compensator fastening connecting cylinder with anti-torsion type proposed in this utility model;
[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0023] Figure 4 This is a schematic diagram of the structure of a direct-buried corrugated compensator spring with anti-torsion properties proposed in this utility model.
[0024] Legend:
[0025] 1. Flange ring; 2. Bellows; 3. Bolt 1; 4. Bolt 2; 5. Adjusting screw sleeve; 6. Limiting plate; 7. Fastening connecting sleeve 1; 8. Slot; 9. Fastening connecting sleeve 2; 10. Insert plate; 11. Elastic fiber rope; 12. Spring; 13. Nut 1; 14. Nut 2. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Reference Figure 1 This utility model provides an embodiment of a direct-buried corrugated compensator with anti-torsion properties, including a bellows 2. The bellows 2 is the core elastic component of the compensator, which can deform when the pipeline is displaced due to factors such as thermal expansion and contraction and foundation settlement. It absorbs the axial, lateral or angular displacement of the pipeline, plays a role in compensating for pipeline deformation, ensures the normal operation of the pipeline system, and avoids damage caused by stress concentration due to pipeline deformation. Both ends of the bellows 2 are fixedly connected to flange rings 1. The flange rings 1 provide an interface for connecting with other pipelines or equipment. Through the internal threaded holes, they can be matched with bolts 3 and 4 to achieve a stable connection between the compensator and external components, which is convenient for installation and disassembly and ensures the sealing and stability of the connection.
[0028] One flange ring 1 has multiple bolts 3 internally threaded. Bolts 3 are threadedly connected to flange ring 1, tightly connecting a part of the compensator to the external pipeline and bearing the tensile and compressive forces at the connection. Bolts 3 have nuts 13 externally threaded. Nuts 13 cooperate with bolts 3. By tightening nuts 13, the connection between bolts 3 and flange ring 1 and other connecting components can be further tightened, preventing bolts 3 from loosening due to vibration, pressure, or other factors during pipeline operation, and ensuring the stability of the connection. Another flange ring 1 has multiple bolts 4 internally threaded. Bolts 4 have similar functions to bolts 3, threadedly connected to another flange ring 1, connecting another part of the compensator to the external pipeline or equipment. Bolts 4 have nuts 14 externally threaded. Nuts 14 cooperate with bolts 4. Tightening nuts 14 can effectively prevent bolts 4 from loosening, ensuring the reliability of the compensator's connection to the outside and ensuring that the connection points of the entire pipeline system will not shift or detach during operation.
[0029] Reference Figures 2 to 4 Adjusting sleeves 5 are fixedly connected to the adjacent sides of bolts 3 and 4. The relative positions of the adjusting sleeves 5 with bolts 3 and 4 can be changed by rotating them, thereby finely adjusting the overall structure of the compensator to adapt to different installation and working requirements, and improving the installation accuracy and working adaptability of the compensator. Limiting plates 6 are fixedly connected to the other side of the adjusting sleeves 5. Fastening connecting sleeves 7 are threaded to the outside of bolt 3. The top through hole of fastening connecting sleeves 7 is threaded to the outside of one of the adjusting sleeves 5. Multiple slots 8 are opened inside fastening connecting sleeves 7. Fastening connecting sleeves 9 are threaded to the outside of bolt 4. Fastening connecting sleeves 9 and fastening connecting sleeves 7 together combine the relevant components of the compensator into a whole.
[0030] The limiting plate 6 can limit the movement range of the components and prevent the fastening connecting cylinder 1 7 and fastening connecting cylinder 2 9 from moving excessively. The outer side of the limiting plate 6 is slidably connected to the inner wall of fastening connecting cylinder 1 7 and fastening connecting cylinder 2 9. The bottom through hole of fastening connecting cylinder 2 9 is threadedly connected to the outside of another adjusting screw sleeve 5. Multiple insert plates 10 are fixedly connected to the outside of fastening connecting cylinder 2 9. The insert plates 10 prevent misalignment or excessive displacement between components and ensure the normal operation of the compensator.
[0031] The slot 8 engages with the insert plate 10 on the fastening connecting cylinder 2 9, limiting the relative rotation and movement range between the fastening connecting cylinder 1 7 and the fastening connecting cylinder 2 9, so that the compensator works within the specified range of motion, ensuring the stability of the compensator structure and the controllability of its movement. The outside of the insert plate 10 engages with the inner wall of the slot 8. The slot 8 opened inside the fastening connecting cylinder 1 7 is used to cooperate with the insert plate 10 to realize the relative movement constraint and positioning between components, while providing installation space for the reset assembly.
[0032] The fastening connecting cylinder 7 is equipped with a reset assembly, which includes an elastic fiber rope 11. The elastic fiber rope 11 is fixedly connected to the inside of the fastening connecting cylinder 7 and the slot 8. When the compensator is displaced or torsioned by external force, the auxiliary spring 12 shares the tensile or compressive force and stores elastic potential energy. The elastic fiber rope 11 is sleeved with the spring 12. After the external force disappears, it assists the spring 12 in resetting the compensator, while enhancing the stability of the structure during the reset process and preventing the components from shaking or shifting.
[0033] One end of the spring 12 is fixedly connected to the outside of one of the limiting plates 6, and the other end of the spring 12 is fixedly connected to the outside of the other limiting plate 6. The limiting plate 6 provides support and connection points for the spring 12 and other components, and plays a role in transmitting force during the reset process, ensuring the stability of the compensator structure and the accuracy of the reset. When the compensator is displaced or torsioned by external force, the spring 12 is stretched or compressed, storing elastic potential energy. When the external force disappears, the spring 12 releases its elastic potential energy, pushes the limiting plate 6, and drives the relevant components to reset, so that the compensator returns to its initial position or state, ensuring that the compensator's anti-torsion and displacement compensation functions are functioning normally.
[0034] Working principle: First, initial installation preparation is performed. The flange rings 1, which are fixedly connected to both ends of the bellows 2, serve as the connection base. Multiple bolts 3 are threaded into one flange ring 1, and multiple bolts 4 are threaded into the other flange ring 1. Adjusting sleeves 5 and limiting plates 6 are fixedly connected to the sides of bolts 3 and 4 respectively. Then, a fastening connecting sleeve 7 is threaded onto the outside of bolts 3. It has a slot 8 inside. During operation, when the compensator is subjected to external force and displacement or torsion occurs, the fastening connecting sleeve 7 and the fastening connecting sleeve... When the relative position of the connecting sleeve 2 9 changes, the insert plate 10 slides in the slot 8, stretching or compressing the elastic fiber rope 11 and the spring 12. After the external force disappears, the spring 12 releases energy, which drives the component to reset via the limit plate 6. The elastic fiber rope 11 helps maintain the stability of the structure. If fine adjustment is required, rotate the adjusting screw sleeve 5. After fine adjustment, connect the nut 13 to the external thread of bolt 1 3 and connect the nut 14 to the external thread of bolt 2 4 to fix the entire compensator structure, prevent the components from loosening, and ensure that it can stably and reliably achieve functions such as anti-torsion and compensation for pipeline displacement.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A direct-buried corrugated compensator with anti-torsion properties, comprising a corrugated pipe (2), characterized in that: Both ends of the corrugated pipe (2) are fixedly connected to flange rings (1). One flange ring (1) is internally threaded with multiple bolts (3), and the other flange ring (1) is internally threaded with multiple bolts (4). An adjusting sleeve (5) is fixedly connected to the side of the bolts (3) and (4) respectively. A limit plate (6) is fixedly connected to the other side of the adjusting sleeve (5). A fastening connecting cylinder (7) is externally threaded to the bolt (3). Multiple slots (8) are provided inside the fastening connecting cylinder (7). A fastening connecting cylinder (9) is externally threaded to the bolt (4). Multiple insert plates (10) are fixedly connected to the outside of the fastening connecting cylinder (9). A reset component is provided inside the fastening connecting cylinder (7).
2. The direct-buried corrugated compensator with torsion resistance according to claim 1, characterized in that: The reset assembly includes an elastic fiber rope (11), which is fixedly connected to the inside of the fastening connecting cylinder (7) and the slot (8), and a spring (12) is sleeved on the outside of the elastic fiber rope (11).
3. A direct-buried corrugated compensator with torsion resistance according to claim 2, characterized in that: One end of the spring (12) is fixedly connected to the outside of one of the limiting plates (6), and the other end of the spring (12) is fixedly connected to the outside of the other limiting plate (6).
4. A direct-buried corrugated compensator with torsion resistance according to claim 1, characterized in that: The outside of the insert plate (10) engages with the inner wall of the slot (8), and the top through hole of the fastening connecting cylinder (7) is threaded to the outside of one of the adjusting sleeves (5).
5. A direct-buried corrugated compensator with torsion resistance according to claim 4, characterized in that: The limiting plate (6) is externally slidably connected to the inner walls of fastening connecting cylinder one (7) and fastening connecting cylinder two (9), and the bottom through hole of fastening connecting cylinder two (9) is threadedly connected to the outside of another adjusting sleeve (5).
6. A direct-buried corrugated compensator with torsion resistance according to claim 1, characterized in that: The bolt one (3) is connected to a nut one (13) by its external thread, and the bolt two (4) is connected to a nut two (14) by its external thread.