A large axial compensation self-limiting pipeline compensator

Abstract

This invention belongs to the field of pipeline compensation, specifically relating to a large axial compensation self-limiting pipeline compensator. It includes: a left connecting pipe (1), a right connecting pipe (2), an outer support (3), a support ring assembly (4), a bellows (5), a pressure block (6), and an outer ring (7). The bellows (5) is connected at both ends to the inner ends of the left connecting pipe (1) and the right connecting pipe (2), respectively. The outer support (3) has a ring structure with its small end connected to the outer end of the left connecting pipe (1). One end of the outer ring (7) is connected to the large end of the outer support (3), and the inner wall of the outer ring (7) is provided with a left limiting platform and a right limiting platform, respectively. The support ring assembly (4) includes a pressure ring (41) and a support ring (42). The small end of the support ring (42) is connected to the outer end of the right connecting pipe (2), and the large end of the support ring (42) is provided with multiple axial grooves, forming a ring-shaped finger structure. The pressure ring (41) is fixed to the outside of the large end of the support ring (42). The pressure block (6) is disposed inside the pressure ring (41).

Description

Technical Field

[0001] This invention belongs to the field of pipeline compensation, specifically relating to a large axial compensation self-limiting pipeline compensator. Background Technology

[0002] Pipeline compensators consist of bellows and structural components. They transmit high-temperature, high-pressure airflow through an internal flow-sealing structure, achieving a sealed connection. Simultaneously, the flexible compensating component—the bellows—generates corresponding displacement to compensate for installation errors, vibrations, and thermal expansion and contraction caused by high temperatures in the pipeline system. This reduces stress in the pipeline system, ensuring its safe and reliable operation.

[0003] As compensation devices for high-pressure pipelines, there are traditional free-type pipeline compensators, tie-rod type pipeline compensators, ball joints, and other structures, such as... Figure 1-3 In traditional pipeline compensators, the free-type compensator has a simple structure and can compensate for axial and radial displacements, but it lacks limit functionality in all directions. When the matching pipeline limit fails, the compensation device is prone to deformation, instability, and other failures. The tie-rod type compensator adds axial tension limit functionality to the free-type compensator, resulting in a complex structure and large external dimensions. As the bellows is a thin-walled component, its exposed structure is prone to surface defects, leading to premature failure. The spherical joint structure is widely used in pipelines, offering advantages such as compact structure, long service life, and embedded bellows structure. However, since the spherical joint can only achieve angular compensation, it cannot achieve compensation functionality in long straight pipes. Summary of the Invention

[0004] Purpose of the invention: To provide a large axial compensation self-limiting pipeline compensator that can achieve axial, radial, and angular self-limiting as well as large axial displacement.

[0005] Technical solution:

[0006] A large axial compensation self-limiting pipeline compensator includes: a left connecting pipe 1, a right connecting pipe 2, an outer support 3, a support ring assembly 4, a bellows 5, a pressure block 6, and an outer ring 7, wherein...

[0007] The two ends of the bellows 5 are connected to the inner ends of the left pipe 1 and the right pipe 2, respectively; the outer support 3 is a ring structure and its small end is connected to the outer end of the left pipe 1; one end of the outer ring 7 is connected to the large end of the outer support 3, and the inner wall of the outer ring 7 is provided with a left limiting platform and a right limiting platform, respectively; the support ring assembly 4 includes a pressure ring 41 and a support ring 42, the small end of the support ring 42 is connected to the outer end of the right pipe 2, and the large end of the support ring 42 is provided with multiple axial grooves, forming a ring-shaped finger structure; the pressure ring 41 is fixed to the outside of the large end of the support ring 42; the pressure block 6 is disposed inside the pressure ring 41.

[0008] Furthermore, the two ends of the corrugated pipe 5 are welded to the inner ends of the left connecting pipe 1 and the right connecting pipe 2, respectively.

[0009] Furthermore, the two ends of the corrugated pipe 5 are welded to the inner ends of the left pipe 1 and the right pipe 2 respectively through welding rings 8.

[0010] Furthermore, the multiple axial grooves on the support ring 42 are of the same size and are evenly distributed.

[0011] Furthermore, the size and number of the multiple axial grooves on the support ring 42 are determined according to the compensation angle.

[0012] Furthermore, the outer surface of the pressure block 6 is an arc or spherical surface that forms a line contact with the inner wall surface of the outer ring 7.

[0013] Furthermore, the distance between the left and right limit stages corresponds to the axial displacement.

[0014] Furthermore, the left and right limit stages are circular.

[0015] Beneficial effects:

[0016] 1) It achieves axial, radial, and angular self-limiting through its own structure, eliminating the need for external flanges and tie rod mechanisms, resulting in small overall dimensions;

[0017] 2) The axial limiting structure is formed by the external support, outer ring and pressure block, which realizes axial tension and compression self-limiting at the same time, and solves the drawbacks of free type and tie rod type pipeline compensators that do not limit axial movement and only realize tension limiting.

[0018] 3) The outer spherical surface of the pressure block and the outer ring form an axial guide, which, compared with traditional pipeline compensators, can achieve large axial displacement tensile and compressive compensation;

[0019] 4) Similar to the structure of a ball joint, both are compact pipeline compensation structures, but they can achieve axial compensation that a single ball joint cannot achieve.

[0020] 5) Thin-walled corrugated pipes are installed inside the spherical shell to prevent excess material from being embedded in the corrugations and reducing the product's service life. Attached Figure Description

[0021] Figure 1 It is a traditional free-type pipeline compensator;

[0022] Figure 2 It is a traditional tie-rod type pipeline compensator;

[0023] Figure 3 It is a traditional ball joint compensator;

[0024] Figure 4 This invention relates to a large axial compensation self-limiting pipeline compensator;

[0025] Figure 5This is a schematic diagram of the support ring assembly of the large axial compensation self-limiting pipeline compensator of the present invention;

[0026] Among them, the left pipe 1, right pipe 2, outer support 3, support ring assembly 4, bellows 5, pressure block 6, outer ring 7, welding ring 8, pressure ring 41, and support ring 42 are all included. Detailed Implementation

[0027] In high-temperature and high-pressure pipelines, pipeline deformation caused by temperature changes and vibrations during operation requires compensation by pipeline compensators to ensure safe operation. In high-pressure pipelines, straight pipe section compensators are generally either free-type or tie-rod type. However, free-type compensators lack a limit function, and tie-rod type compensators have large external dimensions. Furthermore, both types have exposed bellows structures, making them susceptible to damage from high-temperature debris and impurities generated during aircraft processes.

[0028] The large axial compensation self-limiting pipeline compensator of the present invention has the advantages of large axial displacement compensation, self-limiting of axial, radial and angular compensation, and corrugated pipe embedded structure, and can realize the axial, radial and angular compensation functions of traditional pipeline compensators.

[0029] like Figure 4-5 A large axial compensation self-limiting pipeline compensator is assembled and welded from a left connecting pipe 1, a right connecting pipe 2, an outer support 3, a support ring assembly 4, a bellows 5, a pressure block 6, an outer ring 7, and a welding ring 8. The support ring assembly 4 is composed of a support ring 42 and a pressure ring 41. At the same time, the pipeline compensator reduces airflow impact and reduces flow resistance through internal connecting pipes.

[0030] Example 1:

[0031] A large axial compensation self-limiting pipeline compensator includes: a left pipe 1, a right pipe 2, an outer support 3, a support ring assembly 4, a bellows 5, a pressure block 6, and an outer ring 7. The bellows 5 is connected at both ends to the inner ends of the left pipe 1 and the right pipe 2, respectively. The outer support 3 has an annular structure with its small end connected to the outer end of the left pipe 1. One end of the outer ring 7 is connected to the large end of the outer support 3, and the inner wall of the outer ring 7 is provided with a left limiting platform and a right limiting platform, respectively. The support ring assembly 4 includes a pressure ring 41 and a support ring 42. The small end of the support ring 42 is connected to the outer end of the right pipe 2, and the large end of the support ring 42 is provided with multiple axial grooves, forming an annular finger-like structure. The pressure ring 41 is fixed to the outside of the large end of the support ring 42. The pressure block 6 is disposed inside the pressure ring 41.

[0032] In another embodiment of the present invention, the two ends of the bellows 5 are welded to the inner ends of the left pipe 1 and the right pipe 2, respectively.

[0033] In another embodiment of the present invention, the two ends of the bellows 5 are respectively welded to the inner ends of the left pipe 1 and the right pipe 2 via welding rings 8.

[0034] In another embodiment of the invention, the multiple axial grooves on the support ring 42 are of the same size and are evenly distributed.

[0035] In another embodiment of the invention, the size and number of the plurality of axial grooves on the support ring 42 are determined according to the compensation angle. For example, when the angle compensation is 5°, 24 grooves with a width of 3.5 mm are provided.

[0036] In another embodiment of the present invention, the outer surface of the pressure block 6 is an arc surface or a spherical surface that forms a line contact with the inner wall surface of the outer ring 7.

[0037] In another embodiment of the present invention, the distance between the left limiting stage and the right limiting stage corresponds to the axial displacement.

[0038] In another embodiment of the present invention, the left limiting platform and the right limiting platform are annular.

[0039] The elastic support ring assembly and pressure block structure of the present invention achieve radial and angular compensation and limiting through the elastic deformation of the support ring; the outer support, outer ring and pressure block form an axial limiting structure, which simultaneously achieves axial tension and compression self-limiting; the outer spherical surface of the pressure block and the outer ring form an axial guide, realizing large axial displacement tension and compression compensation.

[0040] In summary, this invention innovatively designs an elastic support ring assembly and a pressure block structure. The elastic deformation of the support ring achieves radial and angular compensation and limiting; the outer spherical surface of the pressure block and the outer ring form an axial guide, enabling large axial displacement tensile and compressive compensation; the innovative design of the axial limiting structure composed of the outer support, outer ring, and pressure block simultaneously achieves axial tensile and compressive self-limiting; the outer support and outer ring form a protective mechanism, avoiding risks caused by exposed bellows and improving product lifespan.

Claims

1. A large axial compensation self-limiting pipeline compensator, characterized in that, include: Left connecting pipe (1), right connecting pipe (2), outer support (3), support ring assembly (4), bellows (5), pressure block (6), outer ring (7), among which, The two ends of the bellows (5) are connected to the inner ends of the left pipe (1) and the right pipe (2) respectively; the outer support (3) is a ring structure and its small end is connected to the outer end of the left pipe (1); one end of the outer ring (7) is connected to the large end of the outer support (3), and the inner wall of the outer ring (7) is provided with a left limiting platform and a right limiting platform respectively; the support ring assembly (4) includes a pressure ring (41) and a support ring (42), the small end of the support ring (42) is connected to the outer end of the right pipe (2), and the large end of the support ring (42) is provided with multiple axial grooves, and the large end forms a ring finger structure; the pressure ring (41) is fixed on the outside of the large end of the support ring (42); the pressure block (6) is set inside the pressure ring (41).

2. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The two ends of the corrugated pipe (5) are welded to the inner ends of the left pipe (1) and the right pipe (2) respectively.

3. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The two ends of the corrugated pipe (5) are welded to the inner ends of the left pipe (1) and the right pipe (2) respectively through welding rings (8).

4. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The multiple axial grooves on the support ring (42) are the same size and evenly distributed.

5. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The size and number of the multiple axial grooves on the support ring (42) are determined according to the compensation angle.

6. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The outer surface of the pressure block (6) is an arc or spherical surface, which forms a line contact with the inner wall surface of the outer ring (7).

7. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The distance between the left and right limit stages corresponds to the axial displacement.

8. The large axial compensation self-limiting pipeline compensator according to claim 1, characterized in that, The left and right limit stages are circular.

Images