Butterfly valve function test bench with circulation structure

Abstract

This utility model discloses a butterfly valve functional test bench with a circulation structure, comprising a U-shaped frame. Four shock absorbers are fixedly connected to the lower inner wall of the U-shaped frame, distributed at the four corners of the U-shaped frame. A test bench is fixedly connected to the upper end of each shock absorber, and an mounting groove is provided on the upper surface of the test bench. The circulation structure design, consisting of a circulation cylinder, a circulation pump, an inlet pipe, and an outlet pipe, enables fluid circulation within the system, facilitating continuous and stable functional testing of the butterfly valve. It simulates the actual circulatory conditions of the butterfly valve, improving the realism of the test while reducing fluid waste and saving testing resources. The shock absorbers, through the cooperation of dampers, shock-absorbing springs, and limiting slide rods with slide grooves, effectively buffer vibrations during the test, preventing vibrations from affecting the stability of the test bench and thus improving the accuracy of the butterfly valve functional test.

Description

Technical Field

[0001] This utility model relates to the field of valve body function testing technology, and in particular to a butterfly valve function test bench with a circulation structure. Background Technology

[0002] In the field of butterfly valve functional testing, existing technologies generally employ open fluid systems, meaning a single test is completed by injecting fluid once. This approach has two major drawbacks: first, it cannot simulate the cyclic flow scenarios faced by butterfly valves in actual operating conditions, leading to discrepancies between test results and real-world usage; second, the open system results in significant fluid waste, especially in high-pressure and special media (such as corrosive liquids), where the cost per test can reach thousands of yuan, requiring frequent fluid replenishment and severely impacting testing efficiency; furthermore, existing test benches generally lack professional vibration damping designs, and vibrations generated by high-pressure fluid impacts during testing can cause equipment displacement, affecting testing accuracy.

[0003] A Chinese patent, application number CN202121085943.0, discloses a "clamping device for butterfly valve performance testing." While the device achieves angle adjustment through a clamping structure, it employs an open fluid loop, requiring re-injection of the medium for each test, resulting in a single water consumption exceeding 200L. Furthermore, it lacks any vibration damping components. When the test pressure exceeds 10MPa, the equipment vibration amplitude can reach 3mm, leading to a sealing performance test error rate as high as 8%. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a butterfly valve functional test bench with a circulation structure. The circulation structure design, consisting of a circulation cylinder, a circulation pump, an inlet pipe, and an outlet pipe, enables fluid to circulate within the system, facilitating continuous and stable functional testing of the butterfly valve. It can simulate the circulatory conditions of the butterfly valve in actual operation, improve the authenticity of the test, and at the same time reduce fluid waste and save test resources. The shock-absorbing components, through the cooperation of dampers, shock-absorbing springs, and limit slide rods and slide grooves, can effectively buffer the vibration during the test process, avoid the vibration from affecting the stability of the test bench, and thus improve the accuracy of the butterfly valve functional test.

[0005] This utility model also provides a butterfly valve functional test bench with a circulation structure as described above, comprising: a U-shaped frame, wherein four shock absorbers are fixedly connected to the lower inner wall of the U-shaped frame and distributed at the four corners of the U-shaped frame; a test bench is fixedly connected to the upper end of the shock absorbers; and an installation groove is provided on the upper surface of the test bench; a circulation cylinder is fixedly connected to the lower inner wall of the installation groove; a circulation pump is fixedly connected to the rear surface of the circulation cylinder; the input end of the circulation pump is connected to the circulation cylinder through an inlet pipe; and an outlet pipe is fixedly connected to the output end of the circulation pump; the end of the outlet pipe is located directly above the circulation pump; and a mating sleeve is threadedly connected to the end of the outlet pipe; and a valve body is threadedly connected to the mating sleeve.

[0006] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided. Four casters are fixedly connected to the lower surface of the U-shaped frame, distributed at the four corners of the U-shaped frame. This facilitates the movement of the test bench and improves its ease of use.

[0007] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided. The front and rear surfaces of the U-shaped frame are both fixedly connected to mounting plates by fixing bolts, and a handle is fixedly connected to the front surface of the mounting plate. This facilitates the movement of the test bench and improves its ease of use.

[0008] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided with a limiting groove on both the front and rear inner walls of the U-shaped frame. This facilitates the limiting installation of the test bench.

[0009] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided, wherein a limiting slide rod is fixedly connected to both the front and rear surfaces of the test bench, and the limiting slide rod slides within a limiting groove. This facilitates the stable installation of the test bench.

[0010] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided, wherein the shock-absorbing components include a U-shaped limiting frame, a damper, a shock-absorbing spring, and a support block. This facilitates stable shock absorption.

[0011] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided. The lower surface of the U-shaped limiting frame is fixedly connected to the lower inner wall of the U-shaped frame. Limiting grooves are provided on both the left and right inner walls of the U-shaped limiting frame. The damper is fixedly connected to the lower inner wall of the U-shaped limiting frame. The shock-absorbing spring is fixedly connected to the upper surface of the damper. The support block is fixedly connected to the upper end of the shock-absorbing spring. The upper surface of the support block is fixedly connected to the lower surface of the test bench. Limiting rods are fixedly connected to both the left and right surfaces of the support block, and the limiting rods slide within the limiting grooves. This facilitates stable shock absorption.

[0012] According to the present invention, a butterfly valve functional test bench with a circulation structure is provided. A limiting ring one is fixedly connected to the end side surface of the outlet pipe. The lower surface of the limiting ring one abuts against the upper end of the connecting sleeve. A limiting ring two is fixedly connected to the side surface of the connecting sleeve, and the limiting ring two abuts against the upper end of the valve body. This facilitates the limiting installation of the connecting sleeve and the valve body.

[0013] Beneficial effects:

[0014] 1. Compared with the prior art, the butterfly valve functional test bench with a circulation structure, which consists of a circulation cylinder, a circulation pump, an inlet pipe and an outlet pipe, can realize the circulation of fluid in the system, which is convenient for continuous and stable functional testing of the butterfly valve. It can simulate the circulation conditions of the butterfly valve in actual operation, improve the authenticity of the test, and at the same time reduce fluid waste and save test resources.

[0015] 2. Compared with the prior art, the butterfly valve functional test bench with a circulation structure can effectively buffer the vibration during the test by means of dampers, damping springs and limit slide rods and slide grooves, so as to avoid the vibration affecting the stability of the test bench and thus improve the accuracy of butterfly valve functional test. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a butterfly valve functional test bench with a circulation structure according to the present invention.

[0018] Figure 2 This is a partially enlarged structural diagram of a butterfly valve functional test bench with a circulation structure according to the present invention.

[0019] Figure 3 This is a longitudinal three-dimensional cross-sectional view of a butterfly valve functional test bench with a circulation structure according to the present invention.

[0020] Figure 4 This is a schematic diagram of the transverse three-dimensional cross-sectional structure of a butterfly valve functional test bench with a circulation structure according to the present invention.

[0021] Legend:

[0022] 1. U-shaped frame; 2. Mounting slot; 3. Circulation cylinder; 4. Valve body; 5. Limiting ring two; 6. Connecting sleeve; 7. Limiting ring one; 8. Water outlet pipe; 9. Circulation pump; 10. Shock absorber; 11. Test bench; 12. Limiting slide groove one; 13. Limiting slide rod one; 14. Handle; 15. Mounting plate; 16. Fixing bolt; 17. Casters; 18. Water inlet pipe; 19. U-shaped limit frame; 20. Damper; 21. Shock absorber spring; 22. Support block; 23. Limiting slide groove two; 24. Limiting slide rod two. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1 and Figure 2 This utility model discloses a butterfly valve functional test bench with a circulation structure, comprising a U-shaped frame 1. Four casters 17 are fixedly connected to the lower surface of the U-shaped frame 1, distributed at the four corners of the U-shaped frame 1. Mounting plates 15 are fixedly connected to the front and rear surfaces of the U-shaped frame 1 via bolts 16. A handle 14 is fixedly connected to the front surface of the mounting plate 15. Limiting grooves 12 are provided on the front and rear inner walls of the U-shaped frame 1. Four shock absorbers 10 are fixedly connected to the lower inner wall of the U-shaped frame 1, distributed at the four corners of the U-shaped frame 1. A test bench 11 is fixedly connected to the upper end of each shock absorber 10. Limiting rods 13 are fixedly connected to the front and rear surfaces of the test bench 11. The 13 slides within the limiting groove 12. The upper surface of the test bench 11 is provided with an installation groove 2. The damping component 10 includes a U-shaped limiting frame 19, a damper 20, a damping spring 21, and a support block 22. The lower surface of the U-shaped limiting frame 19 is fixedly connected to the lower inner wall of the U-shaped frame 1. Limiting grooves 23 are provided on both the left and right inner walls of the U-shaped limiting frame 19. The damper 20 is fixedly connected to the lower inner wall of the U-shaped limiting frame 19. The damping spring 21 is fixedly connected to the upper surface of the damper 20. The support block 22 is fixedly connected to the upper end of the damping spring 21. The upper surface of the support block 22 is fixedly connected to the lower surface of the test bench 11. Limiting rods 24 are fixedly connected to both the left and right sides of the support block 22. The limiting rods 24 slide within the limiting grooves 23.

[0025] Reference Figure 1 , Figure 3 and Figure 4A circulation cylinder 3 is fixedly connected to the lower inner wall of the mounting groove 2. A circulation pump 9 is fixedly connected to the rear surface of the circulation cylinder 3. The input end of the circulation pump 9 is connected to the circulation cylinder 3 through the water inlet pipe 18. The output end of the circulation pump 9 is fixedly connected to the water outlet pipe 8. The end of the water outlet pipe 8 is located directly above the circulation pump 9. The end of the water outlet pipe 8 is threadedly connected to the mating sleeve 6. The mating sleeve 6 is threadedly connected to the valve body 4. The side surface of the end of the water outlet pipe 8 is fixedly connected to the limiting ring 1 7. The lower surface of the limiting ring 1 7 abuts against the upper end of the mating sleeve 6. The side surface of the mating sleeve 6 is fixedly connected to the limiting ring 2 5. The limiting ring 2 5 abuts against the upper end of the valve body 4.

[0026] Specifically, the operator holds the handle 14 on the mounting plate 15 and pushes the equipment. The test bench is moved to the working position via the four casters 17 at the bottom of the U-shaped frame 1. The lower end of the valve body 4 of the butterfly valve to be tested is placed in the mounting groove 2 of the test bench 11, and its upper end is threadedly connected to the connecting sleeve 6 at the end of the outlet pipe 8. At this time, the second limiting ring 5 abuts against the upper end of the valve body 4 for limiting, while the first limiting ring 7 abuts against the upper end of the connecting sleeve 6 for fixation. The circulation pump 9 is started, driving the test medium in the circulation cylinder 3 to enter the circulation pump 9 through the inlet pipe 18. After pressurization, it is transported to the connecting sleeve 6 through the outlet pipe 8. Set 6, the medium flows through valve body 4 to complete valve performance testing, and finally flows back to circulation cylinder 3 to form a circulation loop. During the test, the vibration of test bench 11 is absorbed by four shock absorbers 10: when the support block 22 is under pressure, it drives the shock absorber spring 21 to compress, and at the same time the damper 20 consumes kinetic energy. The limit slide rods 24 on both sides of the support block 22 slide vertically along the limit slide grooves 23 of the U-shaped limit frame 19 to prevent displacement; the test bench 11 as a whole slides in the limit slide grooves 12 of the U-shaped frame 1 through the limit slide rods 13 on its side to ensure smooth lifting and lowering.

[0027] Working principle: The lower end of the valve body 4 to be tested is placed in the mounting groove 2 of the test bench 11, and the upper end is threadedly connected to the docking sleeve 6 at the end of the water outlet pipe 8. The valve body 4 and the pipeline are positioned and sealed by the second limiting ring 5 and the first limiting ring 7. The circulation pump 9 is started to drive the test medium in the circulation cylinder 3. After being sucked in and pressurized through the inlet pipe 18, it flows through the docking sleeve 6 and the valve body 4 through the outlet pipe 8 to test the valve performance. Finally, the medium flows back to the circulation cylinder 3 to form a closed loop circulation. The vibration generated during the test is buffered by four shock absorbers 10. The shock absorber spring 21 and the damper 20 absorb the energy. The second limiting slide rod 24 slides vertically in the second limiting slide groove 23 to prevent deviation. At the same time, the first limiting slide rod 13 on the side of the test bench 11 slides along the first limiting slide groove 12 of the U-shaped frame 1 to ensure that the test bench 11 rises and falls smoothly to maintain accuracy.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A butterfly valve functional test bench with a circulation structure, characterized in that, include: U-shaped frame (1), the lower inner wall of the U-shaped frame (1) is fixedly connected with shock absorbers (10), the number of shock absorbers (10) is four, and they are distributed at the four corners of the U-shaped frame (1), the upper end of the shock absorber (10) is fixedly connected with a test platform (11), and the upper surface of the test platform (11) is provided with a mounting groove (2). A circulation cylinder (3) is fixedly connected to the lower inner wall of the mounting groove (2). A circulation pump (9) is fixedly connected to the rear surface of the circulation cylinder (3). The input end of the circulation pump (9) is connected to the circulation cylinder (3) through the water inlet pipe (18). The output end of the circulation pump (9) is fixedly connected to the water outlet pipe (8). The end of the water outlet pipe (8) is located directly above the circulation pump (9). The end of the water outlet pipe (8) is threadedly connected to a mating sleeve (6). The mating sleeve (6) is threadedly connected to a valve body (4).

2. The butterfly valve functional test bench with a circulation structure according to claim 1, characterized in that, The lower surface of the U-shaped frame (1) is fixedly connected with casters (17), and there are four casters (17) distributed at the four corners of the U-shaped frame (1).

3. The butterfly valve functional test bench with a circulation structure according to claim 1, characterized in that, The front and rear surfaces of the U-shaped frame (1) are fixedly connected to mounting plates (15) by fixing bolts (16), and a handle (14) is fixedly connected to the front surface of the mounting plate (15).

4. The butterfly valve functional test bench with a circulation structure according to claim 1, characterized in that, The U-shaped frame (1) is provided with limit grooves (12) on the front and rear inner walls.

5. A butterfly valve functional test bench with a circulation structure according to claim 1, characterized in that, The front and rear surfaces of the test bench (11) are fixedly connected to a limiting slide bar (13), which slides within a limiting groove (12).

6. A butterfly valve functional test bench with a circulation structure according to claim 1, characterized in that, The shock absorber (10) includes a U-shaped limit frame (19), a damper (20), a shock absorber spring (21), and a support block (22).

7. A butterfly valve functional test bench with a circulation structure according to claim 6, characterized in that, The lower surface of the U-shaped limiting frame (19) is fixedly connected to the lower inner wall of the U-shaped frame (1). The left and right inner walls of the U-shaped limiting frame (19) are provided with limiting grooves (23). The damper (20) is fixedly connected to the lower inner wall of the U-shaped limiting frame (19). The shock-absorbing spring (21) is fixedly connected to the upper surface of the damper (20). The support block (22) is fixedly connected to the upper end of the shock-absorbing spring (21). The upper surface of the support block (22) is fixedly connected to the lower surface of the test bench (11). The left and right surfaces of the support block (22) are fixedly connected with limiting rods (24). The limiting rods (24) slide in the limiting grooves (23).

8. A butterfly valve functional test bench with a circulation structure according to claim 1, characterized in that, The end side surface of the water outlet pipe (8) is fixedly connected to a limiting ring one (7), the lower surface of the limiting ring one (7) abuts against the upper end of the docking sleeve (6), the side surface of the docking sleeve (6) is fixedly connected to a limiting ring two (5), and the limiting ring two (5) abuts against the upper end of the valve body (4).

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