Pressure-bearing valve performance detection device

Abstract

The invention provides a pressure-bearing valve performance detection device which comprises a test board, a circular lower plugging plate is fixedly arranged at the top of the test board, an air inlet pipe is arranged in the middle of the lower plugging plate, a clamping mechanism is arranged on the outer side of the lower plugging plate, and an upper plugging plate corresponding to the lower plugging plate is arranged above the lower plugging plate. A support plate is fixedly arranged at the top of the upper plugging plate, and is provided with a downward pressing driving part for driving the support plate to move up and down; according to the clamping device, the clamping driving component drives the rotating ring to rotate in a reciprocating mode, when the rotating ring rotates, one end of the clamping arm is driven to rotate, the clamping arm slides on the supporting ring, and therefore a clamping piece at the other end of the clamping arm gets close to or away from the lower plugging plate, and clamping or releasing of the end of a pressure-bearing valve at the top of the lower plugging plate is achieved; when the rotating ring rotates, all the clamping arms are driven to move synchronously, the clamping pieces are made to be close to or away from the lower plugging plate synchronously, the center position of the end of the pressure-bearing valve can coincide with the center position of the lower plugging plate during clamping, and accurate clamping and positioning are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of valve testing, and particularly relates to a performance detection device for a pressure-bearing valve. Background Art

[0002] The failure of a valve in a high-pressure environment may cause serious accidents. Therefore, during the production process of a pressure-bearing valve, it is necessary to test the pressure-bearing capacity of the valve under extreme pressure conditions to verify its pressure-bearing capacity.

[0003] In the prior art, a Chinese invention patent document with the authorization announcement number CN220960586U discloses an automatic pressure regulating device for a hydraulic valve test bench. Among them, three fixing plates are elastically supported by a group of independent springs respectively. Inevitably, there are differences in the elastic forces of the three groups of springs. When the valve is clamped between the fixing plates, due to the different elastic forces received around it, there will be an offset between the end of the valve and the pressing disc, affecting the sealing effect of the valve. Moreover, the lower end of the valve is elastically supported by springs around it, and the stability is poor.

[0004] Therefore, it is necessary to design a pressure test device for a pressure-bearing valve that can stably clamp the lower end of the valve and simultaneously achieve automatic centering during the clamping process to solve the current technical problems. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the invention provides a pressure test device for a pressure-bearing valve that can stably clamp the lower end of the valve and simultaneously achieve automatic centering during the clamping process.

[0006] The technical solution of the present invention is: a pressure testing device for pressure-bearing valves, comprising a test bench, a circular lower sealing plate is fixedly arranged on the top of the test bench, an air inlet pipe is centrally arranged on the lower sealing plate, a clamping mechanism is arranged on the outer side of the lower sealing plate, an upper sealing plate corresponding to the lower sealing plate is arranged above the lower sealing plate, a support plate is fixedly arranged on the top of the upper sealing plate, and a downward pressure driving component for driving the upper sealing plate to move up and down is arranged on the support plate; the clamping mechanism has a support ring concentrically sleeved on the outer side of the lower sealing plate, a swivel is concentrically sleeved on the outer side of the support ring, the support ring is fixedly arranged on the top of the test bench, and the swivel is rotatably arranged on the The top of the test bench is rotatably provided with a clamping driving component for driving the rotating ring to rotate, the top of the rotating ring is provided with at least three clamping arms in a circular array, one end of the clamping arm is rotatably connected to the rotating ring, the clamping arm is slidably connected to the supporting ring, and a clamping member is provided on the top of the clamping arm at one end away from the rotating ring; the clamping member has a supporting shaft vertically fixed on the top of the clamping arm, and a supporting tube is rotatably and slidably mounted on the outer side of the supporting shaft; an outer stop edge is fixedly provided on the outer side of the bottom end of the supporting tube, and an outer sleeve is mounted on the outer side of the supporting tube above the outer stop edge; the outer sleeve is a cylindrical structure made of polyurethane material.

[0007] A groove is coaxially formed at the bottom end of the support tube, a spring is sleeved on the outer side of the support shaft between the groove and the clamping arm, and an upper baffle is fixedly provided on the top end of the support shaft.

[0008] A sliding groove is provided along the clamp arm, a sliding rod is slidably arranged inside the sliding groove, the sliding rod is vertically fixed on the top of the support ring, and a limiting plate is fixedly arranged on the end of the sliding rod above the clamp arm.

[0009] The bottom of the rotating ring is rotatably arranged on the top of the test bench through a slewing bearing.

[0010] The downward pressing driving component is fixedly mounted above the test bench through a supporting frame, and the downward pressing driving component is a hydraulic cylinder.

[0011] One end of the clamping driving component is rotatably connected to the top of the test bench, and the other end of the clamping driving component is provided with a driving arm, and the driving arm is rotatably connected to the swivel; the clamping driving component is a hydraulic cylinder.

[0012] Beneficial effects of the present invention: (1) In the present invention, the clamping driving component drives the rotating ring to rotate reciprocatingly, and when the rotating ring rotates, one end of the clamping arm is driven to rotate. When one end of the clamping arm rotates, the clamping arm itself slides on the supporting ring, so that the clamping piece at the other end of the clamping arm approaches or moves away from the lower blocking plate, thereby clamping or releasing the end of the pressure-bearing valve on the top of the lower blocking plate; (2)When the swivel ring rotates, it drives all the clamping arms to move synchronously, so that the clamping members at the ends of the clamping arms approach or move away from the lower sealing plate synchronously. When clamping, the central position of the end of the pressure-bearing valve can coincide with the central position of the lower sealing plate, achieving precise clamping and positioning. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the pressure test device for the pressure-bearing valve in the present invention.

[0014] Figure 2 It is a schematic structural diagram of the clamping mechanism in the present invention.

[0015] Figure 3 It is a schematic structural diagram of the clamping member in the present invention. Detailed Embodiments

[0016] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not impose any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully convey the scope of the present invention to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0017] The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0018] As Figures 1 to 3As shown in the figure, a pressure test device for a pressure-bearing valve includes a test bench 1. A circular lower sealing plate 2 is fixedly arranged on the top of the test bench 1. An air inlet pipe 3 is arranged in the center of the lower sealing plate 2. A clamping mechanism 4 is arranged outside the lower sealing plate 2. An upper sealing plate 7 corresponding to the lower sealing plate 2 is arranged above the lower sealing plate 2. A support plate 8 is fixedly arranged on the top of the upper sealing plate 7. A downward pressing drive component 6 for driving the support plate 8 to move up and down is arranged on the support plate 8. During the test, one end of the pressure-bearing valve abuts against the lower sealing plate 7 and is clamped and fixed by the clamping mechanism 4. The downward pressing drive component 6 drives the support plate 8 and the upper sealing plate 7 to move downward, and the other end of the pressure-bearing valve is sealed by the upper sealing plate 7. At this time, a gas medium with a certain pressure (usually 1.1 times the design pressure) can be introduced into the pressure-bearing valve through the air inlet pipe 3, and the pressure is maintained for at least five minutes to observe whether the valve body of the pressure-bearing valve is deformed or leaking. If Figure 2 As shown in the figure, the clamping mechanism 4 has a support ring 42 concentrically sleeved outside the lower sealing plate 2. A rotating ring 41 is concentrically sleeved outside the support ring 42. The support ring 42 is fixedly arranged on the top of the test bench 1. A clamping drive component 47 for driving the rotating ring 41 to rotate is rotatably arranged on the test bench 1. The rotating ring 41 is rotatably arranged on the top of the test bench 1. At least three clamping arms 43 are arranged in a circumferential array on the top of the rotating ring 41. One end of the clamping arm 43 is rotatably connected to the rotating ring 41. The clamping arm 43 is slidably connected to the support ring. A clamping piece 46 is arranged at the top of the end of the clamping arm 43 facing away from the rotating ring. The clamping drive component 47 drives the rotating ring 41 to rotate back and forth. When the rotating ring 41 rotates, it drives one end of the clamping arm 43 to rotate. When one end of the clamping arm 43 rotates, the clamping arm 43 itself slides on the support ring 42, so that the clamping piece 46 at the other end of the clamping arm 43 approaches or moves away from the lower sealing plate 2, realizing the clamping or release of the end of the pressure-bearing valve on the top of the lower sealing plate 2. When the rotating ring 41 rotates, it drives all the clamping arms 43 to move synchronously, and further makes the clamping pieces 46 at the ends of the clamping arms 43 approach or move away from the lower sealing plate 2 synchronously. When clamping, the center position of the end of the pressure-bearing valve can coincide with the center position of the lower sealing plate 2, realizing precise clamping and positioning.

[0019] In some embodiments, the clamping piece 46 has a support shaft 461 vertically and fixedly arranged on the top of the clamping arm 43. A support cylinder 462 is rotatably and slidably sleeved outside the support shaft 461. During the clamping and releasing process, the support cylinder 462 rotates and slidably sleeves outside the support shaft 461, which can reduce the friction between the pressure-bearing valve and the clamping piece 46.

[0020] In some embodiments, a groove 463 is concentrically formed at the bottom end of the support cylinder 462. A spring 466 is sleeved outside the support shaft 461 between the groove 463 and the clamping arm 43. The top end of the support shaft 461 is fixedly provided with an upper baffle 464. During the process of the upper sealing plate 7 pressing down the pressure-bearing valve, under the action of pressure, the lower sealing plate 2 will deform, and the lower end of the pressure-bearing valve will move downward accordingly. The support cylinder 462 abuts against the lower end of the pressure-bearing valve. The support cylinder 462 can move downward along with the lower end of the pressure-bearing valve, compressing the spring 466 and reducing the friction between the pressure-bearing valve and the clamping member 46. When the clamping member 46 releases the lower end of the pressure-bearing valve, the spring 46 returns and pushes the support cylinder 462 to reset.

[0021] In some embodiments, an outer retaining edge 467 is fixedly provided on the outer side of the bottom end of the support cylinder 462. An outer sleeve 465 is sleeved on the outer side of the support cylinder 462 above the outer retaining edge 467. The outer sleeve 465 can prevent the lower end of the pressure-bearing valve from being damaged by clamping. Specifically, the outer sleeve 465 is a cylindrical structure made of polyurethane material, and the polyurethane material has excellent wear resistance.

[0022] In some embodiments, a chute 44 is formed along the clamping arm 43. A sliding rod is slidably arranged inside the chute 44. The sliding rod is vertically and fixedly arranged at the top of the support ring 42. A limiting plate 45 is fixedly arranged at the end of the sliding rod above the clamping arm 43.

[0023] In some embodiments, the bottom of the swivel ring 41 is rotatably arranged on the top of the test bench 1 through a slewing bearing.

[0024] In some embodiments, the downward pressing drive member 6 is fixedly mounted above the test bench 1 through the support frame 5. The downward pressing drive member 6 is a hydraulic cylinder. Specifically, the support frame 5 is an L-shaped plate structure, and one end of the support frame 5 is vertically and fixedly arranged on the top of the test bench 1.

[0025] In some embodiments, one end of the clamping drive member 47 is rotatably connected to the top of the test bench 1. The other end of the clamping drive member 47 is provided with a drive arm 48, and the drive arm 48 is rotatably connected to the swivel ring 41. The clamping drive member 47 is a hydraulic cylinder.

[0026] So far, the embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0027] The above-described embodiments merely represent some implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A pressure valve performance detection device, characterized in that: The test bench comprises a test bench, a circular lower blocking plate is fixedly arranged on the top of the test bench, an air inlet pipe is centrally arranged on the lower blocking plate, a clamping mechanism is arranged on the outer side of the lower blocking plate, an upper blocking plate corresponding to the lower blocking plate is arranged above the lower blocking plate, a support plate is fixedly arranged on the top of the upper blocking plate, and a downward pressure driving component for driving the upper blocking plate to move up and down is arranged on the support plate; the clamping mechanism comprises a supporting ring concentrically sleeved on the outer side of the lower blocking plate, a swivel is concentrically sleeved on the outer side of the supporting ring, the supporting ring is fixedly arranged on the top of the test bench, the swivel is rotatably arranged on the top of the test bench, and the test A clamping driving component for driving the rotating ring to rotate is rotatably arranged on the test bench, and at least three clamping arms are arranged in a circular array on the top of the rotating ring, one end of the clamping arm is rotatably connected to the rotating ring, and the clamping arm is slidably connected to the supporting ring, and a clamping member is arranged on the top of the clamping arm at one end away from the rotating ring; the clamping member has a supporting shaft vertically fixed on the top of the clamping arm, and a supporting tube is rotatably and slidably mounted on the outer side of the supporting shaft; an outer stop edge is fixedly arranged on the outer side of the bottom end of the supporting tube, and an outer sleeve is mounted on the outer side of the supporting tube above the outer stop edge; the outer sleeve is a cylindrical structure made of polyurethane material.

2. The pressure testing device for pressure-bearing valves according to claim 1, characterized in that: A groove is coaxially formed at the bottom end of the support tube, a spring is sleeved on the outer side of the support shaft between the groove and the clamping arm, and an upper baffle is fixedly provided on the top end of the support shaft.

3. The pressure testing device for pressure-bearing valves according to claim 1, characterized in that: A sliding groove is provided along the clamp arm, a sliding rod is slidably arranged inside the sliding groove, the sliding rod is vertically fixed on the top of the support ring, and a limiting plate is fixedly arranged on the end of the sliding rod above the clamp arm.

4. The pressure testing device for pressure-bearing valves according to claim 1, characterized in that: The bottom of the rotating ring is rotatably arranged on the top of the test bench through a slewing bearing.

5. The pressure testing device for pressure-bearing valves according to claim 1, characterized in that: The downward pressing driving component is fixedly mounted above the test bench through a supporting frame, and the downward pressing driving component is a hydraulic cylinder.

6. The pressure testing device for pressure-bearing valves according to claim 1, characterized in that: One end of the clamping driving component is rotatably connected to the top of the test bench, and the other end of the clamping driving component is provided with a driving arm, and the driving arm is rotatably connected to the swivel; the clamping driving component is a hydraulic cylinder.

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