Leakage-proof detection device for valve

Abstract

The utility model belongs to the technical field of valve detection, and particularly discloses a valve leakage-proof detection device which comprises a detection pool, a fixed cylinder is fixedly installed in the detection pool, an air bag is arranged in the fixed cylinder, the inner side of the fixed cylinder is connected with a closed piston in a sliding mode, and the closed piston is connected with a valve. The outer surface of the fixed cylinder is fixedly connected with a first flange plate, one end, close to the first flange plate, of the fixed cylinder is detachably provided with a to-be-detected valve through a sealing connection mechanism, and the outer surface of the detection pool is fixedly connected with a guide plate. According to the valve leakage-proof detection device, two valves have a consistent problem under the same detection condition, which may indicate systematic defects or design problems, and synchronous detection can help technicians to quickly identify the trends and perform systematic correction, so that the test under the same environment and condition is ensured, and the detection efficiency is improved. And the problem of data inconsistency caused by time difference or environment change is avoided.

Description

Technical Field

[0001] The present application relates to the field of valve detection technology, and specifically to a valve leakage detection device. Background Art

[0002] Valves are devices used to control the flow of fluids (such as liquids, gases or steam). They control the operation of the system by opening, closing or regulating the flow of the fluid. Valves are widely used in industrial pipelines, water supply systems and various engineering facilities. Leakage detection of valves can ensure that the valves will not leak liquid or gas during operation, avoiding system pressure drops or fluid leakage.

[0003] Currently, the steps for testing valve air tightness are relatively cumbersome, making it difficult to conduct leak detection quickly and effectively. The detection efficiency is low, and usually one valve is tested at a time. It is impossible to conduct an intuitive and effective comparison of the leak detection of different valves, making it difficult to discover potential systemic problems or trends. Utility Model Content

[0004] In view of this, the purpose of the present invention is to solve the shortcomings of the background technology and to propose a valve leakage detection device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the utility model provides a valve leakage detection device, including a detection pool, a fixed cylinder fixedly installed inside the detection pool, an air bag is provided inside the fixed cylinder, a closed piston is slidably connected to the inner side of the fixed cylinder, a first flange is fixedly connected to the outer surface of the fixed cylinder, a valve to be tested is detachably installed on one end of the fixed cylinder close to the first flange through a sealing connection mechanism, a guide plate is fixedly connected to the outer surface of the detection pool, a driving frame is slidably connected to the inner side of the guide plate through a driving mechanism, and a frame shaft is fixedly penetrated through the inner side of the driving frame.

[0006] Preferably, the sealing connection mechanism includes a second flange plate arranged on the outer surface of the valve to be tested, a sealing ring is provided on the outer surface of the second flange plate, a screw is provided on the second flange plate, and the outer surface of the screw is threadedly sleeved with the inner surface of the first flange plate. The sealing connection mechanism can quickly and stably seal the valve to be tested to one end of the fixed cylinder, so that the fixed cylinder and the valve to be tested are in a sealed communication state.

[0007] Preferably, the driving mechanism includes a fixing frame fixedly connected to the detection pool, the inner surface of the fixing frame is rotatably connected to a rocker, one end of the rocker is provided with a crank handle, and the outer surface of the rocker is provided with a spiral sheet. The driving mechanism can drive the driving rod to move back and forth left and right under the relative limit of the guide plate, thereby linking the driving rod to move left and right.

[0008] Preferably, the detection pool is rotatably connected to a rotating shaft, the outer surface of the rotating shaft is fixedly sleeved with a gear disk, and the outer surface of the gear disk is meshed with the outer surface of the spiral plate, and a plurality of teeth are provided at the edge of the gear disk so as to adapt to the spiral plate and be driven smoothly.

[0009] Preferably, a ball bearing is provided on the toothed disc, a connecting rod is provided on the outer surface of the ball bearing, and a concave plate is fixedly connected to the bottom of the connecting rod.

[0010] Preferably, an inner shaft is fixedly provided on the inner side of the concave plate, a driving rod is rotatably connected to the outer surface of the inner shaft, and the outer surface of the driving rod is movably provided on the inner side of the driving frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In this valve leak detection device, if two valves exhibit consistent problems under the same test conditions, this may indicate a systematic defect or design problem. Synchronous testing can help technicians quickly identify these trends and make systematic corrections, ensuring that the tests are conducted in the same environment and conditions, avoiding data inconsistencies caused by time differences or environmental changes.

[0013] 2. The valve leak detection device can detect two groups of valves at the same time, which means that each test can process two devices at the same time, thereby shortening the total detection time by half. This parallel processing method significantly improves the overall detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the surface structure of the toothed disc of this application;

[0016] Figure 3 For this application Figure 1 Enlarged view of point a in the middle;

[0017] Figure 4 This is a schematic diagram of the valve connection structure to be tested in this application;

[0018] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder in this application.

[0019] Among them: 1. Detection cell; 2. Guide plate; 3. Fixed cylinder; 4. Airbag; 5. Closing piston; 6. First flange; 7. Sealing ring; 8. Second flange; 9. Screw; 10. Valve to be tested; 11. Fixed frame; 12. Rocker; 13. Crank handle; 14. Spiral plate; 15. Rotating shaft; 16. Gear plate; 17. Ball bearing; 18. Connecting rod; 19. Concave plate; 20. Inner shaft; 21. Drive rod; 22. Drive frame; 23. Frame shaft. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] See also Figure 1-5 A valve leakage detection device includes a detection pool 1, a fixed cylinder 3 is fixedly installed inside the detection pool 1, an air bag 4 is arranged inside the fixed cylinder 3, a closed piston 5 is slidably connected to the inner side of the fixed cylinder 3, a first flange 6 is fixedly connected to the outer surface of the fixed cylinder 3, and a valve 10 to be tested is detachably installed on one end of the fixed cylinder 3 close to the first flange 6 through a sealing connection mechanism, a guide plate 2 is fixedly connected to the outer surface of the detection pool 1, and a driving frame 22 is slidably connected to the inner side of the guide plate 2 through a driving mechanism, and a frame shaft 23 is fixedly penetrated through the inner side of the driving frame 22.

[0022] Through the above technical solution, during the process of leak detection of the valve to be tested 10 in the detection pool 1, the two groups of valves to be tested 10 can be stably connected to the ends of the two groups of fixed cylinders 3 through the sealing connection mechanism, so that the fixed cylinders 3 and the valve to be tested 10 are in a connected state, and the sealing of the connection is good. Then, water is injected into the detection pool 1, and the frame shaft 23 is driven by the driving mechanism, and the airbag 4 is used to close the piston 5 to perform leak detection on the valve to be tested 10.

[0023] Specifically, the sealing connection mechanism includes a second flange 8 arranged on the outer surface of the valve to be tested 10, the outer surface of the second flange 8 is provided with a sealing ring 7, the second flange 8 is provided with a screw 9, and the outer surface of the screw 9 is threadedly connected to the inner surface of the first flange 6.

[0024] Through the above technical solution, the screw 9 can pass through the second flange 8 and the first flange 6, and cooperate with the rubber sealing ring 7 and two sets of flanges to stably seal the connection between the valve to be tested 10 and the fixed cylinder 3.

[0025] Specifically, the driving mechanism includes a fixing frame 11 fixedly connected to the detection pool 1, the inner surface of the fixing frame 11 is rotatably connected to a rocker 12, one end of the rocker 12 is provided with a crank 13, and the outer surface of the rocker 12 is provided with a spiral piece 14.

[0026] Through the above technical solution, when the spiral piece 14 rotates with the rocker 12, it will drive the gear plate 16 through the teeth at the edge of the gear plate 16, so that it rotates synchronously with the rotating shaft 15.

[0027] Specifically, a rotating shaft 15 is rotatably connected to the detection cell 1 , and a toothed disc 16 is fixedly sleeved on the outer surface of the rotating shaft 15 , and the outer surface of the toothed disc 16 is meshedly connected with the outer surface of the spiral piece 14 .

[0028] Through the above technical solution, when the toothed disc 16 rotates, the ball 17 will perform a circular motion, thereby linking the connecting rod 18 to deflect its position.

[0029] Specifically, a ball 17 is provided on the toothed disc 16 , a connecting rod 18 is provided on the outer surface of the ball 17 , and a concave plate 19 is fixedly connected to the bottom of the connecting rod 18 .

[0030] Through the above technical solution, the ball 17 can rotate flexibly on the gear disc 16, and the top of the connecting rod 18 can be driven by changing the position of the ball 17.

[0031] Specifically, an inner shaft 20 is fixedly inserted into the inner side of the concave plate 19 , a driving rod 21 is rotatably connected to the outer surface of the inner shaft 20 , and the outer surface of the driving rod 21 is movably inserted into the inner side of the driving frame 22 .

[0032] Through the above technical solution, when the driving rod 21 is driven by the connecting rod 18, the concave plate 19 and the inner shaft 20, the driving rod 21 will move the driving frame 22, during which the guide plate 2 plays a relative limiting role on the driving frame 22.

[0033] Working principle: When the device is conducting a leak-proof test on the valve 10 to be tested in the test tank 1, the two groups of valves to be tested 10 can be stably connected to the ends of the two groups of fixed cylinders 3 through the sealing connection mechanism, so that the fixed cylinder 3 and the valve 10 to be tested are in a connected state, and the sealing of the connection is good, that is, screwing the screw 9 to pass through the second flange 8 and the first flange 6, so that the two groups of flanges are in a stably connected state, and the sealing ring 7 can make the fixed cylinder 3 and the valve 10 to be tested stably connected. Then, water is poured into the test tank 1. After the water surface completely covers the valve 10 to be tested, the crank handle 13 is shaken to drive the rocker 12 to rotate. During the rotation process, the rocker 12 drives the gear disc 16 through the spiral piece 14, so that the gear disc 16 rotates together with the rotating shaft 15. In this process, the ball 17 will move in a circle, and the gear disc 16 will drive the connecting rod 18 through the ball 17 during the rotation process, so that The connecting rod 18 drives the concave plate 19 to deflect, during which the driving rod 21 rotates along the inner shaft 20 inside the concave plate 19, and the driving rod 21 is used to toggle the driving frame 22, so that the driving frame 22 moves back and forth in the left and right directions under the relative limit of the guide plate 2. The driving frame 22 drives the frame shaft 23 to move synchronously during the left and right movement, so that the frame shaft 23 is respectively inserted into the corresponding fixed cylinder 3 during the left and right movement, and pushes the corresponding closing piston 5 to move. The closing piston 5 will gradually compress the airbag 4, thereby squeezing the airflow in the airbag 4 into the valve to be tested 10. If there is a leak in the valve to be tested 10, the airflow will generate bubbles from the corresponding position, and the test personnel can intuitively understand the sealing of the valve. During the process of the frame shaft 23 moving back and forth left and right to perform a leak-proof test on the two groups of valves to be tested 10, the test results can be directly displayed and compared intuitively.

[0034] In summary, improving detection efficiency and intuitively comparing the performance of the two groups of valves in this application are two important directions for optimizing the detection system. Through synchronous detection technology, not only can the detection speed and efficiency be significantly improved, but problems can also be discovered through real-time comparison, thereby improving the overall reliability and maintenance level of the system.

[0035] Although the embodiments of the present application 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 application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A valve anti-leakage detection device, comprising a detection cell (1), characterized in that: A fixed cylinder (3) is fixedly installed inside the detection pool (1), an air bag (4) is provided inside the fixed cylinder (3), a closed piston (5) is slidably connected to the inner side of the fixed cylinder (3), a first flange (6) is fixedly connected to the outer surface of the fixed cylinder (3), a valve to be tested (10) is detachably installed on one end of the fixed cylinder (3) close to the first flange (6) through a sealing connection mechanism, a guide plate (2) is fixedly connected to the outer surface of the detection pool (1), the inner side of the guide plate (2) is slidably connected to a drive frame (22) through a drive mechanism, and a frame shaft (23) is fixedly penetrated through the inner side of the drive frame (22).

2. A valve leakage detection device according to claim 1, characterized in that: The sealing connection mechanism comprises a second flange (8) arranged on the outer surface of the valve to be tested (10), a sealing ring (7) being arranged on the outer surface of the second flange (8), a screw (9) being arranged on the second flange (8), and the outer surface of the screw (9) being threadedly sleeved with the inner surface of the first flange (6).

3. A valve anti-leakage detection device according to claim 1, characterized in that: The driving mechanism comprises a fixing frame (11) fixedly connected to the detection pool (1); the inner surface of the fixing frame (11) is rotatably connected to a rocker (12); one end of the rocker (12) is provided with a crank (13); and the outer surface of the rocker (12) is provided with a spiral piece (14).

4. A valve leakage detection device according to claim 1, characterized in that: The detection cell (1) is rotatably connected to a rotating shaft (15), and a toothed disc (16) is fixedly sleeved on the outer surface of the rotating shaft (15), and the outer surface of the toothed disc (16) is meshedly connected to the outer surface of the spiral sheet (14).

5. A valve anti-leakage detection device according to claim 4, characterized in that: A ball (17) is provided on the toothed disc (16), a connecting rod (18) is provided on the outer surface of the ball (17), and a concave plate (19) is fixedly connected to the bottom of the connecting rod (18).

6. A valve anti-leakage detection device according to claim 5, characterized in that: An inner shaft (20) is fixedly provided on the inner side of the concave plate (19), and a driving rod (21) is rotatably connected to the outer surface of the inner shaft (20), and the outer surface of the driving rod (21) is movably provided on the inner side of the driving frame (22).

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