Valve pressure test device for sealing detection

Abstract

The utility model provides a leakproofness detection valve pressure testing device which comprises a rack, a testing assembly used for detecting leakproofness of a valve is installed at the upper end of the rack and comprises a top plate, a sealing upper plate is fixed to the lower side of the top plate, and the lower side of the sealing upper plate movably abuts against the upper surface of a sealing lower plate. Compared with the prior art, the air leakage detection device has the advantages that the sealing upper plate and the sealing lower plate are arranged, if the valve is free of leakage and the tail end of the air pipe is placed in water, airflow movement cannot occur in the air leakage pieces, and the air leakage detection device can be used for detecting air leakage of the valve. The whole testing assembly is simple in structure, a plurality of valves can be placed at a time for synchronous detection, the efficiency of valve sealing performance detection can be improved, and the operation is simple and rapid.

Description

Technical Field

[0001] This utility model belongs to the technical field of valve pressure testing equipment, and specifically relates to a valve pressure testing device for sealing performance testing. Background Technology

[0002] Traditional pressure testing devices rely on a single pressure source for point-by-point testing, and the pressure regulation and stabilization process is time-consuming, making it difficult to quickly and conveniently test the sealing performance of multiple valves. Conventional solutions to these problems include introducing multi-channel pressure control systems for parallel testing, employing rapid charging / discharging techniques to shorten pressure regulation time, and combining sensor networks to monitor pressure changes in real time. However, these methods also have significant drawbacks: while multi-channel pressure control systems improve testing capabilities, the increased complexity of the equipment structure may lead to higher maintenance costs; rapid charging / discharging techniques, although reducing pressure regulation time, may be affected by pressure fluctuations in testing accuracy; and while sensor networks improve data acquisition efficiency, their reliability and anti-interference capabilities still need further verification. Therefore, we aim to design a valve pressure testing device with a novel structure to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a valve pressure testing device for sealing performance testing, so as to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a valve pressure testing device for sealing performance testing, comprising: a frame, a test component for sealing performance testing of valves is installed on the upper end of the frame, a slide rail module for driving the lower part of the test component to move back and forth is installed on the upper side of the frame, a mounting frame is installed on the upper side of the frame, and a cylinder for driving the upper part of the test component to move up and down is installed on the upper side of the mounting frame.

[0005] The test assembly includes a top plate, a sealing upper plate fixed to the lower side of the top plate, the lower side of the sealing upper plate movably abutting against the upper surface of the sealing lower plate, and a plurality of venting components for performing air leakage detection fixed to the rear side of the sealing lower plate. The lower side of the sealing plate is fixedly connected to the upper side of the bottom plate.

[0006] In a preferred embodiment, a shock-absorbing guide post is fixed on the left and right sides of the rear end of the frame, a connecting block is slidably installed on the upper side of the shock-absorbing guide post, a shock-absorbing spring is fitted on the lower side of the shock-absorbing guide post, and the inner end of the connecting block is fixedly connected to the side of the sealing upper plate.

[0007] In a preferred embodiment, the two shock-absorbing guide columns are respectively placed on the lower left and lower right sides of the mounting frame, and a controller for controlling the operation of the entire device is installed on the upper right side of the mounting frame.

[0008] In a preferred embodiment, the front side of the upper surface of the sealing lower plate is recessed downward from left to right to form six placement cavities, and the rear side of the upper surface of the sealing lower plate is recessed downward from left to right to form five placement cavities. The six placement cavities on the front side and the five placement cavities on the rear side are staggered and distributed.

[0009] In a preferred embodiment, each of the placement chambers is provided with a circular sealing gasket at the bottom to seal the lower opening of the valve, and a vent hole is formed extending backward from the bottom rear side of each placement chamber.

[0010] In a preferred embodiment, the rear end of each vent hole is fixedly connected to the front end of a venting component, the venting component including an adapter, the front end of the adapter being threadedly sealed to the inner wall of the rear end of the vent hole, the rear end of the adapter being threadedly sealed to the front end of a connector, and an air pipe being provided on the rear side of the connector, the end of the air pipe being placed in a water tank and needing to be submerged in water.

[0011] In a preferred embodiment, a plurality of sealing rings are embedded on the upper surface of the sealing lower plate. The number and distribution of the sealing rings are matched with the number and distribution of the placement cavities. The upper end height of the sealing ring is 1-2 mm greater than the height of the upper surface of the sealing lower plate, the diameter of the sealing ring is greater than the diameter of the placement cavity, and the axis of the sealing ring is collinear with the axis of the placement cavity.

[0012] In a preferred embodiment, the upper sealing plate has the same structure as the lower sealing plate. The lower surface of the upper sealing plate has multiple positioning cavities, each with a sealing gasket at its upper end. The middle of the sealing gasket is connected to an external air supply assembly via an air supply pipe. The portion of the air supply pipe at the top of the positioning cavity connects to a pre-reserved air passage hole in the middle of the sealing gasket. Each positioning cavity is also connected to an independent air supply pipe at its top. In actual use, the sealing gasket seals against the upper part of the valve. The pre-reserved air passage hole in the middle delivers externally supplied gas into the valve. The entire positioning cavity and the lower placement cavity form a sealed space after the upper and lower sealing plates abut against each other. If the valve is leak-free, placing the end of the air pipe in water will prevent airflow movement in the venting component, facilitating valve sealing testing. A pressure sensor can be installed in the pre-reserved air passage hole for valve internal pressure detection.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are: 1. By setting a sealing upper plate and a sealing lower plate, if the valve has no leakage, the end of the air pipe is placed in water, and no airflow will occur in the venting part, which facilitates the valve sealing test. The entire test component has a simple structure and can place multiple valves at one time for synchronous testing, which helps to improve the efficiency of valve sealing test, and the operation is simple and quick.

[0014] 2. By setting up a venting component and a venting hole connected to the placement chamber, if the valve has insufficient sealing after pressurization, it will release gas into the positioning chamber and the lower placement chamber after the sealing upper plate and sealing lower plate abut against each other to form a sealed space. At this time, the gas pressure balance is broken, and the gas pressure in the venting component increases accordingly, which causes the gas in the gas pipe to bubble in the external water tank. Then, the user can lock the valve in the corresponding placement chamber according to the specific gas pipe that is bubbling. In this way, the sealing performance of multiple valves can be conveniently tested. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a valve pressure testing device for sealing performance testing according to this utility model.

[0017] Figure 2 This is a schematic diagram of the frame structure of a valve pressure testing device for sealing performance testing according to this utility model.

[0018] Figure 3 This is a schematic diagram of the test component structure of a valve pressure testing device for sealing performance testing according to this utility model.

[0019] Figure 4 This is a schematic diagram of the sealing lower plate structure of a valve pressure testing device for sealing performance testing according to this utility model.

[0020] Figure 5 This is a schematic diagram of the venting component structure of a valve pressure testing device for sealing performance testing according to this utility model.

[0021] In the diagram, 100 is the frame, 110 is the slide rail module, 120 is the mounting bracket, 130 is the cylinder, 140 is the controller, and 150 is the shock-absorbing guide post.

[0022] 200-Test component, 210-Top plate, 220-Sealing upper plate, 230-Sealing lower plate, 231-Placement cavity, 232-Sealing ring, 233-Vent hole, 240-Bottom plate, 250-Vent component, 251-Adapter, 252-Connector, 253-Gas pipe. Detailed Implementation

[0023] 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.

[0024] As the first embodiment of this utility model:

[0025] Please see Figures 1 to 5 A valve pressure testing device for sealing performance testing includes: a frame 100, a test component 200 for sealing performance testing of valves is mounted on the upper end of the frame 100, a slide rail module 110 for driving the lower part of the test component 200 to move back and forth is mounted on the upper side of the frame 100, a mounting frame 120 is mounted on the upper side of the frame 100, and a cylinder 130 for driving the upper part of the test component 200 to move up and down is mounted on the upper side of the mounting frame 120.

[0026] The test assembly 200 includes a top plate 210, a sealing upper plate 220 fixed to the lower side of the top plate 210, the lower side of the sealing upper plate 220 movably abutting against the upper surface of the sealing lower plate 230, a plurality of venting components 250 for performing air leakage testing fixed to the rear side of the sealing lower plate 230, and the lower side of the sealing plate fixedly connected to the upper side of the bottom plate 240.

[0027] A shock-absorbing guide post 150 is fixed on the left and right sides of the rear end of the frame 100. A connecting block is slidably installed on the upper side of the shock-absorbing guide post 150, and a shock-absorbing spring is fitted on the lower side of the shock-absorbing guide post 150. The inner end of the connecting block is fixedly connected to the side of the sealing upper plate 220.

[0028] Two shock-absorbing guide columns 150 are respectively placed on the lower left and lower right sides of the mounting bracket 120. A controller 140 for controlling the operation of the entire equipment is installed on the upper right side of the mounting bracket 120.

[0029] The front side of the upper surface of the sealing lower plate 230 is recessed from left to right to form six placement cavities 231, and the rear side of the upper surface of the sealing lower plate 230 is recessed from left to right to form five placement cavities 231. The six placement cavities 231 on the front side and the five placement cavities 231 on the rear side are staggered and distributed.

[0030] Specifically, by setting up an upper sealing plate 220 and a lower sealing plate 230, in actual use, the front side of the upper surface of the lower sealing plate 230 is recessed downwards from left to right to form six placement cavities 231, and the rear side of the upper surface of the lower sealing plate 230 is recessed downwards from left to right to form five placement cavities 231. The six placement cavities 231 on the front side and the five placement cavities 231 on the rear side are staggered. Moreover, the structure of the upper sealing plate 220 is the same as that of the lower sealing plate 230, and multiple openings are formed on the lower surface of the upper sealing plate 220. Each positioning cavity has a sealing gasket at its upper end. The middle of the sealing gasket is connected to the external air supply assembly via an air supply pipe 253. The portion of the air supply pipe 253 at the top of the positioning cavity is connected to a pre-drilled air passage hole in the middle of the sealing gasket. Each positioning cavity is connected to an independent air supply pipe 253 at its top. Before testing, the top plate 210 and the sealing upper plate 220 are lifted using a cylinder 130, and multiple valves are placed in the placement cavity 231 (the shape of the placement cavity 231 and the positioning cavity can be customized). The shape of the sealing ring 232 can be cylindrical or square as long as it meets the requirements for placing the valve. The shape of the sealing ring 232 can be changed accordingly, but its function and working principle remain unchanged. Then, the cylinder 130 is used again to make the upper sealing plate 220 and the lower sealing plate 230 abut against each other. Since multiple sealing rings 232 are embedded and installed on the upper surface of the lower sealing plate 230, the number and distribution of the sealing rings 232 match the number and distribution of the placement cavity 231. The height of the upper end of the sealing ring 232 is 1-2mm greater than the height of the upper surface of the lower sealing plate 230. This makes the entire positioning cavity and the lower placement cavity 231 form a sealed space after the upper sealing plate 220 and the lower sealing plate 230 abut against each other. If there is no leakage in the valve, the end of the air pipe 253 is placed in water, and no airflow will occur in the venting part 250, which is convenient for the valve to be tested for sealing. The entire test assembly 200 has a simple structure and can place multiple valves at one time for simultaneous testing, which helps to improve the efficiency of valve sealing testing. It is also simple and quick to operate.

[0031] As a second embodiment of this utility model:

[0032] Please see Figures 1 to 5 Each placement chamber 231 has a circular sealing gasket at the bottom to seal the lower opening of the valve, and a vent hole 233 is formed through the rear side of the bottom of each placement chamber 231.

[0033] The rear end of each vent hole 233 is fixedly connected to the front end of a vent component 250. The vent component 250 includes an adapter 251. The front end of the adapter 251 is threadedly sealed to the inner wall of the rear end of the vent hole 233. The rear end of the adapter 251 is threadedly sealed to the front end of the connector 252. An air pipe 253 is provided on the rear side of the connector 252. The end of the air pipe 253 is placed in the water tank and needs to be submerged in water.

[0034] Multiple sealing rings 232 are embedded on the upper surface of the sealing lower plate 230. The number and distribution of the sealing rings 232 are matched with the number and distribution of the placement cavity 231. The upper end height of the sealing ring 232 is 1-2 mm greater than the height of the upper surface of the sealing lower plate 230. The diameter of the sealing ring 232 is greater than the diameter of the placement cavity 231, and the axis of the sealing ring 232 is collinear with the axis of the placement cavity 231.

[0035] The upper sealing plate 220 has the same structure as the lower sealing plate 230. The lower surface of the upper sealing plate 220 has multiple positioning cavities. Each positioning cavity has a sealing gasket at its upper end. The middle of the sealing gasket is connected to the external air supply component through an air supply pipe 253. The part of the air supply pipe 253 at the top of the positioning cavity is connected to the air passage hole reserved in the middle of the sealing gasket. Each positioning cavity is connected to an independent air supply pipe 253 at its top. In actual use, the sealing gasket is sealed against the upper part of the valve. The reserved air passage hole in the middle delivers the externally supplied gas to the inside of the valve. The entire positioning cavity and the lower placement cavity 231 form a sealed space after the upper sealing plate 220 and the lower sealing plate 230 abut against each other. If the valve has no leakage, the end of the air pipe 253 is placed in water. No airflow will occur in the venting component 250, which facilitates the sealing test of the valve. A pressure sensor can be installed in the reserved air passage hole for the detection of the internal pressure of the valve.

[0036] Based on the first embodiment described above, further, by setting a venting component 250 and a venting hole 233 communicating with the placement cavity 231, in actual use, if the valve has insufficient sealing after pressurization, it will release gas into the positioning cavity and the lower placement cavity 231 after the sealing upper plate 220 and sealing lower plate 230 abut against each other to form a sealed space. At this time, the gas pressure balance is broken, and the gas pressure in the venting component 250 increases accordingly, which causes the gas in the gas pipe 253 to bubble in the external water tank. Then, the user can lock the valve in the corresponding placement cavity 231 according to the specific gas pipe 253 that is bubbling, so as to conveniently test the sealing performance of multiple valves.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 valve pressure testing device for sealing performance testing, comprising: A frame (100) is characterized in that a test assembly (200) for testing the sealing performance of a valve is installed on the upper end of the frame (100), a slide rail module (110) for driving the lower part of the test assembly (200) to move back and forth is installed on the upper side of the frame (100), a mounting bracket (120) is installed on the upper side of the frame (100), and a cylinder (130) for driving the upper part of the test assembly (200) to move up and down is installed on the upper side of the mounting bracket (120); The test assembly (200) includes a top plate (210), a sealing upper plate (220) is fixed on the lower side of the top plate (210), the lower side of the sealing upper plate (220) is in movable contact with the upper surface of the sealing lower plate (230), a plurality of venting components (250) for performing air leakage detection are fixed on the rear side of the sealing lower plate (230), and the lower side of the sealing plate is fixedly connected to the upper side of the bottom plate (240).

2. The valve pressure testing device for sealing performance testing as described in claim 1, characterized in that: A shock-absorbing guide post (150) is fixed on the left and right sides of the rear end of the frame (100). A connecting block is slidably installed on the upper side of the shock-absorbing guide post (150), and a shock-absorbing spring is fitted on the lower side of the shock-absorbing guide post (150). The inner end of the connecting block is fixedly connected to the side of the sealing upper plate (220).

3. The valve pressure testing device for sealing performance testing as described in claim 2, characterized in that: The two shock-absorbing guide columns (150) are respectively placed on the lower left and lower right sides of the mounting bracket (120), and a controller (140) for controlling the operation of the entire equipment is installed on the upper right side of the mounting bracket (120).

4. The valve pressure testing device for sealing performance testing as described in claim 1, characterized in that: The upper surface of the lower sealing plate (230) is recessed downward from left to right to form six placement cavities (231), and the upper surface of the lower sealing plate (230) is recessed downward from left to right to form five placement cavities (231). The six placement cavities (231) on the front side and the five placement cavities (231) on the rear side are staggered.

5. The valve pressure testing device for sealing performance testing as described in claim 4, characterized in that: Each of the placement chambers (231) is provided with a circular sealing gasket at the bottom to seal the lower opening of the valve, and a vent hole (233) is formed through the rear side of the bottom of each placement chamber (231).

6. The valve pressure testing device for sealing performance testing as described in claim 5, characterized in that: The rear end of each of the vent holes (233) is fixedly connected to the front end of a vent component (250). The vent component (250) includes an adapter (251). The front end of the adapter (251) is threadedly sealed to the inner wall of the rear end of the vent hole (233). The rear end of the adapter (251) is threadedly sealed to the front end of the connector (252). An air pipe (253) is provided on the rear side of the connector (252). The end of the air pipe (253) is placed in a water tank and needs to be submerged in water.

7. A valve pressure testing device for sealing performance testing as described in claim 6, characterized in that: Multiple sealing rings (232) are embedded in the upper surface of the sealing lower plate (230). The number and distribution of the sealing rings (232) match the number and distribution of the placement cavity (231). The upper end height of the sealing ring (232) is 1-2 mm greater than the height of the upper surface of the sealing lower plate (230). The diameter of the sealing ring (232) is greater than the diameter of the placement cavity (231), and the axis of the sealing ring (232) is collinear with the axis of the placement cavity (231).

8. The valve pressure testing device for sealing performance testing as described in claim 7, characterized in that: The structure of the upper sealing plate (220) is the same as that of the lower sealing plate (230). The lower surface of the upper sealing plate (220) is provided with multiple positioning cavities. Each positioning cavity is provided with a sealing gasket at its upper end. The middle of the sealing gasket is connected to the external air supply assembly through an air supply pipe (253). The part of the air supply pipe (253) at the top of the positioning cavity is connected to the air passage hole reserved in the middle of the sealing gasket. The top of each positioning cavity is connected to an independent air supply pipe (253).

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