An automatic control test bench device for testing the full performance of valves

Abstract

The present invention relates to an automatic control test bench device for detecting the full performance of a valve. Specifically, the present invention provides an automatic control test bench device for detecting the full performance of a valve, the device comprising a torque actuator, a valve clamping device, a leak detection device, an air extraction device, an air supply device and a water supply device, the leak detection device comprising a water-tight leak detection device and an air-tight leak detection device. The automatic control test bench device for detecting the full performance of a valve described in the present invention can automatically complete the test of the air tightness, water tightness, pressure resistance of the valve housing and other performances of the valve, and the performance measurement results are objective and accurate, thereby greatly saving manpower and improving the efficiency of valve measurement.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, in particular to an automatic control test bench device for detecting the full performance of a valve. Background Art

[0002] The valve test bench is a tool for testing valve performance. Currently, each performance indicator of the valve (such as air tightness, water tightness, pressure resistance of the valve housing, etc.) is tested using a separate device.

[0003] In the entire process of testing valve performance with existing technology, the operation steps and data reading are all completed manually. When all the test indicators are completed, the tested valve needs to be moved and the data read in multiple devices. This process will inevitably lead to manual operation errors, which will leave huge hidden dangers during the use of valves operating in high-pressure and high-water density environments. How to accurately and quickly read the key data of the valve, improve work efficiency, and avoid detection errors has become a problem that needs to be solved urgently.

[0004] Therefore, there is a need in the art to develop a simple, efficient, and automatic test bench device for detecting the full performance of a valve. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic control test bench device for testing the full performance of a valve, which can fully automatically complete the performance tests of the valve such as the air tightness, water tightness, and pressure resistance of the valve housing.

[0006] In a first aspect of the present invention, there is provided an automatic control test bench device for detecting the full performance of a valve, the device comprising a torque actuator, a valve clamping device, a leak detection device, an air extraction device, an air supply device and a water supply device, the leak detection device comprising a water seal leak detection device and an air seal leak detection device;

[0007] The torque actuator comprises a plate claw 11 for adjusting the opening and closing of the valve;

[0008] The valve clamping device comprises a first sealing member 21 and a second sealing member 22 connected to the pipeline port of the valve to be tested, each of the first sealing member and the second sealing member is provided with a through hole 23, the through hole of the first sealing member and the through hole of the second sealing member are connected through a first pipeline 24, and the first pipeline is provided with a first drain and exhaust valve 25 and a second drain and exhaust valve 26;

[0009] The water-tight leak detection device comprises a first water drop counter 31 and a second water drop counter 32. The first water drop counter is connected to the first pipeline between the first seal and the first drain and exhaust valve via a first leak detection drainage pipe 33; the second water drop counter is connected to the first pipeline between the second seal and the second drain and exhaust valve via a second leak detection drainage pipe 34; a first water-tight switch valve 35 is provided on the first leak detection drainage pipe, and a second water-tight switch valve 36 is provided on the second leak detection drainage pipe;

[0010] The airtight leak detection device comprises a first bubble counter 41 and a second bubble counter 42. The first bubble counter is connected to the first pipeline between the first sealing member and the first drain and exhaust valve via a third leak detection drainage pipe 43; the second bubble counter is connected to the first pipeline between the second sealing member and the second drain and exhaust valve via a fourth leak detection drainage pipe 44; the third leak detection drainage pipe is provided with a first airtight switch valve 45, and the fourth leak detection drainage pipe is provided with a second airtight switch valve 46;

[0011] The device further comprises a first unloading valve 51 and a second unloading valve 52, wherein the first unloading valve is connected to the first pipeline between the first sealing member and the first drain and exhaust valve via a second pipeline 53, and the second unloading valve is connected to the first pipeline between the second sealing member and the second drain and exhaust valve via a third pipeline 54;

[0012] The air extraction device 60 , the air supply device 70 and the water supply device 80 are connected to the first pipeline between the first drain and exhaust valve and the second drain and exhaust valve through the fourth pipeline 61 , the fifth pipeline 71 and the sixth pipeline 81 respectively.

[0013] In another preferred embodiment, the through hole is communicated with the pipeline opening of the valve to be tested.

[0014] In another preferred example, on the first pipeline, the first drain and exhaust valve is closer to the first sealing member than the second drain and exhaust valve.

[0015] In another preferred example, on the first pipeline, the second drain and exhaust valve is closer to the second sealing member than the first drain and exhaust valve.

[0016] In another preferred embodiment, the valve is a gate valve, a ball valve, or a stop valve.

[0017] In another preferred embodiment, the fourth pipeline is provided with a first gas valve 62;

[0018] The fifth pipeline is provided with a second gas valve 72; and / or

[0019] The sixth pipeline is provided with a liquid valve 82 .

[0020] In another preferred embodiment, the second pipeline is provided with a first pressure sensor 55; and / or

[0021] The third pipeline is provided with a second pressure sensor 56 .

[0022] In another preferred embodiment, the first pressure sensor 55 includes a gas pressure sensor and / or a liquid pressure sensor; and / or

[0023] The second pressure sensor 56 includes a gas pressure sensor and / or a liquid pressure sensor.

[0024] In another preferred example, the first pressure sensor is arranged between the first unloading valve and the connection point between the second pipeline and the first pipeline.

[0025] In another preferred example, the second pressure sensor is arranged between the second unloading valve and the connection point between the third pipeline and the first pipeline.

[0026] In another preferred embodiment, the first water drop counter and the second water drop counter respectively include an infrared transmitter 37 and an infrared receiver 38 for detecting falling water droplets.

[0027] In another preferred embodiment, the infrared transmitter and the infrared receiver are close to the pipe opening of the first leak detection drainage pipe.

[0028] In another preferred embodiment, the infrared transmitter and the infrared receiver are close to the pipe opening of the second leak detection drainage pipe.

[0029] In another preferred example, the first bubble counter and the second bubble counter respectively include a water tank, an infrared transmitter and an infrared receiver, and the infrared transmitter and the infrared receiver are used to detect bubbles entering the water tank from the third leak detection drainage tube and the fourth leak detection drainage tube.

[0030] In another preferred embodiment, when the full performance of the valve is measured, water is added to the water tank so that the water level in the water tank is located above the pipe openings of the third leak detection drainage pipe and the fourth leak detection drainage pipe.

[0031] In another preferred example, the torque execution device also includes a torque sensor, a position sensor, a universal joint and a lever, and the torque sensor is connected to the position sensor below, the position sensor is connected to the universal joint below, the universal joint is connected to the lever below, and the lever is connected to a claw below.

[0032] In another preferred example, the torque execution device also includes a hydraulic motor and / or a reducer.

[0033] In another preferred embodiment, the hydraulic motor provides power for the torque actuator.

[0034] In another preferred embodiment, the device is further provided with a "micro" lens for observing the inner cavity wall of the valve to be tested.

[0035] In another preferred embodiment, the “micro” lens is arranged at the through hole.

[0036] In another preferred embodiment, the device is further provided with an air pressure gauge for detecting the internal air pressure of the valve to be tested and a hydraulic pressure gauge for detecting the internal hydraulic pressure of the valve to be tested.

[0037] In another preferred embodiment, the air pressure gauge and the hydraulic pressure gauge are arranged at the through hole.

[0038] In another preferred example, the air pressure gauge and the hydraulic pressure gauge are arranged in the first pipeline.

[0039] In another preferred embodiment, the device further comprises a control unit for automatically controlling the full performance detection of the valve.

[0040] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as embodiments) can be combined with each other to form a new or preferred technical solution. Due to space limitations, they will not be described one by one here. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Schematic diagram of the structure of the automatic control test bench equipment for testing the full performance of the valve.

[0042] In the accompanying drawings, each number represents:

[0043] 11 is a plate claw, 21 is a first sealing member, 22 is a second sealing member, 23 is a through hole, 24 is a first pipeline, 25 is a first drain and exhaust valve, 26 is a second drain and exhaust valve, 31 is a first water drop counter, 32 is a second water drop counter, 33 is a first leak detection drainage pipe, 34 is a second leak detection drainage pipe, 35 is a first water-tight switch valve, 36 is a second water-tight switch valve, 37 is an infrared transmitter, 38 is an infrared receiver, 41 is a first bubble counter, 42 is a second bubble counter, 43 is a third leak detection drainage pipe, 44 is a fourth leak detection drainage pipe, 45 is a first air-tight switch valve, 46 is a second air-tight switch valve, 51 is a first unloading valve, 52 is a second unloading valve, 53 is a second pipeline, 54 is a third pipeline, 55 is a first pressure sensor, 56 is a second pressure sensor, 60 is an air extraction device, 61 is a fourth pipeline, 62 is a first gas valve, 70 is a gas supply device, 71 is the fifth pipeline, 72 is the second gas valve, 80 is the water supply device, 81 is the sixth pipeline, 82 is the liquid valve, 90 is the valve and 91 is the valve plate. DETAILED DESCRIPTION

[0044] After extensive and in-depth research, the inventor unexpectedly developed an automatic control test bench device for detecting the full performance of valves. The device includes a torque actuator, a valve clamping device, a leak detection device, an air extraction device, an air supply device and a water supply device. The leak detection device includes a water-tight leak detection device and an air-tight leak detection device. The automatic control test bench device for detecting the full performance of valves described in the present invention can automatically complete the test of the air tightness, water tightness, pressure resistance of the valve housing and other performances of the valve, and the performance measurement results are objective and accurate, thereby greatly saving manpower and improving the efficiency of valve measurement. On this basis, the inventor completed the present invention.

[0045] the term

[0046] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0047] As used herein, the terms "include", "comprises", and "comprising" are used interchangeably, and include not only open definitions, but also semi-closed and closed definitions. In other words, the terms include "consisting of", "consisting essentially of".

[0048] As used herein, the terms "upper", "lower", "inner", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0049] The terms "first", "second", "third", "fourth", "fifth" and "sixth" etc. are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0050] As used herein, the terms “connected” and “connected” should be understood in a broad sense, and may be a fixed connection, a detachable connection, or an integral connection.

[0051] As used herein, the terms "automatic control test bench equipment for detecting the full performance of a valve" and "automatic control test bench equipment" are used interchangeably.

[0052] The following is combined with Figure 1The preferred embodiments of the present invention are described in detail so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the scope of protection of the present invention. The drawings are only used for illustrative purposes and cannot be understood as limitations on this patent; in order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted; the same or similar numbers correspond to the same or similar parts; the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent.

[0053] All operating steps of traditional valve test benches are manual operations. To increase the pressure of the pressure claws, you need to click a button according to the pressure comparison table to see if the pressure gauge reaches the corresponding pressure value. When pressurizing, you need to first set the electric contact pressure gauge to the required pressure value and then manually click the pressure button. When maintaining the pressure of the shell, you need to manually observe whether the pressure gauge pointer drops. During the sealing test, you need to manually open and close the valve and then set the pressure gauge and click the water pressure button. During the sealing test, you need to manually observe the leakage, etc. All steps require manual participation.

[0054] In order to overcome the problems of low efficiency, high potential safety hazard, high error rate, etc. in the working process of the existing valve test bench, the present invention provides an automatic control test bench device for detecting the full performance of the valve.

[0055] Automatic control test bench equipment for testing the full performance of valves

[0056] The present invention provides an automatic control test bench device for detecting the full performance of a valve. The device comprises a torque actuator, a valve clamping device, a leak detection device, an air extraction device, an air supply device and a water supply device. The leak detection device comprises a water-tight leak detection device and an air-tight leak detection device.

[0057] Torque actuator

[0058] The torque actuator described in the present invention can realize the opening and closing of the valve. There is no special limitation on the torque actuator, and conventional torque actuators in the art can be selected as long as the purpose of the present invention is tested.

[0059] Typically, the torque actuator comprises a claw 11 for adjusting the opening and closing of the valve.

[0060] Preferably, the torque execution device also includes a torque sensor, a position sensor, a universal joint and a lever, and the torque sensor is connected to the position sensor below, the position sensor is connected to the universal joint below, the universal joint is connected to the lever below, and the lever is connected to a claw below.

[0061] In another preferred example, the torque execution device also includes a hydraulic motor and / or a reducer.

[0062] In another preferred embodiment, the hydraulic motor provides power for the torque actuator.

[0063] Valve clamping device

[0064] In the automatic control test bench equipment for detecting the full performance of a valve described in the present invention, the valve clamping device includes a first seal 21 and a second seal 22 connected to the pipeline port of the valve to be tested, the first seal and the second seal are each provided with a through hole 23, the through hole of the first seal and the through hole of the second seal are connected through a first pipeline 24, and a first drain and exhaust valve 25 and a second drain and exhaust valve 26 are provided on the first pipeline.

[0065] In another preferred example, on the first pipeline, the first drain and exhaust valve is closer to the first sealing member than the second drain and exhaust valve.

[0066] In another preferred example, on the first pipeline, the second drain and exhaust valve is closer to the second sealing member than the first drain and exhaust valve.

[0067] Water seal leak detection device

[0068] In the automatic control test bench device for detecting the full performance of a valve described in the present invention, the water seal leak detection device can be used to detect the water seal when the valve is closed.

[0069] Typically, the water-tight leak detection device includes a first water drop counter 31 and a second water drop counter 32, wherein the first water drop counter is connected to the first pipeline between the first seal and the first drain and exhaust valve via a first leak detection drainage tube 33; the second water drop counter is connected to the first pipeline between the second seal and the second drain and exhaust valve via a second leak detection drainage tube 34; a first water-tight switch valve 35 is provided on the first leak detection drainage tube, and a second water-tight switch valve 36 is provided on the second leak detection drainage tube.

[0070] In another preferred embodiment, the first water drop counter and the second water drop counter respectively include an infrared transmitter 37 and an infrared receiver 38 for detecting falling water droplets.

[0071] In another preferred embodiment, the infrared transmitter and the infrared receiver are close to the pipe opening of the first leak detection drainage pipe.

[0072] In another preferred embodiment, the infrared transmitter and the infrared receiver are close to the pipe opening of the second leak detection drainage pipe.

[0073] Airtight leak detection device

[0074] In the automatic control test bench device for detecting the full performance of a valve described in the present invention, the airtight leak detection device can be used to detect the airtightness of the valve when it is closed.

[0075] Typically, the airtight leak detection device includes a first bubble counter 41 and a second bubble counter 42, wherein the first bubble counter is connected to the first pipeline between the first sealing member and the first drain and exhaust valve via a third leak detection drainage tube 43; the second bubble counter is connected to the first pipeline between the second sealing member and the second drain and exhaust valve via a fourth leak detection drainage tube 44; a first airtight switch valve 45 is provided on the third leak detection drainage tube, and a second airtight switch valve 46 is provided on the fourth leak detection drainage tube.

[0076] In another preferred example, the first bubble counter and the second bubble counter respectively include a water tank, an infrared transmitter and an infrared receiver, and the infrared transmitter and the infrared receiver are used to detect bubbles entering the water tank from the third leak detection drainage tube and the fourth leak detection drainage tube.

[0077] The first unloading valve and the second unloading valve

[0078] Preferably, in the automatic control test bench equipment for detecting the full performance of valves described in the present invention, the equipment also includes a first unloading valve 51 and a second unloading valve 52, the first unloading valve is connected to the first pipeline between the first sealing member and the first drain and exhaust valve through a second pipeline 53, and the second unloading valve is connected to the first pipeline between the second sealing member and the second drain and exhaust valve through a third pipeline 54.

[0079] In another preferred embodiment, the first unloading valve and the second unloading valve can be used to unload the pipeline system (such as the first pipeline, the first leak detection drainage pipe, the second leak detection drainage pipe, the third leak detection drainage pipe and the third leak detection drainage pipe) and the water pressure and air pressure in the valve cavity.

[0080] In another preferred embodiment, the second pipeline is provided with a first pressure sensor 55. Preferably, the first pressure sensor 55 includes a gas pressure sensor and / or a liquid pressure sensor.

[0081] In another preferred embodiment, the third pipeline is provided with a second pressure sensor 56. Preferably, the second pressure sensor 56 includes a gas pressure sensor and / or a liquid pressure sensor.

[0082] The gas pressure sensor and the liquid pressure sensor can be used to sense the water pressure and air pressure in the pipeline system (such as the first pipeline, the first leak detection drainage tube, the second leak detection drainage tube, the third leak detection drainage tube and the third leak detection drainage tube) and the valve cavity.

[0083] In another preferred example, the first pressure sensor is arranged between the first unloading valve and the connection point between the second pipeline and the first pipeline.

[0084] In another preferred example, the second pressure sensor is arranged between the second unloading valve and the connection point between the third pipeline and the first pipeline.

[0085] Air extraction, air supply and water supply

[0086] In the automatic control test bench equipment for detecting the full performance of valves described in the present invention, the air extraction device, air supply device and water supply device can be used to extract air, supply air and supply water to the pipeline system (such as the first pipeline, the first leak detection drainage tube, the second leak detection drainage tube, the third leak detection drainage tube and the third leak detection drainage tube) and the valve cavity respectively.

[0087] Typically, the air extraction device 60 , the air supply device 70 and the water supply device 80 are connected to the first pipeline between the first drain and exhaust valve and the second drain and exhaust valve through the fourth pipeline 61 , the fifth pipeline 71 and the sixth pipeline 81 , respectively.

[0088] In another preferred embodiment, a first gas valve 62 is provided on the fourth pipeline.

[0089] In another preferred embodiment, a second gas valve 72 is provided on the fifth pipeline.

[0090] In another preferred embodiment, a liquid valve 82 is provided on the sixth pipeline.

[0091] Micro lens

[0092] Preferably, the device is also provided with a "micro" lens for observing the inner cavity wall of the valve to be tested. The "micro" lens can observe the changes of the inner cavity wall of the valve under low pressure, high pressure and high hydraulic pressure conditions.

[0093] In another preferred embodiment, the “micro” lens is arranged at the through hole.

[0094] Other components

[0095] In the automatic control test bench device for detecting the full performance of a valve described in the present invention, the device may also be provided with an air pressure gauge for detecting the internal air pressure of the valve to be tested and a hydraulic pressure gauge for detecting the internal hydraulic pressure of the valve to be tested.

[0096] In another preferred embodiment, the air pressure gauge and the hydraulic pressure gauge are arranged at the through hole.

[0097] In another preferred example, the air pressure gauge and the hydraulic pressure gauge are arranged in the first pipeline.

[0098] In another preferred embodiment, the device further includes a control unit for automatically controlling the full performance test of the valve. The control unit can automatically control the operation of the device and automatically measure the performance indicators of the valve (such as air tightness, water tightness, pressure resistance of the valve housing, etc.) without manual intervention or manual supervision. The computer program can automatically complete the test and finally issue an experimental report, thereby greatly reducing manual participation and improving the efficiency and accuracy of valve performance testing.

[0099] There is no particular limitation on the valves applicable to the automatic control test bench device for detecting the full performance of valves described in the present invention. For example, the valve may be a gate valve, a ball valve, a stop valve, etc.

[0100] It should be understood in the present invention that there is no particular limitation on the structure of all valves (such as drain and exhaust valves, water-tight switch valves, air-tight switch valves, unloading valves, gas valves and liquid valves), as long as the purpose of the present invention is met, and they can be common valves on the market. The valves of the present invention (such as drain and exhaust valves, water-tight switch valves, air-tight switch valves, unloading valves, gas valves and liquid valves) can be the same or different valves, and these valves can close and open pipelines (such as the first, second, third, fourth, fifth and sixth pipelines, and leak detection drainage tubes).

[0101] The main advantages of the present invention include:

[0102] 1. The present invention provides a test bench device with a unique structure for automatically detecting the performance parameters of large valves (such as air tightness, water tightness, pressure resistance of valve housing, etc.). The device described in the present invention can automatically complete the valve performance measurement under the control of a preset program in an environment without human intervention, and the valve performance measurement results are objective and accurate.

[0103] 2. The automatic control test bench device for detecting the full performance of a valve described in the present invention can automatically detect the performance of the valve, thereby overcoming the problems of low working efficiency, high safety hazards, and high error rate of the valve test bench in the prior art that requires manual operation.

[0104] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples that do not specify specific conditions are usually based on conventional conditions or the conditions recommended by the manufacturer. Unless otherwise stated, percentages and parts are calculated by weight.

[0105] Example 1

[0106] Embodiment 1 provides an automatic control test bench device for detecting the full performance of a valve. The device structure is referenced Figure 1 As shown, in order to facilitate understanding of the device and its working principle of Example 1, Figure 1The device includes a valve 90 connected to a first seal 21 and a second seal 22 of the device;

[0107] The equipment includes a torque actuator, a valve clamping device, a leak detection device, an air extraction device, an air supply device and a water supply device, and the leak detection device includes a water-sealed leak detection device and an air-sealed leak detection device;

[0108] The torque actuator comprises a plate claw 11 for adjusting the opening and closing of the valve;

[0109] The valve clamping device comprises a first sealing member 21 and a second sealing member 22 connected to the pipeline port of the valve to be tested, each of the first sealing member and the second sealing member is provided with a through hole 23, the through hole of the first sealing member and the through hole of the second sealing member are connected through a first pipeline 24, and the first pipeline is provided with a first drain and exhaust valve 25 and a second drain and exhaust valve 26;

[0110] The water-tight leak detection device comprises a first water drop counter 31 and a second water drop counter 32. The first water drop counter is connected to the first pipeline between the first seal and the first drain and exhaust valve through a first leak detection drainage pipe 33; the second water drop counter is connected to the first pipeline between the second seal and the second drain and exhaust valve through a second leak detection drainage pipe 34; the first water-tight switch valve 35 is provided on the first leak detection drainage pipe, and the second water-tight switch valve 36 is provided on the second leak detection drainage pipe. The first water drop counter and the second water drop counter respectively comprise an infrared transmitter 37 and an infrared receiver 38 for detecting water droplets.

[0111] The airtight leak detection device comprises a first bubble counter 41 and a second bubble counter 42. The first bubble counter is connected to the first pipeline between the first seal and the first drain and exhaust valve through a third leak detection drainage pipe 43; the second bubble counter is connected to the first pipeline between the second seal and the second drain and exhaust valve through a fourth leak detection drainage pipe 44; the third leak detection drainage pipe is provided with a first airtight switch valve 45, and the fourth leak detection drainage pipe is provided with a second airtight switch valve 46. The first bubble counter and the second bubble counter respectively comprise a water tank, an infrared transmitter and an infrared receiver, and the infrared transmitter and the infrared receiver are used to detect bubbles entering the water tank from the third leak detection drainage pipe and the fourth leak detection drainage pipe. When the full performance of the valve is measured, water is added to the water tank so that the water surface in the water tank is located above the pipe openings of the third leak detection drainage pipe and the fourth leak detection drainage pipe.

[0112] The device further comprises a first unloading valve 51 and a second unloading valve 52, wherein the first unloading valve is connected to the first pipeline between the first sealing member and the first drain and exhaust valve via a second pipeline 53, and the second unloading valve is connected to the first pipeline between the second sealing member and the second drain and exhaust valve via a third pipeline 54;

[0113] The air extraction device 60, the air supply device 70 and the water supply device 80 are connected to the first pipeline between the first drain and exhaust valve and the second drain and exhaust valve through the fourth pipeline 61, the fifth pipeline 71 and the sixth pipeline 81 respectively. The fourth pipeline is provided with a first gas valve 62, the fifth pipeline is provided with a second gas valve 72, and the sixth pipeline is provided with a liquid valve 82;

[0114] The device is also provided with a "micro" lens for observing the inner cavity wall of the valve to be tested. The "micro" lens can observe the inner cavity wall of the valve to be tested.

[0115] Taking the gate valve as an example, the basic principle of the automatic control test bench equipment for testing the full performance of the valve described in Example 1 for testing the full performance of the valve includes:

[0116] Before the full performance test of the valve, all valves are in the open state.

[0117] 1. The valve plate 91 of the valve 90 is in an open state (the valve plate is open so that the liquid or gas in the valve can flow freely, the first water-tight switch valve 35, the second water-tight switch valve 36, the first air-tight switch valve 45, the second air-tight switch valve 46, the first unloading valve 51, and the second unloading valve 52 are closed, the first drain and exhaust valve 25 and the second drain and exhaust valve 26 are opened, and the exhaust device 60 exhausts air to reduce the gas pressure in the valve cavity to be tested, and the changes of the outer shell of the valve to be tested and the inner wall of the cavity are observed (such as whether deformation, rupture, etc. occur, so as to determine the maximum vacuum degree that the inner cavity of the valve can withstand;

[0118] 2. Then the air extraction device 60 stops running, and the air supply device 70 starts supplying air, so that the gas pressure in the valve cavity to be tested increases, and the changes of the inner wall of the valve cavity to be tested (such as whether deformation, rupture, etc.) are observed, so as to determine the maximum air pressure that the valve cavity can withstand;

[0119] 3. Again, the air supply device 70 stops supplying air, opens the first unloading valve 51 and / or the second unloading valve 52, so that the air pressure in the valve cavity returns to normal atmospheric pressure, and closes the valve plate of the valve through the plate claw (the valve plate is closed to block the free flow of liquid or gas in the valve). The valve plate is closed to divide the valve cavity into the left cavity of the valve (i.e., the cavity connected to the first sealing member 21) and the right cavity of the valve (i.e., the cavity connected to the second sealing member 22). The first unloading valve 51, the second unloading valve 52 and the first drain and exhaust valve 25 are closed, and the first air-tight switch valve 45 is opened. The air supply device 70 starts supplying air, so that the gas pressure in the right cavity of the valve is greater than the gas pressure in the left cavity of the valve. The first bubble counter 41 detects whether there are bubbles flowing out of the third leak detection drainage tube 43. If there are no bubbles, it indicates that after the valve plate is closed, the high-pressure air tightness from the right cavity of the valve to the left cavity of the valve is good and there is no leakage.

[0120] Then the air supply device 70 stops supplying air, punches the second unloading valve 52, and after the air pressure in the right inner cavity of the valve returns to normal atmospheric pressure, closes the first air-tight switch 45, the second drain and exhaust valve 26, and the second unloading valve 52, opens the first drain and exhaust valve 25 and the second air-tight switch valve 46, and the air supply device 70 starts supplying air, so that the air pressure in the left inner cavity of the valve is greater than the air pressure in the right inner cavity of the valve, and the second bubble counter 42 detects whether there are bubbles flowing out of the fourth leak detection drainage pipe 44. If there are no bubbles, it indicates that after the valve plate is closed, the high-pressure air tightness from the left inner cavity of the valve to the right inner cavity of the valve is good and there is no leakage;

[0121] 4. Then, the air supply device 70 stops supplying air, punches the first unloading valve 51, and after the air pressure in the left inner cavity of the valve returns to normal atmospheric pressure, closes the second airtight switch valve 46 and the first unloading valve 51, opens the second drainage and exhaust valve 26, and then the water supply device supplies water, so that the left inner cavity and the right inner cavity of the valve are filled with water (normal water pressure), and then closes the first drainage and exhaust valve 25, opens the first water-tight switch valve 35, and the water supply device 80 supplies high-pressure water, so that the water pressure in the right inner cavity of the valve is greater than the water pressure in the left inner cavity of the valve, and the first water drop counter 31 detects whether there are water drops flowing out of the first leak detection drainage pipe 33. If there are no water drops, it indicates that after the valve plate is closed, the high-pressure water tightness from the right inner cavity of the valve to the left inner cavity of the valve is good and there is no leakage;

[0122] Then, the water supply device 80 stops supplying water, punches the second unloading valve 52, and after the water pressure in the right inner cavity of the valve returns to normal water pressure, closes the first water sealing switch valve 35, the second drainage and exhaust valve 26, and the second unloading valve 52, opens the first drainage and exhaust valve 25 and the second water sealing switch valve 36, and the water supply device 80 performs high-pressure water supply, so that the water pressure in the left inner cavity of the valve is greater than the water pressure in the right inner cavity of the valve, and the second water drop counter 32 detects whether there are water drops flowing out of the second leak detection drainage pipe 34. If there are no water drops flowing out of the second leak detection drainage pipe 34, it indicates that after the valve plate is closed, the high-pressure water tightness from the left inner cavity of the valve to the right inner cavity of the valve is good and there is no leakage;

[0123] 5. Finally, open the first unloading valve 51, the second unloading valve 52 and the second drain and exhaust valve 26, empty the water in the valve cavity, pipeline and leak detection drainage tube, and then take out the valve. The automatic control test bench equipment for testing the full performance of the valve completes the measurement of the pressure resistance (low pressure resistance and high pressure resistance), air tightness and water tightness of the valve housing.

[0124] All documents mentioned in the present invention are cited as references in this application, just as each document is cited as reference individually. In addition, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An automatic control test bench for testing the full performance of valves, characterized in that: The equipment includes a torque actuator, a valve clamping device, a leak detection device, an air extraction device, an air supply device and a water supply device, and the leak detection device includes a water-sealed leak detection device and an air-sealed leak detection device; The torque actuator comprises a plate claw (11) for adjusting the opening and closing of the valve; The valve clamping device comprises a first sealing member (21) and a second sealing member (22) connected to the pipeline port of the valve to be tested, the first sealing member and the second sealing member are each provided with a through hole (23), the through hole of the first sealing member and the through hole of the second sealing member are connected via a first pipeline (24), and the first pipeline is provided with a first drain and exhaust valve (25) and a second drain and exhaust valve (26); The water-tight leak detection device comprises a first water drop counter (31) and a second water drop counter (32); the first water drop counter is connected to a first pipeline between a first seal and a first drain and exhaust valve via a first leak detection drainage pipe (33); the second water drop counter is connected to a first pipeline between a second seal and a second drain and exhaust valve via a second leak detection drainage pipe (34); a first water-tight switch valve (35) is provided on the first leak detection drainage pipe, and a second water-tight switch valve (36) is provided on the second leak detection drainage pipe; The airtight leak detection device comprises a first bubble counter (41) and a second bubble counter (42); the first bubble counter is connected to a first pipeline between a first sealing member and a first drain and exhaust valve via a third leak detection drainage pipe (43); the second bubble counter is connected to a first pipeline between a second sealing member and a second drain and exhaust valve via a fourth leak detection drainage pipe (44); a first airtight switch valve (45) is provided on the third leak detection drainage pipe, and a second airtight switch valve (46) is provided on the fourth leak detection drainage pipe; The device further comprises a first unloading valve (51) and a second unloading valve (52), wherein the first unloading valve is connected to the first pipeline between the first sealing member and the first drain and exhaust valve via a second pipeline (53), and the second unloading valve is connected to the first pipeline between the second sealing member and the second drain and exhaust valve via a third pipeline (54); The air extraction device (60), the air supply device (70) and the water supply device (80) are connected to the first pipeline between the first drainage and exhaust valve and the second drainage and exhaust valve through the fourth pipeline (61), the fifth pipeline (71) and the sixth pipeline (81) respectively.

2. The device according to claim 1, characterized in that The fourth pipeline is provided with a first gas valve (62); The fifth pipeline is provided with a second gas valve (72); and / or The sixth pipeline is provided with a liquid valve (82).

3. The device according to claim 1, characterized in that The second pipeline is provided with a first pressure sensor (55); and / or The third pipeline is provided with a second pressure sensor (56).

4. The device according to claim 3, characterized in that The first pressure sensor (55) comprises a gas pressure sensor and / or a liquid pressure sensor; and / or The second pressure sensor (56) comprises a gas pressure sensor and / or a liquid pressure sensor.

5. The device according to claim 1, characterized in that The first water drop counter and the second water drop counter respectively include an infrared transmitter (37) and an infrared receiver (38) for detecting the falling of water drops.

6. The device according to claim 1, characterized in that The first bubble counter and the second bubble counter respectively include a water tank, an infrared transmitter and an infrared receiver, and the infrared transmitter and the infrared receiver are used to detect bubbles entering the water tank from the third leak detection drainage tube and the fourth leak detection drainage tube.

7. The device according to claim 1, characterized in that The torque actuator also includes a torque sensor, a position sensor, a universal joint and a lever, wherein the position sensor is connected below the torque sensor, the position sensor is connected below the universal joint, the universal joint is connected below the lever, and the lever is connected below the claw.

8. The device according to claim 1, characterized in that The device is also provided with a "micro" lens for observing the inner cavity wall of the valve to be tested.

9. The device according to claim 1, characterized in that The device is also provided with an air pressure gauge for detecting the internal air pressure of the valve to be tested and a hydraulic pressure gauge for detecting the internal hydraulic pressure of the valve to be tested.

10. The device according to claim 1, characterized in that The device also includes a control unit for automatically controlling the full performance detection of the valve.

11. The device according to claim 1, characterized in that On the first pipeline, the first drain and air exhaust valve is closer to the first sealing member than the second drain and air exhaust valve.

12. The device according to claim 3, characterized in that The first pressure sensor is arranged between the first unloading valve and the connection point between the second pipeline and the first pipeline; and / or The second pressure sensor is arranged between the second unloading valve and the connection point between the third pipeline and the first pipeline.

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