A valve train leak detection apparatus

Abstract

The present application relates to nuclear power operation technical field, specifically to a kind of valve group leakage detection equipment, including operation platform, sealing mechanism, clamping mechanism, pressure-increasing mechanism, vacuum mechanism, detection mechanism, power source and controller;Sealing mechanism is located in operation platform, sealing mechanism inside forms sealed cavity, clamping mechanism is located in sealed cavity, for clamping the valve group to be detected;Pressure-increasing mechanism is used to promote the medium pressure inside sealed cavity;Vacuum mechanism is used to produce negative pressure inside sealed cavity;Detection mechanism is used to detect and record the tracer medium concentration inside sealed cavity;Power source is respectively connected with clamping mechanism, pressure-increasing mechanism, vacuum mechanism and detection mechanism power;Controller is located in operation platform, and respectively with clamping mechanism, pressure-increasing mechanism, vacuum mechanism and detection mechanism electrically connected.The valve group leakage detection equipment provided by the present application can reduce the operation complexity, effectively improve the detection efficiency, ensure that the sealing property of valve group can be accurately detected under high pressure working condition.

Description

Technical Field

[0001] This invention relates to the field of nuclear power plant operation technology, and more specifically to a valve group leakage detection device. Background Technology

[0002] During nuclear power plant operation, valve assemblies play a crucial role in controlling and switching system pathways. In high-temperature gas-cooled reactor nuclear power plants, the medium pressure can reach as high as 23.2 MPa, and the installation and operation quality of valve assemblies are directly related to nuclear power safety.

[0003] Currently, there are many problems with the testing process for valve assemblies used in nuclear power plants after they are transported to the site. Most of them are single-channel detectors, which, due to their structural limitations, can only perform single-channel testing under low-pressure conditions. This is inefficient, cumbersome, and cannot meet the testing requirements under high-pressure conditions. The accuracy of the test is also low, which can lead to misjudgments. Summary of the Invention

[0004] (I) This invention provides a valve group leakage detection device to alleviate the technical problems of low detection efficiency and inability to meet the detection requirements of high-pressure working conditions in the prior art.

[0005] (II) Technical Solution

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a valve group leakage detection device, comprising an operating table, a sealing mechanism, a clamping mechanism, a pressurizing mechanism, a vacuum mechanism, a detection mechanism, a power source, and a controller;

[0007] The sealing mechanism is located above the operating table, and a sealing cavity is formed inside the sealing mechanism. The clamping mechanism is located in the sealing cavity and is used to clamp the valve group to be tested.

[0008] The pressurization mechanism is connected to the sealing cavity and is used to increase the pressure of the medium inside the sealing cavity;

[0009] The vacuum mechanism is connected to the sealed cavity and is used to generate negative pressure inside the sealed cavity;

[0010] The detection mechanism is located above the sealed cavity and communicates with the sealed cavity, and is used to detect and record the concentration of the tracer medium inside the sealed cavity;

[0011] The power source is connected to the clamping mechanism, the pressurizing mechanism, the vacuum mechanism, and the detection mechanism respectively.

[0012] The controller is located on the operating table and is electrically connected to the clamping mechanism, the pressurizing mechanism, the vacuum mechanism and the detection mechanism respectively.

[0013] Furthermore, the detection mechanism includes a helium leak detector, which is located on one side of the sealed cavity and communicates with the sealed cavity through a first connecting pipe. A suction gun is provided inside the sealed cavity, and the output end of the suction gun is connected to the first connecting pipe.

[0014] Furthermore, the pressurization mechanism includes a pressurization pump, which is located on one side of the operating table, below the helium leak detector. The input end of the pressurization pump is connected to a high-pressure gas cylinder, and the output end of the pressurization pump is connected to the sealing cavity through a second connecting pipe.

[0015] Furthermore, the vacuum mechanism includes a vacuum pump, which is located below the sealed cavity and is connected to the sealed cavity via a third connecting pipe.

[0016] Furthermore, a pressure sensor and a pressure control valve are also provided inside the sealed cavity, and both the pressure sensor and the pressure control valve are electrically connected to the controller.

[0017] Furthermore, a purification fan is also provided at the top of the sealed cavity, and the purification fan is connected to the outside through a fourth connecting pipe.

[0018] Furthermore, the clamping mechanism includes a lifting hydraulic cylinder, a first clamp, a second clamp, and an electric hydraulic pump;

[0019] The lifting hydraulic cylinder is located in the sealed cavity, the first clamp is fixed to the bottom of the lifting hydraulic cylinder, the second clamp is located in the lifting hydraulic cylinder and can move synchronously with the lifting hydraulic cylinder, and the valve assembly is located between the first clamp and the second clamp;

[0020] The electric hydraulic pump is located below the operating platform and is connected to the lifting hydraulic cylinder and the second clamp via hydraulic pipes.

[0021] Furthermore, the sealed cavity is provided with a closed operating hand hole.

[0022] Furthermore, the control panel also includes a manual control panel, indicator lights, and a touch screen display.

[0023] The manual control panel is located above the sealed cavity, the indicator light is located on the top wall of the operating table, and the touch screen is located on the side wall of the operating table.

[0024] The manual control panel, the indicator lights, and the touch screen are all electrically connected to the controller.

[0025] Furthermore, the bottom of the control panel is also equipped with multiple casters.

[0026] The beneficial effects of this invention are:

[0027] This invention provides a valve assembly leakage detection device, comprising an operating table, a sealing mechanism, a clamping mechanism, a pressurizing mechanism, a vacuum mechanism, a detection mechanism, a power source, and a controller. The sealing mechanism is located on the top of the operating table and forms a sealing cavity inside. The clamping mechanism, located inside the sealing cavity, clamps the valve assembly to be tested for leakage detection, achieving physical isolation from the outside environment and ensuring the accuracy of the detection. The power source provides power to the entire detection device. The controller, located inside the operating table, operates the vacuum mechanism to extract the gas from the sealing cavity, generating negative pressure to prevent air from affecting the detection results. Then, the pressurizing mechanism is operated to introduce nitrogen into the sealing cavity, making the background value inside the sealing cavity lower than the atmospheric background value. Finally, the pressurizing mechanism is operated to introduce helium into the sealing cavity for detection. After the clamping mechanism clamps the valve assembly at once, different valve seats and valve cores can be tested simultaneously. The detection mechanism detects and records the concentration of the tracer medium inside the sealing cavity, reducing operational complexity, effectively improving detection efficiency, and ensuring accurate detection of the valve assembly's sealing performance under high-pressure conditions. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a valve group leakage detection device provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram illustrating the operating principle of a valve group leakage detection device provided in an embodiment of the present invention.

[0031] icon:

[0032] 100-Control panel; 101-Sealed cavity; 102-Valve assembly; 103-Helium leak detector; 104-Suction gun; 105-Booster pump; 106-High-pressure gas cylinder; 107-Vacuum pump; 108-Purification fan; 109-Lifting hydraulic cylinder; 110-First clamp; 111-Second clamp; 112-Electric hydraulic pump; 113-Operating handhole; 114-Manual control panel; 115-Indicator light; 116-Touch screen; 117-Wheel casters; 118-Electric distribution box; 119-Water tank; 120-Solenoid valve; 121-Buffer tank; 122-Hatch door. Detailed Implementation

[0033] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0036] like Figures 1 to 2 As shown, this invention provides a valve group leakage detection device, including an operating platform 100, a sealing mechanism, a clamping mechanism, a pressurizing mechanism, a vacuum mechanism, a detection mechanism, a power source, and a controller. The sealing mechanism is located above the operating platform 100, forming a sealing cavity 101 inside. The clamping mechanism is located in the sealing cavity 101 and is used to clamp the valve group 102 to be tested. The pressurizing mechanism is connected to the sealing cavity 101 and is used to increase the pressure of the medium inside the sealing cavity 101. The vacuum mechanism is connected to the sealing cavity 101 and is used to generate negative pressure inside the sealing cavity 101. The detection mechanism is located above the sealing cavity 101 and is connected to the sealing cavity 101 for detecting and recording the concentration of the tracer medium inside the sealing cavity 101. The power source is electrically connected to the clamping mechanism, the pressurizing mechanism, the vacuum mechanism, and the detection mechanism. The controller is located on the operating platform 100 and is electrically connected to the clamping mechanism, the pressurizing mechanism, the vacuum mechanism, and the detection mechanism.

[0037] In this embodiment, the valve group leakage detection device includes an operating platform 100, a sealing mechanism, a clamping mechanism, a pressurizing mechanism, a vacuum mechanism, a detection mechanism, a power source, and a controller. The sealing mechanism is located on the top of the operating platform 100, and a sealing cavity 101 is formed inside the sealing mechanism. The clamping mechanism, located inside the sealing cavity 101, clamps the valve to be tested for leakage detection, which can form physical isolation from the outside world and ensure the accuracy of the detection. The power source provides power to the entire detection device, and the controller located inside the operating platform 100 controls the vacuum mechanism to extract the gas from the sealing cavity 101. A negative pressure is generated to prevent air from affecting the test results. Then, nitrogen gas is introduced into the sealing cavity 101 by controlling the pressurization mechanism, lowering the background value of the environment inside the sealing cavity 101 below the atmospheric background value. Finally, helium gas is introduced into the sealing cavity 101 by controlling the pressurization mechanism for testing. After the valve assembly 102 is clamped by the clamping mechanism, different valve seats and valve cores can be tested simultaneously. The concentration of the tracer medium inside the sealing cavity 101 is detected and recorded by the detection mechanism, reducing operational complexity, effectively improving detection efficiency, and ensuring accurate detection of the sealing performance of the valve assembly 102 under high-pressure conditions. Because the valve assembly leakage detection equipment provided in this embodiment can perform multi-channel synchronous detection, the detection conditions of each channel are more consistent, effectively reducing errors that may occur due to different detection sequences, and improving the accuracy and reliability of the detection results.

[0038] Optionally, the sealing structure is made of high-strength, high-temperature and high-pressure resistant alloy material pressed onto both sides of plexiglass, with sealant applied at the joints. This forms a cubic sealing cavity 101, ensuring more accurate test results for the valve assembly 102 under high pressure. One side of the sealing cavity 101 is openable and equipped with a hatch 122 to facilitate the placement of the valve assembly 102 into the cavity. The power source is a distribution box 118 located at the bottom of the operating table 100, which can provide both high-voltage and low-voltage power to support the entire testing equipment.

[0039] An open button and several gauges are provided on the surface of the control panel 100. Different gauges are used to display different data values ​​inside the sealing cavity 101, so that users can more intuitively view various values ​​inside the sealing cavity 101, such as pressure values.

[0040] Alternatively, the sealing cavity 101 can be connected to the water tank 119 via a pipe, and a solenoid valve 120 can be installed on the connecting pipe. The solenoid valve 120 is electrically connected to the controller, and the controller controls the start and stop of the solenoid valve 120. Before testing, the solenoid valve 120 can be started through the operating table 100. The sealing performance of the sealing cavity 101 can be judged by observing whether bubbles are generated in the water in the water tank 119, so as to prevent waste caused by the introduction of nitrogen and helium and effectively save the cost of use.

[0041] According to one embodiment provided by the present invention, such as Figure 1 The detection mechanism includes a helium leak detector 103, which is located on one side of the sealed cavity 101 and is connected to the sealed cavity 101 through a first connecting pipe. A suction gun 104 is provided inside the sealed cavity 101, and the output end of the suction gun 104 is connected to the first connecting pipe.

[0042] In this embodiment, the helium leak detector 103 is installed on the side of the sealing mechanism and is directly connected to the sealing cavity 101 through the first connecting pipe. Correspondingly, a suction gun 104 is installed inside the sealing cavity 101. The output end of the suction gun 104 is directly connected to the end of the first connecting pipe inside the sealing cavity 101. During detection, the operator controls the suction gun 104 to be aimed at different detection points. By observing the measurement results of the helium leak detector 103 and comparing them with the helium concentration in the sealing cavity 101, it can be confirmed whether there is a leak. The whole operation process is very simple. Furthermore, the valve group 102 performs multi-channel detection simultaneously, and the detection conditions of each channel are highly consistent, which can effectively reduce the errors that may be caused by different detection sequences and improve the accuracy and reliability of the detection results.

[0043] According to one embodiment provided by the present invention, such as Figure 1 The pressurization mechanism includes a pressurization pump 105, which is located on one side of the operating table 100, below the helium leak detector 103. The input end of the pressurization pump 105 is connected to a high-pressure gas cylinder 106, and the output end of the pressurization pump 105 is connected to the sealing cavity 101 through a second connecting pipe.

[0044] In this embodiment, a booster pump 105 is placed on one side of the operating table 100. The booster pump 105 ensures the supply of medium gas during the inspection process and increases the pressure in the sealed cavity 101. The input end of the booster pump 105 is connected to a high-pressure gas cylinder 106. There are two types of high-pressure gas cylinders 106, one for storing helium and the other for storing nitrogen. They are connected to the input end of the booster pump 105 using different inlet pipes. Each inlet pipe is equipped with a shut-off valve, which is electrically connected to the controller and can be directly adjusted by the buttons on the booster pump 105. At the same time, the output end of the booster pump 105 is connected to the sealed cavity 101 through a second connecting pipe. There are two second connecting pipes, one for helium and the other for nitrogen. Each second connecting pipe is equipped with a solenoid valve 120, which is electrically connected to the controller and can also be directly adjusted by the buttons on the booster pump 105.

[0045] Preferably, the high-pressure gas cylinder 106 is also equipped with a manual valve and a pressure regulating valve to facilitate the adjustment of the high-pressure gas cylinder 106 at any time.

[0046] A first equipment compartment is fixed on one side of the control panel 100. It is designed as two independent spaces for placing a helium leak detector 103 and a booster pump 105. The helium leak detector 103 and the booster pump 105 are arranged side by side to facilitate the maintenance of leaking equipment.

[0047] According to one embodiment provided by the present invention, such as Figure 1 The vacuum mechanism includes a vacuum pump 107, which is located below the sealed cavity 101 and is connected to the sealed cavity 101 via a third connecting pipe.

[0048] In this embodiment, a vacuum pump 107 is placed on the operating table 100 below the sealed cavity 101. The vacuum pump 107 is connected to the sealed cavity 101 through a third connecting pipe, and a solenoid valve 120 is provided on the vacuum pump 107. The start and stop of the vacuum pump 107 and the solenoid valve 120 can be controlled by the controller to ensure that the air in the sealed cavity 101 can be discharged to generate negative pressure.

[0049] The vacuum pump 107 is directly connected to the outside. Optionally, a buffer tank 121 is provided between the vacuum pump 107 and the outside to collect the gas drawn by the vacuum pump 107.

[0050] Preferably, a second equipment compartment is provided below the operating table 100, which is designed as several independent spaces for placing the vacuum pump 107, the electric hydraulic pump 112 and the power distribution box 118, thereby facilitating the maintenance of leaking equipment.

[0051] In this embodiment, a pressure sensor and a pressure control valve are also installed inside the sealed cavity 101, thereby establishing a complete pressure detection and safety protection mode. A high-precision pressure sensor is used to detect the pressure in real time, and the pressure control valve ensures pressure stability. When the pressure sensor detects that the pressure inside the sealed cavity 101 exceeds 95% of the set upper limit, the controller issues an alarm and controls the pressure control valve to open and regulate the pressure. When the pressure sensor detects that the pressure inside the sealed cavity 101 exceeds 105% of the set upper limit, the pressure control valve automatically opens to release excess pressure and prevent accidents. It can stably provide a pressure of up to 26.8 MPa, meeting the detection requirements of the valve group 102 in the high-temperature gas-cooled reactor nuclear power plant.

[0052] Optionally, multiple pressure relief pipes can be installed in the sealed cavity 101 to directly connect with the outside. Each pressure relief pipe is equipped with a pressure control valve. The pressure sensor and each pressure control valve are electrically connected to the controller to ensure the stability of the pressure in the sealed cavity 101 in real time.

[0053] According to one embodiment provided by the present invention, such as Figure 1The top of the sealed cavity 101 is also provided with a purification fan 108, which is connected to the outside through a fourth connecting pipe.

[0054] In this embodiment, the intelligent control calculation system is pre-input into the controller, and the system parameters are dynamically adjusted according to the values ​​measured by the helium leak detector 103. When an upward trend in helium concentration is detected, the controller will automatically increase the speed of the purification fan 108 and adjust the gas supply flow of the pressurization mechanism to maintain the stability of the environmental background value, thereby improving the reliability and stability of detection, reducing manual intervention, and lowering the risk of operational errors.

[0055] The gas discharged by the purifying fan 108 is directly discharged outdoors through the fourth connecting pipe, and can be uniformly recycled without causing pollution to the environment.

[0056] According to one embodiment provided by the present invention, such as Figure 1 The clamping mechanism includes a lifting hydraulic cylinder 109, a first clamp 110, a second clamp 111, and an electric hydraulic pump 112. The lifting hydraulic cylinder 109 is located in the sealed cavity 101, the first clamp 110 is fixed to the bottom of the lifting hydraulic cylinder 109, and the second clamp 111 is located on the lifting hydraulic cylinder 109 and can move synchronously with the lifting hydraulic cylinder 109. A valve group 102 is located between the first clamp 110 and the second clamp 111. The electric hydraulic pump 112 is located below the operating platform 100 and is connected to the lifting hydraulic cylinder 109 and the second clamp 111 through hydraulic pipes.

[0057] In this embodiment, the lifting hydraulic cylinder 109 is disposed in the sealed cavity 101, and a support plate is disposed below the lifting hydraulic cylinder 109. The first clamp 110 is fixed on the support plate, and the second clamp 111 is fixed on the lifting hydraulic cylinder 109. The lifting hydraulic cylinder 109 is controlled by the electric hydraulic pump 112 disposed below the operating table 100, which drives the first clamp 110 and the second clamp 111 to clamp the valve group 102 to be tested. At the same time, the clamping force between the first clamp 110 and the second clamp can be adjusted by the controller through the electric hydraulic pump 112. Different clamping forces can be set according to the different specifications of valves to be tested, which can improve the applicability of the testing equipment.

[0058] According to one embodiment provided by the present invention, such as Figure 1 The sealed cavity 101 is provided with a closed operating hand hole 113.

[0059] In this embodiment, the sealed cavity 101 has a closed operating hand hole 113, and a rubber glove is installed inside the operating hand hole so that the user can smoothly operate after putting his hand in, and maintain the sensitivity of the operation.

[0060] According to one embodiment provided by the present invention, such asFigure 1 The control panel 100 also includes a manual control panel 114, an indicator light 115, and a touch screen 116. The manual control panel 114 is located above the sealed cavity 101, the indicator light 115 is located on the top wall of the control panel 100, and the touch screen 116 is located on the side wall of the control panel 100. The manual control panel 114, the indicator light 115, and the touch screen 116 are electrically connected to the controller.

[0061] In this embodiment, the manual control panel 114 located above the sealed cavity 101 allows for easy and intuitive control of the start and stop of the entire testing equipment. Meanwhile, the indicator lights 115 located on the top of the operating table 100 allow the operator to clearly judge the situation inside the sealed cavity 101. Preferably, the indicator lights 115 are set to three colors to more intuitively display different situations through different colors. At the same time, a touch screen display 116 is connected to the side wall of the operating table 100, which makes the operation of the testing equipment simpler.

[0062] According to one embodiment provided by the present invention, such as Figure 1 The bottom of the control panel 100 is also equipped with multiple casters 117.

[0063] In this embodiment, in order to easily prepare the valve group leakage detection device provided in this embodiment, a plurality of casters 117 are installed at the bottom of the operating table 100, and a self-braking component is provided above the casters 117 to prevent the casters 117 from rotating during use.

[0064] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A valve assembly leakage detection device, characterized in that, It includes an operating table (100), a sealing mechanism, a clamping mechanism, a pressurizing mechanism, a vacuum mechanism, a detection mechanism, a power source, and a controller; The sealing mechanism is located above the operating table (100), and a sealing cavity (101) is formed inside the sealing mechanism. The clamping mechanism is located in the sealing cavity (101) and is used to clamp the valve group (102) to be tested. The pressurization mechanism is connected to the sealing cavity (101) and is used to increase the pressure of the medium inside the sealing cavity (101); The vacuum mechanism is connected to the sealed cavity (101) and is used to generate negative pressure inside the sealed cavity (101); The detection mechanism is located above the sealed cavity (101) and communicates with the sealed cavity (101), and is used to detect and record the concentration of the tracer medium inside the sealed cavity (101); The power source is connected to the clamping mechanism, the pressurizing mechanism, the vacuum mechanism, and the detection mechanism respectively. The controller is located on the operating table (100) and is electrically connected to the clamping mechanism, the pressurizing mechanism, the vacuum mechanism and the detection mechanism respectively; The detection mechanism includes a helium leak detector (103), which is located on one side of the sealed cavity (101) and is connected to the sealed cavity (101) through a first connecting pipe. A suction gun (104) is provided inside the sealed cavity (101), and the output end of the suction gun (104) is connected to the first connecting pipe. The pressurization mechanism includes a pressurization pump (105), which is located on one side of the operating table (100) and below the helium leak detector (103). The input end of the pressurization pump (105) is connected to a high-pressure gas cylinder (106), and the output end of the pressurization pump (105) is connected to the sealing cavity (101) through a second connecting pipe. The vacuum mechanism includes a vacuum pump (107), which is located below the sealed cavity (101) and is connected to the sealed cavity (101) through a third connecting pipe.

2. The valve assembly leakage detection device according to claim 1, characterized in that, The sealed cavity (101) is also equipped with a pressure sensor and a pressure control valve, both of which are electrically connected to the controller.

3. The valve assembly leakage detection device according to claim 2, characterized in that, The top of the sealed cavity (101) is also provided with a purification fan (108), which is connected to the outside through a fourth connecting pipe.

4. The valve assembly leakage detection device according to claim 1, characterized in that, The clamping mechanism includes a lifting hydraulic cylinder (109), a first clamp (110), a second clamp (111), and an electric hydraulic pump (112). The lifting hydraulic cylinder (109) is located in the sealed cavity (101), the first clamp (110) is fixed to the bottom of the lifting hydraulic cylinder (109), and the second clamp (111) is located in the lifting hydraulic cylinder (109) and can move synchronously with the lifting hydraulic cylinder (109). The valve group (102) is located between the first clamp (110) and the second clamp (111). The electric hydraulic pump (112) is located below the operating table (100) and is connected to the lifting hydraulic cylinder (109) and the second clamp (111) respectively through hydraulic pipes.

5. The valve assembly leakage detection device according to claim 1, characterized in that, The sealed cavity (101) is provided with a closed operating hand hole (113).

6. The valve assembly leakage detection device according to claim 1, characterized in that, The control panel (100) also includes a manual control panel (114), indicator lights (115), and a touch screen (116). The manual control panel (114) is located above the sealed cavity (101), the indicator light (115) is located on the top wall of the operating table (100), and the touch screen (116) is located on the side wall of the operating table (100). The manual control panel (114), the indicator light (115), and the touch screen (116) are electrically connected to the controller.

7. The valve assembly leakage detection device according to claim 1, characterized in that, The bottom of the control panel (100) is also equipped with multiple casters (117).

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