Gas-insulated switchgear sealing device with self-checking function

Abstract

The invention relates to an inflatable cabinet sealing device with a self-checking function, and relates to the technical field of electrical equipment sealing, the inflatable cabinet sealing device comprises an inflatable cabinet structure, the inflatable cabinet structure comprises a sealing unit, a prestress unit is arranged in the sealing unit, and a self-checking unit is arranged on the surface of the sealing unit. Through cooperation of the prestress unit and the sealing unit, continuous and uniform pre-tightening force is provided for the sealing cover through the elastic force of a spring and a mechanical clamping structure, the sealing performance of the gas-insulated switchgear is remarkably improved, the influence of environmental factors on the sealing performance is effectively resisted, the self-checking unit achieves automatic gas collection through a double-motor driving mechanism, and the sealing performance of the gas-insulated switchgear is improved. By combining the chromogenic reaction of the colorless phenolphthalein solution, the leakage can be visually detected without manual intervention, the detection efficiency and accuracy are improved, the overall structure gives consideration to the sealing reliability and the operation convenience, the maintenance cost is reduced, a guarantee is provided for long-term stability of the sealing performance of the gas-insulated switchgear, and the gas-insulated switchgear has remarkable practical value and technical advantages.

Description

Technical Field

[0001] The present application relates to the sealing of electric power equipment, and in particular to an inflatable cabinet sealing device with a self-test function. Background Art

[0002] At present, the gas filling cabinet is a core device for achieving insulation and protection of high-voltage electrical equipment in the power system. Its sealing performance directly affects the reliability and service life of the equipment. The traditional gas filling cabinet sealing device mainly achieves sealing by squeezing the sealing ring or tightening the bolts. However, it is easily affected by factors such as temperature changes and mechanical vibrations during long-term operation, resulting in the elasticity of the sealing ring attenuation or the relaxation of the bolt pre-tightening force, which in turn causes gas leakage problems. In terms of sealing detection, existing technologies mostly rely on manual regular disassembly and inspection or external complex sensing equipment, which has defects such as low detection efficiency, high risk of missed detection, and frequent disassembly that easily damages the sealing structure. In addition, the opening and closing operation of the traditional sealing cover requires the use of tools to disassemble and assemble the bolts, which is cumbersome and time-consuming, and it is difficult to meet the needs of rapid equipment maintenance in industrial scenarios.

[0003] In response to the above-mentioned related technologies, the present invention provides an inflatable cabinet sealing device with a self-inspection function. A prestressed structure is integrated in the sealing unit to achieve a continuous and stable sealing pre-tightening force, and an automated self-inspection unit is designed to solve the inefficiency problem of traditional detection methods. At the same time, the opening and closing mechanism of the sealing cover is optimized to improve the convenience of maintenance, thereby effectively overcoming the defects of the existing technology such as insufficient sealing, inconvenient detection and cumbersome operation. Summary of the Invention

[0004] The purpose of this application is to provide an inflatable cabinet sealing device with a self-checking function.

[0005] The present application provides an inflatable cabinet sealing device with a self-test function, which adopts the following technical solution: comprising an inflatable cabinet structure, wherein the inflatable cabinet structure comprises a sealing unit, wherein a prestressed unit is provided inside the sealing unit, and a self-test unit is provided on the surface of the sealing unit; The prestressed unit is used to provide prestress to the sealing unit of the device to increase its sealing performance. The prestressed unit includes a spring 1, a connecting block is fixedly connected to the surface of the spring 1, a limiting rod is fixedly connected to the surface of the connecting block at one end away from the spring 1, a clamping block is fixedly connected to the surface of the extrusion plate, the inner wall of the extrusion plate is fixedly connected to a rotating seat, the inner wall of the rotating seat is rotatably connected to a rotating block, the end of the rotating block away from the rotating seat is rotatably connected to a sliding block, the inner wall of the sliding block is slidably connected to a slide rail 1, and the surface of the sliding block is fixedly connected to a spring 2.

[0006] The sealing unit includes a shell, a sealing cover is hingedly connected to the surface of the shell, an extrusion block is fixedly connected to the inner surface of the sealing cover, the inner wall of the shell is fixedly connected to a support frame, a sealing ring is fixedly connected to the surface of the support frame, and a card slot is opened on the inner wall of the sealing cover.

[0007] One end of the spring 1 away from the connecting block is fixedly connected to the shell, both ends of the slide rail 1 are fixedly connected to the shell, and the surface of the extrusion plate is slidably connected to the shell.

[0008] The self-inspection unit is used to check the sealing of the inflatable cabinet. The self-inspection unit includes a first motor, a mounting plate is fixedly connected to the surface of the first motor, a lead screw is fixedly connected to the output end of the first motor, a sliding frame is threadedly connected to the surface of the lead screw, a mounting frame is fixedly connected to the inner wall of the sliding frame, a second motor is fixedly connected to the surface of the mounting frame, the output end of the second motor is fixedly connected to a rotating rod, a fan blade is fixedly connected to the surface of the rotating rod, a color test tank is threadedly connected to the inner wall of the sliding frame, an observation window is provided on the surface of the color test tank, and a slide rail 2 is slidably connected to the surface of the sliding frame.

[0009] The surface of the second slide rail is fixedly connected to the outer shell, and the surface of the mounting plate is fixedly connected to the outer shell.

[0010] Two mounting plates are provided, and the two mounting plates are linearly arranged and distributed along the surface of the shell, and the two ends of the lead screw are rotatably connected to the inner walls of the mounting plates.

[0011] The output end of the first motor passes through the mounting plate and is fixedly connected to the lead screw, and the output end of the second motor passes through the mounting frame and is fixedly connected to the rotating rod.

[0012] The interior of the color testing tank is provided with a colorless phenolphthalein solution for detecting whether there is gas leakage.

[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. The present invention significantly enhances the sealing performance of the inflatable cabinet through the cooperation of the prestressed unit and the sealing unit. In the prior art, the sealing structure of the inflatable cabinet usually relies on a single sealing ring or bolt fastening. After long-term use, it is easy for the seal to age or the pressure to decay due to factors such as vibration and temperature change, thereby causing the risk of air leakage. The present invention arranges a prestressed unit inside the sealing unit, and uses the elastic force of the spring 1 to push the extrusion plate to continuously apply lateral prestress to the sealing cover, so that the clamping block tightly engages the clamping groove on the inner wall of the sealing cover. At the same time, the extrusion block on the inner side of the sealing cover presses the sealing ring against the surface of the support frame. This "mechanical clamping + elastic extrusion" double sealing structure ensures that the prestress acts evenly on the sealing interface through the guide limit of the slide rail 1 and the sliding block, effectively offsetting the influence of the external environment on the sealing pressure. Compared with the traditional structure, it can maintain a stable sealing effect for a long time, and fundamentally reduce the risk of gas leakage. 2. The self-test unit of the present invention realizes the automatic detection of the sealing of the inflatable cabinet, which improves the convenience and reliability of equipment maintenance. The sealing detection of the existing inflatable cabinet mostly relies on manual periodic disassembly and inspection or external complex detection instruments, which has the problems of low detection efficiency and high risk of missed detection. The present invention innovatively sets a self-test unit, which drives the guide screw by the first motor to drive the sliding frame to reciprocate along the second slide rail, and the second motor drives the fan blades to actively collect the gas in the cabinet. When ammonia is injected into the cabinet as a detection medium, if a leak occurs, the ammonia-containing gas enters the color test tank and contacts the colorless phenolphthalein solution to turn red. The leak location can be intuitively judged through the observation window. The detection process does not require manual intervention and can be integrated into the equipment control system to realize periodic automatic detection. Compared with the traditional manual detection method, the timeliness and accuracy of leakage detection are significantly improved, while avoiding damage to the sealing structure caused by frequent disassembly, thereby reducing maintenance costs; 3. The prestressed unit design of the present invention takes into account both sealing reliability and operational convenience, and optimizes the user experience of the equipment. The sealing cover of a traditional inflatable cabinet is usually fastened with bolts or snap connections, which has the problems of being laborious to open and inconvenient to adjust the sealing pressure. The prestressed unit of the present invention uses the elastic cooperation of spring one and spring two. Under normal working conditions, spring one provides continuous sealing pressure to ensure that the sealing cover is tightly closed; when maintenance is required, it is only necessary to press the extrusion plate, and the sliding block compresses spring two along the slide rail one to disengage the card block from the sealing cover slot, and the sealing cover can be easily opened. This "automatic pretightening-manual release" mechanical structure not only ensures the stability of the sealing process, but also avoids the tedious steps of traditional bolt connections that require tool operation, allowing maintenance personnel to complete the opening and closing operations of the sealing cover with one hand, greatly improving the convenience of daily maintenance of the equipment, and is especially suitable for industrial environments that require frequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the internal structure of the present invention; Figure 3 It is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the partial structure of the present invention; Figure 5 This is a schematic diagram of the partial structure of the present invention; Figure 6 It is a schematic diagram of the internal structure of the overall structure of the present invention.

[0015] Explanation of the accompanying drawings: 1. Inflatable cabinet structure; 10. Sealing unit; 1001. Shell; 1002. Sealing cover; 1003. Extrusion block; 1004. Sealing ring; 1005. Support frame; 20. Prestressed unit; 2001. Spring 1; 2002. Limit rod; 2003. Connecting block; 2004. Extrusion plate; 2005. Block; 2006. Rotating seat; 2007. Rotating block; 2008. Sliding block; 2009. Slide rail 1; 2010. Spring 2; 30. Self-test unit; 3001. First motor; 3002. Mounting plate; 3003. Lead screw; 3004. Sliding frame; 3005. Mounting frame; 3006. Second motor; 3007. Rotating rod; 3008. Fan blade; 3009. Color test tank; 3010. Observation window; 3011. Slide rail 2. DETAILED DESCRIPTION

[0016] The following is a further detailed description of this application in combination with 1-6.

[0017] Example 1: An inflatable cabinet sealing device with self-checking function, referring to Figure 1 , including an inflatable cabinet structure 1, the inflatable cabinet structure 1 includes a sealing unit 10, a prestressed unit 20 is provided inside the sealing unit 10, and a self-test unit 30 is provided on the surface of the sealing unit 10; The prestressed unit 20 is used to provide prestress to the sealing unit 10 of the device to increase its sealing performance. The prestressed unit 20 includes a spring 2001. The surface of the spring 2001 is fixedly connected to a connecting block 2003. The surface of the connecting block 2003 is fixedly connected to a limiting rod 2002. The surface of the connecting block 2003 at one end away from the spring 2001 is fixedly connected to an extrusion plate 2004. The surface of the extrusion plate 2004 is fixedly connected to a clamping block 2005. The inner wall of the extrusion plate 2004 is fixedly connected to a rotating seat 2006. The inner wall of the rotating seat 2006 is rotatably connected to a rotating block 2007. The end of the rotating block 2007 away from the rotating seat 2006 is rotatably connected to a sliding block 2008. The inner wall of the sliding block 2008 is slidably connected to a slide rail 2009. The surface of the sliding block 2008 is fixedly connected to a spring 2010.

[0018] The prestressed unit 20 is used to provide prestress to the sealing unit 10 of the device to increase its sealing performance. Its specific structure and function are as follows: the surface of the spring 2001 is fixedly connected to the connecting block 2003, and the end of the spring 2001 away from the connecting block 2003 is fixedly connected to the shell 1001, and the elastic deformation of the spring 2001 can provide a continuous thrust for the connecting block 2003; the surface of the connecting block 2003 is fixedly connected to the limiting rod 2002, and the limiting rod 2002 can limit the movement direction of the connecting block 2003 to ensure that it moves along a predetermined trajectory; the surface of the connecting block 2003 away from the spring 2001 is fixedly connected to the extrusion plate 2004, and the connecting block 2003 will elastically The thrust of spring 1001 is transmitted to the extrusion plate 2004, so that the extrusion plate 2004 can apply pressure in the direction of the sealing cover 1002; the surface of the extrusion plate 2004 is fixedly connected to the card block 2005, and the card block 2005 cooperates with the card groove provided on the inner wall of the sealing cover 1002. When the extrusion plate 2004 is acted upon by the thrust of spring 1001, the card block 2005 can be stuck into the card groove of the sealing cover 1002, thereby tightly fixing the sealing cover 1002 on the housing 1001, thereby pre-tightening the sealing unit 10; the inner wall of the extrusion plate 2004 is fixedly connected to the rotating seat 2006, and the inner wall of the rotating seat 2006 is rotatably connected to the rotating block 2007, and the rotating block 2007 is away from the rotating seat 200 One end of 6 is rotatably connected to the sliding block 2008, and the inner wall of the sliding block 2008 is slidably connected to the slide rail 1 2009. The two ends of the slide rail 1 2003 are fixedly connected to the shell 1001. This structure forms a rotation guide mechanism. The rotation connection between the rotating seat 2006 and the rotating block 2007 and the sliding cooperation of the sliding block 2008 on the slide rail 1 2009 enable the extrusion plate 2004 to make a horizontal linear motion along the direction of the slide rail 1 2009 when the spring 1 2001 pushes it, avoiding offset or jamming and ensuring stable transmission of the preload force; the surface of the sliding block 2008 is fixedly connected to the spring 2010, and the spring 2010 can be subjected to reverse pressure when the extrusion plate 2004 is pressed. When opening the sealing cover 1002, the extrusion plate 2004 is pressed to provide buffering and reset force. When the sealing cover 1002 needs to be opened, the extrusion plate 2004 is pressed, and the sliding block 2008 slides along the slide rail 1 2009 and compresses the spring 2 2010, so that the card block 2005 is disengaged from the card slot of the sealing cover 1002, thereby realizing the convenient opening of the sealing cover 1002. After releasing the pressure, the elastic force of the spring 2 2010 can assist the extrusion plate 2004 to reset, ensuring that the prestressed unit 20 can work repeatedly and stably. Through the coordinated action of the above-mentioned components, the prestressed unit 20 provides continuous and uniform prestressed force for the sealing unit 10, effectively enhancing the sealing and reliability of the inflatable cabinet sealing device.

[0019] The sealing unit 10 includes a shell 1001, a sealing cover 1002 is hingedly connected to the surface of the shell 1001, an extrusion block 1003 is fixedly connected to the inner surface of the sealing cover 1002, a support frame 1005 is fixedly connected to the inner wall of the shell 1001, a sealing ring 1004 is fixedly connected to the surface of the support frame 1005, and a card slot is opened on the inner wall of the sealing cover 1002.

[0020] The sealing unit 10 serves as the basic structure of the inflatable cabinet sealing device, and its various components work together to achieve the sealing function: the outer shell 1001 serves as the main frame, and a sealing cover 1002 is provided on the surface through a hinge connection, so that the sealing cover 1002 can rotate around the hinge to realize the opening and closing of the inflatable cabinet; the inner surface of the sealing cover 1002 is fixedly connected to the extrusion block 1003, and when the sealing cover 1002 is closed, the extrusion block 1003 rotates with the sealing cover 1002 and moves into the outer shell 1001; the inner wall of the outer shell 1001 is fixedly connected to the support frame 1005, and the surface of the support frame 1005 is fixedly connected to the sealing ring 1004, and the sealing ring 1004 is provided with a stable installation foundation by the support frame 1005 and is positioned at the sealing interface of the inner wall of the outer shell 1001; when the sealing cover 1002 is fully closed, the extrusion block 1003 on the inner side of the sealing cover 1002 will directly squeeze The sealing ring 1004 causes the sealing ring 1004 to produce elastic deformation and fit tightly to the surface of the support frame 1005, thereby forming a first sealing barrier between the outer shell 1001 and the sealing cover 1002; at the same time, a card groove is opened on the inner wall of the sealing cover 1002, and the card groove cooperates with the card block 2005 in the prestressed unit 20. When the extrusion plate 2004 of the prestressed unit 20 is pushed by the spring 2001, the card block 2005 will be stuck in the card groove on the inner wall of the sealing cover 1002. The sealing cover 1002 is tightly fixed on the outer shell 1001 through the mechanical engagement of the card block 2005 and the card groove, so that the extrusion force of the extrusion block 1003 on the sealing ring 1004 remains stable, and then through the dual effects of mechanical engagement and elastic extrusion, it is ensured that the sealing unit 10 has reliable sealing performance when the inflatable cabinet is closed, effectively preventing internal gas leakage.

[0021] One end of the spring 1 2001 away from the connecting block 2003 is fixedly connected to the housing 1001 , both ends of the slide rail 1 2009 are fixedly connected to the housing 1001 , and the surface of the extrusion plate 2004 is slidably connected to the housing 1001 .

[0022] The end of the spring 1 2001 away from the connecting block 2003 is fixedly connected to the housing 1001, providing a stable force base point for the spring 1 2001, so that it can generate a continuous thrust on the connecting block 2003 through its own elastic deformation, and the thrust is transmitted to the extrusion plate 2004 fixedly connected thereto via the connecting block 2003, thereby pushing the extrusion plate 2004 to move toward the sealing cover 1002; the two ends of the slide rail 1 2009 are fixedly connected to the housing 1001, and a horizontal guide track is constructed inside the housing 1001, and the extrusion plate 2004 is connected to the housing 1001 through the rotating seat 2006 on the inner wall, the rotating block 2007 and the rotating connection structure of the sliding block 2008, so that the inner wall of the sliding block 2008 slides with the slide rail 1 2009, thereby limiting the movement trajectory of the extrusion plate 2004 to the sliding In the extension direction of the rail 2009, it is ensured that the extrusion plate 2004 can only slide linearly along the lateral direction of the shell 1001; the surface of the extrusion plate 2004 is slidably connected to the shell 1001, and the movement of the extrusion plate 2004 is further limited and supported by the inner wall of the shell 1001 to avoid it from tilting or getting stuck during movement, ensuring that the block 2005 can be accurately aligned and stuck in the slot on the inner wall of the sealing cover 1002, so that the prestress of the spring 2001 can stably act on the sealing cover 1002 through the extrusion plate 2004, which not only realizes the pre-tightening of the sealing unit 10 to enhance the sealing performance, but also ensures the smoothness and reliability of the movement of the extrusion plate 2004 through the cooperation of the slide rail 2009 and the shell 1001, providing structural support for the stable operation of the prestressed unit 20.

[0023] Embodiment 2: A gas cabinet sealing device with a self-inspection function, wherein the self-inspection unit 30 is used to inspect the sealing of the gas cabinet, and the self-inspection unit 30 includes a first motor 3001, a mounting plate 3002 is fixedly connected to the surface of the first motor 3001, a lead screw 3003 is fixedly connected to the output end of the first motor 3001, a sliding frame 3004 is threadedly connected to the surface of the lead screw 3003, a mounting frame 3005 is fixedly connected to the inner wall of the sliding frame 3004, a second motor 3006 is fixedly connected to the surface of the mounting frame 3005, a rotating rod 3007 is fixedly connected to the output end of the second motor 3006, a fan blade 3008 is fixedly connected to the surface of the rotating rod 3007, a color test tank 3009 is threadedly connected to the inner wall of the sliding frame 3004, an observation window 3010 is provided on the surface of the color test tank 3009, and a slide rail 2 3011 is slidably connected to the surface of the sliding frame 3004.

[0024] The self-test unit 30 is used to realize the automatic detection of the sealing of the inflatable cabinet. Its various components achieve the detection function through mechanical connection and coordinated operation: the surface of the first motor 3001 is fixedly connected to the mounting plate 3002, and there are two mounting plates 3002 arranged linearly along the surface of the shell 1001. Its surface is fixedly connected to the shell 1001, providing a stable installation base for the first motor 3001; the output end of the first motor 3001 passes through the mounting plate 3002 and is fixedly connected to the screw 3003. When the first motor 3001 is started, it can The lead screw 3003 is driven to rotate around an axis that is rotatably connected to the inner wall of the mounting plate 3002 at both ends; the sliding frame 3004 is threadedly connected to the surface of the lead screw 3003, and its inner wall is slidably connected to the second slide rail 3011, and the surface of the second slide rail 3011 is fixedly connected to the housing 1001, so that the sliding frame 3004 is driven by the lead screw 3003 to make reciprocating linear motion along the second slide rail 3011, thereby achieving detection coverage of different positions inside the inflatable cabinet; the inner wall of the sliding frame 3004 is fixedly connected to the mounting frame 3005, and the surface of the mounting frame 3005 is fixedly connected The second motor 3006 has an output end that passes through the mounting bracket 3005 and is fixedly connected to the rotating rod 3007. After the second motor 3006 is started, it can drive the rotating rod 3007 and the fan blade 3008 fixedly connected to the surface to rotate at high speed. The rotation of the fan blade 3008 forms an air flow in the inflatable cabinet, actively absorbing the gas that may leak; the inner wall of the sliding bracket 3004 is threadedly connected to the color test tank 3009, and the color test tank 3009 is provided with a colorless phenolphthalein solution. The observation window 3010 on the surface is used to visually view the color change of the solution. When the color of the inflatable cabinet is When ammonia is injected as the detection medium and leakage occurs, the ammonia-containing gas is driven by the fan blades 3008 into the color test tank 3009, and the colorless phenolphthalein solution turns red after contact with it. It can be determined whether there is a leakage through the observation window 3010; the entire self-test unit 30 realizes the automatic collection, transmission and detection of the gas inside the inflation cabinet through the coordinated work of the first motor 3001 and the second motor 3006. Combined with the chemical color development reaction of the color test tank 3009, the sealing inspection can be completed without human intervention, thereby improving the convenience and reliability of the detection.

[0025] The surface of the second slide rail 3011 is fixedly connected to the housing 1001 , and the surface of the mounting plate 3002 is fixedly connected to the housing 1001 .

[0026] The surface of the second slide rail 3011 is fixedly connected to the housing 1001. A stable transverse guide track is constructed inside the housing 1001. Its function is to provide precise motion guidance for the sliding frame 3004, so that the sliding frame 3004 can maintain a straight motion trajectory when sliding along the surface of the second slide rail 3011 to avoid deviation or shaking, thereby ensuring that the self-test unit 30 can cover different positions to achieve comprehensive testing when performing a sealing test on the inside of the inflatable cabinet; the surface of the mounting plate 3002 is fixedly connected to the housing 1001. As the installation carrier of the first motor 3001, it provides a stable support base for the first motor 3001 by being fixed on the housing 1001, ensuring that the first motor 3001 remains stable when driving the screw 3003 to rotate, avoiding the rotation accuracy of the screw 3003 affected by motor vibration or displacement, and thus ensuring that the sliding frame 3004 can move back and forth smoothly along the slide rail 2 3011 under the drive of the screw 3003, so that the various components of the self-test unit 30 coordinate and cooperate during the detection process to achieve effective detection of the sealing of the inflatable cabinet.

[0027] Two mounting plates 3002 are provided, and the two mounting plates 3002 are linearly arranged along the surface of the housing 1001 . Both ends of the lead screw 3003 are rotatably connected to the inner wall of the mounting plate 3002 .

[0028] Two mounting plates 3002 are provided and are linearly arranged along the surface of the housing 1001, and their surfaces are fixedly connected to the housing 1001, providing support base points at both ends for the screw 3003. The two mounting plates 3002 ensure that the screw 3003 is coaxially installed along a specific direction of the housing 1001, usually horizontally or vertically, through linear arrangement, to avoid bending or eccentricity of the screw 3003 when rotating due to single-point support; both ends of the screw 3003 are rotatably connected to the inner wall of the mounting plate 3002, so that the screw 3003 can rotate stably in the support structure formed by the mounting plate 3002, when the output end of the first motor 3001 passes through the mounting plate 3002 and is fixedly connected to the screw 3003 and drives it to rotate During the rotation, the lead screw 3003 converts the rotational motion into the linear motion of the slide frame 3004 along the second slide rail 3011 through the cooperation of the surface thread and the slide frame 3004, and the symmetrical support of the two mounting plates 3002 ensures the stability and coaxiality of the lead screw 3003 during rotation, thereby ensuring that the slide frame 3004 can make precise reciprocating linear motion along the second slide rail 3011 under the drive of the lead screw 3003, so that the fan blades 3008 and the color test tank 3009 of the self-test unit 30 can cover different positions inside the inflatable cabinet, realizing a comprehensive test of the sealing. This structure effectively improves the stability of the motion mechanism of the self-test unit 30 and the reliability of the detection process through the linear arrangement of the double mounting plates and the support at both ends of the lead screw.

[0029] The output end of the first motor 3001 passes through the mounting plate 3002 and is fixedly connected to the lead screw 3003 , and the output end of the second motor 3006 passes through the mounting bracket 3005 and is fixedly connected to the rotating rod 3007 .

[0030] The output end of the first motor 3001 passes through the mounting plate 3002 and is fixedly connected to the lead screw 3003, wherein the surface of the mounting plate 3002 is fixedly connected to the housing 1001 and provides mounting support for the first motor 3001. This connection method enables the rotational power of the first motor 3001 to be directly transmitted to the lead screw 3003, driving the lead screw 3003 to rotate stably around the axis whose two ends are rotationally connected to the inner wall of the mounting plate 3002, and then through the cooperation of the thread on the surface of the lead screw 3003 and the sliding frame 3004, the rotational motion of the motor is converted into a linear reciprocating motion of the sliding frame 3004 along the second slide rail 3011, thereby realizing the detection coverage of different positions inside the inflatable cabinet by the self-test unit 30; the output end of the second motor 3006 passes through The mounting frame 3005 is fixedly connected to the rotating rod 3007, and the mounting frame 3005 is fixed to the inner wall of the sliding frame 3004. This connection structure enables the power of the second motor 3006 to be efficiently transmitted to the rotating rod 3007, driving the fan blades 3008 fixedly connected to the surface of the rotating rod 3007 to rotate at high speed. The rotation of the fan blades 3008 forms an airflow in the inflatable cabinet, actively absorbs possible leaked gas and guides it into the color test tank 3009, and reacts with the colorless phenolphthalein solution inside. The through-connection design of the output ends of the two motors ensures the directness and stability of power transmission, avoids energy loss or component dislocation during transmission, and provides reliable power support for the automatic detection function of the self-test unit 30.

[0031] The interior of the color test tank 3009 is provided with a colorless phenolphthalein solution for detecting whether there is gas leakage.

[0032] The interior of the color test tank 3009 is provided with a colorless phenolphthalein solution, which is used as a detection medium to realize the visual judgment of the gas leakage of the inflatable cabinet. Its specific function is: when the inflatable cabinet needs to be tested for sealing, ammonia NH3 is first injected into the cabinet as a tracer gas, and the second motor 3006 of the self-test unit 30 drives the rotating rod 3007 and the fan blade 3008 to rotate, forming an airflow in the inflatable cabinet and actively absorbing the gas in the cabinet. If there is a leak in the sealing unit 10, the ammonia-containing gas will enter the interior of the color test tank 3009 through the leak point; since ammonia is alkaline when dissolved in water, it will react with the colorless phenolphthalein solution to cause the solution to change from a colorless to a colorless solution. The color changes to red. At this time, the operator or the monitoring system can directly observe the color change of the solution through the observation window 3010 opened on the surface of the color test tank 3009, so as to quickly determine whether there is a leak in the gas cabinet. This detection method using the principle of chemical color development is intuitive and sensitive, and does not need to rely on complex instrument analysis. Combined with the reciprocating movement of the sliding frame 3004 along the slide rail 2 3011, it can realize a comprehensive detection of the sealing performance of the gas cabinet at different positions. The combination of the color test tank 3009 and the colorless phenolphthalein solution constitutes the core detection module of the self-test unit 30, which provides a reliable technical means for real-time monitoring of the sealing performance of the gas cabinet.

[0033] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A gas cabinet sealing device with a self-checking function, comprising a gas cabinet structure (1), characterized in that: The inflatable cabinet structure (1) comprises a sealing unit (10), a prestressing unit (20) is provided inside the sealing unit (10), and a self-testing unit (30) is provided on the surface of the sealing unit (10); The prestressed unit (20) is used to provide prestress to the sealing unit (10) of the device to increase its sealing performance. The prestressed unit (20) comprises a spring (2001), a surface of the spring (2001) is fixedly connected to a connecting block (2003), a surface of the connecting block (2003) is fixedly connected to a limiting rod (2002), an end surface of the connecting block (2003) away from the spring (2001) is fixedly connected to an extrusion plate (2004), and the extrusion plate (2004) is fixedly connected to the surface of the extrusion plate (2004). A clamping block (2005) is fixedly connected to the surface, a rotating seat (2006) is fixedly connected to the inner wall of the extrusion plate (2004), a rotating block (2007) is rotatably connected to the inner wall of the rotating seat (2006), an end of the rotating block (2007) away from the rotating seat (2006) is rotatably connected to a sliding block (2008), a sliding rail 1 (2009) is slidably connected to the inner wall of the sliding block (2008), and a spring 2 (2010) is fixedly connected to the surface of the sliding block (2008).

2. The inflatable cabinet sealing device with self-checking function according to claim 1, characterized in that: The sealing unit (10) comprises a shell (1001), a sealing cover (1002) is hingedly connected to the surface of the shell (1001), an extrusion block (1003) is fixedly connected to the inner surface of the sealing cover (1002), a support frame (1005) is fixedly connected to the inner wall of the shell (1001), a sealing ring (1004) is fixedly connected to the surface of the support frame (1005), and a card slot is provided on the inner wall of the sealing cover (1002).

3. The inflatable cabinet sealing device with self-checking function according to claim 1, characterized in that: One end of the spring 1 (2001) away from the connecting block (2003) is fixedly connected to the housing (1001), both ends of the slide rail 1 (2009) are fixedly connected to the housing (1001), and the surface of the extrusion plate (2004) is slidably connected to the housing (1001).

4. The inflatable cabinet sealing device with self-checking function according to claim 1, characterized in that: The self-inspection unit (30) is used to inspect the sealing of the inflatable cabinet. The self-inspection unit (30) comprises a first motor (3001), a mounting plate (3002) is fixedly connected to the surface of the first motor (3001), a lead screw (3003) is fixedly connected to the output end of the first motor (3001), a sliding frame (3004) is threadedly connected to the surface of the lead screw (3003), a mounting frame (3005) is fixedly connected to the inner wall of the sliding frame (3004), and the mounting frame (3005) is fixedly connected to the inner wall of the sliding frame (3004). The surface of the frame (3005) is fixedly connected to a second motor (3006), the output end of the second motor (3006) is fixedly connected to a rotating rod (3007), the surface of the rotating rod (3007) is fixedly connected to a fan blade (3008), the inner wall of the sliding frame (3004) is threadedly connected to a color test pot (3009), the surface of the color test pot (3009) is provided with an observation window (3010), and the surface of the sliding frame (3004) is slidably connected to a second slide rail (3011).

5. The inflatable cabinet sealing device with self-checking function according to claim 4, characterized in that: The surface of the second slide rail (3011) is fixedly connected to the housing (1001), and the surface of the mounting plate (3002) is fixedly connected to the housing (1001).

6. The inflatable cabinet sealing device with self-checking function according to claim 4, characterized in that: Two mounting plates (3002) are provided, and the two mounting plates (3002) are linearly arranged along the surface of the housing (1001), and both ends of the lead screw (3003) are rotatably connected to the inner wall of the mounting plate (3002).

7. The inflatable cabinet sealing device with self-checking function according to claim 4, characterized in that: The output end of the first motor (3001) passes through the mounting plate (3002) and is fixedly connected to the lead screw (3003), and the output end of the second motor (3006) passes through the mounting frame (3005) and is fixedly connected to the rotating rod (3007).

8. The inflatable cabinet sealing device with self-checking function according to claim 4, characterized in that: The interior of the color test tank (3009) is provided with a colorless phenolphthalein solution for detecting whether there is gas leakage.

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