A leak detection tool and leak detection method for GIS equipment

Abstract

The present invention belongs to the technical field of structural component testing, and discloses a leak detection tool for GIS equipment, including a leak detection frame assembly, a leak detection sealing assembly is elastically pressed on the top of the leak detection frame assembly and is slidingly provided therethrough, and a leak detection tool platform assembly is lifted and lowered at the bottom of the leak detection frame assembly, and a group of leak detection limit assemblies are respectively used at both ends of the leak detection tool platform assembly to limit and fix the cover body and shaft body of the GIS equipment assembly during leak detection, and a leak detection reset assembly for controlling the GIS equipment assembly to perform closing and opening leak detection is provided at the bottom of the leak detection tool platform assembly. At the same time, the present invention realizes free switching of the GIS equipment assembly between closing leak detection, opening leak detection and dynamic leak detection modes through the use of electricity and magnetism, including the cooperation between the reset gear arm and the drive gear and the cooperation between the toggle arm, the traction arm and the leak detection limit assembly, thereby facilitating the leak detection processing of the present invention.

Description

Technical Field

[0001] The invention belongs to the technical field of structural component testing, and particularly relates to a leak detection tool and a leak detection method for GIS equipment. Background Art

[0002] GIS equipment is a gas-insulated fully enclosed switchgear. It encloses all primary equipment in the substation except the transformer, such as circuit breakers, disconnectors, grounding switches, mutual inductors, lightning arresters, busbars, connectors and outgoing line terminals, in a metal grounded casing filled with sulfur hexafluoride gas at a certain pressure.

[0003] The existing technology has the following problems: when the GIS equipment is opened and closed, the opening and closing shaft slides back and forth linearly on the equipment end cover. Since the opening and closing shaft is in a dynamic sealing state between the equipment end covers, and this seal is the key part that is most prone to leakage, when actually detecting leaks in the GIS equipment, the existing leak detection equipment cannot well meet the operation and detection requirements of the GIS equipment in various modes. Therefore, there is an urgent need to solve this problem. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a leak detection tool and a leak detection method for GIS equipment, which has the characteristic of convenient leak detection.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A leak detection tool for GIS equipment comprises a leak detection frame assembly, wherein a leak detection sealing assembly is elastically pressed and slidingly provided on the top of the leak detection frame assembly, and a leak detection tooling platform assembly is lifted and lowered at the bottom of the leak detection frame assembly, wherein a set of leak detection limit assemblies are respectively used at both ends of the leak detection tooling platform assembly to limit and fix the cover body and shaft body of the GIS equipment assembly during leak detection, and a leak detection reset assembly is provided at the bottom of the leak detection tooling platform assembly for controlling the GIS equipment assembly to perform closing and opening leak detection. When the leak detection tooling platform assembly rises on the leak detection frame assembly for leak detection, a snap-fitting and closed leak detection structure is formed between the leak detection sealing assembly and the leak detection tooling platform assembly, and a space compression-type negative pressure air guide structure is formed between the leak detection sealing assembly and the leak detection tooling platform assembly. Through the conductive cooperation between the leak detection reset assembly and the leak detection tooling platform assembly, the GIS equipment assembly in the leak detection sealing assembly can freely switch between closing leak detection, opening leak detection and dynamic leak detection modes.

[0006] In a preferred embodiment of a leak detection tool and method for GIS equipment, the leak detection frame assembly includes a leak detection frame, a cylinder is fixedly provided at the bottom of the leak detection frame, and a piston disc is fixedly provided at the top of the leak detection frame via a vertical arm, an air outlet pipe with a one-way valve is provided on the piston disc, and a return spring is sleeved on the outside of the vertical arm;

[0007] The leak detection sealing assembly includes a leak detection sealing cover, a guide chute and a trachea chute are provided on the top of the leak detection sealing cover, and a gas detection sensor for sulfur hexafluoride gas detection is fixedly provided on the inner wall of the leak detection sealing cover;

[0008] The GIS equipment assembly includes an equipment end cover, and a closing and opening shaft rod for controlling the reciprocating movement of closing and opening the switch is provided at the front end of the equipment end cover.

[0009] In a preferred embodiment of a leak detection tool and a leak detection method for GIS equipment, the leak detection limit assembly includes a leak detection limit platform, a pulling arm is fixedly provided at one end of the leak detection limit platform, and an inner guide rail groove is opened inside the leak detection limit platform, a double-threaded screw is rotatably provided inside the inner guide rail groove, both ends of the double-threaded screw are threaded with inner threaded sliders, a limit arm is fixedly provided on the top of the inner threaded slider, a motor for driving the double-threaded screw to rotate is fixedly provided on one side of the leak detection limit platform, and a limit platform slider is fixedly provided at the bottom of the leak detection limit platform.

[0010] In a preferred embodiment of a leak detection tool and method for GIS equipment, the leak detection reset assembly includes a reset tooth arm, a strong magnet and a tightening spring are fixedly provided at both ends of the reset tooth arm, and a tooth arm slider is fixedly provided on the back of the reset tooth arm;

[0011] The leak detection tooling assembly includes a tooling table, a tooling shaft is rotatably provided at the middle part of the top of the tooling table, and tooling table track grooves are opened at both ends of the top of the tooling table, a toggle arm and a drive gear are fixedly provided at the top and bottom of the tooling shaft respectively, a traction arm is rotatably provided at both ends of the toggle arm, and an electromagnet, a grooved vertical plate and a base frame ear plate are fixedly provided on one side of the bottom end of the tooling table respectively.

[0012] In a preferred embodiment of a leak detection tool and method for GIS equipment, the leak detection cover slides through a guide slot and a vertical arm, the piston disc is arranged inside the leak detection cover, the reset spring is arranged on the top of the leak detection cover, the two ends of the reset spring respectively abut against the top of the leak detection frame and the top of the leak detection cover, and the air outlet pipe passes through the air pipe slot and the top of the leak detection cover.

[0013] In a preferred embodiment of a leak detection tool and method for GIS equipment, the motor drives the double-threaded screw to rotate in the leak detection limit platform, and the two internally threaded sliders rotate at both ends of the double-threaded screw. At this time, a limiting structure for clamping the GIS equipment component is formed between the two limiting arms.

[0014] In a preferred embodiment of a leak detection tool and method for GIS equipment, the limit platform slider on the leak detection limit platform slides back and forth in the tooling platform track groove, and the arm body of the traction arm away from the toggle arm is rotatably connected to the pulling arm through an axle pin.

[0015] In a preferred embodiment of a leak detection tool and method for GIS equipment, the reset tooth arm slides back and forth on a grooved vertical plate through a tooth arm slider, the end of the tightening spring away from the reset tooth arm is fixed to the base frame ear plate, the strong magnet is close to the electromagnet, the reset tooth arm is engaged with the drive gear, and the top of the cylinder is fixed to the bottom table of the tooling table.

[0016] A leak detection method for GIS equipment comprises the following steps:

[0017] S1: First, adjust the GIS equipment assembly to the closed state. At this time, the opening and closing shaft slides linearly toward the inside of the equipment end cover. At this time, two sets of leakage detection limit assemblies are respectively fixed to the equipment end cover and the opening and closing shaft of the GIS equipment assembly. That is, at this time, the GIS equipment assembly is fixed on the leakage detection workbench assembly by the two sets of leakage detection limit assemblies;

[0018] S2: The cylinder is extended to lift the leak detection workbench assembly and form a closed cover structure with the leak detection sealing assembly. At this time, the piston disc moves relative to the leak detection sealing assembly, forming a negative pressure air guide structure in the leak detection sealing assembly.

[0019] S3: Performing a leak test on the closed GIS equipment component by using the gas detection sensor, and then adjusting the GIS equipment component to the open state by using the leak detection reset component after the leak test is completed, and performing an open state leak test;

[0020] S4: By frequently switching the power on and off between the leakage detection reset component and the leakage detection workbench component, leakage detection of the GIS equipment component in the dynamic mode of closing and opening is realized.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is used, the device end cover and the opening and closing shaft of the GIS device assembly are clamped and fixed by two sets of leakage detection limit assemblies, that is, the GIS device assembly is clamped and fixed on the leakage detection workbench assembly by the two sets of leakage detection limit assemblies, so that the workpiece is fixed during leakage detection, and the leakage detection lift of the leakage detection workbench assembly is achieved by the extension of the cylinder. At this time, a closed buckle structure is formed between the leakage detection workbench assembly and the leakage detection sealing assembly. Since the height of the piston disc remains unchanged, the space between the leakage detection sealing cover and the workbench becomes smaller. At this time, a negative pressure space is formed between the leak detection enclosure, the workbench and the piston disk. If there is a gas leak in the GIS equipment component at this time, the leaked gas can be quickly separated in the leak detection enclosure through this negative pressure environment, thereby facilitating the detection of the gas detection sensor. At the same time, the present invention uses electricity and magnetism, including the coordination of the reset gear arm and the drive gear and the coordination between the toggle arm, the traction arm and the leak detection limit assembly, to achieve free switching of the GIS equipment component between the closed leak detection, open leak detection and dynamic leak detection modes, thereby facilitating the leak detection process of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An exploded view of the present invention;

[0023] Figure 2 A perspective view of the present invention;

[0024] Figure 3 is a cross-sectional view of the present invention;

[0025] Figure 4 A perspective view of a leak detection frame assembly according to the present invention;

[0026] Figure 5 A perspective view of the leak detection and sealing assembly of the present invention;

[0027] Figure 6 A perspective view of a leak detection tooling assembly according to the present invention;

[0028] Figure 7 A perspective view of the leak detection and limiting assembly and the GIS equipment assembly of the present invention;

[0029] Figure 8 It is a three-dimensional diagram of the leakage detection and reset assembly of the present invention.

[0030] In the figure: 100, leak detection frame assembly; 101, leak detection frame; 102, cylinder; 103, vertical arm; 104, piston plate; 105, one-way valve; 106, air outlet pipe; 107, return spring; 200, leak detection sealing assembly; 201, leak detection sealing cover; 202, guide slide; 203, air pipe slide; 204, gas detection sensor; 300, leak detection limit assembly; 301, leak detection limit platform; 302, limit platform slider; 303, pulling arm; 304, inner guide rail slide; 305, double-thread screw; 306, motor ; 307, internal thread slider; 308, limit arm; 400, GIS equipment assembly; 401, equipment end cover; 402, opening and closing shaft; 500, leakage detection reset assembly; 501, reset gear arm; 502, gear arm slider; 503, strong magnet; 504, tightening spring; 600, leakage detection tooling assembly; 601, tooling table; 602, table shaft; 603, toggle arm; 604, traction arm; 605, drive gear; 606, tooling table track groove; 607, base frame ear plate; 608, slotted vertical plate; 609, electromagnet. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-8 As shown, the present invention provides a leak detection tool for GIS equipment, including a leak detection frame assembly 100, the top of the leak detection frame assembly 100 is elastically pressed and slidingly provided with a leak detection sealing assembly 200, and the bottom of the leak detection frame assembly 100 is provided with a leak detection tooling platform assembly 600, and the two ends of the leak detection tooling platform assembly 600 are respectively provided with a set of leak detection limit assemblies 300 to limit and fix the cover body and shaft body of the GIS equipment assembly 400 during leak detection, and the bottom of the leak detection tooling platform assembly 600 is provided with a control device for controlling the GIS equipment assembly 400 to perform closing and opening leakage detection. When the leak detection reset component 500 and the leak detection workbench component 600 are raised on the leak detection frame component 100 for leak detection, a snap-fit ​​closed leak detection structure is formed between the leak detection sealing component 200 and the leak detection workbench component 600, and a space compression type negative pressure air guide structure is formed between the leak detection sealing component 200 and the leak detection workbench component 600. Through the conductive coordination between the leak detection reset component 500 and the leak detection workbench component 600, the GIS equipment component 400 in the leak detection sealing component 200 can freely switch between the closed leakage detection, open leakage detection and dynamic leakage detection modes.

[0033] In a preferred embodiment, see Figure 4 The leak detection frame assembly 100 includes a leak detection frame 101, a cylinder 102 is fixedly provided at the bottom of the leak detection frame 101, and a piston disk 104 is fixedly provided on the top of the leak detection frame 101 through a vertical arm 103, an air outlet pipe 106 with a one-way valve 105 is provided on the piston disk 104, and a return spring 107 is provided on the outside of the vertical arm 103.

[0034] In a preferred embodiment, see Figure 5 The leak detection sealing component 200 includes a leak detection sealing cover 201, a guide slot 202 and a trachea slot 203 are provided on the top of the leak detection sealing cover 201, and a gas detection sensor 204 for sulfur hexafluoride gas detection is fixedly provided on the inner wall of the leak detection sealing cover 201. The leak detection sealing cover 201 slides through the guide slot 202 and the vertical arm 103, the piston disc 104 is arranged inside the leak detection sealing cover 201, and the reset spring 107 is arranged on the top of the leak detection sealing cover 201. The two ends of the reset spring 107 respectively abut against the top of the leak detection frame 101 and the top of the leak detection sealing cover 201, and the air outlet pipe 106 passes through the trachea slot 203 and the top of the leak detection sealing cover 201.

[0035] In a preferred embodiment, see Figure 7 The leakage detection limit assembly 300 includes a leakage detection limit platform 301, a pulling arm 303 is fixedly provided at one end of the leakage detection limit platform 301, and an inner guide rail slot 304 is opened inside the leakage detection limit platform 301, a double-threaded screw 305 is rotatably provided inside the inner guide rail slot 304, both ends of the double-threaded screw 305 are threaded with internal threaded sliders 307, and a limit arm 308 is fixedly provided on the top of the internal threaded slider 307, a motor 306 for driving the double-threaded screw 305 to rotate is fixedly provided on one side of the leakage detection limit platform 301, and a limit platform slider 302 is fixedly provided at the bottom of the leakage detection limit platform 301, the motor 306 drives the double-threaded screw 305 to rotate in the leakage detection limit platform 301, and the two internal threaded sliders 307 are threadedly rotated at both ends of the double-threaded screw 305. At this time, a limit structure for clamping the GIS equipment component 400 is formed between the two limit arms 308.

[0036] In a preferred embodiment, see Figure 7 The GIS equipment assembly 400 includes an equipment end cover 401, and a closing and opening shaft rod 402 for controlling the reciprocating movement of closing and opening is provided at the front end of the equipment end cover 401.

[0037] In a preferred embodiment, see Figure 8 The leakage detection reset assembly 500 includes a reset tooth arm 501 , at both ends of which a strong magnet 503 and a tightening spring 504 are fixedly provided, and a tooth arm slider 502 is fixedly provided on the back of the reset tooth arm 501 .

[0038] In a preferred embodiment, see Figure 6 The leak detection tooling assembly 600 includes a tooling table 601, a table shaft 602 is rotatably provided at the middle of the top of the tooling table 601, and tooling table track grooves 606 are provided at both ends of the top of the tooling table 601. A toggle arm 603 and a driving gear 605 are fixedly provided at the top and bottom of the table shaft 602 respectively. A traction arm 604 is rotatably provided at both ends of the toggle arm 603. An electromagnet 609, a grooved vertical plate 608 and a bottom frame ear plate 607 are fixedly provided on one side of the bottom end of the tooling table 601 respectively. The limit table slide on the leak detection limit table 301 Block 302 slides back and forth in the track groove 606 of the workbench, and the arm body of the traction arm 604 away from the toggle arm 603 is rotatably connected to the pulling arm 303 through the axle pin. The reset tooth arm 501 slides back and forth on the grooved vertical plate 608 through the tooth arm slider 502. The end of the tightening spring 504 away from the reset tooth arm 501 is fixed on the base frame ear plate 607, the strong magnet 503 is close to the electromagnet 609, the reset tooth arm 501 is engaged with the driving gear 605, and the top of the cylinder 102 is fixed on the bottom table body of the workbench 601.

[0039] A leak detection method for GIS equipment comprises the following steps:

[0040] S1: First, adjust the GIS equipment assembly 400 to the closed state. At this time, the opening and closing shaft 402 slides linearly toward the inside of the equipment end cover 401. At this time, the two sets of leakage detection limit assemblies 300 are respectively fixed to the equipment end cover 401 and the opening and closing shaft 402 of the GIS equipment assembly 400. That is, the GIS equipment assembly 400 is now fixed on the leakage detection tooling assembly 600 by the two sets of leakage detection limit assemblies 300.

[0041] S2: The cylinder 102 is extended to lift the leak detection workbench assembly 600 and form a closed cover structure with the leak detection sealing assembly 200. At this time, the piston plate 104 moves relative to the leak detection sealing assembly 200, forming a negative pressure air guide structure in the leak detection sealing assembly 200.

[0042] S3: Performing a leak test on the closed GIS device assembly 400 through the gas detection sensor 204. After the leak test is completed, the GIS device assembly 400 is adjusted to the open state through the leak detection reset assembly 500 and then performs an open leak test;

[0043] S4: By frequently switching the power on and off between the leakage detection reset component 500 and the leakage detection workbench component 600, leakage detection of the GIS equipment component 400 in the dynamic mode of closing and opening is achieved.

[0044] The working principle of the present invention is as follows: when the present invention is used, the double-threaded screw 305 is driven to rotate by the motor 306. At this time, the two internally threaded sliders 307 at both ends of the double-threaded screw 305 drive the two limit arms 308 to approach each other and form a clamping structure. At this time, the device end cover 401 and the opening and closing shaft 402 of the GIS equipment assembly 400 are clamped and fixed by two sets of leakage detection limit assemblies 300, that is, the GIS equipment assembly 400 is clamped and limited and fixed on the leakage detection workbench assembly 600 by the two sets of leakage detection limit assemblies 300, so as to realize the fixation of the workpiece during leakage detection. It should be noted that, in the initial state, the opening and closing shaft 402 needs to be pushed straight toward the device end cover 401, so that the GIS equipment assembly 400 is in the closed state during leakage detection.

[0045] On the basis of the above, the leakage detection tooling assembly 600 is lifted by the extension of the cylinder 102. At this time, a closed buckle structure is formed between the leakage detection tooling assembly 600 and the leakage detection sealing assembly 200. At this time, the gas detection sensor 204 can be used to detect whether there is a sulfur hexafluoride gas leak between the equipment end cover 401 and the opening and closing shaft rod 402, including the body. At the same time, during the rising process of the leakage detection tooling assembly 600, due to the piston action of the piston disc 104 in the leakage detection sealing cover 201, when the leakage detection tooling assembly 60 0 continues to rise, the workbench 601 will push the leak detection sealed cover 201 to rise. At this time, since the height of the piston disk 104 remains unchanged, the space between the leak detection sealed cover 201 and the workbench 601 becomes smaller. At this time, the space formed between the leak detection sealed cover 201, the workbench 601 and the piston disk 104 becomes a negative pressure space. At this time, if there is a gas leak in the GIS equipment component 400, the leaked gas can be quickly separated in the leak detection sealed cover 201 through this negative pressure environment, thereby facilitating the detection of the gas detection sensor 204.

[0046] On the basis of the above, the two sets of leakage detection limit assemblies 300 are slidably connected at both ends of the leakage detection workbench assembly 600. At this time, the toggle arm 603 pulls the two sets of leakage detection limit assemblies 300 through the two traction arms 604. When performing the opening detection, the electromagnet 609 is energized. At this time, the electromagnet 609 is magnetic. The electromagnet 609 gives the strong magnet 503 a repulsive magnetic force and pushes the reset gear arm 501 to move to the right. At this time, the reset gear arm 501 drives the drive gear 605 to rotate counterclockwise. At this time, the toggle The arm 603 rotates counterclockwise. At this time, the toggle arm 603 pushes the two sets of leakage detection limit assemblies 300 to move away through the two traction arms 604. At this time, the opening and closing shaft 402 on the GIS equipment assembly 400 and the equipment end cover 401 are in a stretched opening structure. In this way, the opening processing of the GIS equipment assembly 400 is realized, that is, the opening processing of the GIS equipment assembly 400 is realized through the power-on technology, thereby facilitating the leakage detection when the GIS equipment assembly 400 is opened.

[0047] On the basis of the above, when the electromagnet 609 is not energized, the tensioning spring 504 pushes the reset tooth arm 501 to move to the left, and the toggle arm 603 rotates clockwise. At this time, the toggle arm 603 drives the two sets of leakage detection limit assemblies 300 to approach through the two traction arms 604, that is, the GIS equipment assembly 400 is in the closed state at this time. In actual use, by frequently energizing and de-energizing the electromagnet 609, the GIS equipment assembly 400 is frequently closed and opened. At this time, the GIS equipment assembly 400 can be dynamically leak-detected through the leakage detection sealing assembly 200.

[0048] The present invention uses electricity and magnetism, including the coordination between the reset gear arm 501 and the drive gear 605, and the coordination between the toggle arm 603, the traction arm 604 and the leakage detection limit assembly 300, to achieve free switching of the GIS equipment assembly 400 between the closed leakage detection, open leakage detection and dynamic leakage detection modes, thereby facilitating the leakage detection process of the present invention.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A leak detection tool for GIS equipment, comprising a leak detection frame assembly (100), characterized in that: The leak detection frame assembly (100) is elastically pressed and slidably provided with a leak detection sealing assembly (200) on the top, and a leak detection workbench assembly (600) is provided at the bottom of the leak detection frame assembly (100) for lifting. The two ends of the leak detection workbench assembly (600) are respectively provided with a set of leak detection limit assemblies (300) to limit and fix the cover body and the shaft body of the GIS equipment assembly (400) during leak detection. The bottom of the leak detection workbench assembly (600) is provided with a leak detection reset assembly (500) for controlling the GIS equipment assembly (400) to perform closing and opening leak detection. The leak detection frame assembly (100) comprises a leak detection frame (101), a cylinder (102) is fixedly provided at the bottom of the leak detection frame (101), and a piston disc (104) is fixedly provided at the top of the leak detection frame (101) via a vertical arm (103), an air outlet pipe (106) with a one-way valve (105) is provided on the piston disc (104), and a return spring (107) is sleeved on the outside of the vertical arm (103). When the leak detection workbench assembly (600) is raised on the leak detection frame assembly (100), a closed leak detection structure is formed between the piston disc (104) and the leak detection workbench assembly (600), and negative pressure is formed between the piston disc (104) and the leak detection workbench assembly (600). Through the electrical on-off connection between the leak detection reset assembly (500) and the leak detection workbench assembly (600), the GIS equipment assembly (400) in the leak detection closed assembly (200) can be freely switched between closed leak detection, open leak detection and dynamic leak detection modes.

2. The leak detection tool for GIS equipment according to claim 1, characterized in that: The leak detection sealing assembly (200) comprises a leak detection sealing cover (201), a guide chute (202) and a trachea chute (203) are provided on the top of the leak detection sealing cover (201), and a gas detection sensor (204) for detecting sulfur hexafluoride gas is fixedly provided on the inner wall of the leak detection sealing cover (201); The GIS equipment assembly (400) comprises an equipment end cover (401), and a closing and opening shaft rod (402) for controlling the reciprocating movement of closing and opening is provided at the front end of the equipment end cover (401).

3. The leak detection tool for GIS equipment according to claim 2, characterized in that: The leakage detection limit assembly (300) comprises a leakage detection limit platform (301), a pulling arm (303) is fixedly provided at one end of the leakage detection limit platform (301), an inner guide rail slot (304) is provided inside the leakage detection limit platform (301), a double-threaded screw (305) is rotatably provided inside the inner guide rail slot (304), both ends of the double-threaded screw (305) are threadedly provided with an inner threaded slider (307), a limit arm (308) is fixedly provided on the top of the inner threaded slider (307), a motor (306) for driving the double-threaded screw (305) to rotate is fixedly provided on one side of the leakage detection limit platform (301), and a limit platform slider (302) is fixedly provided at the bottom of the leakage detection limit platform (301).

4. The leak detection tool for GIS equipment according to claim 3, characterized in that: The leakage detection reset assembly (500) comprises a reset tooth arm (501), two ends of the reset tooth arm (501) are respectively fixedly provided with a strong magnet (503) and a tightening spring (504), and the back of the reset tooth arm (501) is fixedly provided with a tooth arm slider (502); The leak detection tooling assembly (600) comprises a tooling table (601), a table shaft (602) being rotatably provided at the middle of the top of the tooling table (601), and tooling table track grooves (606) being provided at both ends of the top of the tooling table (601), a toggle arm (603) and a drive gear (605) being fixedly provided at the top and bottom of the table shaft (602), a traction arm (604) being rotatably provided at both ends of the toggle arm (603), and an electromagnet (609), a grooved vertical plate (608), and a bottom frame ear plate (607) being fixedly provided on one side of the bottom end of the tooling table (601).

5. The leak detection tool for GIS equipment according to claim 2, characterized in that: The leak detection closed cover (201) slides through the vertical arm (103) via the guide chute (202), the piston disc (104) is arranged inside the leak detection closed cover (201), the return spring (107) is arranged on the top of the leak detection closed cover (201), and the two ends of the return spring (107) respectively contact the top of the leak detection work frame (101) and the top of the leak detection closed cover (201), and the air outlet pipe (106) passes through the air pipe chute (203) and the top of the leak detection closed cover (201).

6. The leak detection tool for GIS equipment according to claim 3, characterized in that: The motor (306) drives the double-threaded screw (305) to rotate in the leak detection limit platform (301), and the two internally threaded sliders (307) are threadedly rotated at both ends of the double-threaded screw (305). At this time, a limit structure for clamping the GIS equipment component (400) is formed between the two limit arms (308).

7. The leak detection tool for GIS equipment according to claim 4, characterized in that: The limit platform slider (302) on the leak detection limit platform (301) slides back and forth in the tooling platform track groove (606), and the arm body of the traction arm (604) away from the toggle arm (603) is rotatably connected to the pulling arm (303) via a shaft pin.

8. The leak detection tool for GIS equipment according to claim 4, characterized in that: The reset tooth arm (501) slides back and forth on the grooved vertical plate (608) through the tooth arm slider (502), and the end of the tightening spring (504) away from the reset tooth arm (501) is fixed on the base frame ear plate (607), the strong magnet (503) is close to the electromagnet (609), the reset tooth arm (501) is engaged with the driving gear (605), and the top of the cylinder (102) is fixed on the bottom table of the tooling table (601).

9. A leak detection method for GIS equipment, using the leak detection tool for GIS equipment according to any one of claims 4 to 8, characterized in that: The following steps are involved: S1: First, the GIS device assembly (400) is adjusted to the closed state. At this time, the opening and closing shaft (402) slides linearly toward the inside of the device end cover (401). At this time, the two sets of leakage detection limit assemblies (300) are respectively fixed to the device end cover (401) and the opening and closing shaft (402) of the GIS device assembly (400). That is, at this time, the GIS device assembly (400) is fixed on the leakage detection workbench assembly (600) by the two sets of leakage detection limit assemblies (300); S2: The leak detection workbench assembly (600) is lifted by extending the cylinder (102) to form a closed cover structure that is engaged with the leak detection sealing assembly (200). At this time, the piston disc (104) moves relative to the leak detection sealing assembly (200), and a negative pressure air guide structure is formed in the leak detection sealing assembly (200); S3: performing a leak test on the closed GIS device component (400) through the gas detection sensor (204), and after the closing leak test is completed, adjusting the GIS device component (400) to the open state through the leak detection reset component (500) and performing an open leak test; S4: By switching the power between the leakage detection reset component (500) and the leakage detection workbench component (600), the electromagnet (609) is energized and de-energized, thereby realizing leakage detection of the GIS equipment component (400) in the closing and opening dynamic modes.

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