GIS switch shell with sealed self-checking function

Abstract

The application discloses a GIS switch shell with a sealing self-checking function, and relates to the technical field of GIS switch equipment.The GIS switch shell comprises a heat dissipation shell, an inner shell, a first pipe body, a first flange, a second pipe body, a second flange, a bottom plate and a third flange.The heat dissipation shell adopts a heat siphon heat dissipation technology, continuously forms a stable heat dissipation cycle, does not need any mechanical driving component, and is therefore silent during the whole cooling process, and has no electromagnetic interference.The inner shell adopts a moisture absorption technology, can automatically absorb liquid in the shell and automatically replace the moisture absorption paper tape, can continuously work without manual intervention, effectively prevents risks such as short circuit and performance attenuation caused by moisture intrusion, prolongs the maintenance period of the equipment, can automatically detect the sealing integrity of the inner shell, can timely alarm when gas leakage and temperature are too high, improves the reliability of equipment operation, and has important significance for large-scale power grid safety guarantee.

Description

Technical Field

[0001] This invention relates to the field of GIS switchgear technology, specifically a GIS switch housing with a sealing self-test function. Background Technology

[0002] GIS, or Gas Insulated Switchgear, is a highly integrated power equipment that organically integrates primary equipment in a substation, such as circuit breakers, disconnectors, grounding switches, voltage transformers, current transformers, and surge arresters, into a compact whole through optimized design. All these devices or components are enclosed within the GIS switch housing, which is filled with pressurized SF6 insulating gas; hence, it is also called SF6 fully enclosed switchgear. This equipment not only improves the safety of the power system but also greatly simplifies the installation and maintenance process. However, existing technology has drawbacks: moisture may enter the existing GIS switch housing, causing corrosion of internal components; and during long-term operation, it is difficult to detect gas leaks in a timely manner, which can cause harm to equipment and personnel. Summary of the Invention

[0003] The purpose of this invention is to provide a GIS switch housing with a sealing self-test function to solve the problems mentioned in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: The GIS switch housing includes a heat dissipation housing, a base plate is installed at one end of the heat dissipation housing, an inner housing is installed inside the heat dissipation housing, one end of the inner housing is installed on the base plate, a first tube is installed on one side of the inner housing, a first flange is installed at one end of the first tube, a second tube is installed on the other side of the inner housing, a second flange is installed at one end of the second tube, a third tube is installed between the first tube and the second tube, the third tube is installed on the inner housing, and a third flange is installed at one end of the third tube.

[0005] The heat dissipation housing includes an outer shell and an inner shell installed inside the outer shell. A first sealing plate is installed at one end of the outer shell, and a second sealing plate is installed at the other end of the outer shell. The second sealing plate is installed on a base plate. The first sealing plate is provided with heat dissipation holes. The inner wall of the outer shell is provided with spiral grooves. The outer shell is provided with cold air holes. A liquid storage box is installed on the inner wall of the outer shell. A heat dissipation pipe is installed at one end of the liquid storage box. A condenser pipe is installed on the heat dissipation pipe. A return pipe is installed at one end of the condenser pipe. The return pipe is installed on the liquid storage box. The condenser pipe is located on one side of the cold air holes. When the components inside the GIS switch housing heat up, the components near the heat dissipation pipe conduct the heat to the liquid storage box. The diffuser in the liquid storage box absorbs heat and vaporizes, instantly carrying away a large amount of latent heat, effectively reducing the surface temperature of the components and preventing further heat accumulation. The vaporized diffuser enters the heat dissipation pipe and then enters the condenser. The hot air in other areas rises and forms a vortex when passing through the spiral groove, and is discharged from the heat exhaust hole. A negative pressure zone is formed at the cold air hole, which draws in cold air to cool the vapor in the condenser, causing the vapor to quickly condense back into liquid. The liquid diffuser flows from the condenser to the return pipe and finally back to the liquid storage box, continuously forming a stable heat dissipation cycle.

[0006] The inner shell includes a protective shell, one end of which is mounted on the base plate. An observation port is provided on the protective shell, and a transparent cover is installed on the outside of the observation port. A filter plate is installed inside the first tube, and a dehumidification device is installed on the filter plate. A sealing self-testing device is installed inside the protective shell, and an alarm device is installed at one end of the sealing self-testing device. The sealing self-testing device is located on one side of the observation port.

[0007] The dehumidification device includes a first rotating shaft, an mounting plate installed on the inner wall of the protective shell, the first rotating shaft rotating on the mounting plate, a first rocker arm rotatably connected to the first rotating shaft, a first gear installed on one side of the first rocker arm, a ratchet device installed on one side of the first rocker arm, a connecting rod rotatably connected to one end of the first rocker arm, a second rocker arm rotatably connected to one end of the connecting rod, a second rotating shaft and a fixing block installed on one side of the filter plate, the second rocker arm rotating on the second rotating shaft, a first spring installed between the second rocker arm and the fixing block, a liquid suction device installed on the first rotating shaft, and the second rocker arm located above the liquid suction device.

[0008] The ratchet device includes a second gear, on which a third shaft is mounted. The third shaft rotates on a mounting plate. The second gear meshes with the first gear. A third rocker arm is mounted on the third shaft. One end of the third rocker arm is rotatably connected to a first pawl, and the other end of the third rocker arm is rotatably connected to a second pawl. A second spring is installed between the first and second pawls. A ratchet wheel is mounted on the first shaft. The first pawl and the ratchet wheel engage, and the second pawl and the ratchet wheel also engage.

[0009] The liquid suction device includes a fourth rotating shaft, which is mounted on a filter plate. A first rotating wheel and a third gear are rotatably connected to the fourth rotating shaft. A fifth rotating shaft is mounted on the filter plate, which is rotatably connected to a second rotating wheel and a fourth gear. A moisture-absorbing paper belt is mounted on the first and second rotating wheels and is located below a second rocker arm. A fifth gear is mounted on one end of the first rotating shaft, and drive belts are mounted on the third, fourth, and fifth gears. When humid gas enters the first tube, the absorbent paper tape located at the filter plate absorbs the moisture in the gas. After the absorbent paper tape is saturated with moisture, the radially expanding absorbent paper tape pushes the second rocker to rotate around the second shaft. The second rocker drives the connecting rod to rotate, which in turn drives the first rocker to rotate around the first shaft. The first rocker drives the first gear to rotate, which in turn drives the second gear to rotate. The second gear drives the third shaft to rotate, which in turn drives the third rocker to rotate around the third shaft. The third rocker drives the first pawl to push the ratchet to rotate, while the second pawl prevents the ratchet from reversing. The ratchet drives the first shaft to rotate, which in turn drives the fifth gear to rotate. The fifth gear drives the transmission belt to rotate, which in turn drives the fourth and fifth gears to rotate. The fourth gear drives the first wheel to rotate, and the fifth gear drives the second wheel to rotate. The first and second wheels then drive the absorbent paper tape to rotate, moving the next section of fresh absorbent paper tape to the moisture-absorbing position. This ensures the dryness inside the GIS switch housing, significantly extends the equipment's maintenance cycle, and effectively prevents risks such as short circuits, component corrosion, or performance degradation caused by moisture intrusion.

[0010] The sealing self-testing device includes a bellows, a through groove on the inner wall of the protective shell, a bellows installed in the through groove, a rack installed inside the bellows, a support plate installed on the inner wall of the protective shell, a tenth rotating shaft rotatably connected to the support plate, a sixth gear installed at one end of the tenth rotating shaft, the rack and the sixth gear meshing, a first support block and a first bevel gear installed on the tenth rotating shaft, a sixth rotating shaft rotatably connected to the other end of the first support block, a second bevel gear installed at one end of the sixth rotating shaft, the first and second bevel gears meshing, a third bevel gear installed at the other end of the sixth rotating shaft, a second support block installed on the sixth rotating shaft, a seventh rotating shaft rotatably connected to one end of the second support block, a fourth bevel gear installed at one end of the seventh rotating shaft, the third and fourth bevel gears meshing, the seventh rotating shaft rotates on the inner wall of the protective shell, and an indicator plate is installed on the seventh rotating shaft, the indicator plate being installed on one side of the observation port.

[0011] The alarm device includes an eighth rotating shaft, which is mounted on the inner wall of the protective shell. A first L-shaped plate is rotatably connected to the eighth rotating shaft. A metal block is mounted on one side of the first L-shaped plate and is mounted on the inner wall of the protective shell. A ninth rotating shaft, a first fixing plate, and a second fixing plate are mounted on the inner wall of the protective shell. A third spring is installed between the first fixing plate and the first L-shaped plate. A second L-shaped plate is rotatably connected to the ninth rotating shaft. A fourth spring is installed between the second fixing plate and the second L-shaped plate. When a leak occurs, the bellows compresses and retracts, causing the rack to move away from the bellows. The rack then drives the sixth gear to rotate, which in turn drives the tenth shaft to rotate. The tenth shaft then drives the first bevel gear to rotate, which in turn drives the second bevel gear to rotate. The second bevel gear then drives the sixth shaft to rotate, which in turn drives the third bevel gear to rotate, which in turn drives the fourth bevel gear to rotate. The fourth bevel gear then drives the seventh shaft to rotate, which in turn drives the indicator plate to rotate. When the indicator plate reaches its lowest point, it causes the first L-shaped plate to rotate around the eighth shaft. The first L-shaped plate strikes the metal block, and the third spring causes the first L-shaped plate to return to its initial position. When the temperature inside the casing rises, the air pressure inside the casing increases, and the bellows stretches. At this time, the indicator plate will rotate to the other end. Personnel can observe the position of the indicator plate through the observation port to know whether the current temperature is within the normal range. When the temperature inside the casing is too high, the bellows stretches to its longest length. At this time, the indicator plate rotates to the bottom of the other end. The indicator plate drives the second L-shaped plate to rotate around the ninth axis. The second L-shaped plate strikes the metal block, and the fourth spring drives the second L-shaped plate back to the initial position. This facilitates timely handling of gas leaks and excessive temperatures, ensuring the safety of equipment and personnel.

[0012] The condenser tube is positioned higher on the heat dissipation tube than it is on the return tube.

[0013] The liquid storage box is made of thermally conductive material and is filled with a diffusion liquid.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention adopts automatic moisture absorption technology, which can automatically absorb liquid inside the housing. The moisture absorption unit automatically captures and absorbs water vapor and condensed liquid in the gas. When part of the moisture absorption paper tape is fully absorbed, the saturated moisture absorption unit is moved out of the working area, and the next brand-new moisture absorption unit is precisely positioned at the moisture absorption position. It can operate continuously without manual intervention, ensuring the dryness inside the GIS switch housing, greatly extending the maintenance cycle of the equipment, and effectively preventing risks such as short circuits, component corrosion or performance degradation caused by moisture intrusion. 2. This invention uses thermosiphon cooling technology. When the heat generated by the component is conducted to the evaporation section, the working fluid absorbs heat and vaporizes, instantly carrying away a large amount of latent heat, effectively reducing the surface temperature of the component and preventing further heat accumulation. The steam in the pipe is cooled by cold air, which causes the steam to condense back into liquid quickly, continuously forming a stable working fluid cycle. No mechanical drive components are required, so the entire cooling process is quiet and free from electromagnetic interference. 3. This invention employs a sealing self-inspection technology. After the housing is filled with gas, it performs a real-time self-inspection of the housing's sealing integrity and automatically detects any leaks. An alarm is automatically triggered when a leak occurs. Simultaneously, the internal temperature range of the housing can be observed through the observation port. An alarm is automatically triggered when the internal temperature of the housing is too high. This allows for timely handling of gas leaks and excessively high temperatures, ensuring the safety of equipment and personnel. Since no sensors are required, electromagnetic interference can be effectively prevented, improving the reliability of equipment operation. Attached Figure Description

[0015] Figure 1 This is a perspective view of the GIS switch housing of the present invention; Figure 2 This is a perspective view of the heat dissipation housing of the present invention; Figure 3 This is a perspective view of the inner casing of the present invention; Figure 4 The three-dimensional shape of the moisture-absorbing device of the present invention Figure 1 ; Figure 5 The three-dimensional shape of the moisture-absorbing device of the present invention Figure 2 ; Figure 6 This is a perspective view of the liquid suction device of the present invention; Figure 7 This is a perspective view of the sealing self-testing device of the present invention; Figure 8 This is a perspective view of the alarm device of the present invention.

[0016] In the diagram: 1. Heat dissipation shell; 2. Inner shell; 3. First tube; 4. First flange; 5. Second tube; 6. Second flange; 7. Base plate; 8. Third flange; 11. Outer shell; 12. First sealing plate; 13. Spiral groove; 14. Cold air vent; 15. Liquid storage box; 16. Heat dissipation pipe; 17. Condenser pipe; 18. Second sealing plate; 21. Protective shell; 22. Filter plate; 23. Dehumidification device; 24. Sealing self-test device; 25. Observation port; 26. Alarm device; 231. First rocker arm; 232. First gear; 233. Ratchet device; 234. Connecting rod; 235. Second rocker arm; 236. Second rotating shaft; 237. Fixing block; 238. Liquid suction device; 2331. Second gear; 2332. Third rocker arm; 2 333, Ratchet; 2334, First Pad; 2335, Second Pad; 2381, First Wheel; 2382, Second Wheel; 2383, Absorbent Paper Tape; 2384, Third Gear; 2385, Fourth Gear; 2386, Drive Belt; 2387, Fifth Gear; 2388, Fourth Shaft; 241, Bellows; 242, Rack; 243, Sixth Gear; 244, Support Plate; 245, First Bevel Gear; 246, Second Bevel Gear; 247, Third Bevel Gear; 248, Fourth Bevel Gear; 249, Indicator Plate; 261, First L-Shaped Plate; 262, First Fixing Plate; 263, Third Spring; 264, Metal Block; 265, Second L-Shaped Plate; 266, Second Fixing Plate; 267, Fourth Spring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0018] Example: Figures 1-8 As shown, the present invention provides a technical solution in which the GIS switch housing includes a heat dissipation housing 1, a base plate 7 is installed at one end of the heat dissipation housing 1, an inner housing 2 is installed inside the heat dissipation housing 1, one end of the inner housing 2 is installed on the base plate 7, a first tube 3 is installed on one side of the inner housing 2, a first flange 4 is installed at one end of the first tube 3, a second tube 5 is installed on the other side of the inner housing 2, a second flange 6 is installed at one end of the second tube 5, a third tube is installed between the first tube 3 and the second tube 5, the third tube is installed on the inner housing 2, and a third flange 8 is installed at one end of the third tube.

[0019] The heat dissipation housing 1 includes an outer shell 11 and an inner shell 2 installed inside the outer shell 11. A first sealing plate 12 is installed at one end of the outer shell 11, and a second sealing plate 18 is installed at the other end of the outer shell 11. The second sealing plate 18 is installed on the base plate 7. The first sealing plate 12 is provided with heat dissipation holes. A spiral groove 13 is provided on the inner wall of the outer shell 11. A cold air hole 14 is provided on the outer shell 11. A liquid storage box 15 is installed on the inner wall of the outer shell 11. A heat dissipation pipe 16 is installed at one end of the liquid storage box 15. The liquid storage box 15 is made of thermally conductive material and is filled with diffusion liquid. A condenser pipe 17 is installed on the heat dissipation pipe 16. A return pipe is installed at one end of the condenser pipe 17. The return pipe is installed on the liquid storage box 15. The condenser pipe 17 is located on one side of the cold air hole 14. The position of the condenser pipe 17 on the heat dissipation pipe 16 is higher than its position on the return pipe.

[0020] When the components inside the GIS switch housing heat up, the components near the heat dissipation pipe 16 conduct the heat to the liquid storage box 15. The diffuser in the liquid storage box 15 absorbs heat and vaporizes, instantly carrying away a large amount of latent heat, effectively reducing the surface temperature of the components and preventing further heat accumulation. The vaporized diffuser enters the heat dissipation pipe 16 and then enters the condenser pipe 17. The hot air in other places rises and forms a vortex when passing through the spiral groove 13, and is discharged from the heat exhaust hole. A negative pressure zone is formed at the cold air hole 14 to draw in cold air, which cools the vapor in the condenser pipe 17 and causes the vapor to quickly condense back into liquid. The liquid diffuser flows from the condenser pipe 17 to the return pipe and finally flows back to the liquid storage box 15, continuously forming a stable heat dissipation cycle.

[0021] The inner shell 2 includes a protective shell 21, one end of which is mounted on the base plate 7. An observation port 25 is provided on the protective shell 21, and a transparent cover is installed on the outside of the observation port 25. A filter plate 22 is installed inside the first tube 3, and a dehumidification device 23 is installed on the filter plate 22. A sealing self-test device 24 is installed inside the protective shell 21, and an alarm device 26 is installed on one end of the sealing self-test device 24. The sealing self-test device 24 is located on one side of the observation port 25.

[0022] The dehumidification device 23 includes a first rotating shaft, an mounting plate installed on the inner wall of the protective shell 21, the first rotating shaft rotating on the mounting plate, a first rocker arm 231 rotatably connected to the first rotating shaft, a first gear 232 installed on one side of the first rocker arm 231, a ratchet device 233 installed on one side of the first rocker arm 231, a connecting rod 234 rotatably connected to one end of the first rocker arm 231, a second rocker arm 235 rotatably connected to one end of the connecting rod 234, a second rotating shaft 236 and a fixing block 237 installed on one side of the filter plate 22, the second rocker arm 235 rotating on the second rotating shaft 236, a first spring installed between the second rocker arm 235 and the fixing block 237, a liquid suction device 238 installed on the first rotating shaft, and the second rocker arm 235 located above the liquid suction device 238.

[0023] The ratchet device 233 includes a second gear 2331, a third rotating shaft mounted on the second gear 2331, the third rotating shaft rotating on the mounting plate, the second gear 2331 meshing with the first gear 232, a third rocker arm 2332 mounted on the third rotating shaft, a first pawl 2334 rotatably connected to one end of the third rocker arm 2332, a second pawl 2335 rotatably connected to the other end of the third rocker arm 2332, a second spring installed between the first pawl 2334 and the second pawl 2335, a ratchet 2333 mounted on the first rotating shaft, the first pawl 2334 engaging with the ratchet 2333, and the second pawl 2335 engaging with the ratchet 2333.

[0024] The liquid absorption device 238 includes a fourth rotating shaft 2388, which is mounted on the filter plate 22. A first rotating wheel 2381 and a third gear 2384 are rotatably connected to the fourth rotating shaft 2388. A fifth rotating shaft is mounted on the filter plate 22, which is rotatably connected to a second rotating wheel 2382 and a fourth gear 2385. A moisture-absorbing paper belt 2383 is mounted on the first rotating wheel 2381 and the second rotating wheel 2382. The moisture-absorbing paper belt 2383 is located below the second rocker arm 235. A fifth gear 2387 is mounted on one end of the first rotating shaft. A drive belt 2386 is mounted on the third gear 2384, the fourth gear 2385, and the fifth gear 2387.

[0025] When humid gas enters the first tube 3, the absorbent paper strip 2383 located at the filter plate 22 absorbs the moisture in the gas. After the absorbent paper strip 2383 is fully saturated with moisture, the radially expanding absorbent paper strip 2383 pushes the second rocker arm 235 to rotate around the second rotating shaft 236. The second rocker arm 235 drives the connecting rod 234 to rotate, the connecting rod 234 drives the first rocker arm 231 to rotate around the first rotating shaft, the first rocker arm 231 drives the first gear 232 to rotate, the first gear 232 drives the second gear 2331 to rotate, the second gear 2331 drives the third rotating shaft to rotate, the third rotating shaft drives the third rocker arm 2332 to rotate around the third rotating shaft, the third rocker arm 2332 drives the first pawl 2334 to push the ratchet 2333 to rotate, and the second pawl 2334 drives the ratchet 2333 to rotate. 335 prevents ratchet 2333 from reversing. Ratchet 2333 drives the first rotating shaft to rotate, the first rotating shaft drives the fifth gear 2387 to rotate, the fifth gear 2387 drives the transmission belt 2386 to rotate, the transmission belt 2386 drives the fourth gear 2385 and the fifth gear 2387 to rotate, the fourth gear 2385 drives the first rotating wheel 2381 to rotate, the fifth gear 2387 drives the second rotating wheel 2382 to rotate, the first rotating wheel 2381 and the second rotating wheel 2382 drive the moisture-absorbing paper tape 2383 to rotate, rotating the next section of brand-new moisture-absorbing paper tape 2383 to the moisture-absorbing position, ensuring the dryness inside the GIS switch housing, greatly extending the equipment maintenance cycle, and effectively preventing risks such as short circuits, component corrosion or performance degradation caused by moisture intrusion.

[0026] The sealing self-testing device 24 includes a bellows 241. A through groove is provided on the inner wall of the protective shell 21, and the bellows 241 is installed within the through groove. A rack 242 is installed inside the bellows 241. A support plate 244 is installed on the inner wall of the protective shell 21. A tenth rotating shaft is rotatably connected to the support plate 244. A sixth gear 243 is installed at one end of the tenth rotating shaft, and the rack 242 and the sixth gear 243 mesh. A first support block and a first bevel gear 245 are installed on the tenth rotating shaft. The other end of the first support block is rotatably connected to the sixth rotating shaft. A second bevel gear 246 is installed at one end of the shaft, and the first bevel gear 245 and the second bevel gear 246 mesh. A third bevel gear 247 is installed at the other end of the sixth rotating shaft. A second support block is installed on the sixth rotating shaft. A seventh rotating shaft is rotatably connected to one end of the second support block. A fourth bevel gear 248 is installed at one end of the seventh rotating shaft, and the third bevel gear 247 and the fourth bevel gear 248 mesh. The seventh rotating shaft rotates on the inner wall of the protective shell 21. An indicator plate 249 is installed on the seventh rotating shaft, and the indicator plate 249 is installed on one side of the observation port 25.

[0027] The alarm device 26 includes an eighth rotating shaft, which is mounted on the inner wall of the protective shell 21. A first L-shaped plate 261 is rotatably connected to the eighth rotating shaft. A metal block 264 is mounted on one side of the first L-shaped plate 261. The metal block 264 is mounted on the inner wall of the protective shell 21. A ninth rotating shaft, a first fixing plate 262, and a second fixing plate 266 are mounted on the inner wall of the protective shell 21. A third spring 263 is installed between the first fixing plate 262 and the first L-shaped plate 261. A second L-shaped plate 265 is rotatably connected to the ninth rotating shaft. A fourth spring 267 is installed between the second fixing plate 266 and the second L-shaped plate 265.

[0028] When a leak occurs, the bellows 241 compresses and retracts. The bellows 241 drives the rack 242 to move away from the bellows 241. The rack 242 drives the sixth gear 243 to rotate. The sixth gear 243 drives the tenth shaft to rotate. The tenth shaft drives the first bevel gear 245 to rotate. The first bevel gear 245 drives the second bevel gear 246 to rotate. The second bevel gear 246 drives the sixth shaft to rotate. The sixth shaft drives the third bevel gear 247 to rotate. The third bevel gear 247 drives the fourth bevel gear 248 to rotate. The fourth bevel gear 248 drives the seventh shaft to rotate. The seventh shaft drives the indicator plate 249 to rotate. When the indicator plate 249 rotates to the bottom, the indicator plate 249 drives the first L-shaped plate 261 to rotate around the eighth shaft. The first L-shaped plate 261 strikes the metal block 264. The third spring 263 drives the first L-shaped plate 261 back to its initial position.

[0029] When the temperature inside the casing rises, the air pressure inside the casing increases, and the bellows 241 stretches. At this time, the indicator plate 249 will rotate to the other end. Personnel can observe the position of the indicator plate 249 through the observation port to know whether the current temperature is within the normal range. When the temperature inside the casing is too high, the bellows 241 stretches to its longest length. At this time, the indicator plate 249 rotates to the bottom of the other end. The indicator plate 249 drives the second L-shaped plate 265 to rotate around the ninth axis. The second L-shaped plate 265 strikes the metal block 264, and the fourth spring 267 drives the second L-shaped plate 265 back to the initial position. This facilitates timely handling of gas leaks and excessive temperatures, ensuring the safety of equipment and personnel.

[0030] Working principle of the invention: When the components inside the GIS switch housing heat up, the components near the heat dissipation pipe 16 conduct the heat to the liquid storage box 15. The diffuser in the liquid storage box 15 absorbs heat and vaporizes, instantly carrying away a large amount of latent heat, effectively reducing the surface temperature of the components and preventing further heat accumulation. The vaporized diffuser enters the heat dissipation pipe 16 and then enters the condenser pipe 17. The hot air in other places rises and forms a vortex when passing through the spiral groove 13, and is discharged from the heat exhaust hole. A negative pressure zone is formed at the cold air hole 14 to draw in cold air, which cools the vapor in the condenser pipe 17 and causes the vapor to quickly condense back into liquid. The liquid diffuser flows from the condenser pipe 17 to the return pipe and finally flows back to the liquid storage box 15, continuously forming a stable heat dissipation cycle.

[0031] When humid gas enters the first tube 3, the absorbent paper strip 2383 located at the filter plate 22 absorbs the moisture in the gas. After the absorbent paper strip 2383 is fully saturated with moisture, the radially expanding absorbent paper strip 2383 pushes the second rocker arm 235 to rotate around the second rotating shaft 236. The second rocker arm 235 drives the connecting rod 234 to rotate, the connecting rod 234 drives the first rocker arm 231 to rotate around the first rotating shaft, the first rocker arm 231 drives the first gear 232 to rotate, the first gear 232 drives the second gear 2331 to rotate, the second gear 2331 drives the third rotating shaft to rotate, the third rotating shaft drives the third rocker arm 2332 to rotate around the third rotating shaft, the third rocker arm 2332 drives the first pawl 2334 to push the ratchet 2333 to rotate, and the second pawl 2334 drives the ratchet 2333 to rotate. 335 prevents ratchet 2333 from reversing. Ratchet 2333 drives the first rotating shaft to rotate, the first rotating shaft drives the fifth gear 2387 to rotate, the fifth gear 2387 drives the transmission belt 2386 to rotate, the transmission belt 2386 drives the fourth gear 2385 and the fifth gear 2387 to rotate, the fourth gear 2385 drives the first rotating wheel 2381 to rotate, the fifth gear 2387 drives the second rotating wheel 2382 to rotate, the first rotating wheel 2381 and the second rotating wheel 2382 drive the moisture-absorbing paper tape 2383 to rotate, rotating the next section of brand-new moisture-absorbing paper tape 2383 to the moisture-absorbing position, ensuring the dryness inside the GIS switch housing, greatly extending the equipment maintenance cycle, and effectively preventing risks such as short circuits, component corrosion or performance degradation caused by moisture intrusion.

[0032] When a leak occurs, the bellows 241 compresses and retracts. The bellows 241 drives the rack 242 to move away from the bellows 241. The rack 242 drives the sixth gear 243 to rotate. The sixth gear 243 drives the tenth shaft to rotate. The tenth shaft drives the first bevel gear 245 to rotate. The first bevel gear 245 drives the second bevel gear 246 to rotate. The second bevel gear 246 drives the sixth shaft to rotate. The sixth shaft drives the third bevel gear 247 to rotate. The third bevel gear 247 drives the fourth bevel gear 248 to rotate. The fourth bevel gear 248 drives the seventh shaft to rotate. The seventh shaft drives the indicator plate 249 to rotate. When the indicator plate 249 rotates to the bottom, the indicator plate 249 drives the first L-shaped plate 261 to rotate around the eighth shaft. The first L-shaped plate 261 strikes the metal block 264. The third spring 263 drives the first L-shaped plate 261 back to its initial position.

[0033] When the temperature inside the casing rises, the air pressure inside the casing increases, and the bellows 241 stretches. At this time, the indicator plate 249 will rotate to the other end. Personnel can observe the position of the indicator plate 249 through the observation port to know whether the current temperature is within the normal range. When the temperature inside the casing is too high, the bellows 241 stretches to its longest length. At this time, the indicator plate 249 rotates to the bottom of the other end. The indicator plate 249 drives the second L-shaped plate 265 to rotate around the ninth axis. The second L-shaped plate 265 strikes the metal block 264, and the fourth spring 267 drives the second L-shaped plate 265 back to the initial position. This facilitates timely handling of gas leaks and excessive temperatures, ensuring the safety of equipment and personnel.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A GIS switch housing with a sealed self-test function, characterized in that: The GIS switch housing includes a heat dissipation housing (1), a base plate (7) is installed at one end of the heat dissipation housing (1), an inner housing (2) is installed inside the heat dissipation housing (1), one end of the inner housing (2) is installed on the base plate (7), a first pipe (3) is installed on one side of the inner housing (2), a first flange (4) is installed at one end of the first pipe (3), a second pipe (5) is installed on the other side of the inner housing (2), a second flange (6) is installed at one end of the second pipe (5), a third pipe is installed between the first pipe (3) and the second pipe (5), the third pipe is installed on the inner housing (2), and a third flange (8) is installed at one end of the third pipe. The inner shell (2) includes a protective shell (21), one end of which is mounted on the base plate (7). An observation port (25) is provided on the protective shell (21), and a transparent cover is installed on the outside of the observation port (25). A filter plate (22) is installed inside the first tube (3), and a dehumidification device (23) is installed on the filter plate (22). A sealing self-test device (24) is installed inside the protective shell (21), and an alarm device (26) is installed at one end of the sealing self-test device (24). The sealing self-test device (24) is located on one side of the observation port (25). The dehumidification device (23) includes a first rotating shaft, an mounting plate is installed on the inner wall of the protective shell (21), the first rotating shaft rotates on the mounting plate, a first rocker arm (231) is rotatably connected to the first rotating shaft, a first gear (232) is installed on one side of the first rocker arm (231), a ratchet device (233) is installed on one side of the first rocker arm (231), a connecting rod (234) is rotatably connected to one end of the first rocker arm (231), a second rocker arm (235) is rotatably connected to one end of the connecting rod (234), a second rotating shaft (236) and a fixing block (237) are installed on one side of the filter plate (22), the second rocker arm (235) rotates on the second rotating shaft (236), a first spring is installed between the second rocker arm (235) and the fixing block (237), a liquid suction device (238) is installed on the first rotating shaft, and the second rocker arm (235) is located above the liquid suction device (238).

2. A GIS switch housing with a sealing self-test function according to claim 1, characterized in that: The heat dissipation housing (1) includes an outer shell (11), an inner shell (2) installed inside the outer shell (11), a first sealing plate (12) installed at one end of the outer shell (11), a second sealing plate (18) installed at the other end of the outer shell (11), the second sealing plate (18) installed on the base plate (7), a heat dissipation hole provided on the first sealing plate (12), a spiral groove (13) provided on the inner wall of the outer shell (11), a cold air hole (14) provided on the outer shell (11), a liquid storage box (15) installed on the inner wall of the outer shell (11), a heat dissipation pipe (16) installed at one end of the liquid storage box (15), a condenser pipe (17) installed on the heat dissipation pipe (16), a return pipe installed at one end of the condenser pipe (17), and one end of the return pipe installed on the liquid storage box (15). The condenser pipe (17) is located on one side of the cold air hole (14).

3. A GIS switch housing with a sealing self-test function according to claim 2, characterized in that: The ratchet device (233) includes a second gear (2331), on which a third rotating shaft is mounted. The third rotating shaft rotates on a mounting plate. The second gear (2331) meshes with a first gear (232). A third rocker arm (2332) is mounted on the third rotating shaft. One end of the third rocker arm (2332) is rotatably connected to a first pawl (2334), and the other end of the third rocker arm (2332) is rotatably connected to a second pawl (2335). A second spring is installed between the first pawl (2334) and the second pawl (2335). A ratchet wheel (2333) is mounted on the first rotating shaft. The first pawl (2334) and the ratchet wheel (2333) cooperate with each other, and the second pawl (2335) and the ratchet wheel (2333) cooperate with each other.

4. A GIS switch housing with a sealing self-test function according to claim 3, characterized in that: The liquid absorption device (238) includes a fourth rotating shaft (2388), which is mounted on a filter plate (22). A first rotating wheel (2381) and a third gear (2384) are rotatably connected on the fourth rotating shaft (2388). A fifth rotating shaft is mounted on the filter plate (22), which is rotatably connected to a second rotating wheel (2382) and a fourth gear (2385). A moisture-absorbing paper tape (2383) is mounted on the first rotating wheel (2381) and the second rotating wheel (2382). The moisture-absorbing paper tape (2383) is located below the second rocker arm (235). A fifth gear (2387) is mounted on one end of the first rotating shaft. A transmission belt (2386) is mounted on the third gear (2384), the fourth gear (2385), and the fifth gear (2387).

5. A GIS switch housing with a sealing self-test function according to claim 4, characterized in that: The sealing self-testing device (24) includes a bellows (241). A through groove is provided on the inner wall of the protective shell (21), and the bellows (241) is installed in the through groove. A rack (242) is installed in the bellows (241). A support plate (244) is installed on the inner wall of the protective shell (21). A tenth rotating shaft is rotatably connected to the support plate (244). A sixth gear (243) is installed at one end of the tenth rotating shaft. The rack (242) and the sixth gear (243) mesh. A first support block and a first bevel gear (245) are installed on the tenth rotating shaft. The other end of the first support block is rotatably connected to the sixth rotating shaft. A second bevel gear (246) is installed at one end of the sixth rotating shaft, and the first bevel gear (245) and the second bevel gear (246) mesh. A third bevel gear (247) is installed at the other end of the sixth rotating shaft. A second support block is installed on the sixth rotating shaft. A seventh rotating shaft is rotatably connected to one end of the second support block. A fourth bevel gear (248) is installed at one end of the seventh rotating shaft. The third bevel gear (247) and the fourth bevel gear (248) mesh. The seventh rotating shaft rotates on the inner wall of the protective shell (21). An indicator plate (249) is installed on the seventh rotating shaft. The indicator plate (249) is installed on one side of the observation port (25).

6. A GIS switch housing with a sealing self-test function according to claim 5, characterized in that: The alarm device (26) includes an eighth rotating shaft, which is mounted on the inner wall of the protective shell (21). A first L-shaped plate (261) is rotatably connected to the eighth rotating shaft. A metal block (264) is mounted on one side of the first L-shaped plate (261). The metal block (264) is mounted on the inner wall of the protective shell (21). A ninth rotating shaft, a first fixing plate (262), and a second fixing plate (266) are mounted on the inner wall of the protective shell (21). A third spring (263) is installed between the first fixing plate (262) and the first L-shaped plate (261). A second L-shaped plate (265) is rotatably connected to the ninth rotating shaft. A fourth spring (267) is installed between the second fixing plate (266) and the second L-shaped plate (265).

7. A GIS switch housing with a sealing self-test function according to claim 2, characterized in that: The position of the condenser tube (17) on the heat dissipation tube (16) is higher than its position on the return tube.

8. A GIS switch housing with a sealing self-test function according to claim 2, characterized in that: The liquid storage box (15) is made of thermally conductive material and is filled with a diffusion liquid.

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