A super-high-speed environmentally friendly gas-insulated AC metal-enclosed switch

Abstract

The present invention relates to the technical field of gas-insulated metal-enclosed switchgear, and discloses an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch, which includes a mounting base. A metal-enclosed switch column is fixedly connected to the upper side of the mounting base, and a detection tank is fixedly arranged at the bottom side of the metal-enclosed switch column. In the present invention, the movement position of the piston is used to sense the pressure change inside the metal-enclosed switch column. The movement of the moving tube is controlled by a sensing structure to achieve the replenishment of the gas inside the metal-enclosed switch column. The intensity of the air pressure inside the metal-enclosed switch column is automatically sensed through the cooperation between the piston and the sensing mechanism, and then the gas inside the metal-enclosed switch column is automatically replenished, so that the inside of the metal-enclosed switch column maintains a sufficient amount of perfluoroisobutyronitrile insulating gas. When the gas inside becomes less, the gas inside is automatically replenished, thereby improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-insulated metal-enclosed switches, and in particular to an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch. Background Art

[0002] An ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switchgear is a metal-enclosed switchgear and control equipment that uses a gas above atmospheric pressure as an insulating medium, and is composed of a circuit breaker, a disconnector, an earthing switch, an instrument transformer, a lightning arrester, a busbar, a connector, an outgoing terminal, etc. All these devices or components are completely enclosed in a metal-earthed enclosure.

[0003] Existing ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switchgears basically have the advantages of being structurally compact, having a small floor area, high reliability, flexible configuration, easy installation, strong safety, strong environmental adaptability, and very little maintenance work, and can meet the usage requirements of switch control during high-voltage power transmission. However, for existing gas-insulated metal-enclosed switchgears, perfluoroisobutyronitrile gas is usually used. Perfluoroisobutyronitrile is a new type of environmentally friendly insulating gas, and its insulating performance is twice that of sulfur hexafluoride. On the one hand, during the long-term operation process, the internal high-pressure perfluoroisobutyronitrile insulating gas is likely to leak out. The existing technology usually directly detects the internal pressure through a pressure detection gauge and then manually fills high-pressure gas into it, which requires manual detection and has a low degree of automation. On the other hand, when the gas leaks, it is easy to mix with moving water vapor, and the internal environment is damaged. The existing technology usually completely discharges the internal gas after a period of time and then refills perfluoroisobutyronitrile insulating gas, which delays production. Therefore, we propose an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch. Summary of the Invention

[0004] The present invention mainly solves the technical problems existing in the above-mentioned prior art, and provides an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch.

[0005] To achieve the above object, the present invention adopts the following technical solution. A super-high-speed environmental protection gas-insulated AC metal-enclosed switch includes an installation base. A metal-enclosed switch column is fixedly connected to the upper side of the installation base. A detection tank is fixedly arranged at the bottom side of the metal-enclosed switch column. A first guiding pipe is fixedly connected to the upper end of the detection tank and extends into the interior of the metal-enclosed switch column. A first movable cavity and a second movable cavity are formed inside the detection tank. The second movable cavity is arranged below the first movable cavity. A movable piston is arranged inside the detection tank. A sensing structure connected to the piston is arranged inside the second movable cavity. An installation box is fixedly arranged at the bottom side of the metal-enclosed switch column. A second guiding pipe is fixedly connected to the upper end of the installation box and extends into the interior of the metal-enclosed switch column. A movable hole is formed at the bottom side of the installation box. A movable moving pipe is movably arranged inside the movable hole. Two first air-permeable cavities are symmetrically formed on the side surface of the moving pipe. A first blocking structure is arranged above the first air-permeable cavity inside the moving pipe. An adjusting structure is arranged below the blocking structure inside the moving pipe. An air inlet hole is formed at the bottom side of the installation box. A first gas injection pipe is fixedly connected to the position corresponding to the air inlet hole on the outer bottom side of the installation box. An air inlet structure is arranged at the position corresponding to the air inlet hole on the inner bottom side of the installation box. A second blocking structure is arranged at the position corresponding to the air inlet mechanism on the side surface of the moving pipe. The upper end of the first connecting block is fixedly connected to a second connecting spring, and the lower end of the first connecting block is fixedly connected to a first connecting spring.

[0006] Preferably, the sensing structure includes a connecting rod fixedly connected to the bottom side of the piston. The connecting rod extends downward into the interior of the second movable cavity. A first connecting block is fixedly connected to the bottom side of the connecting rod corresponding to the interior of the second movable cavity. A second extrusion contactor is fixedly connected to the upper end of the interior of the second movable cavity corresponding to the wall surface of the detection tank. A first extrusion contactor is fixedly connected to the lower end of the interior of the second movable cavity corresponding to the wall surface of the detection tank. An extrusion block is movably arranged above the first extrusion contactor inside the second movable cavity.

[0007] Preferably, a sliding groove is formed on the wall surface of the second movable cavity corresponding to the piston at the bottom side. The extrusion block is clamped inside the sliding groove. A third movable cavity is formed inside the connecting rod near the bottom side. A movable rod is movably installed inside the third movable cavity. The movable rod penetrates downward through the bottom side of the connecting rod and the side surface of the first connecting block and is fixedly connected to the upper end of the extrusion block.

[0008] Preferably, a fourth movable cavity is formed on the side surface of the sliding groove corresponding to the wall surface of the detection tank. A limiting groove is formed on the side surface of the extrusion block. A movable clamping block is movably installed inside the third connecting spring. A third connecting spring is fixedly connected to the side surface of the movable clamping block. The end of the third connecting spring far from the movable clamping block is fixedly connected to the side surface of the fourth movable cavity. A third extrusion contactor is fixedly connected to the bottom side of the sliding groove corresponding to the lower side of the extrusion block.

[0009] Preferably, a first installation cavity is formed inside the installation box. A first electromagnetic push rod is fixedly connected to the upper side inside the first installation cavity. The output end of the first electromagnetic push rod is fixedly connected to a second connecting block, and the second connecting block is fixedly connected to the side surface of the moving pipe. A second electromagnetic push rod is fixedly connected to the lower side inside the first installation cavity. The output end of the second electromagnetic push rod is fixedly connected to a third connecting block, and the third connecting block is fixedly connected to the side surface of the moving pipe. The first electromagnetic push rod is electrically connected to the second extrusion contactor, and the second electromagnetic push rod is electrically connected to the first extrusion contactor.

[0010] Preferably, the first plugging structure includes a plug block movably installed inside the moving pipe. The upper end of the plug block is fixedly connected to a fourth connecting spring, and the end of the fourth connecting spring away from the plug block is fixedly connected to the upper end inside the moving pipe.

[0011] Preferably, the adjusting structure includes an inflation pipe movably installed inside the moving pipe. Second ventilation cavities are correspondingly and equidistantly formed in the side surface of the inflation pipe, and a support box is movably installed inside the inflation pipe.

[0012] Preferably, a second installation cavity is formed in the bottom side of the inflation pipe. A detachable telescopic cylinder is arranged inside the second installation cavity. The output end of the telescopic cylinder is fixedly connected to a movable column, and the upper side of the movable column is fixedly connected to the bottom side of the support box.

[0013] Preferably, the bottom side of the telescopic cylinder is fixedly connected to a mounting frame. A second fixing block is fixedly connected to the side surface of the mounting frame. A first fixing block is fixedly connected to the side surface of the inflation pipe corresponding to the position of the second fixing block. The first fixing block and the second fixing block are fixedly connected through a tightening threaded part arranged inside the first fixing block and the second fixing block.

[0014] Preferably, the air inlet structure includes a second injection pipe fixedly connected to the bottom side inside the installation box corresponding to the air inlet hole. The cross section of the second injection pipe is a right trapezoidal ring. A sealing cavity is formed in the outer inclined surface of the second injection pipe, and a sealing ring is arranged inside the sealing cavity. The second plugging structure includes a fourth connecting block fixedly connected to the side surface of the moving pipe. An adaptation cavity is formed in the bottom side of the fourth connecting block corresponding to the position of the sealing ring. Beneficial effects

[0015] The present invention provides an ultra-high-speed environmental protection gas-insulated AC metal-enclosed switch. The following beneficial effects are achieved:

[0016] (1) The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch senses the pressure change inside the metal-enclosed switch column through the moving position of the piston, controls the movement of the moving pipe through the sensing structure to achieve the replenishment of the gas inside the metal-enclosed switch column, automatically senses the intensity of the air pressure inside the metal-enclosed switch column through the cooperation between the piston and the sensing mechanism, and then automatically replenishes the gas inside the metal-enclosed switch column, so that the inside of the metal-enclosed switch column maintains an adequate amount of perfluoroisobutyronitrile insulating gas. When the gas inside becomes less, it automatically replenishes the gas inside, thereby improving work efficiency.

[0017] (2) When it is necessary to replace the desiccant inside the support box, the ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch maintains the seal of the position of the first ventilation cavity through the cooperation between the support box and the first sealing structure when replacing the desiccant inside the support box. When it is necessary to relieve the pressure inside the metal-enclosed switch column, by moving the support box upward, the inside of the installation box is connected to the inside of the charging pipe through the second ventilation cavity to discharge the gas. By placing the desiccant inside the support box, the moisture inside the metal-enclosed switch column is adsorbed, thereby comprehensively regulating the environment inside the metal-enclosed switch column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0019] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the partial structure of the detection tank of the present invention;

[0022] Figure 3 is a cross-sectional view of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at position A in the present invention;

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at position B in the present invention;

[0025] Figure 6 Cross-sectional view of the moving pipe of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at position C in the present invention.

[0027] Legend description:

[0028] 111. Installation base; 112. Metal enclosed switch column; 211. Detection tank; 212. First guiding pipe; 213. First movable cavity; 214. Second movable cavity; 221. Piston; 222. Connecting rod; 223. First connecting block; 224. First connecting spring; 225. First extrusion contactor; 226. Second connecting spring; 227. Second extrusion contactor; 228. Third movable cavity; 229. Movable rod; 231. Sliding groove; 232. Extrusion block; 233. Third extrusion contactor; 234. Limiting groove; 235. Fourth movable cavity; 236. Movable clamping block; 237. Third connecting spring; 411. Installation box; 412. Second guiding pipe; 413. Air inlet hole; 414. Movable hole; 421. First electromagnetic push rod; 422. Second connecting block; 423. Second electromagnetic push rod; 424. Third connecting block; 425. Moving pipe; 426. First breathable cavity; 427. First installation cavity; 431. Plug block; 432. Fourth connecting spring; 433. Inflating pipe; 434. Support box; 435. Movable column; 436. Second breathable cavity; 441. Second installation cavity; 442. Installation frame; 443. Telescopic cylinder; 451. First fixing block; 452. Second fixing block; 453. Tightening threaded part; 461. First gas injection pipe; 511. Second gas injection pipe; 512. Sealing cavity; 513. Sealing ring; 514. Fourth connecting block; 515. Adaptation cavity. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1 - 7As shown in the figure, a super-high-speed environmentally friendly gas-insulated AC metal-enclosed switch includes an installation base 111. A metal-enclosed switch column 112 is fixedly connected to the upper side of the installation base 111. A detection tank 211 is fixedly arranged at the bottom side of the metal-enclosed switch column 112. A first guiding pipe 212 is fixedly connected to the upper end of the detection tank 211. The first guiding pipe 212 extends into the interior of the metal-enclosed switch column 112. A first movable cavity 213 and a second movable cavity 214 are formed inside the detection tank 211. The second movable cavity 214 is arranged below the first movable cavity 213. A movable piston 221 is arranged inside the detection tank 211. A sensing structure connected to the piston 221 is arranged inside the second movable cavity 214. An installation box 411 is fixedly arranged at the bottom side of the metal-enclosed switch column 112. A second guiding pipe 412 is fixedly connected to the upper end of the installation box 411. The second guiding pipe 412 extends into the interior of the metal-enclosed switch column 112. An activity hole 414 is formed at the bottom side of the installation box 411. A movable moving pipe 425 is movably arranged inside the activity hole 414. Two first air-permeable cavities 426 are symmetrically formed on the side surface of the moving pipe 425. A first blocking structure is arranged above the first air-permeable cavity 426 inside the moving pipe 425. An adjusting structure is arranged below the blocking structure inside the moving pipe 425. The adjusting structure includes an inflation pipe 433 movably installed inside the moving pipe 425. Second air-permeable cavities 436 are equidistantly formed on the side surface of the inflation pipe 433. A support box 434 is movably installed inside the inflation pipe 433. A desiccant is placed inside the support box 434. The support box 434 is moved to the position of the second air-permeable cavity 436. The moisture inside the metal-enclosed switch column 112 is adsorbed by the desiccant placed inside the support box 434. A second installation cavity 441 is formed at the bottom side of the inflation pipe 433. A detachable telescopic cylinder 443 is arranged inside the second installation cavity 441. The output end of the telescopic cylinder 443 is fixedly connected to a movable column 435. The upper side of the movable column 435 is fixedly connected to the bottom side of the support box 434. When the inflation pipe 433 is pulled out from the inside of the moving pipe 425, when the support box 434 moves downward, a fourth connecting spring 432 drives a plug 431 to move downward to block the position of the first air-permeable cavity 426. When the internal pressure of the metal-enclosed switch column 112 is too high, the telescopic cylinder 443 is started. The telescopic cylinder 443 drives the movable column 435 to move upward. The movable column 435 drives the support box 434 to move upward. The support box 434 moves above the second air-permeable cavity 436 so that the inflation pipe 433 is communicated with the inside of the installation box 411 through the second air-permeable cavity 436. The gas inside the installation box 411 enters the inside of the inflation pipe 433 through the second air-permeable cavity 436 and is discharged outward. The bottom side of the telescopic cylinder 443 is fixedly connected to an installation frame 442. A second fixing block 452 is fixedly connected to the side surface of the installation frame 442. A first fixing block 451 is fixedly connected to the side surface of the inflation pipe 433 corresponding to the position of the second fixing block 452.The first fixing block 451 and the second fixing block 452 are fixedly connected by a fastening threaded member 453 arranged inside the first fixing block 451 and the second fixing block 452. An air inlet hole 413 is formed on the bottom side of the installation box 411. A first injection pipe 461 is fixedly connected to the position corresponding to the air inlet hole 413 on the outer bottom side of the installation box 411. An air inlet structure is arranged at the position corresponding to the air inlet hole 413 on the inner bottom side of the installation box 411. The air inlet structure includes a second injection pipe 511 fixedly connected to the position corresponding to the air inlet hole 413 on the inner bottom side of the installation box 411. The cross-section of the second injection pipe 511 is a right-angled trapezoidal ring. A sealing cavity 512 is formed on the outer inclined surface of the second injection pipe 511. A sealing ring 513 is arranged inside the sealing cavity 512. The second blocking structure includes a fourth connecting block 514 fixedly connected to the side surface of the moving pipe 425. An adaptation cavity 515 is formed on the bottom side of the fourth connecting block 514 corresponding to the position of the sealing ring 513. A second blocking structure is arranged on the side surface of the moving pipe 425 corresponding to the air inlet mechanism. The upper end of the first connecting block 223 is fixedly connected with a second connecting spring 226, and the lower end of the first connecting block 223 is fixedly connected with a first connecting spring 224. The space inside the detection tank 211 is separated by a piston 221. The space above the piston 221 is in communication with the metal-sealed switch cylinder 112. Therefore, the pressure in the space above the detection tank 211 is the same as the pressure inside the metal-sealed switch cylinder 112. When the gas inside the metal-sealed switch cylinder 112 leaks, the pressure above the piston 221 becomes smaller, and the piston 221 starts to move upward. After the piston 221 moves upward for a certain distance, the moving pipe 425 is driven to move through a sensing structure. The moving pipe 425 drives the second blocking structure to separate from the air inlet structure, so that gas can enter the inside of the installation box 411. The gas then enters the inside of the metal-sealed switch cylinder 112 through the second guiding pipe 412 to supplement the gas inside the metal-sealed switch cylinder 112. When the pressure inside the metal-sealed switch cylinder 112 becomes larger, it will squeeze the piston 221 to move downward until it reaches a proper position. Then the piston 221 drives the moving pipe 425 to move downward through a transmission structure to block the air inlet structure through the second blocking structure and stop the gas transmission operation of the air inlet structure. When the second blocking structure blocks the air inlet mechanism, the water vapor inside the wall-mounted installation box 411 enters the inside of the air inlet structure. When in use, the desiccant is sent into the inside of the metal-sealed switch cylinder 112 through an adjustment structure to dry the water vapor inside the metal-sealed switch cylinder 112. When the adjustment structure is taken out to replace the desiccant, the first blocking structure blocks the position of the first ventilation cavity 426 to avoid gas leakage. When the air pressure inside the metal-sealed switch cylinder 112 is too high, the gas inside the metal-sealed switch cylinder 112 can be depressurized by moving the adjustment structure.,

[0031] The sensing structure includes a connecting rod 222 fixedly connected to the bottom side of the piston 221. The connecting rod 222 extends downward into the interior of the second moving chamber 214. A first connecting block 223 is fixedly connected to the bottom side of the connecting rod 222 corresponding to the interior of the second moving chamber 214. A second extrusion contactor 227 is fixedly connected to the upper end of the interior of the second moving chamber 214 corresponding to the wall surface of the detection tank 211. A first extrusion contactor 225 is fixedly connected to the lower end of the interior of the second moving chamber 214 corresponding to the wall surface of the detection tank 211. An extrusion block 232 is movably arranged above the first extrusion contactor 225 in the interior of the second moving chamber 214. When the air pressure inside the metal-sealed switch cylinder 112 changes, the position of the piston 221 also changes accordingly. When the first connecting block 223 moves upward and is about to contact the second extrusion contactor 227, the first connecting block 223 first drives the extrusion block 232 to move upward, and the extrusion block 232 separates from the first extrusion contactor 225. The force applied to the moving tube 425 is released through the first extrusion contactor 225. Subsequently, the first connecting block 223 moves upward to contact the second extrusion contactor 227, causing the moving tube 425 to move upward and simultaneously allowing gas to be injected into the installation box 411 through the intake structure. When the gas pressure inside the metal-sealed switch cylinder 112 increases, it squeezes the piston 221 to move downward. The piston 221 drives the first connecting block 223 to move downward. The first connecting block 223 squeezes the extrusion block 232 to move downward, and the extrusion block 232 squeezes the first extrusion contactor 225 to cause the moving tube 425 to move downward and simultaneously end the intake, thus completing the operation of supplementing the gas inside the metal-sealed switch cylinder 112. A sliding groove 231 is provided on the bottom side of the interior of the second moving chamber 214 corresponding to the wall surface of the piston 221. The extrusion block 232 is clamped inside the sliding groove 231. A third moving chamber 228 is provided near the bottom side inside the connecting rod 222. A movable rod 229 is movably installed inside the third moving chamber 228. The movable rod 229 extends downward through the bottom side of the connecting rod 222 and the side surface of the first connecting block 223 and is fixedly connected to the upper end of the extrusion block 232. After the first connecting block 223 and the extrusion block 232 are squeezed, the extrusion block 232 always contacts the first extrusion contactor 225. Before the first connecting block 223 is about to contact the second extrusion contactor 227, the first connecting block 223 drives the extrusion block 232 to move downward through the movable rod 229 to release the contact with the first extrusion contactor 225 and then contact the second extrusion contactor 227. A fourth moving chamber 235 is provided on the side surface of the sliding groove 231 corresponding to the wall surface of the detection tank 211. A limiting groove 234 is provided on the side surface of the extrusion block 232. A movable clamping block 236 is movably installed inside the third connecting spring 237. A third connecting spring 237 is fixedly connected to the side surface of the movable clamping block 236. One end of the third connecting spring 237 away from the movable clamping block 236 is fixedly connected to the side surface of the fourth moving chamber 235.A third extrusion contactor 233 is fixedly connected to the bottom side of the sliding groove 231 corresponding to the lower side of the extrusion block 232. The movable clamping block 236 and the third connecting spring 237 enter the inside of the limiting groove 234 to limit the movement of the extrusion block 232. When the extrusion block 232 presses down on the first extrusion contactor 225, it will also press on the third extrusion contactor 233. The ventilation process of the air intake structure is realized by pressing on the third extrusion contactor 233.,

[0032] A first installation cavity 427 is provided inside the installation box 411. A first electromagnetic push rod 421 is fixedly connected to the upper side inside the first installation cavity 427. The output end of the first electromagnetic push rod 421 is fixedly connected to a second connecting block 422. The second connecting block 422 is fixedly connected to the side surface of the moving pipe 425. A second electromagnetic push rod 423 is fixedly connected to the lower side inside the first installation cavity 427. The output end of the second electromagnetic push rod 423 is fixedly connected to a third connecting block 424. The third connecting block 424 is fixedly connected to the side surface of the moving pipe 425. The first electromagnetic push rod 421 is electrically connected to the second extrusion contactor 227, and the second electromagnetic push rod 423 is electrically connected to the first extrusion contactor 225. The first plugging structure includes a plug block 431 movably installed inside the moving pipe 425. The upper end of the plug block 431 is fixedly connected to a fourth connecting spring 432. The end of the fourth connecting spring 432 far from the plug block 431 is fixedly connected to the upper end inside the moving pipe 425.,

[0033] The working principle of the present invention:

[0034] During use, the space inside the detection tank 211 is separated by the piston 221. The space above the piston 221 is in communication with the metal-sealed switch cylinder 112. Therefore, the pressure in the space above the detection tank 211 is the same as the pressure inside the metal-sealed switch cylinder 112. When the gas inside the metal-sealed switch cylinder 112 leaks, the pressure above the piston 221 becomes smaller, and the piston 221 starts to move upward. After the piston 221 moves upward a certain distance, the moving tube 425 is moved through the sensing structure. The moving tube 425 drives the second sealing structure to separate from the air intake structure, allowing gas to enter the interior of the installation box 411. The gas then enters the interior of the metal-sealed switch cylinder 112 through the second guiding tube 412 to replenish the gas inside the metal-sealed switch cylinder 112. When the pressure inside the metal-sealed switch cylinder 112 increases, it squeezes the piston 221 to move downward until it reaches the appropriate position. Then, the piston 221 drives the moving tube 425 to move downward through the transmission structure to block the air intake structure with the second sealing structure and stop the gas transmission operation of the air intake structure. When the second sealing structure blocks the air intake mechanism, the water vapor inside the wall-mounted installation box 411 enters the interior of the air intake structure. During use, the desiccant is sent into the interior of the metal-sealed switch cylinder 112 through the adjustment structure to dry the water vapor inside the metal-sealed switch cylinder 112. When removing the adjustment structure to replace the desiccant, the position of the first ventilation cavity 426 is blocked by the first sealing structure to prevent gas leakage. When the air pressure inside the metal-sealed switch cylinder 112 is too high, the gas inside the metal-sealed switch cylinder 112 can be depressurized by moving the adjustment structure. When the air pressure inside the metal-sealed switch cylinder 112 changes, the position of the piston 221 also changes accordingly. When the first connecting block 223 moves upward and is about to be extruded to contact the second pressing contactor 227, the first connecting block 223 first drives the pressing block 232 to move upward, and the pressing block 232 separates from the first pressing contactor 225, releasing the force applied to the moving tube 425 through the first pressing contactor 225. Subsequently, the first connecting block 223 moves upward to contact the second pressing contactor 227, causing the moving tube 425 to move upward and allowing gas to be injected into the interior of the installation box 411 through the air intake structure simultaneously. When the gas pressure inside the metal-sealed switch cylinder 112 increases, it squeezes the piston 221 to move downward. The piston 221 drives the first connecting block 223 to move downward, and the first connecting block 223 squeezes the pressing block 232 to move downward. The pressing block 232 squeezes the first pressing contactor 225, causing the moving tube 425 to move downward and ending the air intake simultaneously to complete the operation of replenishing the gas inside the metal-sealed switch cylinder 112. After the first connecting block 223 and the pressing block 232 are squeezed, the pressing block 232 always remains in contact with the first pressing contactor 225.Before the first connection block 223 is about to contact the second extrusion contactor 227, the first connection block 223 drives the extrusion block 232 to move downward through the movable rod 229 to release the contact with the first extrusion contactor 225 and then contact the second extrusion contactor 227. The movable latch 236 and the third connection spring 237 enter the inside of the limit groove 234 to limit the movement of the extrusion block 232. While the extrusion block 232 presses downward on the first extrusion contactor 225, it also presses on the third extrusion contactor 233. By pressing on the third extrusion contactor 233, the ventilation process of the air intake structure is realized. Place the desiccant inside the support box 434, move the support box 434 to the position of the second ventilation cavity 436, and adsorb the moisture inside the metal-enclosed switch column 112 through the desiccant placed inside the support box 434. Pull out the charging pipe 433 from the inside of the movable pipe 425. When the support box 434 moves downward, the fourth connection spring 432 drives the plug 431 to move downward to block the position of the first ventilation cavity 426. When the internal pressure of the metal-enclosed switch column 112 is too high, start the telescopic cylinder 443. The telescopic cylinder 443 drives the movable column 435 to move upward, and the movable column 435 drives the support box 434 to move upward. The support box 434 moves above the second ventilation cavity 436 so that the charging pipe 433 is connected to the inside of the installation box 411 through the second ventilation cavity 436, and the gas inside the installation box 411 enters the inside of the charging pipe 433 through the second ventilation cavity 436 and is discharged outward.,

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A super-high-speed environmental protection gas-insulated AC metal-enclosed switch, comprising an installation base (111), a metal-enclosed switch column (112) fixedly connected to the upper side of the installation base (111), a detection tank (211) fixedly arranged at the bottom side of the metal-enclosed switch column (112), a first guiding pipe (212) fixedly connected to the upper end of the detection tank (211), the first guiding pipe (212) extending into the interior of the metal-enclosed switch column (112), characterized in that: The interior of the detection tank (211) is provided with a first movable cavity (213) and a second movable cavity (214). The second movable cavity (214) is arranged below the first movable cavity (213). A movable piston (221) is arranged inside the detection tank (211). A sensing structure connected to the piston (221) is arranged inside the second movable cavity (214). An installation box (411) is fixedly arranged at the bottom side of the metal-closed switch column body (112). The upper end of the installation box (411) is fixedly connected to a second guiding pipe (412). The second guiding pipe (412) extends into the interior of the metal-closed switch column body (112). A movable hole (414) is opened at the bottom side of the installation box (411). A movable moving pipe (425) is movably arranged inside the movable hole (414). Two first air-permeable cavities (426) are symmetrically opened on the side surface of the moving pipe (425). A first plugging structure is arranged above the first air-permeable cavity (426) inside the moving pipe (425). An adjusting structure is arranged below the plugging structure inside the moving pipe (425). An air inlet hole (413) is opened at the bottom side of the installation box (411). A first air injection pipe (461) is fixedly connected to the position corresponding to the air inlet hole (413) on the outer bottom side of the installation box (411). An air inlet structure is arranged at the position corresponding to the air inlet hole (413) on the inner bottom side of the installation box (411). A second plugging structure is arranged on the side surface of the moving pipe (425) corresponding to the air inlet mechanism. The upper end of the first connecting block (223) is fixedly connected to a second connecting spring (226). The lower end of the first connecting block (223) is fixedly connected to a first connecting spring (224). The sensing structure includes a connecting rod (222) fixedly connected to the bottom side of the piston (221). The connecting rod (222) extends downward into the interior of the second movable cavity (214). A first connecting block (223) is fixedly connected to the bottom side of the connecting rod (222) corresponding to the interior of the second movable cavity (214). A second extrusion contactor (227) is fixedly connected to the wall surface of the detection tank (211) corresponding to the upper end inside the second movable cavity (214). A first extrusion contactor (225) is fixedly connected to the wall surface of the detection tank (211) corresponding to the lower end inside the second movable cavity (214). An extrusion block (232) is movably arranged above the first extrusion contactor (225) inside the second movable cavity (214). A sliding groove (231) is opened on the wall surface of the second movable cavity (214) corresponding to the piston (221) at the bottom side. The extrusion block (232) is clamped inside the sliding groove (231). A third movable cavity (228) is opened at a position near the bottom side inside the connecting rod (222). A movable rod (229) is movably installed inside the third movable cavity (228). The movable rod (229) penetrates downward through the bottom side of the connecting rod (222) and the side surface of the first connecting block (223) and is fixedly connected to the upper end of the extrusion block (232). A fourth movable cavity (235) is opened on the side surface of the sliding groove (231) corresponding to the wall surface of the detection tank (211).A limiting groove (234) is provided on the side surface of the extrusion block (232). An active clamping block (236) is movably installed inside the third connecting spring (237). The side surface of the active clamping block (236) is fixedly connected to the third connecting spring (237). One end of the third connecting spring (237) far from the active clamping block (236) is fixedly connected to the side surface of the fourth active cavity (235). A third extrusion contactor (233) is fixedly connected to the bottom side of the sliding groove (231) corresponding to the lower part of the extrusion block (232).

2. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 1, characterized in that: The inner side of the installation box (411) is provided with a first installation cavity (427). The upper side inside the first installation cavity (427) is fixedly connected with a first electromagnetic push rod (421). The output end of the first electromagnetic push rod (421) is fixedly connected with a second connecting block (422). The second connecting block (422) is fixedly connected with the side surface of the moving pipe (425). The lower side inside the first installation cavity (427) is fixedly connected with a second electromagnetic push rod (423). The output end of the second electromagnetic push rod (423) is fixedly connected with a third connecting block (424). The third connecting block (424) is fixedly connected with the side surface of the moving pipe (425). The first electromagnetic push rod (421) is electrically connected with the second extrusion contactor (227), and the second electromagnetic push rod (423) is electrically connected with the first extrusion contactor (225).

3. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 2, wherein: The first plugging structure includes a plug block (431) movably installed inside the moving pipe (425). The upper end of the plug block (431) is fixedly connected with a fourth connecting spring (432). One end of the fourth connecting spring (432) far away from the plug block (431) is fixedly connected to the upper end inside the moving pipe (425).

4. The ultra-high speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 3, characterized in that: The adjusting structure includes an air charging pipe (433) movably installed inside the moving pipe (425). Second air permeable cavities (436) are correspondingly and equidistantly arranged on the side surface of the air charging pipe (433). A support box (434) is movably installed inside the air charging pipe (433).

5. A super-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 4, characterized in that: A second installation cavity (441) is arranged at the bottom side of the air charging pipe (433). A detachable telescopic cylinder (443) is arranged inside the second installation cavity (441). The output end of the telescopic cylinder (443) is fixedly connected with a movable column (435). The upper side of the movable column (435) is fixedly connected with the bottom side of the support box (434).

6. The ultra-high speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 5, characterized in that: The bottom side of the telescopic cylinder (443) is fixedly connected with a mounting frame (442). The side surface of the mounting frame (442) is fixedly connected with a second fixing block (452). At the position corresponding to the second fixing block (452) on the side surface of the air charging pipe (433), a first fixing block (451) is fixedly connected. The first fixing block (451) and the second fixing block (452) are fixedly connected through a tightening threaded part (453) arranged inside the first fixing block (451) and the second fixing block (452).

7. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 6, characterized in that: The air intake structure includes a second injection pipe (511) fixedly connected to the bottom side inside the installation box (411) corresponding to the air intake hole (413). The cross section of the second injection pipe (511) is a right trapezoidal ring. A sealing cavity (512) is arranged on the outer inclined surface of the second injection pipe (511). A sealing ring (513) is arranged inside the sealing cavity (512). The second plugging structure includes a fourth connecting block (514) fixedly connected to the side surface of the moving pipe (425). An adaptation cavity (515) is arranged at the bottom side of the fourth connecting block (514) corresponding to the position of the sealing ring (513).

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