Ultrahigh-speed environment-friendly gas-insulated alternating-current metal closed switch

Abstract

The invention relates to the technical field of gas-insulated metal-enclosed switches, and discloses an ultrahigh-speed environment-friendly gas-insulated alternating-current metal-enclosed switch which comprises a mounting base, a metal-enclosed switch cylinder is fixedly connected to the upper side of the mounting base, and a detection tank is fixedly arranged on the bottom side of the metal-enclosed switch cylinder. According to the invention, the pressure change in the metal-enclosed switch cylinder is sensed through the moving position of the piston, and the movement of the moving pipe is controlled through the sensing structure, so that the supplement of gas in the metal-enclosed switch cylinder is realized. Through the cooperation between the piston and the sensing mechanism, the intensity of the air pressure in the metal enclosed switch cylinder is automatically sensed, and then the internal gas of the metal enclosed switch cylinder is automatically supplemented, so that sufficient perfluoroisobutyronitrile insulating gas is kept in the metal enclosed switch cylinder. And when the internal gas is reduced, the internal gas is automatically supplemented, so that the working efficiency is improved.

Description

Technical Field

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

[0002] Ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switchgear is a metal-enclosed switchgear and control equipment that uses gas above atmospheric pressure as the insulating medium. It consists of circuit breakers, disconnectors, grounding switches, mutual inductors, lightning arresters, busbars, connectors and outgoing line terminals. All of these devices or components are enclosed in a metal grounded casing.

[0003] The existing ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switchgear basically has the advantages of compact structure, small footprint, high reliability, flexible configuration, convenient installation, strong safety, strong environmental adaptability, and small maintenance workload, and can meet the use requirements of switch control during high-voltage power transmission. However, for the existing gas-insulated metal-enclosed switchgear, perfluoroisobutyronitrile gas is usually used. Perfluoroisobutyronitrile is a new type of environmentally friendly insulating gas, and its insulation performance is twice that of sulfur hexafluoride. On the one hand, during a long period of work, the internal high-pressure perfluoroisobutyronitrile insulating gas is easy to overflow. The existing technology usually uses a pressure detection gauge to directly detect the internal pressure and then manually injects high-pressure gas into the interior. Manual detection is required, and the degree of automation is low. 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 re-injects perfluoroisobutyronitrile insulating gas, which delays production. For this reason, 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] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch, comprising a mounting base, a metal-enclosed switch column is fixedly connected to the upper side of the mounting base, a detection tank is fixedly arranged on the bottom side of the metal-enclosed switch column, a first guide pipe is fixedly connected to the upper end of the detection tank, the first guide pipe extends to the interior of the metal-enclosed switch column, a first active cavity and a second active cavity are opened inside the detection tank, the second active cavity is arranged below the first active cavity, a movable piston is arranged inside the detection tank, a sensing structure connected to the piston is arranged inside the second active cavity, a mounting box is fixedly arranged on the bottom side of the metal-enclosed switch column, and a second guide pipe is fixedly connected to the upper end of the mounting box, The second guide tube extends to the interior of the metal-enclosed switch column, and a movable hole is provided on the bottom side of the installation box, and a movable movable tube is movably arranged inside the movable hole, and two first air permeable cavities are symmetrically provided on the side of the movable tube, and a first blocking structure is arranged above the inside of the movable tube corresponding to the first air permeable cavity, and an adjustment structure is arranged below the inside of the movable tube corresponding to the blocking structure, and an air inlet hole is provided on the bottom side of the installation box, and a first air injection tube is fixedly connected to the position of the air inlet hole on the external bottom side of the installation box, and an air inlet structure is arranged on the position of the air inlet hole on the internal bottom side of the installation box, and a second blocking structure is arranged on the side of the movable tube corresponding to the position of the air inlet mechanism, and a second connecting spring is fixedly connected to the upper end of the first connecting block, and a first connecting spring is fixedly connected to the lower end of the first connecting block.

[0006] Preferably, the sensing structure includes a connecting rod fixedly connected to the bottom side of the piston, the connecting rod extends downward to the interior of the second active chamber, the bottom side of the connecting rod is fixedly connected to the interior of the second active chamber corresponding to the first connecting block, the upper end of the interior of the second active chamber is fixedly connected to the avoidance of the detection tank with a second extrusion contactor, the lower end of the interior of the second active chamber is fixedly connected to the wall of the detection tank with the first extrusion contactor, and the interior of the second active chamber is movably provided with an extrusion block corresponding to the upper side of the first extrusion contactor.

[0007] Preferably, a sliding groove is provided on the wall surface of the piston corresponding to the inner bottom side of the second movable chamber, the extrusion block is clamped in the sliding groove, a third movable chamber is provided inside the connecting rod near the bottom side, a movable rod is movably installed inside the third movable chamber, the movable rod penetrates downwardly 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 provided on the side of the sliding groove corresponding to the wall of the detection tank, a limiting groove is provided on the side 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 of the movable clamping block, one end of the third connecting spring away from the movable clamping block is fixedly connected to the side of the fourth movable cavity, and a third extrusion contactor is fixedly connected to the bottom of the sliding groove corresponding to the bottom of the extrusion block.

[0009] Preferably, a first installation cavity is opened on the inner side of the installation box, a first electromagnetic push rod is fixedly connected to the upper inner side of the first installation cavity, a second connecting block is fixedly connected to the output end of the first electromagnetic push rod, the second connecting block is fixedly connected to the side of the moving tube, a second electromagnetic push rod is fixedly connected to the lower inner side of the first installation cavity, a third connecting block is fixedly connected to the output end of the second electromagnetic push rod, the third connecting block is fixedly connected to the side of the moving tube, 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 blocking structure comprises a blocking block movably mounted inside the moving tube, an upper end of the blocking block is fixedly connected to a fourth connecting spring, and an end of the fourth connecting spring away from the blocking block is fixedly connected to the inner upper end of the moving tube.

[0011] Preferably, the adjustment structure comprises an inflatable tube movably mounted inside the movable tube, second air permeable cavities are equidistantly provided on corresponding sides of the inflatable tube, and a support box is movably mounted inside the inflatable tube.

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

[0013] Preferably, a mounting frame is fixedly connected to the bottom side of the telescopic cylinder, a second fixed block is fixedly connected to the side of the mounting frame, a first fixed block is fixedly connected to the side of the inflation tube at a position corresponding to the second fixed block, and the first fixed block and the second fixed block are fixedly connected by a locking screw member arranged inside the first fixed block and the second fixed block.

[0014] Preferably, the air intake structure includes a second air injection pipe fixedly connected to the inner bottom side of the installation box at a position corresponding to the air inlet hole, the cross-section of the second air injection pipe is a right-angled trapezoidal ring, a sealing cavity is opened at the outer inclined surface of the second air injection pipe, a sealing ring is arranged inside the sealing cavity, and the second blocking structure includes a fourth connecting block connected to the side of the mobile tube, and an adaptation cavity is opened on the bottom side of the fourth connecting block at a position corresponding to the sealing ring.

[0015] Beneficial Effects

[0016] The present invention provides an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch.

[0017] Beneficial effects:

[0018] (1) The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch senses the pressure change inside the metal-enclosed switch column by the moving position of the piston, controls the movement of the moving tube by the sensing structure to replenish the gas inside the metal-enclosed switch column, and automatically senses the strength of the gas pressure inside the metal-enclosed switch column by 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 sufficient perfluoroisobutyronitrile insulating gas. When the gas inside becomes less, the gas inside is automatically replenished, thereby improving work efficiency.

[0019] (2) When the desiccant inside the support box of the ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch needs to be replaced, the first air permeable cavity is kept sealed by the cooperation between the support box and the first sealing structure when the desiccant inside the support box is replaced. When the pressure inside the metal-enclosed switch column needs to be relieved, the support box is moved upward to connect the inside of the installation box through the second air permeable cavity so that the inside of the inflation tube can be discharged. The desiccant is placed inside the support box to adsorb the water vapor inside the metal-enclosed switch column, thereby adjusting the environment inside the metal-enclosed switch column in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the implementation or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the local structure of the detection tank of the present invention;

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

[0025] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0026] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 6 is a cross-sectional view of a moving tube of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C in the middle.

[0029] Legend:

[0030] 111, mounting base; 112, metal-enclosed switch column; 211, detection tank; 212, first guide pipe; 213, first active cavity; 214, second active 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 active cavity; 229, movable rod; 231, sliding groove; 232, extrusion block; 233, third extrusion contactor; 234, limiting groove; 235, fourth active cavity; 236, movable block; 237, third connecting spring; 411, mounting box; 412, second guide pipe; 413, air intake Hole; 414, movable hole; 421, first electromagnetic push rod; 422, second connecting block; 423, second electromagnetic push rod; 424, third connecting block; 425, movable tube; 426, first air permeable cavity; 427, first mounting cavity; 431, blocking block; 432, fourth connecting spring; 433, inflatable tube; 434, supporting box; 435, movable column; 436, second air permeable cavity; 441, second mounting cavity; 442, mounting frame; 443, telescopic cylinder; 451, first fixed block; 452, second fixed block; 453, fastening threaded member; 461, first gas injection pipe; 511, second gas injection pipe; 512, sealing cavity; 513, sealing ring; 514, fourth connecting block; 515, adapter cavity. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 7As shown, an ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch comprises a mounting base 111, a metal-enclosed switch column 112 is fixedly connected to the upper side of the mounting base 111, a detection tank 211 is fixedly arranged on the bottom side of the metal-enclosed switch column 112, a first guide pipe 212 is fixedly connected to the upper end of the detection tank 211, the first guide pipe 212 extends to the interior of the metal-enclosed switch column 112, a first active cavity 213 and a second active cavity 214 are provided in the interior of the detection tank 211, the second active cavity 214 is arranged below the first active cavity 213, a movable piston 221 is arranged in the interior of the detection tank 211, a sensing structure connected to the piston 221 is arranged in the interior of the second active cavity 214, and the metal-enclosed switch A mounting box 411 is fixedly provided on the bottom side of the switch column 112, and a second guide tube 412 is fixedly connected to the upper end of the mounting box 411, and the second guide tube 412 extends to the interior of the metal-enclosed switch column 112, and a movable hole 414 is provided on the bottom side of the mounting box 411, and a movable movable tube 425 is movably provided inside the movable hole 414, and two first air permeable cavities 426 are symmetrically provided on the side of the movable tube 425, and a first blocking structure is provided above the first air permeable cavity 426 in the interior of the movable tube 425, and an adjustment structure is provided below the blocking structure in the interior of the movable tube 425, and the adjustment structure includes an inflatable tube 433 movably installed in the interior of the inflatable tube 425, and second air permeable cavities 436 are equidistantly provided on the side of the inflatable tube 433, and the inflatable A support box 434 is movably installed inside the tube 433, a desiccant is placed inside the support box 434, and the support box 434 is moved to the position of the second air permeable cavity 436, and the moisture inside the metal-enclosed switch column 112 is adsorbed by the dryer placed inside the support box 434, a second installation cavity 441 is opened on the bottom side of the inflation tube 433, a detachable telescopic cylinder 443 is arranged inside the second installation cavity 441, and a movable column 435 is fixedly connected to the output end of the telescopic cylinder 443, and the upper side of the movable column 435 is fixedly connected to the bottom side of the support box 434, and the inflation tube 433 is pulled out from the inside of the mobile tube 425, and when the support box 434 moves downward, the fourth connecting spring 432 drives the blocking block 431 to move downward to the first air permeable cavity 42 6 is blocked, 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 to the top of the second air permeable cavity 436 so that the inflation tube 433 is connected 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 tube 433 through the second air permeable cavity 436 and is discharged outward, the bottom side of the telescopic cylinder 443 is fixedly connected to the mounting frame 442, the side of the mounting frame 442 is fixedly connected to the second fixing block 452, the side of the inflation tube 433 is fixedly connected 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 locking screw 453 arranged inside the first fixing block 451 and the second fixing block 452, an air inlet hole 413 is opened on the bottom side of the installation box 411, a first air injection pipe 461 is fixedly connected to the position of the air inlet hole 413 at the outer bottom side of the installation box 411, an air intake structure is arranged at the position of the air inlet hole 413 at the inner bottom side of the installation box 411, the air intake structure includes a second air injection pipe 511 fixedly connected to the position of the air inlet hole 413 at the inner bottom side of the installation box 411, the cross-section of the second air injection pipe 511 is a right-angled trapezoidal ring, a sealing cavity 512 is opened on the outer inclined surface of the second air injection pipe 511, and a sealing cavity 512 is arranged inside The ring 513, the second blocking structure includes a fourth connecting block 514 connected to the side of the mobile tube 425, the bottom side of the fourth connecting block 514 is provided with an adapting cavity 515 corresponding to the position of the sealing ring 513, and the side of the mobile tube 425 is provided with a second blocking structure corresponding to the position of the air intake mechanism, the upper end of the first connecting block 223 is fixedly connected with the second connecting spring 226, and the lower end of the first connecting block 223 is fixedly connected with the first connecting spring 224, the space inside the detection tank 211 is separated by the piston 221, and the space above the piston 221 is connected to the metal-enclosed switch column 112, so the pressure of the space above the detection tank 211 is the same as that inside the metal-enclosed switch column 112. When the internal gas of the metal-enclosed switch cylinder 112 leaks, the pressure above the piston 221 decreases, and the piston 221 starts to move upward. After the piston 221 moves upward for a distance, the sensing structure causes the moving tube 425 to move. The moving tube 425 drives the second blocking structure and the air intake structure to separate from each other, so that the gas can enter the interior of the installation box 411. The gas then enters the interior of the metal-enclosed switch cylinder 112 through the second guide tube 412 to replenish the gas inside the metal-enclosed switch cylinder 112. When the internal pressure of the metal-enclosed switch cylinder 112 increases, the piston 221 is squeezed to move downward. After reaching the appropriate position, the piston 221 causes the moving tube 425 to move downward through the transmission structure. The air intake structure is blocked by the second blocking structure and the air supply operation of the air intake structure is stopped. When the second blocking structure blocks the air intake mechanism, the water vapor inside the wall-mounted box 411 enters the air intake structure. When it is used again, the desiccant is fed into the metal-enclosed switch column 112 through the regulating structure to dry the water vapor inside the metal-enclosed switch column 112. When the regulating structure is taken out to replace the desiccant, the position of the first air permeable cavity 426 is blocked by the first blocking structure to avoid gas leakage. When the internal air pressure of the metal-enclosed switch column 112 is too high, the gas inside the metal-enclosed switch column 112 can be depressurized by moving the regulating structure.

[0033] The sensing structure includes a connecting rod 222 fixedly connected to the bottom side of the piston 221, the connecting rod 222 extends downward to the inside of the second active chamber 214, the bottom side of the connecting rod 222 is fixedly connected to the inside of the second active chamber 214 corresponding to the first connecting block 223, the upper end of the second active chamber 214 is fixedly connected to the avoidance of the detection tank 211, the lower end of the second active chamber 214 is fixedly connected to the wall of the detection tank 211, and the inner lower end of the second active chamber 214 is fixedly connected to the first extrusion contactor 225 corresponding to the wall of the detection tank 211, and the second active chamber 214 is movably provided with an extrusion block 232 above the first extrusion contactor 225. When the air pressure inside the metal-enclosed switch cylinder 112 changes, the position of the piston 221 will also change accordingly. When the first When the connecting block 223 moves upward and is about to be squeezed out to the second squeezing contactor 227, the first connecting block 223 first drives the squeezing block 232 to move upward, and the squeezing block 232 is separated from the first squeezing contactor 225, and the force applied to the moving tube 425 is released through the first squeezing contactor 225, and then the first connecting block 223 contacts the second squeezing contactor 227 upward to move the moving tube 425 upward and simultaneously allow the gas to be injected into the interior of the installation box 411 through the air intake structure. When the internal gas pressure of the metal-enclosed switch column 112 increases, the piston 221 is squeezed to move downward, and the piston 221 drives the first connecting block 223 to move downward, and the first connecting block 223 squeezes the squeezing block 232 to move downward. The extrusion block 232 squeezes the first extrusion contactor 225 so that the moving tube 425 moves downward and the air intake is terminated to complete the gas replenishment operation inside the metal-enclosed switch column 112. A sliding groove 231 is provided on the wall surface of the piston 221 corresponding to the inner bottom side of the second active chamber 214. The extrusion block 232 is clamped in the inner part of the sliding groove 231. A third active chamber 228 is provided near the bottom side of the connecting rod 222. An active rod 229 is movably installed in the inner part of the third active chamber 228. The active rod 229 penetrates downwardly through the bottom side of the connecting rod 222 and the side 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 in contact with the first extrusion contactor 225, when the first connection block 223 is about to contact with 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 with the second extrusion contactor 227, the side of the sliding groove 231 is provided with a fourth active cavity 235 corresponding to the wall surface of the detection tank 211, the side of the extrusion block 232 is provided with a limiting groove 234, the inside of the third connection spring 237 is movably installed with an active block 236, the side of the active block 236 is fixedly connected with the third connection spring 237, and the end of the third connection spring 237 away from the active block 236 is fixedly connected to the side of the fourth active cavity 235,The bottom side of the sliding groove 231 corresponds to the bottom of the squeezing block 232, and the third squeezing contactor 233 is fixedly connected. The movable block 236 and the third connecting spring 237 enter the limiting groove 234 to limit the movement of the squeezing block 232. The squeezing block 232 squeezes the first squeezing contactor 225 downward and also squeezes the third squeezing contactor 233. The ventilation process of the air intake structure is realized by squeezing the third squeezing contactor 233.

[0034] A first mounting cavity 427 is provided on the inner side of the mounting box 411, and a first electromagnetic push rod 421 is fixedly connected to the upper inner side of the first mounting cavity 427, and a second connecting block 422 is fixedly connected to the output end of the first electromagnetic push rod 421, and the second connecting block 422 is fixedly connected to the side of the moving tube 425; a second electromagnetic push rod 423 is fixedly connected to the lower inner side of the first mounting cavity 427, and a third connecting block 424 is fixedly connected to the output end of the second electromagnetic push rod 423, and the third connecting block 424 is fixedly connected to the side of the moving tube 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 blocking structure includes a blocking block 431 movably mounted inside the moving tube 425, and a fourth connecting spring 432 is fixedly connected to the upper end of the blocking block 431, and one end of the fourth connecting spring 432 away from the blocking block 431 is fixedly connected to the upper inner end of the moving tube 425.

[0035] Working principle of the present invention:

[0036] When in use, the space inside the detection tank 211 is separated by the piston 221, and the space above the piston 221 is connected to the metal-enclosed switch column 112, so the pressure of the space above the detection tank 211 is the same as that inside the metal-enclosed switch column 112. When the internal gas of the metal-enclosed switch column 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 distance, the sensing structure moves the moving tube 425, and the moving tube 425 drives the second blocking structure and the air intake structure to separate from each other, so that the gas can enter the interior of the installation box 411, and the gas then enters the interior of the metal-enclosed switch column 112 through the second guide tube 412. The piston 221 is pressed downward to replenish the gas inside the metal-enclosed switch column 112. When the internal pressure of the metal-enclosed switch column 112 increases, the piston 221 is pressed downward to move until it reaches a suitable position. The piston 221 then moves the moving tube 425 downward through the transmission structure to block the air intake structure through the second blocking structure and stop the gas supply operation of the air intake structure. When the second blocking structure blocks the air intake mechanism, the water vapor inside the wall-mounted box 411 enters the interior of the air intake structure. When it is used again, the desiccant is sent into the interior of the metal-enclosed switch column 112 through the adjustment structure to dry the water vapor inside the metal-enclosed switch column 112. When the adjustment structure is taken out to replace the desiccant, the desiccant is removed through the adjustment structure. The first sealing structure is used to seal the position of the first air permeable cavity 426 to prevent gas leakage. When the internal air pressure of the metal-enclosed switch cylinder 112 is too high, the gas inside the metal-enclosed switch cylinder 112 can be depressurized by moving the adjustment structure. When the internal air pressure of the metal-enclosed switch cylinder 112 changes, the position of the piston 221 will also change. When the first connecting block 223 moves upward and is about to be squeezed out to the second extrusion contactor 227, the first connecting block 223 first drives the extrusion block 232 to move upward, and the extrusion block 232 is separated from the first extrusion contactor 225. The force on the moving tube 425 is released by the first extrusion contactor 225, and then the first connecting block 223 moves upward. The piston 221 is pressed downward by the second extrusion contactor 227 to move the moving tube 425 upward and the gas is injected into the installation box 411 through the air intake structure. When the internal gas pressure of the metal-enclosed switch column 112 increases, the piston 221 is pressed downward to drive the first connecting block 223 to move downward. The first connecting block 223 presses the extrusion block 232 to move downward. The extrusion block 232 presses the first extrusion contactor 225 to move the moving tube 425 downward and ends the air intake to complete the gas replenishment operation inside the metal-enclosed switch column 112. After the first connecting block 223 is pressed by the extrusion block 232, the extrusion block 232 is always in contact with the first extrusion contactor 225.When 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. The movable block 236 and the third connecting spring 237 enter the interior of the limiting groove 234 to limit the movement of the extrusion block 232. The extrusion block 232 squeezes the first extrusion contactor 225 downward and also squeezes the third extrusion contactor 233. The ventilation process of the air intake structure is realized by squeezing the third extrusion contactor 233. The desiccant is placed inside the support box 434, and the support box 434 is moved to the position of the second air permeable cavity 436. The dryer is used to absorb the moisture inside the metal-enclosed switch column 112, and the air-filled tube 433 is pulled out from the inside of the movable tube 425. When the support box 434 moves downward, the fourth connecting spring 432 drives the block 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, and 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 to the top of the second air-permeable cavity 436 so that the air-filled tube 433 is connected with the inside of the installation box 411 through the second air-permeable cavity 436, and the gas inside the installation box 411 enters the inside of the air-filled tube 433 through the second air-permeable cavity 436 and is discharged outward.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch, comprising a mounting base (111), a metal-enclosed switch column (112) being fixedly connected to the upper side of the mounting base (111), a detection tank (211) being fixedly arranged on the bottom side of the metal-enclosed switch column (112), a first guide pipe (212) being fixedly connected to the upper end of the detection tank (211), and the first guide pipe (212) extending to the interior of the metal-enclosed switch column (112), characterized in that: The detection tank (211) is provided with a first movable cavity (213) and a second movable cavity (214) inside, 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), a mounting box (411) is fixedly arranged on the bottom side of the metal-enclosed switch column (112), a second guide tube (412) is fixedly connected to the upper end of the mounting box (411), the second guide tube (412) extends to the inside of the metal-enclosed switch column (112), a movable hole (414) is provided on the bottom side of the mounting box (411), a movable moving tube (425) is movably arranged inside the movable hole (414), and the movable tube (425) is arranged on the bottom side of the mounting box (411). Two first air permeable cavities (426) are symmetrically provided on the side surface; a first blocking structure is provided above the first air permeable cavities (426) in the interior of the movable tube (425); an adjusting structure is provided below the blocking structure in the interior of the movable tube (425); an air inlet hole (413) is provided on the bottom side of the mounting box (411); a first air injection pipe (461) is fixedly connected to the position of the air inlet hole (413) on the outer bottom side of the mounting box (411); an air intake structure is provided on the inner bottom side of the mounting box (411) at the position of the air inlet hole (413); a second blocking structure is provided on the side surface of the movable tube (425) at the position of the air intake mechanism; a second connecting spring (226) is fixedly connected to the upper end of the first connecting block (223); and a first connecting spring (224) is fixedly connected to the lower end of the first connecting block (223).

2. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 1, characterized in that: The sensing structure comprises a connecting rod (222) fixedly connected to the bottom side of the piston (221), the connecting rod (222) extending downward to the inside of the second active chamber (214), the bottom side of the connecting rod (222) corresponding to the inside of the second active chamber (214) is fixedly connected with a first connecting block (223), the upper end of the inside of the second active chamber (214) corresponding to the avoidance of the detection tank (211) is fixedly connected with a second extrusion contactor (227), the lower end of the inside of the second active chamber (214) corresponding to the wall surface of the detection tank (211) is fixedly connected with a first extrusion contactor (225), and the inside of the second active chamber (214) is movably provided with an extrusion block (232) corresponding to the upper side of the first extrusion contactor (225).

3. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 2, characterized in that: A sliding groove (231) is provided on the wall surface of the piston (221) corresponding to the inner bottom side of the second movable chamber (214); the extrusion block (232) is clamped in the interior of the sliding groove (231); a third movable chamber (228) is provided in the interior of the connecting rod (222) near the bottom side; a movable rod (229) is movably installed in the interior of the third movable chamber (228); the movable rod (229) penetrates downwardly 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).

4. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 3, characterized in that: A fourth movable cavity (235) is provided on the side of the sliding groove (231) corresponding to the wall surface of the detection tank (211); a limiting groove (234) is provided on the side of the extrusion block (232); an movable clamping block (236) is movably installed inside the third connecting spring (237); a third connecting spring (237) is fixedly connected to the side 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 of the fourth movable cavity (235); and a third extrusion contactor (233) is fixedly connected to the bottom side of the sliding groove (231) corresponding to the bottom of the extrusion block (232).

5. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 4, characterized in that: A first installation cavity (427) is provided on the inner side of the installation box (411); a first electromagnetic push rod (421) is fixedly connected to the upper side of the first installation cavity (427); a second connection block (422) is fixedly connected to the output end of the first electromagnetic push rod (421); the second connection block (422) is fixedly connected to the side of the moving tube (425); a second electromagnetic push rod (423) is fixedly connected to the lower side of the first installation cavity (427); a third connection block (424) is fixedly connected to the output end of the second electromagnetic push rod (423); the third connection block (424) is fixedly connected to the side of the moving tube (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).

6. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 5, characterized in that: The first blocking structure comprises a blocking block (431) movably mounted inside the moving tube (425), the upper end of the blocking block (431) being fixedly connected to a fourth connecting spring (432), and one end of the fourth connecting spring (432) away from the blocking block (431) being fixedly connected to the inner upper end of the moving tube (425).

7. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 6, characterized in that: The adjustment structure comprises an inflatable tube (433) movably mounted inside the moving tube (425), second air permeable cavities (436) are equidistantly provided on the side of the inflatable tube (433), and a support box (434) is movably mounted inside the inflatable tube (433).

8. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 7, characterized in that: A second installation cavity (441) is provided on the bottom side of the inflation tube (433), a detachable telescopic cylinder (443) is provided inside the second installation cavity (441), an output end of the telescopic cylinder (443) is fixedly connected to a movable column (435), and the upper side of the movable column (435) is fixedly connected to the bottom side of the support box (434).

9. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 8, characterized in that: The bottom side of the telescopic cylinder (443) is fixedly connected to a mounting frame (442), the side of the mounting frame (442) is fixedly connected to a second fixing block (452), the side of the inflation tube (433) is fixedly connected to a first fixing block (451) at a position corresponding to the second fixing block (452), and the first fixing block (451) and the second fixing block (452) are fixedly connected via a locking screw (453) disposed inside the first fixing block (451) and the second fixing block (452).

10. The ultra-high-speed environmentally friendly gas-insulated AC metal-enclosed switch according to claim 9, characterized in that: The air intake structure comprises a second air injection pipe (511) fixedly connected to the inner bottom side of the installation box (411) at a position corresponding to the air intake hole (413); the cross section of the second air injection pipe (511) is a right-angle trapezoidal ring; a sealing cavity (512) is provided at the outer inclined surface of the second air injection pipe (511); a sealing ring (513) is provided inside the sealing cavity (512); the second blocking structure comprises a fourth connecting block (514) connected to the side of the mobile tube (425); an adapting cavity (515) is provided on the bottom side of the fourth connecting block (514) at a position corresponding to the sealing ring (513).

Images