An environmentally friendly gas-insulated switch

Abstract

The present invention relates to an environmentally friendly gas-insulated switch, belonging to the field of electromechanical equipment. The switch comprises a metal frame assembly, on which are mounted a partition assembly, a vacuum interrupter switch, an isolating switch, and a grounding connection assembly. The vacuum interrupter switch is positioned directly above the isolating switch, and the grounding connection assembly is positioned to one side of the isolating switch. The isolating switch is rotated to alternately engage with the vacuum interrupter switch and the grounding connection assembly to achieve closing, opening, and grounding operations. The partition assembly is positioned between the vacuum interrupter switch and the isolating switch to increase creepage distances between phases and relative to ground. The present invention provides an environmentally friendly switch for use in environmentally friendly gas cabinets that is simple in structure, compact in size, environmentally friendly, has excellent insulation performance, and is safe and reliable to use.

Description

Technical Field

[0001] The present invention belongs to the field of electromechanical equipment, and in particular relates to an environmentally friendly switch for an environmentally friendly gas cabinet, which uses dry air as the main insulation, vacuum arc extinguishing, and all high-voltage live parts are sealed in a slightly positive pressure (≤0.02MPa) sealed metal box, and has normal breaking capacity under zero gauge pressure conditions. Background Art

[0002] Medium-voltage switchgear is widely used in the current switchgear industry. Due to the excellent arc-extinguishing properties of SF6 gas, most medium-voltage switchgear insulation solutions use SF6 gas. However, SF6 gas can decompose into toxic gases when exposed to arcs, and leakage poses significant risks to humans and the environment. Therefore, replacing SF6 with environmentally friendly gas-insulated switchgear, which offers safety, reliability, and compactness, is an inevitable trend.

[0003] Since most of the existing environmentally friendly gas switchgear on the market use switches with upper isolation and lower circuit breaker structure, the electrical solution for 10kV power grid distribution using environmentally friendly gas as the main insulation is single and cannot meet market needs. Summary of the Invention

[0004] The present invention aims to provide an environmentally friendly gas-insulated switchgear to solve the technical problems existing in the above-mentioned background technology.

[0005] To achieve the above objectives, the specific technical solution of an environmentally friendly gas-insulated switch of the present invention is as follows:

[0006] An environmentally friendly gas-insulated switchgear comprises a metal frame assembly, on which are mounted a partition assembly, a vacuum interrupter switch, an isolating switch, and a grounding connection assembly. The vacuum interrupter switch is positioned directly above the isolating switch, and the grounding connection assembly is positioned on one side of the isolating switch. The isolating switch is rotated to alternately engage with the vacuum interrupter switch and the grounding connection assembly to achieve closing, opening, and grounding operations.

[0007] The partition assembly is distributed between the vacuum interrupter switch and the disconnector to increase the creepage distance between phases;

[0008] The metal frame components are cold stamped, bent, welded using cold rolled steel plates and are hot dipped galvanized on their surface.

[0009] Furthermore, the metal frame assembly includes an upper fixing frame and a lower fixing frame, and the upper / lower fixing frames are connected by a partition assembly;

[0010] A vacuum interrupter switch is rotatably mounted on the upper fixing frame, and an isolating switch is rotatably mounted on the lower fixing frame.

[0011] Furthermore, the partition assembly includes a first partition arranged on the lower fixing frame, and a second partition plate and a third partition plate arranged on both sides of the upper fixing frame, wherein a plurality of partition plates (204) are parallelly clamped between the second / third partition plates;

[0012] The second / third isolation plate is also provided with a plurality of process holes.

[0013] Furthermore, the vacuum interrupter switch includes a breaking part dynamic fit rotatably connected to the metal frame assembly, one end of the breaking part dynamic fit is engaged with a hexagonal transmission main shaft of the breaking part, and insulating spacers and breaking part guide sleeves are alternately arranged on the hexagonal transmission main shaft of the breaking part;

[0014] A breaking part contact pull rod is slidably arranged in the breaking part guide sleeve, a breaking part compression spring is sleeved around the breaking part contact pull rod, a breaking part vacuum interrupter is arranged at one end of the breaking part contact pull rod away from the breaking part guide sleeve, and a breaking part lower side isolating static contact is arranged below the breaking part vacuum interrupter;

[0015] The outer shell of the vacuum interrupter of the breaking part is made of inorganic insulating material, cylindrical in shape, sealed with metal covers at both ends, and a corrugated silicone insulation layer is plastic-coated on the outside.

[0016] Furthermore, the breaking part guide sleeve assembly includes a first breaking part guide sleeve and a second breaking part guide sleeve arranged opposite to each other, a shaft sleeve is sleeved between the first / second breaking part guide sleeves, and a breaking part support frame is sleeved on the shaft sleeve;

[0017] The breaking part support frame is fixedly connected to the partition assembly.

[0018] Furthermore, the contact pull rod of the breaking part includes a moving rod connected to the top of the vacuum interrupter of the breaking part, and a driving rod passing through the top of the moving rod, and a limiting groove is provided on the top of the moving rod;

[0019] The breaking part support frame includes a cylinder sleeved on the shaft sleeve, and a first support leg and a second support leg are integrally formed on both sides of the cylinder. A clamping block is provided between the first / second support legs, and the clamping block passes through the driving rod and is clamped in the limiting groove.

[0020] Furthermore, the isolating switch includes an isolating switch movable fit that is rotatably connected to the metal frame assembly, one end of the isolating switch movable fit is clamped to set the isolating switch transmission main shaft, the isolating switch movable knife is set on the isolating switch transmission main shaft, and the isolating switch movable knife is matched with the isolating static contact and the grounding connection assembly on the lower side of the breaking part.

[0021] Furthermore, the drive main shaft of the disconnector is made of PC / ABS synthetic material by injection molding, and multiple process grooves are opened on the circumference.

[0022] Furthermore, the isolating switch transmission main shaft includes a driving portion and a limiting portion integrally formed with the driving portion. A through hole is provided on the limiting portion, and the isolating switch movable blade sleeve is arranged in the through hole.

[0023] Furthermore, a groove is provided on the driving part, and the groove is connected to the through hole. One end of the isolating switch movable knife cooperates with the isolating static contact and the grounding connection assembly on the lower side of the breaking part, and the other end is rotatably connected to one end of the branch busbar.

[0024] The other end of the branch busbar connector passes through the fixed copper connector and is fixedly connected thereto, and both ends of the fixed copper connector are fixed on the metal frame assembly.

[0025] The environmentally friendly gas-insulated switch of the present invention has the following advantages:

[0026] 1. The present invention fully meets the use requirements of 12kV environmentally friendly gas switchgear;

[0027] 2. The present invention adds a new type of switch to the electrical solution of 10kV grid power distribution with upper circuit breaker and lower isolation, which is mainly insulated by environmentally friendly gas;

[0028] 3. The metal frame assembly of the present invention is made of hot-dip galvanized surface, which effectively increases the reliability of the switch grounding;

[0029] 4. The present invention utilizes a vacuum interrupter to extinguish arcs, is compact, has reliable insulation performance, standardized modules, is safe to use, and is maintenance-free, while also reducing the size of the associated switchgear.

[0030] 5. The enclosed metal box of this invention, which uses dry air as the primary insulating medium, rationally utilizes high-quality materials such as FR-4 insulation material and silicone rubber, which have stable electrical insulation properties and are suitable for high-performance electronic insulation requirements, as the primary materials for the hexagonal drive shaft, partition assembly, insulating spacer, and outer surface of the vacuum interrupter of the switching unit. This minimizes the size of the environmentally friendly gas-insulated switch while ensuring insulation safety, making the switch safer in operation.

[0031] 6. The present invention uses a closed metal box with dry air as the main insulating medium. The isolating switch transmission shaft is made of PC / ABS synthetic material with excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties, and has excellent mechanical properties of toughness, hardness and rigidity. At the same time, the process groove design is adopted to ensure that the isolating switch has sufficient mechanical strength and insulation strength, and also greatly extend the service life of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural axial view of an environmentally friendly gas insulated switchgear according to the present invention.

[0033] Figure 2 The figure is a schematic cross-sectional view of the structure of an environmentally friendly gas insulated switch of the present invention.

[0034] Figure 3 This is a schematic diagram of the structure of the metal frame assembly and partition assembly of an environmentally friendly gas insulated switchgear of the present invention. Figure 1 .

[0035] Figure 4 This is a schematic diagram of the structure of the metal frame assembly and partition assembly of an environmentally friendly gas insulated switchgear of the present invention. Figure 2 .

[0036] Figure 5 This is a schematic structural diagram of a metal frame assembly of an environmentally friendly gas insulated switchgear according to the present invention.

[0037] Figure 6 This is a schematic diagram of the structure of a partition assembly of an environmentally friendly gas insulated switch of the present invention. Figure 1 .

[0038] Figure 7 This is a schematic diagram of the structure of a partition assembly of an environmentally friendly gas insulated switch of the present invention. Figure 1 (Third separator plate not shown).

[0039] Figure 8 This is a schematic diagram of the structure of the vacuum interrupter switch of an environmentally friendly gas insulated switch of the present invention, which is matched with the metal frame assembly and the partition assembly. Figure 1 .

[0040] Figure 9 This is a schematic diagram of the structure of the vacuum interrupter switch of an environmentally friendly gas insulated switch of the present invention, which is matched with the metal frame assembly and the partition assembly. Figure 1 (Second separator plate not shown).

[0041] Figure 10 The diagram is a structural diagram of a vacuum arc extinguishing circuit breaker switch of an environmentally friendly gas insulated switch according to the present invention.

[0042] Figure 11 The present invention is a schematic structural diagram of a disconnecting part guide sleeve, a disconnecting part contact pull rod and a disconnecting part support frame of an environmentally friendly gas insulated switch.

[0043] Figure 12 The present invention is a schematic diagram of the disassembled structure of a disconnecting part guide sleeve, a disconnecting part contact pull rod and a disconnecting part support frame of an environmentally friendly gas insulated switch.

[0044] Figure 13 for Figure 11 side view.

[0045] Figure 14 for Figure 13Cross-sectional view in the BB direction.

[0046] Figure 15 for Figure 14 A partial enlarged view at point C.

[0047] Figure 16 The present invention is a schematic diagram of the installation of an isolating switch of an environmentally friendly gas insulated switch in cooperation with a metal frame assembly and an isolating assembly.

[0048] Figure 17 The figure is a schematic structural diagram of an isolating switch and a grounding connection assembly of an environmentally friendly gas insulated switchgear according to the present invention.

[0049] Figure 18 This is a schematic diagram of the structure of an isolating switch of an environmentally friendly gas insulated switch of the present invention. Figure 1 (Isolator drive shaft not shown).

[0050] Figure 19 This is a schematic diagram of the structure of the isolating switch transmission main shaft of an environmentally friendly gas insulated switch of the present invention. Figure 1 .

[0051] Figure 20 This is a schematic diagram of the structure of the isolating switch transmission main shaft of an environmentally friendly gas insulated switch of the present invention. Figure 2 .

[0052] Figure 21 This is a schematic diagram of the structure of an isolating switch of an environmentally friendly gas insulated switch of the present invention. Figure 2 .

[0053] Figure 22 This is a schematic diagram of the structure of an isolating switch of an environmentally friendly gas insulated switch of the present invention. Figure 3 .

[0054] Figure 23 for Figure 22 A partial enlarged view at point D.

[0055] Explanation of the marks in the figure: 1. Metal frame assembly; 101. Upper fixing frame; 102. Lower fixing frame; 1021. First metal plate; 1022. Second metal plate; 103. Isolating switch support beam; 2. Partition assembly; 201. First partition; 202. Second isolating plate; 203. Third isolating plate; 204. Partition plate; 3. Vacuum interrupter switch; 301. Dynamic fit of the breaking part; 302. Hexagonal transmission main shaft of the breaking part; 303. Insulating spacer; 304. Guide sleeve of the breaking part; 3041. Guide sleeve of the first breaking part; 3042. Guide sleeve of the second breaking part; 305. Contact pull rod of the breaking part; 3051. Moving rod; 3052. Driving rod; 3053. Limiting groove; 306. Breaking Compression spring of the breaking part; 307, vacuum interrupter of the breaking part; 308, isolating static contact on the lower side of the breaking part; 309, sleeve; 310, supporting frame of the breaking part; 3101, cylinder; 3102, first leg; 3103, second leg; 3104, clamping block; 311, flexible connection of the breaking part; 4, isolating switch; 401, dynamic fit of isolating switch; 402, main shaft of transmission of isolating switch; 4021, driving part; 4022, limiting part; 4023, through hole; 4024, groove; 403, movable knife of isolating switch; 404, process groove; 5, grounding connection assembly; 405, voltage regulating spring; 501, grounding bus; 502, grounding static contact; 6, branch busbar connector; 7, fixed copper connector; 8, silicone insulation layer. DETAILED DESCRIPTION

[0056] In order to better understand the purpose, structure and function of the present invention, an environmentally friendly gas insulated switch of the present invention is further described in detail below with reference to the accompanying drawings.

[0057] like Figure 1-Figure 22 As shown, the environmentally friendly gas-insulated switch of the present invention has three working positions for closing, opening, and grounding. It is actuated by the isolating switch movable blade 403 on the isolating switch transmission main shaft 402. When it is closed with the isolating static contact 308 on the lower side of the breaking part, it is closed, and when it is separated, it is opened. Then it moves to the grounding connection assembly 5 and closes with the grounding static blade, which is grounding.

[0058] The present invention provides an integrated upper vacuum interrupter and lower isolating switch 4 switch for environmentally friendly gas insulated switchgear, which has high safety, fast main insulation self-healing, more reasonable structure, small size and adopts dry air as main insulation.

[0059] An environmentally friendly gas-insulated switch, characterized in that it includes a metal frame assembly 1. Preferably, the metal frame assembly 1 is made of 4mm thick cold-rolled steel plate by cold stamping, bending, welding, and hot-dip galvanizing on its surface, and is used to fix and support the vacuum arc circuit breaker switch 3 and the disconnector 4. The metal frame assembly 1 is provided with a partition assembly 2, a vacuum arc circuit breaker switch 3, the disconnector 4 and a grounding connection assembly 5, and the vacuum arc circuit breaker switch 3 is arranged directly above the disconnector 4, and the grounding connection assembly 5 is arranged on one side of the disconnector 4. By rotating the disconnector 4, it is alternately matched with the vacuum arc circuit breaker switch 3 and the grounding connection assembly 5 to realize closing, opening and grounding operations. The environmentally friendly gas-insulated switch is divided into three positions for closing, opening and grounding, which are actuated by the disconnector 4. When it is closed with the vacuum arc circuit breaker switch 3, it is closed, and when it is separated, it is opened. When it moves to the grounding connection assembly 5, it is grounded;

[0060] The partition assembly 2 is distributed between the vacuum interrupter switch 3 and the disconnector 4 to increase the creepage distance between the phases.

[0061] In this embodiment, the metal frame assembly 1 includes an upper fixing frame 101 and a lower fixing frame 102, and the upper and lower fixing frames 101 and 102 are connected by a partition assembly 2. Furthermore, the lower fixing frame 102 includes a first metal plate 1021 and a second metal plate 1022 arranged opposite to each other, and a plurality of disconnector support beams 103 are connected between the first and second metal plates 1021 and 1022.

[0062] The vacuum interrupter switch 3 is rotatably mounted on the upper fixing frame 101 , and the isolating switch 4 is rotatably mounted on the lower fixing frame 102 .

[0063] In this embodiment, the partition assembly 2 includes a first partition 201 arranged on the lower fixing frame 102, and a second isolation plate 202 and a third isolation plate 203 arranged on both sides of the upper fixing frame 101. A plurality of partition plates 204 are parallelly connected between the second / third isolation plates 202 and 203. The first partition 201 is used to increase the relative creepage distance to the ground when the disconnector blade 403 is opened. The plurality of partition plates 204 are located between the vacuum arc extinguishing chamber 307 of the phase A breaking part and the vacuum arc extinguishing chamber 307 of the phase B breaking part, and between the vacuum arc extinguishing chamber 307 of the phase B breaking part and the vacuum arc extinguishing chamber 307 of the phase C breaking part. They are made of FR-4 epoxy insulation material suitable for high-performance electronic insulation requirements, which effectively increases the creepage distance between phases and between the breaks. This allows the environmentally friendly gas insulated switch to achieve product miniaturization design to the greatest extent while ensuring insulation safety.

[0064] The second / third isolation plates 202, 203 are also provided with a plurality of process holes and are made of FR-4 insulation material with stable electrical insulation performance and smooth surface, which is suitable for high-performance electronic insulation requirements. This makes the environmentally friendly gas insulated switch occupy a smaller space and has a more reasonable structure.

[0065] The entire partition assembly 2 is provided to increase the creepage distance between phases and relative to each other, including the creepage distance to metal bolts and the like.

[0066] In this embodiment, the vacuum interrupter switch 3 includes a breaking part dynamic fit 301 rotatably connected to the metal frame assembly 1. One end of the breaking part dynamic fit 301 is engaged with a breaking part hexagonal transmission main shaft 302. Insulating sleeves 303 and breaking part guide sleeves 304 are alternately arranged on the breaking part hexagonal transmission main shaft 302. Three insulating sleeves 303 and three breaking part guide sleeves 304 are provided to realize the closing, opening and grounding functions of the A, B, and C three-phase busbars.

[0067] A breaking part contact rod 305 is slidingly arranged in the breaking part guide sleeve 304, and a breaking part compression spring 306 is sleeved on the circumference of the breaking part contact rod 305. A breaking part vacuum interrupter 307 is arranged at one end of the breaking part contact rod 305 away from the breaking part guide sleeve 304, and a breaking part lower side isolating static contact 308 is arranged below the breaking part vacuum interrupter 307. The outer shell of the breaking part vacuum interrupter 307 is made of inorganic insulating materials such as ceramics and is cylindrical. Both ends are sealed with metal cover plates to form a high vacuum sealed container with a vacuum level less than 1.33×10-3Pa. A 2mm thick corrugated silicone insulation layer 8 is molded on its outside to increase the creepage distance between vacuum breakers so that it meets the requirements of electrical inspection standards in dry air, thereby reducing the volume of the vacuum interrupter; the isolating static contact 308 on the lower side of the breaking part is arranged on the central axis of the vacuum interrupter 307 of the breaking part, and a breaking part soft connection 311 is also provided on the breaking part contact rod 305, and both ends of the breaking part soft connection 311 are arranged through the partition assembly 2 and fixed to the lower end of the breaking part compression spring 306.

[0068] In this embodiment, the hexagonal transmission main shaft 302 of the breaking part, the partition assembly 2 and the insulating spacer 303 are made of FR-4 insulating material with higher mechanical and dielectric properties. The insulating spacer 303 made of silicone material is added between phases to increase the creepage distance between phases, effectively reducing the distance between phases, thereby reducing the size of the overall switch.

[0069] In this embodiment, the breaking portion guide sleeve assembly 304 includes a first breaking portion guide sleeve 3041 and a second breaking portion guide sleeve 3042 arranged opposite to each other. A shaft sleeve 309 is provided between the first / second breaking portion guide sleeves 3041 and 3042. Preferably, the shaft sleeve 309 is made of brass alloy for wear resistance. A breaking portion support frame 310 is provided on the shaft sleeve 309.

[0070] Both ends of the breaking portion support frame 310 are fixedly connected to the partition assembly 2 through screws and nuts.

[0071] In this embodiment, the breaking portion contact pull rod 305 includes a moving rod 3051 connected to the top of the breaking portion vacuum interrupter 307, and a driving rod 3052 extending through the top of the moving rod 3051. A limiting groove 3053 is defined at the top of the moving rod 3051. Furthermore, a breaking portion compression spring 306 is sleeved on the moving rod 3051. The driving rod 3052 is slidably disposed in the first / second breaking portion guide sleeves 3041 and 3042.

[0072] The breaking part support frame 310 includes a cylinder 3101 sleeved on the shaft sleeve 309, and a first support leg 3102 and a second support leg 3103 are integrally formed on both sides of the cylinder 3101. A clamping block 3104 is set between the first / second support legs 3102 and 3103, and the clamping block 3104 passes through the driving rod 3052 and is engaged in the limiting groove 3053.

[0073] In this embodiment, the isolating switch 4 includes an isolating switch movable fit 401 that is rotatably connected to the metal frame assembly 1. One end of the isolating switch movable fit 401 is clamped with an isolating switch transmission main shaft 402. An isolating switch movable knife 403 is provided on the isolating switch transmission main shaft 402, and the isolating switch movable knife 403 cooperates with the isolating static contact 308 on the lower side of the disconnecting part and the grounding connection assembly 5.

[0074] In this embodiment, the isolating switch transmission main shaft 402 is made of PC / ABS synthetic material plastic injection molding with high strength, good toughness and stable insulation performance. The process groove 404 is designed to increase the creepage distance and strength between phases and relative to the ground to ensure that it meets the design requirements within a limited design space.

[0075] In this embodiment, the isolating switch transmission main shaft 402 includes a driving portion 4021 and a limiting portion 4022 integrally formed with the driving portion 4021 . The limiting portion 4022 defines a through hole 4023 , and the isolating switch movable blade 403 is sleeved in the through hole 4023 .

[0076] In this embodiment, a groove 4024 is provided on the driving portion 4021, and the groove 4024 is connected to the through hole 4023. One end of the isolating switch movable knife 403 cooperates with the isolating static contact 308 on the lower side of the breaking portion and the grounding connection assembly 5, and the other end is rotatably connected to one end of the branch busbar takeover 6. Preferably, pressure-adjusting springs 405 are fixedly provided between the two sides of the isolating switch movable knife 403 and the inner wall of the groove 4024 to adjust the pressure between the isolating switch movable knife 403 and the branch busbar takeover 6. Pressure-adjusting springs 405 are also provided on both sides of the top of the isolating switch movable knife 403 to adjust the pressure between the isolating switch movable knife 403 and the isolating static contact 308 on the lower side of the breaking portion and the grounding static contact 502 when in contact. The isolating switch movable knife 403 consists of two movable blades arranged in parallel.

[0077] The other end of the branch busbar connector 6 passes through the fixed copper connector 7 and is fixedly connected to it. The two ends of the fixed copper connector 7 are fixed on the metal frame assembly 1. The fixed copper connector 7 supports the first / second metal plates 1021, 1022. The squares in the fixed copper connector 7 are used to increase the phase-to-phase and relative creepage distances; the branch busbar connector 6 is used to connect the branch busbar outgoing line.

[0078] In this embodiment, the grounding assembly includes a grounding busbar 501 fixedly mounted on the disconnector support beam 103 , and a plurality of grounding static contacts 502 are provided on the grounding busbar 501 .

[0079] When in use, the vacuum interrupter switch 3 is connected to the circuit breaker operating mechanism through a breaking part dynamic fit 301 to drive a breaking part hexagonal transmission main shaft 302, thereby driving three breaking part support frames 310, three breaking part guide sets 304, three breaking part contact pull rods 305, three breaking part compression springs 306, and three breaking part vacuum interrupter chambers 307 to simultaneously open and close the three-phase busbars A, B, and C of the circuit breaker.

[0080] The isolating switch 4 is connected to the isolating operating mechanism through an isolating switch dynamic match 401, which drives an isolating switch transmission main shaft 402 to drive three isolating switch moving knives 403 and three isolating static contacts 308 on the lower side of the breaking part, three grounding static contacts 502, and one grounding bus 501 to simultaneously realize the closing, opening and grounding functions of the A, B, and C three-phase busbars.

[0081] The present invention adds a safe and reliable environmentally friendly gas switchgear to the electrical scheme of 10kV power grid distribution, making the electrical scheme of 10kV power grid distribution with environmentally friendly gas as the main insulation no longer a single one. It can be used as an incoming line circuit or an outgoing line circuit. At the same time, the switch with dry air as the main insulation has the characteristics of high safety, small size, high continuous operation, fast main insulation self-healing, strong breaking and closing capacity, strong environmental adaptability, low partial discharge, maintenance-free, and good economy. It fundamentally eliminates the dependence on SF6 gas and avoids the pollution of the atmosphere and harm to the human body caused by the emission or leakage of SF6 gas and its decomposition products due to the use of SF6 gas. It can be widely used in urban distribution networks, smart microgrids, commercial real estate, municipal engineering, light industry, residential communities and other power distribution fields.

[0082] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An environmentally friendly gas-insulated switch, characterized in that: The invention comprises a metal frame assembly (1), on which a partition assembly (2), a vacuum arc breaker switch (3), an isolating switch (4) and a grounding connection assembly (5) are arranged, wherein the vacuum arc breaker switch (3) is arranged directly above the isolating switch (4), and the grounding connection assembly (5) is arranged on one side of the isolating switch (4). By rotating the isolating switch (4), the isolating switch (4) is alternately matched with the vacuum arc breaker switch (3) and the grounding connection assembly (5), so as to realize closing, opening and grounding operations; The partition assembly (2) is distributed between the vacuum arc breaker switch (3) and the isolating switch (4) to increase the creepage distance between phases; The isolating switch (4) includes an isolating switch movable fitting (401) rotatably connected to the metal frame assembly (1); one end of the isolating switch movable fitting (401) is clamped and provided with an isolating switch transmission main shaft (402); and an isolating switch movable blade (403) is provided on the isolating switch transmission main shaft (402); The isolating switch transmission main shaft (402) comprises a driving portion (4021) and a limiting portion (4022) integrally formed with the driving portion (4021); a through hole (4023) is provided on the limiting portion (4022); and the isolating switch movable blade (403) is sleeved in the through hole (4023); The movable blade (403) of the isolating switch is rotatably connected to one end of the branch busbar connector (6), and the other end of the branch busbar connector (6) passes through the fixed copper connector (7) and is fixedly connected thereto. Both ends of the fixed copper connector (7) are fixed to the metal frame assembly (1); a grid is provided in the fixed copper connector (7).

2. The environmentally friendly gas-insulated switch according to claim 1, characterized in that: The metal frame assembly (1) includes an upper fixing frame (101) and a lower fixing frame (102), and the upper and lower fixing frames (101, 102) are connected via a partition assembly (2); A vacuum interrupter switch (3) is rotatably mounted on the upper fixing frame (101), and an isolating switch (4) is rotatably mounted on the lower fixing frame (102).

3. The environmentally friendly gas-insulated switch according to claim 2, characterized in that: The partition assembly (2) comprises a first partition (201) arranged on a lower fixing frame (102), and a second isolation plate (202) and a third isolation plate (203) arranged on both sides of the upper fixing frame (101), wherein a plurality of partition plates (204) are clamped in parallel between the second / third isolation plates (202, 203); The second / third isolation plate (202, 203) is also provided with a plurality of process holes.

4. The environmentally friendly gas-insulated switch according to claim 1, characterized in that: The vacuum interrupter switch (3) comprises a breaking part movable fitting (301) rotatably connected to a metal frame assembly (1); one end of the breaking part movable fitting (301) is engaged with a breaking part hexagonal transmission main shaft (302); and insulating spacers (303) and breaking part guide sleeves (304) are alternately arranged on the breaking part hexagonal transmission main shaft (302); A breaking part contact pull rod (305) is slidably arranged in the breaking part guide sleeve (304), a breaking part compression spring (306) is sleeved around the breaking part contact pull rod (305), a breaking part vacuum interrupting chamber (307) is arranged at one end of the breaking part contact pull rod (305) away from the breaking part guide sleeve (304), and a breaking part lower side isolating static contact (308) is arranged below the breaking part vacuum interrupting chamber (307).

5. The environmentally friendly gas-insulated switch according to claim 4, characterized in that: The breaking part guide sleeve assembly (304) comprises a first breaking part guide sleeve (3041) and a second breaking part guide sleeve (3042) which are arranged opposite to each other, a shaft sleeve (309) is sleeved between the first and second breaking part guide sleeves (3041, 3042), and a breaking part support frame (310) is sleeved on the shaft sleeve (309); The breaking portion support frame (310) is fixedly connected to the partition assembly (2).

6. The environmentally friendly gas-insulated switch according to claim 5, characterized in that: The breaking part contact pull rod (305) comprises a moving rod (3051) connected to the top of the breaking part vacuum interrupter (307), and a driving rod (3052) passing through the top of the moving rod (3051); a limiting groove (3053) is provided at the top of the moving rod (3051); The breaking portion support frame (310) comprises a cylinder (3101) sleeved on a shaft sleeve (309), a first support leg (3102) and a second support leg (3103) are integrally formed on both sides of the cylinder (3101), a clamping block (3104) is provided between the first / second support legs (3102, 3103), and the clamping block (3104) passes through the driving rod (3052) and is clamped in the limiting groove (3053).

7. The environmentally friendly gas-insulated switch according to claim 4, characterized in that: The movable knife (403) of the isolating switch cooperates with the isolating static contact (308) on the lower side of the breaking part and the grounding connection assembly (5).

8. The environmentally friendly gas-insulated switch according to claim 1, characterized in that: The isolating switch transmission main shaft (402) is made of PC / ABS synthetic material by injection molding, and a plurality of process grooves (404) are provided on the circumference.

9. The environmentally friendly gas-insulated switch according to claim 1, characterized in that: A groove (4024) is provided on the driving part (4021), and the groove (4024) is connected to the through hole (4023); one end of the isolating switch movable knife (403) cooperates with the isolating static contact (308) and the grounding connection assembly (5) on the lower side of the disconnecting part, and the other end is rotatably connected to one end of the branch busbar handle (6).

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