Compact partition insulated protection high-voltage switch cabinet

Abstract

The application relates to a compact partition insulation protection high-voltage switch cabinet, and relates to the technical field of switch cabinets. The switch cabinet comprises a main cabinet body, a partition frame is connected to the inner side of the main cabinet body, a main rotating rod is rotationally connected to the inner side of the partition frame through a bearing seat, a first screw rod is connected to the inner side of the partition frame through a bearing seat, and the first screw rod is connected with the main rotating rod through a bevel gear set. When maintenance is carried out, the main rotating rod is rotated, the main rotating rod drives the piston plate to move, the insulation gas on the inner side of the gas storage frame is input into the isolation frame, the maintenance cabinet is separated from the working cabinet through the insulation gas on the inner side of the isolation frame, and the workers are protected, the handcart is limited through the limiting block, the workers need to complete the insulation gas release first, then the moving operation of the handcart is carried out, the workers are prevented from forgetting the gas release operation, the safety is further improved, and the long-term green and low-carbon operation of the smart power grid equipment is ensured.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, specifically to a compact, partitioned, insulated, and protected high-voltage switchgear. Background Technology

[0002] High-voltage switchgear is a core and critical piece of equipment in the smart grid power transmission and distribution system. It is widely used in the entire process of power generation, transmission, distribution, power conversion, and energy consumption management. It mainly undertakes core functions such as circuit switching, operation control, and fault protection. It is an important basic equipment to support the low-carbon operation, energy conservation, and emission reduction of the power grid. Its equipment categories include high-voltage circuit breakers, high-voltage disconnect switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices, and high-voltage switchgear. The equipment adopts a modular structure design and is mainly composed of functional units such as main busbar compartment, circuit breaker compartment, cable compartment, relay and instrument compartment, cabinet top small busbar compartment, and secondary terminal compartment. It can meet the refined, intelligent, and low-energy consumption power distribution operation requirements of the smart grid.

[0003] Existing high-voltage switchgear adapted to smart grids mostly adopts a multi-cabinet splicing structure. During daily operation and maintenance, when a single cabinet fails, the faulty cabinet can be shut down for repair and maintenance, while the remaining adjacent cabinets remain energized. This ensures uninterrupted power supply to the smart grid distribution link and reduces energy consumption during grid outages. However, in actual operation and maintenance, there are multiple hidden energy transfer channels between adjacent energized cabinets and out-of-power maintenance cabinets. The strong electric field, grounding current, and fault potential difference generated during grid operation can easily break down the insulation medium through cabinet splicing gaps, weak insulation points, or spatial coupling effects. This safety hazard not only threatens the personal safety of operation and maintenance personnel but also leads to accelerated insulation aging of power distribution equipment, abnormally high operating energy consumption, damages the green and low-carbon operation system of the smart grid, and increases grid operation and maintenance energy consumption and carbon emissions.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a compact, partitioned, insulated, and protected high-voltage switchgear to solve the technical problem in the background art where, when a single cabinet of a high-voltage switchgear is damaged and requires maintenance, the adjacent cabinets are still in operation, and the adjacent energized cabinets may break down the insulation medium through splicing gaps, weak insulation points, or spatial coupling effects, discharging to the de-energized cabinets and personnel inside, posing a safety hazard. This invention provides a solution that is significantly different from the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a compact partitioned insulation protection high-voltage switchgear, comprising a main cabinet, a partition frame connected to the inner side of the main cabinet, a main rotating rod rotatably connected to the inner side of the partition frame via a bearing seat, a first screw connected to the inner side of the partition frame via a bearing seat, and the first screw connected to the main rotating rod via a bevel gear set, a piston rod threadedly connected to the first screw, an air storage frame connected to the inner side of the partition frame, and the air storage frame slidably connected to the piston rod, a piston plate connected to the inner end of the piston rod located in the air storage frame, and the piston plate slidably connected to the air storage frame, an isolation frame connected to the outer side of the main cabinet, and the isolation frame communicating with the air storage frame via a hose, a limit frame threadedly connected to the main rotating rod, and a limit block slidably connected to the inner side of the limit frame; A transmission assembly is disposed inside the partition frame.

[0007] Preferably, the transmission assembly includes a fixed frame connected above the partition frame, a toothed rod slidably connected to the inner side of the fixed frame and slidably connected to the partition frame, a second screw rotatably connected to the inner side of the fixed frame, a transmission gear connected to one end of the second screw, a pressing block slidably connected to the fixed frame and threadedly connected to the second screw, a connecting rod hinged to the bottom of the toothed rod and a transmission plate hinged to the other end of the connecting rod, a sealing frame connected to the inner side of the main cabinet body via a linkage structure, and a sealing plate slidably connected to the inner side of the sealing frame.

[0008] Preferably, the partition frame has a through hole, and one end of the main rotating rod is located at the through hole. The main rotating rod has a hexagonal groove at the end of the through hole. A limiting plate is provided on the inner side of the partition frame, and the limiting plate is in contact with the limiting frame.

[0009] Preferably, the piston plate is connected to a cylindrical rod, and the cylindrical rod is slidably connected to the gas storage frame.

[0010] Preferably, a first spring is connected to the inner side of the limiting frame, the first spring is connected to the limiting block, and a sliding rod is also connected to the inner side of the limiting frame, the sliding rod passes through the central hole of the first spring and is slidably connected to the limiting block.

[0011] Preferably, the partition frame has a sloping groove, and the limiting block has a sloping shape, and the angle of the sloping groove of the partition frame is complementary to the angle of the sloping surface of the limiting block.

[0012] Preferably, the sealing frame has a square hole, and the size of the square hole is larger than the size of the pressing block, and the sealing plate is provided with a sealing gasket.

[0013] Preferably, a guide rod is connected to the inner side of the partition frame, and the guide rod is slidably connected to the transmission plate.

[0014] Preferably, a second spring is connected to the inner side of the sealing frame, and the other end of the second spring is connected to the sealing plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, during maintenance, rotating the main rotating rod causes the piston plate to move, inputting the insulating gas inside the gas storage frame into the isolation frame. The insulating gas inside the isolation frame separates the maintenance cabinet from the work cabinet, thereby protecting the personnel. Furthermore, by setting a limit block to limit the handcart, the personnel must complete the release of insulating gas before moving the handcart, preventing the personnel from forgetting to release the gas, further improving safety, and thus ensuring the long-term green and low-carbon operation of smart grid equipment.

[0016] 2. In this invention, the main rotating rod will also drive the transmission plate to move during rotation. The movement of the transmission plate causes the pressing block to move. The movement of the pressing block pushes the sealing plate to fit against the partition frame partition, which can complete the sealing of the holes in the partition frame. Moreover, the way the sealing plate is stored and unfolded can avoid friction damage to the partition frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the top surface structure of the main cabinet of the present invention; Figure 3 This is a schematic diagram of the side structure of the partition frame of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram of part A in the diagram; Figure 5 This is a schematic diagram of the front structure of the partition frame of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part B in the diagram; Figure 7 This is a schematic diagram of the sealing plate and pressing block structure of the present invention; Figure 8 This is a schematic diagram showing the sealing plate and the pressing block after docking according to the present invention; Figure 9 This is a schematic diagram of the main cabinet assembly of the present invention.

[0018] In the diagram: 1. Main cabinet; 2. Partition frame; 3. Main rotating rod; 4. First screw; 5. Piston rod; 6. Air storage frame; 7. Isolation frame; 8. Limiting frame; 9. Limiting block; 10. Piston plate; 11. Transmission assembly; 111. Fixing frame; 112. Gear rack; 113. Second screw; 114. Transmission gear; 115. Pressing block; 116. Connecting rod; 117. Transmission plate; 118. Sealing frame; 119. Sealing plate. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0020] Please see Figures 1 to 9 This invention provides a technical solution: a compact partitioned insulation protection high-voltage switchgear, comprising a main cabinet 1, a partition frame 2 connected to the inner side of the main cabinet 1, a main rotating rod 3 rotatably connected to the inner side of the partition frame 2 via a bearing seat, a first screw 4 connected to the inner side of the partition frame 2 via a bearing seat, and the first screw 4 connected to the main rotating rod 3 via a bevel gear set, and a piston rod 5 threadedly connected to the first screw 4, a gas storage frame 6 connected to the inner side of the partition frame 2, and the gas storage frame 6 slidably connected to the piston rod 5, the gas storage frame 6 containing sulfur hexafluoride with a volume purity ≥99.9%, a piston plate 10 connected to the inner end of the piston rod 5 located in the gas storage frame 6, and the piston plate 10 slidably connected to the gas storage frame 6, and an isolation frame 7 connected to the outer side of the main cabinet 1, and the isolation frame 7 is open to the air intake. The hose is connected to the gas storage frame 6. The total volume of the isolation frame is about 3.85L to 5.75L. The main rotating rod 3 is threadedly connected to the limit frame 8. The limit frame 8 is slidably connected to the inner side of the limit block 9. During maintenance, the main rotating rod 3 is rotated, which drives the piston plate 10 to move and input the insulating gas inside the gas storage frame 6 into the isolation frame 7. After the sulfur hexafluoride is released into the isolation frame 7, the gas pressure is 0.01~0.02MPa. The insulating gas inside the isolation frame 7 separates the maintenance cabinet from the work cabinet, thereby protecting the staff. In addition, the limit block 9 limits the handcart, so that the staff must complete the release of insulating gas before moving the handcart, so as to avoid the staff forgetting to release the gas and further improve safety. Transmission assembly 11 is disposed inside the partition frame 2.

[0021] In one embodiment of the present invention, the transmission assembly 11 includes a fixed frame 111 connected above the partition frame 2. A gear 112 is slidably connected to the inner side of the fixed frame 111, and the gear 112 is slidably connected to the partition frame 2. A second screw 113 is rotatably connected to the inner side of the fixed frame 111. A transmission gear 114 is connected to one end of the second screw 113 located at the gear 112. A pressing block 115 is slidably connected to the fixed frame 111, and the pressing block 115 is threadedly connected to the second screw 113. A connecting rod 116 is hinged to the bottom of the gear 112. Furthermore, the other end of the connecting rod 116 is hinged to a transmission plate 117. The main cabinet 1 is connected to a sealing frame 118 via a linkage structure. The sealing plate 119 is slidably connected to the inner side of the sealing frame 118. During the rotation of the main rotating rod 3, the transmission plate 117 will also move. The movement of the transmission plate 117 causes the pressing block 115 to move. The movement of the pressing block 115 pushes the sealing plate 119 to adhere to the partition of the partition frame 2, which can seal the holes of the partition frame 2. The way the sealing plate 119 is stored and unfolded can avoid friction damage to the partition frame 2. In one embodiment of the present invention, the partition frame 2 has a through hole, and one end of the main rotating rod 3 is located at the through hole. The main rotating rod 3 has a hexagonal groove at the through hole end. A limiting plate is provided on the inner side of the partition frame 2, and the limiting plate is in contact with the limiting frame 8. The hexagonal groove allows the operator to rotate the main rotating rod 3 with tools. The limiting plate can limit the limiting frame 8, preventing the limiting frame 8 from rotating with the main rotating rod 3. In one embodiment of the present invention, the piston plate 10 is connected to a cylindrical rod, and the cylindrical rod is slidably connected to the gas storage frame 6. By providing the cylindrical rod, the piston plate 10 can be limited, thereby improving the stability of the piston plate 10 during its movement within the gas storage frame 6. In one embodiment of the present invention, a first spring is connected to the inner side of the limiting frame 8, and the first spring is connected to the limiting block 9. A sliding rod is also connected to the inner side of the limiting frame 8, and the sliding rod passes through the central hole of the first spring and is slidably connected to the limiting block 9. By providing the first spring, the limiting block 9 can be quickly pushed back to its initial height, and the sliding rod can limit the first spring, reducing the occurrence of deformation and misalignment of the first spring. As one embodiment of the present invention, the partition frame 2 is provided with a sloping groove, and the limiting block 9 is sloping in shape. The angle of the sloping groove of the partition frame 2 is complementary to the angle of the sloping surface of the limiting block 9. By providing the sloping groove, the limiting block 9 will be affected by the sloping groove to move vertically during horizontal movement. In one embodiment of the present invention, the sealing frame 118 has a square hole, and the size of the square hole is larger than the size of the pressing block 115. The sealing plate 119 is provided with a sealing gasket. The square hole allows the pressing block 115 to push the sealing plate 119 to move. In one embodiment of the present invention, a guide rod is connected to the inner side of the partition frame 2, and the guide rod is slidably connected to the transmission plate 117. By providing the guide rod, the transmission plate 117 can be limited, thereby improving the stability of the transmission plate 117 during its movement. In one embodiment of the present invention, a second spring is connected to the inner side of the sealing frame 118, and the other end of the second spring is connected to the sealing plate 119. By providing the second spring, the sealing plate 119 can be quickly pulled back to the initial position, reducing the wear between the sealing plate 119 and the partition frame 2.

[0022] Working principle: First, when maintenance is required on the main cabinet 1, insert the rotating tool into the hexagonal slot of the main rotating rod 3. Rotate the main rotating rod 3 with the tool. Since the main rotating rod 3 is threadedly connected to the limiting frame 8 and the limiting frame 8 is in contact with the limiting plate, the rotation of the main rotating rod 3 can drive the limiting frame 8 to move horizontally. The movement of the limiting frame 8 drives the limiting block 9 to move. The movement of the limiting block 9 separates it from the handcart above the partition frame 2, releasing the handcart lock. Since the limiting block 9 has a slanted shape, when the limiting block 9 moves to the slanted slot of the partition frame 2, it will move downward. The limiting block 9 moves downward and is stored inside the limiting frame 8. The limiting block 9 will eventually move to the side of the slanted slot of the partition frame 2 to avoid affecting the movement of the handcart. After the limiting block 9 is stored, use the tool to rotate the handcart screw synchronously. The rotation of the handcart screw drives the handcart to move. Secondly, since the main rotating rod 3 is connected to the first screw 4 through a bevel gear set, the rotation of the main rotating rod 3 will drive the first screw 4 to rotate. Since the first screw 4 is threadedly connected to the piston rod 5 and the piston rod 5 is slidably connected to the gas storage frame 6, the rotation of the first screw 4 will drive the piston rod 5 to move towards the gas storage frame 6. The movement of the piston rod 5 will push the piston plate 10 to move. Since the gas storage frame 6 is connected to the isolation frame 7 through a hose, the piston plate 10 will input insulating gas into the isolation frame 7 during its movement, which is highly safe. During the movement of the handcart, the sealing frame 118 will be driven to move vertically through the linkage structure inside the main cabinet 1. The sealing frame 118 moves vertically to the hole position. Then, since the main rotating rod 3 is threadedly connected to the transmission plate 117 and the transmission plate 117 is slidably connected to the guide rod, the rotation of the main rotating rod 3 will drive the transmission plate 117 to move. Since the transmission plate 117 is hinged to the connecting rod 116 and the connecting rod 116 is hinged to the rack 112, the movement of the transmission plate 117 will drive the rack 112 to move vertically. The vertical movement of the rack 112 will mesh with the transmission gear 114. After the rack 112 meshes with the transmission gear 114, its downward movement will drive the transmission gear 114 to rotate. The rotation of the transmission gear 114 will drive the second screw 113 to rotate. Since the second screw 113 is threadedly connected to the pressing block 115 and the pressing block 115 is slidably connected to the fixed frame 111, the rotation of the second screw 113 will drive the pressing block 115 to move. The movement of the pressing block 115 will push the sealing plate 119 to the position of the hole in the partition frame 2 through the square hole of the sealing frame 118 for sealing. Finally, when the handcart moves to the cabinet door position, all the insulating gas inside the gas storage frame 6 will be introduced into the isolation frame 7. The insulating gas inside the isolation frame 7 will separate and insulate the individual cabinets, making it easier for staff to maintain the individual cabinets. After maintenance, the handcart screw and the main rotating rod 3 are rotated in opposite directions simultaneously using tools. The rotation of the main rotating rod 3 drives the transmission plate 117 to move. The movement of the transmission plate 117 causes the pressing block 115 to separate from the sealing plate 119. The sealing plate 119 will be stored in the sealing frame 119 under the influence of the second spring. In step 8, when the handcart moves to the middle position, the sealing frame 118 will move upward through the linkage structure of the main cabinet 1 to avoid the sealing frame 118 affecting the connection between the handcart and the inner wiring of the main cabinet 1. In addition, during the reverse rotation of the main rotating rod 3, the piston plate 10 will move in the reverse direction. The reverse movement of the piston plate 10 will generate negative pressure inside the gas storage frame 6. After the negative pressure is generated inside the gas storage frame 6, the insulating gas inside the isolation frame 7 will be drawn into the gas storage frame 6 through the hose. The gas is stored in the gas storage frame 6 for subsequent use.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A compact partitioned insulation protection high-voltage switchgear, comprising a main cabinet (1), characterized in that: The main cabinet (1) is connected to a partition frame (2) on its inner side. The partition frame (2) is rotatably connected to a main rotating rod (3) through a bearing seat on its inner side. The partition frame (2) is connected to a first screw (4) through a bearing seat on its inner side. The first screw (4) is connected to the main rotating rod (3) through a bevel gear set. The first screw (4) is threadedly connected to a piston rod (5). The partition frame (2) is connected to an air storage frame (6) on its inner side. The air storage frame (6) is slidably connected to the piston rod (5). The piston rod (5) is connected to a piston plate (10) at the inner end of the air storage frame (6). The piston plate (10) is slidably connected to the air storage frame (6). The main cabinet (1) is connected to an isolation frame (7) on its outer side. The isolation frame (7) is connected to the air storage frame (6) through a hose. The main rotating rod (3) is threadedly connected to a limit frame (8). The limit frame (8) is slidably connected to a limit block (9) on its inner side. Transmission assembly (11), wherein the transmission assembly (11) is disposed inside the partition frame (2); The transmission assembly (11) includes a fixed frame (111) connected above the partition frame (2). A gear (112) is slidably connected to the inside of the fixed frame (111), and the gear (112) is slidably connected to the partition frame (2). A second screw (113) is rotatably connected to the inside of the fixed frame (111). A transmission gear (114) is connected to one end of the gear (112) of the second screw (113). A pressing block (115) is slidably connected to the fixed frame (111), and the pressing block (115) is threadedly connected to the second screw (113). A connecting rod (116) is hinged to the bottom of the gear (112), and a transmission plate (117) is hinged to the other end of the connecting rod (116). A sealing frame (118) is connected to the inner linkage structure of the main cabinet (1), and a sealing plate (119) is slidably connected to the inner side of the sealing frame (118).

2. The compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: The partition frame (2) has a through hole, and one end of the main rotating rod (3) is located at the through hole. The main rotating rod (3) has a hexagonal groove at the through hole end. A limiting plate is provided inside the partition frame (2), and the limiting plate is in contact with the limiting frame (8).

3. A compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: The piston plate (10) is connected to a cylindrical rod, and the cylindrical rod is slidably connected to the gas storage frame (6).

4. A compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: The inner side of the limiting frame (8) is connected to a first spring, which is connected to the limiting block (9). The inner side of the limiting frame (8) is also connected to a sliding rod, which passes through the central hole of the first spring and is slidably connected to the limiting block (9).

5. A compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: The partition frame (2) has a sloping groove, and the limiting block (9) has a sloping shape. The angle of the sloping groove of the partition frame (2) is complementary to the angle of the sloping surface of the limiting block (9).

6. A compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: The sealing frame (118) has a square hole, and the size of the square hole is larger than the size of the pressing block (115). The sealing plate (119) is provided with a sealing gasket.

7. A compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: The inner side of the partition frame (2) is connected to a guide rod, and the guide rod is slidably connected to the transmission plate (117).

8. A compact partitioned insulation protection high-voltage switchgear according to claim 1, characterized in that: A second spring is connected to the inner side of the sealing frame (118), and the other end of the second spring is connected to the sealing plate (119).

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