Compact permanent magnet driving vacuum circuit breaker

Abstract

The invention discloses a compact permanent magnet driven vacuum circuit breaker, and belongs to the technical field of vacuum circuit breakers. The compact permanent magnet driven vacuum circuit breaker comprises a circuit breaker shell, sliding rails are in threaded connection with the inner walls of the two ends of the circuit breaker shell, reset assemblies are arranged on the inner sides of one ends of the sliding rails, screw rods are arranged in the sliding rails, one ends of the screw rods penetrate through the sliding rails and are welded with transmission gears, sliding blocks are installed on the sliding rails in a sliding mode, and the transmission gears are welded to the sliding blocks. And the sliding block is in threaded connection with the screw rod, and the outer wall of the sliding block is in threaded connection with an air exhaust frame. The permanent magnet vacuum circuit breaker effectively solves the problems that in the prior art, after the permanent magnet vacuum circuit breaker is continuously electrified and works, a large amount of heat is generated and gathered in the permanent magnet vacuum circuit breaker, and the heat in the permanent magnet vacuum circuit breaker cannot be dissipated in time due to the fact that an existing permanent magnet vacuum circuit breaker cannot effectively dissipate heat; and the circuit and parts in the permanent magnet vacuum circuit breaker can be damaged, so that the service life of the permanent magnet vacuum circuit breaker is greatly shortened.

Description

Technical Field

[0001] This invention relates to the field of vacuum circuit breaker technology, and more particularly to a compact permanent magnet driven vacuum circuit breaker. Background Technology

[0002] Vacuum circuit breakers are high-voltage switchgear that uses high vacuum as an arc-extinguishing and insulating medium. They are characterized by small size, long life, and maintenance-free operation, and are widely used in power system protection and control. Permanent magnet driven vacuum circuit breakers are high-voltage switchgear that uses a permanent magnet operating mechanism to replace the traditional spring or electromagnetic mechanism. Their core feature is that the permanent magnet provides holding force to achieve opening and closing operations, combining the high efficiency of vacuum arc-extinguishing technology with the reliability of a permanent magnet mechanism.

[0003] A search revealed an existing technology (publication number: CN113707492A) for a high-voltage permanent magnet vacuum circuit breaker. The paper describes a circuit breaker that "includes a main frame, side plates erected on both sides of the main frame, multiple pole posts arranged above the rear side of the main frame, contacts arranged within the pole posts, a contact drive shaft extending from the bottom of the pole posts to actuate the contacts, and a main shaft rotatably arranged below the pole posts. The contact drive shaft is movably connected to the main shaft. The key feature is that a leaf spring is arranged on the front side of the main shaft to drive its rotation, with the rear end of the leaf spring connected to the main shaft; a swing mechanism is arranged on one side of the leaf spring to drive its rotation and deformation, and the swing mechanism is rotatably mounted on the side plate." This technology uses the deformation of the leaf spring to drive the main shaft to rotate, ultimately achieving closing through the spring force of the leaf spring. Compared to traditional manual closing devices, it has the advantages of simple structure and small space occupation.

[0004] However, under continuous energization, existing permanent magnet vacuum circuit breakers generate and accumulate a large amount of heat inside. Since current permanent magnet vacuum circuit breakers cannot effectively dissipate heat, this heat cannot be dissipated in time, causing damage to the internal wiring and components and significantly shortening their service life. Therefore, there is an urgent need for a compact permanent magnet driven vacuum circuit breaker with optimized heat dissipation. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that in existing designs, after continuous operation under power, a large amount of heat is generated and accumulated inside the permanent magnet vacuum circuit breaker. The existing permanent magnet vacuum circuit breakers cannot effectively dissipate heat, resulting in the heat inside the permanent magnet vacuum circuit breaker not being able to dissipate in time, which will damage the internal circuits and components of the permanent magnet vacuum circuit breaker and greatly shorten its service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A compact permanent magnet driven vacuum circuit breaker includes a circuit breaker housing. Both ends of the inner wall of the circuit breaker housing are threadedly connected to slide rails, and a reset assembly is provided on the inner side of one end of each slide rail. A screw is located inside the slide rail, and one end of the screw passes through the slide rail and is welded to a transmission gear. A slider is slidably mounted on the slide rail, and the slider is threadedly connected to the screw. An air extraction frame is threadedly connected to the outer wall of the slider, and air extraction pipes are threadedly installed at the top and bottom of the air extraction frame. Several air extraction holes are evenly spaced on the air extraction pipes. A motor is threadedly connected to one side of the circuit breaker housing, and a transmission block is welded to the output end of the motor. Sector gears are welded to both sides of the transmission block, and two sector gears are respectively connected to two transmission gears. The wheels mesh with each other. A guide rail is threadedly connected to the inner wall of one side of the circuit breaker housing, and a guide rod is threadedly connected to the inner wall of the guide rail. A moving block is slidably installed inside the guide rail and is sleeved on the guide rod. A toothed plate is welded to the outer wall of the moving block. A return spring is sleeved on one end of the guide rod, and one end of the return spring is in contact with the outer wall of the moving block. The other end of the return spring is in contact with the inner wall of the guide rail. A traction rope is riveted to one side of the toothed plate. A ventilation opening is opened on the outer wall of one end of the circuit breaker housing, and a sliding groove is opened on both sides of the inner wall of the ventilation opening. A pulley is slidably installed inside the sliding groove, and a scraper is threadedly connected between the two pulleys. A filter screen is installed inside the ventilation opening.

[0007] Preferably, one side of the scraper is in contact with the outer wall of the filter screen, and the end of the traction rope away from the toothed plate extends into the groove and is threadedly connected and fixed to the top of the pulley.

[0008] Preferably, a limiting sleeve is fitted on the guide rod, and the limiting sleeve is made of rubber material, and the limiting sleeve is located on one side of the moving block.

[0009] Preferably, bases are welded to both sides of the bottom of the circuit breaker housing, and ventilation slots are provided inside the bases. Partitions are welded inside the ventilation slots. An exhaust fan is threaded to one end of the base. A first connecting pipe is inserted into one of the partitions, and the other end of the first connecting pipe passes through the circuit breaker housing and is connected to a first pair of connecting pipes. A first corrugated telescopic pipe is inserted into the other end of the first pair of connecting pipes, and the other end of the first corrugated telescopic pipe is connected to one of the exhaust brackets. A second connecting pipe is inserted into the other partition, and the other end of the second connecting pipe passes through the circuit breaker housing and is connected to a second pair of connecting pipes. A second corrugated telescopic pipe is inserted into the other end of the second pair of connecting pipes, and the other end of the second corrugated telescopic pipe is connected to another exhaust bracket.

[0010] Preferably, the circuit breaker housing is provided with a permanent magnet drive device body inside, a breaking spring switch body inside, and a vacuum interrupter chamber at the other end of the circuit breaker housing.

[0011] Preferably, the top end face of the circuit breaker housing is provided with an energy storage tank, and an inverter is threadedly connected to the top of the energy storage tank. A photovoltaic panel is provided above the top of the energy storage tank, and the photovoltaic panel is electrically connected to the inverter.

[0012] Preferably, the battery storage tank is threaded with electric push rods on all four sides, and the telescopic ends of the four electric push rods are respectively hinged to the four corners of the photovoltaic panel. The bottom of the circuit breaker housing is threaded with a battery. The inverter is equipped with wires, and the other end of the wires is electrically connected to the battery.

[0013] Preferably, the toothed plate is located above the top of the transmission block, and the tooth grooves of the toothed plate are located at its bottom.

[0014] Preferably, the reset assembly includes a reset frame, a spring, a central shaft, and a connecting tube. The reset frame is threadedly fixed to the inner wall of one end of the slide rail, and a spring is provided inside the reset frame. The central shaft is rotatably mounted in the center of the spring. The connecting tube is fused to the outer wall of the reset frame, and the other end of the screw extends into the connecting tube. One end of the central shaft extends into the connecting tube and is welded to the screw.

[0015] Preferably, the partition is made of stainless steel, the exhaust fan is threaded with a dustproof net at its outlet, and another exhaust bracket is located in the center of the slide rail.

[0016] Compared with the prior art, the present invention provides a compact permanent magnet driven vacuum circuit breaker, which has the following advantages:

[0017] 1. This invention uses a motor-driven transmission block to rotate two sector gears, which in turn drive a transmission gear. When the transmission gear rotates, it synchronously drives a screw, causing a slider to move within a slide rail, thus adjusting the position of the air extraction frame. Simultaneously, the screw rotation also winds a spring via a central shaft. When the transmission block rotates, separating the sector gears from the transmission gear, the spring drives the screw to rotate in the opposite direction, causing the slider to reset the air extraction frame. This allows for heat dissipation and cooling at different locations inside the circuit breaker housing. After separating from the transmission gear, the sector gears mesh with the toothed grooves of a gear plate, and under force, push a moving block along the guide rail, compressing the reset spring. When the gear plate moves, a traction rope pulls a pulley upwards within the slide groove. After the plate separates, it will re-engage with the transmission gear. At the same time, after the force is lost, the return spring will release the tension and push the moving block and toothed plate to reset. The traction rope will drive the pulley to move down. The continuous up and down movement of the pulley can make the scraper remove the debris filtered out of the filter screen, thereby ensuring the ventilation effect of the vent and improving the heat dissipation effect. By starting the exhaust fan, the exhaust pipe on the exhaust frame can draw in the high temperature inside the circuit breaker casing. The high temperature will be discharged to the outside through the exhaust fan outlet, thereby achieving a cooling effect. This can prevent the temperature inside the circuit breaker casing from getting too high, and thus prevent the generation and accumulation of a large amount of heat inside the permanent magnet vacuum circuit breaker after continuous power-on operation. It can also accelerate the dissipation of heat inside the permanent magnet vacuum circuit breaker, reduce damage to the internal circuits and components of the permanent magnet vacuum circuit breaker, and increase the service life of the permanent magnet vacuum circuit breaker.

[0018] 2. The heat dissipation structure of the present invention is concentrated within the circuit breaker housing. While achieving heat dissipation, it maintains overall compactness, reduces the overall size of the equipment, and facilitates improved usability. The inverter converts the light energy absorbed by the photovoltaic panel into electrical energy and stores it in the battery through wires, thereby reducing energy consumption and improving environmental friendliness. The electric push rod can adjust the angle and position of the photovoltaic panel, which is conducive to better absorption of light energy by the photovoltaic panel and improves the power conversion rate. Attached Figure Description

[0019] Figure 1 This is an overall isometric view of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the circuit breaker housing of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 3 This is a schematic diagram of the sector gear structure of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 4 This is a schematic diagram of the bottom structure of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 5 This is an overall cross-sectional view of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 6 for Figure 5 Enlarged view of the structure at point A; Figure 7 This is an overall vertical sectional view of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 8 This is a cross-sectional view of the reset assembly of the compact permanent magnet driven vacuum circuit breaker proposed in this invention; Figure 9 This is a cross-sectional view of the energy storage tank of the compact permanent magnet driven vacuum circuit breaker proposed in this invention.

[0020] Drawing Nomenclature: 1. Circuit breaker housing; 2. Slide rail; 3. Reset assembly; 301. Reset frame; 302. Clock spring; 303. Central shaft; 304. Connecting pipe; 4. Screw; 5. Transmission gear; 6. Slider; 7. Evacuation frame; 8. Evacuation pipe; 9. Evacuation port; 10. Motor; 11. Transmission block; 12. Sector gear; 13. Guide rail; 14. Guide rod; 15. Moving block; 16. Gear plate; 17. Reset spring; 18. Traction rope; 19. Vent; 20. Slide groove; 21. Pulley; 22. Scraper 23. Filter screen; 24. Limiting sleeve; 25. Base; 26. Ventilation slot; 27. Partition plate; 28. Exhaust fan; 29. ​​First connecting pipe; 30. First connecting pipe; 31. First corrugated telescopic pipe; 32. Second connecting pipe; 33. Second connecting pipe; 34. Second corrugated telescopic pipe; 35. Dustproof net; 36. Main body of permanent magnet drive device; 37. Main body of disconnecting spring switch; 38. Vacuum interrupter chamber; 39. Energy storage tank; 40. Inverter; 41. Photovoltaic panel; 42. Electric push rod; 43. Storage battery; 44. Wire. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1: Please see Figure 1-8A compact permanent magnet driven vacuum circuit breaker includes a circuit breaker housing 1. Both ends of the inner wall of the circuit breaker housing 1 are threadedly connected to slide rails 2. A reset assembly 3 is provided on the inner side of one end of each slide rail 2. A screw 4 is located inside the slide rail 2, and one end of the screw 4 passes through the slide rail 2 and is welded with a transmission gear 5. A slider 6 is slidably mounted on the slide rail 2, and the slider 6 is threadedly connected to the screw 4. A vacuum frame 7 is threadedly connected to the outer wall of the slider 6, and vacuum pipes 8 are threadedly installed at the top and bottom of the vacuum frame 7. Several vacuum holes 9 are equidistantly opened on the vacuum pipes 8. A motor 10 is threadedly connected to one side of the circuit breaker housing 1, and a transmission block 11 is welded to the output end of the motor 10. Sector gears 12 are welded to both sides of the transmission block 11, and the two sector gears 12 mesh with two transmission gears 5 respectively. A guide rail 13 is threadedly connected to the inner wall of one side of the circuit breaker housing 1, and a guide rod 14 is threadedly connected to the inside of the guide rail 13. A moving block 15 is slidably installed inside the guide rail 13 and is sleeved on the guide rod 14. A toothed plate 16 is welded to the outer wall of the moving block 15. A return spring 17 is sleeved on one end of the guide rod 14. One end of the positioning spring 17 is attached to the outer wall of the moving block 15, and the other end of the return spring 17 is attached to the inner wall of the guide rail 13. A traction rope 18 is riveted to one side of the toothed plate 16. A ventilation opening 19 is provided on the outer wall of one end of the circuit breaker housing 1, and a sliding groove 20 is provided on both sides of the inner wall of the ventilation opening 19. A pulley 21 is slidably installed inside the sliding groove 20, and a scraper 22 is threaded between the two pulleys 21. A filter screen 23 is provided inside the ventilation opening 19, and one side of the scraper 22 is attached to the outer wall of the filter screen 23. The end of the traction rope 18 away from the toothed plate 16 extends to the sliding groove 13. The reset assembly 3 includes a reset frame 301, a spring 302, a central shaft 303, and a connecting tube 304. The reset frame 301 is threadedly connected to the inner wall of one end of the slide rail 2, and the spring 302 is provided inside the reset frame 301. The central shaft 303 is rotatably mounted in the center of the spring 302. The connecting tube 304 is fused to the outer wall of the reset frame 301, and the other end of the screw 4 extends into the connecting tube 304. One end of the central shaft 303 extends into the connecting tube 304 and is welded to the screw 4. The motor 10 drives the transmission block 11, causing the two sector gears 12 to rotate. The sector gears 12 then drive the transmission gear 5 to rotate. When the transmission gear 5 rotates, it synchronously drives the screw 4 to rotate. The rotation of the screw 4 causes the slider 6 to move within the slide rail 2, thereby adjusting the position of the suction frame 7. Simultaneously, the rotation of the screw 4 also winds the spring 302 via the central shaft 303. When the transmission block 11 rotates, causing the sector gears 12 to separate from the transmission gear 5, the spring 302 drives the screw 4 to rotate in the opposite direction, causing the slider 6 to move the suction frame 7 back to its original position. After separating from the transmission gear 5, the sector gears 12 will... The toothed plates 16 mesh with each other and, under the action of force, can push the moving block 15 to move on the guide rail 13 and squeeze the return spring 17. When the toothed plates 16 move, the traction rope 18 can pull the pulley 21 to move upward in the groove 20. When the sector gear 12 separates from the toothed plates 16, it will re-mesh with the transmission gear 5. At the same time, after the force is lost, the return spring 17 will release the tension and push the moving block 15 and the toothed plates 16 to return to their original positions. The traction rope 18 will drive the pulley 21 to move downward. By using the continuous up and down movement of the pulley 21, the scraper 22 can scrape off the debris filtered out of the filter screen 23, thereby ensuring the ventilation effect of the vent 19.

[0023] Example 2: Please see Figure 1-79. A difference from Embodiment 1 is that a limiting sleeve 24 is fitted onto the guide rod 14, and the limiting sleeve 24 is made of rubber material. The limiting sleeve 24 is located on one side of the moving block 15. Bases 25 are welded to both sides of the bottom of the circuit breaker housing 1, and ventilation slots 26 are provided inside the bases 25. Partitions 27 are welded inside the ventilation slots 26. An exhaust fan 28 is threaded to one end of the base 25. A first connecting pipe 29 is inserted into one of the partitions 27, and the other end of the first connecting pipe 29... A first pair of connecting pipes 30 is inserted through the circuit breaker housing 1 at one end, and a first corrugated expansion pipe 31 is inserted at the other end of the first pair of connecting pipes 30. The other end of the first corrugated expansion pipe 31 is connected to one of the air extraction brackets 7. A second connecting pipe 32 is inserted into another partition 27, and the other end of the second connecting pipe 32 passes through the circuit breaker housing 1 and is inserted into a second pair of connecting pipes 33. The other end of the second pair of connecting pipes 33 is inserted into a second corrugated expansion pipe 34, and the other end of the second corrugated expansion pipe 34 is connected to another... The exhaust bracket 7 is plugged in and connected. The circuit breaker housing 1 contains a permanent magnet drive unit 36 ​​and a tripping spring switch unit 37. A vacuum interrupter 38 is located at the other end of the circuit breaker housing 1. An energy storage tank 39 is opened on the top face of the circuit breaker housing 1, and an inverter 40 is threadedly connected to the top of the energy storage tank 39. A photovoltaic panel 41 is located above the top of the energy storage tank 39, and the photovoltaic panel 41 is electrically connected to the inverter 40. Electric actuators are threadedly connected to all four sides of the energy storage tank 39. The rod 42, and the telescopic ends of the four electric push rods 42 are respectively hinged to the four corners of the photovoltaic panel 41. The bottom of the circuit breaker housing 1 is threaded with a storage battery 43. The inverter 40 is provided with a wire 44, and the other end of the wire 44 is electrically connected to the storage battery 43. The toothed plate 16 is located above the top of the transmission block 11, and the tooth groove of the toothed plate 16 is located at its bottom. The partition 27 is made of stainless steel. The exhaust end of the exhaust fan 28 is threaded with a dustproof net 35. Another exhaust bracket 7 is located in the center of the slide rail 2. The limit sleeve 24 can be used to restrict the reset position of the moving block 15. By starting the exhaust fan 28, negative pressure can be generated in the ventilation slot 26. The first connecting pipe 29, the first connecting pipe 30, the first corrugated telescopic pipe 31, the second connecting pipe 32, the second connecting pipe 33, and the second corrugated telescopic pipe 34 can generate suction in both exhaust frames 7. The exhaust pipe 8 on the exhaust frame 7 can suck up the high temperature inside the circuit breaker housing 1. The high temperature will be discharged to the outside through the exhaust fan 28. The inverter 40 can convert the light energy absorbed by the photovoltaic panel 41 into electrical energy and store the electrical energy in the battery 43 through the wire 44. The battery 43 is equipped with a battery management system (BMS) and an energy management system (EMS). The battery 43 is used to power the motor 10, the exhaust fan 28, and the electric push rod 42. The angle position of the photovoltaic panel 41 can be adjusted by the electric push rod 42.

[0024] The motor 10, exhaust fan 28, permanent magnet drive unit 36, spring switch 37, vacuum interrupter 38, inverter 40, photovoltaic panel 41, and electric push rod 42 used in this invention are all existing mature technologies. Furthermore, the electrical equipment is comprehensively controlled by an external controller, so they will not be described in detail below. In use, the motor 10 drives the transmission block 11, causing the two sector gears 12 to rotate. The sector gears 12 then drive the transmission gear 5 to rotate. When the transmission gear 5 rotates, it synchronously drives the screw 4 to rotate. The rotation of the screw 4 causes the slider 6 to move within the slide rail 2, thereby adjusting the position of the exhaust frame 7. Simultaneously, the rotation of screw 4 also winds the spring 302 via the central shaft 303. When the transmission block 11 rotates, causing the sector gear 12 to separate from the transmission gear 5, the spring 302 drives the screw 4 to rotate in the opposite direction, thereby causing the slider 6 to drive the vacuum frame 7 to reset. After the sector gear 12 separates from the transmission gear 5, it meshes with the tooth groove of the toothed plate 16 and, under the action of force, can push the moving block 15 to move on the guide rail 13 and squeeze the reset spring 17. When the toothed plate 16 moves, the traction rope 18 can pull the pulley 21 to move upward in the groove 20. After the sector gear 12 separates from the toothed plate 16, it will re-engage with the transmission gear 5. When gear 5 meshes, and the force is lost, the return spring 17 releases tension and pushes the moving block 15 and the toothed plate 16 back to their original positions. The traction rope 18 drives the pulley 21 to move downwards. By continuously moving the pulley 21 up and down, the scraper 22 can scrape away the debris filtered from the filter screen 23, thus ensuring the ventilation effect of the vent 19. The limit sleeve 24 can restrict the reset position of the moving block 15. By starting the exhaust fan 28, a negative pressure can be generated in the ventilation slot 26. The first connecting pipe 29, the first connecting pipe 30, the first corrugated telescopic pipe 31, the second connecting pipe 32, the second connecting pipe 33, and the second corrugated telescopic pipe 34 can respectively... The suction force is generated in both exhaust frames 7. The exhaust pipes 8 on the exhaust frames 7 can be used to draw out the high temperature inside the circuit breaker housing 1. The high temperature is discharged to the outside through the exhaust fan 28, thereby achieving a cooling effect and preventing the temperature inside the circuit breaker housing 1 from becoming too high. The inverter 40 can convert the light energy absorbed by the photovoltaic panel 41 into electrical energy and store the electrical energy in the battery 43 through the wire 44. The battery 43 is equipped with a battery management system (BMS) and an energy management system (EMS). The battery 43 is used to power the motor 10, the exhaust fan 28 and the electric push rod 42. The angle and position of the photovoltaic panel 41 can be adjusted by the electric push rod 42.

[0025] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of this template.

[0026] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A compact permanent magnet driven vacuum circuit breaker, comprising a circuit breaker housing (1), characterized in that: The inner walls of both ends of the circuit breaker housing (1) are threaded with slide rails (2), and a reset assembly (3) is provided on the inner side of one end of the slide rail (2). The slide rail (2) is provided with a screw (4), and one end of the screw (4) passes through the slide rail (2) and is welded with a transmission gear (5). A slider (6) is slidably installed on the slide rail (2), and the slider (6) is threadedly connected to the screw (4). The outer wall of the slider (6) is threadedly connected with an air extraction frame (7), and air extraction pipes are threadedly installed on the top and bottom of the air extraction frame (7). (8) Several air extraction holes (9) are equally spaced on the air extraction pipe (8). A motor (10) is threadedly connected to one side of the circuit breaker housing (1), and a transmission block (11) is welded to the output end of the motor (10). Sector gears (12) are welded to both sides of the transmission block (11), and the two sector gears (12) mesh with the two transmission gears (5) respectively. A guide rail (13) is threadedly connected to the inner wall of one side of the circuit breaker housing (1), and a guide rod (14) is threadedly connected to the inside of the guide rail (13).

2. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: A movable block (15) is slidably installed inside the guide rail (13), and the movable block (15) is sleeved on the guide rod (14). A toothed plate (16) is welded to the outer wall of the movable block (15). A return spring (17) is sleeved on one end of the guide rod (14), and one end of the return spring (17) is in contact with the outer wall of the movable block (15). The other end of the return spring (17) is in contact with the inner wall of the guide rail (13). A traction rope (18) is riveted to one side of the toothed plate (16). A vent (19) is opened on the outer wall of one end of the circuit breaker housing (1), and a sliding groove (20) is opened on both sides of the inner wall of the vent (19). A pulley (21) is slidably installed inside the sliding groove (20), and a scraper (22) is threaded between the two pulleys (21). A filter screen (23) is provided inside the vent (19).

3. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: One side of the scraper (22) is attached to the outer wall of the filter screen (23), and the end of the traction rope (18) away from the toothed plate (16) extends into the groove (20) and is threadedly connected to the top of the pulley (21); a limiting sleeve (24) is fitted on the guide rod (14), and the limiting sleeve (24) is made of rubber material, and the limiting sleeve (24) is located on one side of the moving block (15).

4. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: The circuit breaker housing (1) has bases (25) welded to both sides of its bottom. Ventilation slots (26) are provided inside the bases (25), and partitions (27) are welded inside the ventilation slots (26). A fan (28) is threaded to one end of the base (25). A first connecting pipe (29) is inserted into one of the partitions (27), and the other end of the first connecting pipe (29) penetrates the circuit breaker housing (1) and is connected to a first pair of connecting pipes (30). The other end of the first pair of connecting pipes (30)... One end is connected to a first corrugated telescopic tube (31), and the other end of the first corrugated telescopic tube (31) is connected to one of the air extraction brackets (7). The other partition (27) is connected to a second connecting tube (32), and the other end of the second connecting tube (32) passes through the circuit breaker housing (1) and is connected to a second pair of connecting pipes (33). The other end of the second pair of connecting pipes (33) is connected to a second corrugated telescopic tube (34), and the other end of the second corrugated telescopic tube (34) is connected to another air extraction bracket (7).

5. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: The circuit breaker housing (1) is provided with a permanent magnet drive device body (36) inside, the circuit breaker housing (1) is provided with a breaking spring switch body (37) inside, and a vacuum interrupter chamber (38) is provided at the other end of the circuit breaker housing (1).

6. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: The circuit breaker housing (1) has an energy storage tank (39) on its top end face, and an inverter (40) is threadedly connected to the top of the energy storage tank (39). A photovoltaic panel (41) is provided above the top of the energy storage tank (39), and the photovoltaic panel (41) is electrically connected to the inverter (40).

7. The compact permanent magnet driven vacuum circuit breaker according to claim 6, characterized in that: The battery storage tank (39) is threaded with electric push rods (42) around its perimeter, and the telescopic ends of the four electric push rods (42) are respectively hinged to the four corners of the photovoltaic panel (41). The bottom of the circuit breaker housing (1) is threaded with a battery (43). The inverter (40) is provided with wires (44), and the other end of the wires (44) is electrically connected to the battery (43).

8. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: The toothed plate (16) is located above the top of the transmission block (11), and the tooth groove of the toothed plate (16) is located at its bottom.

9. The compact permanent magnet driven vacuum circuit breaker according to claim 1, characterized in that: The reset assembly (3) includes a reset frame (301), a spring (302), a central shaft (303), and a connecting tube (304). The reset frame (301) is threadedly connected to the inner wall of one end of the slide rail (2), and the spring (302) is provided inside the reset frame (301). The central shaft (303) is rotatably mounted in the center of the spring (302). The connecting tube (304) is welded to the outer wall of the reset frame (301), and the other end of the screw (4) extends into the connecting tube (304). One end of the central shaft (303) extends into the connecting tube (304) and is welded to the screw (4).

10. The compact permanent magnet driven vacuum circuit breaker according to claim 4, characterized in that: The partition (27) is made of stainless steel, and the exhaust end of the exhaust fan (28) is threaded with a dustproof net (35). Another exhaust bracket (7) is located in the center of the slide rail (2).

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