A high protection grade outdoor circuit breaker

Abstract

The application discloses a high-protection-grade outdoor circuit breaker and relates to the technical field of circuit breakers. The support porcelain cylinder is connected with an assembled porcelain tube at the top of two sides, the top of the assembled porcelain tube is connected with a sealed porcelain box, the inside of the assembled porcelain tube is fixedly provided with a sliding cylinder, the inside of the sliding cylinder is slidably connected with a sliding pull rod, the inside of the sealed porcelain box is fixedly provided with an annular air bag, the other end of the limiting pull rod penetrates through the middle of the annular air bag and is connected with an extrusion plate, and the vacuum porcelain cylinder is provided with a jet riser on two sides. The circuit breaker in the service life guarantee assembly can quickly remove the heat generated by the opening and closing and can clean the dust on the insulating porcelain cylinder, so that the operation stability of the circuit breaker can be fully guaranteed in high-temperature weather and rainy and snowy weather. The reinforcing and improving assembly can further improve the efficiency of the service life guarantee assembly. The two assemblies are matched with each other, the use stability of the outdoor circuit breaker is guaranteed in many aspects, and the stability and protection grade of the whole circuit breaker are higher.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically to a high-protection-level outdoor circuit breaker. Background Technology

[0002] Outdoor vacuum circuit breakers generally include a mechanism housing and an insulating cylinder at the top of the mechanism housing. A vacuum interrupter is located inside the insulating cylinder, and a fixed contact and a moving contact are located inside the vacuum interrupter. The fixed contact and the moving contact are used to connect the power supply line and the load line, respectively. The mechanism housing contains a transmission mechanism, an operating mechanism, and other devices, and an insulating rod extends into the insulating cylinder to drive the moving contact to perform the closing and opening movements.

[0003] In the Chinese patent application number CN202220644690.4 entitled "An outdoor high voltage vacuum circuit breaker with good heat dissipation performance", the patent fixes the wedge block mounting clip into the wedge mounting groove and sets it on the side of the base. The wedge block effectively limits the heat dissipation module to prevent it from shaking or loosening, and the disassembly and installation are relatively simple. When the circuit breaker in this patent and existing technology opens its contacts, the current forms a vacuum arc in the contact gap, which generates high temperature in the vacuum interrupter. The heat generated by the arc is not easily dissipated, and the long-term accumulation of heat will accelerate the aging of electrical components and shorten the service life of the circuit breaker. In addition, when the outdoor circuit breaker is used outdoors, the insulating porcelain cylinder of the circuit breaker is easily affected by dust and rain and snow, resulting in low operational stability of the circuit breaker. Summary of the Invention

[0004] This invention provides a high-protection-level outdoor circuit breaker, which can effectively solve the problems in the prior art mentioned above, where the current forms a vacuum arc in the contact gap when the circuit breaker is tripped, and the heat generated by the arc accumulates over a long period of time, which shortens the service life of the circuit breaker. In addition, when the circuit breaker is used outdoors, the insulating porcelain cylinder of the circuit breaker is easily affected by dust and rain and snow, resulting in low operational stability of the circuit breaker.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-protection-level outdoor circuit breaker, comprising an assembly box, wherein the assembly box is provided with a life extension protection component, and the life extension protection component includes a supporting porcelain cylinder; A supporting ceramic cylinder is installed on the top of the assembly box. A connecting ceramic cylinder is connected to the top of the supporting ceramic cylinder. A vacuum ceramic cylinder is connected to the top of the connecting ceramic cylinder. A moving contact is installed inside the vacuum ceramic cylinder at the top of the connecting ceramic cylinder. An insulating pull rod is connected to the bottom of the moving contact inside the supporting ceramic cylinder. The top of both sides of the supporting ceramic cylinder is connected to the assembly ceramic tube, the top of the assembly ceramic tube is connected to the sealing ceramic box, the inside of the assembly ceramic tube is fixed with a sliding cylinder, the inside of the sliding cylinder is slidably connected with a sliding pull rod, one end of the sliding pull rod is connected to the outside of the insulating pull rod through a steel wire rope, the other end of the sliding pull rod is connected to one end of the limiting pull rod through a connecting disc, the inside of the sealing ceramic box is fixed with an annular airbag, the other end of the limiting pull rod passes through the middle of the annular airbag and is connected with a compression plate; The vacuum ceramic cylinder is equipped with air jet risers on both sides, and multiple top air jet holes are equally spaced on one side of each air jet riser.

[0006] According to the above technical solution, three supporting ceramic cylinders are provided. A stationary contact is installed inside the vacuum ceramic cylinder at the top of the moving contact. A shielding cover is fixed inside the vacuum ceramic cylinder and outside the moving and stationary contacts. The top and bottom of the outer side of the shielding cover are bonded to the vacuum ceramic cylinder with insulating adhesive. The middle of the outer side of the shielding cover is in contact with the inner wall of the vacuum ceramic cylinder.

[0007] According to the above technical solution, the connecting disc is connected to one end of the sliding cylinder by a return spring, and a limit sleeve is fixed at the top of the inner part of the assembled ceramic tube, with a limit rod slidably connected in the middle of the limit sleeve.

[0008] According to the above technical solution, the contact surface between the sliding rod and the sliding cylinder is a smooth surface, and the longitudinal section shape of the limiting rod is rectangular.

[0009] According to the above technical solution, the annular airbag is internally connected to several airbag springs, which are evenly distributed inside the annular airbag. An air supply hose is connected to one side of the annular airbag, and a T-connector is connected to the bottom of the jet riser. The air supply hose passes through the sealed ceramic box and is connected to one end of the adjacent T-connector.

[0010] According to the above technical solution, an auxiliary air pump is installed on one side of the assembly box. The air outlet of the auxiliary air pump is connected to a main air pipe through a heating tank. Six three-way flexible hoses are connected to one side of the main air pipe. One end of each three-way flexible hose is connected to the other end of an adjacent three-way connector.

[0011] According to the above technical solution, a heating tank is installed on one side of the assembly box near the auxiliary air pump. An electric heating wire is installed inside the heating tank. The air outlet of the auxiliary air pump is connected to the bottom of the heating tank, and the top of the heating tank is connected to the main air pipe.

[0012] According to the above technical solution, the assembly box is provided with a reinforcing and lifting component, which includes an electric push rod; The assembly box is equipped with electric actuators at both ends, and a linkage rod is connected between the output ends of the two electric actuators. Six support feet are welded to one side of the linkage rod, and a C-shaped frame is fixed to the top of the support feet by bolts. One end of the C-shaped frame is fixedly connected to the bottom of the adjacent air jet riser. Cleaning risers are fixed to both sides of the supporting ceramic cylinder. The other end of the C-shaped frame is fixedly connected to the bottom of the adjacent cleaning riser. Multiple bottom air jet holes are opened at equal intervals on one side of the cleaning riser. The other end of the three-way hose is connected to the bottom of the adjacent cleaning riser. Multiple umbrella skirts are equally spaced on the outer sides of both the supporting ceramic cylinder and the vacuum ceramic cylinder. A rotating ring is fitted on the outer side of the supporting ceramic cylinder and between two adjacent umbrella skirts. A rotating ring is also fitted on the outer side of the vacuum ceramic cylinder and between two adjacent umbrella skirts. Three dust removal brushes are connected at equal intervals on the outer side of the rotating ring.

[0013] According to the above technical solution, three force-bearing plates are connected at equal intervals on the outer side of the rotating ring, there is a gap between the supporting ceramic cylinder and the rotating ring, and there is also a gap between the vacuum ceramic cylinder and the rotating ring.

[0014] According to the above technical solution, the input ends of the auxiliary air pump, heating wire and electric push rod are electrically connected to the output end of the controller, and the input end of the controller is electrically connected to the output end of the external power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Equipped with life-extension protection components, when the circuit breaker trips, the insulating pull rod descends. Under the connection of the steel wire rope, the steel wire rope pulls the sliding pull rod, the limit pull rod, and the compression plate. The return spring and the air bladder spring are compressed, and the compression plate squeezes the annular air bladder. The air inside the annular air bladder is squeezed out. The squeezed air enters the air jet riser through the air supply hose and the tee connector, and is ejected from the top air jet hole. The ejected air blows on the surface of the vacuum ceramic cylinder, accelerating the air flow on the surface of the vacuum ceramic cylinder. The flowing air carries away the heat, preventing heat from accumulating on the moving contact, shield, and stationary contact for a long time. Compared with other technologies, whenever the circuit breaker trips, the electromechanical mechanism of the circuit breaker will drive the compression plate to squeeze the annular air bladder, realizing real-time synchronous operation of tripping and heat dissipation, improving the heat dissipation effect of the circuit breaker and extending the service life of the circuit breaker. Whenever the circuit breaker trips, the air inside the annular airbag enters the jet riser and cleans the inside of the riser. The air ejected from the top jet hole and bottom jet hole achieves heat dissipation while also blowing away the dust on the surface of the vacuum porcelain cylinder and the supporting porcelain cylinder, thus preventing surface flashover faults induced by dust accumulation in the circuit breaker's insulating porcelain cylinder. The circuit breaker has high operational stability. When the weather temperature is high, the compressed air output by the auxiliary air pump flows through the main air pipe, the three-way hose and the three-way connector into the inside of the jet riser and the cleaning riser, and finally sprays out from the top jet hole and the bottom jet hole. Under the action of heat conduction, it actively cools down the electrical components inside the supporting porcelain cylinder and the vacuum porcelain cylinder, avoiding the accelerated aging of electrical components and the decrease in mechanical strength caused by prolonged high temperature weather, and further extending the service life of the circuit breaker. The air output from the auxiliary air pump enters the heating tank and is heated by the heating wire. In snowy and freezing rain weather, the hot air ejected from the top and bottom air jets can prevent ice bridges from forming on the vacuum ceramic cylinder and the supporting ceramic cylinder, thus preventing ice flashover caused by electrical insulation failure due to ice bridges, ensuring the normal operation of the circuit breaker and ensuring high operational stability of the circuit breaker.

[0016] 2. Equipped with a reinforced lifting component, a rotating ring is fitted between two adjacent umbrella skirts. A dust removal brush and a stress plate are installed on the outside of the rotating ring. When the natural wind force is strong, the stress plate drives the rotating ring and dust removal brush to rotate under the action of the wind. The rotating dust removal brush cleans the top of the umbrella skirt. Combined with the cleaning of the insulating porcelain cylinder each time the circuit breaker is tripped, the cleanliness of the circuit breaker's insulating porcelain cylinder is fully guaranteed. This avoids the surface flashover fault induced by the accumulation of dust in the circuit breaker's insulating porcelain cylinder, fully guaranteeing the normal operation of the circuit breaker and making the circuit breaker's operation more stable. When the natural wind is weak, the auxiliary air pump supplies air into the jet riser and cleaning riser. During the air supply process, the electric actuator drives the synchronous linkage rod, the U-shaped frame, the jet riser, and the cleaning riser to swing back and forth. By continuously changing the jet position of the top jet hole and the bottom jet hole, the compressed air can act on the force plate in different directions, realizing the continuous rotation of the rotating ring. The air output by the auxiliary air pump drives the rotating ring and the dust removal brush to rotate, realizing the active cleaning of the circuit breaker insulation porcelain cylinder, further ensuring the cleanliness of the circuit breaker insulation porcelain cylinder, eliminating the need for manual on-site cleaning, and reducing labor costs.

[0017] In summary, the extended life protection component circuit breaker can quickly remove the heat generated during tripping and clean the dust from the insulating porcelain cylinder. It can fully ensure the operational stability of the circuit breaker in high-temperature and rainy / snowy weather. The enhanced component can further improve the effectiveness of the extended life protection component by adding corresponding structures. The two components work together to ensure the stability of outdoor circuit breakers in many ways. Compared with existing technologies, the overall stability and protection level of the circuit breaker are higher. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the life extension protection component of the present invention; Figure 3 This is a schematic diagram of the installation structure of the vacuum ceramic cylinder of the present invention; Figure 4 This is a schematic diagram of the installation structure of the sealed ceramic box of the present invention; Figure 5 This is a schematic diagram of the installation structure of the annular airbag of the present invention; Figure 6 This is a schematic diagram of the structure of the enhanced and improved component of the present invention; Figure 7 This is a schematic diagram of the installation structure of the U-shaped frame of the present invention; Figure 8 This is a schematic diagram of the installation structure of the dust removal brush of the present invention; Numbered in the diagram: 1. Assembly box; 2. Life Extension Protection Components; 201. Support Ceramic Cylinder; 202. Connecting Ceramic Cylinder; 203. Vacuum Ceramic Cylinder; 204. Moving Contact; 205. Insulating Pull Rod; 206. Shielding Cover; 207. Stationary Contact; 208. Assembly Ceramic Tube; 209. Sealed Ceramic Box; 210. Sliding Cylinder; 211. Sliding Pull Rod; 212. Connecting Disc; 213. Return Spring; 214. Limit Sleeve; 215. Limit Pull Rod; 216. Annular Airbag; 217. Airbag Spring; 218. Extrusion Plate; 219. Gas Supply Hose; 220. Jet Riser; 221. Top Jet Hole; 222. T-Connector; 223. Steel Wire Rope; 224. Auxiliary Air Pump; 225. Heating Tank; 226. Heating Wire; 227. Main Air Pipe; 228. T-Connector; 3. Reinforced lifting components; 301. Electric actuator; 302. Linkage rod; 303. Support leg; 304. C-shaped frame; 305. Cleaning riser; 306. Bottom air jet; 307. Umbrella skirt; 308. Rotating ring; 309. Dust removal brush; 310. Load-bearing plate. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figure 1-8As shown, the present invention provides a high-protection-level outdoor circuit breaker technical solution, including an assembly box 1. The assembly box 1 is provided with a life extension protection component 2. The life extension protection component 2 includes a supporting porcelain cylinder 201, a connecting porcelain cylinder 202, a vacuum porcelain cylinder 203, a moving contact 204, an insulating pull rod 205, a shielding cover 206, a stationary contact 207, an assembly porcelain tube 208, a sealed porcelain box 209, a sliding cylinder 210, a sliding pull rod 211, a connecting disc 212, a return spring 213, a limit sleeve 214, a limit pull rod 215, an annular airbag 216, an airbag spring 217, a compression plate 218, an air supply hose 219, an air jet riser 220, a top air jet hole 221, a three-way connector 222, a steel wire rope 223, an auxiliary air pump 224, a heating tank 225, an electric heating wire 226, a main air pipe 227, and a three-way hose 228. A supporting ceramic cylinder 201 is installed on the top of the assembly box 1. A connecting ceramic cylinder 202 is connected to the top of the supporting ceramic cylinder 201. A vacuum ceramic cylinder 203 is connected to the top of the connecting ceramic cylinder 202. A moving contact 204 is installed inside the vacuum ceramic cylinder 203 at the top of the connecting ceramic cylinder 202. An insulating pull rod 205 is connected to the bottom of the moving contact 204 inside the supporting ceramic cylinder 201. There are three supporting ceramic cylinders 201. A stationary contact 207 is installed inside the vacuum ceramic cylinder 203 at the top of the moving contact 204. A shielding cover is fixed inside the vacuum ceramic cylinder 203 and outside the moving contact 204 and the stationary contact 207. 206. The top and bottom of the outer side of the shield 206 are bonded and fixed to the vacuum ceramic cylinder 203 with insulating adhesive. The middle of the outer side of the shield 206 is in contact with the inner wall of the vacuum ceramic cylinder 203. The supporting ceramic cylinder 201, connecting ceramic cylinder 202 and vacuum ceramic cylinder 203 are all made of alumina ceramic. Alumina ceramic has thermal conductivity, excellent electrical insulation, high hardness and high temperature resistance. The moving contact 204, shield 206 and stationary contact 207 are all in contact with alumina ceramic. The heat of the moving contact 204, shield 206 and stationary contact 207 can be quickly conducted to the alumina ceramic. The top of both sides of the supporting ceramic cylinder 201 is connected to the assembly ceramic tube 208. The top of the assembly ceramic tube 208 is connected to the sealing ceramic box 209. The assembly ceramic tube 208 is fixed inside the sliding cylinder 210. The sliding cylinder 210 is slidably connected to the sliding pull rod 211. One end of the sliding pull rod 211 is connected to the outside of the insulating pull rod 205 through the steel wire pull rope 223. The other end of the sliding pull rod 211 is connected to one end of the limiting pull rod 215 through the connecting disc 212. The sealing ceramic box 209 is fixed inside the annular airbag 216. The other end of the limiting pull rod 215 passes through the annular airbag 216 and is connected to the middle of the compression plate 218. The connecting disc 212 is connected to one end of the sliding cylinder 210 via a return spring 213. When the insulating pull rod 205 moves downward to separate the moving contact 204 and the stationary contact 207, the steel wire rope 223 pulls the sliding pull rod 211, compressing the return spring 213. When the insulating pull rod 205 moves upward to connect the moving contact 204 and the stationary contact 207, the return spring 213 rebounds, and the sliding pull rod 211 returns to its original position. A limit sleeve 214 is fixed at the top of the inner end of the ceramic tube 208. A limit pull rod 215 is slidably connected in the middle of the limit sleeve 214. The longitudinal section of the limit pull rod 215 is rectangular. The limit sleeve 214 can limit the pull rod. The movement of rod 215 is limited to ensure stable movement of the limiting rod 215. The contact surface between the sliding rod 211 and the sliding cylinder 210 is a smooth surface, which reduces the frictional resistance between the sliding rod 211 and the sliding cylinder 210, allowing the sliding rod 211 to slide smoothly inside the sliding cylinder 210. Several airbag springs 217 are connected inside the annular airbag 216. The airbag springs 217 are evenly distributed inside the annular airbag 216 and play an elastic support role. When the annular airbag 216 is deformed by force, the airbag springs 217 are compressed. When the external force is removed, the airbag springs 217 rebound, and the annular airbag 216 can return to its original shape. The vacuum ceramic cylinder 203 is equipped with jet risers 220 on both sides. Multiple top jet holes 221 are evenly spaced on one side of the jet riser 220. A gas supply hose 219 is connected to one side of the annular airbag 216. A three-way connector 222 is connected to the bottom of the jet riser 220. The gas supply hose 219 passes through the sealed ceramic box 209 and is connected to one end of the adjacent three-way connector 222. When the insulating pull rod 205 moves downward, the steel wire pull rope 223 pulls the sliding pull rod 211, the limit pull rod 215 and the compression plate 218. The return spring 213 and the airbag spring 217 are compressed, and the air inside the annular airbag 216 is squeezed out. The squeezed air enters the jet riser 220 through the gas supply hose 219 and the three-way connector 222, and finally sprays out from the top jet hole 221. An auxiliary air pump 224 is installed on one side of the assembly box 1. The outlet of the auxiliary air pump 224 is connected to a main air pipe 227 via a heating tank 225. Six three-way hoses 228 are connected to one side of the main air pipe 227. One end of each three-way hose 228 is connected to the other end of an adjacent three-way connector 222. The compressed air output by the auxiliary air pump 224 can flow through the main air pipe 227, the three-way hoses 228, and the three-way connectors 222 into the jet riser 220. An auxiliary air pump 224 is installed on one side of the assembly box 1. There is a heating tank 225, and an electric heating wire 226 is installed inside the heating tank 225. The outlet of the auxiliary air pump 224 is connected to the bottom of the heating tank 225, and the top of the heating tank 225 is connected to the main air pipe 227. The air output by the auxiliary air pump 224 enters the heating tank 225 and can be heated by the electric heating wire 226. In snowy and freezing rain weather, the hot air can be ejected from the top air jet hole 221. The ejected hot air acts on the surface of the vacuum ceramic cylinder 203 to prevent the formation of ice bridges on the vacuum ceramic cylinder 203. Assembly box 1 is provided with a reinforcing and lifting component 3, which includes an electric push rod 301, a linkage rod 302, a support foot 303, a C-shaped frame 304, a cleaning riser 305, a bottom air jet vent 306, a skirt 307, a rotating ring 308, a dust removal brush 309, and a force plate 310. The assembly box 1 is equipped with electric actuators 301 at both ends. The output ends of the two electric actuators 301 are connected to a linkage rod 302 in the middle. Six support feet 303 are welded to one side of the linkage rod 302. The top of the support feet 303 is fixed with a C-shaped frame 304 by bolts. One end of the C-shaped frame 304 is fixedly connected to the bottom of the adjacent air jet riser 220. Cleaning risers 305 are fixed on both sides of the supporting ceramic cylinder 201. The other end of the C-shaped frame 304 is fixedly connected to the bottom of the adjacent cleaning riser 305. Multiple bottom air jet holes 306 are opened at equal intervals on one side of the cleaning riser 305. The other end of the three-way hose 228 is connected to the bottom of the adjacent cleaning riser 305. The air output by the auxiliary air pump 224 can also flow through the three-way hose 228 into the interior of the cleaning riser 305 and finally be ejected from the bottom air jet hole 306. The air ejected from the bottom air jet hole 306 can act on the surface of the supporting ceramic cylinder 201. Multiple umbrella skirts 307 are evenly spaced on the outer sides of both the supporting ceramic cylinder 201 and the vacuum ceramic cylinder 203. A rotating ring 308 is sleeved on the outer side of the supporting ceramic cylinder 201, between two adjacent umbrella skirts 307. A rotating ring 308 is also sleeved on the outer side of the vacuum ceramic cylinder 203, between two adjacent umbrella skirts 307. Three dust removal brushes 309 are evenly connected to the outer side of the rotating ring 308, and three force-bearing plates 310 are evenly connected to the outer side of the rotating ring 308. There is a gap between the supporting ceramic cylinder 201 and the rotating ring 308. There is also a gap in the middle of the rotating ring 308. When the natural wind is strong, the force plate 310 can drive the rotating ring 308 and the dust removal brush 309 to rotate under the action of the wind. The rotating dust removal brush 309 can clean the top of the umbrella skirt 307 to avoid surface flashover faults caused by dust accumulation in the circuit breaker insulating porcelain cylinder. When the natural wind is weak, the auxiliary air pump 224 delivers air to the inside of the jet riser 220 and the cleaning riser 305. The air ejected through the top jet hole 221 and the bottom jet hole 306 can also drive the rotating ring 308 to rotate. The input terminals of the auxiliary air pump 224, heating wire 226, and electric actuator 301 are electrically connected to the output terminal of the controller. The input terminal of the controller is electrically connected to the output terminal of an external power supply. The controller can control the corresponding electrical components, facilitating remote automated operation.

[0022] The working principle and usage process of this invention: When the circuit breaker is tripped, the electromechanical mechanism of the circuit breaker drives the insulating pull rod 205 to descend, and the moving contact 204 and the stationary contact 207 separate, realizing the tripping of the circuit breaker. At the instant the moving contact 204 and the stationary contact 207 separate, the current breaks down the metal surface in the vacuum, generating a metal vapor arc. In the vacuum environment, the metal vapor rapidly diffuses to the inner wall of the shield 206 and condenses on the inner wall of the shield 206, completing the arc extinguishing. A large amount of heat is generated during the tripping process of the circuit breaker. The supporting ceramic cylinder 201, the connecting ceramic cylinder 202 and the vacuum ceramic cylinder 203 are all made of alumina ceramic. Alumina ceramic has thermal conductivity, excellent electrical insulation, high hardness and high temperature resistance. The heat generated during the tripping process can be quickly conducted to the alumina ceramic through the moving contact 204, the shield 206 and the stationary contact 207. When the circuit breaker trips, the insulating pull rod 205 descends. Under the connection of the wire rope 223, the wire rope 223 pulls the sliding pull rod 211, the limit pull rod 215, and the compression plate 218. The return spring 213 and the airbag spring 217 are compressed, and the compression plate 218 compresses the annular airbag 216. The annular airbag 216 is compressed, and the air inside is squeezed out. The squeezed air enters the jet riser 220 through the air delivery hose 219 and the tee connector 222, and finally exits from the top jet hole 221. The ejected air blows across the surface of the vacuum ceramic cylinder 203, accelerating the airflow on the surface of the vacuum ceramic cylinder 203. The rapidly flowing air can carry away the heat from the vacuum ceramic cylinder 203, preventing... Heat accumulates on the moving contact 204, shield 206, and stationary contact 207 over a long period, extending their service life. When the circuit breaker closes, the insulating rod 205 moves upward, and the moving contact 204 and stationary contact 207 engage. During the closing process, the return spring 213 rebounds, and the sliding rod 211 returns to its original position. Simultaneously, the airbag spring 217 rebounds, and the annular airbag 216 rebounds to its original position. Compared to other technologies, whenever the circuit breaker opens, the electromechanical mechanism of the circuit breaker drives the compression plate 218 to compress the annular airbag 216, achieving real-time synchronous operation of opening and heat dissipation, improving the heat dissipation effect of the circuit breaker, and extending its service life. Furthermore, cleaning risers 305 are provided on both sides of the supporting porcelain cylinder 201. The cleaning risers 305 are connected to the air supply hose 219 through a three-way hose 228 and a three-way connector 222. Whenever the circuit breaker trips, the air inside the annular airbag 216 can enter the cleaning riser 305 while entering the jet riser 220. Finally, it is ejected from the top jet hole 221 and the bottom jet hole 306. The air ejected from the top jet hole 221 and the bottom jet hole 306 achieves heat dissipation while blowing away the dust on the surface of the vacuum porcelain cylinder 203 and the supporting porcelain cylinder 201, thus preventing surface flashover faults caused by dust accumulation in the circuit breaker insulating porcelain cylinder. When the weather temperature is high, the auxiliary air pump 224 is started. The compressed air output by the auxiliary air pump 224 flows through the main air pipe 227, the three-way hose 228 and the three-way connector 222 into the air jet riser 220 and the cleaning riser 305, and finally is ejected from the top air jet hole 221 and the bottom air jet hole 306. The ejected air cools the support ceramic cylinder 201 and the vacuum ceramic cylinder 203. Under the action of heat conduction, the electrical components inside the support ceramic cylinder 201 and the vacuum ceramic cylinder 203 are actively cooled, which avoids the accelerated aging of electrical components and the decrease in mechanical strength caused by prolonged high temperature weather, and further extends the service life of the circuit breaker. Heating wire 226 is installed inside the heating tank 225. Air output from auxiliary air pump 224 enters the heating tank 225 and is heated by heating wire 226. In snowy and freezing rain weather, hot air is ejected from top air jet 221 and bottom air jet 306. The ejected hot air acts on the vacuum ceramic cylinder 203 and the supporting ceramic cylinder 201 to heat them, preventing the formation of ice bridges on the vacuum ceramic cylinder 203 and the supporting ceramic cylinder 201. This prevents the electrical insulation from failing due to ice bridges and causing ice flashover, ensuring the normal operation of the circuit breaker and the high operational stability of the circuit breaker. A rotating ring 308 is sleeved between two adjacent umbrella skirts 307. Three dust removal brushes 309 are connected at equal intervals on the outer side of the rotating ring 308. Three force plates 310 are connected at equal intervals on the outer side of the rotating ring 308. When the natural wind force is strong, the force plates 310 can drive the rotating ring 308 and dust removal brushes 309 to rotate under the action of the wind. The rotating dust removal brushes 309 can clean the top of the umbrella skirts 307. Together with the air output by the circuit breaker tripping ring airbag 216, the insulating porcelain cylinder is blown clean, which fully ensures the cleanliness of the circuit breaker insulating porcelain cylinder and avoids the surface flashover fault induced by the accumulation of dust in the circuit breaker insulating porcelain cylinder. This fully ensures the normal operation of the circuit breaker and makes the circuit breaker more stable. When the natural wind is weak, the auxiliary air pump 224 supplies air into the jet riser 220 and the cleaning riser 305, and finally ejects it from the top jet hole 221 and the bottom jet hole 306. During the air supply process, the electric actuator 301 drives the synchronous linkage rod 302, the C-shaped frame 304, the jet riser 220 and the cleaning riser 305 to swing back and forth. By continuously changing the jet position of the top jet hole 221 and the bottom jet hole 306, the ejected compressed air can act on the force plate 310 in different directions, so as to realize the continuous rotation of the rotating ring 308. The air output by the auxiliary air pump 224 drives the rotating ring 308 and the dust removal brush 309 to rotate, thereby realizing the active cleaning of the circuit breaker insulation porcelain cylinder, further ensuring the cleanliness of the circuit breaker insulation porcelain cylinder, eliminating the need for manual on-site cleaning, and reducing labor costs.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-protection-level outdoor circuit breaker, comprising a mounting box (1), characterized in that, The assembly box (1) is provided with a life extension protection component (2), which includes a supporting ceramic cylinder (201). The assembly box (1) is equipped with a supporting ceramic cylinder (201) on the top. The supporting ceramic cylinder (201) is connected to a connecting ceramic cylinder (202) on the top. The connecting ceramic cylinder (202) is connected to a vacuum ceramic cylinder (203) on the top. The connecting ceramic cylinder (202) is equipped with a moving contact (204) inside the vacuum ceramic cylinder (203) on the top. The moving contact (204) is connected to an insulating pull rod (205) inside the supporting ceramic cylinder (201) on the bottom. The top of both sides of the supporting ceramic cylinder (201) is connected to the assembly ceramic tube (208), the top of the assembly ceramic tube (208) is connected to the sealing ceramic box (209), the assembly ceramic tube (208) is fixed inside the sliding cylinder (210), the sliding cylinder (210) is slidably connected to the sliding pull rod (211), one end of the sliding pull rod (211) is connected to the outside of the insulating pull rod (205) through the steel wire pull rope (223), the other end of the sliding pull rod (211) is connected to one end of the limiting pull rod (215) through the connecting disc (212), the sealing ceramic box (209) is fixed inside the annular airbag (216), the other end of the limiting pull rod (215) passes through the annular airbag (216) and is connected to the compression plate (218). The vacuum ceramic cylinder (203) is equipped with jet risers (220) on both sides, and multiple top jet holes (221) are equally spaced on one side of the jet riser (220).

2. The high-protection-level outdoor circuit breaker according to claim 1, characterized in that, Three supporting ceramic cylinders (201) are provided. A stationary contact (207) is installed inside the vacuum ceramic cylinder (203) at the top of the moving contact (204). A shield (206) is fixed inside the vacuum ceramic cylinder (203) and outside the moving contact (204) and the stationary contact (207). The top and bottom of the outer side of the shield (206) are bonded to the vacuum ceramic cylinder (203) with insulating adhesive. The middle of the outer side of the shield (206) is in contact with the inner wall of the vacuum ceramic cylinder (203).

3. The high-protection-level outdoor circuit breaker according to claim 1, characterized in that, The connecting disc (212) is connected to one end of the sliding cylinder (210) via a return spring (213). The top of the assembly ceramic tube (208) is fixed with a limit sleeve (214), and the limit sleeve (214) is slidably connected with a limit rod (215) in the middle.

4. The high-protection-level outdoor circuit breaker according to claim 3, characterized in that, The contact surface between the sliding rod (211) and the sliding cylinder (210) is a smooth surface, and the longitudinal section of the limiting rod (215) is rectangular.

5. The high-protection-level outdoor circuit breaker according to claim 1, characterized in that, The annular airbag (216) is internally connected to several airbag springs (217), which are evenly distributed inside the annular airbag (216). An air supply hose (219) is connected to one side of the annular airbag (216), and a three-way connector (222) is connected to the bottom of the jet riser (220). The air supply hose (219) passes through the sealed ceramic box (209) and is connected to one end of the adjacent three-way connector (222).

6. A high-protection-level outdoor circuit breaker according to claim 5, characterized in that, An auxiliary air pump (224) is installed on one side of the assembly box (1). The air outlet of the auxiliary air pump (224) is connected to a main air pipe (227) through a heating tank (225). Six three-way hoses (228) are connected to one side of the main air pipe (227). One end of the three-way hose (228) is connected to the other end of the adjacent three-way connector (222).

7. A high-protection-level outdoor circuit breaker according to claim 6, characterized in that, A heating tank (225) is installed on one side of the assembly box (1) near the auxiliary air pump (224). An electric heating wire (226) is installed inside the heating tank (225). The air outlet of the auxiliary air pump (224) is connected to the bottom of the heating tank (225), and the top of the heating tank (225) is connected to the main air pipe (227).

8. A high-protection-level outdoor circuit breaker according to claim 7, characterized in that, The assembly box (1) is provided with a reinforcing and lifting component (3), which includes an electric push rod (301). The assembly box (1) is equipped with electric push rods (301) at both ends. A linkage rod (302) is connected in the middle of the output ends of the two electric push rods (301). Six support feet (303) are welded to one side of the linkage rod (302). A C-shaped frame (304) is fixed to the top of the support feet (303) by bolts. One end of the C-shaped frame (304) is fixedly connected to the bottom of the adjacent air jet riser (220). Cleaning risers (305) are fixed on both sides of the supporting ceramic cylinder (201). The other end of the C-shaped frame (304) is fixedly connected to the bottom of the adjacent cleaning riser (305). Multiple bottom air jet holes (306) are opened at equal intervals on one side of the cleaning riser (305). The other end of the three-way hose (228) is connected to the bottom of the adjacent cleaning riser (305). Multiple umbrella skirts (307) are equally spaced on the outer sides of the supporting ceramic cylinder (201) and the vacuum ceramic cylinder (203). A rotating ring (308) is sleeved on the outer side of the supporting ceramic cylinder (201) and between two adjacent umbrella skirts (307). A rotating ring (308) is also sleeved on the outer side of the vacuum ceramic cylinder (203) and between two adjacent umbrella skirts (307). Three dust removal brushes (309) are equally spaced on the outer side of the rotating ring (308).

9. A high-protection-level outdoor circuit breaker according to claim 8, characterized in that, Three force-bearing plates (310) are connected at equal intervals on the outer side of the rotating ring (308). There is a gap between the supporting ceramic cylinder (201) and the rotating ring (308), and there is also a gap between the vacuum ceramic cylinder (203) and the rotating ring (308).

10. A high-protection-level outdoor circuit breaker according to claim 8, characterized in that, The input terminals of the auxiliary air pump (224), heating wire (226) and electric push rod (301) are electrically connected to the output terminal of the controller, and the input terminal of the controller is electrically connected to the output terminal of the external power supply.

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