Pole-mounted circuit breaker convenient for pressure relief

Abstract

The invention discloses a pole-mounted circuit breaker convenient for pressure relief, and relates to the technical field of circuit breakers, the pole-mounted circuit breaker comprises a circuit breaker main body, the top of the circuit breaker main body is provided with an arc extinguish chamber, one side of the arc extinguish chamber is provided with a current transformer, and the side surface of the top of the arc extinguish chamber is fixedly connected with a pressure relief overhead valve through a pipeline; according to the invention, through the mutual cooperation of the components connected to the end part of the pressure relief overhead valve, gas generated in the arc extinguishing process in the arc extinguishing chamber can be rapidly discharged, and the gas can be rapidly discharged; the filter sleeve and the filter inner core are arranged in the filter sleeve, particulate matters and harmful components in exhausted gas are intercepted and adsorbed, so that the convenience of pressure relief of the pole-mounted circuit breaker is effectively improved, and the filter sleeve and the filter inner core are more convenient to replace in the use process due to the spliced structural design of the filter sleeve, so that the filter sleeve and the filter inner core are more convenient to replace. And therefore, the convenience and the environmental protection property of the pole-mounted circuit breaker in the pressure relief process can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and specifically to a pole-mounted circuit breaker that is convenient for pressure relief. Background Technique

[0002] A pole-mounted circuit breaker refers to a large control switch installed and operated on an electric pole. The research level and manufacturing technology of various circuit breakers have made great progress. Vacuum circuit breakers are not limited to medium-voltage power grids but are developing towards high voltage and large capacity. Sulfur hexafluoride circuit breakers have many advantages, such as strong opening ability, many consecutive opening times, frequent operation, low operation noise, and no fire hazard. For example, in the existing Chinese patent with the application number 202021313403.9, a sulfur hexafluoride on-line filtering device, it is proposed that the gas in the gas chamber of the sulfur hexafluoride circuit breaker flows into the main rectification and purification tower by a vacuum pump and a main compressor. Under the action of the first circulation compressor, the gas is repeatedly dried and filtered, and finally clean sulfur hexafluoride gas is separated, which prolongs the service life of the sulfur hexafluoride circuit breaker, reduces the fault time of the power grid, and improves the operation efficiency, with the characteristics of safety, labor saving, simplicity, and high efficiency. At the same time, in the existing Chinese patent, CN201822261850.3, named a pole-mounted circuit breaker operation lowering device, realizes the lowering of the operation device, solves a series of problems such as the too high manual operating mechanism, the large operation difficulty of high-altitude operations (using safety belts and foot buckles), and the requirement that only personnel with a "height climbing certificate" can operate. However, at present, during the use of pole-mounted circuit breakers, due to the lack of protective components, the high-temperature and high-pressure gas generated by the pole-mounted circuit breakers cannot be discharged and filtered in time, resulting in an increase in the internal pressure of the pole-mounted circuit breakers, affecting the normal and safe use of the pole-mounted circuit breakers. Summary of the Invention

[0003] The present invention provides a pole-mounted circuit breaker that is convenient for pressure relief, which can effectively solve the problem in the above-mentioned background technique that during the use of current pole-mounted circuit breakers, due to the lack of protective components, the high-temperature and high-pressure gas generated by the pole-mounted circuit breakers cannot be discharged and filtered in time, resulting in an increase in the internal pressure of the pole-mounted circuit breakers and affecting the normal and safe use of the pole-mounted circuit breakers.

[0004] To achieve the above object, the present invention provides the following technical solution: A pole-mounted circuit breaker that is convenient for pressure relief, including a circuit breaker main body, an arc extinguishing chamber is arranged at the top of the circuit breaker main body, and a current transformer is arranged on one side of the arc extinguishing chamber; A pressure relief protection buffer mechanism is arranged at the bottom of the circuit breaker main body. The pressure relief protection buffer mechanism is used for assisting in pressure relief of the pole-mounted circuit breaker and assisting in adjusting the installation method of the pole-mounted circuit breaker to intercept and partition the bottom of the pole-mounted circuit breaker; The pressure relief and protection buffer mechanism includes a pressure relief top valve; A pressure relief top valve is connected to the side of the top of the arc extinguishing chamber. A clamping top pipe is connected to the middle of one side of the pressure relief top valve. An installation small pipe is connected to the side of the circuit breaker body. The inner top of the installation small pipe is slidably clamped with an exhaust slide pipe. A filter sleeve is movably clamped between the clamping top pipe and the exhaust slide pipe. A filter inner core is filled inside the filter sleeve; A swing bent rod, a support arc block and a counterweight tail block are installed on the bottom surface of the circuit breaker body. A support spring is embedded on the top surface of the counterweight tail block.

[0005] Preferably, the positions between the clamping top pipe and the exhaust slide pipe correspond to each other, and exhaust holes are evenly arranged at equal intervals along the circumferential direction at the bottom of the outer side of the exhaust slide pipe. The top and bottom outer sides of the filter sleeve are tightly and slidably clamped between the inner walls of the clamping top pipe and the exhaust slide pipe respectively.

[0006] Preferably, the swing bent rod swings along the bottom of the circuit breaker body through an arc-shaped block and a rotating shaft, and the swing bent rod rotates horizontally through the rotating block at the bottom of the arc-shaped block. The top arc surface of the support arc block is tightly attached to the bottom arc surface of the exhaust slide pipe. The top end of the support spring is fixedly connected to the bottom surface of the circuit breaker body.

[0007] Preferably, both ends of the bottom surface of the circuit breaker body are fixedly connected with installation end boxes. One side of the installation end box is fixedly connected with a balance side box through a pipe. A sealing cover plate is installed on the top end of the balance side box through bolts. Pressing springs are fixedly connected to the bottom surface of the sealing cover plate at equal intervals. The ends of the pressing springs are fixedly connected with counterweight pressing blocks corresponding to the positions inside the balance side box. And insulating transmission oil is filled at the inner bottom of the balance side box; Installation sleeves are fixedly connected to the bottom surface of the circuit breaker body at equal intervals corresponding to the inner sides of the installation end boxes. A liquid guide rectangular pipe is fixedly connected between the installation sleeves. A balance spring is fixedly connected to the middle of the inner top end of the installation sleeve. The end of the balance spring is fixedly connected with a guide sleeve corresponding to the position inside the installation sleeve; A sliding flat block is fixedly connected to the bottom ends of a plurality of the guide sleeves. Balance rubber rods are embedded and installed on the outer sides of the sliding flat block. An installation bottom frame is fixedly connected to the ends of a plurality of the balance rubber rods. An installation bottom plate is fixedly connected to the bottom end of the installation bottom frame. A transmission spring piece is fixedly connected to one side of the installation bottom frame.

[0008] Preferably, the outer side of the counterweight pressing block is tightly and slidably attached to the inner wall of the balance side box. The pipe at the bottom of the balance side box is communicated with the inner cavity of the installation sleeve. The outer side of the top end of the guide sleeve is tightly and slidably attached to the inner wall of the installation sleeve.

[0009] Preferably, the bottom surface of the sliding flat block is in close sliding fit with the inner bottom surface of the installation bottom frame. An installation hole is provided at the end of the installation bottom plate. One side of the top of the transmission spring piece is in close fit with the side surface of the counterweight tail block.

[0010] Preferably, a top telescopic protection mechanism is provided on the top of the sealing cover plate. The top telescopic protection mechanism is used to protect the top of the pole-mounted circuit breaker so that the pole-mounted circuit breaker can adapt to a more severe environment. The top telescopic protection mechanism includes a mounting small plate. Two mounting small plates are fixedly connected to the middle of the top surfaces of the sealing cover plates. A support narrow rod is installed on the top surface of the mounting small plate through bolts. The middle of the top end of the support narrow rod is fixedly connected to a driving top box. Both bottom sides of the driving top box are fixedly connected to support side rods, and the included angle between the bottom surface of the support side rod and the side surface of the support narrow rod is 85 degrees. At both ends inside the driving top box, limit sleeves are fixedly clamped. A scroll spring is installed inside the limit sleeve. A central installation shaft is connected to the inside of the scroll spring. A protection cover roll is wound around the middle of the outside of the central installation shaft. The end of the protection cover roll is fixedly connected to a guiding end strip corresponding to the side surface of the support side rod. A shielding top plate is fixedly connected between the two driving top boxes. Both sides of the side surface of the driving top box are fixedly connected to mounting arc boxes. A rectangular protection box is fixedly connected at the position between the two mounting arc boxes. The end of the central installation shaft is sleeved at the position corresponding to the top of the inside of the mounting arc box. A driving bottom wheel is rotatably installed at the bottom of the inside of the mounting arc box through a rotating shaft. A transmission tooth ring is fixedly sleeved on the outer edge of the driving bottom wheel. A transmission toothed belt is tightly sleeved between the transmission belt wheel and the driving bottom wheel. A mounting small block is fixedly connected to the side surface of the support narrow rod corresponding to the inside of the rectangular protection box. The middle of the top end of the mounting small block is fixedly connected to a telescopic driving rod. A driving rack is fixedly sleeved on the outside of the telescopic driving rod.

[0011] Preferably, the inside of the limit sleeve is fixedly connected to the outer end of the scroll spring. The central installation shaft penetrates through the side surface of the driving top box, and the outside of the central installation shaft is rotatably connected to the side wall of the driving top box.

[0012] Preferably, the protection cover roll is composed of a plurality of rigid strip plates hinged together. The end of the guiding end strip is inserted into the guide groove on the side surface of the support side rod, and the end of the guiding end strip is in sliding fit with the guide groove on the side surface of the support side rod.

[0013] Preferably, the driving rack meshes with the transmission tooth rings on both sides. The telescopic driving rod is powered by an external power source.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is scientific and reasonable, and it is safe and convenient to use. 1. A pressure relief protection buffer mechanism is provided. Through the mutual cooperation between the components inside the pressure relief protection buffer mechanism, the pressure relief process and buffer process during the use of the pole-mounted circuit breaker are optimized. Through the mutual cooperation between the components connected to the end of the pressure relief top valve, the gas generated during the arc extinguishing process inside the arc extinguishing chamber can be quickly discharged, and the particulate matter and harmful components in the discharged gas are intercepted and adsorbed, thereby effectively improving the convenience of the pressure relief of the pole-mounted circuit breaker, and effectively preventing the pollution of the surrounding environment by the emissions of the pole-mounted circuit breaker. The spliced ​​structure design of the filter sleeve makes it easier to replace the filter sleeve and the filter core during use, thereby effectively improving the convenience and environmental protection of the pressure relief process of the pole-mounted circuit breaker; At the same time, through the design of the multi-layer flexible structure at the bottom of the installation end box, the pole-mounted circuit breaker can be used in the process of use. The multi-layer buffer can be used to buffer and protect the circuit breaker body located on the upper layer, effectively preventing the pole-mounted circuit breaker installed on the roadside from being affected by the vibration generated during the movement of the car. At the same time, the design of liquid transmission between the balancing side box and the installation sleeve prevents the flexible support component at the bottom of the circuit breaker body from being seriously deformed after long-term support. The detachable structural design of the compression spring and the counterweight block makes the maintenance of the bottom component of the pole-mounted circuit breaker more convenient, further improving the overall stability and safety of the pole-mounted circuit breaker. Through the inertia of the counterweight tail block itself and the flexible transmission design of the transmission spring, when the pole-mounted circuit breaker is subjected to instantaneous severe impact, the degree of damage to the pole-mounted circuit breaker can be indirectly reflected through the falling of the filter sleeve, so that the maintenance personnel can find the fault of the pole-mounted circuit breaker, further improving the safety of use and the convenience of maintenance of the pole-mounted circuit breaker.

[0015] 2. A top telescopic protection mechanism is provided. Through the mutual cooperation between the components inside the top telescopic protection mechanism, the convenience of the overall protection of the pole-mounted circuit breaker is effectively improved. Through the support narrow rod and the frame-type structural design of the components thereon, the windward area of ​​each component is effectively reduced, and the pole-mounted circuit breaker is prevented from additional shaking due to the increase of the windward surface during use. The retractable structural design of the protective cover roll can protect the top of the pole-mounted circuit breaker through the protective cover roll in bad weather, thereby effectively preventing hail and blizzards from directly acting on the top of the pole-mounted circuit breaker, and preventing bad weather from directly causing damage to the pole-mounted circuit breaker and reducing the service life of the pole-mounted circuit breaker, thereby effectively improving the environmental adaptability of the pole-mounted circuit breaker and extending the service life of the pole-mounted circuit breaker; Meanwhile, through the mutual cooperation among the components inside the arc-shaped box and the rectangular protective box, the process of winding and unwinding the protective cover roll becomes faster and more convenient. Through the winding and energy storage of the volute spring, the process of the protective cover roll is ensured. At the same time, through the design of the flat structure of the transmission toothed belt and the driving rack, the occupied space on the side of the pole-mounted circuit breaker is effectively compressed, further improving the convenience of the overall installation of the pole-mounted circuit breaker and the smoothness of transmission.

[0016] To sum up, through the mutual cooperation among the components inside the pressure relief protection buffer mechanism and the top telescopic protection mechanism, the overall installation, use, and protection process of the pole-mounted circuit breaker is optimized. Through the multi-layer buffer installation structure at the bottom, the impact of road vibration on the internal structure of the pole-mounted circuit breaker is effectively reduced. Through the auxiliary guiding and filtering structure, the pressure relief process of the pole-mounted circuit breaker is optimized, effectively improving the convenience and environmental protection of the pressure relief process of the pole-mounted circuit breaker. At the same time, through the protective cover roll to protect the top of the pole-mounted circuit breaker, the impact of the external environment on the pole-mounted circuit breaker is reduced, improving the overall environmental adaptability and service life of the pole-mounted circuit breaker, and further enhancing the convenience and safety of using the pole-mounted circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] In the drawings: Figure 1 is a schematic structural view of the present invention; Figure 2 is a schematic structural view of the bottom of the circuit breaker body of the present invention; Figure 3 is a schematic structural view of the pressure relief protection buffer mechanism of the present invention; Figure 4 is a schematic structural view of the installation of the counterweight block of the present invention; Figure 5 is a schematic structural view of the installation of the counterweight tail block of the present invention; Figure 6 is a schematic structural view of the inside of the installation end box of the present invention; Figure 7 is a schematic structural view of the top telescopic protection mechanism of the present invention; Figure 8 is a schematic structural view of the installation of the driving rack of the present invention; Figure 9 is a schematic structural view of the installation of the volute spring of the present invention; Reference numerals in the figures: 1. Circuit breaker body; 2. Arc extinguishing chamber; 3. Current transformer; 4. Pressure relief protection buffer mechanism; 401. Pressure relief top valve; 402. Clamping top pipe; 403. Installation small pipe; 404. Exhaust slide pipe; 405. Filter sleeve; 406. Filter inner core; 407. Swing bent rod; 408. Support arc block; 409. Counterweight tail block; 410. Support spring; 411. Installation end box; 412. Balance side box; 413. Sealing cover plate; 414. Compression spring; 415. Counterweight pressing block; 416. Installation sleeve; 417. Liquid guide rectangular pipe; 418. Balance spring; 419. Guide sleeve; 420. Sliding flat block; 421. Balance rubber rod; 422. Installation bottom frame; 423. Installation bottom plate; 424. Driving reed piece 5. Top telescopic protection mechanism; 501. Installation small plate; 502. Support narrow rod; 503. Driving top box; 504. Support side rod; 505. Limit sleeve; 506. Volute spring; 507. Central installation shaft; 508. Protection cover roll; 509. Guide end strip; 510. Shielding top plate; 511. Installation arc box; 512. Rectangular protection box; 513. Driving pulley; 514. Driving bottom wheel; 515. Driving tooth ring; 516. Driving tooth belt; 517. Installation small block; 518. Telescopic driving rod; 519. Driving rack Detailed implementation mode

[0019] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention

[0020] Embodiment: As Figures 1-9 shown, the present invention provides a technical solution, a pole-mounted circuit breaker facilitating pressure relief, including a circuit breaker main body 1, an arc extinguishing chamber 2 is arranged at the top of the circuit breaker main body 1, and a current transformer 3 is arranged on one side of the arc extinguishing chamber 2; A pressure relief protection buffer mechanism 4 is arranged at the bottom of the circuit breaker main body 1. The pressure relief protection buffer mechanism 4 is used to assist in pressure relief of the pole-mounted circuit breaker and assist in adjusting the installation method of the pole-mounted circuit breaker to intercept the bottom of the pole-mounted circuit breaker The pressure relief protection buffer mechanism 4 includes a pressure relief top valve 401, a clamping top pipe 402, an installation small pipe 403, an exhaust slide pipe 404, a filter sleeve 405, a filter inner core 406, a swing bent rod 407, a support arc block 408, a counterweight tail block 409, a support spring 410, an installation end box 411, a balance side box 412, a sealing cover plate 413, a compression spring 414, a counterweight pressing block 415, an installation sleeve 416, a liquid guide rectangular pipe 417, a balance spring 418, a guide sleeve 419, a sliding flat block 420, a balance rubber rod 421, an installation bottom frame 422, an installation bottom plate 423 and a driving reed piece 424; On the side of the top of the arc extinguishing chamber 2, a pressure relief top valve 401 is fixedly connected through a pipeline. In the middle of one side of the pressure relief top valve 401, a clamping top pipe 402 is fixedly connected. At the position corresponding to the bottom of the clamping top pipe 402 on the side of the circuit breaker body 1, an installation small pipe 403 is fixedly connected. A sliding exhaust pipe 404 is slidably clamped at the inner top of the installation small pipe 403. The installation small pipe 403 is used to limit and guide the sliding exhaust pipe 404. A filter sleeve 405 is movably clamped between the clamping top pipe 402 and the sliding exhaust pipe 404. A filter inner core 406 is filled inside the filter sleeve 405. The positions between the clamping top pipe 402 and the sliding exhaust pipe 404 correspond to each other. And exhaust holes are evenly arranged at equal intervals along the circumferential direction at the outer bottom of the sliding exhaust pipe 404. The outer top and bottom of the filter sleeve 405 are closely slidably clamped between the inner walls of the clamping top pipe 402 and the sliding exhaust pipe 404 respectively; A swinging bent rod 407 is movably installed at the position corresponding to the bottom of the sliding exhaust pipe 404 on the bottom surface of the circuit breaker body 1. A supporting arc block 408 is fixedly connected to the front end of the swinging bent rod 407. A counterweight tail block 409 is fixedly connected to the tail end of the swinging bent rod 407. A supporting spring 410 is embedded in the middle of the top surface of the counterweight tail block 409. The swinging bent rod 407 swings along the bottom of the circuit breaker body 1 through an arc-shaped block and a rotating shaft. And the swinging bent rod 407 rotates horizontally through the rotating block at the bottom of the arc-shaped block. The top arc surface of the supporting arc block 408 is closely attached to the bottom arc surface of the sliding exhaust pipe 404. The top end of the supporting spring 410 is fixedly connected to the bottom surface of the circuit breaker body 1; Installation end boxes 411 are fixedly connected to both ends of the bottom surface of the circuit breaker body 1. A balance side box 412 is fixedly connected to one side of the installation end box 411 through a pipeline. A sealing cover plate 413 is installed on the top end of the balance side box 412 through bolts. Pressing springs 414 are fixedly connected to the bottom surface of the sealing cover plate 413 at equal intervals. A counterweight pressing block 415 is fixedly connected to the end of the pressing spring 414 corresponding to the inside of the balance side box 412. And insulating transmission oil is filled at the inner bottom of the balance side box 412; Installation sleeves 416 are fixedly connected to the bottom surface of the circuit breaker body 1 at equal intervals corresponding to the inside of the installation end box 411. A liquid guiding rectangular pipe 417 is fixedly connected between the installation sleeves 416. A balance spring 418 is fixedly connected to the middle of the inner top end of the installation sleeve 416. A guiding sleeve 419 is fixedly connected to the end of the balance spring 418 corresponding to the inside of the installation sleeve 416. The outer side of the counterweight pressing block 415 is closely slidably attached to the inner wall of the balance side box 412. The pipeline at the bottom of the balance side box 412 is communicated with the inner cavity of the installation sleeve 416. The outer side of the top end of the guiding sleeve 419 is closely slidably attached to the inner wall of the installation sleeve 416; A plurality of bottom ends of the guiding sleeves 419 are fixedly connected together with a sliding flat block 420. Balancing rubber rods 421 are embedded and installed on the outer sides of the sliding flat block 420. A plurality of ends of the balancing rubber rods 421 are fixedly connected together with a mounting bottom frame 422. A mounting bottom plate 423 is fixedly connected to the bottom end of the mounting bottom frame 422. A transmission spring piece 424 is fixedly connected to one side of the mounting bottom frame 422. The bottom surface of the sliding flat block 420 is in close sliding fit with the inner bottom surface of the mounting bottom frame 422. Mounting holes are formed at the end of the mounting bottom plate 423. One side of the top of the transmission spring piece 424 is in close fit with the side surface of the counterweight tail block 409. Through the mutual cooperation among the components inside the pressure relief and protection buffer mechanism 4, the pressure relief process and the buffer process during the use of the pole-mounted circuit breaker are optimized. Through the mutual cooperation among the components connected to the end of the pressure relief top valve 401, the gas generated during the arc extinguishing process inside the arc extinguishing chamber 2 can be quickly discharged, and the particulate matters and harmful components in the discharged gas are intercepted and adsorbed. Furthermore, the convenience of the pressure relief of the pole-mounted circuit breaker is effectively improved. Meanwhile, the pollution of the surrounding environment caused by the emissions of the pole-mounted circuit breaker is effectively prevented. Moreover, due to the spliced structural design of the filter sleeve 405, the filter sleeve 405 and the filter inner core 406 are more convenient to replace during use. Furthermore, the convenience and environmental protection of the pressure relief process of the pole-mounted circuit breaker are effectively improved; Meanwhile, through the design of the multi-layer flexible structure at the bottom of the installation end box 411, the pole-mounted circuit breaker can be buffered through multiple layers during use to buffer and protect the circuit breaker body 1 located in the upper layer, effectively preventing the influence of the vibration generated during the driving of the vehicle on the pole-mounted circuit breaker installed by the roadside. Meanwhile, by using the design of liquid transmission between the balance side box 412 and the installation sleeve 416, the flexible support assembly at the bottom of the circuit breaker body 1 will not undergo serious deformation after long-term support. And through the detachable structural design of the compression spring 414 and the counterweight pressing block 415, the maintenance of the bottom components of the pole-mounted circuit breaker is more convenient, further improving the overall use stability and use safety of the pole-mounted circuit breaker. And through the design of the inertia of the counterweight tail block 409 itself and the flexible transmission of the transmission spring piece 424, when the pole-mounted circuit breaker is subjected to an instantaneous severe impact, the degree of damage to the pole-mounted circuit breaker can be indirectly reflected through the dropping of the filter sleeve 405, so as to facilitate the maintenance personnel to discover the faults of the pole-mounted circuit breaker, further improving the use safety and maintenance convenience of the pole-mounted circuit breaker; A top telescopic protection mechanism 5 is arranged on the top of the sealing cover plate 413. The top telescopic protection mechanism 5 is used to protect the top of the pole-mounted circuit breaker so that the pole-mounted circuit breaker can adapt to a more severe environment; The top telescopic protection mechanism 5 includes a mounting small plate 501, a support narrow rod 502, a driving top box 503, a support side rod 504, a limit sleeve 505, a scroll spring 506, a central mounting shaft 507, a protection cover roll 508, a guiding end strip 509, a shielding top plate 510, a mounting arc box 511, a rectangular protection box 512, a transmission belt pulley 513, a driving bottom wheel 514, a transmission tooth ring 515, a transmission tooth belt 516, a mounting small block 517, a telescopic driving rod 518 and a driving rack 519; Mounting small plates 501 are fixedly connected to the middle parts of the top surfaces of the two sealing cover plates 413. A support narrow rod 502 is mounted on the top surface of the mounting small plate 501 by bolts. The middle part of the top end of the support narrow rod 502 is fixedly connected to a driving top box 503. Both bottom sides of the driving top box 503 are fixedly connected to support side rods 504, and the included angle between the bottom surface of the support side rod 504 and the side surface of the support narrow rod 502 is 85 degrees; Limit sleeves 505 are fixedly clamped at both ends inside the driving top box 503. A scroll spring 506 is installed inside the limit sleeve 505. The inner side of the scroll spring 506 is connected to a central mounting shaft 507. The inner side of the limit sleeve 505 is fixedly connected to the outer end of the scroll spring 506. The central mounting shaft 507 penetrates through the side surface of the driving top box 503, and the outer side of the central mounting shaft 507 is rotatably connected to the side wall of the driving top box 503; A protection cover roll 508 is coiled around the middle part of the outer side of the central mounting shaft 507. A guiding end strip 509 is fixedly connected to the end of the protection cover roll 508 corresponding to the side surface of the support side rod 504. A shielding top plate 510 is fixedly connected between the two driving top boxes 503. The protection cover roll 508 is composed of multiple rigid strip plates hinged together. The end of the guiding end strip 509 is inserted into the guide groove on the side surface of the support side rod 504, and the end of the guiding end strip 509 is slidably fitted with the guide groove on the side surface of the support side rod 504; Mounting arc boxes 511 are fixedly connected to both sides of the side surface of the driving top box 503. A rectangular protection box 512 is fixedly connected at the position between the two mounting arc boxes 511. A transmission belt pulley 513 is sleeved at the position corresponding to the top of the inner side of the mounting arc box 511 at the end of the central mounting shaft 507. A driving bottom wheel 514 is rotatably installed at the bottom of the inner side of the mounting arc box 511 through a rotating shaft. A transmission tooth ring 515 is fixedly sleeved on the outer side edge of the driving bottom wheel 514. A transmission tooth belt 516 is tightly sleeved between the transmission belt pulley 513 and the driving bottom wheel 514; A mounting block 517 is fixedly connected to the side of the supporting narrow rod 502 at a position inside the rectangular protection box 512, and a telescopic driving rod 518 is fixedly connected to the middle of the top of the mounting block 517. A driving rack 519 is fixedly sleeved on the outer side of the telescopic driving rod 518. The driving rack 519 is meshed with the transmission gear rings 515 on both sides. The telescopic driving rod 518 is powered by an external power supply. The mutual cooperation between the internal components of the top telescopic protection mechanism 5 effectively improves the convenience of the overall protection of the column-mounted circuit breaker. By supporting the narrow rod 502 and the frame-like components thereon, The structural design effectively reduces the windward area of ​​each component, and prevents the pole-mounted circuit breaker from shaking due to the increase of the windward surface during use. The retractable structural design of the protective cover roll 508 can protect the top of the pole-mounted circuit breaker through the protective cover roll 508 in severe weather, thereby effectively preventing hail and snowstorms from directly affecting the top of the pole-mounted circuit breaker, and preventing severe weather from directly damaging the pole-mounted circuit breaker and reducing the service life of the pole-mounted circuit breaker, thereby effectively improving the environmental adaptability of the pole-mounted circuit breaker and extending the service life of the pole-mounted circuit breaker. At the same time, by installing the arc box 511 and the mutual cooperation between the internal components of the rectangular protective box 512, the retraction and extension process of the protective cover roll 508 is made faster and more convenient, and the retraction and energy storage of the volute spring 506 ensures the flow of the protective cover roll 508. At the same time, the long and flat structural design of the transmission belt 516 and the driving rack 519 effectively compresses the occupied space on the side of the pole-mounted circuit breaker, further improving the overall installation convenience and transmission smoothness of the pole-mounted circuit breaker.

[0021] Working principle and use process of the present invention: In the process of using the pole-mounted circuit breaker of the present invention, it is necessary to first install it at a suitable position, install each component to the bottom of the circuit breaker body 1 by installing the end box 411 in cooperation with the installation sleeve 416, and then install the circuit breaker body 1 to a suitable position by installing the bottom plate 423 in cooperation with the bolts, and connect the corresponding cables to the two ends of the pole-mounted circuit breaker. When the pole-mounted circuit breaker is used, the arc is extinguished through the arc extinguishing chamber 2, which will cause the internal pressure of the arc extinguishing chamber 2 to rise; When it is necessary to relieve the pressure inside the arc extinguishing chamber 2, the pressure relief top valve 401 is opened to discharge the excess gas inside the arc extinguishing chamber 2 into the filter sleeve 405 through the clamping top pipe 402, and the particulate matter and harmful components in the gas are adsorbed through the filter inner core 406, and then the filtered gas is discharged into the atmosphere through the exhaust slide pipe 404, so as to achieve pressure relief inside the arc extinguishing chamber 2, so that the pressure inside the arc extinguishing chamber 2 is always maintained within a suitable range; And through the mutual cooperation between the gravity of the counterweight tail block 409 and the elastic force of the support spring 410, the filter sleeve 405 and the filter inner core 406 can be conveniently clamped between the clamping top pipe 402 and the exhaust slide pipe 404, making the installation and disassembly process of the filter sleeve 405 faster and more convenient. At the same time, by utilizing the swingable and rotatable characteristic of the swing bent rod 407, when the pole-mounted circuit breaker is subjected to a strong external impact, the swing bent rod 407 will swing greatly under the influence of the inertia of the counterweight tail block 409, so that the support arc block 408 is separated from the bottom of the exhaust slide pipe 404, and then the limit at the bottom of the exhaust slide pipe 404 is cancelled, enabling the filter sleeve 405 to automatically fall off after the pole-mounted circuit breaker is subjected to a strong impact, so as to facilitate maintenance personnel to indirectly judge the severity of the impact on the pole-mounted circuit breaker; When the pole-mounted circuit breaker is subjected to periodic slight vibration impacts, through the alternating compression of multiple balance rubber rods 421, when the pole-mounted circuit breaker is vibrating, the sliding flat block 420 buffers the horizontal vibration through the translation of the sliding flat block 420. When the installation bottom frame 422 and the bottom surface of the circuit breaker body 1 have a large relative movement, the transmission reed 424 can drive the counterweight tail block 409 to swing horizontally, so that the support arc block 408 is separated from the bottom end of the exhaust slide pipe 404, and the filter sleeve 405 drops; Then, through the alternating expansion and contraction of the balance spring 418, the guide sleeve 419 is guided to perform telescopic sliding along the inside of the installation sleeve 416, and the liquid guide rectangular pipe 417 communicates the inner cavities of the installation sleeves 416. Furthermore, the transmission oil inside the balance side box 412 can flow freely between the inner cavities of the installation sleeve 416 and the liquid guide rectangular pipe 417. Through the gravity of the counterweight block 415 and the elastic force of the compression spring 414, the transmission oil at the bottom of the balance side box 412 is always maintained within a suitable pressure range. Through the compression of the compression spring 414, the lifting of the counterweight block 415, and the expansion and contraction of the balance spring 418, the vertical vibration received by the pole-mounted circuit breaker is buffered to improve the overall stability of the pole-mounted circuit breaker; During the process of protecting the pole-mounted circuit breaker, each component is installed on the top of the pole-mounted circuit breaker by installing the small plate 501 and cooperating with the supporting narrow rod 502. When it is necessary to protect the top of the pole-mounted circuit breaker in bad weather, the elongation of the telescopic driving rod 518 at the top of the installed small block 517 drives the driving rack 519 to rise. During the rising process of the driving rack 519, the transmission gear ring 515 is driven to rotate. The rotation of the transmission gear ring 515 drives the driving bottom wheel 514 to rotate. During the rotation of the driving bottom wheel 514, the transmission belt wheel 513 is driven to rotate through the transmission belt 516. Furthermore, the central mounting shaft 507 is driven to rotate through the transmission belt wheel 513. During the rotation of the central mounting shaft 507, the protective cover roll 508 is released. The driving force generated during the rotation of the central mounting shaft 507 squeezes and pushes the protective cover roll 508 out from both sides of the shielding top plate 510. Utilizing the gravity of the protective cover roll 508 itself and the gravity of the guiding end strip 509, the protective cover roll 508 is assisted to slide and cover along the side surface of the inclined supporting side rod 504. Thus, the top of the pole-mounted circuit breaker is protected by the protective cover roll 508, effectively improving the overall service life of the pole-mounted circuit breaker; And during the rotation of the central mounting shaft 507, the scroll spring 506 is synchronously driven to wind and store energy. When it is necessary to wind the protective cover roll 508 after use, the contraction of the telescopic driving rod 518 drives the driving rack 519 to move downward, and the elastic potential energy stored in the scroll spring 506 is used to drive the central mounting shaft 507 to wind reversely, so as to realize the winding of the protective cover roll 508, thereby effectively improving the convenience of protecting the pole-mounted circuit breaker; The protection of the protective cover roll 508 can intercept the hail and large raindrops hitting the outside of the filter sleeve 405 and the filter inner core 406, preventing the filter sleeve 405 from falling off in bad weather, so as to prevent the pollutants adsorbed inside the filter inner core 406 from leaking and polluting the surrounding environment, thereby improving the overall environmental protection of the pole-mounted circuit breaker.

[0022] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pole-mounted circuit breaker for facilitating pressure relief, comprising a circuit breaker body (1), characterized in that: An arc extinguishing chamber (2) is arranged on the top of the circuit breaker body (1), and a current transformer (3) is arranged on one side of the arc extinguishing chamber (2); A pressure relief protection buffer mechanism (4) is provided at the bottom of the circuit breaker body (1), and the pressure relief protection buffer mechanism (4) is used to assist in pressure relief of the pole-mounted circuit breaker and to assist in adjusting the installation method of the pole-mounted circuit breaker, so as to isolate and intercept the bottom of the pole-mounted circuit breaker; The pressure relief protection buffer mechanism (4) comprises a pressure relief top valve (401); The arc extinguishing chamber (2) is connected to a pressure relief top valve (401) on the top side thereof, a clamping top pipe (402) is connected to the middle of one side of the pressure relief top valve (401), a mounting small tube (403) is connected to the side of the circuit breaker body (1), an exhaust sliding tube (404) is slidably clamped to the top of the inner side of the mounting small tube (403), a filter sleeve (405) is movably clamped between the clamping top pipe (402) and the exhaust sliding tube (404), and a filter inner core (406) is filled inside the filter sleeve (405); The bottom surface of the circuit breaker body (1) is mounted with a swinging bent rod (407), a supporting arc block (408) and a counterweight tail block (409), and the top surface of the counterweight tail block (409) is embedded with a supporting spring (410).

2. A pole mounted circuit breaker for facilitating pressure relief according to claim 1, characterized in that: The positions of the clamping top pipe (402) and the exhaust sliding pipe (404) correspond to each other, and exhaust holes are evenly and evenly opened at the outer bottom of the exhaust sliding pipe (404) in a circumferential direction, and the outer sides of the top and bottom ends of the filter sleeve (405) are tightly slidably clamped between the clamping top pipe (402) and the inner wall of the exhaust sliding pipe (404), respectively.

3. A pole mounted circuit breaker for facilitating pressure relief according to claim 1, characterized in that: The swinging bent rod (407) swings along the bottom of the circuit breaker body (1) via the arc block and the rotating shaft, and the swinging bent rod (407) rotates horizontally via the rotating block at the bottom of the arc block, the top arc surface of the supporting arc block (408) is tightly fitted with the bottom arc surface of the exhaust slide pipe (404), and the top of the supporting spring (410) is fixedly connected to the bottom surface of the circuit breaker body (1).

4. A pole mounted circuit breaker for facilitating pressure relief according to claim 1, characterized in that: Both ends of the bottom surface of the circuit breaker body (1) are fixedly connected to mounting end boxes (411), one side of the mounting end box (411) is fixedly connected to a balancing side box (412) via a pipeline, a sealing cover plate (413) is fixedly connected to the top of the balancing side box (412) via bolts, a compression spring (414) is evenly and equidistantly fixedly connected to the bottom surface of the sealing cover plate (413), a counterweight block (415) is fixedly connected to the end of the compression spring (414) at a position corresponding to the inside of the balancing side box (412), and the bottom of the inner side of the balancing side box (412) is filled with insulating transmission oil; The bottom surface of the circuit breaker body (1) is evenly and evenly fixedly connected with mounting sleeves (416) at positions corresponding to the inner side of the mounting end box (411); a liquid guide rectangular tube (417) is fixedly connected between the mounting sleeves (416); a balance spring (418) is fixedly connected to the middle of the inner top of the mounting sleeve (416); and a guide sleeve (419) is fixedly connected to the end of the balance spring (418) at a position corresponding to the inside of the mounting sleeve (416); The bottom ends of the plurality of guide sleeves (419) are commonly fixedly connected to a sliding flat block (420), the outer sides of the sliding flat blocks (420) are all embedded with balancing rubber rods (421), the ends of the plurality of balancing rubber rods (421) are commonly fixedly connected to a mounting bottom frame (422), the bottom end of the mounting bottom frame (422) is fixedly connected to a mounting bottom plate (423), and one side of the mounting bottom frame (422) is fixedly connected to a transmission reed (424).

5. A pole mounted circuit breaker for facilitating pressure relief according to claim 4, characterized in that: The outer side of the counterweight pressing block (415) is tightly slidably fitted with the inner wall of the balancing side box (412), the bottom pipe of the balancing side box (412) and the inner cavity of the installation sleeve (416) are connected to each other, and the outer side of the top end of the guide sleeve (419) is tightly slidably fitted with the inner wall of the installation sleeve (416).

6. A pole mounted circuit breaker for facilitating pressure relief according to claim 4, characterized in that: The bottom surface of the sliding flat block (420) is tightly slidably fitted with the inner bottom surface of the mounting bottom frame (422); a mounting hole is provided at the end of the mounting bottom plate (423); and one side of the top of the transmission reed (424) is tightly fitted with the side surface of the counterweight tail block (409).

7. A pole mounted circuit breaker for facilitating pressure relief according to claim 4, characterized in that: A top telescopic protection mechanism (5) is provided on the top of the sealing cover plate (413), and the top telescopic protection mechanism (5) is used to protect the top of the pole-mounted circuit breaker so that the pole-mounted circuit breaker can adapt to a more severe environment; The top telescopic protection mechanism (5) comprises a small mounting plate (501); The middle parts of the top surfaces of the two sealing cover plates (413) are fixedly connected with a mounting plate (501), the top surfaces of the mounting plates (501) are fixedly connected with a supporting narrow rod (502) via bolts, the middle parts of the top ends of the supporting narrow rods (502) are fixedly connected with a driving top box (503), the bottoms of both sides of the driving top box (503) are fixedly connected with supporting side rods (504), and the angle between the bottom surfaces of the supporting side rods (504) and the side surfaces of the supporting narrow rods (502) is eighty-five degrees; Both ends of the interior of the driving top box (503) are fixedly clamped with a limiting sleeve (505), a spiral spring (506) is installed inside the limiting sleeve (505), the inner side of the spiral spring (506) is connected to a central installation shaft (507), a protective cover roll (508) is coiled around the middle of the outer side of the central installation shaft (507), the end of the protective cover roll (508) is fixedly connected to a guide end strip (509) corresponding to the side of the supporting side rod (504), and a shielding top plate (510) is fixedly connected between the two driving top boxes (503); Both sides of the side of the driving top box (503) are fixedly connected to mounting arc boxes (511), a rectangular protection box (512) is fixedly connected between the two mounting arc boxes (511), a driving pulley (513) is sleeved at the end of the central mounting shaft (507) corresponding to the inner top position of the mounting arc box (511), a driving bottom wheel (514) is rotatably mounted on the inner bottom of the mounting arc box (511) via a rotating shaft, a driving gear ring (515) is fixedly sleeved on the outer edge of the driving bottom wheel (514), and a driving gear belt (516) is tightly sleeved between the driving pulley (513) and the driving bottom wheel (514); A mounting block (517) is fixedly connected to the side of the supporting narrow rod (502) at a position inside the rectangular protection box (512), a telescopic driving rod (518) is fixedly connected to the middle of the top of the mounting block (517), and a driving rack (519) is fixedly sleeved on the outside of the telescopic driving rod (518).

8. A pole mounted circuit breaker for facilitating pressure relief according to claim 7, characterized in that: The inner side of the limiting sleeve (505) is fixedly connected to the outer end of the spiral spring (506); the central installation shaft (507) passes through the side of the driving top box (503); and the outer side of the central installation shaft (507) is rotatably connected to the side wall of the driving top box (503).

9. A pole mounted circuit breaker for facilitating pressure relief according to claim 7, characterized in that: The protective cover roll (508) is formed by hingedly connecting a plurality of hard strips, and the end of the guide end strip (509) is inserted into the side guide groove of the supporting side rod (504), and the end of the guide end strip (509) is slidably fitted with the side guide groove of the supporting side rod (504).

10. A pole mounted circuit breaker for facilitating pressure relief according to claim 7, characterized in that: The driving rack (519) is meshed with the transmission gear rings (515) on both sides, and the telescopic driving rod (518) is powered by an external power source.

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