A pole-mounted circuit breaker convenient for pressure relief

Abstract

The present invention discloses a pole-mounted circuit breaker that is convenient for pressure relief, and relates to the technical field of circuit breakers. The circuit breaker comprises a circuit breaker body, an arc extinguishing chamber is provided on the top of the circuit breaker body, a current transformer is provided on one side of the arc extinguishing chamber, a pressure relief top valve is fixedly connected to the side surface of the top of the arc extinguishing chamber through a pipeline, a clamping top pipe is fixedly connected to the middle part of one side of the pressure relief top valve, and a small installation tube is connected to the side surface of the circuit breaker body. In the present invention, the gas generated during the arc extinguishing process in the arc extinguishing chamber can be quickly discharged through the mutual cooperation between the components connected to the end of the pressure relief top valve, and the particulate matter and harmful components in the discharged gas are intercepted and adsorbed, thereby effectively improving the convenience of pressure relief of the pole-mounted circuit breaker, and the spliced structural design of the filter sleeve makes it more convenient 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.

Description

Technical Field

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

[0002] Pole-mounted circuit breakers are large control switches installed and operated on electric poles. The power research and manufacturing technologies 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 breaking capacity, high continuous breaking times, frequent operation, low operating noise, and no fire hazard.

[0003] For example, the existing Chinese patent, application number 202021313403.9, discloses an online SF6 filtration device. It proposes that the gas in the gas chamber of the SF6 circuit breaker flows into the main distillation purification tower through a vacuum pump and a main compressor. Under the action of the first cycle compressor, the gas is repeatedly dried and filtered, and finally clean SF6 gas is separated. This extends the service life of the SF6 circuit breaker, reduces the downtime of the power grid, and improves operating efficiency. It is safe, labor-saving, simple, and efficient.

[0004] At the same time, the existing Chinese patent, CN201822261850.3, is named as the pole-mounted circuit breaker operation downward movement device, which realizes the downward movement of the operating device, solving a series of problems such as the manual operating mechanism is too high, the difficulty of high-altitude operation (using safety belts and foot buckles), and the need for personnel with "height climbing certificates" to operate.

[0005] However, due to the lack of protective components during the use of the pole-mounted circuit breaker, the high-temperature and high-pressure gas generated by the pole-mounted circuit breaker cannot be discharged and filtered in time, which in turn causes the internal pressure of the pole-mounted circuit breaker to rise, affecting the normal and safe use of the pole-mounted circuit breaker. Summary of the Invention

[0006] The present invention provides a pole-mounted circuit breaker that facilitates pressure relief, which can effectively solve the problem raised in the above-mentioned background art that, due to the lack of protective components during use, the high-temperature and high-pressure gas generated by the pole-mounted circuit breaker cannot be discharged and filtered in time, thereby causing the internal pressure of the pole-mounted circuit breaker to rise, affecting the normal and safe use of the pole-mounted circuit breaker.

[0007] To achieve the above object, the present invention provides the following technical solution: a pole-mounted circuit breaker that facilitates pressure relief, comprising a circuit breaker body, an arc extinguishing chamber provided on the top of the circuit breaker body, and a current transformer provided on one side of the arc extinguishing chamber;

[0008] A pressure relief protection buffer mechanism is provided at the bottom of the circuit breaker body, which is used to assist in pressure relief of the pole-mounted circuit breaker and assist in adjusting the installation mode of the pole-mounted circuit breaker to isolate and intercept the bottom of the pole-mounted circuit breaker;

[0009] The pressure relief protection buffer mechanism includes a pressure relief top valve;

[0010] A pressure relief valve is connected to the top side of the arc extinguishing chamber, a clamping top pipe is connected to the middle of one side of the pressure relief top valve, a small installation tube is connected to the side of the circuit breaker body, an exhaust slide pipe is slidably clamped to the top of the inner side of the small installation tube, a filter sleeve is movably clamped between the clamping top pipe and the exhaust slide pipe, and a filter core is filled in the filter sleeve;

[0011] The bottom surface of the circuit breaker body is equipped with a swinging bent rod, a supporting arc block and a counterweight tail block, and the top surface of the counterweight tail block is embedded with a supporting spring.

[0012] Preferably, the positions of the clamping top pipe and the exhaust slide pipe correspond to each other, and exhaust holes are evenly spaced along the circumferential direction at the outer bottom of the exhaust slide pipe, and the outer sides of the top and bottom ends of the filter sleeve are tightly slidably clamped between the clamping top pipe and the inner wall of the exhaust slide pipe respectively.

[0013] Preferably, the swinging bent arm swings along the bottom of the circuit breaker body through the arc block and the rotating shaft, and the swinging bent arm rotates horizontally through the rotating block at the bottom of the arc block, the top arc surface of the supporting arc block is tightly fitted with the bottom arc surface of the exhaust slide pipe, and the top of the supporting spring is fixedly connected to the bottom surface of the circuit breaker body.

[0014] Preferably, both ends of the bottom surface of the circuit breaker body are fixedly connected to mounting end boxes, one side of the mounting end box is fixedly connected to a balancing side box via a pipe, a sealing cover plate is fixedly connected to the top of the balancing side box via bolts, a compression spring is fixedly connected to the bottom surface of the sealing cover plate at equal intervals, a counterweight pressure block is fixedly connected to the end of the compression spring at a position corresponding to the inside of the balancing side box, and the inner bottom of the balancing side box is filled with insulating transmission oil;

[0015] The bottom surface of the circuit breaker body is evenly and evenly fixedly connected to the inner side of the mounting end box at a position corresponding to the mounting end box, a liquid guide rectangular tube is fixedly connected between the mounting sleeves, a balance spring is fixedly connected to the middle of the inner top of the mounting sleeve, and a guide sleeve is fixedly connected to the end of the balance spring at a position corresponding to the inner side of the mounting sleeve;

[0016] The bottom ends of the multiple guide sleeves are fixedly connected to a sliding flat block, and a balancing rubber rod is embedded and installed on the outside of the sliding flat block. The ends of the multiple balancing rubber rods are fixedly connected to a mounting bottom frame, and the bottom end of the mounting bottom frame is fixedly connected to a mounting base plate, and a transmission spring is fixedly connected to one side of the mounting bottom frame.

[0017] Preferably, the outer side of the counterweight block is in tight sliding fit with the inner wall of the balancing side box, the bottom pipe of the balancing side box is connected to the inner cavity of the installation sleeve, and the outer side of the top end of the guide sleeve is in tight sliding fit with the inner wall of the installation sleeve.

[0018] Preferably, the bottom surface of the sliding block is tightly slidably fitted with the inner bottom surface of the mounting base frame, a mounting hole is provided at the end of the mounting base plate, and the top side of the transmission spring is tightly fitted with the side surface of the counterweight tail block.

[0019] Preferably, a top telescopic protection mechanism is provided on the top of the sealing cover plate, and 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;

[0020] The top telescopic protection mechanism includes a small mounting plate;

[0021] The middle part of the top surface of the two sealing cover plates is fixedly connected to a mounting plate, the top surface of the mounting plate is fixedly connected to a narrow support rod by bolts, the middle part of the top end of the narrow support rod is fixedly connected to a driving top box, and the bottom of both sides of the driving top box is fixedly connected to a supporting side rod, and the angle between the bottom surface of the supporting side rod and the side surface of the supporting narrow rod is 85 degrees;

[0022] Both ends of the driving top box are fixedly connected to the limiting sleeve, the inner side of the limiting sleeve is installed with a spiral spring, the inner side of the spiral spring is connected to the central installation shaft, the middle part of the outer side of the central installation shaft is coiled with a protective cover roll, the ends of the protective cover roll are fixedly connected to the side surfaces of the supporting side rods, and a shielding top plate is fixedly connected between the two driving top boxes;

[0023] The two sides of the side of the driving top box are fixedly connected to the mounting arc boxes, and a rectangular protective box is fixedly connected at the position between the two mounting arc boxes. The end of the central mounting shaft is sleeved with a transmission pulley corresponding to the top position of the inner side of the mounting arc box. The bottom of the inner side of the mounting arc box is rotatably mounted with a driving bottom wheel through a rotating shaft. The outer edge of the driving bottom wheel is fixedly sleeved with a transmission gear ring, and a transmission toothed belt is tightly sleeved between the transmission pulley and the driving bottom wheel.

[0024] A small mounting block is fixedly connected to the side surface of the narrow supporting rod at a position corresponding to the inner portion of the rectangular protective box. A telescopic driving rod is fixedly connected to the middle portion of the top of the small mounting block. A driving rack is fixedly sleeved on the outer side of the telescopic driving rod.

[0025] Preferably, the inner side of the limiting sleeve is fixedly connected to the outer end of the spiral spring, the central installation shaft passes through the side of the driving top box, and the outer side of the central installation shaft is rotationally connected to the side wall of the driving top box.

[0026] Preferably, the protective cover roll is formed by hingedly connecting a plurality of hard strips, the end of the guide end strip is inserted into the side guide groove of the supporting side rod, and the end of the guide end strip is slidably fitted with the side guide groove of the supporting side rod.

[0027] Preferably, the driving rack is meshed with the transmission gear rings on both sides, and the telescopic driving rod is powered by an external power supply.

[0028] Compared with the prior art, the present invention has the following beneficial effects: the structure of the present invention is scientific and reasonable, and it is safe and convenient to use:

[0029] 1. A pressure relief protection buffer mechanism is provided. Through the mutual cooperation between the various components within the pressure relief protection buffer mechanism, the pressure relief and buffer processes during the use of the pole-mounted circuit breaker are optimized. Through the mutual cooperation between the various components connected to the end of the pressure relief top valve, the gas generated during the arc extinguishing process in 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 pole-mounted circuit breaker pressure relief and effectively preventing the pollution of the surrounding environment by the emissions of the pole-mounted circuit breaker. In addition, the spliced structure design of the filter sleeve makes it easier to replace the filter sleeve and filter core during use, thereby effectively improving the convenience and environmental friendliness of the pole-mounted circuit breaker pressure relief process;

[0030] At the same time, the multi-layer flexible structure design at the bottom of the installation end box allows the pole-mounted circuit breaker to use multiple layers of buffering to provide buffering protection for the circuit breaker body located on the upper layer during use, effectively preventing the pole-mounted circuit breaker installed on the roadside from being affected by the vibration generated by the movement of vehicles. At the same time, the design of liquid transmission between the balancing side box and the mounting sleeve prevents the flexible support assembly at the bottom of the circuit breaker body from serious deformation after long-term support. The removable structure design of the compression spring and counterweight block makes the maintenance of the bottom assembly of the pole-mounted circuit breaker more convenient, further improving the overall stability and safety of the pole-mounted circuit breaker. In addition, the flexible transmission design of the counterweight tail block's own inertia and the transmission spring allows the pole-mounted circuit breaker to be indirectly reflected by the falling filter sleeve when it is subjected to a sudden and severe impact, so that maintenance personnel can detect faults of the pole-mounted circuit breaker, further improving the safety and convenience of maintenance of the pole-mounted circuit breaker.

[0031] 2. A top telescopic protection mechanism is provided. Through the mutual cooperation between the various components within the top telescopic protection mechanism, the overall protection convenience of the pole-mounted circuit breaker is effectively improved. The frame-like structural design of the supporting narrow rod and the various components thereon effectively reduces the windward area of each component, preventing the pole-mounted circuit breaker from shaking due to the increase in 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 severe weather, thereby effectively preventing hail and snowstorms from directly affecting the top of the pole-mounted circuit breaker, 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.

[0032] At the same time, by installing the mutual coordination between the components inside the arc box and the rectangular protective box, the retraction and extension process of the protective cover roll is made faster and more convenient, and the retraction and energy storage of the volute spring ensures the smooth flow of the protective cover roll. At the same time, the flat structure design of the transmission toothed belt and the drive rack effectively compresses the space occupied on the side of the pole-mounted circuit breaker, further improving the overall installation convenience and transmission smoothness of the pole-mounted circuit breaker.

[0033] To sum up, through the mutual cooperation between the pressure relief protection buffer mechanism and the internal components of the top telescopic protection mechanism, the overall installation and use protection process of the pole-mounted circuit breaker is optimized. The bottom multi-layer buffer installation structure effectively reduces the impact of road vibration on the internal structure of the pole-mounted circuit breaker. The auxiliary guide filtering structure optimizes the pressure relief process of the pole-mounted circuit breaker, effectively improving the convenience and environmental protection of the pressure relief process of the pole-mounted circuit breaker. At the same time, the top of the pole-mounted circuit breaker is protected by the protective cover roll, which reduces the impact of the external environment on the pole-mounted circuit breaker, improves the overall environmental adaptability and service life of the pole-mounted circuit breaker, and further improves the convenience and safety of using the pole-mounted circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0035] In the attached figure:

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 It is a structural schematic diagram of the bottom of the circuit breaker body of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the pressure relief protection buffer mechanism of the present invention;

[0039] Figure 4 This is a structural diagram of the installation of the counterweight pressing block of the present invention;

[0040] Figure 5 This is a schematic structural diagram of the installation of the counterweight tail block of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure inside the mounting end box of the present invention;

[0042] Figure 7 It is a structural schematic diagram of the top telescopic protection mechanism of the present invention;

[0043] Figure 8 This is a schematic structural diagram of the drive rack installation of the present invention;

[0044] Figure 9 This is a schematic structural diagram of the installation of the scroll spring of the present invention;

[0045] Numbers in the figure: 1, circuit breaker body; 2, arc extinguishing chamber; 3, current transformer;

[0046] 4. Pressure relief protection buffer mechanism; 401. Pressure relief top valve; 402. Clamping top pipe; 403. Installing small pipe; 404. Exhaust slide pipe; 405. Filter sleeve; 406. Filter inner core; 407. Swinging bent rod; 408. Support arc block; 409. Counterweight tail block; 410. Support spring; 411. Installing end box; 412. Balancing side box; 413. Sealing cover plate; 414. Compression spring; 415. Counterweight pressing block; 416. Installing sleeve; 417. Liquid guide rectangular tube; 418. Balancing spring; 419. Guide sleeve; 420. Sliding flat block; 421. Balancing rubber rod; 422. Installing bottom frame; 423. Installing bottom plate; 424. Transmission reed;

[0047] 5. Top telescopic protection mechanism; 501. Install small plate; 502. Support narrow rod; 503. Drive top box; 504. Support side rod; 505. Limit sleeve; 506. Volute spring; 507. Center installation shaft; 508. Protective cover roll; 509. Guide end strip; 510. Shield top plate; 511. Install arc box; 512. Rectangular protection box; 513. Drive pulley; 514. Drive bottom wheel; 515. Drive gear ring; 516. Drive gear belt; 517. Install small block; 518. Telescopic drive rod; 519. Drive rack. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described below 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.

[0049] Example: Figure 1-9As shown, the present invention provides a technical solution, a pole-mounted circuit breaker that is convenient for pressure relief, comprising a circuit breaker body 1, an arc extinguishing chamber 2 is provided on the top of the circuit breaker body 1, and a current transformer 3 is provided on one side of the arc extinguishing chamber 2;

[0050] A pressure relief protection buffer mechanism 4 is provided at the bottom of the circuit breaker body 1. 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 mode of the pole-mounted circuit breaker so as to isolate and intercept the bottom of the pole-mounted circuit breaker.

[0051] The pressure relief protection buffer mechanism 4 includes a pressure relief top valve 401, a clamping top pipe 402, a mounting small pipe 403, an exhaust slide pipe 404, a filter sleeve 405, a filter inner core 406, a swinging bent rod 407, a supporting arc block 408, a counterweight tail block 409, a support spring 410, a mounting end box 411, a balancing side box 412, a sealing cover plate 413, a pressing spring 414, a counterweight pressing block 415, a mounting sleeve 416, a liquid guiding rectangular tube 417, a balancing spring 418, a guide sleeve 419, a sliding flat block 420, a balancing rubber rod 421, a mounting bottom frame 422, a mounting bottom plate 423 and a transmission reed 424;

[0052] A pressure relief valve 401 is fixedly connected to the top side of the arc extinguishing chamber 2 through a pipeline. A clamping top pipe 402 is fixedly connected to the middle of one side of the pressure relief top valve 401. A mounting small pipe 403 is fixedly connected to the side of the circuit breaker body 1 at a position corresponding to the bottom of the clamping top pipe 402. An exhaust slide pipe 404 is slidably clamped to the top of the inner side of the mounting small pipe 403. The mounting small pipe 403 is used to limit and guide the exhaust slide pipe 404. A filter sleeve 405 is movably clamped between the clamping top pipe 402 and the exhaust slide pipe 404. The filter sleeve 405 is filled with a filter core 406. The positions of the clamping top pipe 402 and the exhaust slide pipe 404 correspond to each other, and exhaust holes are evenly spaced on the outer bottom of the exhaust slide pipe 404 in the circumferential direction. 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 slide pipe 404 respectively.

[0053] A swinging bent rod 407 is movably installed on the bottom surface of the circuit breaker body 1 at a position corresponding to the bottom of the exhaust slide pipe 404. The front end of the swinging bent rod 407 is fixedly connected to a support arc block 408, and the rear end of the swinging bent rod 407 is fixedly connected to a counterweight tail block 409. A support 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 the arc block and the rotating shaft, and the swinging bent rod 407 rotates horizontally through the rotating block at the bottom of the arc block. The top arc surface of the support arc block 408 is tightly fitted with the bottom arc surface of the exhaust slide pipe 404, and the top of the support spring 410 is fixedly connected to the bottom surface of the circuit breaker body 1.

[0054] 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 pipe. A sealing cover plate 413 is fixed to the top of the balancing side box 412 via bolts. Compression springs 414 are evenly and evenly fixed to the bottom surface of the sealing cover plate 413. The ends of the compression springs 414 are fixedly connected to the corresponding positions inside the balancing side box 412. The bottom of the balancing side box 412 is filled with insulating transmission oil.

[0055] Mounting sleeves 416 are evenly and equidistantly fixedly connected to the bottom surface of the circuit breaker body 1 at positions corresponding to the inner side of the mounting end box 411. A liquid-guiding rectangular tube 417 is fixedly connected between the mounting sleeves 416. A balancing spring 418 is fixedly connected to the middle of the inner top of the mounting sleeve 416. A guide sleeve 419 is fixedly connected to the end of the balancing spring 418 at a position corresponding to the inner side of the mounting sleeve 416. The outer side of the counterweight block 415 slides tightly against the inner wall of the balancing side box 412. The bottom pipe of the balancing side box 412 is connected to the inner cavity of the mounting sleeve 416. The outer side of the top of the guide sleeve 419 slides tightly against the inner wall of the mounting sleeve 416.

[0056] The bottom ends of multiple guide sleeves 419 are commonly fixedly connected to a sliding flat block 420, and a balancing rubber rod 421 is embedded and installed on the outside of the sliding flat block 420. The ends of multiple balancing rubber rods 421 are commonly fixedly connected to a mounting base frame 422, and the bottom end of the mounting base frame 422 is fixedly connected to a mounting base plate 423. A transmission spring 424 is fixedly connected to one side of the mounting base frame 422. The bottom surface of the sliding flat block 420 and the inner bottom surface of the mounting base frame 422 are tightly slidably fitted. A mounting hole is opened at the end of the mounting base plate 423, and the top side of the transmission spring 424 is tightly fitted with the side surface of the counterweight tail block 409. Through the mutual cooperation between the various components inside the pressure relief protection buffer mechanism 4 , optimizes the pressure relief process and buffer process during the use of the pole-mounted circuit breaker. Through the mutual cooperation between the various 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 matter and harmful components in the discharged gas are intercepted and adsorbed, thereby effectively improving the convenience of the pole-mounted circuit breaker pressure relief, and effectively preventing the pollution of the surrounding environment by the emissions of the pole-mounted circuit breaker. In addition, the spliced structural design of the filter sleeve 405 makes it easier to replace the filter sleeve 405 and the filter inner core 406 during use, thereby effectively improving the convenience and environmental friendliness of the pole-mounted circuit breaker pressure relief process;

[0057] At the same time, the multi-layer flexible structure design at the bottom of the mounting end box 411 allows the pole-mounted circuit breaker to provide buffering protection for the circuit breaker body 1 located on the upper layer through multi-layer buffering during use, effectively preventing the pole-mounted circuit breaker from being affected by the vibration generated by the movement of the car during installation on the roadside. At the same time, the design of liquid transmission between the balancing side box 412 and the mounting sleeve 416 prevents the flexible support assembly at the bottom of the circuit breaker body 1 from being severely deformed after long-term support. The detachable structural design of the compression spring 414 and the counterweight pressure block 415 makes the maintenance of the bottom assembly of the pole-mounted circuit breaker more convenient, further improving the overall stability and safety of the pole-mounted circuit breaker. In addition, the flexible transmission design of the counterweight tail block 409 itself and the transmission spring 424 allows the pole-mounted circuit breaker to be indirectly reflected by the falling filter sleeve 405 when it is subjected to a sudden and severe impact, so that maintenance personnel can find faults in the pole-mounted circuit breaker, further improving the safety of use and the convenience of maintenance of the pole-mounted circuit breaker.

[0058] A top telescopic protection mechanism 5 is provided 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.

[0059] The top telescopic protection mechanism 5 includes a mounting plate 501, a supporting narrow rod 502, a driving top box 503, a supporting side rod 504, a limiting sleeve 505, a volute spring 506, a central mounting shaft 507, a protective cover roll 508, a guide end strip 509, a shielding top plate 510, a mounting arc box 511, a rectangular protection box 512, a drive pulley 513, a driving bottom wheel 514, a transmission gear ring 515, a transmission gear belt 516, a mounting block 517, a telescopic driving rod 518, and a driving rack 519.

[0060] The middle of the top surface of each of the two sealing cover plates 413 is fixedly connected to a mounting plate 501. A narrow support rod 502 is fixedly mounted on the top surface of the mounting plate 501 via bolts. A drive top box 503 is fixedly connected to the middle of the top of the narrow support rod 502. The bottom of each side of the drive top box 503 is fixedly connected to a supporting side rod 504. The angle between the bottom surface of the supporting side rod 504 and the side surface of the supporting narrow rod 502 is 85 degrees.

[0061] Both ends of the driving top box 503 are fixedly connected to the limiting sleeve 505. A scroll spring 506 is installed inside the limiting sleeve 505. The inner side of the scroll spring 506 is connected to the central installation shaft 507. The inner side of the limiting sleeve 505 is fixedly connected to the outer end of the scroll 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.

[0062] A protective cover roll 508 is wound around the middle of the outer side of the central mounting shaft 507. The ends of the protective cover roll 508 are fixedly connected to the sides of the supporting side rods 504 with guide end strips 509. A shielding top plate 510 is fixedly connected between the two driving top boxes 503. The protective cover roll 508 is hingedly formed by multiple hard strips. The ends of the guide end strips 509 are inserted into the guide grooves on the sides of the supporting side rods 504, and the ends of the guide end strips 509 and the guide grooves on the sides of the supporting side rods 504 are slidably fitted therein.

[0063] Both sides of the driving top box 503 are fixedly connected to mounting arc boxes 511, and a rectangular protective box 512 is fixedly connected between the two mounting arc boxes 511. A transmission pulley 513 is sleeved at the end of the central mounting shaft 507 corresponding to the top position of the inner side of the mounting arc box 511. A driving bottom wheel 514 is rotatably mounted on the bottom of the inner side of the mounting arc box 511 via a rotating shaft. A transmission gear ring 515 is fixedly sleeved on the outer edge of the driving bottom wheel 514. A transmission toothed belt 516 is tightly sleeved between the transmission pulley 513 and the driving bottom wheel 514.

[0064] The side of the supporting narrow rod 502 is fixedly connected to the position inside the rectangular protection box 512, and the middle part of the top of the mounting block 517 is fixedly connected to the telescopic driving rod 518. The outer side of the telescopic driving rod 518 is fixedly sleeved with a driving rack 519. The driving rack 519 and the transmission gear rings 515 on both sides are engaged with each other. 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-type components thereon, The structural design effectively reduces the windward area of each component, preventing the pole-mounted circuit breaker from shaking due to the increased windward surface during use. The retractable structure 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, 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.

[0065] 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 vortex spring 506 ensures the flow of the protective cover roll 508. At the same time, the long and flat structural design of the transmission toothed belt 516 and the drive rack 519 effectively compresses the space occupied on the side of the pole-mounted circuit breaker, further improving the convenience of the overall installation of the pole-mounted circuit breaker and the smoothness of transmission.

[0066] The working principle and usage process of the present invention: When using the pole-mounted circuit breaker of the present invention, it needs to be installed in a suitable position first. The components are installed to the bottom of the circuit breaker body 1 by using the mounting end box 411 and the mounting sleeve 416. Then, the circuit breaker body 1 is installed in a suitable position by using the mounting base plate 423 and the bolts. The corresponding cables are connected to both ends of the pole-mounted circuit breaker. When the arc is extinguished through the arc extinguishing chamber 2 during use of the pole-mounted circuit breaker, the pressure inside the arc extinguishing chamber 2 increases.

[0067] When it is necessary to relieve 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 by the filter inner core 406. The filtered gas is then discharged into the atmosphere through the exhaust slide pipe 404, thereby achieving pressure relief inside the arc extinguishing chamber 2 and keeping the pressure inside the arc extinguishing chamber 2 within an appropriate range.

[0068] The filter sleeve 405 and the filter core 406 can be conveniently connected between the clamping top pipe 402 and the exhaust slide pipe 404 by the interaction between the gravity of the counterweight tail block 409 and the elastic force of the support spring 410, making the installation and removal process of the filter sleeve 405 faster and more convenient. At the same time, the swinging and rotating characteristics of the swinging bent rod 407 are utilized. When the pole-mounted circuit breaker is subjected to a violent external impact, the swinging bent rod 407 will swing significantly under the influence of the inertia of the counterweight tail block 409, thereby separating the support arc block 408 from the bottom of the exhaust slide pipe 404, thereby canceling the limit at the bottom of the exhaust slide pipe 404, and causing the filter sleeve 405 to automatically fall off after the pole-mounted circuit breaker is subjected to a violent impact, so that maintenance personnel can indirectly judge the severity of the impact on the pole-mounted circuit breaker.

[0069] When the pole-mounted circuit breaker is subjected to periodic slight vibration impact, the sliding flat block 420 is alternately compressed by the multiple balancing rubber rods 421, so that the sliding flat block 420 can buffer the horizontal vibration through translation. When the mounting base frame 422 and the bottom surface of the circuit breaker body 1 undergo significant relative movement, the transmission spring 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 falls off.

[0070] Then, the guide sleeve 419 is guided to extend and retract along the inside of the installation sleeve 416 through the alternating expansion and contraction of the balance spring 418, and the inner cavities of each installation sleeve 416 are connected through the liquid-guiding rectangular tube 417, so that the transmission oil inside the balance side box 412 can flow freely between the inner cavities of the installation sleeve 416 and the liquid-guiding rectangular tube 417. The gravity of the counterweight pressure block 415 and the elastic force of the compression spring 414 ensure that the transmission oil at the bottom of the balance side box 412 is always maintained within a suitable pressure range. The vertical vibration of the pole-mounted circuit breaker is buffered by the compression of the compression spring 414, the lifting and lowering of the counterweight pressure block 415, and the expansion and contraction of the balance spring 418, thereby improving the overall stability of the pole-mounted circuit breaker.

[0071] In the process of protecting the pole-mounted circuit breaker, the components are installed on the top of the pole-mounted circuit breaker by installing the small plate 501 and the supporting narrow rod 502. When the top of the pole-mounted circuit breaker needs to be protected in bad weather, the extension of the telescopic driving rod 518 on the top of the small installation block 517 drives the driving rack 519 to rise, and in the process of the driving rack 519 rising, 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, and in the process of the driving bottom wheel 514 rotating, the transmission belt 516 drives the driving pulley 513 The central mounting shaft 507 is rotated, and the transmission pulley 513 drives the central mounting shaft 507 to rotate. 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 the protective cover roll 508 out from both sides of the shielding top plate 510. The protective cover roll 508 and the guide end bar 509 utilize their own gravity to assist the protective cover roll 508 in sliding and covering along the side of the inclined support side bar 504. The protective cover roll 508 then protects the top of the pole-mounted circuit breaker, effectively improving the overall service life of the pole-mounted circuit breaker.

[0072] In addition, during the rotation of the central mounting shaft 507, the volute spring 506 is synchronously driven to reel and store energy. When the protective cover roll 508 needs to be reeled after use, the contraction of the telescopic drive rod 518 drives the drive rack 519 to move downward, and the elastic potential energy stored in the volute spring 506 drives the central mounting shaft 507 to reel in the opposite direction, thereby achieving the reeling of the protective cover roll 508, thereby effectively improving the convenience of the pole-mounted circuit breaker protection.

[0073] The protective cover roll 508 can intercept hail and large raindrops that hit the outside of the filter sleeve 405 and the filter core 406, preventing the filter sleeve 405 from falling off in bad weather, and preventing pollutants adsorbed inside the filter core 406 from leaking and polluting the surrounding environment, thereby improving the overall environmental friendliness of the pole-mounted circuit breaker.

[0074] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection 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 provided on the top of the circuit breaker body (1), and a current transformer (3) is provided 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 column-mounted circuit breaker; The pressure relief protection buffer mechanism (4) comprises a pressure relief top valve (401); The top side of the arc extinguishing chamber (2) is fixedly connected to a pressure relief top valve (401) via a pipeline, a clamping top pipe (402) is fixedly connected to the middle of one side of the pressure relief top valve (401), a mounting small pipe (403) is connected to the side of the circuit breaker body (1), an exhaust sliding pipe (404) is slidably clamped to the top of the inner side of the mounting small pipe (403), a filter sleeve (405) is movably clamped between the clamping top pipe (402) and the exhaust sliding pipe (404), and a filter core (406) is filled in the filter sleeve (405); The bottom surface of the circuit breaker body (1) is provided with a swinging bent rod (407), the front end of the swinging bent rod (407) is fixedly connected to a supporting arc block (408), the rear end of the swinging bent rod (407) is fixedly connected to a counterweight tail block (409), and 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 the arc block and the rotating shaft, and the swinging bent rod (407) rotates through 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).

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

3. 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 pipe, 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 pressing 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 inside 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 to a mounting sleeve (416) at a position 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 inner side of the mounting sleeve (416); The bottom ends of the plurality of guide sleeves (419) are fixedly connected to a sliding flat block (420), the outer sides of the sliding flat blocks (420) are embedded with balancing rubber rods (421), the ends of the plurality of balancing rubber rods (421) are fixedly connected to a mounting bottom frame (422), the bottom end of the mounting bottom frame (422) is fixedly connected to a mounting base plate (423), and one side of the mounting bottom frame (422) is fixedly connected to a transmission reed (424).

4. A pole mounted circuit breaker for facilitating pressure relief according to claim 3, 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).

5. The pole mounted circuit breaker for facilitating pressure relief according to claim 3, characterized in that: The bottom surface of the sliding flat block (420) is tightly slidably fitted with the inner bottom surface of the mounting base frame (422); a mounting hole is provided at the end of the mounting base plate (423); and the top side of the transmission spring (424) is tightly fitted with the side surface of the counterweight tail block (409).

6. A pole mounted circuit breaker for facilitating pressure relief according to claim 3, 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) includes a mounting plate (501); The middle portions of the top surfaces of the two sealing cover plates (413) are fixedly connected to a mounting plate (501), the top surfaces of the mounting plates (501) are fixedly connected to a supporting narrow rod (502) via bolts, the middle portions of the top ends of the supporting narrow rods (502) are fixedly connected to a driving top box (503), the bottom portions of both sides of the driving top box (503) are fixedly connected to 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 connected to a limiting sleeve (505), a vortex spring (506) is installed inside the limiting sleeve (505), the inner side of the vortex spring (506) is connected to a central installation shaft (507), a protective cover roll (508) is wound around the middle of the outer side of the central installation shaft (507), and 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 circular arc boxes (511), a rectangular protective box (512) is fixedly connected between the two mounting circular arc boxes (511), a transmission pulley (513) is sleeved at the end of the central mounting shaft (507) corresponding to the inner top position of the mounting circular arc box (511), a driving bottom wheel (514) is rotatably mounted on the inner bottom of the mounting circular arc box (511) via a rotating shaft, a transmission gear ring (515) is fixedly sleeved on the outer edge of the driving bottom wheel (514), and a transmission toothed belt (516) is tightly sleeved between the transmission pulley (513) and the driving bottom wheel (514); A mounting block (517) is fixedly connected to a side surface of the supporting narrow rod (502) at a position inside the rectangular protective 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).

7. A pole mounted circuit breaker for facilitating pressure relief according to claim 6, characterized in that: The inner side of the limiting sleeve (505) is fixedly connected to the outer end of the volute 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).

8. The pole mounted circuit breaker for facilitating pressure relief according to claim 6, 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).

9. The pole mounted circuit breaker for facilitating pressure relief according to claim 6, characterized in that: The driving rack (519) and the transmission gear rings (515) on both sides are engaged with each other, and the telescopic driving rod (518) is powered by an external power supply.

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