Insulating pillar assembly of moisture-proof circuit breaker
A technology for insulating struts and circuit breakers, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve problems such as breakdown of insulating struts, power outages, and breakdown of insulating tie rods of circuit breakers, so as to ensure insulation capacity and prolong service life. Longevity and the effect of improving operational safety
Inactive Publication Date: 2021-12-31
泉州维盾电气有限公司
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Problems solved by technology
[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a moisture-proof circuit breaker insulating support assembly to solve the problem that the existing moisture is likely to cause breakdown of the insulating tie rod or insulating support of the circuit breaker, and even large-scale power outage accidents The problem
Method used
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[0022] When the circuit breaker is opening and closing, the main shaft 7 of the mechanism drives the insulating pull rod 4 and the arc extinguishing chamber 3 to make axial displacement through the pulling part. The insulating pull rod 4 is moving and exerts force on the bellows 602 through the spring fixing seat 601. The bellows 602 is deformed, and the elastic force of the bellows 602 and the pressure of the gas fluid during the opening and closing action will generate a specific pressure on the sealing end surface, which acts as a seal, thus blocking the moisture in the mechanism room of the circuit breaker, effectively Prevent it from intruding into the outer surface of the inner arm of the insulating support and the insulating pull rod 4;
[0023] When the circuit breaker is in normal operation, the pressure relief channel 604 is blocked by a rubber plug to ensure that the insulating support part of the circuit breaker meets the IP68 protection level. The rubber plugs of ...
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The invention discloses an insulating pillar assembly of a moisture-proof circuit breaker, which structurally comprises an insulating sleeve, wherein a sliding positioning sleeve is arranged in the upper part of the insulating sleeve, an arc extinguish chamber is slidably arranged in the sliding positioning sleeve, an insulating pull rod is movably arranged in the middle of the insulating sleeve, a connecting rod is arranged between the insulating pull rod and the arc extinguish chamber, the lower part of the insulating sleeve is provided with a metal corrugated pipe sealing structure for sealing the insulating sleeve, the metal corrugated pipe sealing structure comprises a spring fixing seat, a corrugated pipe and a flange seat, one end of the corrugated pipe is fixedly connected with the spring fixing seat, the other end of the corrugated pipe is fixedly connected with the flange seat, and a channel among an insulating pull rod, an insulating pillar and a mechanism action main shaft is subjected to a plugging design, so that the insulating pillar and a mechanism chamber are relatively and effectively isolated and insulated from moisture in space, moisture in the mechanism chamber is ensured not to enter the insulating pillar, the operation safety of the pillar type vacuum circuit breaker is improved, the insulation capability of the insulating pull rod and the insulating pillar is ensured, the service life of the breaker is prolonged, and the equipment stability is improved.
Description
technical field [0001] The invention relates to an insulating support assembly of a moisture-proof circuit breaker, which belongs to the field of circuit breakers. Background technique [0002] At present, the protection level of the ZW32 structure of the pillar vacuum circuit breaker widely used cannot effectively prevent rainwater from penetrating into the interior of the circuit breaker mechanism chamber through the bottom plate of the product mechanism box during transportation or storage, and the condensation moisture generated by the temperature difference between day and night cannot be effectively discharged. Outside the circuit breaker, the moisture can only climb up through the inner wall of the insulating support connected to the mechanism room and the outer surface of the insulating tie rod, resulting in the reduction of the insulation capacity of the tie rod and the insulating support support, resulting in partial discharge of the insulating tie rod and the inner...
Claims
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Login to View More IPC IPC(8): H01H9/04H01H33/66H01H33/662
CPCH01H33/66H01H33/662H01H9/04
Inventor 吴朝晖贾冬霞林荣盛陈智全庄栋林吴祖炎陈兴金卓培坤
Owner 泉州维盾电气有限公司