Outdoor non-reignition vacuum circuit breaker with high condensation resistance

Abstract

The invention discloses an outdoor non-reignition vacuum circuit breaker with the high condensation resistance. The vacuum circuit breaker comprises three vacuum arc-extinguishing chambers, insulatingouter covers, a composite material, support mechanisms, a mechanism tank body, a linkage shaft, a separating brake spring, a mechanism output crank arm, a spring operation mechanism and a kinetic energy absorbing and limiting device, wherein the three vacuum arc-extinguishing chambers are correspondingly and respectively connected with three phases of an alternating current and are sleeved with the insulating outer covers; the spaces between the outer walls of the vacuum arc-extinguishing chambers and the insulating outer covers are filled with the composite material in a seamless sealing manner; the support mechanisms are connected to the lower ends of the vacuum arc-extinguishing chambers; the mechanism tank body is used for providing a base for the insulating outer covers; the linkageshaft is connected with each support mechanism; one end of the separating brake spring is hinged with the linkage shaft, and the other end of the separating brake spring is hinged with the inside of the mechanism tank body; the mechanism output crank arm is connected with the linkage shaft; the spring operation mechanism is arranged in the mechanism tank body; and the kinetic energy absorbing andlimiting device is connected between the linkage shaft and the mechanism tank body. By utilizing a three-phase support column structure, the effective insulation of each phase of the alternating current is guaranteed, and vacuum arc-extinguishing chamber units are seamlessly sealed by virtue of the composite material, so that the extremely good sealing performance of the arc-extinguishing chamberunits is guaranteed, and the moisture resistance and condensation resistance of the circuit breaker are improved.

Description

technical field [0001] The invention relates to the field of vacuum circuit breakers, in particular to an outdoor non-reignition vacuum circuit breaker with high anti-condensation. Background technique [0002] With the continuous advancement of the construction of beautiful cities, it is inevitable for cables to go underground, and the nature of power loads will change accordingly. The original above-ground power transmission and control standards will also change accordingly in order to meet the complex requirements for the safe operation of underground power pipe networks. The construction of urban underground power pipeline network is becoming more and more complicated. Once an accident occurs, the maintenance cost will be extremely high, which will seriously affect the city appearance, bring inconvenience to the citizens, and reduce the people's sense of gain. The biggest hidden danger affecting the safety of the underground power pipe network is the operation restrike ...

AI Technical Summary

Problems solved by technology

In the prior art, the traditional oil buffer device relies on the leakage of oil under pressure to consume the kinetic energy of opening, but the effect is still not good enough. Large excess kinetic energy will cause the system to generate a large anti-seismic backhaul, and there is also a hidden danger of opening failure

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