Tank-type circuit breaker

Abstract

The invention relates to a tank-type circuit breaker, which comprises a circuit breaker bracket, three pairs of insulators, transformers, conductive support seats and an operation box, wherein three tank bodies distributed side by side are horizontally arranged at the upper end of the circuit breaker bracket; the three pairs of insulators are arranged at the upper ends of the three tank bodies separately; each insulator comprises an obliquely arranged conducting tube; an air chamber also sleeves the outer side of the lower end of each conducting tube; the upper end of each conducting tube is connected with the top end of a lead-out bushing through a regulating mechanism A; one transformer is arranged at the outer side of each air chamber; one conductive support seat is arranged in each tank body; one connection seat, one moving side conductive support seat and one static side conductive support seat are integrally manufactured; each connection seat is also provided with a regulating mechanism B; and the operation box is arranged at the side end of the circuit breaker bracket and connected with the three tank bodies. The tank-type circuit breaker has the advantages that installationof the conducting tubes is facilitated, manufacturing is facilitated and the breakdown phenomenon can be effectively reduced.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a pot circuit breaker. Background technique [0002] Now tank circuit breakers are widely used in high-voltage power grids, and it has become one of the indispensable components of power systems. Tank circuit breakers are composed of arc extinguishing chambers and current transformers. In the traditional current transformer structure , an insulating plate is set between the upper end of the liner and the flange cover of the shell, and the support flange at the bottom of the liner is a split structure. The fixing of the liner and the fastening method of the liner are inconvenient to assemble, and if the pressure plate is not rotated and pressed in place, it is easy to cause poor contact of the liner, and discharge may occur during the operation of the product; in the traditional current transformer When the coil is pressed, the pressing device is arranged at the bottom of the coil, and it is ...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned current transformer still has certain defects: it adopts a built-in current transformer, that is, the current transformer is installed in the gas chamber, and the transformer and the central conductive column are only separated by a bushing, and the conductive column is With strong current, the transformer is weak current, which is easy to cause breakdown; in addition, since the current transformer is installed in the gas chamber, it is necessary to pass the line through the grounding process of the current transformer. The air chamber, and the air chamber itself needs good sealing, so the part of the line passing through the air chamber needs to be sealed separately, which is very troublesome

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