A solid-sealed pole and a circuit breaker using the solid-sealed pole

Abstract

The invention provides a solid-sealed pole post and a circuit breaker employing the same, which are used for solving the problem of complicated movable-end outgoing line seat structure due to heat dissipation hole opening in an existing solid-sealed pole post. The solid-sealed pole post comprises a solid-sealed pole post body, wherein the solid-sealed pole post body is provided with an arc extinguishing chamber, a moveable-end outgoing line seat and a heat dissipation outlet, the movable-end outgoing line seat comprises an outgoing line part and a connection part, the connection part is electrically connected with a mobile end of the arc extinguishing structure in a moving way, a heat sink is fixedly pasted at an outer side of the connection part and is provided with a plurality of heat dissipation fins, the plurality of heat dissipation fins are arranged at intervals, and a heat dissipation passage communicating the heat dissipation outlet is formed between adjacent heat dissipation fins. The heat sink is fixedly pasted at the outer side of the connection part of the movable-end outgoing line seat, heat of the connection part of the movable-end outgoing line seat can be transferred to the heat sink, the heat dissipation passage is formed between two adjacent heat dissipation fins in the heat sink and communicates with the heat dissipation outlet, the heat generated by the connection part can be rapidly released to the exterior of the solid-sealed pole post, and the problem of complicated movable-end outgoing line seat structure is solved.

Description

technical field [0001] The present invention relates to a solid-sealed pole and a circuit breaker using the solid-sealed pole. Background technique [0002] At present, vacuum circuit breakers have been recognized by the market for their stable performance and have been widely used. The solid-sealed pole is a component that embeds the conductive parts related to the vacuum interrupter and the circuit breaker into the solid insulating material at the same time to form a pole, so that the solid-sealed pole becomes an integral part. As the single pole of the vacuum circuit breaker, the demand for the solid-sealed pole is very large. The solid-sealed pole is made of epoxy resin or other thermoplastic materials by pouring the upper outlet seat, the vacuum interrupter, the lower outlet seat and other accessories. Epoxies have excellent electrical and mechanical properties, but their thermal conductivity is very poor. When the rated current is below 2000A, the heat generation of...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a solid-sealed pole to solve the problem that the structure of the moving end outlet seat is complicated due to the opening of heat dissipation holes in the existing solid-sealed pole; circuit breaker

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