万能式断路器关键部件设计与优化

Design and Optimization of the Key Components of Air Circuit Breaker

对传统万能式断路器的触头系统、操作机构、抽屉座导电触桥进行优化设计,通过计算机仿真,计算了触头系统的电动力分布、操作机构部件强度对断路器短耐性能指标的影响,提出了优化技术方案,并对传统抽屉座进行了优化设计,提出了新的双排导电触桥的技术方案,从而解决了小体积、大电流、高短耐下的温升问题和动热稳定性问题以及触头烧损问题等。

This paper optimized the design of the contact system,operating mechanism,and drawer base conductive contact bridge of the traditional air circuit breaker. Through computer simulation,the influence of the electrical power distribution of the contact system and the strength of the operating mechanism components on the short-circuit resistance performance of the air circuit breaker was calculated,and an optimization technical scheme was proposed. And optimized the design of the traditional drawer,put forward a new technical proposal of double-row conductive contact bridge. This solves the problem of temperature rise and dynamic thermal stability at small volume,high current,and high short-term resistance. And burning of contacts.