强激光与粒子束2025，Vol.37Issue(4)：135-141,7.DOI:10.11884/HPLPB202537.240416
不同温度下空气介质气体开关的自击穿特性
Analysis of self-breakdown characteristics of air-insulated gas switch at different environmental temperature
摘要
Abstract
The study on the self-breakdown characteristics of air-insulated gas switches at different environmental temperatures can improve the adaptability of pulsed power devices,especially in the fields of shale oil and gas resource exploitation.By establishing a research platform for the high-temperature performance study of coaxial gas switches,the self-breakdown voltage distribution of gas switches at different temperatures was experimentally studied.The main factors and laws of temperature on the self-breakdown discharge process were analyzed in combination with Townsend discharge theory.The results show that,the main factors affecting the self-breakdown voltage are the density of the air and the distance of the switch at different temperatures.For cavity-exchangeable gas switches,the self-breakdown voltage decreases with the increase of temperature.However,with the increase of environmental temperature,the high-temperature particles sprayed during the ablation process of the electrode cause molecular pyrolysis and gas adsorption on the surface of the insulating material,as well as the chemical reaction of gas molecules in the process of high-current discharge,resulting in obvious changes in the composition of the gas and the reduction of the stability of the switch discharge.The research results in this paper can provide a technical reference for the reliable operation of gas switches in high-temperature environments.关键词
气体开关/自击穿特性/高温环境/耐高温绝缘材料Key words
gas switch/self-breakdown characteristics/high temperature environment/high temperature insulating material分类
信息技术与安全科学引用本文复制引用
姚伟博,魏浩,杨森,王志国,姜晓峰,楼成..不同温度下空气介质气体开关的自击穿特性[J].强激光与粒子束,2025,37(4):135-141,7.基金项目
国家重点研发计划项目(2020YFA0710500) （2020YFA0710500）
