氙气与多种示漏气体漏率转换关系研究  

Research of the Leak Rate Conversion for Xenon and Tracer Gas

作　　者：韩琰[1] 孙立臣[1] 王静涛[1] 刘一欢 陈文卿 眭霄翔 HAN Yan;SUN Li-chen;WANG Jing-tao;LIU Yi-huan;CHEN Wen-qing;SUI Xiao-xiang(Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China;CGN Inspection Technology Co.,Ltd.,Suzhou 215004,China)

机构地区：[1]北京卫星环境工程研究所,北京100094 [2]中广核检测技术有限公司,江苏苏州215004

出　　处：《真空》2023年第3期67-71,共5页Vacuum

基　　金：军用测试仪器领域工程产品替代研制(2006ZCTF0039-1)。

摘　　要：电推进技术是我国航天卫星未来重要的推进系统技术,具有比常规化学推进比冲高、推力小、推进剂利用率高等优点,其中离子推进器主要使用氙气作为推进剂。常规的推进系统密封性测试采用氦气作为示漏气体,检漏结果与实际工质氙气的真实漏率存在换算关系,为了能够准确评估电推进系统的实际泄漏状态和漏率数值,亟需开展相关研究。本文通过搭建多种示漏气体测试系统,验证了氙气原位检漏技术的可行性,并由理论分析和实验研究初步获得氙气与氦气、氪气之间的漏率转换关系,以及转换系数理论上下限数值,为后续电推进的检漏工作提供参考依据。The electric propulsion technology is an important propulsion system technology for Chinese satellites in the future.It has the advantages of higher specific impulse,lower thrust and higher propellant utilization compared to the conventional chemical propulsion.The ion thrusters mainly use xenon as propellant.Helium is used as the leakage gas in the conventional sealing test of the propulsion system.There is a conversion relationship between the leakage detection result and the actual leakage rate of the xenon.In order to accurately evaluate the actual leakage state and leakage rate of the electric propulsion system,it is urgent to carry out relevant research.In this paper,the feasibility of xenon in-situ leak detection technology is verified by building a several tracer gases testing system.Through theoretical analysis and experimental research,the leak rate conversion relationship between xenon,helium and krypton,as well as the theoretical upper and lower limits of the conversion coefficient,are preliminarily obtained.It will provide a reference for the leak detection of the electric propulsion system.

关 键 词：电推进系统 检漏 氙气 转换关系 漏率 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]