密封容器混合气体充入方式的试验研究
袁会勇¹，柏佳磊¹，操丰²，黄海涛¹，刘祥祥¹
（1.国核电站运行服务技术有限公司，上海 200233；2. 国核示范电站有限责任公司，山东 荣成 264333）
摘要：以一密封容器为研究对象，采用氦检漏技术对3 种不同充气方式进行试验研究，以确定气体混合均匀用时最
短的充气方式，以期为该类实际工作提供指导。试验结果表明：采用3 种充入方式，最终均可以实现整个空间内气体的
混合均匀，但是所需时间不尽相同。当采用先充入N₂、再充入He 的方式时，静置27 h后，N₂和He 基本混合均匀； 当采用先充入He、再充N₂
的方式时，静置1.5 h 后，内部He的体积分数基本均匀；当采用先用缓冲容器进行一定混合后再充入容器的方式时，内部He的体积分数30 min内基本均匀。
关键词：密封容器；氦检漏技术；充气方式
中图分类号：TQ027.3      文献标识码：A      文章编号：2095-0802-(2021)01-0154-03
Experimental Study of Method of Mixed Gas Filling in Sealed Container
YUAN Huiyong¹, BAI Jialei¹, CAO Feng², HUANG Haitao¹, LIU Xiangxiang¹
(1. State Nuclear Power Plant Service Company, Shanghai 200233, China; 2. State Nuclear Power Demonstration Plant Co.,
Ltd., Rongcheng 264333, Shandong, China)
Abstract: Taking a sealed container as the research object, this paper adopted helium leakage detection method to conduct experimental
research on 3 different charging modes, so as to determine the charging mode of the shortest time of uniform gas mixing.
It provides guidance for this kind of practical work. Experimental results show that the 3 filling methods can achieve uniform gas
mixing in the whole space, but the required time is different. When N₂ is first filled and then He is filled, it is basically uniformafter 27 h of standing. When filling with He first and then N₂
, after standing for 1.5 h, the He volume fraction inside is basically
uniform. When mixed with a buffer container and then filled with the container, the He concentration inside reaches a uniform level within 30 minutes.
Key words: sealed container; helium leakage detection method; method of gas filling