中国标准化Issue(9)：176-182,7.DOI:10.3969/j.issn.1002-5944.2024.09.028
低温阀门关键性能国内外标准技术差异分析
Analysis of Technical Differences between Domestic and Foreign Standards for Key Performance of Cryogenic Valves
摘要
Abstract
In order to study key performance and structure of cryogenic valves,the paper compares the differences in application scope,main technical indexes,test methods and influence of domestic and foreign standards such as GB/T 24925-2019,BS 6634-1984(R1998),ISO 28921-1:2022,and MSS SP-134-2012.The application conditions,typical product classification,typical valve shell materials,typical structure characteristics and common standards classification at home and abroad for cryogenic valves are summarized.The temperature range of cryogenic valves,the structural design features of extended neck and the temperature critical point for cryogenic performance test are pointed out.The low temperature test process stipulated in GB/T 24925-2019 does not distinguish between hard seals and soft seals in terms of the leakage rate of valve seats,and the measurement of leakage rate of valve seats,which is expounded as shortcomings.The paper explains the accurate measurement method and conversion method of valve seat leakage rate through theoretical analysis and verification,which provides technical guidance for the improvement of cryogenic valve performance as well as the development and revision of national standards.关键词
低温阀门/关键性能/低温性能试验/阀座泄漏率Key words
cryogenic valve/key performance/cryogenic performance test/valve seat leakage rate引用本文复制引用
吴超俊,缪克在,胡志涛,方威,张帆..低温阀门关键性能国内外标准技术差异分析[J].中国标准化,2024,(9):176-182,7.基金项目
本文受温州市市场监督管理局科技计划项目"阀门泄漏检测气增压及氦气自动回收集成智控装置项目"(项目编号:2023020)资助. （项目编号:2023020）
