氢液化系统中氦制冷循环的可靠性及FMECA分析  

Reliability and FMECA analysis of helium refrigeration cycle in hydrogen liquefaction system

作　　者：钱浩然 周芷伟 陆小飞[2] 张启勇[2] Qian Haoran;Zhou Zhiwei;Lu Xiaofei;Zhang Qiyong(Anhui University of Science and Technology,Huainan 232001,China;Hefei Institute of Physical Sciences,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]安徽理工大学,淮南232001 [2]中国科学院合肥物质科学研究院,合肥230031

出　　处：《低温与超导》2024年第12期80-88,共9页Cryogenics and Superconductivity

基　　金：国家重大科技基础设施项目(2018-000052-73-01-001228);国家重大科技专项(31130.02.EAST)资助。

摘　　要：针对氦制冷循环系统在液氢生产期间内的安全稳定运行的要求,本研究采用可靠性框图分析(RBD)和故障模式、影响和关键性分析(FMECA)结合的方法,基于实际生产数据与相似液氢系统用户的设备失效数据,通过可靠性分析软件PosVim,对氦制冷循环系统进行全面、深入的稳定性分析。结果表明:该氦制冷循环系统的设计寿命为350000 h,系统运行2160 h的可靠度为99.81%,运行50000 h的可靠度为93.83%,运行87600 h的可靠度为84.53%,在预计的生产周期内可以稳定运行。FMECA分析了17个故障模型,并结合RBD分析提出了缓解风险的措施,提高该氦制冷循环系统的可靠性与安全性。To satisfy the requirement of safe and stable operation of the helium refrigeration cycle system during liquid hy⁃drogen production,Reliability Block Diagram(RBD)and Failure Mode,Effects,and Criticality Analysis(FMECA)were com⁃bined and studied.Based on the actual production data and the equipment failure data from users of similar liquid hydrogen sys⁃tem,a comprehensive and in-depth stability analysis of the helium refrigeration cycle system was carried out by the reliability a⁃nalysis software PosVim.The results show that the helium refrigeration cycle system has a design life of 350000 h,and the relia⁃bility of the system is 99.81%for 2160 h of operation,93.83%for 50000 h of operation,and 84.53%for 87600 h of opera⁃tion,and it can be operated stably in the expected production cycle.17 failure models were analysed and risk mitigation measures were proposed by FMECA in conjunction with RBD analysis to improve the reliability and safety of this helium refrigeration cycle system.

关 键 词：氢液化系统 氦制冷循环 可靠性分析 FMECA 

分 类 号：TB657.8[一般工业技术—制冷工程]