基于功能安全的安全阀优化设计方法研究  

Research on Optimal Design Method of Safety Valve Based on Functional Safety

作　　者：侯亚杰 陈殿京 李永清[2] HOU Ya-jie;CHEN Dian-jing;LI Yong-qing(Beijing Aerospace Propulsion Institute,Beijing 100076,China;China Special Equipment Inspection and Research Institute,Beijing 100029,China)

机构地区：[1]北京航天动力研究所,北京100076 [2]中国特种设备检测研究院,北京100029

出　　处：《阀门》2022年第2期118-122,共5页VALVE MAGAZINE

基　　金：国家重点研发计划项目“特种设备安全防护系统功能安全保障关键技术研究”(2018YFC0808902)。

摘　　要：基于功能安全标准GB/T20438,探究了安全阀产品安全完整性等级评估方法,得到减小危险不可测失效概率λ_(DU)和检测周期T_(1)可以提高安全阀的产品安全完整性,针对弹簧载荷式安全阀进行了系统的FMEDA分析,研究了影响危险不可测失效概率λ_(DU)的主要失效模式,提出了基于功能安全的安全阀优化设计方法,对提高安全阀的产品安全完整性等级具有重要的指导意义。Based on the standard GB/T 20438,the safety integrity level evaluation method of safety valve is explored.The results show that reducing the unmeasurable danger failure probability and detection cycle can improve he safety integrity level of safety valve.The failure modes effects and diagnostic analysis of safety valve is carried out systematically,and the unmeasurable danger failure probability is studied.In order to improve the safety integrity level of safety valve,the optimization design method of safety valve based on functional safety is proposed.

关 键 词：安全阀 安全完整性等级 危险不可测失效概率 

分 类 号：TH134[机械工程—机械制造及自动化]