压力容器2017，Vol.34Issue(6)：5-13,9.DOI:10.3969/j.issn.1001-4837.2017.06.002
高温工况下安全阀的整定压力偏差计算方法
Assessment Method of Set Pressure Deviation for Safety Valves under High Temperature Conditions
摘要
Abstract
Practical experience suggests that the set pressure determined in bench testing maybe different from its actual opening pressure when the safety valve′s operating temperature is high.Therefore,this paper presents a method for evaluating the set pressure deviation of high temperature valves.First,CFD method is used to obtain the temperature field of the whole valve.Then,the actual compression and stiffness of the spring are calculated according to that temperature distribution.Finally,the set pressure deviation is calculated with these data.A case study is carried out with an A48Y-40 safety valve,results show that the assessment method proposed in this paper has high accuracy and provides reference meaning to safety valve inspection and application.关键词
安全阀/温度分布/膨胀量/弹簧刚度/整定压力Key words
safety valve/temperature distribution/thermal expansion/spring stiffness/set pressure分类
机械制造引用本文复制引用
夏舒阳,姚建,罗利佳,包士毅,高增梁..高温工况下安全阀的整定压力偏差计算方法[J].压力容器,2017,34(6):5-13,9.基金项目
浙江省公益技术应用研究计划项目(2016C33050) （2016C33050）
