核电站先导式安全阀反向密封性能的研究  

Research on the Reverse Tightness Ability of Pilot Operated Safety Valves in Nuclear Power Plant

作　　者：龚钊 曲昌明 李栋梁 张卫 GONG Zhao;QU Chang-ming;LI Dong-liang;ZHANG Wei(China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《阀门》2022年第2期113-117,共5页VALVE MAGAZINE

摘　　要：核电站设置了先导式安全阀进行系统的超压保护。华龙一号三代核电站设计中,余热排出系统的设计发生变化,余热排出系统的部分设备布置在安全壳外,对先导式安全阀管线提出了反向密封功能的要求。对于现有的Sebim先导式安全阀,通过分析和试验证明了其不能实现系统反向密封功能。为解决此问题,分别对余热排出系统的系统设计、安全阀设备选型以及先导式安全阀设备的部件修改等方面进行研究,提出解决方法。In nuclear power plant,pilot operated safety valves(POSV)are used for the overpressure protection.In third generation nuclear power plant HPR1000,due to the design improvement of RHR system,some equipment are located outside the containment,accordingly the reverse tightness ability is required for the POSV line.For the current Sebim POSV,it is verified that the reverse tightness ability can’t be satisfied by analysis and test.In order to solve the question,this paper conducts research on the modification of the RHR system design,the safety valve type,as well as the components of current POSV,and proposes the resolve method.

关 键 词：余热排出系统 先导式安全阀 反向密封 

分 类 号：TH134[机械工程—机械制造及自动化]