核电稳压器安全阀动作性能仿真及数学模型建立  

Transient simulation on pressurizer safety valve and mathematic model

作　　者：王媛媛[1] 王亮[2] 田野 张健[2] 于新海[1] 商华政 WANG Yuanyuan;WANG Liang;TIAN Ye;ZHANG Jian;YU Xinhai;SHANG Huazheng(Mechanical and Power Engineering School,East China University of Science and Technology,Shanghai 200237,China;Key Laboratory of Nuclear Reactor System Design Technology,Nuclear Power Institute of China,Chengdu 610094,China)

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]中国核动力研究设计院,核反应堆系统设计技术重点实验室,成都610094

出　　处：《流体机械》2022年第2期89-96,共8页Fluid Machinery

基　　金：国家自然科学基金项目(21176069)。

摘　　要：为了实现稳压器安全阀的动态模拟,精确计算稳压器安全阀阀瓣的运动状态,采用动网格、流域分块、外接虚拟大容器等模拟技术,并利用二阶微分方程对阀瓣的动态特性进行了编译,使得稳压器安全阀在32 ms实现全开启,在此基础上,基于响应面法对影响稳压器安全阀启闭压差的因素进行了分析,拟合了回座压力的计算公式,最后检验模拟值与实验值误差是否小于5%,验证方法的可行性,本文为稳压器安全阀的设计和现场调试提供了精确的数学模型。The methods of moving mesh,domain decomposition and external virtual large container were used for the dynamic simulation on pressurizer safety valve performance and precise calculation of movement state of the pressurizer safety valve disc,and the dynamic characteristics of the valve disc was described using the second-order differential equation,making the pressurizer safety valve fully open within 32 ms.Based on this,factors affecting the difference between opening pressure and closing pressure of pressurizer safety valve was analyzed based on response surface methodology were analyzed,the calculation formula for blowdown pressure was fit.Finally,it was tested whether the error between the simulated value and the experimental value is less than 5%,and the feasibility of the method was verified.The research provides precise mathematic model for design and on-site debugging of the pressurizer safety valve.

关 键 词：弹簧式稳压阀 流动性能 弹簧刚度 调节圈位置 响应面法 

分 类 号：TH138[机械工程—机械制造及自动化]