安全阀阀腔流动特性分析及数值模拟  

Flow Characteristics Analysis and Numerical Simulation in Safety Valve Cavity

作　　者：李媛[1] 张惠兵 戴野[2] 张瀚博 刘瑞[2] 史耀军[2] LI Yuan;ZHANG Hui-bing;DAI Ye;ZHANG Han-bo;LIU Rui;SHI Yao-jun(School of Mechanical Engineering and Automation, University of Science and Technology LiaoNing, Anshan 114051,China;School of Mechanical and Power Engineering,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051 [2]哈尔滨理工大学机械动力工程学院,哈尔滨150080

出　　处：《哈尔滨理工大学学报》2020年第1期15-21,共7页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(51505109)。

摘　　要：为研究安全阀阀腔流动特性对安全阀启闭性能的影响,加强对安全阀结构的优化与设计。通过计算流体力学对其分析了不同开度下阀腔介质流动特性与压力分布,以及启闭时安全阀阀腔流场变化规律及影响因素。结果表明:弹簧的刚度与理论刚度相吻合;导向套开槽尺寸对流量影响不大、套筒斜面角度对流量的影响基本成线性变化、随着入口口径的增加质量流量和轴向力均减小。The flow characteristics of the valve cavity directly affect the opening and closing performance of the safety valve.Based on the theory of fluid dynamics,we establish the finite element model of valve flow field,and the change rule and influencing factors of valve cavity flow field during opening and closing are analyzed.We take a kind of nuclear-level spring type safety valve as the research object,and the medium flow characteristics and pressure distribution in the valve chamber under different opening degrees were calculated,the valve lift curve is derived.The influence of the groove size of the guide sleeve,the angle of the inclined surface of the guide sleeve,and the diameter of the inlet valve seat on the flow characteristics of the valve chamber medium is obtained.The research results can guide the setting of safety valve cavity structure parameters,and provide theoretical basis for the flow characteristics and structural optimization of spring type safety valve.

关 键 词：核级安全阀 结构设计 流场分析 数值模拟 

分 类 号：TH122[机械工程—机械设计及理论]