液压与气动2025，Vol.49Issue(11)：19-28,10.DOI:10.11832/j.issn.1000-4858.2025.11.003
水轮机调速器主配压阀运行特性分析
Analysis on Operating Characteristics of Main Distributing Valve of a Turbine Governor
摘要
Abstract
As the core actuator in the turbine governing system,the main distributing valve is prone to a series of problems such as local high pressure,uneven force on the valving element,and vibration under different operating conditions.During the research process,CFD is employed to analyze the internal flow field characteristics of the main distributing valve of a turbine governor under start-up and shutdown conditions.Numerical simulation is carried out on the valve models with different valving element openings to obtain the opening-flow characteristic curve,and the adjustment strategies of the valving element position under different operating conditions are analyzed.The research founds that the annular structure of the valve body causes a large number of backflow and vortex areas in the main distributing valve.Ths results in significant uneven force distribution on the valve core,compromising the main distributing valve's safe and stable operation.Furthermore,the flow characteristic curve of main distributing valve exhibits a single-hump pattern,with the 25％～40％opening range constituting the primary hump zone.关键词
主配压阀/CFD/涡流/流量特性曲线/单驼峰Key words
main distributing valve/CFD/vortex/flow characteristic curve/single-hump分类
机械制造引用本文复制引用
卢盈宇,刘忠,安学利..水轮机调速器主配压阀运行特性分析[J].液压与气动,2025,49(11):19-28,10.基金项目
国家自然科学基金面上项目(52079011) （52079011）
