转板式气动数字流量阀间隙泄漏研究  

Research on the gas leakage of the pneumatic digital flow valve with rotating plate

作　　者：唐翠[1] 鲍官军[1] 杨庆华[1] 陈青英 

机构地区：[1]浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,浙江杭州310032 [2]千岛湖职业高级中学,浙江淳安311700

出　　处：《浙江工业大学学报》2011年第6期648-652,共5页Journal of Zhejiang University of Technology

基　　金：863基金资助项目(2009AA04Z209);浙江省自然科学基金杰出青年团队项目(R1090674);浙江省机械电子工程重中之重学科开放基金资助项目(20090325)

摘　　要：针对转板式气动数字流量阀的间隙泄漏这一问题,利用Navier-Stokes方程建立了径向间隙和轴向间隙泄漏的数学模型.对转板式气动数字流量阀的结构参数等影响因素进行了仿真,分析了间隙泄漏对数字阀静态输出特性的影响.结果表明,增加转板的厚度,减小小孔的半径可以减小泄漏量,但是减小小孔的半径,却降低了输出量.根据仿真结果,提出了改进措施,为阀体的优化设计提供理论参考价值.To the gas leakage of the pneumatic digital valve with rotating plate, mathematical models of radical and axial gas leakage based on Navier-Stokes equations are established. The influencing factors of structural parameters are simulated and the effects of the gas leakage on the static output of the digital flow valve are analyzed. The results indicate that, by means of increasing the thickness of the plate or reducing the radius of holes, the amount of leakage can be reduced significantly, but at the price of the decreasing output flow rate due to decreasing radius. According to the simulation results, improvement measures are proposed, which will provide a theoretical reference for optimal design of the valves.

关 键 词：数字阀 间隙泄漏 Navier—Stokes方程 

分 类 号：TH137.522[机械工程—机械制造及自动化]