金属橡胶精密流量阀流量特性研究  

Research on the Flow Characteristics of Metal Rubber Precision Flow Valve

作　　者：张蕊华[1,2] 李横江[2] 刘龙辉[2] 朱银法[1] 熊智文[2] 叶艳辉[2] 

机构地区：[1]丽水学院工学院,浙江丽水323000 [2]南昌大学机电工程学院,江西南昌330031

出　　处：《润滑与密封》2012年第9期75-78,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(50965014;50775109);江西省自然科学基金项目(2010G2C0121);江苏省博士后科研资助计划项目(1002010C);国家外专局引智项目(20103600054)

摘　　要：利用压电陶瓷的精密位移输出特性和金属橡胶的减压、隔振降噪、过滤等特点,设计一种新型金属橡胶精密流量阀,并对其流量特性进行理论分析。基于达西定律和牛顿第一定律建立阀流量特性的数学模型,运用Matlab软件分析压电陶瓷驱动电压、金属橡胶环孔隙度、金属橡胶环厚度、金属丝直径以及阀进出口压差对阀流量特性的影响规律。结果表明,阀的流量随着驱动电压、金属橡胶环孔隙度、金属丝直径和压差的增大而增大,随着金属橡胶环厚度的增大而减小,表明在不改变阀的其他参数条件下,仅通过改变金属橡胶环的几何参数就可以在一定范围内根据需要调整阀的流量值。A new type of metal rubber precision flow valve was designed based on the precision displacement output characteristics of piezoelectric ceramics and the decompression, noise isolation ,filtering and other features of metal rubber, which can ensure the flow valve precision fluid volume control. Based on Darcy＇s law and Newton＇s first law, the theoretical model of metal rubber precision flow valve was established, and the force balance equation and the precise flux valve dis- charge voltage equation were derived. The effect of the driving voltage of piezoelectric ceramic, the porosity and thickness of metal rubber ring, the metal wire diameter and the outlet and inlet difference pressure of flow valve on the flow characteris- tics of flow valve was analyzed by MATLAB software. The results show that the valve flow increases with the increase of driving voltage,metal rubber＇s porosity, wire diameter and pressure, and decreases with the increase of the thickness of metal rubber. It shows that the valve flow can be adjusted at a certain extent only by changing the geometrical parameters of metal rubber.

关 键 词：压电陶瓷 金属橡胶 精密流量阀 流量特性 

分 类 号：TH136[机械工程—机械制造及自动化]