基于调节阀阀芯在不同流量特性下均拥有抛物线外形轮廓的特性,提出了一种基于 Chebyshev多项式拟合的调节阀阀芯设计方法:根据调节阀流量系数与流通面积的关系,运用Chebyshev曲线对调节阀阀芯等值面上的点进行拟合,得到阀芯的曲线方程.对阀芯曲线用Fluent等软件进行数值模拟和实验验证,结果表明,阀芯设计的流量特性偏差为1.9% ~14.1%,符合标准 IEC 60534-2-4:1989在10.0% ~18.4%范围的规定,设计方法是切实可行的.%For the characteristics of the control valve spool in different flow characteristics with parabola con-tour,a design method of regulating valve spool based on Chebyshev polynomial fitting was proposed.According to the relationship between the flow coefficient and the flow area,the curve equation of spool was aquired by fitting the point on the spool contour which used the Chebyshev curve fitting method and then the Fluent was used for software simulation and experimental verification of the designed spool curve.The results showed that the deviation of the flow characteristic of the spool design was 1.9% ~14.1%,which conformed to the stand-ard IEC 60534-2-4:1989 in the range of 10.0% ~18.4%. The design method was practical and feasible.
展开▼
