摘要
SP08-20是一种用于方向控制的先导式螺纹插装比例方向阀,断电时,用作单向阀,通电时,用作节流阀,通过控制先导阀芯及主阀芯位置变化实现对阀的流量控制。此阀流道形状较为复杂,控制腔压力分布规律难以确定,且传统的液动力与流量经验公式本身准确性较差,导致在通过由经验公式构成的数学模型求解阀的静态特性时,模型计算结果与试验结果有较大的差异。故采用Fluent软件对SP08-20进行流场仿真得到其阀芯受力规律,利用曲线拟合的方式得到阀芯受力拟合式,据此求解静态数学模型,得到此阀的静态特性。试验结果表明,利用流场仿真的方式求解所得静态特性曲线与试验曲线具有较高的吻合度。
The SP08-20 is a pilot-operated,threaded cartridge proportional directional valve for directional control.The valve is used as a check valve when power is off and as a throttle valve when power is on.The flow control of the valve is achieved by controlling the change in position of the pilot spool and the main spool.This valve flow channel shape is more complex,the control cavity pressure distribution law is difficult to determine,and the traditional empirical formula of hydrodynamic force and flow itself is less accurate,resulting in the mathematical model composed of empirical formula to solve the static characteristics of the valve,the model calculation results and experimental results have a large difference.Therefore,Fluent software is used to simulate the flow field of SP08-20 to obtain the force law of its spool,using the curve fitting method to obtain the spool force fitting formula,according to which the static mathematical model is solved to solve the static characteristics of this valve.The test results show that the static characteristic curve obtained by using the flow field simulation has a high degree of agreement with the test curve.
作者
莫雨桐
张策
陈泽浩
金波
MO Yu-tong;ZHANG Ce;CHEN Ze-hao;JIN Bo(School of Engineering,Zhejiang University,Ningbo,Zhejiang 315100;Ningbo HOYEA Machine Manufacturing Co.,Ltd.,Ningbo,Zhejiang 315153;School of Mechanical Engineering,Zhejiang University,Hangzhou,Zhejiang 310027)
出处
《液压与气动》
北大核心
2024年第3期165-173,共9页
Chinese Hydraulics & Pneumatics
基金
宁波市科学技术局资助项目(2019B10052)。
关键词
螺纹插装比例方向阀
流场仿真
曲线拟合
静态特性仿真
试验
screw-in proportional directional valve
flow field simulation
curve fitting
static characteristic simulation
experiment
