一种新型控制模式的常开电磁阀的设计改进及技术分析

摘要

该厂为某型机研制的一种新型常开电磁阀在试验过程中出现不能正常打开、关闭现象.该文从理论分析、建模计算及工程经验三个方面,分析了故障现象产生的原因,提出了一种新的随动控制模式并进行了设计改进.改进后的电磁阀按流量大小自动选择介质通道,打破了传统常开电磁阀的控制模式.新设计已通过试验,验证了其可行性.%The normally open solenoid valve developed for some certain type by AVIC No.116 Factory experienced failures of abnormal opening and closing in tests.This paper analyzed the causes of the failures by three approaches including theoretical analysis,model calculation and engineering experience,and provides a new follow-up control mode along with the design improvement.The improved solenoid valve selects media channel according to the mass flow,breaking the traditional control mode of normally open solenoid valve.The new design has been tested to validate its feasibility.