摘要
比例阀与电磁阀的不同之处在于能够实现流量的连续调节,因此其设计方法也不同。介绍自行研制的气动比例阀结构,概述其工作原理,详细介绍了动阀芯结构尺寸、线圈组件设计方法,通过增加密封膜片使阀芯受力平衡,使阀芯在运动过程中只受电磁力和弹簧力作用,更容易实现动态平衡并降低电磁铁功耗。为了提高输出电磁力的水平特性,对隔磁环进行了参数化仿真研究,最终确定最优隔磁环参数θ_(2)=60°,Δ_(h)=0.2 mm,θ_(1)=90°,h=1 mm。根据动态平衡确定了弹簧力范围,通过Inventor软件确定了复位弹簧参数,最后对气动比例阀的流量特性进行了试验。试验结果表明:该气动阀的输出流量能够随控制电压实现连续变化,满足比例阀的基本性能。
The difference between proportional valves and solenoid valves is that proportional valves can achieve continuous flow regulation,so their design methods are also different.The structure of the self-developed pneumatic proportional valve was introduced,its working principle was summarized,a detailed introduction to the structural dimensions of the dynamic valve core and the design method of the coil components was provided.The valve core was balanced by adding a sealing diaphragm,so that the valve core was only subjected to electromagnetic and spring forces during movement,making it easier to achieve dynamic balance and reduce the power consumption of the electromagnet.In order to improve the horizontal characteristics of the output electromagnetic force,parameterized simulation research was conducted on the magnetic isolation ring,and the optimal parameters of the magnetic isolation ring were ultimately determinedθ_(2)=60°,Δ_(h)=0.2 mm,θ_(1)=90°,h=1 mm.The spring force range was determined based on dynamic balance,and the reset spring parameters were determined using Inventor software.Finally,the flow characteristics of the pneumatic proportional valve were tested.The test results show that the output flow of the pneumatic valve can continuously change with the control voltage,meeting the basic performance of the proportional valve.
作者
郭大勇
司国雷
唐兵
GUO Dayong;SI Guolei;TANG Bing(Sichuan Aerospace Fenghuo Servo Control Technology Co.,Ltd.,Chengdu Sichuan 611130,China)
出处
《机床与液压》
北大核心
2023年第18期122-128,共7页
Machine Tool & Hydraulics
基金
国家重点研发计划(2019YFB2005100)。
关键词
比例阀
流量连续调节
动态平衡
隔磁环
Proportional valve
Continuous flow regulation
Dynamic balance
Magnetic isolation ring
