电磁阀释放电流出现双波峰的机理分析

由于某型号电磁阀批生产过程中,其释放电流曲线时常出现双波峰现象,于是分别从物理及结构方面分析了双波峰产生的机理和原因,指出电磁阀吸合、释放电流曲线出现波峰都是由阀芯的运动引起,主要的影响因素有三个:线圈匝数、圆柱弹簧、碟簧,通过调整线圈匝数、圆柱弹簧力及更换碟簧,可以消除或改善双波峰现象。实际工作证明只要实际释放时间满足要求,释放电流曲线上出现双波峰的电磁阀属于合格产品。

Mechanism analysis of double-peak release current curve of solenoid valve

The release current curve of a type of solenoid valve was checked having double peaks.The mechanism is discussed from physics and structure in this paper.The results indicated that the movement of the valve core causes peaks in current curve.The cause of deceleration is that force of the dish spring release rapidly in little distance and solenoid force blocks the movement of the core,so many factors can affect the attenuation rate of dish spring force or solenoid force causing double peaks.Main factors that create double peaks in release current curve were found to be circle number of windings,column spring and dish sping.The results proved that valves with double peaks appeared on the release current curve are qualified products.