Hydraulic coil solenoid valve coil inner hole 9mm Height 29.5mm

Solenoid valve coil function

The movable core in the solenoid valve coil is attracted by the coil when the valve is energized, driving the valve core to move, thus changing the on-state of the valve; The so-called dry or wet type only refers to the working environment of the coil, and there is no big difference in the valve action; However, the inductance of a hollow coil and the inductance after the addition of an iron core in the coil is different, the former is small, the latter is large, when the coil through alternating current, the impedance generated by the coil is not the same, for the same coil, plus the same frequency of alternating current, the inductance will vary with the core position, that is, its impedance varies with the core position, the impedance is small. The current flowing through the coil will increase.

After the active core inside the solenoid valve coil is energized, it is attracted by the coil and moves, and the movement of the spool driven by the iron ring can change the conduction of the valve. At present, there are two modes on the market, dry and wet, but this is only worth the working environment of the coil, and will not have a big impact on the valve action.

The inductance of the hollow coil and the inductance of the coil inside the iron core is not the same, the inductance of the former is much smaller than the latter, when the coil is energized, the impedance generated by the coil will be different, for the same coil, if the frequency of the connected alternating current is the same, the inductance will change because of the different position of the iron core. That is, the impedance will change with the position of the core, and when the impedance is small, the current flowing through the coil will increase.