Solenoid valve coil for leadless guide safety lock of excavator

First, the role of the product

After electrifying, the movable iron core inside the solenoid valve coil is attracted by the coil to move, and the iron ring drives the valve core to move, which can change the conduction of the valve. At present, there are two modes on the market: dry mode and wet mode, but this is only worthy of the working environment of the coil and will not have any great influence on the valve action.

The inductance of the air-core coil is different from that of the coil after the iron core is added. The inductance of the former is much smaller than that of the latter. When the coil is electrified, 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 with the position of the iron core, that is to say, the impedance will change with the position of the iron core. When the impedance is small, the current flowing through the coil will increase.

Second, the reason for the high temperature

When the coil is in working condition, it is normal to have proper heat dissipation, but if the temperature is too high, it needs to be vigilant.

There are many reasons for the high temperature. Among them, the high ambient temperature will lead to the high temperature of the coil, so summer is the high season for the coil temperature. At this time, it is necessary to pay attention to reducing the ambient temperature.

If the user does not choose the right type, it will also cause the coil temperature to be too high. There are two types of coils: normally open and normally closed. Because the solenoid valve is normally closed, it needs to be normally open during use, which will lead to the coil temperature being too high, so it is very important to choose the right type.

In addition, if the coil is overloaded for a long time, it will also cause excessive temperature, such as excessive power supply voltage, excessive pressure, excessive medium temperature and so on.