Excavator coil Hydraulic coil solenoid valve coil 3013118

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 adding 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,

When an alternating current of the same frequency is added, the inductance will change with the position of the core, that is, its impedance will change with the position of the core, and the current flowing through the coil will increase when the impedance is small.

    There are many kinds of solenoid valves, there are control gas, liquid (such as oil, water), most of them are wire trap on the valve body, can be separated, the spool is made of ferromagnetic material, by which the magnetic force generated when the coil is energized attracts the spool, and the valve is driven by the spool to open or close. The coil can be removed separately. The solenoid valve is used to control the opening or closing of the gas pipeline. The movable core in the solenoid valve coil is attracted by the coil when the valve is energized, and drives the spool to move to change the on-state of the valve.

     The structure of solenoid valve is composed of electromagnetic coil and magnetism, and it is a valve body with one or more holes. When the coil is energized or de-energized, the operation of the magnetic core will cause the fluid to pass through the valve body or be cut off, so as to change the direction of the fluid. The burning of solenoid valve coil will cause solenoid valve failure, and the failure of solenoid valve will directly affect the action of switching valve and regulating valve. What are the reasons for the burning of the solenoid valve coil? One of the reasons is that when the coil is wet, magnetic leakage occurs due to its poor insulation, resulting in excessive current in the coil and burning. Therefore, attention should be paid to preventing rain from entering the solenoid valve. In addition, the spring is too hard, resulting in excessive reaction force, too few coil turns and insufficient suction, which will also cause the solenoid valve coil to burn.