If the solenoid valve coil is damaged, it will affect the normal use, so what are the factors caused by the damage of the solenoid valve coil?

 

 

 

The solenoid valve coil terminal has water because of poor sealing, and the phenomenon of corrosion of the terminal all out of the positive pole, and the negative pole is intact.

 

 

 

Therefore, it can be determined that the solenoid valve coil sealing and water is the primary cause of corrosion of the terminal. However, due to the harsh field conditions, the impact of coal on the coil is inevitable, so it is impossible to guarantee that there is no water at the coil terminal.

 

 

 

Due to the presence of water in the terminal, and the water contains salt, acting as an electrolyte; So you have a galvanic reaction

 

 

 

For the negative terminal, in the process of energizing the coil, all the electrons flow to the negative terminal, and the corrosion current on the surface of the negative terminal decreases to zero or close to zero, so as to inhibit the loss of electrons in the terminal, so as to prevent the corrosion of the terminal.

 

 

 

This is called impressed current cathodic protection.

 

 

 

For the positive electrode, on the contrary, it becomes the sacrificial anode in the cathodic protection of the sacrificial anode.

 

 

 

Therefore, the solenoid valve coil damage is often caused by these factors.