What is fusible plug?

Fusible plug is a protective device of a coupler. The working temperature of the turbine engine oil is not allowed to exceed 100 ° C. Excessive oil temperature can easily cause oil quality. At the same time, the oil temperature is too high, the working conditions of the coupler meter worsen, and the work of the bearing is extremely unstable, causing the doll damage and bearing damage. In order to prevent an accident or prevent the oil temperature too high, there are four fusible plugs on the case of the coupling rotation, and the inside is equipped with a low melting point metal. When the oil temperature in the working cavity of the couple rises to a certain temperature, it is easy to molten the metal after softening. The working oil is discharged from the four holes. The oil temperature in the coupler device no longer continues to rise, which plays a protective role.