Water inlet emergency protection device for ship power supply

The invention discloses a water inlet emergency protection device for ship power supply, belongs to the field of ships, and aims to solve the problems that when an existing water level sensor is cleaned, although the water level sensor can be automatically cleaned through rotation of a motor, the motor can be started only through an external power source, and energy is wasted. A water inlet emergency protection device for ship power supply comprises a water level sensor body, and a rotating mechanism is arranged on the outer side of the water level sensor body, so that the rotating mechanism is driven to ascend and descend when the water level ascends and descends and moves left and right, air flow is generated in a pipeline, and the water inlet emergency protection device is protected. Compared with the prior art, the water level sensor has the advantages that power is provided for cleaning the water level sensor main body through rising and falling of the water level, extra electric power does not need to b