High-capacity water tank liquid level detection and correction device

The utility model relates to a high-capacity water tank liquid level detection and correction device which comprises a linear sliding rail fixedly installed on the top face of a water tank and located on one side of an inspection well, a sliding block is installed on the linear sliding rail, and a power mechanism used for driving the sliding block to be away from or close to the inspection well is installed on the top face of the water tank. The sliding block is provided with a lifting mechanism used for containing an ultrasonic liquid level meter and a supporting mechanism used for opening one side of the metal well lid, and the other side of the metal well lid is hinged to the inspection well. In combination with the top surface layout and ingenious design of the water tank, the ultrasonic liquid level meter enters and exits and the metal well lid is opened and closed synchronously by adjusting the positions of the sliding blocks, manual opening and closing of the metal well lid are avoided in the detection