Cleaning device for boiler unit of thermal power plant

The utility model discloses a thermal power plant boiler unit cleaning device which comprises a telescopic cylinder, a first motor and a cleaning assembly, the telescopic cylinder is installed on the outer side wall of a flue, a piston rod of the telescopic cylinder penetrates through the side wall of the flue and extends into the flue, the first motor is installed at the end of the piston rod, and the cleaning assembly is installed on an output shaft of the first motor. The cleaning assembly is provided with a brush plate. The utility model belongs to the technical field of boiler equipment of a thermal power plant, and aims to solve the problem of cleaning an ash deposition layer on the inner wall of a flue in the prior art. The flue cleaning device has the technical effects that the telescopic cylinder is arranged, so that the cleaning assembly can be driven to move in the radial direction of the flue; by arranging the first motor, the sweeping assembly can be driven to rotate, and therefore sweeping opera