Submersible robot for internal inspection of extra-high voltage alternating-current transformer

A submersible robot for internal inspection of an extra-high voltage alternating-current transformer comprises a dish-shaped shell, a penetrating cavity is formed in the center of the dish-shaped shell, a horizontally-arranged propeller and a vertically-arranged oil discharge rotating sleeve are installed in the penetrating cavity, an inner cavity of the oil discharge rotating sleeve is communicated with the penetrating cavity, axial flow fan blades are connected to the periphery of the oil discharge rotating sleeve, and the outer periphery of the axial flow fan blades is communicated with the propeller. A first outer gear ring is installed on the oil discharge rotating sleeve, and an advancing direction rotating sleeve matched with the oil discharge rotating sleeve is installed in the dish-shaped shell. The beneficial effects of the utility model are that: can carry out the comprehensive inspection of transformer interior, simplify the maintenance flow, greatly reduce the workload of on-site maintainers, avo