Counterweight device of offshore wind turbine generator

The utility model discloses a counterweight device of an offshore wind turbine generator, relates to the technical field of counterweights of offshore wind turbines, and aims to solve the problems that an existing counterweight device is simple in structure, does not have an active adjusting structure and function, and needs to be improved in practicability and functionality. A plurality of mounting plates are fixedly connected to the edge of the bottom end face of the counterweight tank, guide pipes are fixedly connected into mounting holes in the outer surfaces of the mounting plates, a support is arranged at one end of each guide pipe, a submersible motor is fixedly mounted on the end face of each support, and fan blades are fixedly mounted at one end of a rotating shaft of each submersible motor. The fan blades are arranged in the guide pipe, and the guide pipe is inclined upwards. And when the wind turbine unit is blown by wind and inclines, the corresponding adjusting structure is actively started, and