Electric heat energy driving device

The utility model belongs to the technical field of generator auxiliary equipment, and particularly relates to an electric power heat energy driving device which comprises a turbine, a main air supply path and a main exhaust path, and a negative pressure cavity is arranged on the main exhaust path in series. The system further comprises a branch air supply path, the air inlet end of the branch air supply path is connected with the main air supply path, the air outlet end of the branch air supply path and the air outlet end of the main exhaust path are jointly connected with a turbine exhaust fan, and high-pressure steam in the branch air supply path drives the turbine exhaust fan to rotate so as to accelerate exhaust of the main exhaust path. The turbine exhaust fan is driven by the branch air supply path of the high-pressure steam, the main exhaust path is subjected to accelerated exhaust, the exhaust speed is slightly larger than the air supply speed of the main air supply path for the turbine, at the momen