Power generation device based on steam turbine

The power generation device comprises an evaporation bin, a condensation bin and a cold water bin, the outer side of the upper portion of the evaporation bin is sleeved with the condensation bin, the outer side of the condensation bin is covered with the cold water bin, and a plurality of heat exchange plates are embedded in the peripheral wall of the condensation bin at equal intervals. An aeration pipe set is fixedly embedded between the bottom of the condensation bin and the bottom of the cold water bin, through the arrangement of a conical opening and a turbine, high-pressure rapid steam flow can be formed in the evaporation bin, the steam flow drives the turbine to rotate, the rotary steam power device can be driven to generate electricity, the utilized steam is preliminarily cooled by a heat exchange plate in the condensation bin, and the steam is cooled by the heat exchange plate. According to the utility model, the steam is heated to form condensed water, the uncondensed steam can be aerated into the