Steam extraction recycling device in steam turbine

The utility model belongs to the technical field of energy-saving transformation, and relates to a steam extraction recycling device in a steam turbine, which comprises a steam turbine, a gas mixing tank and a gasification furnace which are communicated in sequence, and further comprises an adjusting control valve group, the steam turbine is communicated with the gas mixing tank through an adjusting control valve group; the adjusting control valve group comprises a front control valve, a main control valve, a rear control valve and an auxiliary control valve; the steam turbine is communicated with the gas mixing tank through the front control valve, the main control valve and the rear control valve in sequence; and the steam turbine is communicated with the gas mixing tank through an auxiliary control valve. No condensate is generated in steam extraction, steam consumption is reduced, recycling of the steam extraction is achieved, dead steam of a steam turbine is reduced, and energy consumption of an air cool