Exhaust steam recovery device of power boiler deaerator

The utility model discloses a power boiler deaerator vapor recovery unit comprising a deaerator which is connected with a water replenishing channel and supplies the deoxidized water to the power boiler, wherein a heat exchanger is arranged on the vapor discharging port of the deaeraor which discharges the vapor through the hear exchanger of which the cooling water export of the heat exchanger is communicated with the cooling water recovering main pipe, the vapor discharging of the heat exchanger is communicated with a hydrophobic dilator through which the vapor is discharged, and the hot water export of the heat exchanger is communicated with the water replenishing pipe which supplies water to the deaeretor. The utility model is capable of recovering cooling water, utilizing discharged vapor to heat the power boiler water, reclaiming heat energy, and eliminating vapor discharging noise. The utility model is widely applicable to power boiler deaerator vapor.