COMBINED CYCLE POWER PLANT UNIT Russian patent published in 2023 - IPC F01K23/10 

FIELD: thermal power plants.

SUBSTANCE: combined cycle power plant is proposed, containing a gas turbine unit consisting of a turbocompressor, a combustion chamber, a gas turbine and an electric generator, a waste heat boiler in which the heat exchange surface of a high-pressure steam superheater, the surface of a high-pressure evaporator connected to the drum, and the heat exchange surfaces of a high-pressure water economizer are installed, and a gas condensate heater, a steam turbine unit consisting of a steam turbine with a condenser, an electric generator and a condensate pump, a feedwater deaerator, a feedwater pump and a condensate recirculation pump, while in a single-circuit waste heat boiler for generating water steam after the high-pressure water economizer in series heat exchange surfaces of a two-stage intermediate superheater are placed along the gas flow, and the steam turbine is made of three cylinders and consists of high, medium and low pressure cylinders, while the flow of water vapor exhausted in the high pressure cylinder of the steam turbine is directed to the first stage of the intermediate superheater, where it is superheated and fed into a medium-pressure cylinder of a steam turbine, after expansion in which the flow of water vapor is directed to the second stage of the intermediate superheater, where it is reheated and supplied to the low-pressure cylinder of a steam turbine, in which the expansion process of water vapor generated in the high-pressure evaporator is completed.

EFFECT: increasing the efficiency of the combined cycle unit of a power plant.

1 cl, 1 dwg