OPERATING METHOD OF COMBINED CYCLE PLANT Russian patent published in 2010 - IPC F01K21/04 

FIELD: power industry.

SUBSTANCE: operating method of combined cycle plant consists in compressing the ambient air by compressor which is then supplied to combustion zone of combustion chamber to which there also supplied is fuel; obtained combustion products in combustion zone are mixed with water vapour so that working steam-gaseous body is obtained at the chamber outlet as steam-gas mixture, which is supplied to turbine in which the flow energy of steam-gas mixture is converted to mechanical energy of turbine rotor rotation, by means of which rotor of electric generator is brought into rotation for generation with the latter of electric energy; then water vapour is condensed in the condenser and non-condensed gaseous combustion products are separated from it; the plant is equipped with subsidiary compressor, heat exchanger for intermediate cooling of non-condensed gaseous combustion products, heat exchanger for intermediate cooling of compressed air; heated water that comes from the heat exchangers is mixed in the agitator; if turbine blades cooling is specified by the structure, water vapour that goes out of the turbine after blades cooling is supplied to the agitator.

EFFECT: invention allows decreasing expenses for compressors operation and increasing useful capacity of turbine and the whole combined cycle plant.

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