OPERATING METHOD OF COMBINED CYCLE PLANT Russian patent published in 2011 - IPC F01K21/04 

FIELD: power industry.

SUBSTANCE: operating method of combined cycle plant consists in the fact that the compressor compresses the ambient air which is supplied to the burning zone of combustion chamber to which there simultaneously supplied is fuel; combustion products are mixed in mixing zone with water vapour to obtain steam-gas mixture at the combustion chamber outlet, which is supplied as working medium to steam-gas turbine, then water vapour is condensed in condenser, negative pressure is created with additional compressor discharging non-condensed gaseous combustion products, and then condensed water is supplied in separate flows to storage tank and to heat receivers for pre-heating; then water/water vapour flows from heat exchangers are combined in mixer, intermediate extraction of superheated steam-gas mixture from turbine is performed, and plant is equipped with regenerative and/or heat extraction heat exchangers; at that, heat of steam-gas mixture extracted from intermediate turbine extraction heats water/water vapour supplied from mixer in regenerative heat exchanger.

EFFECT: invention allows increasing useful power and efficiency of steam-gas plant, improving operating reliability and reducing costs for heat-extraction needs.

1 dwg