OPERATING METHOD OF COMBINED-CYCLE TURBINE PLANT, AND COMBINED-CYCLE TURBINE PLANT DESIGNED FOR THAT PURPOSE Russian patent published in 2012 - IPC F22D7/00 F01K23/10 

FIELD: heating.

SUBSTANCE: invention relates to power industry. When the combined-cycle turbine plant is in operation, the gas leaving the gas turbine flows through heat recovery steam generator in which the circulating device bringing the steam turbine into movement passes in the circuit of circulating medium, which includes a set of pressure stages; at that, at least one pressure stage has evaporation bypass with steam drum, with many downtake pipes connected to steam drum and with many rising pipes connected after downtake pipes and also connected to the steam drum and heated with flue gas in HRSG. Height of liquid column formed with circulating medium in the downtake pipes connected to the steam drum is controlled, and thus, temporary dry mode of operation of evaporation bypass is determined and prevented.

EFFECT: invention allows providing flexibility of adaptation of the operation process to various requirements at maintaining high reliability and operating safety.

13 cl, 2 dwg