STEAM-GAS PLANT Russian patent published in 2019 - IPC F01K23/04 

FIELD: power engineering.

SUBSTANCE: invention relates to heat engineering, namely to installations with more than two motors supplying power to external consumers and operating on different working bodies with thermally coupled engine cycles, and is intended for use at thermal power plants. Steam-gas plant comprises gas turbine plant connected by gas duct with waste heat boiler, which is equipped with gas duct for discharge of gases into stack, and in which interconnected heating surfaces of economizer, evaporator and superheater are built-in, which is connected via steam line with high-pressure steam turbine. First recuperator by steam line is connected to condenser-evaporator, which is connected to first pump by water line, and the low-pressure steam turbine by one steam line through the first recuperator is connected to the condenser-evaporator, and the other through the second recuperator is connected to the condenser, which through the second pump is connected to the second recuperator via the water line. Additionally, heating surfaces of an intermediate superheater are built in the heat recovery steam generator. High-pressure steam turbine via intermediate superheater by steam line is connected to medium-pressure steam turbine, which is connected to first recuperator by steam line, at that cooler-heater is connected with the first pump and economizer of waste-heat boiler and pipelines with condenser-evaporator and with second recuperator. Medium pressure turbine by one steam line is connected to the first recuperator, and by another steam line with heater, which is connected with cooler-heater and condenser-evaporator by pipelines, and by water line with the third pump, which is connected to condenser-evaporator. High, intermediate and low pressure steam turbines are connected through a common shaft to an electric generator.

EFFECT: increasing power and efficiency of electric power generation.

1 cl, 1 dwg