FIELD: heat power engineering.
SUBSTANCE: invention is designed for creating steam turbine power plants with two intermediate reheating of steam after high pressure and mean pressure cylinders respectively. In known system of second intermediate reheating of steam with heat exchanger installed in steam bypass receiver between mean and low pressure cylinders, heart exchanger is connected, according to first design version, at outlet to inlet of boiler economizer, and at inlet, to outlet of second economizer. According to second design version, heat exchanger at heating side is connected to self-contained turbine air heater installed in gas duct of boiler.
EFFECT: improved reliability of operation of steam turbine power plant.
3 cl, 2 dwg
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