HEAT POWER PLANT OPERATION MODE Russian patent published in 2015 - IPC F01K17/02 F01K23/00 F01C1/00 

FIELD: power industry.

SUBSTANCE: oil supply system for the steam turbine bearings is used which consists of a cooler, a tank and a pump, the cooling heat exchanger of network water which is installed on the return network water pipeline, the condensation unit consisting of the steam turbine condenser with the production steam withdrawal and the oil supply system with oil cooler for its bearings. The utilisation of low-grade heat of the oil supply system of the steam turbine bearings, utilisation of low-grade heat of oil supply system of the steam turbine bearings with production steam withdrawal, utilisation of low-grade heat of the return network water and utilisation of high-grade heat of production steam withdrawal are performed. The named utilisations are performed by means of the heat engine with the closed circulation circuit, operating according to Rankine organic cycle where the low-boiling working body is used. The low-boiling working body is compressed in the condensate pump of the heat engine, heated in the recuperative heat exchanger of the heat engine, heated in the steam turbine condenser, heated in the oil cooler, heated in the heat exchanger cooler of network water, heated and evaporated in the steam turbine condenser with production steam withdrawal, expanded in the turbine expander of the heat engine, its temperature is decreased in the recuperative heat exchanger of the heat engine and condensed in the condensing heat exchanger of the heat engine.

EFFECT: additional power generation, increase of service life and reliability of plant operation.

3 cl, 1 dwg