| 摘要 |
FIELD: power industry.SUBSTANCE: invention can be used in heat power plants (HPP) for utilisation of excess heat energy generated by HPP systems during its operation. In the heat exchanger cooler of network water the utilisation of excess low-grade heat of the return network water, the utilisation of low-grade heat of oil supply system of steam turbine bearings and steam turbine bearings with production steam withdrawal, and also utilisation of high-grade heat of production steam withdrawal are performed. All the named utilisations are performed by means of the heat engine with the closed circulation circuit, operating according to Rankine organic cycle. The cooling liquid is the low-boiling working body circulating in the closed circuit. The working body is compressed in the condensate pump of the heat engine, heated in oil coolers of systems of oil supply of bearings, heated in the heat exchanger cooler of system water, evaporated and overheated in the steam turbine condenser with production steam withdrawal, expanded in the turbine expander and condensed in the heat exchanger condenser of the heat engine.EFFECT: method provides increase of efficiency of heat power plant due to additional electric power generation at utilisation of excess steam energy generated by systems of heat power plant.3 cl, 1 dwg, 1 ex |
