| 摘要 |
FIELD: power industry.SUBSTANCE: invention can be used in heat power plants (HPP) for utilisation of low-grade heat of oil supply system of steam turbine bearings, utilisation of excess low-grade heat of the return water system and utilisation of high-grade heat of industrial steam extraction for additional electric power generation. Steam from the steam turbine extractions is supplied into steam space of the upper and lower system heaters, and system water is supplied from consumers through the return system water pipeline to the heat exchanger cooler of system water. The spent steam is supplied from the steam turbine into the steam space of the condenser and the condensate by means of the condensate pump of the steam turbine condenser is supplied to the regeneration system. In the steam turbine the oil supply system with oil cooler for steam turbine bearings is used. The condensation unit is used which has a steam turbine condenser with production steam extraction. Utilisation of low-grade heat of oil supply system of steam turbine bearings and utilisation of high-grade heat of industrial steam extraction are performed. All named utilisations are performed by means of the heat engine with the closed circulation circuit, operating according to Rankine organic cycle where 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 the oil cooler, heated in the heat exchanger cooler of system water, evaporated and overheated in the steam turbine condenser with production steam extraction, expanded in the turbine expander of the heat engine and condensed in the heat exchanger condenser of the heat engine.EFFECT: increased efficiency ratio.3 cl, 1 dwg |
