| 摘要 |
FIELD: power industry.SUBSTANCE: invention relates to power engineering and can be used in the heat power plants (HPP) for utilisation of discharge low-grade heat in condensers of steam turbines of heat power plants, utilisation of low-grade heat of oil supply system of the steam turbine bearings and utilisation of low-grade heat of steam of heating extractions from the steam turbine. The method of utilisation of heat energy of heat power plant includes pumping of the spent steam from the steam turbine into the condenser steam space, pumping of condensate into the regeneration system by the condensate pump, while the steam with heating parameters from the steam turbine extractions is supplied to the steam space of the lower and upper system heaters for condensation, and the waste low-grade heat energy of spent steam and low-grade heat of heating extraction steam are utilised. In heat power plants in addition to the condensation unit is used which has the steam turbine condenser with production steam extraction and oil supply system with the oil cooler of bearings and in addition the utilisation of high-grade heat of industrial steam extraction and utilisation of low-grade heat of oil supply system are performed, while the named utilisations are performed by means of the heat engine with the circulation circuit according to Renkin organic cycle using the low-boiling working body which is compressed in the condensate pump, heated in the condenser, in the oil cooler, in lower and in upper system heaters of the steam turbine, heated and evaporated in the steam turbine condenser with production steam extraction, expanded in the turbine expander and condensed in the heat exchanger condenser of the heat engine.EFFECT: improvement of efficiency of heat power plant, increase of service and reliability of operation of the steam turbine condenser and decrease of thermal emissions into environment.3 cl, 1 dwg |
