| 摘要 |
FIELD: power industry.SUBSTANCE: invention relates to power engineering and can be used in the heat power plants (HPP) for utilisation of waste low-grade heat in condensers of steam turbines of heat power plants, utilisation of low-grade heat of oil supply system of bearings of the steam turbine, utilisation of low-grade heat of oil supply system of bearings of the steam turbine with production steam extraction, utilisation of excessive low-grade heat of return network water, and utilisation of high-grade heat of industrial steam extraction. The method of utilisation of heat energy generated by heat power plants includes the supply of heating performance steam from the steam turbine extraction into the steam space of the lower and upper network heaters, supply of network water from consumers along the return network water pipeline into the lower and upper network heaters, then the network water is pumped to the network water supply pipeline, and the spent steam is pumped from the steam turbine to the steam space of the condenser for condensation on the surface of condenser tubes by cooling liquid, and the condensate is pumped to the regeneration system, and in the steam turbine the oil supply system with oil cooler for steam turbine bearings is used, and at steam condensation the utilisation of waste low-potential heat energy of steam spent in the turbine is performed by means of cooling liquid. In heat power plants the heat exchanger cooler for network water is used which is installed on the return network water pipeline, and also the condensation unit with the steam turbine condenser with production steam extraction and oil supply system with oil cooler for bearings, and in addition the utilisation of low-potential heat of oil supply system of bearings of the steam turbine, oil supply system of the steam turbine bearings with production steam extraction, return network water and high-potential heat of production steam extraction, while all the named utilisations are performed by means of the heat engine with the closed circulation circuit according to Renkin organic cycle with the low-boiling working body, while it is compressed in the condensate pump of the heat engine, heated in the condenser of the steam turbine, in the oil supply cooler, in the oil cooler, in the heat exchanger cooler of network water, heated and evaporated in the steam turbine condenser, expanded in the turbine expander and condensed in the heat exchanger condenser.EFFECT: increase of efficiency of heat power plant and decrease of heat emissions into environment.3 cl, 1 dwg |
