| 摘要 |
FIELD: power engineering.SUBSTANCE: method of thermal power plant operation, according to which steam supplied in a forward-flow steam boiler after a live steam superheater is sent into a high pressure cylinder of a steam turbine, then a part of spent steam is sent to the second high pressure heater along with the feedwater flow and into an expansion turbine, the remaining part of steam arrives into a reheater, and then into a medium pressure cylinder and a low pressure cylinder of the turbine, afterwards the steam is condensed in a condenser and with a condensate pump is sent via low pressure heaters, where condensate is heated by steam of bleeds and steam from a turbodrive of a feed pump and then arrives into a deaerator of feedwater, where it is heated and deaerated by steam that exits from the expansion turbine; further feedwater from the deaerator of feedwater is supplied with a feed pump to the first high pressure heater along with the feedwater flow, where it is heated by steam from the expansion turbine, further feedwater arrives into the subsequent high pressure heaters, where it is heated by steam of the second and first bleeds of the steam turbine, afterwards it is sent into the forward-flow steam boiler.EFFECT: invention makes it possible to reduce difference of temperatures between steam at the inlet to the first high pressure heater along feedwater flow and of feedwater at the outlet from it.1 dwg |
