THERMAL POWER PLANT Russian patent published in 2019 - IPC F01K13/00 F01K7/38 

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering and can be used in thermal power plants. Technical result is achieved by the fact that a thermal power plant comprises a steam turbine unit consisting of a steam boiler connected through a superheater with a high-pressure cylinder of the steam turbine unit, which is mechanically connected to the low-pressure cylinder of the steam turbine unit, high-pressure cylinder of steam-turbine unit is connected, in its turn, with intermediate superheater, with third and first high-pressure heaters on hot side, deaerator and fourth low-pressure heater on hot side through withdrawals, as well as with steam cylinder of low pressure steam turbine unit, which is drive for steam turbine unit electric generator, intermediate superheater is connected to high-pressure cylinder of steam-turbine unit, low-pressure cylinder of steam-turbine unit is connected to first, second and third low pressure heaters on hot side through separators and condenser of steam-turbine unit, condenser of steam turbine unit is connected to condensate pump of steam turbine unit, steam turbine unit steam pump is connected to first low pressure heater on cold side, first, second, third and fourth low pressure heaters are sequentially connected to each other along cold side, fourth low pressure heater on cold side is connected to deaerator, deaerator through steam turbine unit feed pump is connected to first high pressure heater on cold side, first high-pressure heater on hot side is connected to deaerator, and on cold side – to second high-pressure heater, second high-pressure heater on hot side is connected to first high-pressure heater, and by cold – to third high-pressure heater, the third high-pressure heater on the hot side is connected to the second high pressure heater, and along the cold one – to the steam boiler, at that the second high pressure heater on the hot side is also connected to the medium pressure steam-gas unit drum, and the steam turbine unit steam turbine pump is also connected to the steam-gas unit condensate pump, consisting of the compressor connected through the combustion chamber to the gas turbine, which is drive for the first combined steam and gas unit electric generator, gas turbine is connected to waste heat boiler, which, in its turn, consists of superheater, connected on hot side with high pressure evaporator, and by cold – with high pressure cylinder of steam-gas unit, which is mechanically connected to cylinder of average pressure of steam-gas unit, high-pressure evaporator on hot side is connected to superheater, and on cold side – to high-pressure drum of steam-gas unit, superheater on the hot side is connected to the medium pressure evaporator, and along the cold side – to the medium pressure cylinder of the steam-gas unit, which is mechanically connected to the low-pressure cylinder of the steam-gas unit, medium pressure evaporator on hot side is connected to low pressure superheater, and on cold side to medium pressure steam generator of steam and gas unit, low-pressure superheater on the hot side is connected to the high-pressure economizer, and along the cold side – to the steam cylinder of the steam-gas unit, high-pressure economizer on hot side is connected to medium-pressure economizer, and on cold side – to high-pressure drum of steam-gas unit, medium pressure economizer on hot side is connected to low pressure evaporator, and on cold side is connected to medium pressure steam-gas unit drum, low pressure evaporator on hot side is connected to gas heater of condensate, and on cold side – to low pressure drum of steam-gas unit, gas heater of condensate on hot side is connected to atmosphere, and along cold side – to low-pressure drum of steam-gas unit, low-pressure drum of the vapor-gas unit is connected to the low-pressure evaporator through water space and through the medium and high pressure pumps of the steam-gas unit with the medium and high pressure economisers respectively, and along the vapor space – to the low pressure steam superheater, medium-pressure steam and gas unit drum by water space is connected to medium pressure evaporator, and by steam - with superheater, high-pressure drum of the steam-and-gas unit is connected to the high-pressure evaporator through the water space, and to the high-pressure steam generator via the steam chamber and to the superheater, high-pressure cylinder of the steam and gas unit is connected to the superheater of the medium pressure, the cylinder of medium pressure of the steam-gas unit is connected to the LP cylinder of the steam-gas unit, low-pressure cylinder of the steam-gas unit, which is a drive for the second electric generator of the combined-cycle unit, is connected to the steam-gas unit capacitor, condenser of the steam-gas unit is connected to the condensate pump of the steam-gas unit, the condensate pump of the steam-gas unit is connected to the gas heater of the condensate.

EFFECT: improving electric efficiency of thermal power plant and increasing its service life.

1 cl, 1 dwg