SU775357A1 - Heat generating electric power station - Google Patents

Description

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The invention relates to the field of power engineering, mainly to thermal circuits of thermal power plants.

A thermal electric station is known that contains at least two turbo-installations with sampling nozzles, high and low pressure regenerative preheaters, deaerators and condensers, one of which is equipped with an intermediate superheater l.

The disadvantages of the well-known thermal power plant are the overload of the last stages of the condensation steam turbine installation, which occurs when the steam displaces its own unregulated regenerative selections with the steam of the adjustable heat extraction steam turbine, and the lack of reheat heating in the condensing steam turbine installation, which reduces the efficiency of the entire thermal power station.

The aim of the invention is to increase the economy and reliability of a thermal power station.

To achieve the goal. at least one regenerative, high-pressure heater of the turbine unit with an intermediate superheater is connected to the tapping port of the corresponding pressure of another turbine unit, and at least one low-pressure heater of the latter is connected to the pattern10 of the appropriate pressure turbine unit with an intermediate superheater.

The drawing shows a diagram of a thermal power plant.

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The heat electric station contains a steam generator 1 connected by a steam pipe 2 to a steam turbine unit 3 made with a reheater 4 and a pipe -5 connected to a pipe 20 to a condenser 6. A condenser 6 is connected to a condensate line 7 through a regenerative heater 8 of low pressure, deaerator 9, feed pump 10, high-pressure regenerative heaters 11 and 12 with a steam generator 1. A steam turbine 3. is connected by nozzles 13–15, respectively, with a high-pressure regenerative heater 12, a deaerator 9 and a low pressure regenerative preheater 8. Besides . In addition, the heat electric station also contains a steam generator 16 connected by a steam line 17 to a steam turbine unit 18 without reheating. The latter, in turn, is connected to condenser 20 by means of a pipe 19 to a condenser 20. A condenser 20 is connected to a low pressure preheater 22, a deaerator 23, a nutrient pump 24, regenerative heater

25 high pressure and steam generator 16. Steam turbo-installation 18 without reheat connected by a pipe

26 selection with a regenerative preheater 25 high pressure, a nozzle 27 of selection with a regenerative heater 11 high pressure and a nozzle 28 of the selection with deaerator 2

A low pressure regenerative preheater 22 is connected by a sampling nozzle 2 to a steam turbine unit 3 with a reheater 4.

The heat electric station works in the following way.

Steam from steam generator 1 through steam line 2 is supplied for mechanical work to steam turbine unit 3 with reheater 4, after which it is condensed in a condenser using condensate line 7 through condensate line 7 through a low-pressure regenerative heater 8, deaerator 9 feed pump 10 and regenerative heaters 11 and 12 high pressure to the steam generator 1. In the course of its movement, the condensate is heated by selected low pressure steam, sent to the low pressure regenerative preheater 8 by patr The condensate is deaerated in deaerator 9 and heated in a high-pressure regenerative preheater 11, selected steam, entering through a withdrawal pipe 27 from the steam turbine 18 without reheating, and in a regenerative preheater 12 high-pressure steam in the steam unit 18, without reheating, and in the regenerative preheater 12 high-pressure steam in the steam supply unit 18 without steam reheating, and in the regenerative preheater 12 high-pressure steam with a vapor generator 18, without reheating, and in the regenerative preheater 12 high-pressure steam with a vapor generator 18, without reheating, and in the regenerative preheater 12 high-pressure steam with a vapor generator 18, without reheating, and in the regenerative preheater 12 high-pressure steam with a vapor generator 18, without reheating, and in the regenerative preheater 12 high-pressure steam with a vapor steam generator 18, without reheating, and in the regenerative preheater 12 high-pressure steam with a vapor pipe 18, without steam reheating, and in the regenerative preheater 12 high-pressure steam with a vapor generator 18, without heat recovery outlet pipe 13 from steam turbine unit 3 with reheat.

Steam from the steam generator 16 enters through the steam line 17 to the steam turbine unit 18 without reheat. Here, he performs mechanical work and enters condenser 20 through conduit 19, where it condenses and enters condensate in condensate through condensate conduit 21 to low pressure regenerative preheater 22. Here, the condensate is heated with steam coming through a suction port 28 from a steam turbine unit 3 with a reheater 4. Then the condensate is deaerated in deaerator 23 and pumped through feed pump 24 through a high-pressure regenerative heater 25 to a steam generator 16. In a high-pressure regenerative heater 25, a condensate preheater is heated. coming through the nozzle 26 from the steam turbine 18 without reheat.

The implementation of this thermal power plant makes it possible to increase the thermal efficiency of its heat power equipment as a result of displacement of high-pressure app with high-temperature app, steam turbine installation without heat recovery of high-temperature selective steam of a high-pressure steam turbine power unit, and accordingly displacing 5 selective steam of a high pressure steam plant with a sprom overheating unit, and accordingly displacing 5 high-pressure steam steam generator with a replacement of the high-pressure steam turbine power unit and, accordingly, displacing 5 selective steam of a high pressure steam plant with a sprom overheating unit, and accordingly displacing 5 selective steam of a low-pressure app with a spherical over-heat installation and displacing 5 selective steam of a low-pressure app with a spraying overheating unit, displacing 5 selective steam of a low-time application, and replacing 5 high-pressure steam supply units with pressure displacement, displacing 5 selective steam of a low-pressure app, and eliminating 5 pressurized steam turbine units. As a result of the latter, uniform loading of the last stages of steam turbines is achieved and, as a result, their operational reliability increases.

Claims (1)

1. USSR author's certificate Nf 552407, M.kl..P 01 K 17/00., 1974.