Thermal electric power station

FIELD: electrical engineering.

SUBSTANCE: thermal power station comprises steam turbine with high-pressure bleeder heaters connected to turbine feed water line downstream feed water deareator and, following the heating medium, to the turbine regenerative steam extraction lines. The high-pressure regenerative heater steam condensate is forced, via condensate line, into the drum-evaporator. The steam produced in the aforesaid drum is forced, via a steam line and as an additional heating agent, into the feed water deareator. The rest condensate in the drum-evaporator is forced there from, via the condensate line and as a heating agent, in the extra feed water vacuum deareator. The said additional feed water prepared in the aforesaid vacuum deareator is forced by the feed pump into the primary condensate line.

EFFECT: higher efficiency of thermal electric power station.

1 cl, 1 dwg

 

The invention relates to the field of power engineering and can be used in thermal power plants.

Known analog - thermal power plant containing steam turbine included in the feedwater pipeline turbine after deaerator feedwater regenerative high pressure heaters, connected in the heating medium to the regenerative extraction steam turbine (Ain, Bmilanov, Vinebranch, Enterica. Heat: the Textbook for high schools; edited Any. -M.: Stroiizdat, 1982. - 336 S., s-275). This analog adopted as a prototype.

The disadvantages of analogue and prototype is the low efficiency of thermal power plants due to inefficient use of high-grade condensate heaters high pressure due to its removal into the deaerator feed water.

The technical result achieved by the present invention is to increase the efficiency of thermal power plants by increasing efficiency in the deaeration unit as heating agents streams obtained by the separation in the drum evaporator condensate regenerative high pressure heaters.

To achieve this result, the proposed thermal power plant containing a steam turbine, is included in the pipeline p. the test water turbine after deaerator feedwater regenerative heaters high pressure, connected via the heating medium to the regenerative extraction steam turbine.

The peculiarity lies in the fact that during the first regenerative feedwater heater high pressure is connected by a pipeline with the drum evaporator, connected by a couple to the deaerator feedwater, and condensate is connected to the vacuum deaerator incremental feed water.

New interconnection element allows to raise efficiency of use of high-grade condensate regenerative heaters high pressure, which increases the efficiency of thermal power plants by reducing the costs of heating agents in the deaeration units.

Next, consider the information, confirming the possibility of carrying out the invention with getting the required technical result.

The drawing shows a schematic diagram of thermal power station. The station contains a boiler 1 steam turbine 2 with regenerative filters, the condenser 3, the pipeline of the main condensate turbine 4 with the inclusion of regenerative heaters low 5, 6, 7, 8, and high 9, 10, 11 pressures, atmospheric deaerator 12. The drum evaporator 13 is connected by a steam pipe 14 with atmospheric deaerator 12, and a condenser 15 is connected with a vacuum deaerator 16. Vacuum deaerator the 16 is connected by a pipeline of additional feedwater 17 through the pump 18 to the pipe 4 of the main turbine condensate, for example, the second along the main condensate low pressure heater 6.

Thermal power plant works as follows.

Generated in the boiler 1 steam is directed into the turbine 2 and condense in the condenser 3, the main turbine condensate served in regenerative heaters low pressure 5, 6, 7, 8, later in atmospheric deaerator 12, after which the main turbine condensate feed pumps pump through the high pressure heaters 9, 10, 11, and serves in a steam boiler. As an additional heating agent in the atmospheric deaerator 12 to the steam line 14 from the drum evaporator 13 is fed obtained pairs, while received in the drum evaporator 13 condensate is routed to a condenser 15 as a heating agent into the vacuum deaerator 16, and cooked it feed water is supplied to feed pump 18 through the pipe 17 into the pipe main turbine condensate 4, for example, the second along the main condensate low pressure heater 6.

Thus, the proposed solution allows to increase the efficiency of thermal power stations through effective use in the deaeration unit as heating agents streams obtained by the separation in the drum evaporator condensate regenerative heaters high is anyone pressure.

Thermal power plant containing steam turbine included in the feedwater pipeline turbine after deaerator feedwater regenerative high pressure heaters, connected in the heating medium to the regenerative extraction steam turbine, characterized in that the first during regenerative feedwater heater high pressure is connected by a pipeline with the drum evaporator, connected by a couple to the deaerator feedwater, and condensate is connected to the vacuum deaerator incremental feed water.



 

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