Thermoelectric power station

FIELD: heat-and-power engineering.

SUBSTANCE: thermoelectric power plant intends for warming of heating-system water. Thermoelectric power plant has heating-system water delivery line and return line, steam turbine provided with heating water withdrawal and capacitor. Capacitor is connected with circulation water delivery conduit and rundown pipe; circuit heaters are connected between heating-system water delivery and rundown conduits. The capacitors are connected with heating devices through heating medium. Station also has thermal pump assembly which has evaporator connected to rundown conduit of circulation water. Capacitor of thermal pump assembly is connected to heating-system water delivery line through medium to be warmed behind circuit heaters.

EFFECT: improved economy of thermoelectric power station.

1 dwg

 

The invention relates to the field of power engineering and can be used at thermal power stations.

Known thermal power station - analogues containing feed and return pipe network water, steam turbine with steam extraction steam and a condenser, connected to the pressure and drain the piping circulating water network heaters, enabled by the heated medium between the supply and return piping network of the water and connected by the heating medium to the heating selections, heat pump unit, the evaporator which is connected via the heating medium to the drain pipe of the circulating water (see A.S. SU 1590569 A1, F 01 17/02, 07.09.1990). This analog adopted as a prototype of the invention.

The disadvantage of analogs and prototypes is reduced efficiency of thermal power plants due to the temperature limitation of network water network after heaters, due to the amount of steam in the heating selections, and ineffective utilization of the heat of condensation of the exhaust steam in a loop station.

The technical result achieved by the present invention is to increase the efficiency of thermal power plants by using the heat of the exhaust steam as a source of peak thermal power station.

the La achieve this result, the proposed thermal power plant, containing the supply and return pipe network water, steam turbine with steam extraction steam and a condenser, connected to the pressure and drain the piping circulating water network heaters, enabled by the heated medium between the supply and return piping network of the water and connected by the heating medium to the heating selections, heat pump unit, the evaporator which is connected via the heating medium to the drain pipe of the circulating water.

The difference between the declared thermal power station is the fact that the condenser heat pump installation in a heated environment is included in the supply pipe network water network after heaters.

New hallmark characterizing thermal power station, allows you to increase the profitability of its operation.

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.

Thermal power plant contains cogeneration turbine 1 with a heating selections pair 2 and the condenser 3, the feed 4 and reverse 5 piping network water network pump 6, the heat pump unit 7, the network heaters 8, which is enabled by negrepelisse between inlet 4 and reverse 5 pipelines water network and connected via the heating medium to the heating selections 2. To the condenser 3 turbine 1 is connected pressure 9 and the drain 10 piping circulating water. To the drain pipe 10 circulating water through the heating medium is connected to the evaporator 11 heat pump installation 7, and the capacitor 12 heat pump installation 7 in the heated environment is included in the supply pipe 4 network water network after the heaters 8.

Thermal power plant works as follows.

Mains water is coming from consumers on the return pipe water network 5 using network pump 6 serves in the network heaters 8, which is heated by steam heating selections 2 turbine 1. The exhaust turbine 1 steam is cooled in the condenser 3, which serves it in the pressure pipe 9 and take away through the drain pipe 10 of the circulating water. Heated in a network heaters 8 mains water before supply to the consumers is additionally heated in the condenser 12 heat pump installation 7, as a low-grade source of heat in the evaporator 11 heat pump installation 7 using circulating water from the drain pipe 10.

Thus, the heat of the exhaust steam is used as a source of peak thermal power station. Thanks to the consistent inclusion of the condenser heat pump installation in the supply pipe network water on the Le line heaters and the use of low grade heat, received from the circulating water increases the amount of heat delivered to consumers.

Thermal power station, containing the supply and return pipe network water, steam turbine with steam extraction steam and a condenser, connected to the pressure and drain the piping circulating water network heaters, enabled by the heated medium between the supply and return piping network of the water and connected by the heating medium to the heating selections, heat pump unit, the evaporator which is connected via the heating medium to the drain pipe of the circulating water, characterized in that the condenser heat pump installation in a heated environment is included in the supply pipe network water network after heaters.



 

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