Method of operation of thermal power station

FIELD: heat power engineering.

SUBSTANCE: invention is designed for generation of electric energy. According to provided method all return flow of heating system water returned by consumers is heated successively by steam of turbine steam extractions in lower heating system heater, condenser of heat pumping unit and upper heating system heater by heat removed from return heating system water in evaporator of heat pumping unit and then heated water is delivered to consumers.

EFFECT: increased economy of thermal power station.

1 dwg

 

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

Known equivalent ways of working of thermal power stations, for which the entire reverse net flow of water returned from the consumers, successively heated in the condenser heat pump installation heat abstracted from the feedback network of the water in the evaporator heat pump installation, in the lower and upper network heaters steam extraction turbine, and then direct to consumers (see A.S. SU 1239374 A1 F 01 17/02, 23.06.1986). This analog adopted as a prototype.

The disadvantage of analogs and prototypes is the low efficiency of thermal power plants due to the lack of electricity on heat consumption, caused by the displacement in the lower network heater heat obtained from low-grade lower heating selection, the heat received in the heat pump installation with the use of high-grade sources of energy to drive the compressor installation).

The technical result achieved by the present invention is to improve efficiency in thermal power plants by reducing the temperature of the return water network and increase electricity generation at thermal consumption.

For DOS is to achieve the technical result, a method of operating thermal power station, by which all the reverse net flow of water returned from the consumers, is heated in the lower and upper network heaters steam extraction turbine, and condenser heat pump installation heat abstracted from the feedback network of the water in the evaporator heat pump installation, then direct to consumers.

The difference of the proposed method of operating thermal power station is that heating of the entire stream network of the water in the condenser heat pump installation is carried out after the heating network water at the bottom of the network the heater.

New hallmark describing the method of operation of a thermal power station, allows you to increase the profitability of its operation due to the increase of electricity heat steam consumption lower heating selection.

Next, consider the information, confirming the ability of the invention to provide the above technical result.

The drawing shows a schematic diagram of thermal power station, explaining the proposed method.

Thermal power plant contains a back 1 and feed 2 network pipelines, among which included the lower 3 and upper 4 network heaters cogeneration turbine 5. In the return pipe network water 1 front lower seavy the heater 3 included the evaporator 6 heat pump installation, the capacitor 7 which is included in the feedback network of the pipe 1 between the bottom 3 and top 4 network heaters.

Thermal power plant works as follows.

The entire reverse net flow of water returned from the consumers on the return pipe water network 1, is cooled in the evaporator 6 heat pump installation, and then successively heated in the lower network the heater 3, the condenser heat pump installation 7 in the upper network the heater 4, and then direct to consumers through the supply pipe water network 2. In the lower and upper network heaters 3 and 4 mains water is heated by steam cogeneration turbine 5. In heat pump installation heating network water is carried out in the condenser 7 heat taken away by the evaporator 6 from the opposite network of water from the pipeline 1.

Thus, the proposed thermal power plant can improve the efficiency of its work through the effective use of heat reverse circulating water for heating the water in the delivery pipe, the greater loading of the low-potential lower heating turbine selection and increase electricity generation at thermal consumption.

The method of operation of a thermal power station, through which the entire flow back water network, vozvrasheniyu consumers heated steam extraction turbine at the bottom and at the top of the network heaters, as well as in the condenser heat pump installation heat abstracted from the feedback network of the water in the evaporator heat pump installation, then direct to consumers, characterized in that the entire stream network of water successively heated in the lower network heater, condenser heat pump installation and top network the heater.



 

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FIELD: heat power engineering: thermal power stations.

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