Thermal power station

FIELD: heat power engineering.

SUBSTANCE: proposed thermal power station contains steam turbine with condenser to which cooled and heated circulation water pipelines are connected, and also turbine main condensate pipeline which includes low-pressure regenerative heaters connected to regenerative steam extractions. Heat pump plant evaporator is included into heated circulation water pipeline. Condenser of heat pump plant is connected through heated medium line into main condensate pipeline after first condensate low-pressure regenerative heater in direction of condensate flow in parallel with low-pressure heater of second stage.

EFFECT: improved economy of heat thermal power stations.

1 dwg

 

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

Known counterparts - thermal power station, containing steam turbine with condenser that is connected to the piping chilled and heated circulating water, and the pipeline of the main turbine condensate, which includes regenerative heaters low pressure connected to the regenerative pair selections (see the book Ejaculate "district Heating and heat networks - M.: MPEI Publishing house, 2001, 3.1. b s). This analog adopted as a prototype.

The disadvantage of analogs and prototypes is the low efficiency of thermal power plants due to inefficient use of the heat of the heated circulating water and the presence in the scheme of thermal power stations, special equipment model schema heat recovery circulating water - cooling towers.

The technical result achieved by the present invention is to improve efficiency in thermal power plants by reducing the heat loss of the heated circulating water and improve the efficiency of the regenerative preheating of feedwater flow.

To achieve the technical result of the proposed thermal power plant, tereasa steam turbine with condenser, connected to the piping chilled and heated circulating water, and the pipeline of the main turbine condensate, which includes regenerative heaters low pressure, is connected to a regenerative sampling pair.

The distinction of the proposed thermal power station is that the pipeline is heated circulating water included heat pump evaporator installation, condenser, which is heated environment is included in the pipeline of the main condensate after the first during condensation of the regenerative heater low pressure parallel to the heater low pressure second stage.

Inclusion in the set of essential features that characterize thermal power station, new elements can improve the efficiency of thermal power plants due to more efficient use of the heat of the cooling water leaving the condenser of the turbine.

The drawing shows a diagram of thermal power station.

Information confirming the ability of the invention to provide the above technical result are as follows.

Thermal power plant includes a steam boiler 1 steam turbine 2 to the capacitor 3 connected to the piping chilled 4 and heated 5 CID is elational water, and the pipeline of the main condensate turbine 6, which includes regenerative heaters low 7, 8, 9, 10, and high 11 pressure connected to the regenerative pair selections. The station is equipped with a heat pump installation, consisting of a condenser 12, a throttling device 13, the evaporator 14 and the compressor 15. On the cold side of the heat pump evaporator system 14 is included in the piping hot water circulation 5. In the heated environment, the condenser heat pump system 14 is included in the pipeline of the main condensate after the first 6 in the course of the condensation of the regenerative heater low pressure 7 in parallel with the heater low pressure second stage 8.

Thermal power plant works as follows.

Steam boiler 1 produces steam, which enters the steam turbine 2, where it expands, doing work up to the pressure of the regenerative selections. The exhaust turbine the steam is cooled in the condenser 3 connected to the cooling water pipes 4 and 5. The condensation of the exhaust steam condensate pump 16 is supplied by pipeline main condensate 6 through regenerative heaters low pressure 7, 8, 9, 10 into the tank 17, where nutrient pump 18 is fed through the regenerative system of high pressure heaters 11 in the boiler 1.

Bodog the EB condensate regenerative heaters and heat pump installation.

In the regenerative heaters 7-11 heated condensate is carried out by extraction of the steam turbine 2.

In heat pump installation heat the condensate in the condenser 12 the heat taken away by the evaporator 14 from the heated circulating water from the pipeline 5. In the heated environment, the condenser heat pump installation 12 included in the pipeline of the main condensate after the first 6 in the course of the condensation of the regenerative heater low pressure 7 in parallel with the heater low pressure second stage 8.

Thus, the proposed thermal power plant can improve the efficiency of its work through the effective use of heat of the heated circulating water and the simplification of the circuit of thermal power plants due to the exclusion of special equipment model schema heat recovery circulating water - cooling towers.

1. Thermal power plant containing a steam turbine with condenser that is connected to the piping chilled and heated circulating water, and the pipeline of the main turbine condensate, which includes regenerative heaters low pressure connected to the regenerative extraction steam, characterized in that the pipe is heated circulating water included heat pump evaporator installation, condense the PRS which the heated environment is included in the pipeline of the main condensate after the first during condensation of the regenerative heater low pressure.

2. Thermal power plant according to claim 1, characterized in that the heat pump system is enabled by the heated environment in parallel with the heater low pressure second stage.



 

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