Thermal power plant

 

The invention relates to the field of engineering and is intended for use in thermal power plants. Thermal power station, comprises a steam turbine with condenser, which is connected by pipeline to the main turbine condensate with the inclusion of regenerative heaters low pressure to high pressure deaerator, vacuum deaerator incremental feed water to the piping of a heating agent and source of water, water-water heater included in the pipeline of the source water, the lower and upper network heaters, connected in the heating medium to the lower and upper heating selections turbine. Water-water heater for the heating medium is connected to the upper pipeline network of the heater. The pipeline is cooled condensate to the upper network of the heater after water-to-water heater connected to the main pipeline condensate after the first during the main condensate heater low pressure. The pipeline deaerated additional feedwater connected to the pipeline of the main turbine condensate after the second along the main turbine condensate heater low pressure. the ss="ptx">

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

Known counterparts - thermal power station, containing steam turbine with condenser, which is connected by pipeline to the main turbine condensate with the inclusion of regenerative heaters low pressure to high pressure deaerator, vacuum deaerator additional feedwater pipelines source of water and a heating agent, a water-water heater included in the pipeline of the source water, the lower and upper network heaters, connected in the heating medium to the lower and upper heating selections turbine. Network heaters included in the pipeline deaerated additional feedwater. The heated pipeline of additional feedwater after the upper network of the heater is connected with a vacuum deaerator and source water heater (see and.with. No. 1521889, 1989, BI No. 42). This analog adopted as a prototype.

Disadvantages analogs and prototypes are reduced efficiency and reliability of thermal power plants due to the inability to use this scheme at low cost dobavok, achieved by the present invention is to increase the efficiency and reliability of thermal power plants.

To achieve this result, the proposed thermal power plant containing a steam turbine with condenser, which is connected by pipeline to the main turbine condensate with the inclusion of regenerative heaters low pressure to high pressure deaerator, vacuum deaerator additional feedwater pipelines source of water and a heating agent, a water-water heater included in the pipeline of the source water, the lower and upper network heaters, connected in the heating medium to the lower and upper heating selections turbine.

The peculiarity lies in the fact that water-water heater for the heating medium is connected to the upper pipeline network of the heater. The pipeline is cooled condensate to the upper network of the heater after water-to-water heater connected to the pipeline of the main turbine condensate after the first during main turbine condensate heater low pressure. The pipeline system feed incremental feed water connected to the main pipeline congeniality elements can increase the reliability and efficiency of thermal power plants due to the heat source water water water heater to settings, sufficient for effective vacuum deaeration, and use as a heating medium in pressurised water heater source water and steam condensate low potential upper heating selection.

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 containing steam turbine 1 with a capacitor, which is connected by pipeline to the main condensate turbine 2 with the inclusion of regenerative heaters low pressure 3, 4, 5, 6 to the high pressure deaerator, vacuum deaerator additional feedwater 7 pipelines water source 8 and the heating agent 9, the bottom 10 and top 11 network heaters, connected in the heating medium to the lower and upper heating selections turbine, respectively, water-water heater 12, included in the pipeline of the source water before the desalting installation 13 and is connected via the heating medium to the condenser 14, the top network of the heater. The pipeline is cooled condensate 15 after the heater 12 is connected to the pipe 2 main turbine condensate pool incremental feed water 16 is connected to the pipeline of the main turbine condensate after the second along the main turbine condensate heater low pressure 4.

Thermal power plant works as follows.

Spent in the steam turbine 1 steam condense in the condenser, after which the main turbine condensate successively heated in the regenerative heaters low pressure 3, 4, 5, 6. Leakage of feed water from the steam cycle thermal power station compensate for incremental feed water, which dearyou in vacuum deaerator 7. In the vacuum tank 7 through the pipe 9 serves a heating agent, and the pipe 8 to the source water, preheated in water-the water heater 12 and desalted in the desalting installation 13. The pipe 14 in a pressurised water source water heater 12 serves condensate upper network of the heater. The cooled condensate pipeline 15 is served in the main pipeline condensate turbine 2 after the first during main turbine condensate heater low pressure 3. Deaerated incremental feed water through the pipeline 16 is served in the main pipeline condensate 2 after the second along the main condensate turbine of the low pressure heater 4. Next, the main condensate with incremental feed water dearyou in the deaerator is so the proposed solution enables an efficient vacuum deaeration additional feedwater using as a heating medium in a pressurised water source water heater low-grade heating selections, i.e., to increase the reliability and efficiency of thermal power station.

Claims

1. Thermal power plant containing a steam turbine with condenser, which is connected by pipeline to the main turbine condensate with the included regenerative heaters low pressure to high pressure deaerator, vacuum deaerator incremental feed water to the piping of a heating agent and source of water, water-water heater included in the pipeline of the source water, the lower and upper network heaters, connected in the heating medium to the lower and upper heating selections turbine, characterized in that the water-water heater for the heating medium is connected to the upper pipeline network of the heater.

2. Thermal power plant under item 1, characterized in that the pipeline is cooled condensate to the upper network of the heater after water-to-water aggravates low pressure.

3. Thermal power plant under item 1, characterized in that the pipeline deaerated additional feedwater connected to the pipeline of the main turbine condensate after the second along the main turbine condensate heater low pressure.

 

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