The method of operation of the heating system

 

The invention relates to the field of power engineering and can be used in thermal power plants. The method of operation of the heating system, by which the customer is served mains water, which is heated in the network heaters extraction turbine. Peak heat load on the water network to cover peak in the source of heat. Loss of network water supply make-up water, which before serving in heat network heat and dearyou under vacuum in a vacuum deaerator serves as a heating agent network water. Peak heat loads on the network water using a heat exchanger included in the heating medium in the flue gas leaving the steam boiler and mains water, which is used as a heating agent of the vacuum deaerator, taken after the specified heat exchanger. The invention allows to provide reliability and to increase the efficiency of heating systems. 1 Il.

The invention relates to the field of power engineering and can be used in installations for the preparation of make-up water heating systems.

Known equivalent ways of working of the heating system, which potterlove load on the network water cover during the peak hot water boiler, loss of network water supply make-up water, which before serving in heat network heat and dearyou under vacuum in a vacuum deaerator serves as a heating agent heated water (Sokolov E. I. district Heating and heat networks. -M.: Energoizdat, 1982. Fig. 3.1. (b)). This analog adopted as a prototype.

The disadvantage of the prototype and its analogues are reduced efficiency due to the need of the cost of fuel for the operation of peak-load boiler and reduced reliability due to inefficient water deaeration due to the failure to ensure the stability of the temperature regime vacuum deaeration. In the warm season temperature direct network of water insufficient for use of this water as a heating agent of the vacuum deaerator.

The technical result achieved by the present invention is to increase reliability and efficiency of heat supply.

This technical result in the implementation of the method is achieved in that in the known method the consumer network serves water, which is heated in the network heaters turbine cogeneration, peak heat loads on the water network to cover peak source of heat loss network in which the vacuum deaerator serves as a heating agent to the heated water.

The peculiarity lies in the fact that the peak heat loads on the network water using a heat exchanger included in the heating medium in the flue gas leaving the steam boiler and mains water, which is used as a heating agent of the vacuum deaerator, taken after the specified heat exchanger.

The operation of the peak heat loads on the network water warm flue gas steam boiler in a heat exchanger, which is enabled by the heating medium in the flue gas leaving the steam boiler, and the operation of heating water used as a heating agent of the vacuum deaerator, in this heat exchanger in the presence of the peak heat loads on the water network ensures the reliability and increase the efficiency of heating systems with both large and small flow rate of feed water.

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical sources, and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant had not discovered similar, characterized by signs, identical with all the essential features of the claimed invention. The definition of p is allowed to identify a set of essential towards the technical result of the distinctive features in the proposed method, set forth in the claims.

Therefore, the claimed invention meets the condition of “novelty.”

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 the setup for training in thermal power plant make-up water heating system, full way. The installation consists of included in the network pipeline 1 bottom 2 and top 3 line heaters, heat exchanger 4, which is enabled by the heating medium in the flue gas leaving the steam boiler 5, and is included in the piping make-up water 6 node 7 and applied vacuum deaerator 8, pipeline heating agent which is included in the network pipe 1 after the heat exchanger 4.

In accordance with the proposed method reverse mains water is heated to 40-700With up to 90-1000With the bottom 2 and top 3 online heaters. Peak heat loads on the water network using the heat exchanger 4, which is enabled by the heating medium in the flue gas leaving the steam boiler 5. Loss of circulating water in heat supply make-up water, which magchat node chingados the th as a heating agent of the vacuum deaerator 8, produced in the heat exchanger 4.

Using heat of exhaust gases of a steam boiler to cover peak heat loads on the water network and water heating, is used as the heating agent of the vacuum deaerator, helps to ensure the reliability and efficiency of heat supply.

Thus, the presented data suggest industrial applicability of the invention and achieving the desired technical result.

Claims

The method of operation of the heating system, by which the customer is served mains water, which is heated in the network heaters turbine cogeneration, peak heat loads on the water network to cover peak in the source of heat, loss of network water supply make-up water, which before serving in heat network heat and dearyou under vacuum in a vacuum deaerator serves as a heating agent network water, characterized in that the peak heat loads on the network water using a heat exchanger included in the heating medium in the flue gas leaving the steam boiler and mains water, which is used as a heating agent of the vacuum deaerator, select

 

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FIELD: thermal engineering; thermal power stations.

SUBSTANCE: proposed operating process of thermal power station is as follows. Boiler-generated steam is conveyed to turbine wherefrom it is supplied to condenser for condensing it; full-flow condensate is delivered by means of condensate pump to low-pressure regenerative heaters and then to high-pressure deaerator; makeup water is deaerated in atmospheric-pressure deaerator and conveyed to full-flow condensate path, vented steam being discharged from atmospheric-pressure deaerator into atmosphere. Flowrate of vented steam discharged from atmospheric-pressure deaerator is regulated with respect to desired content of oxygen dissolved in mixed flow of makeup water and full-flow condensate beyond vacuum system of turbine unit, for instance downstream of low-pressure heater second along full-flow-condensate path.

EFFECT: enhanced economic efficiency and operating reliability of thermal power station.

1 cl, 1 dwg

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