RU2211928C2 - Method of operation of heat supply system - Google Patents

Abstract

FIELD: heat power engineering. SUBSTANCE: invention can be used at heat power stations. According to proposed method, heating system water is delivered to consumer, said water being heated in heating system heaters of extraction turbine. Losses of heating system water are compensated for by make-up water which is heated and vacuum deaerated prior to delivering into heating system. For this purpose heated water is delivered into vacuum deaerator as heating agent. Heating of water used as heating agent in vacuum deaerator is provided by feed water taken for this purpose after feed water deaerator. EFFECT: improved reliability and economy of heat supply. 2 cl, 1 dwg

Description

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

 Known analogues are the methods of operation of the heat supply system, in which the consumer is supplied with network water, which is heated in the network heaters of a cogeneration turbine, the losses of network water are replenished with make-up water, which is heated and deaerated under vacuum before being fed to the heating network, for which it is supplied as a vacuum deaerator as heating agent direct network water (Sokolov E.Ya. Heat supply and heating networks. - M .: Energoizdat, 1982. Fig. 3.1. (b)). This analogue is adopted as a prototype.

 The disadvantage of the prototype and analogues is the reduced reliability of heat supply due to the lack of stability in the temperature regime of vacuum deaeration. In the warm season, the temperature of direct network water is insufficient to use water as a heating agent for a vacuum deaerator.

 The technical result achieved by the present invention is to increase the reliability and efficiency of heat supply by providing technologically necessary heating of the heating agent of the vacuum deaerator.

 The specified technical result in the implementation of the method is achieved by the fact that in the known method the consumer is supplied with network water, which is heated sequentially in the lower and upper network heaters of a heating turbine, the losses of network water are replenished with make-up water, which is heated and deaerated under vacuum before being fed into the heating network, for whereupon heated water is supplied to the vacuum deaerator as a heating agent.

 The peculiarity lies in the fact that the heating of the water used as a heating agent of the vacuum deaerator is carried out with feedwater, which is taken for this purpose after the feedwater deaerator.

 The operation of heating the heating agent of the vacuum deaerator with feed water, selected after the feed water deaerator, allows to ensure reliability and increase the efficiency of heat supply systems with both large and low feed water consumption.

 The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources, and the identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed to identify the set of essential in relation to the technical result of the distinguishing features in the claimed method set forth in the claims.

 Therefore, the claimed invention meets the condition of "novelty."

 Next, we consider the information confirming the possibility of carrying out the invention with obtaining the desired technical result.

 The drawing shows a schematic diagram of an installation for the preparation of a make-up water of a heating system at a thermal power plant, explaining the method. The installation consists of the bottom 2 and top 3 network heaters included in the network pipe 1 and the chemical water treatment units 4 and the vacuum deaerator 6 included in the make-up water pipeline, the heating agent pipeline of which includes a water-water heater 7 connected via a heating medium to the feed pipe 8 after the deaerator feed water 9. The make-up water pipe 4 is connected to the network water pipe 1 to the lower network heater 2.

In accordance with the proposed method, the return network water is heated from 40-70 to 90-100 ^o C in the lower 2 and upper 3 network heaters. Losses of network water in the heating system are replenished with make-up water, which is softened in the chemical water treatment unit 5 and deaerated in the vacuum deaerator 6, and then fed to the network pipeline 1. The heating agent of the vacuum deaerator is heated in the water-water heater 7 with the feed water taken after the feed water deaerator 9.

 Using the heat of the feed water taken after the feed water deaerator to heat the heating agent of the vacuum deaerator allows you to ensure the reliability and efficiency of heat supply.

 Thus, the above information indicates the industrial applicability of the invention.

Claims (1)

 The method of operation of the heat supply system, in which the consumer is supplied with network water, which is heated in the network heaters of a cogeneration turbine, the losses of network water are replenished with make-up water, which is heated and deaerated in vacuo before being fed to the heating network, for which heated water is supplied to the vacuum deaerator as a heating agent water, characterized in that the heating of the water used as the heating agent of the vacuum deaerator is produced with nutrient water, which is selected for this purpose after deaerator pitate flaxseed water.