RU2137982C1 - Method for operation of heating boiler house - Google Patents

Abstract

FIELD: heat power engineering. SUBSTANCE: according to method, heating water coming from consumers is directed via return pipeline of heating system back to consumers. Temperature of heating water before hot-water boiler is maintained constant by undertaking recirculation of part of water from supply pipeline to return pipeline of heating system. Leakage of heating water is compensated by make-up water which via make-up pipeline is directed to return pipeline of heating system. Make-up water is treated in vacuum deaerator. For this purpose deaerator is supplied with primary water and heating agent through pipelines of primary water and heating agent, and water recirculation is performed through heating agent pipeline, vacuum deaerator and make-up pipeline. Constant temperature of heating water before hot-water boilers is maintained by regulation of water flow rate in pipeline of heating agent of vacuum deaerator. Combined process of heating water recirculation and treatment of make-up water allows for simplification of boiler house arrangement. EFFECT: higher efficiency. 1 dwg

Description

 The invention relates to the field of power engineering and can be used in heating boiler rooms.

 Known methods of operation of heating boiler rooms are through which the network water from consumers through the return pipe of the heating network is heated in boilers and through the supply pipe of the heating system is sent to consumers, the temperature of the supply water in front of the boiler is kept constant, for which part of the water is recycled from the supply pipe to the reverse (see the book. Ionina A.A. et al. Heat supply. - M .: Stroyizdat, 1982, Fig. 12.6, p. 282), the leakage of network water in the heating network is compensated by make-up water; through the make-up pipeline they are sent to the return pipe of the heating network. This analogue is adopted as a prototype.

 The disadvantages of the prototype are the reduced reliability and efficiency of the boiler room due to the need to implement the method of the complicated boiler room scheme, and also because of the difficulty in ensuring effective deaeration of makeup water.

 The aim of the present invention is to increase the reliability and efficiency of the method of operation of a heating boiler.

 To this end, a method of operating a heating boiler is proposed, in which the network water supplied from consumers through the return pipe of the heating network is heated in boilers and sent to the consumers through the supply pipe of the heating system, the temperature of the supply water in front of the heating boilers is kept constant, for which part of the water is recycled from the supply pipe to the return pipe of the heating system, the leakage of network water in the heating system is compensated by make-up water, which is prepared in a vacuum deaerator, for where the source water and the heating agent are supplied to the deaerator through the source water and heating agent pipelines, and the deaerated water is fed through the make-up pipe to the return pipe of the heating network, and the water is recycled through the heating agent pipe, the vacuum deaerator and make-up pipe, and maintaining a constant temperature of the network water in front of hot water boilers, they are produced by regulating the flow of water in the pipeline of the heating agent of a vacuum deaerator.

 The method consists of the following operations. Mains water coming from consumers through the return pipe of the heating system is heated in boilers and sent to the consumers through the supply pipe of the heating system. The temperature of the supply water in front of the boilers is kept constant, for which part of the water is recycled from the supply pipe to the return pipe. Leaks of network water in the heating system are compensated by make-up water, which is prepared in a vacuum deaerator, for which source water and a heating agent are supplied to the deaerator through the source water and heating agent pipelines, and deaerated water is fed through the make-up pipe to the return network of the heating network. Water recirculation is carried out through a heating agent pipeline, a vacuum deaerator and a make-up pipe, and maintaining a constant temperature of the network water in front of boilers is done by controlling the flow of water in the heating agent pipeline of a vacuum deaerator.

 To explain the method, the drawing shows a fragment of a schematic diagram of a heating boiler, which contains boilers 1 connected between the supply 2 and return 3 pipelines of the heating system. A heating agent pipe 4 is connected to the supply pipe 2, which is connected to a vacuum deaerator 5 through a regulating body 6. Chemical water purifiers 8 and a vacuum deaerator 5 are connected in series to the source water pipe 7. The makeup water tank 10 is connected in series to the deaerated make-up water pipe 9. and a recirculation pump 11. A mains pump 12 is included in the return pipe of the heating network 3. A jumper 13 with a pump 14 is connected between the return 3 and the supply pipe 2 of the heating system.

Consider an example of a specific implementation of the method. The network water coming from consumers through the return network pipe 3 in the amount of 1000 t / h is heated to 150 ^o C in boilers 1 and sent to the consumers through the heating pipe 2. The temperature of the water supplied to consumers is regulated by mixing the return network water through the jumper 13. The temperature of the return network water in front of the hot water boilers is kept constant at 70 ^° C, for which part of the water is recycled from the supply pipe 2 to the return pipe 3. Leaks of the network water in the heating network in 200 t / h are compensated by make-up water, which is prepared in a vacuum deaerator 5, for which source water and a heating agent are supplied to the deaerator, and the deaerated water is sent to the return pipe water 3. Recirculation of network water is carried out through the heating agent pipe 4, vacuum deaerator 5, storage tank 10 and make-up pipe 9. Maintaining a constant temperature of 70 ^o C in front of boilers is done by controlling the flow of water in the heating agent pipe 4 of the vacuum deaerator 5. So at a temperature of return water of 60 ^o C, initial water temperature of 30 ^o C through line 4 and passed deaerator 5 225 t / h of water mains, the deaerated feed water temperature is 94 ^o C (in limestone x methods vacuum deaeration is carried out generally at a temperature of not more than 70 ^o C).

 Due to deaeration at an elevated temperature level, its quality is significantly improved, and the combination of the process of recirculation of network water with the treatment of make-up water in a vacuum deaerator and recharge of the heating system allows us to simplify the boiler room circuit, which increases its reliability and efficiency.

Claims (1)

 The method of operation of the heating boiler, in which the network water from consumers through the return pipe of the heating system is heated in boilers and through the supply pipe of the heating system to consumers, the temperature of the supply water in front of the boiler is kept constant, for which part of the water is recycled from the supply pipe to the return heating pipeline, network water leakage in the heating network is compensated by make-up water, which is sent through a make-up pipe to the return pipe heating network wire, characterized in that the make-up water is prepared in a vacuum deaerator, for which the source water and the heating agent are supplied to the deaerator through the source water and heating agent pipelines, and the water is recycled through the heating agent pipeline, the vacuum deaerator and the make-up pipe, and the constant network water temperatures in front of hot water boilers are produced by regulating the flow of water in the pipeline of the heating agent of the vacuum deaerator.