RU2307289C1 - Method of operation of heat supply system - Google Patents

Abstract

FIELD: heat power engineering; heat supply systems.

SUBSTANCE: according to proposed method of operation of heat supply system, system water is delivered to consumers along feed line of heat supply system and is returned by return line of heat supply system, extraction of water for hot water supply is carried out from feed and return lines of heat supply system, temperature of water delivered for hot water supply is maintained constant by mixing system water from feed and return lines of heat supply system in mixing device and circulation of part of water delivered for hot water supply. Circulating water returned from consumers is delivered direct into mixing device. Extraction of system water from return line of heat supply system for hot water supply is regulated by pressure in circulating line of hot water supply system before circulating pump.

EFFECT: improved quality and economy of heat supply system owing to maintaining optimum flow rate of circulating water in hot water supply system and prevention of increase of temperature of return system water.

2 cl, 1 dwg

Description

The invention relates to the field of power engineering and can be used in heat supply systems.

The analogue is known - the method of operation of the heat supply system, in which the network water is supplied to consumers through the supply and taken off through the return pipelines of the heating network, water is taken for hot water supply directly from the supply and return pipelines of the heating network, the temperature of the water supplied to the hot water supply is kept constant by mixing parts of the network water from the supply and return pipelines of the heating system in the mixing device and the circulation of part of the water supplied to the hot water supply (see book Rep N NN Plumbing apparatus buildings. M .: State publishing literature for construction and architecture, 1957 ris.181 (b) str.247, description str.248).

This analogue is adopted as a prototype.

The disadvantages of the analogue and the prototype is the decrease in the quality and reliability of heat supply due to the cessation of hot water circulation during hours of minimal water draw-off when filling the storage tank and the lack of regulation of the selection of water for hot water supply from the return pipe of the heating network.

The technical result achieved by the present invention is to improve the quality and efficiency of the heat supply system by maintaining the optimal flow rate of the circulating water in the hot water supply system and eliminating the increase in temperature of the return network water.

To achieve this result, a method of operation of a heat supply system is proposed, in which network water is supplied to consumers through a supply line and diverted through return pipelines of a heating network, water is taken for hot water supply from a supply and return pipelines of a heating network, and the temperature of the water supplied to hot water supply is kept constant by mixing network water from the supply and return pipelines of the heating system in the mixing device and circulating part of the water supplied to the hot water supply, circus Bleeding water returned from consumers is fed directly to the mixing device.

The difference of the proposed method is that the selection of network water from the return pipe of the heating network for hot water supply is regulated by the pressure in the circulation pipeline of hot water supply in front of the circulation pump.

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 a heat supply system that explains the proposed method.

The heat supply system comprises a feed mixing pipe 1, connected to a supply pipe of a heating network 2, a temperature controller 3, included in the feed mixing pipe 1 in front of the mixing device 4, a supply pipe of a hot water supply system 5, connected to the output of the mixing device 4, a return mixing pipe 6, connected to the return pipe of the heating system 7 and the circulation pipe of the hot water supply system 8, the circulation pump 9 included in the circulation pipe oprovod hot water system 8 between the tapping point inverse mixing conduit 6 and a mixing device 4, hot water supply system feeding regulator 10 included in the back mixing conduit 6. Circulation hot water system pipe 8 is connected to the input of the mixing device 4.

Consider an example implementation of the claimed method.

Network water is supplied to consumers through a supply 2 and diverted through a return 7 pipelines of the heating network. The selection of water for hot water supply is carried out directly from the heating system through the supply 1 and return 6 mixing pipelines. The temperature of the hot water supply is maintained by mixing the network water from the supply 2 and return 7 pipelines of the heating network in the mixing device 4. For this, the temperature regulator 3 controls the flow of network water in the supply mixing pipe 1 depending on the temperature of the water in the supply pipe of the hot water system 5. Consistency water temperatures in the hot water supply system provide circulation of part of the water through the circulation pipe of the hot water supply system 8 connected to the input of the mixing device 4. The water is circulated in the hot water supply system using a circulation pump 9. The supply of network water from the return pipe of the heating network 7 to the inlet of the circulation pump 9 is regulated by the charge control 10 according to the pressure in the hot water circulation pipe 8 before circulation pump 9.

During the hours of minimum withdrawal from the hot water supply system, the temperature of the water in the circulation pipe of the hot water supply system 8 becomes equal to the temperature of the water in the supply pipe of the hot water supply system 5. The water returned from the consumers in full by the circulation pump 9 is supplied to the inlet of the mixing device 4. Moreover, the controller temperature 3 and make-up regulator 10 shut off the supply of network water to the hot water supply from the supply 2 and return 7 pipelines of the heating system. At maximum draw-off hours from the hot water supply system with a decrease in the amount of water in the circulation pipe 8, the water supply from the return pipe of the heating network 7 is regulated by a pressure feed regulator in the circulation pipe 8 in front of the circulation pump 9.

The supply of circulating water of the hot water supply system together with the return network water to the inlet of the mixing device 4 allows to reduce the consumption of network water for hot water supply from the return pipe of the heating network 7.

Claims (1)

The method of operation of the heat supply system, in which the network water is supplied to consumers through the supply and is discharged through the return pipelines of the heating network, water is taken for hot water supply from the supply and return pipelines of the heating network, the temperature of the water supplied to the hot water supply is kept constant by mixing the network water from the supply and return pipelines of the heating system in the mixing device and the circulation of part of the water supplied to the hot water supply, circulating water returned from the consumer lei, fed directly to the mixing device, characterized in that the selection of network water from the return pipe of the heating network for hot water supply is regulated by the pressure in the circulation pipe of hot water supply in front of the circulation pump.