SU1747722A1 - Heat supply system - Google Patents

Abstract

Use: in power system to improve the efficiency of heat supply, such as CHP. SUMMARY OF THE INVENTION: The system comprises a closed loop with heat consumers, including heaters connected in a heating medium to the turbine heating tap, and a hot-water boiler, as well as an open loop with heat consumers, including network heaters connected in a heating medium to the heater selection of the turbine and the boiler, as well as an open circuit with heat consumers, including network heaters connected in a heating medium to the heating selection in parallel with the heaters a loop peak heater connected by the heating medium and the selection of production turbines, make-up circuit, which includes the turbine condenser, calciner, and apparatus deaerator demineralizer. The output of the latter is connected to a closed loop. An open loop with its input is connected to a feed circuit between the deaerator and the chemical water treatment apparatus. 1 hp f-ly, 1 silt

Description

The invention relates to a power system and can be used in heat supply systems with combined heat and power plants.

Heat supply systems are known that contain a closed loop with heat consumers, including heaters, connected to a heating outlet to a turbine with a condenser and a production outlet, and a peak hot water boiler, as well as a make-up loop, including a deaerator and chemical water cleaning devices.

A disadvantage of the known systems is the reduced efficiency, due to the significant capital and operating costs associated with the need to build local heaters with heat consumers.

hot water supply. These heaters operate on untreated tap water, which leads to corrosive damage to the heaters and pipelines of local hot water systems and to the increase in the cost of their repair. In addition, the raw water suction pumps in a closed loop through local hot water heaters cause damage to hot water boilers due to corrosion and scale and a corresponding increase in the cost of repair and operation of hot water boilers.

The aim of the invention is to increase the efficiency of the heat supply system.

The goal is achieved by the fact that the system additionally contains an open loop with heat consumers and

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network heaters connected in a heating medium to the turbine heating ports, parallel to the closed loop heaters. In this case, the make-up loop is additionally equipped with a decarbonator and is made in the form of successively placed decarboniser, deaerator and water treatment devices, the output of the latter is connected to the closed loop, the input of the make-up circuit is connected via a turbine condenser, and the open-loop circuit is connected to the supply circuit between the deaerator and the chemical water treatment devices with its input Open-loop and further comprising a peak heater disposed downstream of the heated medium over the network preheater E and connected by a heating medium to the production selection turbine

The drawing shows a schematic diagram of the heat supply system.

The system contains a closed loop with heat consumers - heating devices 1 including heaters 2, connected to the heating medium through heating medium 3 turbines 4 with condenser 5 and 6 V production sampling. The closed loop also includes a peak hot water boiler 7. A feed circuit is connected to the condenser 5 in which installation 8 is sequentially included for reducing the alkalinity and hardness of the feed water according to simplified technology, for example, an acidification unit, as well as a decarbonator 9 and a 10 K vacuum deaerator The make-up circuit behind deaerator 10 is connected to an open circuit of the heat supply system with heaters 11 connected in a heating medium to selections 3 in parallel with heaters m 2, peak network heaters 12 connected in a heating medium to production sampling b, and heat consumers by heating devices 13 and water fitting devices 14. In the area of consumption, an accumulator tank 15 is also connected to an open circuit (in another embodiment of the heat supply system, instead of installing a tank 15, the output from the heating The bins 13 can be connected to the entrance to the heaters 11 by an additional return pipe) The water inlet circuit 16, for example, ion-exchange filters for deep water softening and electron-ion exchange filters for additional oxygen-purification water

The heat supply system works as follows.

The main part of the heat load

heating is covered by a closed loop. For this purpose, the net water is sequentially heated in the preheater 2 and the boiler 7 according to the temperature

0, the heating network is plotted in accordance with the outdoor temperature and is supplied to the consumer by the heaters 1, after which it returns for reheating. The rest of the heat load and the heat load of the hot water supply is covered by an open loop. For this, net water in an amount equal to the average water consumption for hot water supply heats up in heaters 11 and 12 and is supplied to the consumer for heaters 13 and water dispensers 14 The deviation of water consumption for hot water from the average is compensated with the help of a battery tank 15 The feed of the open circuit is carried out with water, which is heated in the condenser 5, processed according to a simplified technology in the installation 8, where the alkalinity of the water is reduced, for example, by acidification, then decarbonization It is in the calciner 9 and is deaerated in a vacuum deaerator 10. A portion of the water after deaerator 10 is used to feed the closed loop, which is further processed in water treatment devices 16, for example. the mind is getting hot and free of oxygen

The use of the invention allows to significantly improve the efficiency of the heating system by eliminating the cost of local hot water heaters, reducing the cost of preparing the make-up water due to the fact that most of the water is prepared

5 simplified technology, reducing the cost of repairing hot water boilers operating on improved water, reducing the diameter of closed loop pipelines due to transfer

0 parts of heating load on open loop

 The scope of the invention 1 A heat supply system comprising a closed loop with heat consumers, including a preheater, connected via a heating circuit to the heating tap of a turbine with a condenser and production bleed, as well as a make-up loop, including a deaerator and water cleaning devices that differ in

that, in order to increase efficiency, it additionally contains an open circuit with heat consumers and network heaters connected in a heating medium to the heating tap of the turbine in parallel with the closed loop heaters, while the feed circuit is additionally equipped with a decarbonator and made in the form consecutively placed decalonating agent, deaerator and chemical water cleaning apparatus, the outlet of the latter is connected to a closed loop, the input

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the make-up circuit is connected via the turbine condenser, and the open circuit is connected to the make-up circuit between the de-aerator and the chemical water treatment devices with its input.

2. The system of claim 1, wherein the open loop further comprises a peak heater placed along the heated medium behind the grid heaters and connected through the heating medium to the production selection of the turbine.

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Claims (2)

Claim 1. A heat supply system comprising a closed circuit with consumers of heat 55 l, including a heater, connected to the heating taps of the turbine with a condenser and production tapping via a heating medium, as well as a make-up circuit, including a deaerator and chemical water treatment devices, characterized in that, in order to increase efficiency, it additionally contains an open circuit with heat consumers and network heaters connected via a heating medium to the turbine heating taps, 5 are closed in parallel with the heaters about the circuit, while the make-up circuit is additionally equipped with a decarbonizer and is made in the form of sequentially placed decarbonizer, deaerator and chemical water purifiers, the output of the latter being connected to a closed circuit, the input of the make-up circuit connected through the turbine condenser, and the open circuit with its input connected to the make-up circuit between do deaerator and chemical water purification devices. 2. The system according to claim 1, characterized in that the open circuit further comprises a peak heater, located along the heating medium behind the network heaters and connected via a heating medium to the production selection of the turbine.