SU1495445A1 - Heat-and-power plant - Google Patents

Abstract

EFFECT: higher efficiency. In the period of reducing the load on the power system, additional water from the battery 15 flows through line 18 to the network heater 10 and the peak water-heating boiler 11 and through line 21 to the steam-water heat exchanger, where it is heated by selected turbine steam 2. Then the heated water is supplied to the battery 15. During the peak of the load on the power system, part of the network water after the network preheater 9 enters via pipeline 18 to the accumulator 15, replacing the hot water sent to the mixer 12. The rest of the network water through pipeline 13 enters the mixer 12. Coordinated regulation of the valves 14 and 17 provides the necessary temperature of the network water supplied to the consumer. 1 il.

Description

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The invention relates to the power industry, in particular to combined heat and power plants.

The purpose of the invention is to increase efficiency.

The drawing presents the diagram of the proposed installation.

The installation contains a boiler 1 with a turbine 2 connected to it, a feedwater path in which condenser 3 is installed, low 4 and high 5 preheaters and a drainer 6. The installation contains network 7 main with heat 8 connected to it, low network preheaters 9 and 10 high pressure peak water heater

Bina 2. It is then fed through conduit 21, heated in a steam-heating heater 23, and fed to a hot water accumulator 15. At the same time, valves 19, 24 and 22 are open, and the rest are closed. During peak power supply periods, turbine taps are disconnected to the high-pressure network heater 10, to the peak water-heating boiler 11 and to the steam heater 23, and the released steam is directed to the amplitude of high and medium pressure of the turbine 2. Mains water is heated in a low-pressure network heater 9 and enters the mixer 12 through the pipeline 13 and in

a boiler 11, connected to the withdrawals 15, the accumulator 15 through the pipeline 18 of the cold-turbine 2, as well as the mixer 12, the water turned on. Simultaneously hot water from

now to the mains water mains after the peak water-heating boiler 11 and connected by pipe 13 with the valve 14 to the mains between the mains heaters. The installation also contains a hot water accumulator 15 with a hot water supply pipe 16 from the accumulator that turns on the valve 17 and is connected to the mixer 12. Cold pipe 18

The accumulator is fed to the mixer through line 16. The control of the valves 14 and 17 is mutually agreed to ensure the required temperature of the network water. At the same time, valves 19, 14 and 17 are open, and the rest are closed.

The invention makes it possible to increase the economics by reducing the hydraulic resistance to the movement of network water.

water with a valve 19 and a by-pass line 25 for increasing the heat exchange surfaces with the pump 20 is connected to the line 7heating of water entering the accumulator,

network water between networked heaters — and by generating peak power

l mi 9 and 10.

In addition, the pipeline 21 for supplying hot water to the battery with a valve 22

mainly in high and medium pressure cylinders.

thirty

Claims (2)

Invention Formula connected to the main line behind the peak water-heating boiler 11 and turns on the steam heater 23. The latter is connected to the selection of the turbine for the peak water-heating boiler in an emergency environment. The mains water line comprises a valve 24, which is installed in front of the high-pressure network heater 10. The installation works as follows. In normal operation, steam from boiler 1 is directed to turbine 2, where it expands thirty 35 Invention Formula Heating installation, containing a boiler, a turbine, network heaters of low and high pressure installed in the mains water mains and a peak water-heating boiler, hot water accumulator with cold water pipeline, hot water supply pipe from the accumulator, hot water supply pipeline into the battery and the heater included in the last steam-water heater, is connected by performing useful work. The exhaust to the selection of the turbine for the peak water vapor is condensed in the condenser 3, a gray-water boiler, characterized in that and the condensate is sequentially heated in low 4 and high 5 preheaters. Then the feed water enters the boiler. In this case, the network water, directed to the consumer 8, is successively heated in the network heaters 9 and 10 and the peak water boiler. During the night of the load reduction of the power system, cold water from the accumulator is 45 In order to improve efficiency, it is additionally equipped with a network water mixer, connected to the network’s water main after the peak hot-water boiler and connected at the inlet to the hot water supply pipe from the battery and in addition to the network water between the network heaters same place connected The hot water torus 15 is supplied by pump 20 to the cold water pipeline, and the pipeline to cold water pipeline 18 to the hot water supply to the battery, the network water connection, where the passage together the price to the water main line between the main water main network is heated forged boiler and mixer water network. due to the increased steam extraction from the tour Bina 2. It is then fed through conduit 21, heated in a steam-heating heater 23, and fed to a hot water accumulator 15. At the same time, valves 19, 24 and 22 are open, and the rest are closed. During peak load periods of the power system, turbine sampling is disconnected to the high-pressure network preheater 10, to the peak water-heating boiler 11 and to the steam-heating preheater 23, and the released steam is directed to the amplitude of high and medium pressure of the turbine 2. The network water is heated in the low-pressure network preheater 9 and enters the mixer 12 via conduit 13 and The accumulator is fed to the mixer through line 16. The control of the valves 14 and 17 is mutually agreed to ensure the required temperature of the network water. At the same time, valves 19, 14 and 17 are open, and the rest are closed. The invention makes it possible to increase the economics by reducing the hydraulic resistance to the movement of network water. and by generating peak power mainly in high and medium pressure cylinders. Invention Formula Heating installation, containing a boiler, a turbine, network heaters of low and high pressure installed in the mains water mains and a peak water-heating boiler, hot water accumulator with cold water pipeline, hot water supply pipe from the accumulator, hot water supply pipeline into the accumulator and the heater included in the last steam-water heater connected to the selection of the turbine for a peak hot-water boiler, characterized in that In order to improve efficiency, it is additionally equipped with a network water mixer, connected to the network’s water main after the peak hot-water boiler and connected at the inlet to the hot water supply pipe from the battery and in addition to the network water between the network heaters same place connected the cold water pipeline, and the hot water supply pipe to the battery are connected to the mains water main between