RU1815344C - Method of operation of turbines of thermoelectric plant - Google Patents

Abstract

Usage: heat power engineering, mainly in the combined production of heat and electric energy. SUMMARY OF THE INVENTION: The return mains water of a domestic consumer is heated with condensate from a process consumer’s steam, while increasing the production steam parameters, which allows to reduce the heat consumption steam consumption and steam consumption per turbine. At the same time, the turbine maneuverability during operation under variable conditions is increased and economy generation of heat and electricity. 1 ill.

Description

The invention relates to a power system, in particular to turbines of the type of PT CHP, and is aimed at increasing the maneuverability and efficiency of the turbines.

The purpose of the invention is to increase the maneuverability and efficiency of cogeneration turbines ..

The goal is achieved in that the return network water of the domestic consumer is heated with condensate from the steam of the process consumer with a condensate line integrated in the return network of the return water; while reducing the steam flow rate to the turbine head, the steam parameters of the process consumer are increased and the steam flow rate to the mains heater for the domestic consumer is reduced.

The drawing shows an installation for implementing a method of operating turbines of a combined heat and power plant: the installation comprises an energy boiler 1: steam line 2; turbine 3; electric generator 4; capacitor 5; industrial steam extraction 6; cogeneration steam selection 7; gate valves 6, 15, 19, 20; network heater 9; peak boiler 10; supply line network water 11; thermal consumer 12; technological consumer with surface heat exchangers 13; condensate pump 14; condensation line 15; a condensate line built into the return line of the network water 17; return line network water 19; feed water pipe 21; network pump 22; steam selection for regenerative heater 23; regenerative feedwater heater 24.

The energy boiler 1 is connected by a steam line 2 to a turbine 3. The turbine 3 is connected to an electric generator 4 and has a condenser 5. A network, a heater 9 is connected to the turbine 3 by heat extraction 7 through a valve 8. The process consumer 13 is connected to an industrial sampling of steam b, turbines 3. A condensate pump 14 and a valve 19 are installed on the condensate pipe 15. The condensate pipe 17 is built into the return line 18 through the valves 16 and 20. A network pump 22, a network heater, is installed on the return line of the network water 18 (L

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boiler 9, peak hot water boiler 10. A heat consumer 12 is connected to the supply line of network water 11. A regenerative heater 24 is installed on the feed water pipe 21 of the power boiler 1.

The method is implemented as follows.

The electric power unloading of the turbines of the combined heat and power plant at night is carried out by reducing the generation of electricity by industrial steam due to an increase in its pressure within the control of the selection at a constant flow rate and in accordance with the regulation on the temperature regime of technological consumers and a decrease in the flow rate of the heat recovery steam while the heat is released consumer m.

In this case, the steam consumption of the energy boiler 1 to the turbine 3 is reduced, lowering the load of the electric generator 4 and the heat recovery of steam 7 is closed by closing the valve 8 to the network heater 9. The temperature of the network water at the inlet to the peak boiler 10 decreases. To heat the network water to of the required parameters in front of the peak boiler 10 increase the vapor pressure of the industrial extraction, thereby increasing the temperature of saturation of the steam and, consequently, the temperature of the condensate after the process consumer th 13. having surface heat exchangers designed for increased vapor pressure. Hot condensate pump

14 is fed through open valves 16 and 20 into the condensate line 17. integrated in the return mains water line 18, where the mains water is heated, while

gate valve 19 is closed.

The cooled condensate is then sent to the regeneration circuit of the turbine 3 for deaeration and heating in regenerative heaters 24.

When the electric load on the cogeneration plants is restored to the nominal values, the steam pressure of industrial extraction 6 is simultaneously reduced, decreasing the condensate temperature of the process consumers 13 and increasing the consumption of steam of heating extraction 7 to the network heater 9, due to an increase in the steam productivity of the energy boiler 1 and

Claims (1)

steam flow to the turbine 3. At the same time, the valve 19 is opened on the condensate line 15 and the valves 16 and 20 are closed. The claims The method of operation of turbines of a combined heat and power plant, including the generation of electricity with the release of steam and heat for technological and domestic needs, heating the return network water, characterized in order to Increasing maneuverability and efficiency, heating the return network water is carried out by steam condensate of the process consumer, at the same time increasing the parameters of the production steam, reducing the consumption of cogeneration steam and the flow of steam directed to the turbine.