COGENERATION GAS-TURBINE POWER PLANT Russian patent published in 2020 - IPC F02C6/18 F01K17/02 

FIELD: heat power engineering.

SUBSTANCE: invention relates to heat engineering, can be used in development of heating gas turbine power plants for heating plant (GTP-HP) and is aimed at increasing thermal efficiency at combined passage of graphs of heat and electric loads. Cogeneration gas-turbine power plant includes compressor 1, combustion chamber 2, high pressure gas turbine 3, low pressure gas turbine 4, electric generator 5, heat exchanger 6 containing hot circuit of heat carrier 7 and cold circuit of heat carrier 8, additional combustion chamber 9, network pump 10, gas-water heat exchanger 11 containing own hot circuit of heat carrier 12 and cold circuit of heat carrier 13. Compressor outlet 1 is connected to first inlet of combustion chamber 2, second inlet of which is configured to feed natural gas. Output of combustion chamber 2 is connected to inlet of high pressure gas turbine 3, outlet of which is connected to input of hot circuit of heat carrier 7 of heat exchanging device 6. Outlet of hot circuit of heat carrier 7 of heat exchange device 6 is connected to the first input of additional combustion chamber 9, the second input of which is configured to supply natural gas. Output of the additional combustion chamber 9 is connected to the inlet of the gas turbine of low pressure 4. Output of low pressure gas turbine 4 is connected to input of hot circuit of heat carrier 12 of gas-water heat exchanger 11. Mains pump 10 is connected to the input of coolant circuit 8 of the heat exchange device 6.

EFFECT: outlet of cold circuit of heat carrier 8 of heat exchange device 6 is connected to inlet of cold circuit of heat carrier 13 of gas-water heat exchanger 11.

1 cl, 2 dwg