COGENERATION GAS TURBINE POWER PLANT Russian patent published in 2021 - IPC F02C6/18 

FIELD: heat power engineering.

SUBSTANCE: invention relates to the field of heat power engineering, can be used in the development of heating gas turbine power plants for a heating plant (GTP-TPP). The cogeneration gas turbine power plant consists of a low pressure compressor (1), a high pressure compressor (2), the first combustion chamber (3), a high pressure gas turbine (4), a low pressure gas turbine (5), an electric generator (6), an air-to-water heat exchanger (7) containing a hot coolant circuit (8) and a cold coolant circuit (9), network pump (10), high pressure gas-water heat exchanger (11) containing its own hot coolant circuit (12) and cold coolant circuit (13), second combustion chamber (14), low pressure gas-water heat exchanger (15) containing its own hot coolant circuit (16) and cold coolant circuit (17). Low pressure compressor outlet (1) is connected to the inlet of the hot circuit of the coolant (8) of the air-to-water heat exchanger (7), the outlet of which is connected to the inlet of the high-pressure compressor (2). The outlet of the high-pressure compressor (2) is connected to the first inlet of the first combustion chamber (3), the second inlet of which is configured to giving natural gas. The outlet of the first combustion chamber (3) is connected to the inlet of the high-pressure gas turbine (4), the outlet of which is connected to the inlet of the hot circuit of the coolant (12) of the high-pressure gas-water heat exchanger (11), the outlet of which is connected to the first inlet of the second combustion chamber (14), the second inlet of which is configured to supply natural gas. The outlet of the second combustion chamber (14) is connected to the inlet of the low pressure gas turbine (5). The outlet of the low pressure gas turbine (5) is connected to the inlet of the hot coolant circuit (16) of the low pressure gas-water heat exchanger (15). The network pump (10) is connected to the inlet of the cold coolant circuit (9) of the air-to-water heat exchanger (7), the outlet of which is connected with the inlet of the cold coolant circuit (13) of the high-pressure gas-water heat exchanger (11), the outlet of which is connected to the inlet of the cold coolant circuit (17) of the low-pressure gas-water heat exchanger (15).

EFFECT: invention makes it possible to increase the annual production of electrical energy and reduce fuel consumption in the joint production of electricity and heat.

1 cl, 2 dwg