GAS TURBINE WITH REDUCED DISCHARGES AT PARTIAL LOAD Russian patent published in 2015 - IPC F02C6/00 

FIELD: machine building.

SUBSTANCE: method of operation of gas turbine with successive combustion and low discharges of CO discharges means that heated gases from the first combustion chamber enters the first turbine, and heated gases of the second combustion chamber connected to the first turbine enters the second turbine. At that coefficient of air excess of operating injectors of the second combustion chamber is kept below the maximum coefficient of air excess, at that maximum coefficient of air excess depends in temperature at injector inlet and limit CO discharges. To reduce maximum coefficient of air excess some changes of the gas turbine technical solution are made individually or in combination. The gas turbine contains in at least one supply fuel pipeline for at least one injector of the second combustion chamber a separate switching valve or individual control valve. The gas turbine can also contain system of fuel distribution made with the first and second fuel control valves, and with the first and second ring fuel pipelines to distribute fuel to the injectors of the first and second injector assemblies, respectively.

EFFECT: invention ensures the gas turbine operation with low CO discharges.

23 cl, 14 dwg