GAS-TURBINE COMBUSTION CHAMBER AND GAS-TURBINE ENGINE FUEL INJECTOR Russian patent published in 1999 - IPC

FIELD: gas-turbine engineering. SUBSTANCE: gas-turbine combustion chamber has primary, secondary, and tertiary flow-direction combustion zones, secondary mixing channel, and tertiary mixing channel. Cross-sectional area of both these mixing channels is reducing from their inlet devices to outlet ones to ensure high-speed flow through mixing channels so as to prevent occurrence of recirculation regions. Fuel injectors have holes for downstream fuel discharge relative to any recirculation regions that may occur at inlet devices. Fuel injectors are passed through main section of channels so as to efficiently divide channels on at least part of their length. Sections of fuel injectors placed inside channels are shaped in section like race track and those beyond channels are wing- shaped in section. Dimensions of fuel injectors are reducing in crosswise direction through channel width. EFFECT: reduced amount of nitrogen oxides in combustion products. 30 cl, 10 dwg