TUBULAR-RING COMBUSTION CHAMBER WITH STAGED AND TANGENTIAL FUEL-AIR NOZZLES FOR USE IN GAS TURBINE ENGINES Russian patent published in 2017 - IPC F23R3/50 

FIELD: fuel combustion devices.

SUBSTANCE: tubular-ring combustion chamber for gas turbine used in above ground power generation, ground or sea transport vehicles or in aircraft engines, comprises plurality of flame tubes distributed along circumference, enclosed between two cylindrical linings. Each flame tube is flame tube lining, making tubular volume and having located upstream end, containing front wall, and located downstream end, first and second sets of fuel and air nozzles tangentially directed and distributed along circumference. Plurality of dilution holes is made in front wall to direct leaving compressor air into flame tube. First set of tangentially directed and distributed along circumference first nozzles is arranged between located upstream and located downstream ends of flame tube lining for injection of one of components, air or fuel-air into tubular volume. Second set of tangentially directed and distributed along circumference second fuel and air nozzles is arranged between first nozzles and located upstream end of flame tube lining for injection of fuel component into tubular volume between plurality of dilution holes in front wall, located upstream end of flame tube lining and first nozzles.

EFFECT: invention enables optimal fuel and air mixing, as well as creates combustion conditions reducing amount of pollutants emissions, reduces need for expensive emissions control devices, improves ignition and increases flame stability, reduces control problems and reduces vibration.

5 cl, 7 dwg