CONCENTRIC CONSTANT DILUTION JET FOR BURNER, AND VARIABLE BY-PASS AIR JET

PROBLEM TO BE SOLVED: To provide a concentric constant dilution jet and variable by-pass air jet for a gas turbine engine burner. SOLUTION: At least one jet pipe 33 for supplying a certain amount of compressor discharge air 64 into the burner body 16 is provided, and the jet pipe is arranged between an opening 34 and a casing 20. The collar 60 is arranged at the position of a passage 18 and covers the jet pipe so that the jet pipe penetrates the collar. A gap 78 is arranged between the collar 60 and the jet pipe 33. The collar has a plurality of holes 61. A method of quenching the combustion in the gas turbine comprises a step of supplying a constant amount of compressor discharge air 62 into the body of the burner of the gas turbine, and a step of supplying a variable amount of compressor discharge air 64 into the body 16. The constant amount of compressor discharge air is concentrically arranged around the variable amount of compressor discharge air. COPYRIGHT: (C)2006,JPO&NCIPI