Patent ID: 7797942
Filing Date: 2010-09-21
Classification: F23R

Abstract:
1. A combustor of a gas turbine including: a pilot nozzle installed at a center of a combustor basket; a plurality of main nozzles installed around the pilot nozzle with each main nozzle provided with pre-mixers on the outer circumference thereof; a plurality of pilot holes formed in the pilot nozzle so as to respectively correspond to each of the main nozzles; first top hat fuel nozzles for supplying the main nozzles with fuel; and second top hat fuel nozzles arranged downstream of the first top hat fuel nozzles, wherein pilot fuel is respectively injected from the pilot holes to the main nozzle to generate a diffusion flame in a transition piece, main fuel is injected into the transition piece as an air fuel mixture, the main fuel is ignited by the diffusion flame in a transition piece to generate a premixed flame in the transition piece.