| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas turbine combustor equipped with a fuel nozzle and a fuel nozzle header forming a coaxial jet of fuel and air wherein thermal stress generated in the fuel nozzle header is restrained and the service life is elongated. SOLUTION: The gas turbine combustor is formed so that a fuel jet injected from the plurality of fuel nozzles in the fuel nozzle header and an air jet injected from a plurality of air holes of an air hole plate are in the form of the coaxial jet. A mounting hole 40 for arranging the fuel nozzle 31 in the fuel nozzle header 30 is provided, a space part of an air layer 42 or a hollow cylindrical heat insulating layer 44 is arranged between an outer peripheral side of the fuel nozzle and an inner peripheral side of the mounting hole in the inside of the mounting hole of the fuel nozzle header, a fitting means fitted with the mounting hole of the fuel nozzle header or an end face of the fuel nozzle header opening the mounting hole is arranged on a rear end of the fuel nozzle, and the fuel nozzle is fixed to the fuel nozzle header. COPYRIGHT: (C)2009,JPO&INPIT
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