| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that the reliability of a burner is deteriorated because the metal temperature of a swirler surface drastically changes due to non-evaporation fuel or soot accumulating on the swirler surface, in a low quality oil fuel burning gas turbine combustor. SOLUTION: The combustor includes a liquid fuel nozzle 20 jetting liquid fuel into a combustion chamber, a spray air nozzle 21 positioned on an outer peripheral side of the liquid fuel nozzle 20 and spraying spray air for atomizing the liquid fuel, and a swirler 17 supplying combustion air from the outer peripheral side of the spray air nozzle 21 to the combustion chamber. A purge air hole 50 for supplying purge air 104 is provided between a spray air hole 21a and a combustion air hole 24a on a swirler surface 18. COPYRIGHT: (C)2011,JPO&INPIT
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