| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustor for a gas turbine capable of uniformly conducting combustion in both of gas burning and oil burning. SOLUTION: An inner cylinder of the combustor is formed into the trumpet shape of which a diameter is gradually increased toward a downstream side. As a low flow rate area is not formed in the trumpet shape, the accumulation of oil can be prevented. Further a film is cooled by the cooling air from a cooling hole having the shape free from a stepped part on which the oil can be attached. A spacer forming the low flow rate area causing the attachment of oil, is not mounted in the cooling hole. The oil near the cooling hole is blown off by the cooling air. In the cooling hole, a part having more heat quantity has more opening ratio. As the quantity of cooling air used in a part of low heat quantity is small, the saved air can be used in combustion. COPYRIGHT: (C)2006,JPO&NCIPI
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