| 摘要 |
PURPOSE:To aim at unification of the temperature distribution of cooling air by longitudinally partitioning the inside of a combustor casing in a gas turbine, and at the same time, providing a cylindrical body so as to penetrate such partition wall, and then providing a swirler on the air inflow port of the cylindrical body, and on the other hand, providing a water injection nozzle within said cylindrical body. CONSTITUTION:An air cooling device 11 for a gas turbine is composed of a cylindrical body 15, which penetrates a partition wall 14 placed within a combustion chamber 13 in the gas turbine, and by means of the partition wall 14, the combustion chamber 13 is divided into the combustor body side 16 and the combustor tail-pipe side 17. On the air intake port 18, provided on the combustor-body side 16 edge of the cylindrical body 15, is provided a swirler 12, which is provided with a plurality of swirl vanes 23, and then, on the combustor-body side sidewall of the cylindrical body 15 are provided a plurality of water injection nozzles 20 having an appropriate space between each other, and further, on the internal discharge side is provided a demister 21 respectively. In addition, to the nozzles 20, water is supplied by means of a water supply pipe 24 from a pump or the like.
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