| 摘要 |
PURPOSE:To improve an output, by a method wherein, in a device which guides a part of air, compressed by a compressor, as as cooling air to a turbine impeller, the device is constituted such that water is sprayed directly in cooling air in an air cooling cylinder. CONSTITUTION:Air, compressed by a compressor 2, is guided to a combustor 3 by a gas turbine 1, and high temperature and high pressure gas, generated by the combustor 3, is fes to a turbine 4. In which case, an intermediate support plate 13 for a combustor is mounted in an annular manner to a combustor chamber 10, the interior of a combustor chamber 10 is partitioned into the combustor body side and the combustor tail cylinder 14 side, and a cooling air chamber 30 is formed on the combustor tail cylinder 14 side. An air cooling cylinder 5, extending through the intermediate support plate 13 and being open to the combustor body side and the combustor tail cylinder 14 side in the combustor chamber 10, is installed in the combustor chamber 10. A water spray device 6, connected to a water feed source 9 through an on-off valve 8, is positioned in the cooling cylinder 5. |
