Patent ID: 7040097
Filing Date: 2006-05-09
Classification: F01D,F05D

Abstract:
1. A gas turbine comprising: at least one combustion chamber, an enclosed inner liner which surrounds the combustion chamber, and an enclosed outer liner; a stator having at least one vane row with a plurality of vanes; a rotor having at least one blade row with a plurality of blades; an air cooling arrangement configured and arranged to cool parts of the gas turbine with air; and a steam cooling arrangement configured and arranged to cool parts of the gas turbine by steam, simultaneously with said air cooling arrangement; wherein the vanes comprise hub-side cover elements, and the steam cooling arrangement is configured and arranged at least for cooling the enclosed inner liner, the enclosed outer liner, the vanes, the hub-side cover elements of the vanes, or combinations thereof; further comprising a steam guide configured and arranged at the downstream end of said enclosed inner liner so that a steam film is produced downstream of the vane row, along a rotor lateral surface; or both.