| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration of a local cooling performance of a tail cylinder or a liner and to simultaneously suppress a deviation of an air flow rate to be introduced to a burner by installing a guide vane for suppressing a drift of the air at an inner peripheral side of a tail cylinder flow sleeve. SOLUTION: A high pressure air introduced from an air compressor is introduced from a diffuser into a compartment, fed through a gap between a tail cylinder 4 and a tail cylinder flow sleeve 5 installed on an outer periphery of the cylinder 4, and then passed through a gap between a liner and a liner flow sleeve disposed on a concentric circle of the outer periphery of the liner. In the gas turbine for convection cooling the cylinder 4 by the sleeve 5, one or a plurality of guide vanes 401 for suppressing a deviation of an air flow are installed on an inner surface of the sleeve 5. Then, the height of the vane 401 is desirably 50% or more of an interval between the cylinder 4 and the sleeve 5 at a position where the vane 401 is installed.
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