COOLED BLADE AND GAS TURBINE, AND BLADE COOLING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a cooled blade 11 with the end side sufficiently cooled by improving thermal transfer on blade edge side. SOLUTION: This cooled blade 11 is formed with a rib 15 extending to cross the circulating direction of cooling medium for cooling on an inner wall surface of a passage. A clearance 16 in the absence of the rib 15 is formed on the rear end side of the passage 12. The rear end of the rib 15 is leaned to the rear side in the circulating direction of the cooling medium to cause the cooling medium to generate a flow of second adhesion. The cooling medium is run into an end of the rib 15 from the clearance 16 to generate a flow of cooling medium on a blade end side with a small width and promote the thermal transfer on the blade end side, thus the cooled blade 11 of the end side is cooled sufficiently. COPYRIGHT: (C)2004,JPO