TURBINE BLADE AND METHOD FOR COOLING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a turbine blade that can reduce the supply pressure of a cooling medium supplied to a blade root and can reduce a seal leakage air volume from a cavity formed at the blade root to improvement the performance of a gas turbine.SOLUTION: In a turbine blade 1, a plurality of first cooling passages 4 project along a blade shaft direction. A first tapered part 15 is formed to be a folding fan toward a blade edge at an end of an outlet side of the first cooling passage 4.