| 摘要 |
PROBLEM TO BE SOLVED: To provide a movable blade for a high pressure turbine to give a new shape not to cause cracking on a cooling air exhaust groove nearest to a base end part of the blade. SOLUTION: This movable blade for the high pressure turbine of a turbo machine has at least one cooling circuit, the cooling circuit is furnished with at least one cavity 24 extending in the diametrical direction between a head end part 16 of the blade 10 and a base end part 14, at least one air suction port provided on one end part in the diametrical direction of the cavity and to supply cooling air to the cooling circuit and a plurality of grooves 26 to open toward a rear edge 20 of the blade from the cavity, the groove is arranged along the rear edge between the base end part and the head end part of the blade so as to be roughly vertical against a longitudinal axis X-X of the blade, and the groove 28 nearest to the base end part of the blade is inclined toward the head end part of the blade by making an angle of 10 degrees to 30 degrees against an axis of rotation of the blade. COPYRIGHT: (C)2003,JPO
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