| 摘要 |
PROBLEM TO BE SOLVED: To enable an effective cooling, in a state of letting a pressure resisting strength easy by a low pressure cooling air and, with a simple structure, in a gas turbine stator vane. SOLUTION: In a gas turbine stator vane air cooled and vapor cooled, an inner shroud, an outer shroud and a vane part rear edge part having a thin shape are air cooled, a cooling air supplied to an inside of an inner shroud and an inside of an outer shroud is discharged from a cooling air exit hole to a surface side of a vane part and film cools the surface of the vane, a cooling air supplied to a rear edge part of a vane part discharges the cooling air from holes provided on a vane tail side to a combustion gas side, a cooling vapor enters a cooling vapor passage directed inward provided in the vane part from a cooling vapor inlet on a side of the outer shroud, passing a cooling passage turns on the side of the inner shroud, passing an outward cooling passage provided in the vane part and recovered at a cooling vapor exit, therefore the vane part rear edge part, parts other than the inner shroud and the outer shroud are vapor cooled. COPYRIGHT: (C)2007,JPO&INPIT
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