| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the structure of a stationary blade for a gas turbine having high cooling performance. SOLUTION: A stationary blade for a gas turbine has one end being opened and the other end having a closed hollow part 11 extending in the direction of the length of a blade, and is provided with a blade body 10 in which a blow- out passage to intercommunicate a surface and the hollow part 11 is formed. Outside and inside support parts 20 and 30 are arranged at the two end parts of the blade body 10. A cylindrical first core 40, having one end in which an introduction port 42 to introduce cooling air is formed and a side having a plurality of cooling ports 43 to blow out cooling air, and formed in a shape corresponding to the shape of a hollow part 11 is arranged in the hollow part 11 of the blade body 10. A cover plate 60 is arranged in a state to cover the outside support part 20 and a hole in a shape corresponding to that of the first core 40 is formed in the cover plate 60. The end of the introduction port 42 of the first core 40 is inserted in the hole of the cover plate 60 and welded to the cover plate 60, and cooling air is fed directly to the first core 40 from the outside.</p> |
