| 摘要 |
PURPOSE:To improve a cooling characteristic at a downstream area of bent flow passage by a method wherein a thin-walled cylinder is fitted to a downstream area of the bent flow passage extending toward the height of blade so as to divide the flow passage into an upper-side flow passage and a lower-side flow passage. CONSTITUTION:Cylinders 35 and 36 are fitted to a part between the partition walls positioned at the downstream of a belt flow passage 22 extending from the root of blade to the extremely end thereof and in turn from the extremely end of the blade to the root of the blade in the main body of the blade, and these parts are divided into upper-side flow passages 31, 32 and lower-side flow passages 33, 34. In this way, a sectional area of the flow passage is reduced, a thermal conductivity is increased to improve a cooling characteristic. |
