| 摘要 |
PURPOSE:To reduce the cooling air demand and to improve the gas turbine efficiency by dividing a stator blade into a blade leading edge section and a blade main body which are made of ceramics, and by making the blade body hollow through which cooling air is routed. CONSTITUTION:A stator blade 1 is divided into a leading edge section 3 and a blade main body 2, which are made of ceramics. The blade main body 2 is made hollow, and cooling air passing through the hollow 4 is jetted out of holes 8 which are communicating with both sides of the blade main body 2 and a hole 9 which is communicated with the trailing edge. Since th blade leading edge section 3 is made of ceramics, there is no need to provide a hole for the cooling air jet in the leading edge, and the cooling air demand into the main flow can be reduced, resulting in the improvement in the gas turbine efficiency. |
