| 摘要 |
PURPOSE:To remove cooling fluid without mixing it with main flow gas, by a method wherein a cylindrical injection tube, which extends radially and is coupled to a cooling passage in a blade body, is mounted to the forward end of a cooled blade. CONSTITUTION:A cylindrical injection tube 20, extending radially, is mounted to the forward end of a cooled blade 23. Cooling fluid, fed to a cooling fluid feed port 11 formed in the base part of the blade 23, passes through cooling passages 12 from the interior of a platform 19, and is guided in a gap 22 inside the forward end to be ejected outside the blade through the injection tube 20. The ejected cooling fluid is collected in a collector 15 mounted in the peripheral direction of a turbine casing 18. This enables the cooling fluid to be removed without mixing it with main flow gas. |
