| 摘要 |
A turbine blade (7) comprising a platform (12), a blade body (11) including a cooling flow channel (25-31,41-46) including a meandering serpentine cooling flow channel, a fillet portion (14) defined as a region surrounded by the blade body (11), the platform (12), and a curved surface which is formed in a joint surface between the blade body (11) and the platform (12), and a base portion (13) including a cooling flow channel (33-35) communicated with the cooling flow channel (25-31,41-46) of the blade body (11). The cooling flow channel (25-31,41-46) includes a bypass flow channel (41;42;43;44;45;46) that is branched off from a highpressure part (36) of the cooling flow channel (25-31,41-46), is provided inside of the fillet portion (14) so as to run along the fillet portion (14), and is connected to a low-pressure part (37) of the cooling flow channel (25-31,41-46). |
