| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the leakage of cooled air and to use for a long time without requiring replacement parts in a cooling passage for supplying cooled air to a turbine rotor blade through the inside of a rotor of a turbine. <P>SOLUTION: A cover 54 for a cooling passage constituting the cooling passage 5 for supplying cooled air to a final stage-turbine rotor blade through the inside of a disc 35 of the turbine, is provided with a cylindrical covering part 541 to close a cavity 53 in such a manner that a first passage 51 opening from the inside of the disc 35 to the cavity 53 annularly formed in the outer periphery of the disc 35 mutually communicates with a second passage 52 opening from the cooling passage of the final stage-turbine rotor blade to the cavity 53, and a flexible part 542 allowing deflection in the axial direction of the turbine and integrally formed with the covering part 541. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
