| 摘要 |
PROBLEM TO BE SOLVED: To provide an auxiliary seal for substantially minimizing or eliminating leakage loss passing through a chord hinge seal. SOLUTION: This gas turbine has a chord hinge seal 46 between an inner rail 52 of a nozzle segment 41 and an annular seal face 54 directed to the axial direction of a nozzle supporting ring 44. An auxiliary seal 70 is arranged between a supporting ring and the inner rail of the nozzle segment on a high pressure side of the chord hinge seal, and includes a pair of thin metallic shims 72, 74 covered with a woven metal cloth 76 supported by a bracket 80. An outer end in the radial direction of the cloth seal is pressed to a back face 88 of the inner rail. Slits 104, 108 are alternately formed to the shims 72, 74 at leg parts of the auxiliary seal in the teeth-like form along the terminal edge of the shims and in the perimeter direction. Therefore, flexibility is given to the shims and the shims can be seal-engaged with the inner rail effectively. COPYRIGHT: (C)2003,JPO
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