摘要 |
PROBLEM TO BE SOLVED: To provide a leaf seal effecting a seal between a stationary side component and a relative rotation side component having an axis of rotation.SOLUTION: A leaf seal 410 defines, in a stationary side component when in use, an upstream side section 429 of a higher pressure and a downstream side section 430 of a lower pressure, which are axially separated from each other. The leaf seal 410 includes a plurality of leaf elements 412 each having: a root end 416 for attachment to the stationary side component; a free end 418 for wiping contact with a rotation side component; an upstream side edge 420 extending from the root end to the free end; and a downstream side edge 422 extending from the root end to the free end. In the leaf element 412, a width between the upstream side edge 420 and downstream side edge 422 at the root end 416 is a, and a width between the upstream side edge 420 and the downstream side edge 422 at the free end 418 is b which is set to be b<0.5a. |