| 摘要 |
A seal in a turbine engine for preventing axial leakage through a radial gap between a stationary structure 404 and a rotating structure 402, wherein the radial gap is defined by an inner radial surface that opposes an outer radial surface across the radial gap, the seal including: a first groove 408 disposed on one of the inner radial surface and the outer radial surface; and a first tooth 407 that projects radially from the other of the inner radial surface and the outer radial surface; wherein the first groove 408, at an upstream end, comprises a gradual slope 410 that slopes away from the surface on which the first tooth 407 is located and, at a downstream end, comprises a steep slope 409; and wherein the first tooth 407 comprises an axial position that is approximately just upstream of the axial position of the upstream end of the groove 408.
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