Lamellar seal for a turbomachine
AssigneeALSTOM Technology Ltd
InventorsGünter Ambrosy, Matthias Höbel, Ernst Vogt, Josef Hafner
Life of this patent
Estimating the term…
Abstract
A lamellar seal for sealing a shaft which rotates around an axis, especially in a gas turbine, includes a multiplicity of lamella (13) which are spaced one beneath the other, arranged in a concentric circle around the axis, and fixed in their position, wherein the lamellae (13) by their surfaces are oriented essentially parallel to the axis. The lamellar seal is improved by the fact that the lamellae (13) have formed-on structures (19, 20, 21) in each case for positioning and retaining the lamellae (13) in the lamellar seal (12), which include one or more laterally projecting support arms (19, 20, 21) which engage in complementarily formed recesses (25, 26) of the end plates (15, 16).
Claims18
A lamellar seal for sealing a shaft which rotates around an axis, the lamellar seal comprising:
- lamellae which are spaced one beneath the other, arranged in a circle and fixed in position, wherein the lamellae include surfaces oriented essentially parallel to each other and include a fixing region by which the lamellae can be incorporated into a carrier structure by a retainer, the fixing region comprising complementarily formed support arms projecting from each lamella;
- and
- a carrier structure comprising at least two oppositely-disposed end plates including pockets in which the complementarily formed support arms engage in a snug-fitting manner.
Dependencies are inferred from the claim text.