F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
F16J 15/32 (2006.01) F01D 11/00 (2006.01) F16J 15/447 (2006.01)
Patent
CA 2590253
The invention relates to a lamellar seal for sealing a shaft that rotates about an axis, especially in a gas turbine. Said seal comprises a plurality of interspaced lamellae (13; 13a-d) that are disposed in a concentric circle about the axis and are fixed in their position, the faces of said lamellae (13; 13a-d) being substantially parallel to the axis. The aim of the invention is to provide an improved lamellar seal of the aforementioned kind. For this purpose, the lamellae (13; 13a-d) are provided with respective means (27a,b; 28, 29a,b; 30a,b) for positioning and retaining the lamellae (13; 13a-d) in the lamellar seal. Said means are molded to the lamellae and have one or more laterally protruding projections (27a,b; 28, 29a,b; 30a,b).
L'invention concerne un joint lamellaire servant à étanchéifier un arbre tournant autour d'un axe, notamment dans une turbine à gaz. Le joint lamellaire selon l'invention comprend une multitude de lamelles (13 ; 13a-d) espacées les unes des autres, qui sont placées en cercle concentrique autour de l'axe, qui sont fixées dans leur position et dont les surfaces sont orientées pratiquement parallèlement à l'axe. Pour améliorer le joint lamellaire selon l'invention, les lamelles (13 ; 13a-d) présentent respectivement des moyens façonnés (27a,b ; 28, 29a,b ; 30a,b) pour le positionnement et le maintien des lamelles (13 ; 13a-d) dans le joint lamellaire, réalisés sous forme d'un ou de plusieurs éléments (27a,b ; 28, 29a,b ; 30a,b) faisant saillie latéralement.
Hoebel Matthias
Rhodes Nigel Anthony
Summerside Ian James
Alstom Technology Ltd
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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