High temperature seal

F - Mech Eng,Light,Heat,Weapons – 16 – J

Patent

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Details

F16J 15/08 (2006.01) F23R 3/00 (2006.01)

Patent

CA 2539948

A seal (1) comprises a first component (7) and second component (9), the first component comprising a first material having a high thermal and oxidation and wear resistance, and the second component (9) comprising a second material that is different from the first material and has a high spring load maintenance. The seal (1) is applied to a combustion chamber for a gas turbine, where the first component (7) extends between the casing wall of the combustion chamber and adjacent liner segments (4). The spring load of the second component (9) provides a seal also in the case of vibrations in a combustion chamber. The lifetime of the seal (1) is increased due to the individual materials, which are optimally chosen for the functions of high thermal and wear resistance and spring load maintenance respectively. The seal is further applied to the sealing between adjacent stationary blade platforms in gas turbines.

L'invention concerne un joint (1) comprenant un premier composant (7) et un second composant (9), le premier composant étant formé d'un premier matériau présentant une haute résistance à la chaleur, à l'oxydation et à l'usure, et le second composant (9) étant formé d'un second matériau différent du premier matériau et présentant une maintenance élevée de la charge du ressort. Le joint (1) est appliqué sur une chambre de combustion de turbine à gaz, le premier composant (7) s'étendant entre la paroi du logement de la chambre de combustion et des segments de revêtement adjacents (4). La charge du ressort du second composant (9) forme également un joint également en cas de vibrations dans la chambre de combustion. La durée de vie du joint (1) est plus longue grâce à des matériaux individuels sélectionnés respectivement de manière optimale pour les fonctions de haute résistance à la chaleur et à l'usure et de maintenance de la charge du ressort. Le joint est également appliqué sur la surface de scellement entre les plateformes à lames fixes des turbines à gaz.

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