A seal assembly

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

Patent

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Details

F16J 15/43 (2006.01) F01D 11/22 (2006.01) F16J 15/34 (2006.01)

Patent

CA 2382478

A seal assembly (10) includes a first seal element (12) defining a first sealing surface (14); displacement means including at least one electromagnet (20) operatively coupled with the first seal element (12), the displacement means being operable to displace the first seal element (12) via the, or each, electromagnet (20); and a second seal element defining a second sealing surface (28) associated with the first sealing surface (14), the first and second seal elements providing a seal. The invention extends to a combination comprising a gas turbine and a seal assembly. The invention further extends to a method of controlling a spacial relationship between respective sealing surfaces of two seal elements.

L'invention concerne un ensemble d'étanchéité (10), comprenant un premier élément d'étanchéité (12) qui définit une première surface d'étanchéité (14; des moyens de déplacement qui comprennent au moins un électro-aimant (20) couplé, de manière fonctionnelle, avec le premier élément d'étanchéité (12), ces moyens de déplacement fonctionnant de façon à déplacer le premier élément d'étanchéité (12) via l'électro-aimant (20), ou via chacun d'eux; un second élément d'étanchéité qui définit une seconde surface d'étanchéité (28) associée à la première surface d'étanchéité (14), les premier et second éléments d'étanchéité formant un joint. L'invention concerne également une turbine à gaz et un ensemble d'étanchéité. Elle concerne enfin un procédé de commande de relation spatiale entre les surfaces d'étanchéité respectives des deux éléments d'étanchéité.

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