Hydrodynamic brush seal

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 11/02 (2006.01) F16J 15/32 (2006.01)

Patent

CA 2675597

A hybrid brush seal is provided for sealing a circumferential gap between two machine components that are relatively rotatable with respect to each other having seal bristles mounted in a ring shape on a first machine component with bristle ends directed at the sealing surface of the second, rotating machine component. The bristle ends are kept from direct contact with the rotating machine component via one or more shoes which create a non-contact seal with the rotating machine component which is enhanced by the imposition of one or more spring elements connected between the machine component and shoes.

L'invention concerne un joint à brosse hybride pour fermer hermétiquement un espace circonférentiel entre deux composants de machine qui peuvent tourner relativement l'un par rapport à l'autre et qui comportent des poils d'étanchéité montés selon un profil annulaire sur un premier composant de machine avec des extrémités de poil dirigées au niveau de la surface d'étanchéité du second composant de machine rotatif. On empêche les extrémités de poil d'être en contact direct avec le composant de machine rotatif par l'intermédiaire d'un ou de plusieurs frotteurs qui créent un joint sans contact avec le composant de machine rotatif qui est amélioré par l'imposition d'un ou plusieurs éléments à ressort raccordés entre le composant de machine et les frotteurs.

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