F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
F16J 15/44 (2006.01) F01D 11/00 (2006.01) F01D 11/02 (2006.01) F16J 15/447 (2006.01)
Patent
CA 2726549
A seal comprises the combination of a pri-mary seal and a secondary seal each, of which acts on at least one shoe (134) that is installed with clearance rela-tive to one of a rotor and a stator in a position to create a non-contact seal therewith. The at least one shoe is pro-vided with a surface geometry and labyrinth-type teeth that influence the inertia of fluid flowing across the seal, and, hence, the velocity of the fluid and the pressure dis-tribution across the seal, ultimately affecting the balance of forces applied to the seal.
L'invention concerne un joint d'étanchéité comportant la combinaison d'un joint d'étanchéité primaire et d'un joint d'étanchéité secondaire, agissant chacun sur au moins un frotteur (134) qui est installé avec un jeu par rapport à un rotor ou un stator en une position permettant de créer un joint d'étanchéité sans contact avec celui-ci. Ledit frotteur présente une géométrie de surface et des dents en labyrinthe qui influencent l'inertie du fluide s'écoulant au travers du joint d'étanchéité et, ainsi, la vitesse du fluide et la distribution de pression au travers du joint d'étanchéité, ceci finissant par affecter l'équilibre des forces exercées sur le joint d'étanchéité.
Equinox
Justak John F.
LandOfFree
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