Seal assembly for a fluid pressure control device

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

Patent

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Details

F16K 25/04 (2006.01) F16K 1/36 (2006.01)

Patent

CA 2586116

A seal assembly for a fluid pressure control device includes a guide element having a sealing surface and a first guide surface. A throttling element assembly includes a throttling element positionable within a fluid flow path, the assembly defining a mating surface adapted to seal with the guide element sealing surface and a second guide surface sized to slidingly engage the first guide surface of the guide element. A relief void is formed in at least one of the guide element and the throttling element assembly adjacent the first and second guide surfaces to receive loose solid material, thereby to prevent disruption of the seal formed between the sealing surface and the mating surface.

L'invention concerne un ensemble d'étanchéité pour un dispositif de régulation de pression fluidique. Cet ensemble d'étanchéité comprend un élément de guidage comportant une surface d'étanchéité et une première surface de guidage. Cet ensemble d'étanchéité comprend également un ensemble d'étranglement comportant un élément d'étranglement pouvant être positionné dans un circuit d'écoulement, l'ensemble définissant une surface de contact conçue pour venir contre la surface d'étanchéité de l'élément de guidage et une seconde surface de guidage conçue pour entrer en prise de façon coulissante avec la première surface de guidage de l'élément de guidage. L'ensemble d'étanchéité comprend également un espace vide en relief formé dans l'élément de guidage et/ou l'ensemble d'étranglement, à proximité de la première et de la seconde surface de guidage. Cet espace est conçu pour recevoir des matières solides libres et pour ainsi éviter la rupture du joint formé entre la surface d'étanchéité et la surface de contact.

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