Fluid flow control device

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

Patent

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Details

F16K 3/24 (2006.01)

Patent

CA 2601074

A fluid flow control device includes a body (16) defining an inlet (18) , an outlet (20) , and a fluid flow path (22) extending from the inlet to the outlet. A valve seat ring (24) is coupled to the body and defines an orifice through which the fluid flow path passes. A cage (30) is also coupled to the body and defines an interior bore, wherein the cage includes at least one passage through which the fluid flow path passes. A throttling element (14) is sized for insertion into the cage interior bore and movable along an axis between open and closed positions. The throttling element defines a sealing surface (52) oriented substantially parallel to the axis. A seal (12) is positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice.

La présente invention concerne un dispositif de contrôle de la circulation des fluides composé d~un boîtier (16) doté d~une entrée (18), d~une sortie (20) et d~un circuit de passage des fluides (22) reliant cette entrée à cette sortie. La bague de siège de soupape (24) est fixée sur le boîtier et délimite l~orifice destiné au circuit de passage des fluides. Un panneau grillagé (30) est également fixé sur le boîtier ; son alésage intérieur inclut au moins un espace réservé au circuit de passage des fluides. Le dispositif d~étranglement (14) est dimensionné de sorte à pouvoir être inséré dans l~alésage intérieur du panneau grillagé et déplacé le long de l~axe situé entre les positions ouverte et fermée. Le dispositif d~étranglement délimite la surface d~étanchéité (52) située parallèlement à cet axe. Le joint (12) est positionné de sorte à entraîner la surface d~étanchéité lorsque le dispositif d~étranglement est en position fermée, réduisant ainsi la circulation des fluides à travers l~orifice de la bague de siège de soupape.

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