F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 31/122 (2006.01)
Patent
CA 2191767
An actuator (10) for fluid control valves with a reversible power module having a stationary inner member (24) and a coaxially aligned movable outer member (26) coupled to the valve flow control element and slidably movable on the inner member (24). A chamber (36) is formed between respective ends of the members (24, 26). Pneumatic pressure applied to the chamber drives the movable member (26) to actuate the valve (14) in a first direction. A spring (62) returns the movable member (26) in the second direction. A second chamber (48) is defined within the inner member and pneumatic pressure applied to the second chamber (48) drives the movable member (26) with or without the spring (62).
La présente invention concerne un actionneur (10) de soupapes débitmétriques muni d'un module moteur réversible constitué d'un élément interne fixe (24) et, dans son alignement coaxial, d'un élément externe mobile (26). Ce dernier, couplé à l'organe de commande débit métrique de la soupape, se déplace en coulissant par rapport à l'élément interne (24). Les extrémités respectives des éléments (24, 26) constituent une chambre (36) entre elles. La pression pneumatique exercée dans la chambre amène l'élément mobile (26) à actionner la soupape (14) dans un premier sens. Un ressort (62) renvoie l'élément mobile (26) dans un second sens. L'application d'une pression pneumatique à la seconde chambre (48), constituée par l'intérieur de l'élément, déplace l'élément mobile (26) avec ou sans le ressort (62).
Fisher Controls International Inc.
Fisher Controls International Llc
Ridout & Maybee Llp
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