Valve, actuator and control system therefor

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

Patent

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Details

F16K 31/12 (2006.01)

Patent

CA 2620348

A valve actuator comprising a lower housing comprising a mounting spool that is operable to couple to a valve body. A rotating sleeve is disposed within the lower housing and coupled to a stem connector. A fixed sleeve in disposed within the lower housing and includes a first slot disposed therethrough. A second slot is disposed in the rotating sleeve, wherein at least one of the slots is a helical slot. An axle engages both the first slot and the second slot. A shaft is coupled to the axle and extends through a connector flange that is coupled to an upper end of the lower housing. A piston is coupled to the shaft and movably disposed within an upper housing that is coupled to the connector flange. Axial movement of the piston within the upper housing will result in rotational movement of the rotating sleeve.

Un actionneur de soupape comprend un boîtier inférieur constitué d'une bobine de montage fonctionnant pour se raccorder à un corps de soupape. Une gaine rotative est disposée à l'intérieur du boîtier inférieur et est couplée à un raccord à tige. Une gaine fixe est disposée à l'intérieur du boîtier inférieur et comprend une première fente insérée à travers. Une deuxième fente est disposée dans la gaine rotative, au moins une des fentes étant une fente hélicoïdale. Un essieu raccorde les première et deuxième fentes. Un arbre est couplé à l'essieu et fait saillie à travers une bride de raccord qui est couplée à l'extrémité supérieure du boîtier inférieur. Un piston est couplé à l'arbre et disposé mobile à l'intérieur d'un boîtier supérieur qui est couplé à la bride de raccord. Un mouvement axial du piston à l'intérieur du boîtier permet d'effectuer un mouvement rotatif de la gaine rotative.

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