Hydraulic control valve with integrated dual actuators

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

Patent

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Details

F16K 31/00 (2006.01) F01B 21/02 (2006.01)

Patent

CA 2586118

The dual actuator valve of the present invention deploys both the primary and secondary actuator elements in a single, common control chamber. Therefore, the present invention provides a dual actuator valve having dimensions that are the same as, or similar to, the dimensions of a single actuator control valve. It will be appreciated that the actuator elements may be of diaphragm type or piston type actuator elements. The primary actuator element is mechanically linked to the valve plug and regulates the flow though the valve, while the secondary actuator element remains in a fully open position. Should the primary actuator element fail to operate the valve due, for example, to diaphragm rupture, failure of the primary control system, or any other reason, the secondary control system activates the secondary actuator element, which then effects movement of the primary actuator element thereby resuming flow regulation or closure of the valve as necessary.

La vanne à actionneur double selon la présente invention comprend les éléments actionneurs primaire et secondaire dans une unique chambre de commande commune. Cette invention porte par conséquent sur une vanne à actionneur double dont les dimensions sont identiques ou similaires aux dimensions d'une vanne de commande à actionneur unique. Il est préférable que les éléments actionneurs soient du type à diaphragme ou du type à piston. L'élément actionneur primaire est mécaniquement couplé à la clé de robinet et régule le flux traversant la vanne, alors que l'élément actionneur secondaire reste en position complètement ouverte. Si l'élément actionneur primaire ne peut agir sur la vanne du fait, par exemple, de la rupture du diaphragme, de la panne du système de commande primaire ou pour toute autre raison, le système de commande secondaire active l'élément actionneur secondaire, qui effectue le mouvement de l'élément actionneur primaire et reprend la régulation du flux ou assure la fermeture de la vanne, si nécessaire.

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