High-pressure bi-directional valve

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

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F16K 39/02 (2006.01)

Patent

CA 2683393

A control element (160) of a bi-directional valve is in fluid communication with an outlet pressure (200) and an inlet pressure (180) when the valve is closed such that a sum of the forces applied to the control element result in a net force urging the control element to seat against a valve seat (240). The valve includes a valve body (120) carrying the valve seat (240). The control element (160) is balanced on an outlet side of the valve seat such that the outlet pressure applies approximately no net force to the control element. In contrast, the control element is unbalanced on an inlet side of the valve seat such that inlet pressure applies a net force on the control element to bias the control to seat against the valve seat (240).

Un élément de commande (160) d'une soupape bidirectionnelle est en communication fluidique avec une pression de sortie (200) et une pression d'entrée (180) lorsque la soupape est fermée de sorte qu'une somme des forces appliquées à l'élément de commande produise une force nette qui pousse l'élément de commande à s'appuyer contre le siège de soupape (240). La soupape présente un corps de soupape (120) qui comporte le siège de soupape (240). L'élément de commande (160) est compensé sur le côté de sortie du siège de soupape de sorte que la pression de sortie n'exerce quasiment pas de force nette sur l'élément de commande. Toutefois, l'élément de commande n'est pas compensé sur le côté d'entrée du siège de soupape de sorte que la pression d'entrée exerce une force nette sur l'élément de commande pour pousser ce dernier à s'appuyer contre le siège de soupape (240).

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