Pressure loaded service regulator with pressure balanced trim

G - Physics – 05 – D

Patent

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Details

G05D 16/16 (2006.01) G05D 16/06 (2006.01)

Patent

CA 2722036

A gas regulator includes an actuator, a regulator valve, and pressure loading device. The pressure loading device provides a pressure load to a surface of a diaphragm of the actuator to act against a downstream pressure being applied to the opposite surface of the diaphragm and being controlled by the regulator. As the downstream pressure varies and the diaphragm displaces to move a control element to regulate the downstream pressure, the pressure loading device maintains a specified load pressure. The regulator may further include a balanced trim applying a balancing force to offset a force of an upstream pressure on the control element.

L'invention porte sur un régulateur de pression de gaz qui comprend un actionneur, une soupape de régulateur et un dispositif de chargement sous pression. Le dispositif de chargement sous pression fournit une charge de pression à une surface d'un diagramme de l'actionneur pour agir contre une pression en aval qui est appliquée à la surface opposée du diaphragme et qui est commandée par le régulateur. A mesure que la pression en aval varie et que le diaphragme se déplace pour déplacer un élément de commande pour réguler la pression en aval, le dispositif de chargement sous pression maintient une pression de charge spécifiée. Le régulateur peut en outre comprendre un compensateur équilibré appliquant une force d'équilibrage pour décaler une force d'une pression en amont sur l'élément de commande.

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