F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 41/02 (2006.01)
Patent
CA 2661736
A valve packing assembly for a control valve includes a seal assembly, a loading assembly, and a packing retainer. The seal assembly has a seal component to provide a fluid seal around a valve stem and an anti-extrusion component to substantially prevent extrusion of the seal component about the valve stem. The loading assembly is configured to advantageously provide a predetermined packing stress to the seal assembly that is in the same direction as a process stress applied to the seal assembly by a process fluid, thereby substantially reducing packing friction and packing wear in the control valve assembly.
L'invention concerne un ensemble de conditionnement de vanne pour vanne de commande. Ledit ensemble comporte un ensemble formant joint d'étanchéité, un ensemble formant chargement, et un dispositif de retenue de conditionnement. L'ensemble formant joint d'étanchéité inclue un composant d'étanchéification pour fournir un joint étanche au fluide autour d'une tige de vanne, et un composant anti-extrusion pour sensiblement prévenir l'extrusion du composant d'étanchéification autour de la tige de vanne. L'ensemble formant chargement est conçu pour fournir, de manière avantageuse, une contrainte de conditionnement prédéterminée sur l'ensemble formant joint d'étanchéité, ladite contrainte étant dans la même direction qu'une contrainte de traitement appliquée à l'ensemble formant joint d'étanchéité par un fluide de traitement, réduisant ainsi sensiblement le frottement et l'usure de conditionnement dans l'ensemble formant vanne de commande.
Grabau Ted Dennis
Lovell Michel Ken
Fisher Controls International Llc
Ridout & Maybee Llp
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