Fluid saving blowout preventer operator system

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/06 (2006.01) F16K 17/00 (2006.01) F16K 31/122 (2006.01)

Patent

CA 2660540

A hydraulic blowout preventer operator comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bonnet into the operator housing where it is coupled to a piston that is disposed within the operator housing. The piston comprises a body and a flange. A flange seal is disposed on the flange and is sealingly engaged with the operator housing. A body seal is disposed on the body and is sealingly engaged with the operator housing. The flange seal has a sealing diameter greater than a sealing diameter of the body seal.

L'invention concerne un mécanisme hydraulique de commande d'obturateur anti-éruption, comprenant une tige de piston dont une extrémité est couplée à un élément obturateur. Ce mécanisme de commande comprend en outre un logement de mécanisme dont une extrémité est couplée à un capuchon et la seconde extrémité est couplée à une tête. La tige de piston passe à travers le capuchon pour s'avancer dans le logement du mécanisme de commande où il est couplé à un piston installé dans le logement. Le piston comprend un corps et une collerette. Un joint de collerette est placé sur la collerette et est en contact étanche avec le logement du mécanisme de commande. Un joint de corps est placé sur le corps et est en contact étanche avec le logement du mécanisme de commande. Le joint de collerette présente un diamètre de fermeture supérieur au diamètre de fermeture du joint du corps.

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