An apparatus for pipeline isolation

Details An apparatus for pipeline isolation An apparatus for pipeline isolation

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/128 (2006.01)

Patent

CA 2475585

An apparatus for pipeline isolation comprising a pipeline isolation tool (1) having a cylindrical vessel with locking grips (21) and sealing members (19) encircling the cylindrical vessel. The locking grips (21) and sealing members (19) are operable by a hydraulic piston (10) contained within a core of the cylindrical vessel and a hydraulic pump for operating the piston (10). The piston (10) is a double rodded acting piston (10) comprising an elongated shaft and a head centrally located on the shaft so that the volume swept by the piston (10) is equal in both directions. A control module (32) is connected to the isolation tool (1) at one end and a gauging tool (33) is connected to the other end of the isolation tool (1).

L'invention concerne un appareil d'isolation d'une pipeline, qui comprend un outil d'isolation de pipeline (1) muni d'une cuve cylindrique présentant des poignées de verrouillage (21) et des éléments d'éthanchéité (19) entourant la cuve cylindrique. Les poignées de verrouillage (21) et les éléments d'éthanchéité (19) sont actionnés par un piston hydraulique (10) disposé au coeur de la cuve cylindrique, et par une pompe hydraulique qui commande le piston (10). Le piston (10) est un piston d'actionnement à double tige comprenant un arbre allongé et une tête située au centre de l'arbre, si bien que le volume balayé par le piston (10) est égal dans les deux sens. Un module de commande (32) est raccordé à une extrémité de l'outil d'isolation (1), et un outil de jaugeage (33) est raccordé à l'autre extrémité de l'outil d'isolation (1).

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