G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 3/28 (2006.01) G01N 7/00 (2006.01)
Patent
CA 2558494
A pipe testing apparatus (10) includes a mandrel (24) adapted for insertion within the pipe (32) and two sealing devices (26), (50) connected to the mandrel and adapted to seal opposite ends of the pipe to create an annular space between the mandrel, the pipe, and the sealing devices. The mandrel is designed to have a length longer than the length of the pipe, therefore, beyond the first and second openings of the pipe. The apparatus further includes one or more ports (80) for filling the annular space. At least one of the sealing devices includes a combination of a sealing ring and a force applying ring (56), which forces the sealing ring to bear against one end of the pipe to from a seal. The mandrel is provided with stops (68) for preventing the at least one sealing device from moving axially away from the pipe.
L'invention porte sur un appareil de vérification (10) de la longueur de tuyaux comportant un mandrin (24) s'insérant dans le tuyau (32) et deux dispositifs d'étanchéité (26, 50) liés au mandrin et obturant les deux extrémités du tuyau de manière à créer un espace annulaire entre le mandrin, le tuyau et les dispositifs d'étanchéité. La longueur du mandrin dépasse celle du tuyau et se prolonge au delà de la première et de la deuxième ouverture du tuyau. L'appareil comporte en outre un ou plusieurs orifices (80) servant au remplissage de l'espace annulaire. L'un au moins des dispositifs d'étanchéité comporte une combinaison d'un anneau d'étanchéité et d'un anneau (56) d'application de force qui contraint l'anneau d'étanchéité à porter sur une extrémité du tuyau pour former un joint étanche. Le mandrin est muni de butées (68) empêchant le ou les dispositifs d'étanchéité de s'écarter axialement du tuyau.
Blake Cassels & Graydon Llp
Car-Ber Investments Inc.
LandOfFree
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