Magnetically impelled arc butt welding of pipelines

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 13/02 (2006.01) B23K 37/053 (2006.01) F16L 1/024 (2006.01) F16L 1/06 (2006.01) F16L 1/10 (2006.01) F16L 13/00 (2006.01)

Patent

CA 2464605

The present invention is a method and a vehicle-mounted apparatus (30) for laying pipelines in which adjacent pipe (17, 28) are joined by the technique of magnetically impelled arc butt welding (MIAB). A MIAB welding head (13) having a welding axis is mounted on a transportable platform (35). A pipe guide (50) capable of engaging a welded pipe string is located rearwardly of the welding head (45). The pipe guide (50) maintains alignment of the string with the welding axis. The apparatus includes pipe feed means (47, 48, 49) maintaining alignment of a next pipe to be laid with the welding axis and the pipe string (17). The platform (37) is rotatably mounted on the vehicle (30) and tilts around a horizontal axis. The vehicle (300) is provided with pivoting steerable tracks (38).

L'invention concerne un procédé et un dispositif (30) monté sur véhicule pour la pose de canalisations. Selon l'invention, des tuyaux adjacents (17, 28) sont assemblés selon la technique du soudage en bout à l'arc tournant. A cet effet, une tête de soudage (13) pour soudage en bout à l'arc tournant, présentant un axe de soudage, est montée sur une plate-forme transportable (35). Un guide de tuyau (50) apte à engrener un train de tuyaux soudés est placé à l'arrière de la tête de soudage (45). Le guide de tuyau (50) maintient l'alignement du train par rapport à l'axe de soudage. Le dispositif selon l'invention comprend des moyens d'amenée de tuyaux (47, 48, 49) qui maintiennent l'alignement du prochain tuyau à poser par rapport à l'axe de soudage et à la chaîne de tuyaux (17). La plate-forme (37) est montée rotative sur le véhicule (30) et s'incline autour d'un axe horizontal. Le véhicule (300) est équipé de chenilles orientables rotatives (38).

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