Method and apparatus for end-to-end welding of lined pipe

Details Method and apparatus for end-to-end welding of lined pipe Method and apparatus for end-to-end welding of lined pipe

B - Operations, Transporting

29

C

B29C 65/00 (2006.01) B23K 37/06 (2006.01)

Patent

CA 2407748

A weld shield device for facilitating end-to-end welding of two pipe segments having fiberglass liners. The weld shield device includes an insulation material applied about the outer surface of a sleeve body. The sleeve body helps establish a welding gap between the two pipe segments. The insulation material reduces the heat transfer from the welding operations to the fiberglass liners. Additionally, a method of joining two pipe segments with fiberglass liners is provided, which includes connecting a first end of a weld shield device to a first pipe segment and connecting a second pipe segment to the second end of the weld shield device with the weld shield device being partially in a cutout portion of the fiberglass liner. Then, the two pipe segments are welded together. Insulation material on the weld shield device reduces the heat transfer from the welding operations to the fiberglass liners.

La présente invention concerne un dispositif de protection de soudure permettant de faciliter le soudage bout à bout de deux segments de tuyaux possédant des chemises en fibre de verre. Le dispositif de protection de soudure comprend une matière isolante appliquée sur la surface d'un corps de manchon d'accouplement. Le corps de manchon d'accouplement aide à établir une rainure de soudage entre les deux segments de tuyaux. La matière isolante réduit le transfert de chaleur issu des opérations de soudage vers les chemises en fibre de verre. De plus, l'invention concerne un procédé permettant de joindre deux segments de tuyaux à l'aide de chemises en fibre de verre, consistant à connecter une première extrémité d'un dispositif de protection de soudure à un premier segment de tuyau et à connecter un second segment de tuyau à la seconde extrémité du dispositif de protection de soudure, ce dernier étant partiellement disposé sur une partie de découpe de la chemise en fibre de verre. On soude ensuite les deux segments de tuyaux. La matière isolante présente sur le dispositif de bouclier de soudure réduit le transfert de chaleur issu des opérations de soudage vers les chemises en fibre de verre.

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