| 摘要 |
<p>The invention relates to an orbital welding device for mobile use in order to join a first pipe ( 1 ) and a second pipe end ( 2 ) along a circumferential joint ( 3 ) by at least one weld seam ( 4 ), particularly for producing a pipeline ( 5 ) to be placed on land. The inventive device includes a guide ring ( 6 ), which can be oriented toward the first pipe end ( 1 ) and the circumferential joint ( 3 ), and an orbital carriage ( 7 ) that can be motor-displaced along the guide ring ( 6 ) via an advancing device ( 8 ). On the orbital carriage ( 7 ), a laser welding head ( 12 ) for directing a laser beam ( 10 ) into a laser welding zone ( 13 ) is mounted in a manner that enables it to be oriented toward the circumferential joint ( 3 ) whereby enabling the production of the weld seam ( 4 ) along the circumferential joint ( 3 ) by displacing the orbital carriage ( 7 ). The laser beam ( 10 ) is produced by a high-power fiber laser beam source ( 9 ) located, in particular, on a mobile transport vehicle ( 35 ) while being situated at a distance from the orbital carriage ( 7 ), is guided by light guide ( 11 ) passing through a tube bundle ( 50 ) to the orbital carriage ( 7 ) and then supplied to the welding head ( 12 ). A significant advantage of the invention resides in the fact that the joining of two pipe ends by only one single welding process during a short period of time is made possible in the field with autonomous operation.</p> |
