Apparatus for working on a tube portion using a laser beam, and use thereof on pipe tubes on a marine pipe-laying or pipe recovery barge
AssigneeBouygues Offshore
InventorsYves Gainand, Alain Marechal, Jean-Paul Mas
Life of this patent
Estimating the term…
Abstract
The laser apparatus (L, G, T) is placed on a stand (B) which carries the support for the working head (T) of the apparatus in rotary manner, and the apparatus together with its stand are housed in a container (C) through which the tube passes, which container is fixed to the tube while work is taking place, the mass of the container together with that of its contents considerably damping the transmission of stresses from the tube to the working head.
Claims9
An installation for working, on a zone of a wall of a tube by means of a laser beam directed towards said zone, the installation comprising an apparatus which itself comprises a laser beam generator, a working head including both means for focusing the laser beam and an outlet nozzle for the focused beam, a waveguide for guiding the laser beam from the generator to the working head, and a rotary support for moving the working head around an axis, the installation being characterized in that it further comprises both a stand carrying the apparatus and on which the rotary support for the working head is mounted, and a container, the container having openings through which the tube can pass with means for fixing the container temporarily to the tube, the container also containing control and high frequency cabinets for the laser generator, such that the rotary support is fixed to the tube solely via the container whose mass together with the mass of its contents considerably damps the transmission of stresses from the tube to the working head and to the waveguide.
Dependencies are inferred from the claim text.