| 摘要 |
<p>The invention relates to a descaling device comprising a conveying pipe (7) conveying fluid, particularly a cryogenic fluid, such as liquid nitrogen, supplying one or more fluid distribution nozzles (6) arranged at a free downstream end (5) of said conveying pipe (7), and a drive motor (1) collaborating with the fluid conveying pipe (7) via a transmission mechanism (2, 8, 9). The fluid conveying pipe (7) comprises a fixed portion (7b) situated upstream of an anchor point (10) located on said conveying pipe (7), and a downstream portion (7a) located downstream of the anchor point (10) and comprising the free downstream end (5). The transmission mechanism (2, 8, 9) acts mechanically on said downstream portion (7a) of pipe in order to achieve a determined movement of the downstream end (5) supporting the nozzle or nozzles (6), namely in order to confer upon it an angular deformation in torsion about its longitudinal axis. For preference, the angular deformation is a torsion through an angle of ß of the downstream portion (7a) of pipe, with ß comprised between 1 and 120°, preferably between 30 and 90°. Method for descaling the internal surface of a tube using a cryogenic fluid, in which use is made of a device according to the invention.</p> |
