Process and device for restoring the tightness of connector members such as header boxes in generators having mixed water/hydrogen cooling

摘要

The process involves separation of the connecting element (3) from one of the pipes joining it to the circuit, for access to an aperture (6) through which the laser beam (16) can be directed at the oxide layer covering the internal surface (18) of the cavity (19). Particles disengaged by the laser beam are sucked out of the cavity, and a brazed coating is deposited on its internal surface and melted. The laser head (8) is wired (11) to an electronic control cabinet (12) and connected by an optical fibre (10) to a focusing device (9) which is moved through a scanning angle ( alpha ) by a programmed robot (14).