Title:
【発明の名称】導管の内壁のレーザ溶接装置及び方法
Document Type and Number:
Japanese Patent JP3097936
Kind Code:
B2
Abstract:
Both a system (1) and method for laser welding the inner walls of conduits (21,22), such as the sleeves (21) used to repair the heat exchanger tubes (22) of nuclear steam generators (23). The system (1) generally comprises an elongated tubular housing (3), a fibre-optic cable (13) for conducting remotely generated laser light into the tubular housing (3), a beam deflection mechanism (5) supported within the distal end (38) of the tubular housing (3) and including a rotating mirror (62) for radially reflecting and focusing light received from the fiber-optic cable (13) around the inner wall of the sleeve (21), and a tracking assembly (5) mounted on the distal end (38) of the tubular housing (3) for maintaining a constant radial distance between the mirror (62) of the beam deflection mechanism (5) and the inner wall of the sleeve (21) despite any irregularities which may be present in the roundness of the sleeve (21). To ensure reliable rotation of movement, an electric motor (122) and gear train (124,126) is mounted in the proximal end of the tubular housing (3).
Inventors:
Gerhard Menzel
Charles Harvey Ross Jr.
Edward Henry Smith
Rodney Alan Lutz
John Jay Anderson
Charles Harvey Ross Jr.
Edward Henry Smith
Rodney Alan Lutz
John Jay Anderson
Application Number:
JP15583692A
Publication Date:
October 10, 2000
Filing Date:
May 22, 1992
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORPORATION
International Classes:
B23K26/00; B23K26/04; B23K26/06; B23K26/08; B23K26/20; B23K26/28; B23K37/02; G21D1/00; (IPC1-7): B23K26/00; B23K26/04; B23K26/06; B23K26/08
Domestic Patent References:
| JP2200387A |
Attorney, Agent or Firm:
Koichiro Kato (2 outside)