Optics: measuring and testing – Angle measuring or angular axial alignment – Alignment of axes nominally coaxial
Patent
1989-02-28
1992-02-04
Rosenberger, Richard A.
Optics: measuring and testing
Angle measuring or angular axial alignment
Alignment of axes nominally coaxial
356138, 21912179, G01B 1126, B23K 2602
Patent
active
050855093
ABSTRACT:
The alignment apparatus is intended for repairing welds using infrared radiation and a weldhead (30) inside a heat exchanger tube (14) in the water box (20) of a steam generator associated with a nuclear reactor. A power beam (PE, PL, PS) is transported to the axis (24) of a tube (14) to be treated via two motor-driven light deflectors referred to as an "emitter" (11) fixed adjacent to an access hole into the water box, and as a "receiver" (12) carried by a "carrier" (22) at the entrance to the tube to be treated. The power beam is surrounded coaxially by a visible beam (AE, AL, AS) which is used for establishing and maintaining an optical connection between the emitter and the receiver by means of retroreflectors (15) and an autocollimation mirror (17) carried by the receiver (12) and by detectors (16, 18) carried by the emitter (11).
REFERENCES:
patent: 3844660 (1974-10-01), Hunter
patent: 3892488 (1975-07-01), Edmonds
patent: 4466739 (1984-08-01), Kasner et al.
patent: 4659916 (1987-04-01), Muller et al.
patent: 4668088 (1987-05-01), Quinque et al.
patent: 4772122 (1988-09-01), Rasner
Chabassier Genevieve
Gaffard Jean-Paul
Griffaton Jacques
Ravelet Robert
Framatome
Pham Hoa
Rosenberger Richard A.
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