H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/18 (2006.01) G05B 19/402 (2006.01) G05B 19/42 (2006.01) G21C 17/017 (2006.01)
Patent
CA 2084391
"Process and device for the positioning of a tool in relation to the axis of a tube, especially for a steam generator of a nuclear reactor" FRAMATOME ABSTRACT Process for the positioning of a tool (10) carried by a manipulating arm or similar support capable of being displaced in three respectively perpendicular directions of space in relation to a reference axis, especially the vertical axis of a tube carried by a plate, called a tube plate, of a steam generator for a nuclear reactor. According to the invention, this process involves arranging symmetrically on this arm a set of at least three lighting sources (17) each supplying a light beam directed tangentially towards the periphery of a tube (5), retransmitting, by means of an optical assembly (18) likewise carried by the arm, the images of three specific points of the tube illuminated by the sources in the direction of a video monitor, the screen (21) of which comprises three reticles (42, 43, 44) delimiting the actual contour of this tube, and then bringing these images into coincidence with the reticles in order to centre the axis (28) of the tools strictly on the axis (35) of said tube. The invention also relates to a device for carrying out this process. (Figure 1)
Framatome
Goudreau Gage Dubuc
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