Device for remote inspection of steam generator tubes

Details Device for remote inspection of steam generator tubes Device for remote inspection of steam generator tubes

G - Physics

01

N

G01N 27/72 (2006.01) G01M 99/00 (2011.01) A61B 5/04 (2006.01) E03B 7/07 (2006.01) F22B 37/00 (2006.01) G01N 21/88 (2006.01) G01N 21/954 (2006.01) G01N 27/90 (2006.01)

Patent

CA 2473239

A remote inspection device (1) for the inspection of the tubesheet in-bundle region of a steam generator. The device includes a rail system (9) that is easily and quickly mounted to the end of tube at an in-bundle region of a steam generator, a carriage (10) movable on the rail system (9) for feeding at flexible, tape-like wand (3) into the tube, and a probe (11) mounted on an end of the flexible, tape-like wand (3) for performing the inspection operation. The flexible, tape-like wand (3), which is composed of a flexible metal alloy, has a non-circular center section forming a channel (12) for receiving cabling for the probe (11) and opposed flat, wings (22) on either side of the non- circular center section. Each wing (22) has a row of feed holes (20) positioned remote from the center section that provide engagement with a feed wheel (21) of the carriage.

L'invention concerne un dispositif de contrôle à distance (1) permettant de contrôler la région en faisceaux de plaque tubulaire d'un générateur de vapeur. Le dispositif comprend un système de rail (9) monté facilement et rapidement sur l'extrémité d'un tube dans une région en faisceaux d'un générateur de vapeur, un chariot (10) mobile sur le système de rail (9) permettant de placer une feuille souple de type ruban (3) dans le tube, ainsi qu'une sonde (11) montée sur une extrémité de la feuille souple de type ruban (3), de manière à effectuer l'opération de contrôle. La feuille souple de type ruban (3), conçue dans un alliage de métal souple, présente une section centrale non circulaire formant un canal (12) permettant de recevoir un câblage destiné à la sonde (11) et des ailes plates opposées (22) sur chaque côté de la section centrale non circulaire. Chaque aile (22) comprend une rangée de trous d'alimentation (20) positionnée à une certaine distance de la section centrale et créant un contact avec une roue d'alimentation (21) du chariot.

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