Boiler tube inspection probe with centering mechanism and...

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 55/44 (2006.01) G01M 99/00 (2011.01) G01N 29/24 (2006.01) G01N 29/28 (2006.01)

Patent

CA 2685294

A centering apparatus for internal nondestructive testing of a tube to be inspected includes an elongated shaft member (102) coupled to an inspection probe (104); a plurality of fingers (106), pivotally attached at a first end thereof to a mounting surface affixed to the shaft member (102), the plurality of fingers (106) circumferentially surrounding the shaft member (102); and an expansion mechanism, disposed between the plurality of fingers and the shaft member, the expansion mechanism (118) config-ured to selectively and outwardly extend a second end of the plurality of fingers (106) with respect to a longitudinal axis of the shaft member (102), so as to bring the second end of the plurality of fingers (106) into contact with an inner surface of the tube to be inspected, thereby centering the inspection probe (104) within the tube.

L'invention concerne un appareil de centrage pour un test non destructeur interne d'un tube devant être inspecté, comprenant un élément arbre allongé (102) couplé à une sonde d'inspection (104) ; une pluralité de doigts (106), fixés de manière pivotante à une première extrémité de celle-ci sur une surface de montage fixée sur l'élément arbre (102), la pluralité de doigts (106) entourant de manière circonférentielle l'élément arbre (102) ; et un mécanisme de détente, disposé entre la pluralité de doigts et l'élément arbre, le mécanisme de détente (118) étant configuré pour étendre sélectivement et vers l'extérieur une seconde extrémité de la pluralité de doigts (106) par rapport à un axe longitudinal de l'élément arbre (102), de manière à amener la seconde extrémité de la pluralité de doigts (106) en contact avec une surface intérieure du tube devant être inspecté, en centrant ainsi la sonde d'inspection (104) dans le tube.

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