Deployment system for an upper bundle steam generator...

G - Physics – 21 – C

Patent

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Details

G21C 17/017 (2006.01) B08B 9/02 (2006.01) B08B 9/093 (2006.01) B65H 75/34 (2006.01) B65H 75/36 (2006.01) F16G 13/16 (2006.01) F16G 13/18 (2006.01) F16M 11/40 (2006.01) F22B 37/00 (2006.01) F22B 37/48 (2006.01) F28G 1/16 (2006.01) F28G 15/04 (2006.01)

Patent

CA 2182509

A deployment system for an upper bundle steam generator cleaning/inspection device (90), the deployment system including an elongated body (80) feedable through an access in a steam generator shell proximate the tube sheet (32) of the steam generator (10), the elongated body (80) flexible in one configuration to bend into a position for extension up through flow slots (28, 30) in support plates (12, 14, 16, 18, 22, 24, 26) of the interior of the steam generator (10), and rigid in another configuration for positioning and supporting cleaning/inspection devices (90) up through the steam generator (10) proximate the upper tube bundle (42) of the steam generator (10); and a drive (92, 106) for driving the elongated body (80) up through the support plates (12, 14, 16, 18, 22, 24, 26) and for retracting the elongated body (80) back down through the support plates (12, 14, 16, 18, 22, 24, 26).

L'invention concerne un système de mise en oeuvre destiné à un dispositif de nettoyage/contrôle (9) du faisceau tubulaire supérieur d'un générateur de vapeur, le système comportant un corps allongé (80) acheminable par l'intermédiaire d'un accès dans l'enveloppe du générateur de vapeur à proximité de la plaque tubulaire (32) du générateur de vapeur (10). Ce corps allongé (80) est flexible dans une configuration pour adopter par coudage une position permettant son déploiement vers le haut à travers des fentes de passage (28, 30) ménagées dans des plaques de support (12, 14, 16, 18, 22, 24, 26) de l'intérieur du générateur de vapeur (10), et rigide dans une autre configuration pour positionner et supporter des dispositifs de nettoyage/contrôle (90) en vue de les faire monter à travers le générateur de vapeur (10) au voisinage du faisceau tubulaire supérieur (42) de ce dernier. Le système de mise en oeuvre comporte également un entraînement (92, 106) permettant de faire monter le corps allongé (80) à travers les plaques de support (12, 14, 16, 18, 22, 24, 26) et de le rétracter en le faisant descendre à travers ces mêmes plaques.

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