Method and apparatus for scanning a plurality of parallel...

Details Method and apparatus for scanning a plurality of parallel... Method and apparatus for scanning a plurality of parallel...

G - Physics

01

M

G01M 99/00 (2011.01) G01N 27/90 (2006.01)

Patent

CA 2274562

A method and apparatus for determining position size and shape of defects in a bundle of heat exchanger tubes are described. An AC current exciter coil is placed in one tube and a detector coil is placed in an adjacent tube. This configuration of exciter and detector coils reduces the blind spot effect caused by interference by tube support plates and allows the inspection multiple or finned heat exchanger tubing.

L'invention concerne un procédé et un appareil permettant de déterminer la taille et la forme des défauts d'emplacement dans un faisceau de tubes pour échangeurs de chaleur. Une bobine d'excitation de courant alternatif est placée dans un tube et une bobine de détection est placée dans un tube adjacent. Cette configuration des bobines d'excitation et de détection réduit l'effet de la zone de silence provoqué par une interférence par des plaques de support de tube et permet l'inspection de tubes multiples ou à ailettes pour échangeurs de chaleur.

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