Measuring device for internal pipe dimensions

Details Measuring device for internal pipe dimensions Measuring device for internal pipe dimensions

G - Physics

01

B

33/184

G01B 3/00 (2006.01) G01B 5/00 (2006.01) G01B 7/00 (2006.01) G01B 7/13 (2006.01) G01B 7/287 (2006.01)

Patent

CA 1150496

MEASURING DEVICE FOR USE WITH TUBULAR PRODUCTS Abstract of the Disclosure Apparatus for detecting variations in the internal dimensions of a pipe includes a plurality of cantilever members for engaging the internal surface and strain gauges mounted on the cantilever members which are responsive to the flexing of the cantilever members. A Wheatstone bridge is utilized to measure changes in resistance of the strain gauges and hence the amount of flexing of the cantilevers due to undulations in the internal surface. The apparatus is particularly useful in detecting and measuring dents in tubes of nuclear power plant steam generators caused by corrosion of steel support plates.

355860

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