Annulus measuring device

Details Annulus measuring device Annulus measuring device

G - Physics

01

B

G01B 11/06 (2006.01) G01B 17/00 (2006.01)

Patent

CA 2127585

ABSTRACT Annulus Measuring Device Measuring device (10) for quickly and accurately determining the thickness of an annulus (56) between two cylindrical members, such as the catalyst retaining screens (58, 60) of a radial flow reactor, at any point along its length or around its circumference, comprises a wheeled cart having two sets of angularly mounted wheels (22, 24) which straddle the inner screen (58) and a pair of spring loadedplungers (40) with ball shaped contacts (46) which contact the outer screen (60). As the device is lowered into an annulus with a cable (70), a pair of ultrasonictransducers (94, 95) positioned inside the cart direct opposed beams radially of the annulus to permit the radial distance between the screens to be measured.

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