G - Physics – 01 – B
Patent
G - Physics
01
B
33/182
G01B 5/12 (2006.01) G01B 5/207 (2006.01) G01B 5/28 (2006.01)
Patent
CA 1284027
IMPROVED PIPELINE CALIPER PIG Abstract of the Disclosure An improved pipeline caliper pig for providing a record of the deviations of the interior wall of a pipeline including a pig body assembly having a longitudinal axis and support members so that the pig body assembly is supported within a pipeline, the support members impeding the flow of fluid therepast so that the pig body is propelled by fluid flow along the interior of the pipeline, an integrator plate carried by the pig body assembly, arms extending from the pig body assembly for responding to deviations in the interior wall of the pipeline and coupling members to transfer the deviations to the integrator plate, a plurality of axially positionable shafts affixed at one end to the integrator plate, and electrical transducers at the other end of each shaft so that movement of the integrator plate relative to the pig body is transmitted into electrical signals, an orientation detection member and a signal receiver and recorder to record the electrical signals of the transducers and the orientation detection member so that deviations in the interior wall of the pipeline and the orientations of such deviations relative to the vertical are recorded as electrical signals, the recorded signals being recoverable whereby the pipeline operator can be advised of the conditions of the inside wall of a pipeline through which the caliper pig has passed. An alternate embodiment includes the use of three odometer wheels producing electrical signals responsive to the rotation thereof providing indications of curves, bends, dips and rises in the pipeline.
527466
Lockyear Kevin W.
Rosenberg Jeffrey S.
Lockyear Kevin W.
Rosenberg Jeffrey S.
Smart & Biggar
T.w. Williamson Inc.
Tdw Delaware Inc.
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