Helically traveling non-destructive system for the detection of

Details Helically traveling non-destructive system for the detection of Helically traveling non-destructive system for the detection of

1998-04-21

2000-08-08

Strecker, Gerard

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324228, 324235, G01N 2782

Patent

active

06100684&

ABSTRACT:
A helically movable system for the detection of cracks in a pipeline, capable of moving inside this pipeline, produces a magnetic flux that passes into a portion of the pipeline. Detectors measure local magnetic fields on the inner surface of the pipeline. These measurements are provided for processing and storage. The system is driven by the fluid flowing in this pipeline. Devices for the generation of flux and the measuring are arranged within at least one cylindrical housing having wheels to make this housing follow a substantially helical path inside the pipeline.

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patent: 5532587 (1996-07-01), Downs et al.
patent: 5565633 (1996-10-01), Wernicke
patent: 5751144 (1998-05-01), Weischedel
patent: 5864232 (1999-01-01), Laursen

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