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US 12,305,790 B2Granted
Inspection or cleaning pig
AssigneeRosen IP AG
InventorMichael Schulte
Life of this patent
Estimating the term…
Abstract
A pig is provided for passing through a pipeline having a pipeline wall. The pig comprises at least one functional unit for cleaning the pipeline and/or for receiving pipeline information. The pig also comprises at least one magnet unit which is provided for magnetizing the pipeline wall, and which has a plurality of magnets. The magnet unit has a plurality of segments each with at least one magnet. The magnetizing devices of mutually adjacent segments are angled at least by approximately 90° to one another.
Claims11
A pig for passing through a pipeline having a pipeline wall, the pig comprising:
- at least one functional unit for cleaning the pipeline and/or recording pipeline information;
- at least one magnet unit for magnetizing the pipeline wall, the at least one magnet unit having a plurality of magnets, wherein the magnet unit further includes a plurality of segments each with at least one magnet, wherein the magnetization directions of mutually adjacent segments are angled at least by approximately 90° to one another;
- wherein the magnet unit has magnets formed as permanent magnets, wherein the poles (N, S) of first and third segments which are directed toward each other, and which are separated by a further second segment, have an identical polarity;
- wherein second segment is a vertical segment with a magnetization direction directed in the direction of the pipeline wall in operation;
- wherein the second segment, viewed from a longitudinal central axis, is bounded radially on an outside by a focusing element.
2 more elements
Dependencies are inferred from the claim text.