Apparatus and method for in-situ cathodic protection of piggable water pipelines
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United States of America Patent
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Jul 27, 2021
Grant Date -
Aug 13, 2020
app pub date -
Apr 28, 2020
filing date -
Nov 16, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Apparatus and method for cleaning the inner surface of a pipeline from deposits and for forming a protective coating are disclosed. The apparatus includes a cleaning tool which is caused to move in the interior of the pipeline by a flow of a fluid, the cleaning tool comprising a plurality of guide discs engaging the pipeline surface and mounted along a longitudinal axis of the cleaning tool, an anode positioned inside the cleaning tool, and an impressed current source electrically connected to the anode and the interior of the pipeline, the interior of the pipeline acting as a cathode when current is applied from the current source so that ions flow from the anode, through the fluid, to the interior of the pipeline.
First Claim
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International Classification(s)
- C25D:PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC ....
- F16L:PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR ....
- B05C:APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- B05D:PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- B08B:CLEANING IN GENERAL; PREVENTION OF FOULING IN GENE....
- C23F:NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM S....
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