Digitally controlled corrosion protection system and method
US10793955B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2014 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Aug 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
At least one corrosion protection unit is located adjacent to a region of a structure immersed in an electrolyte. Each corrosion protection unit includes a circuit for applying rectified alternating current voltage between the structure and electrodes in the electrolyte. Each corrosion protection unit includes Reference Cells to produce direct current voltage between the Reference Cells and the structure, a measuring circuit coupled to the Reference Cells for measuring the potential between the Reference Cells and the structure, and a control circuit for controlling the level of the rectified alternating current voltage in accordance with the measured potential levels. Corrosion protection units are independent of one another, so that independently established rectified alternating current voltages are applied between different regions of the structure and e first and second corrosion protection units. Alternatively, the corrosion protection units apply constant current or constant voltage instead of Reference Cell feedback control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.