Transformer hydrogen indicator
US8999723B2 · kind B2 · utility
0Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2014 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Apr 16, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reliable, low cost device for determining when dangerous levels of hydrogen gas have been generated in a transformer is disclosed. The hydrogen indicator is defined by a module assembly that threads into either the headspace or into the oil-filled body of a transformer. The module has an open interior that contains a film that incorporates a hydrogen-sensitive chemochromic indicator. The indicator film is visible through a lens. When the film has been exposed to hydrogen, chemical changes in the chemochromic indicator cause the film to change color—the color change is immediately visible through the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.