Hyper-cooled liquid-filled transformer
US8081054B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 20, 2010 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Aug 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transformer is disclosed that includes a housing having a core-winding assembly positioned therein that is immersed in a dielectric transformer fluid contained within the housing. A cooling system is provided to cool the dielectric transformer fluid contained within the housing and includes a closed-loop fluid path having a quantity of dielectric cooling fluid that is circulated there through and that is maintained separate from the dielectric transformer fluid. A liquid-to-liquid heat exchanger is positioned along the closed-loop fluid path and within the housing so as to be immersed within the dielectric transformer fluid, with the liquid-to-liquid heat exchanger cooling the dielectric transformer fluid based on a liquid-to-liquid transfer of heat energy between the dielectric cooling fluid and the dielectric transformer fluid. The cooling system also includes a heat dissipation system positioned remotely from the liquid-to-liquid heat exchanger to cool the dielectric cooling fluid circulating through the closed-loop fluid path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.