Transformer with improved natural circulation for cooling disc coils
US4000482A · kind A · utility
37Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1975 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Dec 31, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A liquid-cooled electrical transformer with a disc or flat coil transformer winding conventionally has vertical cooling ducts at both coil edges for upward flow of coolant by natural circulation. Higher winding ratings are obtained by mounting staggered partial flow barrier inserts in the vertical cooling ducts to force a small radial flow of coolant between the individual coils for improved heat transfer without excessively reducing the coolant flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.