Coolant circuit for the rotor of an electric machine having a superconductive excitation winding
US4079273A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Apr 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/878
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a coolant circuit for an electric machine rotor mounted on a shaft and having a superconductive excitation winding, a cold shield with a damping winding surrounding the excitation winding, as well as a coolant connecting head surrounding one end of the shaft at the excitation winding side thereof, a device for feeding coolant from a refrigerating machine through the coolant connecting head to an axial bore formed in the rotor shaft and from the axial bore to a collection chamber surrounding the shaft, coolant channels for the excitation winding disposed in the rotor, a cold shield with a damping winding surrounding the coolant channel in the rotor, a coolant outlet channel in the shaft communicating with the collection chamber, the coolant channels and the damping winding being connected to one another and connecting the axial bore formed in the rotor shaft to the coolant outlet channel, and a throttling member in the coolant outlet channel for reducing coolant outlet pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.