Crysosorption pump for the rotor of an electric machine having a superconducting exciter winding

US4727724A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Lutz Intichar
• Wolfgang Schmidt
• Christoph Schnapper · Erlangen, DE
• Karl-Heinz Spiess · Much, DE
• Erich Weghaupt · Mülheim, DE

Key dates

• Filing date: Mar 9, 1987
• Grant date: Mar 1, 1988
• Expiry date: Mar 9, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E40/60
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A cryosorption pump for perpetuating a thermal insulating vacuum in the superconducting rotor of an electric machine, in particular, a turbogenerator, is constructed in a co-rotating transfer part of the rotor along the axis of rotation thereof. The rotor comprises a superconducting exciter winding part which is to be cooled by a cryogenic coolant, and to which winding part the coolant is introduced via at least one appropriate coolant supply line. The chambers of the rotor winding part to be evacuated are directly connected to the cryosorption pump in the co-rotating transfer part. Furthermore, the cryosorption pump is thermally connected within the co-rotating transfer part with the at least one coolant supply line.