Crysosorption pump for the rotor of an electric machine having a

Details Crysosorption pump for the rotor of an electric machine having a Crysosorption pump for the rotor of an electric machine having a

1987-03-09

1988-03-01

Capossela, Ronald C.

Refrigeration

Low pressure cold trap process and apparatus

62505, 310 64, B01D 800

Patent

active

047277246

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.

REFERENCES:
patent: 3648473 (1972-03-01), Stephenson
patent: 4079273 (1978-03-01), Lambrecht et al.
patent: 4274022 (1981-06-01), Elsel
Theorie und Praxis der Vakuumtechnik, Advances in Cryogenic Engineering, vol. 23, by K. D. Timmerhaus.
Helium Pumping at 4.2 K by Molecular Sieve 5A, by P. W. Fisher and J. S. Watson.
Technical Overview of the German Program to Develop Superconducting AC Generators, by L. Intichar.
Development of a Helium Transfer Coupling for a Superconducting Generator Rotor, by B. B. Gamble.
Desorption Cooling Below 12 K Using He.sup.4 Desorbed from Synthetic Zeolite, by J. G. Daunt and C. Z. Rosen.

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