Arrangement for deep cooling a field winding in the rotor of an

Details Arrangement for deep cooling a field winding in the rotor of an Arrangement for deep cooling a field winding in the rotor of an

1980-05-12

1983-01-11

Grimley, A. T.

Electrical generator or motor structure

Dynamoelectric

Rotary

62 53, 310 60R, 310 64, H02K 900

Patent

active

043683975

ABSTRACT:
An arrangement for cooling the field winding of an electric machine to be deep cooled is provided with a rotating mixing chamber containing vaporous and liquid coolant and with a centrifugal pump between areas of different temperatures to pump gaseous coolant out of the mixing chamber. The maximum flow cross section of the colder line part of the centrifugal pump is at the most half the size of the maximum flow cross section of the warmer line parts and/or at least the end piece of the colder line part is thermally coupled to colder parts of the rotor to prevent pump instabilities caused by coolant convection.

REFERENCES:
patent: 4204134 (1980-05-01), Fritz et al.
patent: 4228374 (1980-10-01), Elsel
Parker and Towne, "Superconding Generator Design", EL-577 Research Project 429-1, prepared by Westinghouse Corporation, Final Report 1977, pp. 3-258 to 3-274 and pp. 3-289 to 3-294.

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