NDLI: Axial Air-Gap Motor for Liquid-Metal-Bearing Test Rig

Content Provider	IEEE Xplore Digital Library
Author	Wesolowski, A. J. Brown, Floyd M.
Copyright Year	1963
Abstract	A test rig for liquid-metal-bearing development required a motor drive. The initial test rig utilized liquid potassium. at temperatures up to 600° F for the working fluid. A conventional two-pole induction motor with standard bearings was first used as a drive motor. It required shaft seals which were separated by an argon barrier; however, leaking seals and potassium, contamination due to seal wear and the motor bearing lubrication presented a large problem. For a liquid-mercury test rig it was decided that the drive motor should be directly coupled to the test bearing shaft. This led to the development of an axial air-gap, unskewed motor. The windings were to be sealed in epoxy-glass laminate, but the rotor was to be exposed to the mercury vapor. Such a motor was built and tested, and proved to be so successful that a second motor was built and adapted to the liquid-potassium-bearing test rig.
Starting Page	428
Ending Page	430
Page Count	3
File Size	1258486
File Format	PDF
ISSN	05361516
Volume Number	2
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1964-04-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Air gaps Testing Seals Induction motors Shafts Motor drives Temperature Argon Contamination Lubrication
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Aerospace Engineering

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