Thrust balancing device for cryogenic fluid machinery
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United States of America Patent
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Issued Date -
Mar 19, 2009
app pub date -
Feb 10, 2004
filing date -
Feb 10, 2003
priority date (Note) -
Abandoned
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Abstract
An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.
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