Rotating machinery with adaptive bearing journals and methods of operating
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United States of America Patent
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Dec 5, 2017
Grant Date -
Mar 24, 2016
app pub date -
Apr 24, 2014
filing date -
Apr 24, 2013
priority date (Note) -
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Abstract
A method for operating a rotating machinery comprising a rotor, a rotor shaft, and at least one journal bearing supporting the rotor shaft is disclosed. The bearing comprises a bearing housing, a bearing surface in the bearing housing, a sleeve torsionally and axially fitted on the shaft, and a lubrication oil film filling a clearance between the outer surface of the sleeve and the bearing surface. The method comprises the step of modifying the clearance by modifying a radial dimension of the outer surface of the sleeve as a function of a rotation speed of the shaft.
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