Method for momentary hydrostatic operation of hydrodynamic thrust bearings in a vertical fluid displacement module
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United States of America Patent
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Feb 14, 2017
Grant Date -
Sep 18, 2014
app pub date -
May 30, 2014
filing date -
Dec 17, 2010
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Abstract
A method for axial support of a pump or compressor rotor shaft during start-up or shut-down of a vertical fluid displacement module for subsea operation including a motor and a pump or compressor. Lubrication fluid is momentarily supplied for hydrostatic operation of hydrodynamic thrust bearing(s) from a topside or land-based fluid supply via a flow control module arranged in conjunction with a subsea pressure control unit configured for controlling the supply and discharge of barrier and lubrication fluids to/from the fluid displacement module.
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