Rotary kinetic fluid motors or pumps – With shaft connected fluid force subjected thrust balancing...
Patent
1996-01-25
1997-08-26
Kwon, John T.
Rotary kinetic fluid motors or pumps
With shaft connected fluid force subjected thrust balancing...
415107, 4151991, F01D 300
Patent
active
056605200
ABSTRACT:
A centrifugal pump adapted to be positioned in a wellbore in an inverted position to pump fluids downhole includes a pump housing, a rotatable shaft positioned within the pump housing, at least one pump stage positioned within the pump housing, with each pump stage comprising an impeller connected to and fixed relative to the shaft, and a stationary diffuser, and an upthrust bearing assembly positioned within the pump housing and comprising a rotatable thrust plate connected to the shaft and cooperating with a stationary thrust plate supported to the pump housing. The upthrust bearing assembly eliminates the need for a separate costly bearing assembly, such as would be included within an additional motor protector, when a centrifugal pump is positioned in a wellbore in an inverted position to pump fluids downhole.
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Camco International Inc.
Kwon John T.
LandOfFree
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