METHOD AND APPARATUS FOR LUBRICATING A SCREW PUMP SYSTEM

WIPO Patent Application WO/2010/126651

A3

A pump system includes inlet chambers, an outlet chamber, and rotors disposed inside the inlet chambers and the outlet chamber to pump a process fluid from the inlet chambers to the outlet chamber and to direct the process fluid to a separator. A gear chamber is configured to receive a portion of the process fluid from the separator. First and second sets of pump bearings are coupled to the rotors and lubricated by the portion of the process fluid flowing from the gear chamber. A conduit is configured to direct the portion of the process fluid from the pump bearings back to the gear chamber. Some of the portion of the process fluid lubricating the pump bearings is permitted to leak to the inlet chambers. Additional process fluid is continually added to the portion of the process fluid to compensate for fluid leaking to the inlet chambers.

KOTHNUR VASANTH (US)
ANDERSON DAVID DELOYD (US)
DREXEL MICHAEL V (US)
STEEN THOMAS (US)
GHASRIPOOR FARSHAD (US)
DEO HRISHIKESH VISHVAS (US)

PCT/US2010/026983

March 31, 2011

March 11, 2010

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GEN ELECTRIC (US)
KOTHNUR VASANTH (US)
ANDERSON DAVID DELOYD (US)
DREXEL MICHAEL V (US)
STEEN THOMAS (US)
GHASRIPOOR FARSHAD (US)
DEO HRISHIKESH VISHVAS (US)

F04C2/16; F04C11/00; F04C13/00; F04C15/00

US6457950B1	2002-10-01
US20090098003A1	2009-04-16
EP0297274A2	1989-01-04
EP1087140A2	2001-03-28
US5011388A	1991-04-30
DE102005037118B3	2007-01-18
US5871340A	1999-02-16

PHILLLIPS, Roger, C. et al. (Global Patent Operation2 Corporate Drive, Suite 64, Shelton CT, US)

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