公开(公告)号：WO2020106589A1

公开(公告)日：2020-05-28

申请号：PCT/US2019/061843

申请日：2019-11-15

Applicant: BAKER HUGHES, A GE COMPANY, LLC

Inventor： THOMAS, Deric ,  GUIJT, Gustav ,  WALLS, Matthew ,  KIRK, Jordan

IPC: F04D17/08 ,  F04D29/04 ,  F04D29/046 ,  F04D29/047 ,  F04D29/06

Abstract: A surface pumping system has a motor and a pump driven by the motor. The pump has a discharge on a first end of the pump, a suction end on a second end of the pump, and a plurality of stages between the suction end and the discharge. Each of the plurality of stages includes an impeller and a diffuser that encases the impeller. Each diffuser is an independent pressure vessel. In some embodiments, the diffuser and impeller in each stage are large and configured for use in low net positive suction head (NPSH) applications.