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1. (WO2018077527) MULTIPHASE PUMP AND METHOD FOR OPERATING SUCH A PUMP

Pub. No.:    WO/2018/077527    International Application No.:    PCT/EP2017/072865
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Sep 13 01:59:59 CEST 2017
IPC: F04D 13/02
F04D 13/06
F04D 15/00
F04D 31/00
F04D 13/08
Applicants: SULZER MANAGEMENT AG
Inventors: BOURNE, Matthew
Title: MULTIPHASE PUMP AND METHOD FOR OPERATING SUCH A PUMP
Abstract:
A multiphase pump for conveying a multiphase process fluid is proposed having a common housing (2) surrounding a pump unit (3) and a drive unit (4), wherein the housing (2) comprises a pump inlet (5) and a pump outlet (6) for the process fluid, wherein the pump unit (3) comprises at least one impeller (7) for conveying the process fluid from the pump inlet (5) to the pump outlet (6), and a pump shaft (8) on which each impeller (7) is mounted, and wherein the drive unit (4) comprises a drive shaft (9) for driving the pump shaft (8), and an electric motor (10) for rotating the drive shaft (9) about an axial direction (A), and wherein a hydrodynamic torque converter (20) is provided for hydrodynamically coupling the drive shaft (9) to the pump shaft (8), the torque converter (20) having a casing (21) for receiving a transmission fluid, a pump wheel (22) connected to the drive shaft (9), a turbine wheel (23) connected to the pump shaft (8), and a stator (24) for guiding the transmission fluid to the turbine wheel (23). In addition, a method for operating such a multiphase pump (1) is proposed.