Patent ID: 9574562
Date: 2017-02-21
CPC Classifications: F04D

Claim:
1. A helico-axial pump for pumping a multiphase fluid, said helico-axial pump comprising: a housing having a longitudinal axis and an inner surface; a rotor positioned within said housing and comprising a rotor inlet portion and a rotor outlet portion, said rotor further comprising: a rotor flow channel extending between said rotor hub outer surface and said housing inner surface, said rotor flow channel having a rotor inlet area extending between said rotor hub outer surface and said housing inner surface at said rotor inlet portion, and a rotor outlet area extending between said rotor hub outer surface and said housing inner surface at said rotor outlet portion, wherein the rotor outlet area is smaller than the rotor inlet area; a stator positioned within said housing downstream from and adjacent to said rotor, said stator comprising a stator inlet portion and a stator outlet portion, said stator further comprising: a stator flow channel extending between said stator hub outer surface and said housing inner surface, said stator flow channel having a stator inlet area extending between said stator hub outer surface and said housing inner surface at said stator inlet portion, and a stator outlet area extending between said stator hub outer surface and said housing inner surface at said stator outlet portion, wherein the stator inlet area corresponds to the rotor outlet area, and the stator outlet area is larger than the stator inlet area.