Staged centrifugal pump apparatus for pumping a viscous fluid

F - Mech Eng,Light,Heat,Weapons – 04 – D

Patent

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Details

F04D 7/04 (2006.01) F04D 13/12 (2006.01) F04D 29/24 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2656658

A pump apparatus comprising a series of stacked impellers rotating about a common axis, for pumping a viscous fluid mixture upwardly from an underground location. The pump apparatus comprises a generally cylindrical housing having an intake at or near its suction end. A plurality of impellers are mounted in the housing to rotate about a shaft, which each induce flow of the mixture toward the discharge end of the pump. Each impeller has a series of radially outwardly extending vanes, one or more of such vanes having a radially- extending horizontal slot and arranged to generate an upwardly moving column of fluid. Without being limited to the theory of operation, the horizontal slot in the vanes assists in creating laminar flow and reducing turbulent flow.

Une pompe comprenant une série de rotors étagés tournant autour d'un axe commun, pour pomper un mélange de fluide visqueux vers le haut à partir d'un emplacement souterrain. La pompe comprend un logement généralement cylindrique muni d'une tubulure d'aspiration à l'extrémité de succion ou à proximité de celle-ci. Plusieurs rotors sont montés dans le logement afin de tourner autour d'un arbre, chacun incite l'écoulement du mélange vers l'extrémité de décharge de la pompe. Chaque rotor comprend une série d'aubes se prolongeant vers l'extérieur radialement, une ou plusieurs aubes étant munies d'une fente horizontale se prolongeant radialement et arrangées pour générer une colonne de fluide se déplaçant vers le haut. Sans être limitée à la théorie de l'opération, la fente horizontale des aubes aide à créer un écoulement laminaire et à réduire un écoulement turbulent.

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