Deep well submersible pump with upthrust protection

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

Patent

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Details

F04B 47/14 (2006.01) F04B 47/06 (2006.01)

Patent

CA 2192278

A deep well submersible pump is disclosed. It includes a plurality of pump stage assemblies, each of which comprises a diffuser stage, an impeller and a stage plate. The pump diffuser stage and impeller designs disclosed herein incorporate a means of continuously counteracting and absorbing upward thrust forces imposed on a pump when intermittently or continuously operated at low discharge pressures and high flow rates outside the normal design or operating range of the pump. Wear on the impellers when the pump is operating in upthrust conditions is thus reduced.

Présentation d'une pompe submersible pour puits profond. La pompe comprend plusieurs ensembles d'étages de pompe. Chaque ensemble se compose d'un étage pour le diffuseur, d'une roue et d'une plaque. Les types d'étage du diffuseur de la pompe et de roue de la présente invention possèdent un dispositif permettant de continuellement annuler et absorber les forces de poussée vers le haut que subit la pompe lorsqu'elle fonctionne de façon intermittente ou continue à de basses pression de refoulement et à des débits élevés qui ne correspondent pas à la capacité théorique ou à la plage de fonctionnement de la pompe. L'usure des roues lorsque la pompe fonctionne lors de poussées vers le haut est ainsi réduite.

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