Impeller for centrifugal pumps

Details Impeller for centrifugal pumps Impeller for centrifugal pumps

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/24 (2006.01) F04D 29/22 (2006.01) F04D 29/66 (2006.01)

Patent

CA 2068854

A cavitation resistant impeller for liquid-conveying centrifugal pumps has a plurality of impeller vanes, each vane having, in combination, a leading inlet edge with a root portion extending upstream of its tip portion; a vane thickness that is greater upstream of the impeller throat than the vane thickness downstream of the impeller throat; and an elliptical nose on the leading inlet edge. The invention can be used in straight-vaned impellers or in Francis-type impellers.

Cette invention concerne une roue anticavitation de pompe centrifuge à liquides, qui comporte une série d'aubes ayant, chacune, un bord d'attaque à l'aspiration dont la racine est en amont par rapport à son extrémité; une épaisseur qui est plus grande en amont de l'ouïe qu'en amont de celle-ci; et un nez elliptique sur le bord d'attaque à l'aspiration aspiration. Cette invention peut être adaptée aux roues à aubes radiales ou aux roues de type Francis.

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