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US 2021/0062819 A1Published application
Impeller for centrifugal radial pump
AssigneeRuhrpumpen SA De Cv
InventorsYubal Sakanassi García, Victor de Jesús Melendez-Leal, Ovidio Montalvo Fernández, Tine Gantar
Life of this patent
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Abstract
Disclosed is an impeller designed to be used particularly in radial pumps. The impeller compensates for axial forces during pumping operations. The impeller utilizes vanes having 3D geometry which extend from the impeller intermediate plate eye to the external diameter of the intermediate plate. On the backside of the intermediate plate, the vanes define a plurality of hydraulic passages. The hub plate also includes a series of balancing holes.
Claims23
An impeller for a centrifugal pump comprising:
- an intermediate plate defining a suction side and a backside;
- a hub plate, said hub plate having an axle hole passing there through, the center of said axle hole defines a center line of said impeller;
- an impeller intermediate plate eye on the suction side of said intermediate plate, said impeller intermediate plate eye concentric with said axle hole;
- a plurality of vanes bisected by said intermediate plate wherein each vane has a first vane section located on said suction side of said intermediate plate and a second vane section located on said back side of said intermediate plate, wherein at least a portion of said second vane sections join said hub plate to said intermediate plate and define fluid passageways between said intermediate plate and said hub plate;
- each of said vanes has a first end proximate to said impeller intermediate plate eye and a second end located at the outer edge of said intermediate plate;
- a plurality of balancing holes passing through said hub plate, said balancing holes positioned concentrically about said axle hub and at least one balancing hole is positioned between adjacent second vane sections;
- wherein each vane first end defines an angle of about 15° to about 25° relative to said center line of said impeller and wherein each vane second end defines an angle of about 90° relative to the center line of said impeller;
- wherein each vane first end has an angle of inclination relative to said hub plate that is greater than the angle of inclination at said vane second end.
5 more elements
An impeller for a centrifugal pump comprising:
- an intermediate plate defining a suction side and a backside;
- a hub plate, said hub plate having an axle hole passing therethrough, the center of said axle hole defines a center line of said impeller;
- an impeller intermediate plate eye carried on the suction side of said intermediate plate, said impeller intermediate plate eye concentric with said axle hole;
- a plurality of vanes bisected by said intermediate plate wherein each vane has a first vane section located on said suction side of said intermediate plate and a second vane section located on said back side of said intermediate plate, wherein at least a portion of said second vane sections join said hub plate to said intermediate plate and define fluid passageways between said intermediate plate and said hub plate;
- each of said vanes has a first end proximate to said impeller intermediate plate eye and a second end located at the outer edge of said intermediate plate;
- a plurality of balancing holes passing through said hub plate, said balancing holes positioned concentrically about said axle hub and at least one balance hole is positioned between adjacent second vane sections;
- wherein each vane first end defines an angle of about 15° to about 25° relative to said center line of said impeller and wherein each vane second end defines an angle of about 90° relative to the center line of said impeller;
- wherein each vane defines a 3D configuration wherein said vane first end has an angle of inclination relative to said hub plate that is greater than the angle of inclination at said vane second end;
- wherein said first vane section has a first height at said vane first end that is greater than the height of said second vane section at said first end, wherein said first vane section has a second height at said vane second end that is substantially equal to the height of said second vane section at said second end;
- and,
- wherein the volume defined by the suction side of said intermediate plate and the first vane sections is approximately equal to the volume defined by the backside of said intermediate plate and said second vane sections and said fluid passageways between said intermediate plate and said hub plate.
8 more elements
Dependencies are inferred from the claim text.