High-speed pressurized impeller disk
AssigneeP3 Technologies, LLC
InventorsBrandon A Demski, Robert W Sanders
Life of this patent
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Abstract
A centrifugal impeller includes a pressurized cavity that reduce the stresses in the impeller disk, blades, shroud and hub as the stiffness of the rotor is not compromised while weight is reduced across the component and peak stress regions are shifted across the part. The centrifugal impeller can be a centrifugal pump or a radial inflow turbine. The pressurized cavity is formed between a forward wall and an aft wall of the impeller and can include a plurality of orifices that open into the cavity to supply pressure from low to high pressure location around the impeller. Annular rings can be used within the cavity to stiffen the impeller. Radial and tangential stiffening ribs can be used on the two walls to stiffen the impeller.
Claims6
A pressurized impeller comprising:
- a hub;
- an axial opening;
- a radial opening;
- the axial opening and the radial opening being connected within the pressurized impeller to form a plurality of flow paths;
- the plurality of flow paths being formed within the pressurized impeller between a forward wall and an aft wall;
- and
- an internal pressurized cavity formed between the forward wall and the aft wall;
- and
- a first orifice located in the aft wall of the impeller and opening into the pressurized cavity.
A pressurized impeller comprising:
- a hub;
- a shroud;
- a forward wall;
- an aft wall;
- an axial opening;
- a radial opening;
- the axial opening and the radial opening being connected within the pressurized impeller to form a plurality of fluid flow paths;
- the plurality of fluid flow paths being formed within the pressurized impeller between the shroud and the forward wall;
- and
- an internal pressurized cavity formed between the forward wall and the aft wall, wherein a first orifice opens into the forward wall of the impeller.
Dependencies are inferred from the claim text.