Axial flow pump for debris-laden oil

Details Axial flow pump for debris-laden oil Axial flow pump for debris-laden oil

1993-03-26

1995-01-31

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing with axial flow runner

4152082, 4174241, F04D 300

Patent

active

053854470

ABSTRACT:
An axial flow pump for handling debris-laden viscous fluid flow, for example of the type encountered in cleaning up oil spills in off-loading stricken oil tankers. The pump includes a bell- or venturi-shaped intake, rotating impeller mounted in the intake, a fixed stator downstream of the impeller, and suitable hydraulic motor means for rotating the impeller to pull oil through the pump from the intake inlet to an outlet. The surface of the intake is specially contoured at a first region from the inlet to the throat or impeller face to reduce and compensate for cavitation and viscous boundary layer growth in that region. A second portion of the intake from the throat or impeller face to the impeller exit is also specially contoured to compensate for viscous boundary layer growth, but modified in view of the impeller-generated forces and debris concentrations in that region which affect viscous boundary layer growth. The impeller/stator blade interface includes a specially-contoured outer region to prevent debris-jamming at the interface.

REFERENCES:
patent: 1974107 (1934-10-01), Hait
patent: 2824520 (1958-02-01), Bartels
patent: 3398694 (1968-08-01), Lerch
patent: 4063849 (1977-12-01), Modianos
patent: 4932848 (1990-06-01), Christensen
Technical Manual for CCN 150-5C, Kvaener-Eureka; Oct. 1992.

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