Submergible centrifugal pump having improved diffuser bushings

Details Submergible centrifugal pump having improved diffuser bushings Submergible centrifugal pump having improved diffuser bushings

1998-08-17

2000-05-30

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural rigidly related blade sets

415104, 4151743, 4174241, F01D 102

Patent

active

060684445

ABSTRACT:
A submergible, centrifugal pump utilizes an improved bushing system for absorbing downthrust at each stage of the pump. The centrifugal pump is a multi-stage pump having a plurality of impellers keyed to a rotatable shaft. Diffusers cooperate with the impellers to conduct the pumped fluid upwardly from one impeller to the next. The improved support system comprises simple diffuser bushings that are generally cylindrical in shape, and relatively inexpensive to manufacture. Each diffuser bushing is disposed between a diffuser and the next upwardly sequential impeller to support that impeller with respect to the downthrust created during pumping.

REFERENCES:
patent: 4063846 (1998-03-01), Eagle
patent: 4678399 (1987-07-01), Vandevier et al.
patent: 4741668 (1988-05-01), Bearden
patent: 4781531 (1988-11-01), James
patent: 4838758 (1989-06-01), Sheth
patent: 4872808 (1989-10-01), Wilson
patent: 5722812 (1998-03-01), Knox et al.

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