Method and apparatus for reducing axial thrust in centrifugal pu

Details Method and apparatus for reducing axial thrust in centrifugal pu Method and apparatus for reducing axial thrust in centrifugal pu

1992-09-21

1994-06-14

Look, Edward K.

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

4151743, F01D 300, F04D 2904

Patent

active

053204824

ABSTRACT:
A control stator comprising a plurality of stationary vanes, ribs, or cavities is provided in a centrifugal pump having a shrouded impeller. The function of the control stator is to slow the swirl of fluid in the cavity between the casing and the impeller front shroud and thereby provide a very cost effective solution to the problem of excess axial thrust. The control stator is a simple, inexpensive non-rotating part that can be affixed in an existing space in the pump casing between the casing wall and the front shroud of the impeller.

REFERENCES:
patent: 4451213 (1984-05-01), Takei et al.
patent: 4586877 (1986-05-01), Wantanabe et al.
patent: 4854830 (1989-08-01), Kozawa et al.
patent: 4872806 (1989-10-01), Yamada et al.
patent: 5096396 (1992-03-01), Welch
patent: 5137418 (1992-08-01), Siegartner
patent: 5163810 (1992-11-01), Smith
Stephanoff, A. J., "Centrifugal and Axial Flow Pumps", 2nd Edition, pp. 2209 and 20-21.

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