Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1993-10-12
1995-05-02
Kwon, John T.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
F04D 2908
Patent
active
054113679
ABSTRACT:
Centrifugal pumps suffer from wear of the annular seal (1) between the impeller (2) and the casing or side liner (3), due to the returning flow of the rejoining fluid (9). The present invention ameliorates this problem by having the clearance of the annular seal (10, 11) at least adjacent the inlet (6) of the impeller (2) sloping, in the direction of the main fluid flow (7) into the impeller inlet (6), at an angle of between 0.degree. and 60.degree. to the axis of rotation of the impeller (2).
REFERENCES:
patent: 3221661 (1965-12-01), Swearingen
patent: 3226083 (1965-12-01), Braikevitch et al.
patent: 3265002 (1966-08-01), Warman
patent: 3881840 (1975-05-01), Bunjes
patent: 4432694 (1984-02-01), Kuroda et al.
patent: 4556364 (1985-12-01), Barker
patent: 4867638 (1989-09-01), Handtmann et al.
"Flue-gas Desulferization And Coal's Upswing Direct Your Attention To Slurry Pumping", Power, May, 1980, vol. 124, No. 5.
Kwon John T.
Warman International Ltd.
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