Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Scroll or helical type casing with specific exit nozzle
Patent
1987-10-13
1988-05-03
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Scroll or helical type casing with specific exit nozzle
415196, 4151991, F04D 2902
Patent
active
047416688
ABSTRACT:
A centrifugal submersible pump has wear resistant features to resist erosion due to sand laden fluid from a well. The pump has diffusers and impellers located within the housing. Each diffuser has a diffuser sleeve with a coaxial bore. The diffuser sleeve is of a material harder than the remaining portions of the sleeve. A hardened lower hub locates slidingly within each diffuser sleeve. The lower hub rotates with the shaft. Each impeller has an upper hub that locates above the lower hub and is also carried by the shaft for rotation with the shaft. The upper hub extends into the bore of the next upward diffuser sleeve. The lower hub is of a material harder than the upper hub and the vane section of the impeller.
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Bradley James E.
Garrett Robert E.
Hughes Tool Company
Kwon John T.
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