Reduced diameter downthrust pad for a centrifugal pump

Details Reduced diameter downthrust pad for a centrifugal pump Reduced diameter downthrust pad for a centrifugal pump

1987-12-28

1989-06-13

Look, Edward K.

Rotary kinetic fluid motors or pumps

Resilient or movably mounted blade portion or axially...

4151992, 415901, F04D 2904

Patent

active

048387584

ABSTRACT:
A submersible centrifugal pump has a downward thrust washer of reduced diameter. The pump has a housing containing a plurality of stages of impellers and diffusers. Each impeller is rotated by a shaft for discharging fluid upward and outward into an intake of a diffuser. A counterbore is formed in the upper end of a bore that passes axially through the diffuser. An upward facing shoulder is located at the lower end of the counterbore. A thrust washer is located on the shoulder. An extension sleeve extends downward from the hub of each impeller into the counterbore of the diffuser of a next lower stage. Downward thrust on the impeller is transmitted through the extension sleeve to the thrust washer.

REFERENCES:
patent: 1655030 (1928-01-01), White
patent: 2775945 (1957-01-01), Arutunoff
patent: 3116696 (1964-01-01), Deters
patent: 3265001 (1966-08-01), Deters
patent: 3361073 (1968-01-01), Medgyesy
patent: 3612716 (1971-10-01), Deters
patent: 4741668 (1988-05-01), Bearden

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