Pump bearing system

Details Pump bearing system Pump bearing system

1990-04-27

1991-04-09

Hannon, Thomas R.

Bearings

Rotary bearing

Plain bearing

384144, 415111, F16C 3374, F04D 2908

Patent

active

050059904

ABSTRACT:
A centrifugal pump of the type specially adapted to be used as a boiler feed pump and including a bearing system at the driven end of the pump comprising a bearing chamber housing a flexible bearing supporting the pump shaft and being cooled by the fluid that is being pumped which is fed to the bearing through passages in the pump casing. The pump further includes controlled leakage seals located at each end of the bearing and adapted to leak the cooling fluid at controlled rates into both the chamber housing the pump impeller and a fluid collection chamber. The leakage into the fluid collection chamber is withdrawn and reused in the usual manner. The pump shaft engages additional seals which serve to prevent the pump cooling fluid from leaking to the outside of the pump.

REFERENCES:
patent: 3620639 (1971-11-01), Gaffal et al.
patent: 3652186 (1972-03-01), Carter
patent: 3676011 (1972-07-01), Reif
patent: 3749464 (1973-07-01), Satterthwaite
patent: 3912342 (1975-10-01), Schirm et al.
patent: 3930691 (1976-01-01), Greene
patent: 4268094 (1981-05-01), Greene
patent: 4389052 (1983-06-01), Shimizu et al.
patent: 4477223 (1984-10-01), Giroux
patent: 4543038 (1985-09-01), Kitaguchi
patent: 4783179 (1988-11-01), Katayama et al.

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