Pump bearing system

Details Pump bearing system Pump bearing system

F - Mech Eng,Light,Heat,Weapons

04

D

103/119

F04D 29/00 (2006.01) F04D 29/04 (2006.01) F04D 29/10 (2006.01)

Patent

CA 2040869

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 The leakage into the fluid collection chamber is withdrawn and reused in the usual manner.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.

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