Centrufugal pump with thermally isolated and dynamically air cooled shaft seal assembly
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United States of America Patent
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Apr 29, 1997
Grant Date -
N/A
app pub date -
Oct 26, 1994
filing date -
Oct 26, 1994
priority date (Note) -
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Abstract
A high temperature, centrifugal pump includes a thermally isolated and dynamically air cooled shaft seal. Carbon graphite insulators formed of plural elements juxtaposed together (46) insulate the seal assembly (34) from the pump housing (16). A hollow drive shaft limits heat conducted from the impeller during operation while a fan (56) forcibly flows air past the seal assembly to conduct heat energy away from the shaft seal. The insulator (46) reduces heat energy conducted to the seal assembly (42).
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