Turbomachine shaft sealing arrangement
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
Aug 19, 2013
filing date -
Jan 13, 2012
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Abstract
A turbomachine with a rotary shaft supporting a turbine wheel is supported for rotation in a housing. The shaft extends through a bore in the housing and a bearing assembly being disposed in the bore. At least one end of the shaft has a primary seal and a secondary seal. The primary seal comprises a non-contact seal defined by an annular clearance between a first non-rotating seal element and a second seal element that rotates with the shaft. The primary seal is arranged to receive lubricating oil from the bearing assembly. An oil slinging feature is provided between the primary and secondary seals.
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