Seal arrangement for a centrifugal type of pump
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United States of America Patent
Stats
-
Feb 20, 1990
Issued Date -
N/A
app pub date -
Jun 13, 1988
filing date -
Sep 25, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A centrifugal type of pump, for example one used for compressing steam, is disclosed herein. This pump includes an impeller located within a pump housing and connected to a power driven shaft assembly extending through a cooperating opening in the housing from outside thereof so as to rotate with the shaft assembly about the axis of the shaft assembly relative to the housing, whereby to cause fluid in the housing, for example steam, to be centrifugally forced radially outward. The pump also includes a sealing arrangement for preventing the steam or other such fluid within the housing from escaping through the housing opening containing the shaft assembly. This sealing arrangement is designed to provide a continuous liquid seal extending circumferentially around an axial section of the shaft assembly within the housing opening and radially between the axial shaft section and housing druing operation of the pump, whereby to seal the opening against the passage of steam or other such fluid within the housing.
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