Jet pump with labyrinth seal
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United States of America Patent
Stats
-
Aug 25, 1981
Grant Date -
N/A
app pub date -
Jul 12, 1979
filing date -
Jul 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a jet pump for a nuclear reactor a slip joint is provided between the mixer and diffuser sections thereof to facilitate jet pump maintenance and to allow thermal expansion. To limit leakage flow through the slip joint to a rate below that which causes unacceptable flow induced vibration of the pump, there is provided a labyrinth seal for the slip joint in the form of a series of flow expansion chambers formed by a series of spaced grooves in the annulus of the slip joint.
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