Balanced rotary seal ensuring tightness of a hydraulic turbine shaft
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United States of America Patent
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Dec 22, 1987
Grant Date -
N/A
app pub date -
Jan 28, 1986
filing date -
Feb 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A balanced rotary seal assembly for positively adjusting the seal between a rotating shaft such as a hydraulic turbine shaft having rotary components carried thereby and the surrounding non-rotating machine elements wherein the seal assembly includes a plurality of counteracting pressure applying and fluid conduit devices which are radially spcaed about the axis of the shaft so that an adjustable and variable force is uniformly created so as to regulate the engagement of a pair of annular seal elements against an annular wear plate carried by the rotary components of the turbine and wherein fluid flow to the seal elements and wear plate is generally insured whenever the rotary components are moved relative to the seal elements.
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