Dry gas seal with electronically controlled carrier load
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United States of America Patent
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May 25, 2021
Grant Date -
Aug 13, 2020
app pub date -
Apr 30, 2020
filing date -
May 15, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A mechanical seal assembly with an electronically controllable carrier load. The assembly includes a magnetic ring affixed to the carrier and driven by a solenoid. The solenoid can apply an axial force to the carrier. The carrier load can be controlled to prevent or reduce friction between the primary ring and mating ring in slow-roll running conditions by partially or completely compensating a spring force provided by a biasing mechanism. The carrier load can further be controlled to inhibit seal hang-up. In embodiments, desired the carrier load can be determined by rotational speed. In embodiments, carrier load can be determined based on sensor signals.
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