Electric actuator for coke drum unheading valve
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United States of America Patent
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Jul 12, 2016
Grant Date -
Oct 31, 2013
app pub date -
Oct 5, 2012
filing date -
Apr 30, 2012
priority date (Note) -
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Abstract
An electric actuator is provided for operating an unheading valve of a coke drum. The electric actuator includes a driving element comprising a planetary roller screw for actuating the unheading valve. By using a planetary roller screw, rather than hydraulics for the driving element, the electric actuator of the present invention can be used in place of hydraulic actuators while still providing sufficient power and reliability for use with an unheading valves of a coke drum.
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