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Coke drum unheading device

  • US 5,098,524 A
  • Filed: 12/10/1990
  • Issued: 03/24/1992
  • Est. Priority Date: 07/29/1988
  • Status: Expired due to Term
First Claim
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1. In a coke drum system including a drum body and a drumhead, the improvement in combination therewith comprising:

  • an actuator means for moving said drumhead relative to said drum body, said actuator means being operable from a location remote from said drumhead;

    said drum body having an upper cylindrical portion and a lower frusto conical portion terminating at a cylindrical drum outlet;

    said drum body further including a stiffener ring means for supporting said actuator means and circumferentially mounted on said frusto conical lower portion, said stiffener ring means including one or more mounting lugs to provide actuator means support;

    said drum outlet including flange hinge tabs for mounting said drumhead;

    said drumhead being circular and configured to mate with said drum outlet and having mounted thereto a generally T-shaped cover stiffener including an actuator support portion having opposing ends and a hinge support portion;

    said hinge support portion having a cover hinge tab extending therefrom;

    said cover hinge tab being pivotally mounted by pin means to said flange hinge tabs;

    said actuator support portion of said cover stiffener having pivotally mounted to the ends thereof a pair of universal joints to provide actuator means support;

    said actuator means comprising a pair of hydraulic cylinders mounted at one end to said universal joints and at the other end to said mounting lugs whereby actuation of said hydraulic cylinders pivots said drumhead between closed and open positions with respect to said drum body outlet.

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