Leveling system for dry seal gasholders
AssigneeGATX Tank Erection Corporation
InventorMilton W. Heisterberg
Life of this patent
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Abstract
In a dry seal gasholder cylindrical storage tank with a vertically-movable piston, an improved piston leveling system includes a vertically-movable weight outside the tank and connected by equal-length cables to spaced-apart support points on the piston at different distances from the weight. An array of guide sheaves on the tank define equal-length cable paths. The cables are pivotally coupled to spaced-apart points on a coupling plate to which a pair of attachment plates on the weight are also pivotally connected. Apertures in the attachment plates and the coupling plate are disposable in registry with one another for receiving a pin therethrough when the cable attachment points are in horizontal alignment, thereby to indicate equal tension in the cables.
Claims14
In a piston leveling system for a cylindrical storage tank with a vertically movable piston, wherein the leveling system includes a vertically movable weight disposed outside the tank and adapted to be coupled to two spaced-apart support points on the piston respectively by two elongated flexible connectors, the improvement comprising:
- a coupling member, first means pivotally connecting the flexible connectors to said coupling member respectively at two spaced-apart connector attachment points thereon, second means pivotally connecting the weight to said coupling member at a weight attachment point thereon between and substantially equidistant from said connector attachment points, and indicating means for indicating whether or not said connector attachment points are in horizontal alignment.
In a piston leveling system for a cylindrical storage tank with a vertically movable piston, wherein the leveling system includes a vertically movable weight disposed outside the tank and adapted to be coupled to two spaced-apart support points on the movable piston at different distances from the weight, the improvement comprising:
- two elongated flexible connectors of substantially equal length, a coupling member, means pivotally connecting one end of each of said flexible connectors to said coupling member respectively at two spaced-apart connector attachment points thereon, the other ends of said flexible connectors being respectively attached to the piston support points, guide means carried by the tank and defining two substantially equal-length paths between the piston support points and the coupling member, said guide means engaging said flexible connectors for guiding them respectively along said paths, attachment means pivotally connecting the weight to said coupling member at a weight attachment point thereon between and substantially equidistant from said connector attachment points, and indicating means for indicating whether or not said connector attachment points are in horizontal alignment.
Dependencies are inferred from the claim text.