Storage tank with self-draining full-contact floating roof
AssigneeChicago Bridge & Iron Company
InventorLarry Clifford Hiner
Life of this patent
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Abstract
A storage tank with a full-contact floating roof is provided with automatic drains that have drain openings that are elevated above the top surface of the deck of the roof. Tilting mechanisms are used to tilt the deck toward the drains, causing liquid on the deck surface to pool at the drains, rising to the level of the drain openings. Cables connected to elevated portions of the tank can be used to tilt the deck from above, and landing supports can be used to tilt the deck from below.
Claims24
A liquid storage tank that has a shell wall and a full-contact floating roof that has a single deck with a top surface and is designed to move vertically within the wall, floating upon the surface of product stored in the tank, the tank having:
- at least one gravity drain on the roof with an opening spaced at a significant distance above the top surface of the single deck;
- and
- a structure that enables the top surface of the single deck to be tilted toward the gravity drain opening.
Dependencies are inferred from the claim text.