Damage and leakage barrier in all-composite pressure vessels and storage tanks
AssigneeComposite Technology Development, Inc.
InventorsJohn Cronin, Kaushik Mallick, Mark Lake, Mark Warner, Naseem Munshi
Life of this patent
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Abstract
A linerless tank structure has a body that defines an enclosed interior volume. The body has a cylindrical section having an axis of symmetry and a dome section coupled with the cylindrical section. The construction of the pressure vessel includes multiple fiber plies. At least one of the fiber plies is a helical ply having fibers traversing the dome helically about the axis of symmetry. At least a second of the fiber plies is a braided or woven ply.
Claims17
An all-composite pressure vessel or storage tank defining an enclosed interior volume and comprising:
- a plurality of structural plies;
- one or more barrier plies comprising:
- reinforcement fibers that impart a predictable, burst-strain capacity to the barrier plies;
- and
- a polymeric resin that provides a resistance to microcracking and incipient leakage under pressurization and leading up to strains that exceed the burst-strain capacity of the barrier plies;
- wherein the barrier plies exhibit a burst strain that is less than a burst strain exhibited by the plurality of structural plies.
A storage tank comprising:
- one or more barrier layers comprising
- a plurality of fibers;
- a ductile resin;
- and
- a plurality of non-barrier layers,
- wherein the first mode of failure under pressurization is rupture of the barrier layer.
A storage tank comprising:
- one or more barrier layers comprising a plurality of braided fibers and a ductile resin;
- and
- a plurality of structural layers comprising fibers and resin, wherein at least one of the structural layers is disposed over one of the barrier layers,
- wherein the first mode of failure under pressurization is rupture of the barrier layer.
Dependencies are inferred from the claim text.