Helical strakes and collar
AssigneeVIV Solutions LLC
InventorsDonald Wayne Allen, Julie Ann Dehne, Jeffrey Robert Dupuis
Life of this patent
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Abstract
A vortex-induced vibration (VIV) suppression system including a strake having a cylindrical body portion dimensioned to encircle an underlying tubular and having opposing ends that form at least one gap extending from a top end to a bottom end of the body portion, a fin portion extending radially outward from the body portion and helically positioned around the body portion, and a connecting member dimensioned to secure the opposing ends of the body portion in a fixed position with respect to one another; and a collar dimensioned to encircle the underlying tubular and position the strake at a fixed axial location along the underlying tubular.
Claims6
A vortex-induced vibration (VIV) suppression system comprising:
- a helical fin dimensioned to encircle an underlying tubular, the helical fin having a top end, a bottom end, and an outer edge extending between the top and the bottom end, and wherein the outer edge is radially outward from an underlying tubular when the helical fin is positioned around the underlying tubular, and the top end or the bottom end comprises an engaging member that protrudes above or below the top end or the bottom end when the helical fin is positioned around the underlying tubular;
- and
- a collar dimensioned to encircle an underlying tubular and axially align the helical fin along the underlying tubular, wherein the collar comprises a collar web and at least one flange extending radially outward from the collar web, and the engaging member extends through the at least one flange to couple the helical fin to the collar.
A vortex-induced vibration (VIV) suppression system comprising:
- a plurality of helical fins dimensioned to encircle an underlying tubular, each of the plurality of helical fins having a top end, a bottom end, and an outer edge extending between the top and the bottom end, and wherein the outer edge is radially outward from an underlying tubular when the helical fin is positioned around the underlying tubular, and the top end or the bottom end of each of the plurality of helical fins comprises an engaging member that protrudes above or below the top end or the bottom end when the helical fin is positioned around the underlying tubular;
- and
- a collar dimensioned to encircle an underlying tubular and axially align the helical fin along the underlying tubular, wherein the engaging member is attached to the collar.
Dependencies are inferred from the claim text.