Helical strake vortex induced vibration inhibiting device
2011
The invention relates to a helical strake vortex induced vibration inhibiting device. The device is characterized by comprising a plurality of strip strakes, a plurality of chucks and a ligature, wherein the strakes are alternately arranged on the outer wall of a marine riser, and are helically arranged along the axial direction of the marine riser; the chucks are alternately fixed on the marine riser, and a plurality of grooves are formed on each chuck; and each strake is arranged in the groove of the chuck corresponding, and is fastened in the chuck through the ligature. The device has a simple structure, and the strakes can adopt a continuous structure to facilitate marine on-site assembly, thus the efficiency of marine on-site assembly is remarkably improved, and the device has remarkable economic benefits, and can be applied to the marine riser widely.
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