Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade

The invention relates to a device and a method for inhibiting vortex-induced vibration of a spiral strake with rotating blades. The device for inhibiting vortex-induced vibration of the spiral strake with the rotating blades is characterized by being combined by multiple basic units, and each basic unit is composed of a sleeve, spiral strakes and blades; three spiral strakes are arranged on the outer surface of the sleeve and are uniformly distributed in 120 degrees, each spiral strake rotates around the sleeve for one circle, and six blades which can rotate freely are mounted on three vertical lines in the circumferential direction of the outer side of the sleeve; under the action of ocean current, the blades are driven to rotate, and a streaming boundary layer of a vertical pipe is destroyed; under the combined action of the spiral strakes and the blades, a streaming flow field of the vertical pipe is fundamentally destroyed, so that a vortex-induced vibration inhibiting effect is improved. The device for inhibiting vortex-induced vibration of the spiral strake with the rotating blades is processed by plastic, low in cost and resistant to corrosion and can be repeatedly used.