Active vortex-induced vibration suppression device

Abstract

The invention provides an active vortex-induced vibration suppression device, belonging to the field of vortex-induced vibration suppression devices for marine risers. The device comprises a fixed seat, two vane rotators, a rotating seat, a rotating seat cover, an external guide plate, an internal guide plate and a transmission shaft, wherein the two vane rotators are installed on the fixed seat of a limiting hoop device; the rotating seat and the rotating seat cover are connected through bolts and are installed on the fixed seat of the limiting hoop device; the gear end of the transmission shaft is meshed with the gear ends of the vane rotators; the middle part of the transmission shaft is combined with a bearing and installed on a support seat; the support seat and a support seat cover are connected through bolts; an impeller is installed at the smooth end of the transmission shaft through a key groove and nuts and arranged in a pump barrel; a cover board is connected with the pump barrel of the impeller through bolts; the external guide plate is articulated with the rotating seat; and one end of the internal guide plate is embedded at the inner side of the external guide plate, and the other end of the internal guide plate is articulated with a push rod. The active vortex-induced vibration suppression device is skillful in structural design, high in application value, and capable of better suppressing vortex-induced vibration of marine risers at high and low flow rates.

Description

technical field [0001] The utility model The invention belongs to the field of vortex-induced vibration suppression devices for marine risers, in particular to a vortex-induced vibration suppression device for marine risers that can automatically adjust deflectors. Background technique [0002] With the challenges of the energy crisis and the depletion of onshore oil resources, my country's deep-water offshore oil and gas exploration and development has become an inevitable development trend. As a key component to ensure the normal operation of deep-sea oil and gas exploration and development, the riser will encounter the problem of vortex-induced vibration caused by the action of waves and currents. When the frequency of vortex-induced vibration is close to the natural frequency of the riser, resonance will occur, which will seriously affect the Riser strength and lifespan. Therefore, it is necessary to design an effective and convenient vortex-induced suppression device t...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the limitations of the existing technology that the vortex-induced vibration suppression device of the marine riser cannot be adjusted in real time according to the speed and direction of the water flow, and provides a device that is easy to install on site, has reliable performance, and can adjust the diversion in real time according to the water flow condition. The vortex-induced vibration suppression device for the direction and angle of the plate

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