Vortex-induced vibration suppression device with ribbon and used for marine pipeline

Abstract

The invention relates to a vortex-induced vibration suppression device with a ribbon and used for a marine pipeline. The vortex-induced vibration suppression device with the ribbon and used for the marine pipeline is arranged at the periphery of the marine pipeline, and comprises a slide sleeve, a spoiler (4) and the ribbon (5), wherein the slide sleeve comprises an inner sleeve (13) and an outersleeve (14); the inner sleeve (13) is fastened to the periphery of the marine pipeline; the inner sleeve (13) is connected with the outer sleeve (14) through a bearing (10), so that the outer sleeve (14) is capable of rotating relative to the inner sleeve; the spoiler (4) is connected with the outer sleeve (14); and the rubber ribbon (5) is connected with the spoiler (4). The vortex-induced vibration suppression device with the ribbon and used for the marine pipeline has the capacity of being self-adaptive to the direction of an ocean current, and is capable of much effectively suppressing vortex-induced vibration.

Description

technical field [0001] The invention relates to an additional device for suppressing vortex-induced vibration of a marine pipeline, which belongs to the technical field of marine engineering. Background technique [0002] The offshore riser is the bridge between the offshore platform and the subsea oil field, and is a key part of the deep-sea oil and gas extraction system, responsible for the transportation of oil and gas. When the oil production platform is exploiting deep water oil and gas, the structural reliability of the offshore riser is of great significance to the normal operation of oil and gas drilling. The marine riser is in the complex environment of the deep sea. The ocean current flowing through the riser will form a vortex, and an asymmetric vortex will be formed behind the riser and shed, causing the pipeline to vibrate. When the frequency of vortex shedding is close to or equal to the natural frequency of the riser, resonance phenomenon, that is, vortex-ind...

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Problems solved by technology

[0010] The purpose of the present invention is to manufacture a vortex-induced vibration suppression device with streamers that is simple in assembly, light in structure, corrosion-resistant in materials, and adaptive to the direction of sea currents, so as to overcome the difficulty in assembling the existing devices, the high cost of component manufacturing, and the complexity of the vibration suppression mechanism. defects, realize simple assembly, stable device structure and effective vortex-induced vibration suppression device, and prolong the service life of marine pipelines such as deep-sea flexible risers

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