Buckle-in buckle arrestor with vortex-induced vibration suppression function

Abstract

The invention discloses a buckle-in buckle arrestor with a vortex-induced vibration suppression function. The buckle-in buckle arrestor comprises shells which are formed by splicing and buckling two symmetrical clasped shell bodies, the overall contour of the shells is similar to a pod, and the outer surface of the shells changes in a simple harmonic mode in the axial direction. The middle and the two ends of the axial direction of the two symmetrical clasped shell bodies enable the shells to be tightly clasped on a submarine pipeline through buckling and fixing structures. Each shell comprises two wave crests and three wave troughs in the axial direction, the ratio of the wave height to the wavelength is larger than 0.05, the wave crests form VIV restraining sections with circular cross sections, and the wave troughs form buckling arresting sections tightly combined with the submarine pipeline. The gap between the inner diameter of the buckle arrestor and the outer surface of the submarine pipeline does not exceed 1-2% of the outer diameter of the submarine pipeline. According to the buckle-in buckle arrestor with the vortex-induced vibration suppression function, vortex-induced vibration of the submarine pipeline in different incoming flow directions can be effectively restrained, buckling propagation possibly occurring in the life cycle of the pipeline can be prevented, so that unification of function integration and simplified design is achieved, and meanwhile the production cost is reduced.

Description

technical field [0001] The invention relates to a novel snap-in buckle arrester with the function of suppressing vortex-induced vibration, which belongs to the field of marine pipeline engineering. Background technique [0002] In recent years, with the rapid and sustainable development of the global economy, people have gradually increased the exploitation and utilization of offshore oil and gas resources. Among the facilities and equipment for the exploitation and transportation of offshore oil and gas resources, submarine pipelines can efficiently and quickly transport resources such as oil and natural gas produced by subsea oil wells to land, and have the advantages of easy installation, low cost and efficient transportation. Submarine pipelines have become a key component of the offshore oil and gas resource transportation system and the main artery of submarine energy material transportation. [0003] 1. Buckling Propagation and Buckling Arresters for Submarine Pipeli...

AI Technical Summary

Problems solved by technology

[0008] At present, common vortex-induced vibration suppression devices include spiral strakes, fin-shaped fairings, twisted cylinders, etc. Among them, the spiral strakes have a better effect on suppressing vortex-induced vibrations in a fixed incoming flow direction, and the cost is relatively low, but the disadvantages are It will produce large fluid resistance; the overall suppression effect of the fairing is good, but the design is complicated and the cost is expensive; the twisted cylinder can only adapt to the working condition of one incoming flow direction, and the adaptability is poor

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