Submarine pipeline bending-resisting fixer and installing method thereof

Abstract

The invention belongs to the technical field of laying submarine pipeline facilities, and relates to a submarine pipeline bending-resisting fixer which is used for fixing and protecting a submarine pipeline. The submarine pipeline bending-resisting fixer comprises a semicircular upper shell, a lower base and a barrel-shaped top plate, wherein the lower base is a semi-cylindrical hollow cuboid, inner diameters of the upper shell and the lower base are same, outer edges of the upper shell and the lower base are tangent and provided with extending eye plates, the eye plates are used for connecting the upper shell and the lower base through a bolt and nut pair, and the lower base is connected with the barrel-shaped top plate through a bolt. The invention has the advantages of simple manufacture process, convenient installation and operation and low cost, and can be used for effectively fixing the submarine pipeline and preventing bending from spreading so as to ensure the stability and the integrity of the submarine pipeline and reduce the economic loss caused by structure damage by the bending of the submarine pipeline.

Description

technical field [0001] The invention belongs to the technical field of laying submarine pipeline facilities, and in particular relates to a device capable of effectively fixing a submarine pipeline and preventing buckling propagation. Background technique [0002] With the development and utilization of my country's offshore oil and gas resources, the construction of submarine pipelines in the process of oil and gas gathering and transportation is increasing. With the development of deep-sea oil and gas fields, most pipelines will operate in sea areas with a water depth of 2000-3000 meters. Pipelines laid in deep water areas are very likely to fail under the action of external loads, such as buckling and fatigue failures caused by high hydrostatic pressure in deep water areas and internal axial forces of pipelines, etc. Once the submarine pipeline is damaged, leaked, broken and other accidents, it will cause huge losses to the national economy, and also cause serious polluti...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional anti-bending device has a single form and function, which can only control the local deformation of the part, but can't do anything about the overall buckling

Even if the subsea pipeline installed with buckling arrestors is under complex loads, there is still the risk of large vertical uplift or lateral displacement. At present, there is no device that can prevent local buckling propagation and overall buckling.

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