Submarine pipeline suspension inhibition device

Abstract

The invention provides a submarine pipeline suspension inhibition device. The submarine pipeline suspension inhibition device is mounted during pipeline laying and comprises a backing plate and a pipeline supporting device, wherein the backing plate is deeply buried in a seabed, positioned under the seabed, connected with the pipeline supporting device and used for supporting and fixing the pipeline supporting device; the pipeline supporting device comprises a supporting groove and a pipeline supporting frame which is used for supporting the supporting groove, the upper part of the pipeline supporting frame is connected with the supporting groove, and the lower part of the pipeline supporting frame is connected with the backing plate; a groove is formed in the supporting groove, a submarine pipeline is arranged in the groove, and the supporting groove adopts a semi-surrounded structure to support the submarine pipeline; the supporting groove is located above the seabed, the bottom faces of the two ends of the supporting groove are in smooth transition connection with the seabed, a reserved seabed passage is formed by the space between the supporting groove and the seabed, ocean currents can flow in the reserved seabed passage, and therefore, scouring to the seabed is reduced. The submarine pipeline suspension inhibition device has the advantages that secondary construction canbe avoided, suspension is avoided, and time and labor are saved.

Description

technical field [0001] The present invention relates to the technical field of ocean engineering, in particular to a suspension suppressing device for submarine pipelines. Background technique [0002] Submarine pipelines play an important role in the transportation of oil and natural gas. Submarine pipelines are mostly buried in the seabed when they are laid. However, due to the irregularity of the seabed and the impact of ocean current erosion, the pipeline is prone to suspending, which will lead to lateral instability of the pipeline, induce vortex-induced vibration, reduce the fatigue life of the pipeline, and cause damage to the pipeline. At present, the treatment of pipeline suspension is mainly through sand bag stacking, piling fixing and artificial aquatic weed covering and other methods. These methods have the characteristics of large workload, long construction period, and large load on pipelines. Contents of the invention [0003] According to the above-mentio...

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Problems solved by technology

[0003] According to the above-mentioned proposals, the current treatment of pipeline suspension is mainly through sand bag stacking, pile fixing and artificial aquatic plant covering. Suspension suppression device for submarine pipeline

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