A rockfall pipe riprap device for dealing with suspended spans of submarine pipelines

Abstract

The invention aims at providing a stone falling pipe stone dumping device for treating suspended spanning of a submarine pipeline. The stone falling pipe stone dumping device comprises a cylindrical carrier framework, a carrier top assembly, a pushing system, a stone falling guide opening, observing and communicating equipment and an auxiliary manipulator, wherein the tail end of a flexible stone falling pipe is butted with a middle stone falling passage of the stone dumping device; the stone falling pipe stone dumping device is hoisted by a umbilical cable, is lowered to the submarine part from a moon pool of a stone dumping ship, and is accurately positioned by the observing and communicating equipment and the positioning mechanism on the auxiliary manipulator, the auxiliary manipulator is used for clamping the submarine pipeline to enable the stone dumping device to be positioned above the submarine pipeline; the crushed stones are dumped into the stone falling pipe from the stone dumping ship, and enter the stone dumping device along the stone falling pipe, a guide plate at the bottom end of the stone dumping device is used for adjusting the dumping angles of the crushed stones, and the crushed stones are completely buried at the two sides of the submarine pipeline. The stone falling pipe stone dumping device is suitable for treating the suspended spanning of deep water pipelines, and is especially suitable for treating the suspended spanning of pipelines under different seabed soil states.

Description

technical field [0001] The invention relates to a suspension processing device for a submarine pipeline. Background technique [0002] Suspended span of submarine pipeline refers to the suspended section that appears on the submarine pipeline and does not directly contact the surface of the seabed. The appearance of suspended span of the pipeline may induce vortex-induced vibration of the pipeline, resulting in fatigue damage of the pipeline. In severe cases, it will lead to pipeline fracture, oil and gas Spillage, etc., not only bring huge economic losses to the oil company, but also have a very bad impact on the society, and cause serious pollution to the marine environment. [0003] At present, for submarine pipelines under construction / planned or completed, there are many methods to avoid or prevent overhangs at home and abroad. Sometimes only one method is used, and sometimes several methods are used in combination. For the proposed submarine pipeline, according to the...

AI Technical Summary

Problems solved by technology

At present, there is no specific disclosed technology for this stone throwing device and carrying a professional manipulator to assist in positioning and guiding the direction.

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