Bound floating pipeline towing pipe method process

Abstract

The invention relates to a bound floating pipeline towing pipe method. In the method, a floating pipe is used for replacing a buoy in the prior bound buoy towing pipe method, the specification of the floating pipe comprises a plurality of segments of cylinders, each segment is 50m in length and is an independent sealed bin, a plurality of supporting ribbed plates and longitudinal ribbed plates are welded inside, an air valve and a water valve are arranged for marine load adjustment, every two segments are connected through an inner flange, and a towing head is respectively arranged at both ends of the whole body. The invention has the advantages that the problem of size limitation for a process pipe in the bound buoy towing pipe method is solved, and the requirement for sea conditions is also greatly broadened; meanwhile, the problem that a frock pipe can not be reclaimed in a bunched pipeline towing pipe method is also solved, so that a floating pipe device can be repeatedly utilized, and the construction cost of submarine pipeline laying is further lowered.

Description

technical field [0001] The invention belongs to the innovation of a construction method for laying long-distance submarine pipelines in marine engineering. Background technique [0002] At present, for long-distance submarine pipelines, if a pipe-laying ship is used to lay them, the days of mobilization and demobilization of the ship are often longer than the days of pipe-laying. From the perspective of saving engineering investment, the pipe laying method is often adopted, and it is difficult to realize independent pipe laying operations. [0003] The pipe laying methods of non-pipe-laying ships include: lashing buoy pipe dragging method, bundled pipe dragging method. [0004] The lashing buoy dragging method uses buoys tied on the pipeline to provide the buoyancy of the pipeline. During the towage, the wave and current forces are borne by the pipeline itself. This towing process is only suitable for small-sized sea pipes. When the strength of the pipeline meets the requ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages that the tooling pipes cannot be recovered in the method of dragging the bundled pipelines and are greatly affected by the sea conditions in the method of dragging the tubes with tying buoys, the present invention provides a new pipeline laying method, which uses floating tubes to tie the dragging tubes, Bind the process pipe to the floating pipe that is equal to or slightly longer than it. The floating pipe not only provides buoyancy for the pipeline, but also acts as an external tooling pipe, so that the wave and flow force on the process pipe is borne by the floating pipe. When the process After the pipe is sunk, the floating pipe can be disassembled and recycled for reuse, further reducing the construction cost of submarine pipeline laying

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