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Turtle-shaped flexible submarine pipeline counterweight block

A technology for submarine pipelines and counterweights, which is used in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., and can solve problems such as poor stability, unfavorable pipeline stability, and low friction coefficient.

Pending Publication Date: 2018-10-19
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the general rectangular counterweight will increase the force of the water flow, which is not conducive to the stability of the pipeline.
The round counterweight has a small friction coefficient and is often used in trenches. For pipelines that do not dig trenches, the stability is not good

Method used

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  • Turtle-shaped flexible submarine pipeline counterweight block
  • Turtle-shaped flexible submarine pipeline counterweight block

Examples

Experimental program
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Embodiment Construction

[0008] The present invention will be described in detail below in combination with specific embodiments.

[0009] A turtle-shaped flexible subsea pipeline counterweight of the present invention such as figure 1 and figure 2 As shown, including the counterweight body 1, the counterweight body 1 is turtle-shaped, which can effectively reduce the lateral force of the water flow; the lower part of the counterweight body 1 is provided with several turtle feet 2, and the turtle feet 2 are provided with The protruding toe can be inserted into the seabed, which can effectively increase the lateral friction force and increase the lateral stability of the pipeline.

[0010] The weight body 1 is provided with a flexible pipeline channel 3, and the flexible pipeline channel 3 is covered with a rubber pad 4. The rubber pad 4 can increase the friction between the weight body 1 and the flexible pipe, and reduce the weight body 1 on the flexible pipe. slippage. The counterweight body 1 is...

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Abstract

The invention aims to provide a turtle-shaped flexible submarine pipeline counterweight block. The turtle-shaped flexible submarine pipeline counterweight block is characterized in that a counterweight block body is of a turtle back shape, and transverse acting force of the water flow can be effectively reduced by the turtle back shape; a plurality of turtle foot-shaped legs are arranged at the lower part of the counterweight block body, the turtle foot-shaped legs are provided with foot tips extending outwards, moreover, the foot tips can insert into the seafloor so that the transverse friction force can be increased, and the transverse stability of a pipeline can be increased; a flexible pipeline channel is formed in the counterweight block body, a rubber pad is covered in the flexible pipeline channel, friction between the counterweight block body and a flexible pipe is increased by the rubber pad, so that sliding of the counterweight block body on the flexible pipeline is reduced;and the counterweight block body is divided into a detachable upper block main body and a detachable lower block main body, the upper block main body and the lower block main body are connected through bolts, and when the upper block main body and the lower block main body are connected together through the bolts, the flexible pipeline channel is formed. The counterweight block has the beneficialeffects that the structure is simple, and the flexible pipeline channel can be laid in the seafloor stably.

Description

technical field [0001] The invention belongs to the technical field of submarine pipeline laying, and relates to a turtle-shaped flexible counterweight of a submarine pipeline. Background technique [0002] Flexible subsea pipelines, such as PE pipelines, have a lower relative density than seawater, and the pipeline will float even when it is full of water. Therefore, when laying flexible pipelines on the seabed, sufficient counterweights must be added to make them sink and be anchored at on the design route. For flexible pipelines that do not require trenching and burial, the pipeline will be affected by the force of water flow and wave force, which will make the pipeline more likely to float away from its position and lose its stability in place. The shape of the general rectangular counterweight will increase the force of the water flow, which is not conducive to the stability of the pipeline. The round counterweight has a small friction coefficient and is often used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/24
CPCF16L1/24
Inventor 李昌良张亚郇筱林于志猛
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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