Uniform flow vortex-induced vibration simulation tester for seabed pipeline

A submarine pipeline and vortex-induced vibration technology, which is applied in the field of devices in the field of marine engineering technology, can solve problems such as the inability to truly simulate the uneven terrain environment of submarine pipelines, difficult vortex-induced vibration tests, and small test section distances. Simple, easy to assemble, easy to disassemble

Inactive Publication Date: 2011-08-10
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After analysis, the shortcomings of this test technology are: 1. Generally, it can only simulate the vortex-induced vibration of small-scale pipe fittings, and it is difficult to effectively carry out the vortex-induced vibration test under the actual Reynolds number.
2. Due to the

Method used

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  • Uniform flow vortex-induced vibration simulation tester for seabed pipeline
  • Uniform flow vortex-induced vibration simulation tester for seabed pipeline
  • Uniform flow vortex-induced vibration simulation tester for seabed pipeline

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 , figure 2 As shown, the present invention includes a simulated false bottom 2 arranged in the towing pool 1, the two ends of the simulated false bottom 2 are respectively slid to pass through the columns 3, and the top ends of the two columns 3 are respectively connected to the towing pool 1 through flanges. Trailer 4 above. The middle and lower parts of the two upright columns 3 are provided with an end support structure 5 respectively, and the two end support structures 5 are respectively connected to the corresponding shaft ends of the submarine pipeline model 6 . A measurement and analysis system (not shown in the figure) for collecting and measuring the motion and force of the submarine pipeline model 6 is arranged in the towing pool 1 .

[0021] Such as figure 2 , image 3 As shown, the simulated false bottom 2 in...

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Abstract

The invention relates to a uniform flow vortex-induced vibration simulation tester for a seabed pipeline. The invention is characterized in that the tester comprises a simulating false bottom which is arranged in a towing tank; both ends of the simulating false bottom are respectively and slidingly arranged in upright columns in a penetrating way; the top ends of the two upright columns are jointly connected and arranged on a towing truck above the towing tank; the middle-lower parts of the two upright columns are respectively provided with an end part supporting structure; the two end part supporting structures are respectively connected with corresponding shaft ends of a seabed pipeline model; and the towing tank is internally provided with a measuring and analyzing system. As the tester has ingenious structure, can place the seabed pipeline model in the towing tank, simulates vortex-induced vibration under uniform flow, can simulate real seabed conditions and the seabed pipeline with the actual size, the test time is longer, the tester can be widely applied to the vortex-induced vibration test process of the seabed pipeline.

Description

technical field [0001] The invention relates to a device in the technical field of marine engineering, in particular to a vortex-induced vibration simulation test device for a submarine pipeline model placed horizontally in a towing pool under uniform flow. Background technique [0002] If a columnar structure is placed in an incoming flow at a certain speed, alternate vortices will occur on both sides. Associated with the creation and discharge of vortices, the column is subjected to lateral and flow-wise pulsating pressures. If the column is elastically supported at this point, the pulsating fluid forces will induce vibrations in the column, which in turn will change the structure of its wake. This fluid-structure interaction problem is called vortex-induced vibration. For example, under the action of ocean currents, vortex-induced vibrations will appear on flexible pipes such as offshore platform risers, tow cables, submarine pipelines, spar platform buoys, mooring cabl...

Claims

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Application Information

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IPC IPC(8): G01M7/02G01M10/00
Inventor 贾旭杨建民徐阳付世晓矫滨田汪学锋邹星许亮斌沙勇
Owner CHINA NAT OFFSHORE OIL CORP
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