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Experimental device and method for simulating vortex-induced vibration characteristic of marine submarine pipeline

A technology for vortex-induced vibration and submarine pipelines, which is applied in the field of marine engineering and can solve the problems that the vibration coupling effect cannot be ignored, the marine environmental conditions cannot be simulated, and the coupled response of the vortex-induced vibration in the downstream direction is ignored.

Inactive Publication Date: 2020-12-22
龙晓丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The first type of device can only generate uniform flow or oscillating flow, and cannot simulate the actual marine environmental conditions; the second type of device ignores the coupling response of downstream to vortex-induced vibration, and existing studies have shown that small mass ratio pipes with a small mass ratio of downstream to vortex-induced vibration will It has a significant impact on the transverse vortex induced vibration, and the vibration coupling effect between the flow direction and the transverse direction cannot be ignored

Method used

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  • Experimental device and method for simulating vortex-induced vibration characteristic of marine submarine pipeline
  • Experimental device and method for simulating vortex-induced vibration characteristic of marine submarine pipeline
  • Experimental device and method for simulating vortex-induced vibration characteristic of marine submarine pipeline

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Embodiment 1

[0048] Such as Figure 1-9 As shown, according to the embodiment of the present invention, the experimental device for simulating the vortex-induced vibration characteristics of the ocean submarine pipeline includes a water tank 1 and a false bottom 2 located at the inner bottom of the water tank 1, and a false bottom 2 and the water tank 1 are provided There is a matching height adjustment mechanism 3, and the top of the false bottom 2 is provided with a laser emitter 4, and the top of the false bottom 2 is provided with a frame 5, and the top of the frame 5 is provided with a vertical slide bar 6 , the top of the water tank 1 is provided with a crossbeam 7 arranged horizontally, and the bottom end of the crossbeam 7 is provided with an elastic mechanism 8 connected with the vertical slide bar 6, and the two sides of the vertical slide bar 6 are respectively There are vertical pulley one 9 and vertical pulley two 10 arranged symmetrically, and the side of the vertical pulley ...

Embodiment 2

[0052] Such as Figure 1-9 As shown, the slide rail 40 is an arc structure, and both ends of the slide rail 40 are provided with a number of evenly distributed bumps, and one side of the bracket 47 is provided with a chute 48, and the slant The slot 48 is provided with a sliding shaft 42 matching it, and the top of the sliding shaft 42 is provided with a spring bar 43 correspondingly connected with the support bar one 33 and the support bar two 34, and the spring bar 43 is A three-stage telescopic structure, and the spring rod 43 is connected with the first support rod 33 and the second support rod 34 through the connecting shaft one, and the support 47 is respectively connected with the first support rod 33, the second support rod 34 through the second connecting shaft. The second support rod 34 is connected to the arc rod 32 .

Embodiment 3

[0054] Such as Figure 1-9 As shown, the top ends of the first support rod 33 and the second support rod 34 are provided with a connecting shaft three connected to the connecting plate 35, and the first movable block 24 and the second movable block 25 are provided with There is a thread groove matched with the threaded rod 26, and the oblique rod 28 is respectively connected with the movable block one 24, the movable block two 25 and the sliding block 30 through the connecting shaft four 44, the Both sides in the chute 36 are symmetrically provided with limit blocks that match the movable block one 24 and the movable block two 25, and the top of the false bottom 3 is provided with a light-transmitting plate that matches it, and the Described fixed support one 13 and described fixed support two 14 all are connected with described crossbeam 7 by fixed bolt 45 9. a kind of experimental device of simulating marine submarine pipeline vortex-induced vibration characteristic accordin...

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Abstract

The invention discloses an experimental device and method for simulating the vortex-induced vibration characteristic of a marine submarine pipeline. The device comprises a water tank and a false bottom located at the false bottom end, the top end of the false bottom is provided with the false bottom, the top end of the false bottom is provided with a laser emitter, the top end of the false bottomis provided with a frame, the top end of the frame is provided with a vertical sliding rod, a transverse beam is transversely arranged at the top end of the water tank, an elastic mechanism connectedwith the vertical sliding rod is arranged at the bottom end of the transverse beam, a first vertical pulley and a second vertical pulley are symmetrically arranged on the two sides of the vertical sliding rod respectively, and limiters are arranged on the sides, away from each other, of the first vertical pulley and the second vertical pulley respectively. The device has the beneficial effects that: with the experimental device, the blank that researchers carry out research on the two-degree-of-freedom vortex-induced vibration characteristics of the submarine pipeline under actual complex marine environment conditions is filled up, and physical model experiment working conditions under various actual complex marine environment conditions can be conveniently realized by utilizing the experimental device.

Description

technical field [0001] The invention relates to the technical field of marine engineering, in particular to an experimental device and method for simulating the characteristics of vortex-induced vibration of marine submarine pipelines. Background technique [0002] Because the submarine pipeline has been in the complex marine environment for a long time, the unevenness of the seabed itself and the erosion of the ocean current, the submarine pipeline often appears suspended, and the suspended section is subjected to environmental loads such as wave currents, which can easily cause vortex-induced vibration, which in turn leads to pipeline Fatigue damage will affect the life of the pipeline. Pipeline fatigue damage caused by vortex-induced vibration is the most common factor affecting pipeline safety, and it is also a key and difficult issue that the majority of submarine pipeline designers and researchers have been concerned about. [0003] At present, the research results on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/06G01M7/02G01M10/00
CPCG01M7/022G01M7/025G01M7/027G01M7/06G01M10/00
Inventor 龙晓丽
Owner 龙晓丽
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