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A new type of vibration-absorbing mooring line and its general selection method

A mooring line and a new type of technology, applied in ships and other directions, can solve problems such as affecting the normal use function and life of the instrument, poor vibration damping performance, aggravating vibration, etc., to solve the problem of excessive vibration interference, ensure work stability and Reliability, the effect of improving vibration damping performance

Active Publication Date: 2022-06-17
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most mooring cables fail to accurately obtain their vibration characteristics, and then fail to take any vibration reduction measures, or fail to take accurate vibration reduction measures, which leads to poor vibration reduction performance and even aggravates the The generation of vibration affects the normal function and life of the instrument, and at the same time causes a waste of resources
[0005] Under the current technical conditions, there is no effective mooring cable and type selection method that can effectively assist in selecting the mooring cable with the best vibration damping performance under different sea current velocity conditions

Method used

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  • A new type of vibration-absorbing mooring line and its general selection method
  • A new type of vibration-absorbing mooring line and its general selection method
  • A new type of vibration-absorbing mooring line and its general selection method

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Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1 This embodiment provides a new type of vibration-damping mooring line, the structure of which is as follows: figure 1 and 2 As shown, it consists of a cable 1 and a vibration-damping brush 2 arranged on the cable 1 . Wherein, the vibration damping brush 2 is an annular annular brush, and the annular brush is fixed with the cable 1 by means of bundling, compression molding or sticking.

[0038] The structure of the anti-vibration brush 2 is as follows image 3 As shown, it consists of a base 4 and bristles 3 . The bristles 3 are hard bristles with a length of 30-60mm, and are fixed on the base 4 at equal intervals.

Embodiment 2

[0039] Embodiment 2 For the new vibration-damping mooring line of this embodiment, the vibration-damping brush can also be a ribbon brush, such as Figure 4 As shown, the ribbon-shaped brushes are helically wound around the cable 1 at equal intervals, and are fixed together with the cable 1 by means of bundling, compression molding or gluing.

[0040] Compared with the existing mooring line, the new vibration-damping mooring line of this embodiment has significant vibration-damping performance, which can significantly reduce the vibration of the line in the axial and radial directions, and reduce the impact on underwater instruments and equipment. .

Embodiment 3

[0041] Example 3 This implementation provides a general selection method for a new type of vibration-damping mooring line, taking the test of different bristle lengths of annular brushes as an example, specifically including:

[0042] (1) In a water flow environment with the same flow velocity (2 knots flow velocity), keep the arrangement distance C of the brush 2 on the cable 1 the same (the specific value of the arrangement distance is 30mm), and the arrangement distance B of the bristles 3 on the brush 2 ( The specific value of 15.7mm) is the same, the bristles 3 on the brush 2 are made of hard material, and the same cable length (the specific length value is 15 meters) is used to test the axial acceleration signals of the 30mm and 60mm lengths of the bristles 3. Comparison in the frequency domain.

[0043] The results are shown in Figures 5(a) and 6(a), in the time domain, the average amplitudes of acceleration in the axial and radial directions of the bristle cable with a ...

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Abstract

The invention relates to a mooring cable, in particular to a mooring cable with a vibration-reducing function and a general type selection method thereof. A novel vibration-damping mooring line includes a cable, and a vibration-damping brush is arranged on the cable. The vibration-damping brushes are belt-shaped or ring-shaped, and are fixed on the cables at equal intervals. The vibration-damping mooring cable of the present invention can change the flow state of the ocean current passing through the cable by arranging a brush structure on the cable, so as to reduce the vortex-induced vibration caused by the vortex after the cable is impacted by the current, and improve the vibration reduction of the mooring cable. Vibration performance, reducing the impact on underwater instruments and equipment. Through the general selection method of the present invention, mooring cables with the best vibration-reducing performance can be selected under different sea current velocities and cable lengths, so as to select mooring cables with different lengths under different sea current velocities and different lengths. The purpose of the best vibration reduction effect of the mooring cable, and then reduce the adverse effects of cable vibration on the instrument and equipment, and improve the working accuracy and service life of the instrument and equipment.

Description

technical field [0001] The invention relates to a mooring line, in particular to a mooring line with a vibration damping function and a general selection method. Background technique [0002] With the development of underwater resources, the detection, identification, communication and underwater environment detection of underwater targets, the development and use of various underwater and surface instruments and equipment are becoming more and more common. In the research and development process of instruments and equipment, the anti-vibration performance of various instruments and equipment is a very important indicator of whether the instruments and equipment can work normally. Whether on the surface or underwater, instruments and equipment often need to be fixed by mooring cables for recovery and positioning. [0003] In the prior art, the mooring rope is directly fixed on the equipment, the mooring rope itself has no vibration damping device and measures, and the moori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B21/20
CPCB63B21/20B63B2021/203
Inventor 王振郑轶杨群李红董正宁李冬
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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