Composite type marine noise reduction structure

A composite, marine technology, applied in the direction of hull, hull paneling, hull components, etc., can solve problems such as difficulty in meeting IMO, achieve vibration and noise reduction, good sound insulation, and good adhesion.

Inactive Publication Date: 2014-07-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the existing structures in these positions in the ship structure are directly laid deck coverings on the steel plates, it is difficult to meet the requirements of the IMO regulations. Therefore, these existing structures must be modified to meet the requirements of the IMO regulations.

Method used

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  • Composite type marine noise reduction structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, a composite marine noise reduction structure, on a horizontal steel deck 01, a damping layer 02, a steel sheet or steel plate 03 and a coating layer 04 are sequentially laid.

[0017] Steel deck 01 has good hardness and high strength. The polyurea elastomer layer is directly laid on the steel deck 01 as the damping layer 02, and the flame-retardant spray polyurea elastic waterproof coating of the commercially available brand "Yuhong" SPUA-352 is selected, with a thickness of 4mm. After the polyurea elastomer is fully dried and cured, the damping adhesive is brushed, and the steel sheet or steel plate is bonded to the damping layer through the damping adhesive to obtain the steel sheet or steel plate layer 03. The damping adhesive used is a graft copolymer of methyl methacrylate (MMA) and chloroprene rubber (CR). When coating steel sheets or steel plates, the glue is applied three times, and the thickness of the glue layer is 0.15mm. Finally,...

Embodiment 2

[0020] The composite marine noise reduction structure is the same as that of Example 1, except that the polyurea elastomer layer is directly laid on the steel deck 01 as the damping layer 02, and the commercially available flame-retardant "Yuhong" SPUA-352 is selected. Type spray polyurea elastic waterproof coating with a thickness of 5mm. Graft copolymer of methyl methacrylate (MMA) and chloroprene rubber (CR), when coating steel sheets or steel plates, apply glue 3 times, and the thickness of the glue layer is 0.1mm. Lay the dressing layer 04, choose the ultra-light dressing produced by Taicang Lanyan Deck Dressing Coating Co., Ltd., and the thickness of this layer is 40mm.

[0021] With reference to the GB / T19889.10-2006 standard, the composite marine noise-reducing structure prepared was tested, and the sound insulation weighted index was 45dB.

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Abstract

The invention discloses a composite type marine noise reduction structure, wherein a damping layer, a steel sheet or a steel plate and a dressing layer are sequentially laid on a horizontal steel deck. The combined-type structure provided by the invention can be used for greatly reducing educe or eliminating noises. The damping layer has better adhesive force, the damping and vibration reducing performances are good, the composite type marine noise reduction structure is shockproof, salt spray-resistant, sea water-resistant, hot-cold alternation-resistant, and is green and environmental-friendly protection; since the steel sheet or steel plate has high unit area mass, the material is heavy or compact, therefore, the sound insulation effect is excellent; the dressing layer can effectively protect the deck, so as to achieve heat insulation and light effects.

Description

technical field [0001] The invention relates to a ship deck structure, in particular to a composite ship noise reduction structure. Background technique [0002] The 91st Maritime Safety Committee of the International Maritime Organization (IMO) passed a resolution on the amendment to the SOLAS Convention, which will take effect on July 1, 2014, requiring that the ship's structure should comply with the recently reviewed and approved "Noise Level Regulations on Board Ships" to protect personnel Protect from noise. This rule is applicable to new ships above 1600 tons, and the sound insulation between living quarters should be considered, so that even if activities such as music, conversation, loading and unloading are carried out in adjacent spaces, rest and entertainment can still be obtained. The rules specify the noise limit values ​​of different places, including the weighted sound insulation index from the living cabin to the living cabin is 35, the weighted sound insul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/68
Inventor 俞成丙杨丹李秦龙殷雯青胡季华陈赛赛
Owner SHANGHAI UNIV
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