Marine noise reduction structure

A noise-reducing, marine-used technology, applied to hulls, hull decks, hull panels, etc., can solve the problems of poor vibration and noise absorption, noise pollution, and weak effects, and achieve enhanced water vapor barrier effects and corrosion resistance Effects of performance improvement, vibration and noise reduction

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] At present, the connections of ship accommodation structures are all rigid connections, which cannot effectively reduce the vibration and noise generated when the equipment is running. The pendant and the low groove are transmitted to the wall and ceiling, which will cause strong vibration and serious noise pollution in the cabin of the ship, which seriously affects the life of the crew in the cabin. It does not meet the IMO and EU regulations on the noise value of the ship cabin. Living for a long time will seriously affect the physical and mental health of the cabin crew
In addition, although the floating refractory deck covering structure on the lower deck can achieve a certain effect of shock absorption and noise reduction, the effect is very small. Its effect of absorbing vibration and noise is not good, and it is difficult to reduce the vibration and noise transmitted by the hull structure to IMO and EU regulations on the noise value of ship cabins

Method used

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  • Marine noise reduction structure

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Effect test

Embodiment 1

[0015] Such as figure 1 As shown, a marine noise-reduction structure, on a horizontal steel deck 01, hollow special-shaped glass fiber cloth 02, aluminum foil 03 and dressing layer 04 are sequentially laid.

[0016] In this marine noise reduction structure, the steel deck 01 has high hardness and strength. The hollow special-shaped glass fiber cloth 02 laid on the steel deck 01 is a triangular or pentagonal hollow fiber cloth, and the thickness after multi-layer composite is 10mm. Then heat-press composite it with the hollow special-shaped glass fiber cloth 02 by polyethylene hot-air bonding method, and the thickness of the aluminum foil 03 is 8 μm. Then brush a layer of inorganic adhesive on the aluminum foil 03, and finally lay the dressing main body, wherein the inorganic adhesive layer is 0.5mm, and the main dressing layer is 40mm. The main body of the dressing is the ultra-light dressing produced by Taicang Lanyan Deck Dressing Coating Co., Ltd.

[0017] Referring to t...

Embodiment 2

[0019] The marine noise reduction structure is the same as that of Example 1, except that the hollow special-shaped glass fiber cloth 02 laid on the steel deck 01 is a triangular or pentagonal hollow fiber cloth, and the thickness after multilayer composite is 9mm. Then heat-press composite it with the hollow special-shaped glass fiber cloth 02 by polyethylene hot-air bonding method, and the thickness of the aluminum foil 03 is 8 μm. Then brush a layer of inorganic adhesive on the aluminum foil 03, and finally lay the dressing main body, wherein the inorganic adhesive layer is 0.5mm, and the dressing main body layer is 45mm.

[0020] Referring to the GB / T19889.10-2006 standard, the prepared marine noise reduction structure was tested, and the sound insulation weighted index was 46dB.

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Abstract

The invention provides a marine noise reduction structure. A hollow special-shaped glass fiber cloth, an aluminum foil and a dressing layer are sequentially laid on a horizontal steel deck. By virtue of adopting a composite structure, vibration and noises of a ship can be greatly weakened or eliminated. The hollow glass fiber cloth has the advantages of non-combustible property, verminproof property, heat resistance, corrosion resistance, high strength, high sound absorption coefficient and the like. Due to the aluminum foil, the corrosion resistance of a material is greatly improved, the water vapor obstruction effect is enhanced, the tensile strength is better, and the veneering is relatively stiff, smooth and flat; the dressing layer comprises an inorganic binder and a dressing main body and can be used for effectively protecting the deck and achieving antirust and antiwear effects.

Description

technical field [0001] The invention relates to a ship deck structure, in particular to a ship noise reduction structure. Background technique [0002] According to the requirements of the International Maritime Organization (IMO) and the European Union for the noise value in the cabin of a ship, the volume cannot exceed 55 decibels. Once it exceeds 55 decibels, it will have a negative impact on the daily life of the crew. At present, there are many kinds of equipment in the engine room of the ship. These devices will generate vibration and a lot of noise during operation, which will seriously affect the working environment in the engine room, the living environment of the living quarters on the deck adjacent to the engine room and other living environments on board. Therefore, In the process of ship repairing, it is necessary to design the shock-absorbing and noise-reducing structure of the ship's steel deck. [0003] At present, the connections of ship accommodation struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/68B63B3/48
Inventor 俞成丙杨丹殷雯青李秦龙胡季华陈赛赛
Owner SHANGHAI UNIV
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