Ship noise reduction plate and preparation method thereof

Abstract

The invention provides a ship noise reduction plate and a preparation method. The ship noise reduction plate comprises a first metal plate, a first sound absorption and insulation composite plate, a second sound absorption and insulation composite plate, a third sound absorption and insulation composite plate and a second metal plate, which are sequentially connected in the longitudinal direction. The first sound absorption and insulation composite board comprises a plurality of first sound insulation parts and a plurality of first sound absorption parts; the second sound insulation composite board comprises a plurality of second sound insulation parts and a plurality of second sound absorption parts; the third sound absorption and insulation composite board comprises a plurality of third sound insulation parts and a plurality of third sound absorption parts; the first sound insulation part, the second sound absorption part and the third sound insulation part are longitudinally spliced; and the first sound absorption part, the second sound insulation part and the third sound absorption part are longitudinally spliced. The sound absorption and insulation composite board has the beneficial effects that the first sound absorption and insulation composite board, the second sound absorption and insulation composite board and the third sound absorption and insulation composite board are arranged at intervals through the sound absorption pieces and the sound insulation pieces in the transverse direction and the longitudinal direction, and independent noise reduction units are formed; according to the structure, the noise reduction effect is obviously better than that of a traditional noise reduction plate, and noise in different directions can be reduced.

Description

technical field [0001] The invention belongs to the field of ship board manufacturing, and in particular relates to a ship noise reduction board and a preparation method thereof. Background technique [0002] In shipbuilding, in order to reduce the impact of external source noise, noise reduction panels are generally used to reduce the impact of noise. Now the common structure of the noise reduction board adopts layers of steel plates, elastic materials with damping properties, and porous materials such as glass wool. , for absorption. [0003] It can be seen from the working principle that the superimposed structure can reduce ship noise on the basis of a single direction, but it is easy to deal with multi-directional noise. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides a ship noise reduction board and a preparation method thereof. [0005] The specific technical scheme is as follows: [0006] A noise...

AI Technical Summary

Problems solved by technology

Now the common structure of the noise reduction board adopts layers of steel plates, elastic materials with damping properties, and porous materials such as glass wool. , to absorb

[0003] It can be seen from the working principle that the superimposed structure can reduce ship noise on the basis of a single direction, but it is difficult to deal with multi-directional noise.

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