The invention provides a sound absorption and insulation sheet for maintaining ecology of a passenger cabin of a ship, which comprises an arc-shaped composite sheet, the arc-shaped composite sheet is formed by pressing a plurality of noise reduction materials, the cross section of the arc-shaped composite sheet is arc-shaped, and a plurality of sound absorption grooves tangent to the arc surface are formed in the outer end of the arc-shaped composite sheet; a sound direction adjusting piece and a sound absorption device are sequentially arranged in the sound absorption groove in the depth direction from the end, close to a groove opening, of the sound absorption groove. The sound absorption device comprises an elastic film layer, a metal mass block, composite fiber layers, and a movable cover body; wherein the elastic film layer is arranged in the sound absorption groove and divides the sound absorption groove into an outer cavity and an inner cavity, the metal mass block is arranged in the center of the elastic film layer, and the composite fiber layers are bonded to the two sides of the elastic film layer through viscous-state damping glue, and the movable cover body is connected with the outer edges of the composite fiber layers and can define a rear cavity. Through the invention, the influence of low-frequency noise on the interior of the passenger cabin is effectively reduced, and effective sound absorption and insulation treatment can be performed on noise with high penetrating power and other noise with low penetrating power.
本发明提供了一种用于维护船舶客舱生态的吸声隔音片,包括:弧形复合片,所述弧形复合片采用多种降噪材料压制成型,且横截面呈弧形,所述弧形复合片靠外端开设有若干与弧面相切的吸音槽;所述吸音槽内自靠近槽口的一端沿深度方向依次设有声向调节片,吸声装置;所述吸声装置包括:设置于所述吸音槽内且将所述吸音槽分割为外腔体与内腔体的弹性薄膜层,设置于所述弹性薄膜层中央的金属质量块,通过粘流态阻尼胶料粘接与所述弹性薄膜层两侧的复合纤维层,与所述复合纤维层的外边缘相接并能够围合形成后腔的活动罩体。通过本发明的公开,有效降低了低频噪音对客舱内的影响,能够以穿透力高的噪音为主,并对其他穿透力低的噪音做有效的吸声隔音处理。
Sound absorption and insulation sheet for maintaining ecology of passenger cabin of ship
一种用于维护船舶客舱生态的吸声隔音片
28.01.2022
Patent
Elektronische Ressource
Chinesisch
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