The invention relates to a low-noise sea chest device which comprises a sea chest serving as a main body frame, a grating door is arranged on the side, close to a ship body, of the sea chest, an inner chest partition plate is fixedly arranged in the middle of an inner cavity of the sea chest, and inner chest reinforcing ribs are arranged on the side, away from the ship body, of the inner cavity of the sea chest. The inner side wall of the seabed box is fixedly connected with a sound absorption wedge; and the porous medium material is laid on the plate wall surfaces of the partition plates in the box and the reinforcing ribs in the box. According to the equipment provided by the embodiment of the invention, the underwater sound absorption material can be a porous medium material, a sound absorption wedge and the like, and noise can be effectively absorbed. Wherein water flow can permeate into the porous medium material, large-scale vortexes are prevented from being generated, the reinforcing rib plate machine partition plate is prevented from being directly impacted by the water flow, noise can be effectively reduced, the sound absorption wedges belong to polyurethane base materials, sound waves can oscillate back and forth between the wedges, sound energy consumption is increased, and the efficient noise elimination effect is achieved.
本申请涉及一种低噪声海底门装置,包括:作为主体框架的海底箱,所述海底箱靠近船体的一侧设有格栅门,所述海底箱的内腔中部固定设有箱内隔板,且在所述海底箱的内腔远离船体的一侧设有箱内加强筋,所述海底箱的内侧壁固定连接有吸声尖劈;多孔介质材料,所述多孔介质材料敷设在箱内隔板和箱内加强筋的板壁面上。本申请实施例提供的该设备,水下吸声材料可以是多孔介质材料、吸声尖劈等,可以对噪声进行有效吸收。其中多孔介质材料水流可以渗入,避免产生大尺度漩涡,避免加强筋板机隔板直接被水流冲击,可以有效降噪,其中吸声尖劈属于聚氨酯类基体材料,可以使声波在尖劈之间来回振荡,增大声能量消耗,具有高效的消声效果。
Low-noise sea chest device
一种低噪声海底门装置
2024-01-02
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
Device Assists Cardiac Chest Compression
Online Contents | 1995
Device Assists Cardiac Chest Compression
NTRS | 1995
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