The invention relates to the technical field of vibration and noise reduction, and provides a broadband water tank vibration absorber and a ship power system. The broadband water tank vibration absorber comprises a tank body and partition plates, the tank body is used for storing fluid, the partition plates are arranged in the tank body to divide the tank body into a plurality of containing cavities, and at least one plane of each partition plate is provided with an acoustic black hole structure. The box body is divided into the multiple containing cavities through the partition plates, the acoustic black hole structures are arranged on at least one plane of each partition plate, vibration energy is gathered in the acoustic black hole structures and dissipated through interaction of the partition plates and liquid, and therefore the purposes of reducing vibration and weakening sound wave transmission are achieved; when fluid in the box body passes through the acoustic black hole structure, the acoustic black hole structure is similar to a ball socket structure in fluid mechanics, a turbulent flow effect is generated on the fluid, flowing of liquid is enhanced, the damping effect of the liquid is improved, and vibration is effectively restrained. The acoustic-fluid-solid coupling effect is utilized for vibration reduction, vibration reduction in the broadband range can be achieved, and the acoustic-fluid-solid coupling vibration reduction device is suitable for various working conditions.
本发明涉及减振降噪技术领域,提供一种宽频带水箱吸振器及船舶动力系统。宽频带水箱吸振器包括:箱体和隔板,箱体用于储存流体,隔板设于箱体内,以将箱体分为多个容纳腔,隔板的至少一个平面上设有声学黑洞结构。本发明通过隔板将箱体分成多个容纳腔,每个隔板的至少一个平面上设有声学黑洞结构,振动能量在声学黑洞结构中聚集,通过隔板与液体的相互作用被耗散,从而达到减小振动和弱化声波传递的目的;箱体内的流体经过声学黑洞结构时,声学黑洞结构类似于流体力学中的球窝结构,对流体产生扰流作用,增强液体的流动,增加液体的阻尼效应,有效抑制振动。本发明利用声‑流‑固的耦合作用进行减振,可实现宽频带范围内的减振,适用于多种工况。
Broadband water tank vibration absorber and ship power system
宽频带水箱吸振器及船舶动力系统
2024-08-09
Patent
Electronic Resource
Chinese
Ship vibration absorber with auxiliary force
Tema Archive | 1987
|Variable-damping dynamic vibration absorber and ship deck
European Patent Office | 2022
|Dynamic vibration absorber based on particle damping and ship
European Patent Office | 2024
|