舰船纵倾均衡移水过程瞬态噪声控制试验研究

摘要

本文模拟建立了舰船纵倾均衡移水试验系统,对不同移水压力、电液球阀启闭时间、管路固定方式等条件下移水过程中的瞬态噪声进行研究.结果表明:纵倾移水过程的瞬态噪声值呈曲线波动状态,最大振动加速度级和最大空气噪声值均发生在电液球阀关闭过程中,随着移水压力的增加,最大噪声值逐渐增大;电液球阀快速关闭时,移水管路存在明显的水锤现象,延长电液球阀的关闭时间,可以有效抑止系统水锤的冲击,降低移水过程中最大瞬态噪声值;移水管路采用弹性支撑方式,可有效降低移水管路的振动噪声.%The simulation experiment system of warship trim balance moving water was established in this paper.The transient noise in the process of moving water is studied under different of pressure of moving water,the opening and closing time of the electro-hydraulic ball valve and the fixed mode of the pipeline.The results show that the transient noise value in the process of moving water is in a curve wave state.The maximum vibration acceleration and the maximum value of air noise are all occurred in the course of electro-hydraulic ball valve closing.With the increase of pressure of moving water,the maximum noise is gradually increased.When the electro-hydraulic ball valve is closed quickly,there is a clear water hammer in the water transfer pipeline.Prolonging the closing time of the electro-hydraulic ball valve can effectively restrain the impact of water hammer and reduce the maximum noise.The elastic support method can effectively reduce the vibration noise in the process of moving water.