【作者】 许影博； 唐登海； 赵文峰；

【Author】 XU Ying-bo;TANG Deng-hai;ZHAO Wen-feng;China Ship Scientific Research Center;National Key Laboratory on Ship Vibration & Noise;Suzhou Hengqu Ocean Technology Co.,Ltd.;

【机构】 中国船舶科学研究中心； 船舶振动噪声重点实验室； 苏州恒驱海洋科技有限公司；

【摘要】 为了研究浸水电机水下噪声特性以及噪声控制方法,在循环水槽中对电机不同转速时的噪声进行了测量,并设计了隔声罩,对安装隔声罩后电机的噪声进行了测量,分析了电机噪声特性以及隔声罩的隔声性能。结果表明:电机噪声频谱以线谱成分为主,线谱频率以电机轴频的倍频为主要特征;安装隔声罩之后,在350Hz以上频段都有很好的隔声效果,最大隔声量在15dB以上,但是在350Hz以下频段,隔声罩会使噪声增加。更多还原

【Abstract】 In order to study the noise characteristics and noise control method,the noise of motor under different rotate speeds was measured in the large cavitation tunnel.The sound insulation device was designed and noise of motor with sound insulation device was measured,the noise characteristics of the motor and the sound insulation performance of the sound insulation device are analyzed.The results show that tone is the dominant of the noise spectrum of the underwater motor and the frequencies of the tone mainly are consistent with the multiplication of the motor shaft frequency.After installing the sound insulation device,it has a good performance of sound insulation at the frequency range from 350 Hz to 10000 Hz and the maximum sound insulation is more than 15 dB.The noise will be increased by sound insulation device at frequency range from 100 Hz to 350 Hz.更多还原