轴流式风机的噪声是空气动力性噪声 ,电动机噪声 ,风机机械性噪声 ,扩散器出口噪声 ,检查门及风井漏气噪声等相互叠加的结果。对电机房和风机房的噪声分别采取隔声处理与加装吸声体相结合的方法降噪 ,对鼓风机厂自配扩散塔消声器出口噪声采取增加新消声器的方法降噪 ,取得了较好的降噪效果 ,综合声级达到环保要求 ,厂界噪声夜间实测只有 4 5dB。 Axial fan noise is aerodynamic noise, motor noise, fan mechanical noise, diffuser exit noise, check the door and the wind leakage noise and other superposition results. The noise of the motor room and the wind turbine room are respectively treated by the sound insulation and the installation of the sound absorption body to reduce the noise. The noise reduction of the self-made diffuser tower muffler outlet noise is increased by adding a new muffler, and a better noise reduction Noise reduction effect, the integrated sound level to meet environmental requirements, the factory noise at night measured only 4 5dB.