近年来,在不少工矿企业中,气流噪声对职工健康危害很大,也污染环境。如何控制噪声,已成为需要解决的一个重要问题。据了解,国内外不少单位都采用消声器控制噪声,并取得了较好的成绩。 从目前看,消声器是控制气流噪声通过管道往外传播的一种有效设备。在空气动力性机械进出口气 In recent years, in many industrial and mining enterprises, the airflow noise is very harmful to workers’ health and pollutes the environment. How to control the noise has become an important issue to be solved. It is understood that many units at home and abroad have adopted muffler noise control and achieved good results. At present, the muffler is an effective device for controlling airborne noise to be transmitted out of the pipe. Import and export of gas in aerodynamic machinery