对于所有化工厂和石油化工厂来说,产生噪音的设备和管道是常见的。实际上,在任何一生产厂,有些噪音确实是不可避免的,然而,使其达到最小既是可能也是办得到的。 例如,压缩机是令人讨厌的噪音产生者。加热器和空冷器亦如此,电动机、泵和汽轮机证明也很麻烦;控制阀也证明是麻烦事,控制阀也许是所有噪音源中最大噪音源。最后,所谓噪音控制消音器,其本身常常是噪音产生者。显然,这八个噪 Noise-generating equipment and piping are common to all chemical and petrochemical plants. In fact, some noise is indeed unavoidable in any manufacturing plant, however, minimizing it is both possible and achievable. For example, compressors are annoying noise generators. The same is true for heaters and air coolers, and motors, pumps and turbines prove troublesome; control valves also prove troublesome, and control valves are perhaps the largest source of noise among all noise sources. Finally, so-called noise-controlled silencers, which themselves are often noise generators. Obviously, these eight noises