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排气放空消声器常用于电力、化工、冶金、石油等工业部门以降低高压、高温及高速排气放空所产生的高强度噪声。此类排气噪声频谱宽、声级高、污染范围大,常见的阻性或阻抗复合式等消声器已不能适用,必须设计应用特殊的排气放空消声器,以保证厂区及城市环境的安静。本文简要介绍三种主要的排气放空消声器的原理、特点及设计计算方法,以供工程设计中参考。一、节流减压排气消声器节流减压排气消声器是利用多层孔板(或穿孔管)分级扩容减压,即将排气的总压降分散到各层节流孔板上,将压力突变排空变为压力渐变排空,并使通过各层孔板的流速控制在临
Exhaust muffler muffler used in power, chemical, metallurgical, oil and other industrial sectors to reduce high-pressure, high temperature and high-speed exhaust venting produced by high-intensity noise. Such a wide range of exhaust noise spectrum, high sound level, the scope of pollution, common resistive or impedance composite muffler has been unable to apply, you must design and application of special exhaust muffler to ensure quiet plant and urban environment. This article briefly introduces the principle, characteristics and design calculation methods of three main exhaust muffler for reference in engineering design. First, the throttling decompression exhaust muffler throttling decompression exhaust muffler is the use of multi-layer orifice (or perforated tube) grading expansion decompression, the total pressure drop is about to spread to the throttling orifice layers, will Pressure sudden change into a pressure gradient evacuation emptying, and through the layers of orifice plate flow rate control in Pro