SDR阻尼复合减振降噪技术在锅炉风机系统降噪工程中的应用

在分析了电站锅炉送风机主要噪声源及频谱、噪声特性的基础上,应用噪声控制理论,设计并实施了噪声控制方案,达到了预期的治理效果。电站锅炉风机及管路系统均为中低频噪声,其特点为振动和空气流体混合噪声,噪声衰减慢,传播远。SDR型阻尼吸隔声材料为多层复合分子材料,内设不同孔径、孔型的声学结构。适用于风机、管道、球磨机等壳体结构的减振降噪。使用阻尼胶粘剂粘贴在声源设备壳体表面,辅加吸音棉材料和彩钢外壳约束固定。主要应用于电站锅炉一次风机、吸风机、送风机及其管道减振降噪方面。该技术的特点是在风机和管道等声源表面形成一个吸隔声体,使噪声在声腔内部被吸收和隔绝对外传播。

Application of SDR damping vibration technology in boiler fan noise reduction engineering

Based on the analysis of main noise source,frequency spectrum and noise characteristic of the forced draught blower,a noise control scheme using the control theory of the noise is proposed in this paper.Project results prove the effectiveness of proposed noise control strategy.Boiler fan and pipe system are in the low-frequency noise,vibration and air characterized by fluid mixing noise,noise attenuation slowly spread far.SDR Damping material for sound insulation in multi-layer composite absorbing molecular...