矿用对旋式轴流局部通风机降噪研究  

Research on Noise Reduction of Mine Contra-rotating Auxiliary Fan

作　　者：黄学满 

机构地区：[1]中煤科工集团重庆研究院,重庆400039

出　　处：《矿业安全与环保》2013年第4期43-45,49,共4页Mining Safety & Environmental Protection

摘　　要：分析了对旋式局部通风机的主要噪声源,指出了A声级对噪声评价的不足,并对对旋式局部通风机噪声频率进行了分析研究,根据各频段频谱特性,采用移频技术,合理设计消声器,达到了真正降噪的目的。In this paper,the deficiency of using A sound level for noise evaluation was pointed out and analysis was carried out on the noise frequency of the mine contra-rotating auxiliary fan.Based on the frequency spectrum characteristics of each band,a muffler was rationally designed with frequency shifting technology,and the true purpose of noise reduction was finally achieved.

关 键 词：对旋式局部通风机 噪声 频谱 移频 消声器 

分 类 号：TD441.2[矿业工程—矿山机电] TU834.36[建筑科学—供热、供燃气、通风及空调工程]