煤炭工程 ›› 2014, Vol. 46 ›› Issue (6): 61-63.doi: 10.11799/ce201406022

• 生产技术 • 上一篇    下一篇

局扇噪声源产生机理及降噪技术研究

于强   

  1. 郑州煤电股份有限公司告成煤矿
  • 收稿日期:2013-07-06 修回日期:2013-08-25 出版日期:2014-06-10 发布日期:2014-06-16
  • 通讯作者: 于强 E-mail:13522705743@139.com

Local fan noise source to generate analysis and silencing technology research and application

  • Received:2013-07-06 Revised:2013-08-25 Online:2014-06-10 Published:2014-06-16

摘要:

分析了FBD系列矿用隔爆型压入式对旋轴流局部通风机噪声产生机理和原有的降噪措施后,根据对旋轴流风机主要噪声源和噪声频率的特征,在尽可能不改变外形安装尺寸和结构设计的前提下,提出新的局部通风机降噪方案,经过大量的实验研究,通过在进风口采用侧进风结构设计,改变进风路线,取得了良好的效果,风机进口噪音降低15分贝以上。

关键词: 局部通风机, 噪声, 消音, 研究

Abstract:

Analyze of the FBD series flameproof push-rotating axial local fan noise generation mechanism and original noise reduction measures, mainly based on the rotating axial fan noise sources and noise frequency characteristics, in as much as possible change the installation dimensions and structural design of the premise, put forward a new local fan noise reduction scheme, after a large number of experimental studies, by using the side air intake inlet structure design, changing the inlet line, and achieved good results, fans imports more than 15 dB noise reduction.