摘要
针对煤矿井下对旋轴流风机使用过程中存在噪音较大、风机内部流场复杂、噪音改善较为困难等问题,本文研究了井下对旋轴流风机的噪声及改善方法,介绍了对旋轴流风机的结构组成和工作原理,搭建了井下对旋轴流风机气动噪声机理的数学模型,利用流体仿真软件Fluent研究了对旋轴流风机噪声性能,提出了改善风机噪声的方案。结果表明,第二级叶轮位置处的噪声最大,整个风机的声压级和声强级随着转速的增加而增大,设计的穿孔叶片和弯掠叶片可以有效改善对旋轴流风机的气动性能和噪声性能,风机的全压有所下降,整体噪声水平下降,改善后的效果明显。
Aiming at the coal mine underground spin axial flow fan use process there is a large noise,fan internal flow field complexity,noise improvement is more dificult and so on,this paper studies the noise of underground spin axial flow fan and the improvement method,introduces the spin axial flow fan structural composition and working principle,builds the underground spin axial flow fan aerodynamic noise mechanism mathematical model,using fluid simulation software Fluent studied the spin axial flow fan noise performance,and put forwards the scheme to improve the noise of the fan.The results show that the second level impeller position at the largest noise,the fan sound pressure level and sound intensity level increases with the increase of the speed,the designed perforated blade and curved swept blade can effectively improve the aerodynamic performance and noise performance of the rotary axial flow fan,the full pressure of the fan is decreased,the overall noise level is decreased,and the improvement effect is obvious.
作者
吴孔坤
WU Kongkun(Shanxi Jiaomei Xishan Coal Electric Town Chengdi Mine,Taiyuan,Shanxi 030203,China)
出处
《自动化应用》
2023年第20期186-188,共3页
Automation Application
关键词
对旋轴流风机
噪声
穿孔叶片
弯掠叶片
rotary axial flow fan
noise
perforated blade
bent and swept blade
作者简介
吴孔坤,1987年生,助理工程师,从事煤矿通风区“一通三防”工作。
