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首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >Experimental Study on the Noise Characteristics Regarding Axial Auxiliary Fans and the Noise Reduction Performance of Mufflers
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Experimental Study on the Noise Characteristics Regarding Axial Auxiliary Fans and the Noise Reduction Performance of Mufflers

机译：关于轴向辅助风扇的噪声特性的实验研究及消声器的降噪性能

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摘要

High-intensity noise not only hurts body and mental health ofworkers, but also covers sound signs of accidence. To increase the sound absorption and noise reduction performance of axial auxiliary fan noise silencers, the noise strength and frequency distribution of the ambient medium casing of an FBYNo3.0/2.2 (Ⅱ) axial auxiliary fan were investigated. The noise characteristics at the inlets and outlets were analyzed. Based on this study, a new auxiliary fan bell-type muffler was designed, and its noise elimination ability was tested. The results showed that on the surface of the auxiliary fan casing, the noise intensity exhibited a “V” font distribution in that the maximum noise intensity was located in the air outlet and the minimum noise intensity was located in the middle part of the fan. Mid- and low-frequency noise was presented primarily at the outlets. However, intermediate- and high-frequency noise was presented primarily at the inlets. The muffler performance test revealed that the installation of a muffler can dramatically reduce the intensity of the auxiliary fan’s noise. The mean decrease in noise intensity for various positions was 14 dB (A). The noise elimination rate of the muffler was over 15%. This decreased level of noise was less than the Chinese national standard for maximum noise intensity, 85 dB (A). In addition, optimizing the noise frequency of the inlets and outlets by decreasing the intermediate- and high-frequency noise of the inlets and the intermediate- and low-frequency noise of the outlets can lead to the greatest noise reduction.
机译：高强度噪音不仅伤害了工作者的身体和心理健康，而且还涵盖了声音的声音。为了提高轴向辅助风扇噪声消声器的吸声和降噪性能，研究了FBYNO3.0 / 2.2（Ⅱ）轴向辅助风扇的环境介质壳体的噪声强度和频率分布。分析了入口和出口处的噪声特性。基于这项研究，设计了一种新的辅助风扇钟型消声器，并测试了其噪声消除能力。结果表明，在辅助风扇壳体的表面上，噪声强度表现出“V”字体分布，因为最大噪声强度位于空气出口中，并且最小噪声强度位于风扇的中间部分。中频和低频噪声主要在出口处呈现。然而，中间和高频噪声主要在入口处呈现。消声器性能测试显示，消声器的安装可以显着降低辅助风扇噪声的强度。各个位置的噪声强度的平均降低为14dB（a）。消声器的噪音消除率超过15％。这种降低的噪音水平小于中国国家标准，用于最大噪声强度，85 dB（a）。另外，通过减少入口的中间和高频噪声以及出口的中间和低频噪声来优化入口和出口的噪声频率，可以导致最大的降噪。

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  • 作者

    Cheng Zhai; Zongqing Tang; Quanle Zou; Lei Qin;

  • 作者单位

    Key Laboratory of Coal Methane and Fire Control Ministry of Education China University of Mining and Technology Xuzhou China State Key Laboratory of Coal Resources and Safety Mining Xuzhou 221116 Jiangsu China School of Safety Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    Key Laboratory of Coal Methane and Fire Control Ministry of Education China University of Mining and Technology Xuzhou China State Key Laboratory of Coal Resources and Safety Mining Xuzhou 221116 Jiangsu China School of Safety Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    Key Laboratory of Coal Methane and Fire Control Ministry of Education China University of Mining and Technology Xuzhou China State Key Laboratory of Coal Resources and Safety Mining Xuzhou 221116 Jiangsu China School of Safety Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    Key Laboratory of Coal Methane and Fire Control Ministry of Education China University of Mining and Technology Xuzhou China State Key Laboratory of Coal Resources and Safety Mining Xuzhou 221116 Jiangsu China School of Safety Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Axial auxiliary fan; Air inlet; Air outlet; Noise distribution; Spectrum analysis; Muffler;

    机译：轴流辅助风扇;空气入口;出风口;噪声分布;频谱分析;围巾;

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