华电技术 ›› 2019, Vol. 41 ›› Issue (1): 27-31.

• 研究与开发 • 上一篇    下一篇

基于反声降噪的风机管道流场优化与节能应用

  

  1. 1.神华国能哈密煤电有限公司,新疆哈密〓839000; 2.南京常荣声学股份有限公司,南京〓210000
  • 出版日期:2019-01-25 发布日期:2019-02-14

Flow field optimization and energy saving based on antinoise fan pipes

  1. 1.Shenhua Guoneng Hami Coal Power Company Limited,Hami 839000, China; 2.Nanjing Changrong Acoustic Incorporated,Nanjing 210000, China
  • Online:2019-01-25 Published:2019-02-14

摘要:

竖直进风管道本身具有一定的流场设计缺陷,增大了管道通风阻力,而为实现风机降噪所增设的进风消声器又进一步增大了风机能耗。采用反声降噪与流场优化相结合的方法对风机管道进行改进设计,使管道本身具有一定的消声性能,并通过改善管道流场,降低通风阻力,实现风机节能。数值分析及示范项目应用显示:管道反声降噪与流场优化改进后,消声节能管道能达到普通阻性消声器的消声效果,并能使风机效率提高10%以上。该种消声节能管道结构简单、环境适应性强、维护成本低,具有极好的推广应用前景。

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Abstract:

The vertical blast pipe has certain flow field design defect which results in the increase of draft loss. However, the muffler installed to reduce the noise accelerates the power consumption of fan. Improved design of fan pipes combines antinoise and flow field optimization, which makes pipe itself has a certain muffling performance. The energy saving of fan is achieved by improving the flow field of the pipe and reducing the draft loss. Numerical analysis and demonstration project application show that after the antinoise and flow field optimization of the fan pipe, the muffling energysaving pipe can achieve the muffling effect as ordinary mufflers,and increase the efficiency of the fan by more than 10%. This pipe has the advantages of simple structure,good environmental adaptability,low maintenance cost,excellent application and promotion prospects.

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