Test and Analysis on the Effect of Elbow Guide Vanes on Diffusion Efficiency of Main Fan Vertical Diffuser
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摘要: 以山西省四老沟矿直立扩散器为参照，开展扩散器模型试验，研究弯头导叶结构对直立扩散器扩散效率的影响规律。针对原装置存在的弯头处阻力过大的问题，设计了一种新型导流叶片弯头。试验结果表明：与安装原有弯头相比，安装了新型导流板弯头的扩散器，其回收动压效率显著提升。研究结果对矿井主要通风机的高效运行可起到指导作用。Abstract: Taking the vertical diffuser of Silaogou Coal Mine in Shanxi Province as a reference, the model test of diffuser was carried out to study the influence of elbow guide vane structure on the diffusion efficiency of diffuser. In order to solve the problem of excessive resistance at the elbow of the original device, a new elbow device equipped with guide vanes was designed. The test results show that recovery dynamic pressure efficiency of diffuser with guide vanes at new elbow is significantly improved compared with that with original elbow. The research results play a guiding role on the efficient operation of mine main fan.
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Keywords:
- mine ventilation /
- vertical diffuser /
- model test /
- elbow guide vane /
- diffusion efficiency
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