在对目前国内外抽出式局部通风机的结构、性能进行分析和比较的基础上．研制了FBDCNQ9．0／2×30型矿用防爆抽出式对旋轴流局部通风机。该机采用对旋轴流式结构，叶片材质采用低碳钢，具有材料成本低、无静电和不老化等优点。对通风机的运转部件——叶轮的强度和刚度进行了有限元分析与计算。样机试验及现场应用表明，研制的通风机最高静压效率达到70．35％，最高全压效率达到74．23％，比A声级噪声为17．6dB，产品安全可靠、运行平稳，有较好的综合性能。%Based on the analysis and comparison of domestic and foreign extractable local fan in structure and performance, mine extractable explosion-proof contra-rotating axial flow local fan FBDCNo9.0/2×30 was developed. The fan had the advantages of low cost, no static electricity and non-aging as it used the contra-rotating axial flow structure and low carbon steel blade. The strength and stiffness of the impeller were analyzed and calculated by a finite element method. Sample test and field application showed that the highest static pressure efficiency of the fan was 70.35%, the highest total pressure efficiency was 74.23%, A-class specific sound level was 17.6dB. The fan operated safely and reliably with good comprehensive performance.
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