| 对旋轴流局部通风机叶片断裂原因分析与改进 |
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| 引用本文： | 贺秋冬,龚曙光,丁涛. 对旋轴流局部通风机叶片断裂原因分析与改进[J]. 机械工程学报, 2011, 47(24) |
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| 作者姓名： | 贺秋冬 龚曙光 丁涛 |
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| 作者单位： | 1. 孝感学院计算机与信息科学学院 孝感432000
2. 湘潭大学机械工程学院 湘潭411105 |
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| 摘 要： | 通过建立有限元分析模型,对矿用对旋轴流式局部通风机叶轮进行应力、变形分析,分析出大机型叶片断裂的主要原因是叶轮结构与尺寸不合理,叶轮高速旋转时叶片根部的应力过大、安全系数过低.据此提出在叶片根部局部增加厚度的方法解决了该问题.同时,还对叶轮结构进行改进,减少了材料消耗,提高整机性能.样机试验及现场应用表明,改进后通风机叶轮的机械强度和刚度满足要求,叶轮质量减小20.8％,噪声降低2.31 dB,振动速度有效值降低1.5 mm/s,全压效率略有提高,稳定运行区域更广.该分析方法在同类产品中有应用的可能性.
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| 关 键 词： | 有限元分析 通风机 轴流叶轮 强度 应力 变形 |
Analyses on Blade Fracture of Contra-rotating Axial Fan for Mine Local Ventilator and Its Improvement Measures |
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| HE Qiudong , GONG Shuguang , DING Tao. Analyses on Blade Fracture of Contra-rotating Axial Fan for Mine Local Ventilator and Its Improvement Measures[J]. Chinese Journal of Mechanical Engineering, 2011, 47(24) |
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| Authors: | HE Qiudong GONG Shuguang DING Tao |
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| Affiliation: | HE Qiudong1 GONG Shuguang2 DING Tao1(1.College of Computer and Information Science,Xiaogan University,Xiaogan 432000,2.School of Mechanical Engineering,Xiangtan University,Xiangtan 411105) |
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| Abstract: | A finite element method pattern is built and the stress and deforming of contra-rotating axial fan impeller for mine local ventilator are analyzed.The reasons of blade fracture of larger type fans are the unreasonable structure and size of impeller,overpower stress of impeller root and over-low coefficient of safety as impellers rotate at high speed.The improvement measures are to increase the thickness of local impeller root and to improve the structure of impeller so as to reduce material consumption and ... |
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| Keywords: | Finite element method Ventilator Axial impeller Strength Stress Deformation |
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