| 高输送气流速度下竖直管道内物料的运动分析 |
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| 引用本文： | 张业明,岳红伟,李珂,陈永安.高输送气流速度下竖直管道内物料的运动分析[J].液压与气动,2018,0(10):54-58. |
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| 作者姓名： | 张业明 岳红伟 李珂 陈永安 |
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| 作者单位： | 河南理工大学机械与动力工程学院， 河南焦作454003 |
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| 基金项目： | 国家自然科学基金（51505133）；河南省科技攻关项目（172102310674）；河南省重点教研项目（2017SJGLX039） |
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| 摘 要： | 分析在稀相气力输送中，输送气流速度超出最佳经济速度时，物料在竖直管道中的运动情况，并提出一种在输送气流速度大于最佳经济速度时，增加气流速度以加快输送物料的解决方法。利用Fluent软件对其进行仿真模拟分析，并对不同入口气流速度对物料运动的影响进行研究分析。结果表明：在高输送气流速度下，物料在给定高度竖直管道中一直处于加速状态，且在入口处加速度较大，随着运动高度的增加，加速度逐渐减小；在物料粒径和管道内径不变时，改变入口处气流速度，物料的运动速度随着入口气流速度的增大而增大，同时管道内的压力损失也随着增大。
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| 关 键 词： | 气力输送 竖直管道 Fluent 气流速度 物料运动速度 |
| 收稿时间： | 2018-06-04 |
Motion Analysis of Material in Vertical Pipe Under High Transport Airflow Velocity |
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| ZHANG Ye-ming,YUE Hong-wei,LI Ke,CHEN Yong-an.Motion Analysis of Material in Vertical Pipe Under High Transport Airflow Velocity[J].Chinese Hydraulics & Pneumatics,2018,0(10):54-58. |
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| Authors: | ZHANG Ye-ming YUE Hong-wei LI Ke CHEN Yong-an |
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| Affiliation: | School of Mechanical and Dynamic Engineering, Henan Polytechnic University， Jiaozuo, Henan454003 |
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| Abstract: | Movement of material in vertical pipeline is analyzed when the velocity of air flow exceeds the optimum economic speed in dilute phase pneumatic conveying, and a method is proposed for accelerating transportation of materials after increasing airflow speed which is greater than the best economic speed. A simulation analysis is carried out by the software Fluent, and the influence of different inlet air velocities on material movement is studied and analyzed. The results show that: under a high speed of conveying air, the material in vertical pipeline is always in an accelerating state with a given height, and the acceleration is larger at the entrance, and the acceleration decreases with the increase of height of movement; with particle diameter and inner diameter of pipelines being constant, the velocity of material increases with the increase of inlet air velocity, meanwhile, the pressure loss in pipeline also increases. |
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