基于正交模拟试验的矿用空气幕结构优化

发布时间：2018-03-18 01:03

本文选题：安全工程　切入点：矿用空气幕　出处：《安全与环境学报》2015年06期 　论文类型：期刊论文

【摘要】：为了降低空气幕的能耗,依据空气动力学理论,建立了以双三次方曲线为整流器外轮廓线的矿用空气幕模型,采用正交模拟试验方法,以出风口速度分布均匀性及阻力损失为评价指标,研究了不同结构参数下矿用空气幕内流场分布规律,计算出矿用空气幕出风口断面的速度分布均匀性参数及压力损失,得到了最优的矿用空气幕结构模型,该模型风流速度均匀性参数为0.038 5,压力损失为98.3 Pa。结果表明,压力漩涡的大小及流速滞留区的范围与整流器密切相关。对矿用空气幕出风口速度分布均匀性影响最大的是供风器出风口宽度,其次为导流体中截面半径;对矿用空气幕压力损失影响最大的是供风器出风口宽度,其次为整流器及供风器长度。当导流体为圆锥体时,矿用空气幕的性能最优。
[Abstract]:In order to reduce the energy consumption of air curtain, based on the aerodynamics theory, a mine air curtain model with double cubic curve as the outer contour of rectifier is established, and the orthogonal simulation test method is used. Taking the velocity distribution uniformity and resistance loss of air outlet as evaluation indexes, the distribution law of flow field in mine air curtain under different structural parameters is studied, and the velocity distribution uniformity parameters and pressure loss of air curtain outlet section are calculated. The optimal model of mine air curtain structure is obtained. The uniformity parameter of air flow velocity is 0.038 5, and the pressure loss is 98.3 Pa. the results show that, The size of pressure whirlpool and the range of velocity retention area are closely related to the rectifier. The width of the outlet of the air supply unit is the most important influence on the uniformity of the velocity distribution at the outlet of the mine air curtain, followed by the radius of the section in the diversion body. The main influence on the pressure loss of mine air curtain is the width of the outlet of the air feeder, followed by the rectifier and the length of the air feeder. When the diversion body is a cone, the performance of the air curtain for the mine is the best.
【作者单位】：江西理工大学江西省矿业工程重点实验室;
【基金】：江西省教育厅科技项目(GJJ13401)
【分类号】：TD724

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