基于响应面法的木粉尘最大爆炸压力试验研究——以桑木粉尘为例

发布时间：2018-03-07 11:59

本文选题：木粉尘　切入点：最大爆炸压力　出处：《中国安全生产科学技术》2017年06期 　论文类型：期刊论文

【摘要】：为研究粉尘质量浓度、粒径和点火延迟时间对木粉尘最大爆炸压力影响,以桑木粉尘为对象,利用1.2 L的Hartmann管进行试验。研究结果表明:最大爆炸压力随着粉尘质量浓度的增加先增大后减小,随着粉尘粒径的增大而减小,随着点火延迟时间的增大而增大。在单因素试验基础上,运用Design-Expert软件对Box-Behnken所设计的响应面试验方案分析,得到影响粉尘最大爆炸压力大小顺序为:点火延迟时间质量浓度粒径,同时Design-Expert软件预测出最危险爆炸强度的试验条件为:质量浓度840.24 g/m~3,粒径260目,点火延迟时间12 s,最大爆炸压力为0.511 775 MPa,经检验,拟合性较好,为防爆设备本质安全强度设计提供了一定的参考价值。
[Abstract]:In order to study the effect of dust concentration, particle size and ignition delay time on the maximum explosion pressure of wood dust, mulberry dust was taken as an object. The experimental results of 1.2L Hartmann tube show that the maximum explosion pressure increases first and then decreases with the increase of dust mass concentration, and decreases with the increase of dust particle size. With the increase of ignition delay time, on the basis of single factor test, the response surface test scheme designed by Box-Behnken was analyzed by using Design-Expert software. The order of the maximum explosion pressure was obtained as follows: mass concentration particle size of ignition delay time. At the same time, the test conditions of the most dangerous explosion intensity predicted by Design-Expert software are as follows: mass concentration 840.24 g / m ~ (3), diameter 260 mesh, ignition delay time 12 s, maximum explosion pressure 0.511 775 MPA. It provides a certain reference value for the intrinsically safe strength design of explosion-proof equipment.
【作者单位】：西安建筑科技大学材料与矿资学院;
【分类号】：X928.7

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