高压物理学报Issue(2)：183-190,8.DOI:10.11858/gywlxb.2014.02.008
喷粉压力及点火延迟时间对粉尘爆炸参数的影响
Influence of Dispersion Pressure and Ignition Delay Time on the Dust Explosion Parameters
摘要
Abstract
Dust explosion experiments were carried out in a 5 L closed cylindrical vessel using corn-starch dispersed with compressed air and ignited by high-voltage spark,for further study of the factors which affect the dust explosion parameters.With different dispersion pressure,the influence of ignition delay time on the pressure parameters of dust explosion was studied,and the experimental results were analyzed theoretically.The results show that the influence of ignition delay time on explosion pressure and rise rate of pressure is significant,a critical value of dispersion pressure is found.When dispersion pressure is higher than the critical pressure,there is an optimum ignition delay time,making the explosion pressure and pressure rise rate maximal.With the increasing of dispersion pressure,the optimum ignition delay time decreases.When dispersion pressure is lower than the critical pressure, the pressure of dust explosion rises as the ignition delay time increases.关键词
粉尘爆炸/吹粉压力/点火延迟时间/爆炸压力/压力上升速率/玉米淀粉Key words
dust explosion/dispersion pressure/ignition delay time/explosion pressure/rise rate of pressure/cornstarch分类
数理科学引用本文复制引用
张博,张奇,谭汝媚..喷粉压力及点火延迟时间对粉尘爆炸参数的影响[J].高压物理学报,2014,(2):183-190,8.基金项目
国家自然科学基金项目 （）
