化工进展2018，Vol.37Issue(1)：23-31,9.DOI:10.16085/j.issn.1000-6613.2017-0809
开口率和点火源类型对汽油蒸气泄压爆炸内场超压荷载的影响
Effect of vent size and the ignition source type on the internal overpressure loading of vented gasoline-air mixture explosion
摘要
Abstract
The gasoline vapor venting explosion experimental system was established,and a series of tests were conducted to investigate the effects of opening rate and the ignition type on the internal overpressure loadings during the process of vented explosion. The results showed that during vent explosion proeess,the multi overpressure peaks phenomenon appeared,and the maximum overpressure peak was caused by the burst of the vent cover. With the increase of the vent size,the value of P1 decreases linearly,the value of P2decreases exponentially,the intensity of R-T instability and the duration of Helmholtz oscillation increases. The value of maximum overpressure peak and average rate of pressure rise size was affected by ignition source type. The value of maximum overpressure and the average rate from large to small was high temperature ignition rod,powder ignition source,ignition spark,open firing point. The flame structure included an outer flame front and an inner flame core,and the proportion of the two structures was affected by the type of ignition source.关键词
汽油蒸气/燃料/爆炸/超压/安全/Helmholtz振荡/点火源Key words
gasoline vapor/fuel/explosion/overpressure/safety/Helmholtz oscillation/ignition source分类
资源环境引用本文复制引用
王世茂,杜扬,李国庆,齐圣,韦世豪,李蒙..开口率和点火源类型对汽油蒸气泄压爆炸内场超压荷载的影响[J].化工进展,2018,37(1):23-31,9.基金项目
国家自然科学基金(51276195)及重庆市研究生科研创新项目(CYB17150). （51276195）
