大型水平管道中环氧丙烷-铝粉-空气混和物爆燃转爆轰的实验研究

陈默; 白春华; 刘庆明

doi:10.11858/gywlxb.2011.04.012

大型水平管道中环氧丙烷-铝粉-空气混和物爆燃转爆轰的实验研究

doi: 10.11858/gywlxb.2011.04.012

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

详细信息

通讯作者:
刘庆明

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出版历程
- 收稿日期: 2010-03-22
- 修回日期: 2010-05-06
- 刊出日期: 2011-08-15

Experimental Research of Deflagration to Detonation Transition of Epoxypropane-Aluminum-Air Mixtures in Large-Scale Tube

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Corresponding author: LIU Qing-Ming

摘要

摘要: 在长为32.4 m、内径为0.199 m的大型长直水平管道中，对环氧丙烷-空气两相流云雾及环氧丙烷-铝粉-空气三相流云雾的爆燃转爆轰（DDT）过程进行了实验研究。对弱点火条件下多相混和物DDT过程的不同阶段特征进行了分析，对比研究了不同浓度时混和物的燃爆情况。结果表明：浓度为513 g/m3的环氧丙烷-空气混和物及浓度为237和643 g/m3的环氧丙烷-铝粉-空气混和物均能在管道中完成爆燃向爆轰的转变，进入自持爆轰阶段，其胞格尺寸分别为0.28和0.50 m。
- 爆燃转爆轰 /
- 弱点火 /
- 环氧丙烷 /
- 铝 /
- 自持
Abstract: Motivated by the current interest in the mechanism of the deflagration to detonation transition (DDT), the DDT experiments of epoxypropane-air mixture and epoxypropane-aluminum-air mixture are carried out by a large-scale tube (32.4 m long and 0.199 inner diameter). The processes of DDT in multi-phase clouds are analyzed, and the mixtures with different concentrations are compared. The self-sustained detonation waves are formed in the epoxypropane-air mixture with epoxypropane concentration of 513 g/m3 and epoxypropane-aluminum-air mixture with epoxypropane and aluminum concentrations of 237 and 643 g/m3, and moreover the cell size of the detonation are 0.28 and 0.5 m, respectively.
- deflagration to detonation transition /
- weak ignition /
- epoxypropane /
- aluminum /
- self-sustained

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参考文献(13)

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