彩跑粉基料的爆炸特性实验研究
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摘要
为研究彩跑粉基料的爆炸特性,实验采用20 L近球形的爆炸系统,从粉尘云浓度、点火延迟时间和初始点火能量3个方面对其进行了实验研究。结果表明:随着初始点火能的增大,彩跑粉基料的最大爆炸压力也会随之增大,初始点火能量的增加会导致彩跑粉基料爆炸威力显著增强;随着点火延迟时间的增加,彩跑粉基料的最大爆炸压力会先增大后减小,存在最佳点火延迟时间,可使彩跑粉基料最大爆炸压力达到峰值,70 g·m~(-3)彩跑粉基料的最佳点火延时是60ms,对应的最大爆炸压力为0. 128 MPa;随粉尘云浓度的增大,彩跑粉基料的最大爆炸压力先增加后减小,彩跑粉基料的爆炸下限浓度为55 g·m~(-3),存在某一浓度,使彩跑粉基料的最大爆炸压力达到峰值,在190 g·m~(-3)浓度时,彩跑粉基料爆炸威力最猛烈,最大爆炸压力达0. 368 MPa.
In order to study the explosion characteristics of the staple material of color run powder,the explosion characteristic parameters of the staple material of color run powder were studied from three aspects: dust cloud concentration,ignition delay time and initial ignition energy using a 20 L nearspherical explosion experimental system. The results show that with the increase of the initial ignition energy,the maximum explosion pressure of the staple material of color run power also increases,and has a significant enhancement of the staple material of color run powder to explosion power; with the increase of ignition delay time,the maximum explosion pressure increases first and then decreases,and there is an optimum ignition delay time which can reach the maximum explosion pressure of the staple material of color run powder,the optimum ignition time of 70 g·m~(-3) of the staple material of color run powder is 60 ms and the maximum explosion pressure is 0. 128 MPa; with the increase of dust cloud concentration,the maximum explosion pressure increases first and then decreases,and the lowest explosive concentration of the staple material of color run powder is 55 g·m~(-3). At the concentration of 190 g·m~(-3),the most intense explosion occurs and the maximum explosion pressure of the staple material of color run powder is 0. 368 MPa.
In order to study the explosion characteristics of the staple material of color run powder,the explosion characteristic parameters of the staple material of color run powder were studied from three aspects: dust cloud concentration,ignition delay time and initial ignition energy using a 20 L nearspherical explosion experimental system. The results show that with the increase of the initial ignition energy,the maximum explosion pressure of the staple material of color run power also increases,and has a significant enhancement of the staple material of color run powder to explosion power; with the increase of ignition delay time,the maximum explosion pressure increases first and then decreases,and there is an optimum ignition delay time which can reach the maximum explosion pressure of the staple material of color run powder,the optimum ignition time of 70 g·m~(-3) of the staple material of color run powder is 60 ms and the maximum explosion pressure is 0. 128 MPa; with the increase of dust cloud concentration,the maximum explosion pressure increases first and then decreases,and the lowest explosive concentration of the staple material of color run powder is 55 g·m~(-3). At the concentration of 190 g·m~(-3),the most intense explosion occurs and the maximum explosion pressure of the staple material of color run powder is 0. 368 MPa.
引文
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[15] ZHANG H,Chen X,ZHANG Y. Effects of particle size on flame structures through corn starch dust explosions[J]. Journal of Loss Prevention in the Process Industries,2017,50:7-14.
[16] Chen T,Zhang Q,Wang J X,et al. Flame propagation and dust transient movement in a dust cloud explosion process[J]. Journal of Loss Prevention in the Process Industries,2017,49:572-581.
[17]潘峰,马超,曹卫国,等.玉米淀粉粉尘爆炸危险性研究[J].中国安全科学学报,2011,21(7):46-51.PAN Feng,MA Chao,CAO Wei-guo,et al,Research on explosion risk of corn starch dust[J]. China Safety Science Journal,2011,21(7):46-51.
[18]中华人民共和国国家质量监督检验检疫总局. GB/T16425-1996粉尘云爆炸下限浓度测定方法[S].北京:中国标准出版社,1997.General Administration of Quality Supervision,Inspection and Quarantine of the People’s Republic of China.GB/T 16425-1996,determination for minimum explosive concentration of dust cloud[S]. Beijing:Standards Press of China,1997.
[19]袁旌杰,伍毅,陈瑜,等.点火延迟时间对粉尘最大爆炸压力测定影响的研究[J].中国安全科学学报,2010,20(3):65-69.YUAN Jing-jie,WU Yi,CHEN Yu,et al. Effect of ignition delay time on measurement of maximum explosion pressure of dusts[J]. China Safety Science Journal,2010,20(3):65-69.
[20] EN 14034-3,Determination of explosion characteristics of dust clouds-part 3:determination of the lower explosion limit LEL of dust clouds[S]. English:CEN/TC305,2004.
[2]邓军,屈姣,王秋红,等.烟煤煤尘云最低着火温度实验研究[J].矿业安全与环保,2014,41(6):13-15.DENG Jun,QU Jiao,WANG Qiu-hong,et al. Experimental study on minimum ignition temperature of bituminous coal dust cloud[J]. Mining Safety and Environmental Protection,2014,41(6):13-15.
[3]王秋红,孙金华,文虎,等.垂直管道中锆粉云火焰传播速度特性及锆颗粒群燃烧模型[J].北京理工大学学报,2015,35(4):351-356.WANG Qiu-hong,SUN Jin-hua,WEN Hu,et al. Characteristics of flame propagation speed of zirconium dust cloud in vertical pipeline and model of the zirconium particles combustion[J]. Transactions of Beijing Institute of Technology,2015,35(4):351-356.
[4]王秋红,孙金华,邓军.管道中锆粉云火焰传播的温度与速度特性[J].北京科技大学学报,2014,36(10):1378-1383.WANG Qiu-hong,SUN Jin-hua,DENG Jun. Flame temperature and propagation speed characteristics of zirconium dust cloud flame propagation in pipelines[J]. Journal of University of Science and Technology Beijing,2014,36(10):1378-1383.
[5]蒯念生,黄卫星,袁旌杰,等.点火能量对粉尘爆炸行为的影响[J].爆炸与冲击,2012,32(4):432-438.KUAI Nian-sheng,HUANG Wei-xing,YUAN Sheng-jie,et al. Influence of ignition energy on dust explosion behavior[J]. Explosion and Shock Waves,2012,32(4):432-438.
[6]谭汝媚,张奇,张博.点火延迟时间对铝粉爆炸特性参数的影响[J].爆炸与冲击,2014,34(1):17-22.TAN Ru-mei,ZHANG Qi,ZHANG Bo. Effects of ignition delay time on characteristic paremeters of aluminum dust explosion[J]. Explosion and Shock Waves,2014,34(1):17-22.
[7]尉存娟,谭迎新,路旭,等.点火延迟时间对铝粉爆炸压力的影响研究[J].中北大学学报:自然科学版,2009,30(3):257-260.WEI Cun-juan,TAN Ying-xin,LU Xu,et al. Effects of the ignition delay time on the explosion pressure of aluminum dust[J]. Journal of North Central University:Natural Science Edition,2009,30(3):257-260.
[8] Jiang H,Bi M,Li B,et al. Combustion behaviors and temperature characteristics in pulverized biomass dust explosions[J]. Renewable Energy,2018,122:45-54.
[9] Wang P,Wang H,Li S,et al. A study on the pressure and rate of pressure rise in energetic material dusts[J].Acta Armamentarii,1995(3):59-63.
[10] Polka M,Salamonowicz Z,Wolinski M,et al. Experimental analysis of minimal ignition temperatures of a dust layer and clouds on a heated surface of selected flammable dusts[J]. Procedia Engineering,2012,45(3):414-423.
[11]李好,张锬,杜兵,等.充氮环境下淀粉爆炸特性的实验研究[J].消防科学与技术,2016,35(2):166-170.LI Hao,ZHANG Tan,DU Bing,et al. Experimental investigation of starch dust explosion characterision atmosphere[J]. Fire Science and Techonology,2016,35(2):166-170.
[12]黄丽媛.石松子粉粉尘爆炸特性研究[D].南京:南京理工大学,2014.HUANG Li-yuan. Reserch on dust explosion characteristics of lycopodium[D]. Nanjing:Nanjing University of Science and Technology,2014.
[13] Zhang Q,Zhang B. Effect of ignition delay on explosion parameters of corn dust/air inconfined chamber[J].Journal of Loss Prevention in the Process Industries,2015,33:23-28.
[14]曹卫国,郑俊杰,彭于怀,等.玉米淀粉粉尘爆炸特性及火焰传播过程的试验研究[J].爆破器材,2016,45(1):1-6.CAO Wei-guo,ZHENG Jun-jie,PENG Yu-huai,et al.Experimental study on explosion characteristics and flame propagation process of corn starch dust[J]. Explosive Materials,2016,45(1):1-6.
[15] ZHANG H,Chen X,ZHANG Y. Effects of particle size on flame structures through corn starch dust explosions[J]. Journal of Loss Prevention in the Process Industries,2017,50:7-14.
[16] Chen T,Zhang Q,Wang J X,et al. Flame propagation and dust transient movement in a dust cloud explosion process[J]. Journal of Loss Prevention in the Process Industries,2017,49:572-581.
[17]潘峰,马超,曹卫国,等.玉米淀粉粉尘爆炸危险性研究[J].中国安全科学学报,2011,21(7):46-51.PAN Feng,MA Chao,CAO Wei-guo,et al,Research on explosion risk of corn starch dust[J]. China Safety Science Journal,2011,21(7):46-51.
[18]中华人民共和国国家质量监督检验检疫总局. GB/T16425-1996粉尘云爆炸下限浓度测定方法[S].北京:中国标准出版社,1997.General Administration of Quality Supervision,Inspection and Quarantine of the People’s Republic of China.GB/T 16425-1996,determination for minimum explosive concentration of dust cloud[S]. Beijing:Standards Press of China,1997.
[19]袁旌杰,伍毅,陈瑜,等.点火延迟时间对粉尘最大爆炸压力测定影响的研究[J].中国安全科学学报,2010,20(3):65-69.YUAN Jing-jie,WU Yi,CHEN Yu,et al. Effect of ignition delay time on measurement of maximum explosion pressure of dusts[J]. China Safety Science Journal,2010,20(3):65-69.
[20] EN 14034-3,Determination of explosion characteristics of dust clouds-part 3:determination of the lower explosion limit LEL of dust clouds[S]. English:CEN/TC305,2004.