粉尘爆炸超压及响应研究  

Research on Overpressure and Response Time of Dust Explosion

作　　者：郑秋雨[1] 孙永强[1] 王旭[1] 刘意 曲芳[1] 

机构地区：[1]沈阳航空航天大学安全工程学院,辽宁沈阳110136 [2]中国兵器工业导航与控制技术研究所,北京100089

出　　处：《电气防爆》2017年第2期1-4,共4页Electric Explosion Protection

基　　金：校青年人才启动基金(No.16YB05)

摘　　要：为进一步研究粉尘在密闭空间内的爆炸特性参数,采用1.2L哈特曼管作为爆炸主体装置,加载德国进口Omar系列压力传感器,在大气条件下对不同浓度的玉米淀粉和镁粉进行了一系列实验,测得玉米淀粉和镁粉的最大爆炸压力和响应时间,并对其影响因素进行分析。结果表明,随着玉米淀粉和镁粉浓度的增加,最大爆炸压力随之增大,响应时间由短变长,达到一定浓度后又逐渐缩小再延长,并且镁粉相对于玉米淀粉的响应时间更短,爆炸压力更大。In order to investigate the explosion parameters of dust in the sealed container, the maximum explosion pressure and response time of two kinds of dust at different concentrations under atmospheric conditions through a series of experiments by 1.2L Hartmann tube explosion test unit with Germany Omar type pressure sensor installed. The main results show that with the increasing of the concentration of magnesium powder and corn starch, explosion pressure increases rapidly and response time increases firstly and then declines when under certain concentration, subsequently enhances again. Compared with corn starch, response time of magnesium powder is shorter and its o- verpressure is higher.

关 键 词：粉尘爆炸 1.2L哈特曼管 最大爆炸压力 响应时间 

分 类 号：X932[环境科学与工程—安全科学] O389[理学—流体力学]