中文摘要：

为全面评估铝粉爆炸的危险性,在爆炸罐内进行了环境湿度对铝粉爆炸影响的实验研究。分别得到了33%、60%和90%相对湿度下铝粉爆炸的最大爆炸压力和最大压力上升速率值。结果表明：环境湿度对铝粉爆炸有显著的影响作用,而这种作用与浓度有关。当铝粉浓度较低时,随着环境湿度的增加,最大爆炸压力和最大压力上升速率值先增加后减小;而浓度较高时,最大爆炸压力和最大压力上升速率值则随着环境湿度的增加而明显增加。同时通过对实验数据的非线性拟合,得到了3种环境湿度下最大爆炸压力和铝粉浓度之间的DoseResp函数关系。该研究可作为铝粉爆炸危险性评估的参考。

英文摘要：

In order to assess the explosion risk of aluminum powder comprehensively,the influence of humidity on aluminum powder explosion is studied in a explosion tank.The maximum explosion pressure and the maximum pressure rise rate of aluminum powder explosion were obtained at the relative humidities of 33%,60% and 90%,respectively.It is shown that the relative humidity usually distinctively affects the probability of aluminum powder explosion,and the effect is related with dust concentration.When dust concentration is lower,with the increase in ambient humidity,the maximum explosion pressure and the maximum pressure rise rate first increase and then decrease;but when dust concentration is higher,the maximum explosion pressure and the maximum pressure rise rate are significantly increased with the increase of the ambient humidity.Meanwhile,based on the nonlinear fitting of experimental data,the DoseResp function between the maximum explosion pressure and aluminum powder concentration at different ambient humidity is obtained.