隔爆水幕对瓦斯爆炸传播规律影响的试验研究

发布时间：2018-03-26 16:33

本文选题：隔爆水幕　切入点：瓦斯爆炸　出处：《中国安全生产科学技术》2017年11期

【摘要】：为研究自制隔爆水幕抑制瓦斯爆炸的有效性,采用大直径瓦斯爆炸试验管道系统,在不同瓦斯浓度和不同水幕流量条件下进行瓦斯爆炸试验,利用数据采集系统测量瓦斯爆炸特性参数并对其变化规律和隔爆效果进行分析。结果表明:瓦斯浓度9.5%时经过隔爆水幕抑制作用,瓦斯爆炸压力峰值由64 k Pa下降到39 k Pa,衰减了39%;温度峰值由969 K下降到498 K,衰减了49%;速度最大值由136 m/s下降到73 m/s,衰减了15%。虽然隔爆水幕对不同浓度瓦斯产生的爆炸起到良好的抑制效果,但隔爆之后的传播规律依然受到瓦斯浓度影响。隔爆水幕对瓦斯爆炸的抑制效果取决于喷水流量的大小,随着流量的增加,水幕的隔爆效果增强,喷头最佳的工作流量为16.4 L/min。
[Abstract]:In order to study the effectiveness of self-made flameproof water curtain in suppressing gas explosion, a large diameter gas explosion test pipeline system was used to carry out gas explosion test under different gas concentration and different water curtain flow rate. The characteristic parameters of gas explosion were measured by data acquisition system, and its variation law and flameproof effect were analyzed. The results showed that the gas concentration was inhibited by flameproof water curtain when the gas concentration was 9.5. The peak value of gas explosion pressure decreased from 64 KPA to 39 KPA, which attenuated 39 KPA; the temperature peak decreased from 969 K to 498 K, attenuating 49; and the maximum velocity decreased from 136 m / s to 73 m / s, which attenuated 15%, although the flameproof water curtain produced different concentrations of gas. The explosion has a good inhibitory effect, However, the propagation law is still affected by the gas concentration. The suppression effect of the flameproof water curtain on the gas explosion depends on the size of the water spray flow. With the increase of the flow rate, the flameproof effect of the water curtain is enhanced, and the optimum working flow rate of the sprinkler is 16.4 L / min.
【作者单位】：辽宁工程技术大学安全科学工与程学院;矿山热动力灾害与防治教育部重点实验室;辽宁工程技术大学煤炭资源安全开采与洁净利用工程研究中心;
【基金】：国家自然科学基金项目(51274115) 辽宁省教育厅基金项目(551610001276,L2012122)
【分类号】：TD712.7

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