输送管道内低浓度瓦斯爆炸抑制试验
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摘要
自动喷粉抑爆装置是低浓度瓦斯管道输送的重要安全保障设备之一。运用内径500 mm爆炸管道研究自动喷粉抑爆装置对输送管道内低浓度瓦斯爆炸传播的抑制效果,并分析其抑爆机理。结果表明:抑爆效果受抑爆装置安装位置的影响很大,火焰传感器与抑爆器的最小安装距离为20 m。爆炸火焰在抑爆器后方需传播一定距离才能被完全扑灭,存在一个区间和时间的过程。冲击波压力峰值由于产气剂喷射压力的抵消和ABC干粉灭火剂的抑制作用发生衰减,但衰减幅度相对较小。
Automatic powder explosion suppression device is one of the important safety equipment for the low concentration gas pipeline. We research automatic powder anti- explosive device for transporting the inhibitory effect of pipeline in the low concentration of gas explosion propagation with 500 mm explosion pipe,and the explosion suppression mechanism were analyzed. Results show that the automatic powder explosion suppression device suppression effect is greatly affected by the mounting position; the minimum installation distance between flame sensor and explosion suppression is 20 m. The explosion flame behind the explosion suppression device must spread a certain distance and can be completely extinguished,there is a range and time of the process. Shock pressure peak due to the inhibitory effect of producing a gas- injection pressure off and ABC ultrafine powder extinguishing agent is attenuated,but the decay rate is relatively small.
Automatic powder explosion suppression device is one of the important safety equipment for the low concentration gas pipeline. We research automatic powder anti- explosive device for transporting the inhibitory effect of pipeline in the low concentration of gas explosion propagation with 500 mm explosion pipe,and the explosion suppression mechanism were analyzed. Results show that the automatic powder explosion suppression device suppression effect is greatly affected by the mounting position; the minimum installation distance between flame sensor and explosion suppression is 20 m. The explosion flame behind the explosion suppression device must spread a certain distance and can be completely extinguished,there is a range and time of the process. Shock pressure peak due to the inhibitory effect of producing a gas- injection pressure off and ABC ultrafine powder extinguishing agent is attenuated,but the decay rate is relatively small.
引文
[1]霍春秀.煤矿瓦斯输送管道爆炸事故分析与探讨[J].矿业安全与环保,2014,41(1):91-94.
[2]AQ 1076—2009矿低浓度瓦斯管道输送安全保障系统设计规范[S].
[3]薛少谦.抑制瓦斯煤尘爆炸传播的主动喷粉抑爆技术[J].煤矿安全,2013,44(7):66-69.
[4]刘德奇.瓦斯输送管道爆炸自动喷粉抑爆技术[J].煤炭技术,2014,33(5):49-51.
[5]张延松,李润之,茅晓辉.低浓度瓦斯安全输送系统装备研究[C]//中国职业安全健康协2009年学术年会论文集.北京:煤炭工业出版社,2009.
[6]仇锐来,张延松,司荣军,等.点火能量对瓦斯爆炸传播影响的实验研究[J].矿业安全与环保,2011,38(1):6-9.
[7]彭于怀,黄丽媛,曹卫国,等.石松子粉尘爆炸危险性及抑爆研究[J].爆破器材,2014,43(6):16-21.
[8]仇锐来,张延松,张兰,等.点火能量对瓦斯爆炸传播压力的影响实验研究[J].煤矿安全,2011,42(7):8.
[2]AQ 1076—2009矿低浓度瓦斯管道输送安全保障系统设计规范[S].
[3]薛少谦.抑制瓦斯煤尘爆炸传播的主动喷粉抑爆技术[J].煤矿安全,2013,44(7):66-69.
[4]刘德奇.瓦斯输送管道爆炸自动喷粉抑爆技术[J].煤炭技术,2014,33(5):49-51.
[5]张延松,李润之,茅晓辉.低浓度瓦斯安全输送系统装备研究[C]//中国职业安全健康协2009年学术年会论文集.北京:煤炭工业出版社,2009.
[6]仇锐来,张延松,司荣军,等.点火能量对瓦斯爆炸传播影响的实验研究[J].矿业安全与环保,2011,38(1):6-9.
[7]彭于怀,黄丽媛,曹卫国,等.石松子粉尘爆炸危险性及抑爆研究[J].爆破器材,2014,43(6):16-21.
[8]仇锐来,张延松,张兰,等.点火能量对瓦斯爆炸传播压力的影响实验研究[J].煤矿安全,2011,42(7):8.