荷电细水雾抑制瓦斯爆炸实验研究

为了研究荷电细水雾对瓦斯爆炸的抑制效果以及抑爆机理,根据静电感应原理,自行设计了小尺寸的荷电细水雾发生装置,并开展了荷电细水雾抑制瓦斯爆炸的实验研究。实验分析了在不同荷电极性、荷电电压以及雾通量下,荷电细水雾对瓦斯爆炸压力和火焰传播速度的影响。结果表明:荷电细水雾较普通细水雾能更有效地降低瓦斯爆炸压力峰值以及火焰传播速度,且随着荷电电压的增大,荷电细水雾的抑爆效果显著增强。同时荷负电荷的细水雾较荷正电荷的细水雾抑爆效果更好。当荷电电压为8 k V时,荷电细水雾使瓦斯爆炸压力峰值下降64.7%,升压速率下降33.03%,火焰传播速度下降34.9%。

Experimental study on inhibiting the gas explosion by charged water mist

In order to study the inhibiting effect of charged water mist on gas explosion and the mechanism of explosion suppression，according to the principle of electrostatic induction，the small size generator of charged water mist was designed，and the inhibition of gas explosion by the charged water mist was experimentally investigated.The influence of speed and pressure on gas explosion was investigated under the charged water mist with the different charged polarity，charged voltage，and mist flux.The experimental results show that the charged water mist can effectively reduce the pressure peak of gas explosion and the propagation speed of flame than normal water mist，and with the increase of the charged voltage，the inhibiting effect of charged water mist on gas explosion is significantly enhanced.The negatively charged water mist has a better inhibitory effect on gas explosion than the positively charged water mist.When the charged voltage is 8 kV，the value of gas explosion pressure peak was reduced by 64.7%，the rate of pressure rise was reduced by 33.03%，and the propagation speed of flame was reduced by 34.9% under the charged water mist.