In order to further improve the suppression efficiency of water mist on methane explosion

a small-scale experiment platform was set up to inhibit methane explosion using water mist. The NaCl additive was introduced to the ordinary water mist

and then charge the water mist containing NaCl additive to carry out experimental study on suppressing flame propagation of methane explosion using charged water mist containing NaCl additive. The experimental results show that the inhibition effect of charged water mist containing NaCl additive on methane explosion flame propagation is better than that the sum of inhibition effect when NaCl additive and charging effects act individually in nomal water mist. With the increase of NaCl concentration and charge voltage

the flame propagation velocity of methane explosion is obviously reduced. The secondary peak of the flame propagation velocity of methane explosion is decreased by 10.747 m·s-1 compared with that of ordinary water mist

and the drop radio up to 60.26% when the charge is 8 kV and the concentration of NaCl is 12.5%; The secondary peaks of the load of 8 kV and NaCl concentration of 12.5% decrease by 5.177 and 5.247 m·s-1 respectively

and the sum of the two decreases is 10.424 m·s-1. The analysis considered that there exists a coupling effect between the NaCl additive and the charging effect in the process of suppressing the flame propagation of the methane explosion by the water mist.