Study on explosion characteristics and mechanism of petroleum volatile gas

The explosion characteristics and explosion mechanism of petroleum volatile gas were studied by 20 L spherical explosion experiment and gas explosion flame propagation experiment. The results show that with the increase of the equivalent ratio, the peak explosion pressure and the maximum explosion pressure rise first and then decline. When the equivalent ratio is 1.2, the explosion pressure reaches the maximum. Under different equivalent ratio conditions, the flame propagation trend shows “N” type, and the propagation speed is the fastest when the equivalent ratio is 1.0. During the test of petroleum volatile gas explosion in a closed container, the effect of heat loss on the test results should not be ignored.