1991年9月24日,河南省镇平县一名刚开办销售氧气业务的农民专业户曹某,因一氧气瓶阀有些漏气,便自行修理。他把氧气瓶平放于地面(瓶无防震圈),两腿夹着瓶体,时而还坐在瓶体上,面向瓶头进行拆卸。当将阀芯丝扣退到一定程度时,突然阀芯快速飞出,射进对面约7 m多远的一堵砖墙内。气瓶在气流反作用力的推动下,飞离曹某裤裆,撞击在后面 September 24, 1991, Zhenping County, Henan Province, has just started a sales of oxygen business farmers Cao, due to some oxygen cylinder valve leaks, they repair their own. He placed the oxygen bottle flat on the ground (bottle without shock ring), his legs sandwiched between the bottle, sometimes sitting on the bottle, facing the bottle head for disassembly. When the spool spool back to a certain extent, suddenly the spool quickly fly into the opposite side of about 7 m far into the depth of a brick wall. Cylinder gas stream in the reaction of the promotion, flying away from the crotch Cao, the impact in the back