一,事故经过我车间3号150M~3/h制氧机所配活塞式膨胀机为PZKl4．3/45-6型,系杭州制氧机厂1982年产品,一直正常使用。1994年1月20日上午10时许,突然发生活塞头与活塞体断裂飞出。据当班同志讲,活塞头断裂前只听得“咚,咚”两下(关阀门来不及),随即“(?)”的一声,只见冷箱及矿棉被冲出,散落 First, the accident through my workshop on the 3rd 150M ~ 3 / h oxygen plant equipped with piston expander PZKl4.3 / 45-6 type, Hangzhou oxygen plant 1982 products, has been the normal use. January 20, 1994 at 10 am, suddenly broke the piston head and piston body fly out. According to class comrades, before the piston head rupture only heard “boom, boom” twice (off the valve too late), then “(?)” I heard cold boxes and mineral wool was washed out, scattered