论文部分内容阅读
本文对在一次炼油装置的火灾事故中,位于着火区的输油管道的穿孔原因进行了分析,指出当管子的温度超过850℃时,在管内的油中出现具有强渗碳性物质,密封的管路成了“渗碳炉”,对管内壁进行渗碳.强烈渗碳的结果导致钢的熔点下降,管内壁逐渐变为钢液流淌下来,以致在短短的2h内管壁迅速减薄,甚至穿孔.当发生类似情况时减薄从管内壁开始.检查时不易从外表发现内壁的破坏,因而必须对整段管线进行测厚必要时应解剖管子.
In this paper, the reasons for the perforation in the oil pipeline located in the fire zone during a fire accident in an oil refinery are analyzed. It is pointed out that when the temperature of the pipe exceeds 850 ° C, there appears a strong carburizing substance in the oil in the pipe. The sealed pipe The road became a “carburizing furnace”, carburizing the inner wall of the pipe, the result of intensive carburization resulted in the decrease of the melting point of the steel, the inner wall of the pipe gradually became the liquid flowing down, so that the wall of the pipe rapidly thinned in a short period of 2h, Even perforation.When a similar situation thinning from the inner wall of the tube.Inspection is not easy to find the appearance of the wall damage, and therefore must be the whole pipeline thickness measurement should be dissected when necessary.