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通过一起固定式低温绝热液体贮槽夹层气压试验时内壳发生失稳变形 ,导致外壳爆裂的事故原因分析 ,证明此类容器在制造过程应严格控制内壳的成型尺寸和焊缝残余应力 ,并加强对夹层气压试验、抽真空检漏的工艺程序监控。
Through the analysis of instability deformation of the inner shell during the interlayer gas pressure test of a fixed cryogenic insulation liquid tank, the analysis of the cause of the explosion of the shell shows that the forming dimensions of the inner shell and the residual stress of the weld should be strictly controlled during the manufacturing process Strengthen the sandwich pressure test, vacuum leak detection process monitoring.