特种防护舱抗爆性能试验研究

Test Research on Antiknock Performance of Special Protective Tank

为探讨特种防护舱抗爆性能,进行了舱内爆炸原型试验,研究不同装药量下开闭盖状态防护舱内爆炸时的空气冲击波超压和舱体位移过程。结果表明:同药量下闭盖状态的空气冲击波超压明显高于开盖状态,即封闭舱内偶然爆炸时空气冲击波超压更高;随装药量的增大,舱壁的空气冲击波超压也在增大;舱体侧壁经过多次正反射作用均未发生碎片反应,顶盖泄爆措施对降低底板的空气冲击波超压十分有利;距爆心较近处的位移均比距爆心较远处的位移大。原型试验舱体完全破坏,但结构未发生崩溃式破坏,并无碎片及内爆的二次破片飞出,舱体具有一定的抗爆性能和较好的防破片能力。

To discuss the antiknock performance of special protective tanks, the prototype test of in-tank explosion is carried out.The overpressure of shock waves and the displacement of the tank under in-tank explosions with different explosive dosage and different ways for opening or closing are studied. Results show that there are great differences between in-tank explosion loads in open and close tanks; the shock wave overpressure in the close tank is significantly higher than that in the open tanks with explosives of the same amount,that is to say, the shock wave overpressure in the close tank is much higher in accidental explosions; the shock wave overpressure of the bulkhead increases with the increase of explosive dosage; the closer the position is to the explosion center, the displacement is bigger.The prototype tank is completely destroyed, but its structure doesn＇t collapse and there is no debris and second fragment, which shows that the special protective tank is of certain antiknock performance as well as good anti-fragment ability.