海洋石油平台圆柱障碍物对可燃气体爆炸的影响

Influence of cylindrical obstacle on flammable gas explosion rules in offshore oil platform

为获得海洋石油平台上圆柱障碍物数量和阻塞率对可燃气体爆炸产生的冲击波和温度场影响特性,建立存在不同圆柱障碍物的海洋石油平台模型,采用有限元分析法,研究15种工况下圆柱障碍物对可燃气体爆炸产生冲击波超压峰值和温度峰值的作用规律.在此基础上,采用曲线拟合的方法,获得冲击波超压峰值与障碍物数量、阻塞率的数学关系.研究结果表明,随着圆柱障碍物数量和阻塞率的增加,冲击波超压峰值明显增加,温度峰值增加幅度较小且集中维持在2000～2500 K.

To understand the influence of cylindrical obstacles number and blockage ratio of flammable gas explosion on the shock wave and temperature characteristics of the offshore oil platform,the model of offshore oil platform with different cylindrical obstacles was established,and the peak overpressure of shock wave and the peak temperature which caused by flammable gas explosion in 15 kinds of operating conditions were studied by using the finite element analysis method. On this basis,by using the method of curve fitting,the mathematical relation expression of peak overpressure,cylindrical obstacle numbers and blockage ratio were conducted. Results show that with the increase of cylindrical obstacle numbers and blockage ratio,the shock wave peak overpressure increases obviously, and the peak temperature increases slowly which located at 2000 ~ 2500 K.