摘要
分析了输油管道发生泄漏事故后的油品泄漏扩散、液池扩展、液池挥发和蒸气云扩散等过程,讨论了各物理过程的数学模型。针对液池具有长时间连续挥发的特点,选用高斯烟羽模型作为数值模型,给出了面源的蒸气云扩散计算方法。通过计算典型输油管道泄漏后的液池挥发速率和危险性蒸气云扩散范围,分析了温度、风速、大气稳定度对油品泄漏蒸气云的影响。结果表明:在大气对流稳定的静风情况下,汽油等易挥发油品泄漏形成液池后,将挥发产生一个远大于液池范围的爆炸性蒸气云。
Process in the leakage diffusion,oil pool extending,oil volatilization and vapor cloud dispersion for oil pipeline are analyzed,and the mathematical models for different physical transversions are discussed.In order to describe the characteristics of long-time continuous dispersion of the vapor cloud from the oil pool,the area source dispersion model is built based on Gauss plume dispersion model.By calculating the volatilization rate and the range of dangerous vapor cloud for a typical leakage accident of pipeline,the effects of temperature,wind speed and atmosphere stability about the vapor cloud are analyzed.The result shows that an explosive vapor cloud that covers much larger area than that of the pool will produce from volatilizing under stable atmosphere convection and static wind after the formation of oil pool of volatile oil like gasoline.
出处
《油气储运》
CAS
北大核心
2011年第5期334-336,313,共3页
Oil & Gas Storage and Transportation
关键词
输油管道
泄漏
液池
蒸气云
扩散
模型
oil pipeline,leakage,oil pool,vapor cloud,diffusion,mathematical model
