雷静电作用下储气库安全危害分析

为保障能源储备安全，探究雷电和静电对储气库安全的影响。根据雷电和静电理论，构建储气库雷静电概率模型，分析雷静电对储气库的影响。考虑天然气扩散的特殊性，选取高斯烟羽模型预测气体扩散范围，并结合闪火后果准则对闪火危害范围进行分析，构建CCPS-BST模型对爆炸危害范围预测，分析风速及大气稳定度对三种危害后果的影响。结果表明，雷静电会增加储气库泄漏后发生闪火和爆炸的概率，气体扩散范围和闪火后果沿主导风向呈梭形分布，蒸气云爆炸后果由中心向四周扩散，三种危害范围都与风速和大气稳定度呈相反的变化。研究结果可为多因素下储气库安全分析研究提供参考，为降低灾害后果和维护储气库的日常安全提供了理论依据。

Analysis of Gas Storage Safety Hazards under the Influence of Lightning and Static Electricity

It is important to ensure the security of energy storage and educe the loss caused by gas storage leakage.According to the theory of lightning and static accumulation,model of lightning static probability for gas storage is established.The impact of lightning static on gas storage leakage is evaluated by using this model.The Gaussian plume diffusion model is selected to predict the gas diffusion range,and then combined with the flash fire criteria to predict the flash fire hazard range.The CCPS-BST model is built to predict the explosion range.Finally,the effects of wind speed and atmospheric stability on gas diffusion range,flash fire and explosion hazard radius are analyzed and compared.The research results show that lightning static electricity will increase the probability of flash fire and explosion after gas storage leaking.The gas diffusion range and the consequences of flash fire are shuttle-shaped along the dominant wind direction;the explosion of the vapor cloud spreads from the center to the surroundings decreases with the increase of atmospheric stability.The range of the three leakage consequences is opposite to the change of atmospheric stability and wind speed.The results of the study can provide a reference for the leakage consequences analysis of gas storage under multiple factors and a new idea for gas storage research.