为分析天然气泄漏事故的危险性,以天然气净化分离器为研究对象,利用高斯烟羽模型描述天然气泄漏的运动扩散规律,运用VB编程和MATLAB语言开发了净化分离器泄漏扩散模拟软件,研究光照、风速、昼夜和泄漏压力等因素对泄漏后果的影响.研究表明:光照越强泄漏扩散范围越大,并且弱光照泄漏的危害大于强光照;泄漏扩散距离随风速的增大呈现先减小后增大的变化趋势,在风速逐渐增大的过程中,存在危险风速,此时泄漏物浓度最高;白昼泄漏的影响范围要远大于夜间,但夜间天然气的泄漏比白昼更具危险性.%In order to analyze the risk of natural gas leakage accidents,the natural gas purification separa-tor is studied as the object to describe the natural gas leak age diffusion law by using Gaussian plume model. VB programming and MATLAB language are used to develop the simulation software of the leakage and diffusion of the purification separator to study the influence of illumination, wind speed, day and night and leakage pressure on the leakage consequence.Studies show that the stronger the illumination is,the greater the leakage diffusion scope is,and the danger of weak illumination is bigger than that of strong illu-mination;with the increasing wind speed,the leakage diffusion distance increases first and then decreases, and during the process of wind speed increasing,dangerous wind speed exists and the leakage concentra-tion is the highest at this time; the influence scope of leakage in the daytime is much bigger than that at night,but the natural gas leakage at night is more dangerous than that in the daytime.
展开▼
