基于计算流体力学的集气站气体检测报警仪布置优化.pdfVIP

2010年摇 第34卷摇 摇 摇 摇 摇 摇 中国石油大学学报(自然科学版)摇 摇 摇 摇 摇 摇 摇 摇 Vol.34摇 No.5 摇 第5期摇 摇 摇 摇 摇 摇 摇 摇 Journal of China University of Petroleum摇 摇 摇 摇 摇 摇 摇 摇 Oct.2010 摇 摇 文章编号:1673鄄5005(2010)05鄄0141鄄06 基于计算流体力学的集气站气体检测 报警仪布置优化 1 1 2 2 章摇 博 , 陈国明 ,龚金海 ,王摇 勇 (1. 中国石油大学 海洋油气装备与安全技术研究中心,山东 东营257061; 2. 中原石油勘探局 勘察设计研究院,河南濮阳457001) 摘要:提出气体检测报警仪的布置优化方法,以某高含硫气田集气站天然气泄漏为例,构建集气站计算流体力学 (CFD)模型并将站内气体检测报警仪设置为模型中的监测点,通过对天然气泄漏及扩散过程的数值模拟获得各监 测点的甲烷和硫化氢浓度,据此对可燃气体检测报警仪布置高度、可燃及有毒气体检测报警仪探测有效性及反应时 间进行分析。 结果表明:对于高含硫天然气泄漏检测,可燃气体检测报警仪高位布置检测效果优于低位布置;硫化 氢检测报警仪探测有效性高于可燃气体检测报警仪。 建议高含硫气田集气站气体检测报警仪布置可以硫化氢检测 报警仪为主并辅以可燃气体检测报警仪。 关键词:计算流体力学;集气站;气体检测报警仪;布置优化;高含硫 中图分类号:X928郾03摇 摇 摇 文献标志码:A摇 摇 摇 doi:10.3969/ j.issn.1673鄄5005.2010.05.026 Optimization of gas detection and alarm instrument networks at gas gathering station based on CFD 1 1 2 2 ZHANG Bo ,CHEN Guo鄄ming ,GONGJin鄄hai ,WANG Yong (1.Centrefor Offshore Engineering and Safety Technology,China University of Petroleum,Dongying 257061,China; 2.PetroleumProspecting and DesignInstitute,ZhongyuanPetroleum ExplorationBureau,Puyang 457001,China) Abstract:The method of gas detection and alarm instrument networks optimization was presented. Then,a CFD model for natural gasleakageinagasgatheringstationof ahighsulfidegasfieldwassetupandthegasdetectionandalarminstruments were set up as monitoring points. The methane and hydrogen sulfide volume fractions of monitoring points were recorded by the simulation of natural gas release and dispersion process. The sensitivity to high and low level placement of combustible