火灾对埋地管道中油品温度影响的数值研究  

Numerical Study of the Heat Transfer Influence of the Ground Surface Fire on the Oil Transport in Buried Pipeline

作　　者：杨丽芸[1] 邓松圣[2] 秦伟 

机构地区：[1]西昌卫星发射中心,四川西昌615606 [2]后勤工程学院,重庆400016 [3]西南合成制药股份有限公司,重庆401147

出　　处：《管道技术与设备》2009年第2期12-15,共4页Pipeline Technique and Equipment

基　　金：重庆市自然科学基金资助项目(CSTC2007BB6103)

摘　　要：地面发生火灾时,土壤中原有的热平衡被破坏,土壤温度、地下管道温度将产生变化,从而进一步影响管内输送介质的温度,使其不断升高,当油品温度升高到一定值时,管道安全将受到影响。针对此情况建立非稳态传热模型,给出了微分方程;运用有限差分法对模型进行了数值模拟计算,其中对管道采取分段传热计算,并对结果进行分析。通过该研究,得出发生火灾后,埋地管道内输送油品的沿程温度变化规律,从而为火灾后的埋地输油管道性能安全评估提供了科学依据。When the ground surface is on fire, the thermal balance of soil is destroyed. Then a new temperature field will bebuilt up. Accordingly, the temperature redistribution of oil in the buried pipeline is affected. The unsteady heat transfer model is developed for this instance, numerical simulations made, and the result analyzed in this work. Through the study, the temperature change of the oil transporting in the buried pipeline can be known when the ground surface is afire. Key words： fire; buried pipeline ; unsteady temperature field

关 键 词：火灾 埋地输油管道 非稳态温度场 

分 类 号：TE88[石油与天然气工程—油气储运工程]