摘要
基于非等温条件下天然气管道的稳态泄漏,对国内外现有天然气管道泄漏模型的关键参数进行修正,建立了长输天然气管道小孔泄漏、管道泄漏和大孔泄漏模型。针对长输天然气管道泄漏三种状态提出两状态模式并通过实证分析,该模型能更准确地表征管道泄漏量、泄漏孔口内外温度和压力分布等实际情况。d<15%D时,运用小孔模型进行计算更符合实际;85%D<d时,应用管道模型进行计算更合理;20%D<d<100%D时,可使用大孔泄漏模型计算。
Based on the steady state leakage of natural gas pipelines under non-isothermal conditions,the key parameters of existing gas pipeline leakage models at home and abroad were modified,and long distance gas pipeline leakage models of small hole leakage,pipe leakage and big hole leakage were established.Aiming at the three states of long distance gas pipeline leakage,a two state model was put forward.It was verified that the model can characterize the natural gas pipeline leakage,the distribution of temperature and pressure inside and outside the leakage orifice more accurately.The small hole model is more accurate when d<15%D,the pipe model is more rational when 85%D<d and the big hole model is applicable when 20%D<d<100%D.
作者
王小完
骆济豪
骆正山
WANG Xiao-wan;LUO Ji-hao;LUO Zheng-shan(School of Management,Xi'an University of Architecture&Technology,Shaanxi Xi'an 710055,China;Xi'an Jiaotong University Affiliated Middle School,Shaanxi Xi'an 710056,China)
出处
《消防科学与技术》
CAS
北大核心
2018年第7期971-976,共6页
Fire Science and Technology
基金
国家自然科学基金项目"陆上油气管线风险评估技术研究"(61271278)
陕西省重点学科支持项目(E08001)
关键词
非等温
天然气管道
微元分析
稳态泄漏
计算模型
non-isothermal
natural gas pipeline
micro element anal.ysis
steady leakage
calculation model
