【摘要】 天然气管道泄漏在线检测模拟实验系统是以压缩空气为介质,可以模拟现场诸如管材缺陷腐蚀穿孔所致泄漏、管道断裂泄漏以及人为打孔泄漏等多种形式的泄漏,同时进行压力/流量突变法、负压波检测法、瞬态模型法以及序贯统计法等多种泄漏检测与定位方法的实验验证与对比分析;文中设计出了模拟实验系统体系结构,分析了泄漏类型及模拟阀门选型,构建了泄漏检测系统硬件结构,设计了相应的软件;该系统将为深入研究天然气管道泄漏检测与定位方法提供重要的实验基础。更多还原

【Abstract】 Experiment system of real-time leakage detection for nature gas pipeline,whose medium is air,could simulate almost all kinds of leakage which is brought up by corrosion、crack and drill,at the same time,analyze and compare arithmetic,such as Negative Pres- sure Ware Method、real-time model method.The thesis designs structure of the system,analyzes leakage type,constructs frame of hard- ware,finally programs the software.The system will provide experiment foundation and important data to develop the arithmetic fast.更多还原