摘要
对ASME B31.12—2014与ASME B31.8—2014关于埋地长输管道线路设计部分中管材选择、管道设计、管道焊接及无损检测、管道试压、管道阀室、埋深、间距等方面进行了对比分析,得出:与天然气长输管道设计相比,氢气长输管道用钢管选材存在一定限制条件,其直管段钢管设计公式中考虑了材料性能系数的影响,热煨弯管设计方法不同,强度试压介质及试压压力值存在差别,在钢管焊前预热及焊后热处理、埋地管道最小覆土厚度、与地下其他管道和建构筑物间距及穿越公(铁)路套管要求等方面要求更严格。氢气与天然气长输管道对冷弯弯管、环焊缝无损检测、阀室设置以及严密性试压的相关要求是一致的。所以,应用现有天然气管网设施输送氢气及天然气管道转变为氢气管道时需要进行全面分析、论证,确保管道安全可靠。
Contrasts were made about pipe material selection, pipeline design, pipeline welding and nonde- structive testing,pressure test, valves, cover, clearance, and casing requirements for buried long-distance transportation pipeline in ASME B31. 12--2014 and ASME B31.8--2014, and conclusions are as fol- lows：compared with the design of gas transmission pipeline, pipe material selection of hydrogen transmis- sion pipeline has certain constraints, material performance factor is considered in the straight pipe design formula, hot bends design method and pressure test medium and requirements are different. The require- ments for preheating and post weld heat treatment, cover, clearance between pipelines and other under- ground structures, and casing under railroads, highways, roads or streets, etc. are stricter than that for gas transmission pipeline. The requirements for cold bends, nondestructive testing, valves and leak test are consistent with that for gas transmission pipeline. In order to ensure the safety and reliability of pipe, a comprehensive analysis need to be done when using the existing natural gas pipeline infrastructure for hy- drogen transport and converting natural gas pipelines into hydrogen pipelines.
出处
《压力容器》
2015年第8期44-49,25,共7页
Pressure Vessel Technology
关键词
氢气
天然气
长输管道
线路设计
对比分析
hydrogen
natural gas
long-distance transportation pipeline
pipeline route design
contrastiveanalysis
