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2015年
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氢气%天然气%长输管道%线路设计%对比分析
氫氣%天然氣%長輸管道%線路設計%對比分析
경기%천연기%장수관도%선로설계%대비분석
hydrogen%natural gas%long-distance transportation pipeline%pipeline route design%contrastive analysis
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。
對 ASME B31．12—2014與 ASME B31．8—2014關于埋地長輸管道線路設計部分中管材選擇、管道設計、管道銲接及無損檢測、管道試壓、管道閥室、埋深、間距等方麵進行瞭對比分析，得齣：與天然氣長輸管道設計相比，氫氣長輸管道用鋼管選材存在一定限製條件，其直管段鋼管設計公式中攷慮瞭材料性能繫數的影響，熱煨彎管設計方法不同，彊度試壓介質及試壓壓力值存在差彆，在鋼管銲前預熱及銲後熱處理、埋地管道最小覆土厚度、與地下其他管道和建構築物間距及穿越公（鐵）路套管要求等方麵要求更嚴格。氫氣與天然氣長輸管道對冷彎彎管、環銲縫無損檢測、閥室設置以及嚴密性試壓的相關要求是一緻的。所以，應用現有天然氣管網設施輸送氫氣及天然氣管道轉變為氫氣管道時需要進行全麵分析、論證，確保管道安全可靠。
대 ASME B31．12—2014여 ASME B31．8—2014관우매지장수관도선로설계부분중관재선택、관도설계、관도한접급무손검측、관도시압、관도벌실、매심、간거등방면진행료대비분석，득출：여천연기장수관도설계상비，경기장수관도용강관선재존재일정한제조건，기직관단강관설계공식중고필료재료성능계수적영향，열외만관설계방법불동，강도시압개질급시압압력치존재차별，재강관한전예열급한후열처리、매지관도최소복토후도、여지하기타관도화건구축물간거급천월공（철）로투관요구등방면요구경엄격。경기여천연기장수관도대랭만만관、배한봉무손검측、벌실설치이급엄밀성시압적상관요구시일치적。소이，응용현유천연기관망설시수송경기급천연기관도전변위경기관도시수요진행전면분석、론증，학보관도안전가고。
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.
