氢气与天然气长输管道线路设计ASME标准对比分析

发布时间：2019-01-12 18:34

【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。
[Abstract]:The pipe material selection, pipeline design, pipeline welding and nondestructive testing, pipeline pressure test, pipeline valve chamber, buried depth, distance between ASME B31.12-2014 and ASME B31.8-2014 on pipeline selection, pipeline design, pipeline welding and nondestructive testing are compared and analyzed. Compared with the design of long distance natural gas pipeline, there are some limited conditions in the selection of steel pipe for long distance hydrogen pipeline. The influence of material performance coefficient is considered in the design formula of straight pipe section, and the design method of hot-simmer bend pipe is different. There are differences in strength pressure test medium and pressure test pressure value. The requirements of preheating and post-welding heat treatment of steel pipe before welding, minimum overlying soil thickness of buried pipeline, distance between underground pipeline and construction structure, and casing requirement of crossing public (iron) road are more strict. The requirements for cold bend pipe, non destructive testing of girth weld, valve chamber and tightness test for long distance hydrogen and natural gas pipeline are consistent. Therefore, it is necessary to make a comprehensive analysis and demonstration to ensure the safety and reliability of the pipeline when using the existing natural gas pipeline facilities to transport hydrogen and the natural gas pipeline into hydrogen pipeline.
【作者单位】：中国石油天然气管道工程有限公司;
【分类号】：TU996.7

【参考文献】