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近十年来,我国长输管道建设得到了飞速发展,截至2013年底,我国已建成长输油气管道总里程已达到10.6万公里,覆盖31个省区市和特别行政区,形成了横跨东西、纵贯南北,连通海外的油气管网格局,使近10亿人口受益,成为推动我国经济发展和造福民生的能源大动脉。目前,石油天然气长输管道干线的管径已达1219mm,输送压力提升到10MPa以上,管材也从X52、X65、X70提高到了X80。长输管道建设复杂的地质、气候条件,管材、管径以及施工要求的多样性,对焊接设备的配套使用提出了不同要求,根据我们多年以来的经验,根据不同用途提供以下解决方案,供大家参考。
Over the past decade, China’s long-distance pipeline construction has witnessed rapid development. By the end of 2013, the total length of long-distance oil and gas pipelines in China has reached 106,000 kilometers, covering 31 provinces, autonomous regions, municipalities and special administrative regions. Throughout the north and south, the pattern of oil and gas pipelines connecting overseas has benefited nearly 1 billion people and has become the energy artery that promotes China’s economic development and benefits people’s livelihood. At present, the pipe diameter of oil and gas long-distance pipeline has reached 1219mm, the delivery pressure is raised to over 10MPa, and the pipe is also raised from X52, X65 and X70 to X80. The complex geological, climatic conditions, pipe, pipe diameter and construction requirements for the long-distance pipeline construction put forward different requirements for the use of welding equipment. Based on our experience over the years, we have provided the following solutions for different purposes reference.