张振永, 孟献强, 孙学军, 周亚薇, 张金源. 中俄东线站场工艺管道用高钢级低温钢管韧性指标[J]. 油气储运, 2018, 37(4): 435-442. DOI: 10.6047/j.issn.1000-8241.2018.04.012
引用本文: 张振永, 孟献强, 孙学军, 周亚薇, 张金源. 中俄东线站场工艺管道用高钢级低温钢管韧性指标[J]. 油气储运, 2018, 37(4): 435-442. DOI: 10.6047/j.issn.1000-8241.2018.04.012
ZHANG Zhenyong, MENG Xianqiang, SUN Xuejun, ZHOU Yawei, ZHANG Jinyuan. Toughness index of low-temperature pipe of high steel grade used for the process pipelines at the station of China-Russia eastern natural gas pipeline[J]. Oil & Gas Storage and Transportation, 2018, 37(4): 435-442. DOI: 10.6047/j.issn.1000-8241.2018.04.012
Citation: ZHANG Zhenyong, MENG Xianqiang, SUN Xuejun, ZHOU Yawei, ZHANG Jinyuan. Toughness index of low-temperature pipe of high steel grade used for the process pipelines at the station of China-Russia eastern natural gas pipeline[J]. Oil & Gas Storage and Transportation, 2018, 37(4): 435-442. DOI: 10.6047/j.issn.1000-8241.2018.04.012

中俄东线站场工艺管道用高钢级低温钢管韧性指标

Toughness index of low-temperature pipe of high steel grade used for the process pipelines at the station of China-Russia eastern natural gas pipeline

  • 摘要: 中俄东线天然气管道是中国首条OD 1 422 mm大口径输气管道,途经东北严寒地区。基于此,对比分析国内外标准规范,明确了天然气管道站场工艺管道断裂控制设计原则、最低设计温度选定要求,包括:①站内工艺管道断裂控制,关键是要防止管道发生起裂,钢管应具有足够的断裂韧性。对于起裂后的断裂扩展控制和落锤撕裂试验(Drop Weight Tear Test,DWTT)指标,应视工程具体情况并结合国内低温钢管的生产水平综合确定。②最低设计温度应考虑正常运行操作、放空、节流以及停输保压等工况下金属壁温可能达到的最低温度,针对站场工艺管道用X70、X80钢管确定管道的最低设计温度等于最低环境温度。③针对油气输送管道站场地上工艺管道,建议最低环境温度取最低日平均温度。结合理论计算和钢管实物性能参数,提出了中俄管道站场工艺管道用X70、X80钢管的低温韧性指标,对今后类似工程有一定的借鉴意义。

     

    Abstract: The China-Russia eastern natural gas pipeline is the first large-diameter (OD 1 422 mm) natural gas pipeline in China and it runs through the cold areas in northeastern China. In this paper, the design principles of process pipeline fracture control at the station of natural gas pipeline and the selection requirements of minimum design temperature were confirmed based on the comparative analysis and study of domestic and foreign standards and norms. First, in order to control the fracture of process pipelines at the station, it is fundamental to prevent the crack initiation, so the steel pipe should be tough enough to avoid the crack initiation. And the fracture propagation control index after the crack initiation and the Drop Weight Tear Test (DWTT) index shall be determined comprehensively according to specific project situations, combined with the domestic production level of low-temperature steel pipes. Second, when the minimum temperature is designed, it is necessary to consider the minimum temperature of the metal wall in the operational modes of normal operation, venting, throttling and shutdown & pressure maintaining. And the minimum design temperature of X70 and X80 pipes used for the process pipelines at the station is equal to the lowest ambient temperature. Third, it is recommended to take the lowest daily average temperature as the lowest ambient temperature of the process pipeline at the station of oil/gas pipeline. Finally, the low-temperature toughness indexes of X70 and X80 steel pipes used for the process pipeline at the station of China-Russia eastern natural gas pipeline were put forward based on theoretical calculation and physical performance parameter statistics. (4 Figures, 4 Tables, 22 References)

     

/

返回文章
返回