西南石油大学学报(自然科学版) ›› 2020, Vol. 42 ›› Issue (1): 155-160.DOI: 10.11885/j.issn.1674-5086.2018.10.16.01

• 石油与天然气工程 • 上一篇    下一篇

长输管道储气调峰对管径选取的影响研究

谢英, 张俊   

  1. 西南石油大学石油与天然气工程学院, 四川 成都 610500
  • 收稿日期:2018-10-16 出版日期:2020-02-10 发布日期:2020-02-10
  • 通讯作者: 谢英,E-mail:592232091@qq.com
  • 作者简介:谢英,1972年生,女,汉族,四川资中人,副教授,硕士,主要从事石油天然气储运方面的教学和科研工作。E-mail:592232091@qq.com;张俊,1987年生,女,汉族,重庆万州人,工程师,主要从事石油天然气储运方面的研究。E-mail:529036224@qq.com

Influence of Gas Storage and Peak Shaving on Pipe Diameter Selection of Long-distance Pipeline

XIE Ying, ZHANG Jun   

  1. School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2018-10-16 Online:2020-02-10 Published:2020-02-10

摘要: 针对天然气长输管道管径选取问题,开展了将管道储气调峰纳入管径比选的研究,总结了管道末段储气能力及调峰需求量计算方法。以某天然气长输管道工程为例,结合用气的不均匀性,采用稳态仿真模拟和动态仿真模拟相结合的方法,首先,对管道通过能力满足均月均日和高月高日工况时的管径进行水力计算,然后,对小时调峰、日调峰和月调峰的需求量进行分析,根据管道储气调峰能力和调峰需求量对比选取调峰工况下的适宜管径方案。在此基础上,对管道调峰和建设储气库调峰进行了详细经济性对比分析,获得了通过适当增大管径的方式不仅能满足小时调峰和部分日调峰需求、而且经济性更高的结论。研究结果表明,在管径选取时,应将管道调峰纳入管径比选的考虑因素,综合对比得出最优的管径方案。

关键词: 调峰, 长输管道, 管径, 比选, 储气能力

Abstract: In this study, gas storage and peak shaving were considered for pipe diameter selection of long-distance pipeline carrying natural gas, and the calculation methods of gas storage capacity and peak shaving demand at the end of the pipeline were summarized. With a certain long-distance natural gas pipeline project as an example, a method combining static and dynamic simulation was used because the natural gas consumption is non-uniform. First, hydraulic calculations were performed to obtain the corresponding pipe diameters, whose pipe capacities satisfy daily/monthly average and high monthly and high daily working conditions. Then, the demand of hourly/daily/monthly peak shaving was analyzed, and suitable pipe diameters were selected under the peak shaving working condition after comparing the storage and peak shaving capacity of the pipeline and the peak shaving demand. Accordingly, a detailed economic comparative analysis was performed on peak shaving in pipeline and in gas storage constructed, which indicated that appropriately increasing pipe diameter can not only satisfy the demand of hourly peak shaving and daily peak shaving, but also is more economical. The results show that, when selecting pipe diameter, pipeline peak shaving should be considered in order to obtain the optimal pipe diameter scheme via comprehensive comparison.

Key words: peak shaving, long-distance pipeline, pipe diameter, comparative selection, gas storage capacity

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