辽宁石油化工大学学报 ›› 2026, Vol. 46 ›› Issue (3): 66-72.DOI: 10.12422/j.issn.1672-6952.2026.03.009

• 石油与天然气工程 • 上一篇    下一篇

不同土壤中保温层破损对埋地输油管道温降特性的影响研究

班梓轩1(), 樊丽敏2, 周志强3, 任泽乾3, 关丽3, 洪兰兰4, 刘德俊1(), 荣峰1   

  1. 1.辽宁石油化工大学 石油天然气工程学院,辽宁 抚顺 113001
    2.中国石油天然气股份有限公司 辽宁朝阳销售分公司,辽宁 朝阳 122000
    3.中国石油天然气管道工程有限公司 沈阳分公司,辽宁 沈阳 110031
    4.中国石化销售股份有限公司 福建泉州石油分公司,福建 泉州 362000
  • 收稿日期:2025-12-25 修回日期:2026-03-09 出版日期:2026-06-25 发布日期:2026-06-10
  • 通讯作者: 刘德俊
  • 作者简介:班梓轩(1998-),男,硕士研究生,从事保温管道部分失效安全分析方面的研究;E⁃mail:754830686@qq.com
  • 基金资助:
    辽宁省科技厅博士启动基金项目(2025?BS?0416)

Study on the Impact of Insulation Damage on Temperature Drop Characteristics of Buried Oil Pipelines in Different Soils

Zixuan BAN1(), Limin FAN2, Zhiqiang ZHOU3, Zeqian REN3, Li GUAN3, Lanlan HONG4, Dejun LIU1(), Feng RONG1   

  1. 1.College of Petroleum and Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.PetroChina Company Limited Liaoning Chaoyang Sales Branch,Chaoyang Liaoning 122000,China
    3.Shenyang branch,China Petroleum Pipeline Engineering Corpretion,Shenyang Liaoning 110031,China
    4.Quanzhou Branch of SINOPEC Fujian Oil Products Company,Quanzhou Fujian 362000,China
  • Received:2025-12-25 Revised:2026-03-09 Published:2026-06-25 Online:2026-06-10
  • Contact: Dejun LIU

摘要:

埋地输油管道保温层破损会显著改变管周土壤温度场的分布,进而影响管道的热力性能和运行安全。基于多物理场耦合传热理论,构建了埋地输油管道三维稳态传热模型,定量分析了不同土壤介质(黏土、壤土、砂等)条件下管道的温降特性和管周土壤温度场的演化规律;采用ANSYS Fluent 2022软件对模型进行求解,求解过程中考虑了水分侵入效应。结果表明,在砂土地段,埋地输油管道保温层全部破损的临界段数为15段(单段长度100 m),对应的临界破损距离为1.5 km;依据此临界距离设置初始段监测点,80 km管道共需设置56个温度监测点;各监测点温度沿管道轴向呈非线性下降趋势,其中第28个监测点(管道42.0 km处)的出口温度首次降至析蜡临界温度(45 ℃)。研究提出的“临界距离分段监测法”可实现砂土地段埋地管道保温层破损状态的精准监测,为埋地管道的安全运行提供技术支撑。

关键词: 埋地管道, 保温层破损, 温度场, 多物理场耦合, 数值模拟

Abstract:

Damage to insulation layer of buried oil pipelines will significantly change the distribution of the soil temperature field around the pipeline, thereby affecting the thermal performance and operational safety of the pipeline. Based on the theory of multi?physics field coupling, this study establishes a three?dimensional steady?state heat transfer model to quantitatively analyze the temperature drop characteristics of the pipeline and the evolution law of the soil temperature field under different soil types (clay, loam, sand). The model was solved using ANSYS Fluent 2022, with the effect of moisture intrusion considered. The numerical simulation results show that in sand soil, the critical number of segments with complete insulation damage is 15 segments (each 100 meters), corresponding to a critical damage distance of 1.5 kilometers. According to this critical distance, initial monitoring points are set, and a total of 56 monitoring points are required for an 80?kilometer pipeline. The temperature at each monitoring point shows a non?linear decreasing trend along the pipeline. The outlet temperature at the 28th monitoring point (42 kilometers away) drops to the wax precipitation point of 45 ℃ for the first time. The "critical distance segmented monitoring method" proposed in this study can achieve accurate monitoring of the pipeline damage status in the sand soil section, providing technical support for the safe operation of the pipeline.

Key words: Buried pipeline, Insulation layer damage, Temperature field, Multi?physics field coupling, Numerical simulation

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引用本文

班梓轩, 樊丽敏, 周志强, 任泽乾, 关丽, 洪兰兰, 刘德俊, 荣峰. 不同土壤中保温层破损对埋地输油管道温降特性的影响研究[J]. 辽宁石油化工大学学报, 2026, 46(3): 66-72.

Zixuan BAN, Limin FAN, Zhiqiang ZHOU, Zeqian REN, Li GUAN, Lanlan HONG, Dejun LIU, Feng RONG. Study on the Impact of Insulation Damage on Temperature Drop Characteristics of Buried Oil Pipelines in Different Soils[J]. Journal of Liaoning Petrochemical University, 2026, 46(3): 66-72.

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链接本文: https://journal.lnpu.edu.cn/CN/10.12422/j.issn.1672-6952.2026.03.009

               https://journal.lnpu.edu.cn/CN/Y2026/V46/I3/66