天然气集输场站管线弯头冲蚀磨损数值模拟研究
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TE88

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国家重点研发计划项目(2018YFF0215000);中国特种设备检测研究院青年基金(2018青年20)


Study on Erosion Numerical Simulation of Elbows of Pipelines in Natural Gas Gathering Stations
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National Key Research and Development Project (2018YFF0215000);Youth Foundation of China Special Equipment Inspection and Research Institute (2018 Youth 20)

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    摘要:

    集输管线中,颗粒冲蚀磨损常对管道内壁造成破坏。即使颗粒尺寸较小,累积的颗粒冲蚀磨损依然会对管壁造成严重的壁面减薄,甚至引发管线泄漏。为了研究天然气集输场站内管线的弯头冲蚀磨损,针对某集气场站站内管线弯头冲刷腐蚀减薄案例,通过机理分析和流体动力学仿真分析方法,研究了站内管线直角弯头、圆弧形弯头及不同锥角直角弯头内壁冲蚀磨损规律。结果表明:集气场站管线内常存在冲蚀敏感区,使得管道、设施内壁易受颗粒冲蚀磨损影响;利用流体动力学仿真分析方法,可以有效预测弯头内冲蚀磨损位置分布并优化弯头结构设计;直角弯头的耐冲蚀磨损性能优于常规圆弧形弯头。可见研究石油天然气集输管线内冲刷腐蚀规律,对寿命预测、管道检测及运行安全防护都有重要的指导意义。

    Abstract:

    Erosion often occurs on the inner wall of gathering pipelines. Even if the particle size is small, the cumulative erosion may also cause serious erosion on pipelines and even leads to leakages. In order to learn erosion on elbows of pipelines in natural gas stations, mechanisms analysis and computational fluid dynamics (CFD) method were used to investigate erosion on circular elbows and square elbows with different cone angles based on a case of elbows erosion in a gas gathering station. The results show that there are erosion sensitive areas on the eroded surface of elbows which are more likely to be eroded, erosion prediction and structure design optimization of elbows could be obtained through CFD method and square elbows have better erosion resistance than regular circular elbows. It is concluded that researches on erosion are important in oil and gas gathering industry and could be a good guiding for life prediction, inspection and operational safety protection of gathering pipelines.

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林楠,黄辉,李仕力,等. 天然气集输场站管线弯头冲蚀磨损数值模拟研究[J]. 科学技术与工程, 2020, 20(21): 8543-8549.
Lin Nan, 黄辉, 李仕力,et al. Study on Erosion Numerical Simulation of Elbows of Pipelines in Natural Gas Gathering Stations[J]. Science Technology and Engineering,2020,20(21):8543-8549.

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  • 收稿日期:2019-10-06
  • 最后修改日期:2020-05-27
  • 录用日期:2019-12-27
  • 在线发布日期: 2020-08-18
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