摘要
油气集输过程中所携带的砂砾会对管壁造成冲蚀磨损,可能导致设备破裂或失效。获取冲蚀规律,揭示冲蚀机理对保障设备安全平稳运行具有重要意义。鉴于此,模拟油气管道中球阀密封面,开展了冲蚀磨损试验,比较了不同颗粒速度、粒径和冲击角度下的密封面冲蚀结果。采用3 3 次完全析因设计方法,利用Statistica软件开展了冲蚀参数的回归分析、交互效应分析、均值分析和响应曲面分析等,得到了各影响因素及其相互作用对冲蚀磨损的影响。分析结果表明,试件冲蚀磨损随着颗粒速度和粒径的增大而增大,其中冲蚀角度为30°时冲蚀磨损最严重。同时开展了冲蚀回归预测,分别建立了试件质量损失和壁厚减薄量的回归模型并进行了验证。对冲蚀影响参数进行了优化分析,得到了减少冲蚀磨损的最佳参数。研究成果可以为球阀密封面在气固冲蚀作用下的破坏机理研究提供参考,并为现场作业安全提供保障。
The sand and gravel carried in the process of oil and gas gathering and transportation will cause erosion wear on the pipe wall, which may cause equipment rupture and failure. Understanding erosion laws and revealing erosion mechanisms are of great significance for ensuring the safe and stable operation of equipment. In view of this, an erosion wear test is carried out to simulate the sealing surface of the ball valve in oil and gas pipeline. The erosion results of the sealing surface under different particle velocities, particle sizes and impact angles are compared. Using 3 3 full factorial design methods, Statistica software is used to carry out the regression analysis, interaction effect analysis, mean value analysis and response surface analysis of erosion parameters, to obtain the influence of various influencing factors and their interactions on erosion wear. The analysis results show that the erosion wear of the specimen increases with the particle speed and particle size. The erosion wear is the most serious when the erosion angle is 30°. The erosion regression prediction is also carried out. The regression models of the mass loss and wall thickness reduction of the specimens are established and verified. The optimization analyses of the erosion influence parameters are carried out, and the best parameters to reduce erosion and wear are obtained. The research results can provide a reference for understanding the damage mechanism of the ball valve sealing surface under the gas-solid erosion, and provide a guarantee for the safety of on-site operations.
作者
彭东华
董绍华
王志强
张来斌
孙玄
Peng Donghua;Dong Shaohua;Wang Zhiqiang;Zhang Laibin;Sun Xuan(College of Safety and Ocean Engineering,China University of Petroleum(Beijing);Pipeline Technology and Safety Research Center,China University of Petroleum(Beijing);Beijing Aolanshi Technology Co.,Ltd.)
出处
《石油机械》
北大核心
2021年第5期131-137,共7页
China Petroleum Machinery
基金
国家重点研发计划项目“油气管道及储运设施完整性评价技术研究”(2016YFC0802100)
“国家石油及天然气储备库安全保障技术与装备研发”(2017YFC0805800)
中国石油大学(北京)-中石油战略合作科技专项“‘一带一路’海外长输管道完整性关键技术研究与应用”(ZLZX2020-05)。
关键词
气固冲蚀
球阀
密封面
定量试验
方差分析
完全析因设计
gas-solid erosion
ball valve
sealing surface
quantitative test
variance analysis
full factorial design
