水砂两相流弯管接头处冲蚀磨损研究  

Research on Erosion Wear at Elbow Joint of Water-sand Two-phase Flow

作　　者：周亚东 滕振超[1,2,3] 刘凯琪 滕云超 计静 刘佳琳[1] ZHOU Ya-dong;TENG Zhen-chao;LIU Kai-qi;TENG Yun-chao;JI Jing;LIU Jia-lin(School of Civil Engincering and Architectural Engincering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Key Laboratory of Disaster Prevention,Mitigation and Protection Engineering in Heilongjiang Province,Daqing Heilongiang 163318,China;Key Laboratory of Earthquake Engineering and Engineering Vibration,Instiute of Engineering Mechanics,China Seismological administration,Harbin Heilongjiang 150086,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]黑龙江省高校防灾减灾与防护工程重点实验室,黑龙江大庆163318 [3]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150086

出　　处：《当代化工》2022年第7期1695-1699,1737,共6页Contemporary Chemical Industry

基　　金：国家自然科学基金(项目编号:51176024);中国地震局工程力学研究所基本科研业务费专项资助项目(项目编号:2020007)。

摘　　要：为了研究水砂两相流对管道接头处的冲蚀磨损问题,基于流体动力学理论和固液两相流理论建立Fluent 冲蚀模型。采用控制变量法模拟水相速度、砂粒质量分数、砂粒直径及流体冲角等多种因素耦合作用对弯管的冲蚀规律,再采用灰色关联分析法对冲蚀数据进行分析。结果表明:随着水相速度增大,弯管最大冲蚀率增大,而当流速超过 10 m·s^(-1)时,冲蚀磨损程度变化明显;随着砂粒直径增大,弯管最大冲蚀率逐渐下降,而当粒径大于 100 μm,微粒数目成为主要影响因素;随着砂粒质量分数增大,弯管最大冲蚀率可用线性增长函数拟合,而微粒质量分数在 0.8%至 1.2%时磨损明显。提出降低流速并减少砂粒质量分数的减缓冲蚀的建议。In order to study the erosion and wear of pipeline joints caused by water-sand two-phase flow, the Fluent erosion model was established based on the theory of fluid dynamics and solid-liquid two-phrase flow. The controlled variable method was used to simulate the erosion law of the elbow by the coupling effect of multiple factors such as water phase velocity, sand mass fraction, sand diameter and fluid attack angle. Then the Grey Relational Analysis method was used to analyze the erosion data. The results showed that with the increase of the water phase velocity, the maximum erosion rate of the elbow increased, and when the flow velocity exceeded 10 m·s^(-1), the erosion wear degree changed significantly. As the sand particle diameter increased, the maximum erosion rate of the elbow gradually decreased, and when the particle diameter was greater than 100 μm, the number of particles became the main influencing factor. With the increase of the sand mass fraction, the maximum erosion rate of the elbow could be fitted by a linear growth function, and the wear was obvious when the particle mass fraction was 0.8%~1.2%.Suggestions were put forward to reduce the flow rate and reduce the sand mass fraction to reduce the erosion.

关 键 词：冲蚀 水砂两相流 计算流体力学 灰色关联分析法 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]