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为确定可行的水力清管方案,对成品油管道内杂质沉积运移规律、影响因素及杂质沉积对管道的影响等方面内容开展了研究。设计建造了室内成品油携水携杂质试验环道,可以开展不同倾角、口径成品油管道内杂质运移沉积规律测试、内腐蚀特性测试;利用Fluent-DEM耦合的数值方法,开展了不同工况下固体颗粒在成品油管道内的运移特性研究。试验测试结果与数值模拟数据的吻合度较高,说明数值模拟方法具有较高的可靠性。基于试验与数值模拟手段,研究了杂质沉积特性、临界运移流速、沉积特性的影响因素以及杂质沉积对管道内腐蚀的影响。研究发现:固体颗粒通常沉积在上倾-水平管道弯头的后方,并获得了流速、管道倾角、口径、固体颗粒的密度和球度等参数对固体颗粒运移特性的影响规律,得到了杂质沉积对成品油下方积水的运移及管道内腐蚀特性的作用机理。
In order to determine the feasible hydromechanical management plan, the research on the rules of deposition and transport of impurities in the oil product pipeline, the influencing factors and the influence of impurity deposition on the pipeline are carried out. Design and construction of indoor oil carrying water-carrying impurities test loop, can carry out different dip angle, oil product pipeline of impurities migration and deposition rules, internal corrosion testing; using Fluent-DEM coupling numerical method, carried out under different conditions Transport Characteristics of Lower Solid Particles in Product Oil Pipeline. The test results are in good agreement with the numerical simulation data, which shows that the numerical simulation method has high reliability. Based on the experimental and numerical simulation methods, the influence of impurity deposition characteristics, critical migration velocity, sedimentary characteristics and impurity deposition on corrosion in pipeline were studied. The results show that the solid particles are usually deposited behind the bend of the inclined-horizontal pipe elbow, and the influences of flow velocity, pipe dip angle, caliber, density and sphericity of solid particles on the transport properties of solid particles are obtained, Sedimentation on the product oil under water migration and pipeline corrosion mechanism of action.