单元组合潜油永磁电机流热耦合温升模型研究  

Flow-thermal Coupling Temperature Rise Model of Modular Submersible PM Motor

作　　者：张炳义[1] 刘忠奇[1] 冯桂宏[1] 

机构地区：[1]沈阳工业大学电气工程学院

出　　处：《石油机械》2015年第8期98-102,共5页China Petroleum Machinery

基　　金：国家863计划项目"采油井筒控制工程关键技术与装备"(2012AA061303);国家自然科学基金项目"采用单元模块组合式定子的新型低速大功率同步电机研究"(51177106)

摘　　要：潜油电机长期工作在高温、高压的井液中,无法实时监测其运行温度,可能导致电机过热烧毁。为此,建立了潜油永磁电机室内流热耦合温升模型,通过经验公式初算电机各部件的导热系数和散热系数,进行3D有限元温升计算,得到了室内模型各部件的温度分布情况。并基于0.5 k W样机室内温升试验数据对相关导热系数及散热系数进行修正。将优化后的数据导入到单元组合潜油电机井下流热耦合温升模型中。建立电机机壳外侧的原油对流换热边界条件和定、转子之间的润滑油对流换热边界条件,得到了准确的潜油电机井下流热耦合温升模型,为潜油电机热负荷的选取提供了可靠的理论依据。Submersible motor works in high?temperature and high?pressure well fluids for a long term and its running temperature cannot be monitored in real time so as to cause motor overburning?For the reason, an indoor flow?thermal coupling temperature rise model is built for the modular submersible pm motor?Thermal conductivity coefficient and heat emission coefficient are preliminarily calculated by empirical formula to conduct 3D finite ele?ment temperature rise calculation in order to obtain temperature distribution of indoor model components?Relevant thermal conductivity coefficient and heat emission coefficient are modified based on temperature rise test data of 0?5 kW prototype?Optimized data is imported into downhole flow?thermal coupling temperature rise model of modular submersible motor?Boundary conditions for heat convection of crude oil outside motor shell and those for heat con?vection of lubricants between rotors are built to obtain an accurate downhole flow?thermal coupling temperature rise model of modular submersible motor in order to provide a reliable theoretical basis for selection of thermal load for the submersible motor.

关 键 词：单元组合 潜油永磁电机 流热耦合 温升模型 

分 类 号：TE355.5[石油与天然气工程—油气田开发工程]