摘要
目的 研究氟塑料磁力泵中干摩擦轴承端面异常磨损现象,揭示泵内介质流动特性。方法 基于SIMPLEC压力-速度耦合算法和SST k-ω湍流模型,应用FLUENT软件,进行氟塑料磁力泵全流场数值模拟研究;通过数值计算得出氟塑料磁力泵全流场轴截面、叶轮截面和轴承间隙流道介质流速和压力的分布规律。结果 叶轮压水室流道内压力分布合理,总体压力随着流量的增大而减小;但因进口管道流入的介质同平衡孔回流介质发生碰撞,叶轮流道内介质流动紊乱;同时,干摩擦轴承进出口过大的压力差是造成干摩擦轴承异常磨损的主要原因。结论 研究成果可为氟塑料磁力泵性能优化及解决干摩擦轴承端面异常磨损问题提供理论依据。
The overflow part of the fluoroplastic magnetic pump is completely lined with fluorine.the cooling circulating medium flows back to the impeller through the bearing clearance and the balanced hole.In order to study the abnormal wear phenomenon of the dry friction bearing of the fluoroplastic magnetic pump and reveal the flow characteristics of the medium in the pump, based on the SIMPLEC pressure-velocity coupling algorithm and the SST k-ω turbulence model, the FLUENT software was used to conduct a numerical simulation study of the full flow field of the fluoroplastic magnetic pump.The results show that the pressure distribution in the flow channel of the impeller and volute is reasonable, and the overall pressure decreases with the increase of the flow;but because the medium flowing in the inlet pipe collides with the return medium of the balance hole, the flow of the medium in the impeller flow channel is turbulent.The excessive pressure difference between the inlet and outlet of the friction bearing is the main reason for the abnormal wear of the dry friction bearing.
作者
魏春雨
姜辰尧
WEI Chunyu;JIANG Chenyao(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报(自然科学版)》
CAS
北大核心
2023年第1期169-176,共8页
Journal of Shenyang Jianzhu University:Natural Science
基金
国家自然科学基金项目(51705342)。
关键词
氟塑料磁力泵
全流场
数值模拟
内部流动特性
fluoroplastic magnetic pump
full flow field
numerical simulation
internal flow characteristics