轮缘推进电机推力轴承水润滑性能分析  

Numerical Study on Water Lubrication Performance of Thruster Bearing of Rim Propulsion Motor

作　　者：何涛 解忠良[3] 焦见 杨康 代路 马灿 郑召利[1,2] 吴牧云 柯汉兵 HE Tao;XIE Zhongliang;JIAO Jian;YANG Kang;DAI Lu;MA Can;ZHENG Zhaoli;WU Muyun;KE Hanbing(Science and Technology on Thermal Energy and Power Laboratory,Wuhan Hubei 430205,China;Wuhan Second Ship Design and Research Institute,Wuhan Hubei 430205,China;Department of Engineering Mechanics,Northwestern Polytechnical University,Xi'an Shaanxi 710072,China;School of Mechanical-Electric Engineering,Xidian University,Xi'an Shaanxi 710071,China)

机构地区：[1]热能动力技术重点实验室,湖北武汉430205 [2]武汉第二船舶设计研究所,湖北武汉430205 [3]西北工业大学工程力学系,陕西西安710072 [4]西安电子科技大学机电工程学院,陕西西安710071

出　　处：《润滑与密封》2023年第11期135-141,共7页Lubrication Engineering

摘　　要：轮缘推进电机采用海水润滑,由于海水黏度低,难以建立有效的动压润滑效应。同时随着轮缘推进器的推进功率不断提升,其传递的推力也显著升高。这些问题以及需求对轮缘推进器推力轴承的润滑性能提出了新的挑战。提出一种满足轮缘推进电机推进需求的推力轴承设计方案,结合流体动力润滑理论,建立水润滑推力轴承流体动力学模型,基于有限单元法计算了推力轴承的压力分布和最大温度分布,以及雷诺数和摩擦功耗的变化规律。结果表明:该轮缘推进电机推力轴承的压力集中分布在轴瓦中间部分,并随轴瓦倾角和膜厚而变化;温度分布随转速基本保持不变;高速情况下雷诺数大幅降低;摩擦功耗随转速持续增加。The rim propulsion motor is lubricated with seawater.It is difficult to establish an effective dynamic pressure lubrication effect due to the low viscosity of seawater.The thrust also increases significantly as the propulsion power of the rim thruster increases.These problems and requirements propose new challenges to the lubrication performance of the rim thruster thrust bearing.A thrust bearing design scheme to meet the propulsion requirements of rim propulsion motor was presented.A hydrodynamic model of water-lubricated thrust bearing was established combined with the hydrodynamic lubrication theory.Based on the finite element method,the variation laws of the pressure distribution,maximum temperature distribution,Reynolds number and friction power consumption were calculated.The results show that the pressure of the thrust bearing of the rim propulsion motor is concentrated in the middle part of the bearing bush.It varies with the inclination angle and film thickness of the bearing bush.The temperature distribution basically keeps unchanged with speed.A significant decrease in Reynolds number at high speeds.The friction power consumption continues to increase with speed.

关 键 词：轮缘推进电机 水润滑推力轴承 润滑性能 承载性能 

分 类 号：TH133.3[机械工程—机械制造及自动化]