磁水复合式水润滑艉轴承设计及其润滑性能研究  

Design and lubrication performance of magnetic-water composite water lubricated stern bearing

作　　者：何涛[1] 徐琛 代路[1] 吕圣 任家舟 施佳皓 赵滨 HE Tao;XU Chen;DAI Lu;LÜSheng;REN Jia-zhou;SHI Jia-hao;ZHAO Bin(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China;Wuxi Military Representative Office of Naval Equipment Department,Wuxi 214122,China;College of Power and Energy Engineering,Harbin Engineering University,Harbin 150006,China)

机构地区：[1]武汉第二船舶设计研究所,武汉430205 [2]海军装备部驻无锡地区军代室,江苏无锡214122 [3]哈尔滨工程大学动力与能源工程学院,哈尔滨150006

出　　处：《船舶力学》2023年第5期700-706,共7页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51809057,52006156)。

摘　　要：推进轴系是舰船艉部振动最重要的激励源,而传统的推进轴系与船体结构通过支承轴承联接,这两部分之间没有相应的减振措施,因此推进轴系上的激励直接作用于船体结构,形成辐射噪声。本文以舰船艉部减振及提高水润滑轴承使用寿命为目的,利用磁力轴承低摩擦、结构简单等优点,设计一种新型磁水复合式水润滑艉轴承,对其摩擦学性能进行数值分析,并与传统水润滑艉轴承的性能进行对比。结果表明,磁水复合式艉轴承在外载荷、转速及轴承间隙相同的情况下,最小液膜厚度变大,最大液膜压力减小,轴承温升降低,说明磁力支承可以有效改善水润滑轴承润滑状态,提升轴承承载能力,减少轴承摩擦损失,可为未来舰船低摩擦艉轴承设计提供新的技术途径。Propulsion shafting is the most important excitation source of ship stern vibration,and the traditional propulsion shafting is connected with the hull structure by bearing.There is no corresponding vibration reduction measure between the two parts,so the excitation acting on the propulsion shafting directly acts on the hull structure which results in radiated noise.In order to reduce the vibration of ship stern and improve the service life of water lubricated bearing,a new type of magnetic-water composite water lubricated stern bearing was designed by using the advantages of low friction and simple structure of magnetic bearings.The tribological properties of the bearing were numerically analyzed and compared with those of the traditional water lubricated stern bearings.The results show that under the same external load,the rotational speed and bearing clearance,the minimum liquid film thickness of the magnetic-water composite stern bearing becomes larger,the maximum liquid film pressure decreases,and the bearing temperature rise decreases;The magnetic support can effectively improve the lubrication state of the water-lubricated bearing,improve the bearing capacity of the bearing,and reduce the friction loss of the bearing,which can provide a new technical approach for the design of low-friction stern bearings of ships in the future.

关 键 词：磁水复合式艉轴承 水润滑 润滑性能 

分 类 号：U674.7[交通运输工程—船舶及航道工程]