基于油液监测的大型船舶艉管异常磨损故障分析  

Abnormal Wear Failure Analysis of Large Ship’s Stern Tube Based on Oil Monitoring

作　　者：黎秋莹 贺石中 李秋秋 何伟楚 覃楚东 杨智宏 LI Qiuying;HE Shizhong;LI Qiuqiu;HE Weichu;QIN Chudong;YANG Zhihong(Equipment Lubrication and Testing Research Institute,Guangzhou Mechanical Engineering Research Institute Co.,Ltd,Guangzhou Guangdong 510530;National and Local Joint Engineering Research Center of Industrial Friction and Lubrication Technology,Guangzhou Guangdong 510530)

机构地区：[1]广州机械科学研究院有限公司,设备润滑与检测研究所,广东广州510530 [2]工业摩擦润滑技术国家地方联合工程研究中心,广东广州510530

出　　处：《润滑与密封》2021年第5期137-141,共5页Lubrication Engineering

基　　金：广州开发区国际合作项目(2018GH12);国家重点研发计划项目(2018YFB2001604)。

摘　　要：针对某船舶艉管异常发热的故障,分析该船舶的故障背景,对艉管的新油和在用油样品进行理化指标、光谱元素、红外光谱和铁谱磨粒分析,发现该艉管存在油品混用的情况,且艉管的轴瓦磨损严重。根据最小油膜厚度公式的计算结果,发现磨损颗粒的尺寸大大超过了艉管的润滑油膜厚度,因而造成了艉管的急剧磨损。综合分析得出,混油引起润滑油性能下降而造成轴瓦的严重磨损,是造成轴瓦异常发热的根本原因。Aimed at the failure of abnormal heat generation in a ship’s stern tube,the fault background of the ship was analyzed.Through the physical and chemical index analysis,spectral element analysis,infrared spectrum analysis,and ferrography abrasive analysis of the new oil and used oil samples of the ship’s stern tube,it is found that the lubricating oil of the stern tube is mixed with other oil,and the bearing of the stern tube is seriously worn.According to the calculation results of the minimum oil film thickness formula,it is found that the size of the wear particles greatly exceeds the thickness of the lubricating oil film of the stern tube,resulting in the sharp wear of the stern tube.The comprehensive analysis shows that the mixed oil causes the poor performance of the lubricating oil,resulting in the serious wear of the bearing bush,which is the main cause of the abnormal heating of the bearing bush.

关 键 词：艉管 故障分析 油液监测 油膜厚度 异常磨损 

分 类 号：TH17[机械工程—机械制造及自动化]