船用汽轮发电机组异常振动问题原因分析及处理  

Analysis and solution to abnomal vibration of ship steam turbine-generator set

作　　者：彭杉[1] 周振东[1] 刘金宝[1] 郭大泉[1] 

机构地区：[1]中国船舶重工集团公司第七○四研究所,上海200031

出　　处：《舰船科学技术》2008年第5期32-35,共4页Ship Science and Technology

摘　　要：某船电力系统配置有若干台快装式汽轮发电机组,其中1台出现突发性和间歇性异常振动。频谱测试表明,此异常振动为高速轴的半频振动,是轴承的油膜失稳造成的。经综合分析后,通过采取改造轴瓦型式,提高轴承的稳定性,消除了异常振动现象,保证了该汽轮发电机组的可靠运行。There are several soon-install steam turbine generator set in an electric power system of the vessel. Paroxysmal and intermittence vibration occurs at one set. Testing shows that it is half frequency vibration of one high speed shaft which comes from losing property of the bearing oil film. Improving the hearing＇s stability via rebuilding the hearing＇s shape from column to ellipse, the abnormal vibration is avoided.

关 键 词：汽轮发电机组 轴承 失稳 半频振动 对中 

分 类 号：U664.11[交通运输工程—船舶及航道工程] U661.44[交通运输工程—船舶与海洋工程]