船用发电机冷却器隔振设计及模态分析  

Vibration Isolation Design and Modal Analysis of Marine Generator Cooler

作　　者：范芳蕾[1,2] 余宏涛 章国庆[1] 张克义[1] FAN Fang-lei1,2 , YU Hong-tao1,ZHANG Guo-qing1, ZHANG Ke-yi1(1.Jiangxi Province Engineering Research Center of New Energy Technology and Equipment, East China University of Technology,Jiangxi Nanchang 330013, China;2.Nanchang ABB Generator Co., Ltd.,Jiangxi Nanchang 330096, Chin)

机构地区：[1]东华理工大学江西省新能源工艺及装备工程技术研究中心,江西南昌330013 [2]南昌ABB发电机有限公司,江西南昌330096

出　　处：《机械设计与制造》2018年第8期192-194,198,共4页Machinery Design & Manufacture

基　　金：江西省重大研发专项(20161BBE50073)

摘　　要：为减小机组运行时冷却器的振动,提出一种新型的冷却器隔振设计。基于被动隔振系统模型,计算不同排布隔振系统的隔振效果,确定弹性支撑件数量及排布。利用有限单元法对具有新隔振设计系统的发电机本体进行建模与模态分析,以获取前20阶模态的固有频率和振型。通过动态系统建模与分析,得到结构模态参数。应用LMS振动及动态信号分析仪对冷却器进行了模态测试与分析,验证了有限元计算模型的正确性,并进一步验证了冷却器隔振设计的可行性和有效性。In order to reduce cooler vibration during gen-set running,one new vibration isolation design for generator cooler is proposed. Base on passive vibration isolation model,vibration isolation effect is calculated for different configuration,the quantity and configuration of dampers have been fixed. By using FEM method to create the modeling and perform modal analysis for generator with new cooler vibration isolation design,natural frequencies and mode shapes for the first 20 th modes are calculated. Structural modal parameters are obtained through dynamic system modeling and analysis. Modal test and analysis has been executed with LMS Scadas Mobile,to verify the accuracy ofmodal analysis results of FEM,and the feasibility and effectiveness of cooler vibration isolation design has been validated.

关 键 词：隔振设计 被动隔振系统 模态分析 固有频率 振型 激振 

分 类 号：TH16[机械工程—机械制造及自动化] TH122