基于反应谱法的轴流式冷却塔风机抗震分析及优化  

Seismic Analysis and Optimization of Axial Flow Cooling Tower Fan Based on Response Spectrum Method

作　　者：杨鹏[1] 秦未[1] 叶奔[1] 杨徽[1] YANG Peng QIN Wei YE Ben YANG Hui(School of Mechanical Engineering ＆Automation, Zhejiang Sci-Teeh University,Hangzhou 310018, China)

机构地区：[1]浙江理工大学机械与自动控制学院,浙江杭州310018

出　　处：《成组技术与生产现代化》2017年第2期18-23,29,共7页Group Technology & Production Modernization

基　　金：浙江省科技厅公益性技术应用研究计划资助项目(2017C34007);浙江省重点科技创新团队资助项目(2013TD18)

摘　　要：基于二级地震设计法对核级冷却塔风机进行抗震分析,采用ANSYS Workbench软件对模型进行前处理后的静力分析、基于预应力的模态分析和谱分析.采用Desing Assement模块,将冷却塔风机静力分析和谱分析的计算结果叠加,得到了组合工况下的总变形及应力分布图.对叶片优化后风机进行有限元计算的结果表明:优化与未优化的风机都能够满足强力和刚度要求;优化后风机节约了142.5kg的玻璃钢纤维,减小了设备的质量.Nuclear cooling tower fan is an important ventilation cooling equipment in nuclear power plant, which requires high strength and rigidity of the whole structure. Seismic analysis of wind turbine is based on two level seismic design method, Using ANSYS Workbench software to prepro-cess the model,and carrying on the static analysis, Modal analysis based on prestress and spectrum analysis ;the Desing Assement module is used to calculate results of the cooling towerFan from the static and spectral analysis, finally obtaining stress and deformation under the condition of combination;The finite element method is used to calculate fan of optimized blades with the same step as mentioned above. The results show that thenon optimized and optimized and fan can meet the requirements of strength and stiffness, and the optimized wind power can save 142.5 kg of the glass fiber and reduce the weight.

关 键 词：冷却塔风机 抗震分析 组合工况 结构优化 

分 类 号：TH443[机械工程—机械制造及自动化]