论文部分内容阅读
对哈尔滨电气集团生产的新型三缸四排汽660MW超超临界汽轮发电机基础进行动力性能优化研究.采用ANSYS软件进行有限元分析并进行方案优化.采用1∶10模型振动试验预测基础的实际振动特性,确保汽轮发电机基础的设计合理、可靠.进行3个阶段汽轮发电机基础现场振动实测,包括安装后基础的模态分析,机组启动过程中以及机组满负荷运行时基础的振动参数.工程实施采用优化方案减小框架柱截面,将中压缸横向落地剪力墙改为落地中柱加2道横梁,中间层平台采用隔振设计,不仅减少了混凝土用量,而且方便安装,节省工期.机组目前已经稳定运行超过1a,动力特性优良.研究成果可为该型基础的设计定型提供依据.
Harbin Institute of Electric Power Group, the new three-cylinder four-row 660MW ultra-supercritical steam turbine foundation for dynamic performance optimization.Using ANSYS software for finite element analysis and program optimization.Using 1:10 model vibration test to predict the actual Vibration characteristics to ensure the design of the turbine generator is reasonable and reliable.Study the vibration of the foundation of the three stages of the turbine generator, including the modal analysis of the foundation after installation, the basic vibration during the startup of the unit and the full load of the unit The project adopts the optimization scheme to reduce the cross-section of the frame column, the transverse shear wall of the medium-pressure cylinder is changed to the center column plus 2 beams, the vibration isolation design of the middle layer platform not only reduces the amount of concrete but also facilitates the installation, Save the construction period.The unit has been running steadily for more than 1 years and has excellent dynamic characteristics.The research results can provide the basis for the design of the foundation.