工作变形分析方法在发电厂汽水管道振动治理中的应用Application of Operating Deflection Shape Analysis in Steam/Water Piping Vibration Mitigation
陈海鑫,林磊,徐德城
CHEN Haixin,LIN Lei,XU Decheng
摘要(Abstract)：
通过工作变形分析方法处理振动测试数据,可获得管道运行过程中时域和频域内的实际变形特征,以此更有针对性地进行振动治理。以浙江某发电厂给水管道振动治理为案例,采用工作变形分析方法对测试数据进行分析,发现管道上存在的支吊架松动和失效现象,根据管道实际变形特征,制定了减振治理措施,并采用模拟计算验证了此方法的有效性。
The actual deformation properties in time domain and frequency domain during piping operation can be obtained by application of operating deflection shape(ODS) analysis in vibration data processing for vibration mitigation. Based on the feedwater pipe vibration mitigation in a power plant in Zhejiang province,the operating deflection shape analysis is used to analyze the test data. It is found that supporters and hangers on the pipes become loose and failed. In accordance to the actual deformation characteristics of the pipes,vibration mitigation measures are formulated; moreover, simulation calculation is adopted to validate the method.
关键词(KeyWords)：
振动测试;工作变形分析;给水管道;振动治理
vibration test;operating deflection shape(ODS) analysis;feed-water pipe;vibration mitigation
基金项目(Foundation):
作者(Author):
陈海鑫,林磊,徐德城
CHEN Haixin,LIN Lei,XU Decheng
DOI: 10.19585/j.zjdl.2017.03.010
参考文献(References)：
- [1]王乐勤,何秋良.管道系统振动分析与工程应用[J].流体机械,2002,30(4):28-31.
- [2]徐升.600 MW机组高压调节阀振动大的原因分析及处理措施[J].浙江电力,2016,35(1):53-56.
- [3]杨晓伟,李国明,谢澄,等.600 MW机组主再热蒸汽及旁路系统管道支吊架调整与优化[J].浙江电力,2016,35(4):54-58.
- [4]倪振华.振动力学[M].西安:西安交通大学出版社,1988.
- [5]克拉夫,彭津.结构动力学[M].北京:高等教育出版社,2006.
- [6]田昊洋,刘闯,苏勇令,等.基于ODS的特高压电抗器振动测试方法研究[J].华东电力,2014,42(8):1570-1573.
- [7]刘习军,贾启芬.工程振动理论与测试技术[M].北京:高等教育出版社,2006.