某水电站上机架-定子机座系统受力分析及变形研究
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摘要
为保证服役时间较长的水电机组上机架及定子机座的稳定性,采用有限元计算得到某水电站各工况下上机架-定子机座的受力及变形数据,并与现场变形测试数据进行对比,验证建模和有限元计算的合理性及精度。计算及测试结果表明,上机架-定子机座系统在任何工况下都可以满足机组长期稳定运行的需求。所提出的以变形测试结果与有限元计算分析结果对比的方法,是一种能较为可靠地提高建模及计算分析准确度和可信度的方法。
In order to ensure the stability of upper bracket and stator frame of hydroelectric generating units which have operated a long time,the finite element calculation method is adopted to obtain the stresses and deformations of upper bracket and stator frame of a hydropower station under various operation conditions. The calculation results are compared with on-site test data of deformation of upper bracket and stator frame for verifying the rationality and accuracy of modeling and finite element calculation. The calculation and test results show that the upper bracket and stator frame system can meet long-term stable operation of unit under any operation conditions. The method presented herein is a reliable method to improve the accuracy and reliability of modeling and calculation analysis.
In order to ensure the stability of upper bracket and stator frame of hydroelectric generating units which have operated a long time,the finite element calculation method is adopted to obtain the stresses and deformations of upper bracket and stator frame of a hydropower station under various operation conditions. The calculation results are compared with on-site test data of deformation of upper bracket and stator frame for verifying the rationality and accuracy of modeling and finite element calculation. The calculation and test results show that the upper bracket and stator frame system can meet long-term stable operation of unit under any operation conditions. The method presented herein is a reliable method to improve the accuracy and reliability of modeling and calculation analysis.
引文
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[2]徐超.基于ANSYS水轮发电机组关键部件有限元分析[D].长沙:湖南大学,2013.
[3]吕桂萍.水轮发电机组大部件刚强度及动态特性研究[D].沈阳:沈阳工业大学,2004.
[4]毛子首.水轮发电机组上机架-定子系统刚度及动态特性研究[D].大连:大连理工大学,2010.
[5]贾爱青,张修寰,林雪成.阿海定子机座和上机架联合刚强度计算[J].机械工程师,2011(3):110-111.
[6]赵玺,赖喜德,苟秋琴.混流式水轮发电机组上机架疲劳寿命分析[J].水电能源科学,2015,33(8):140-143.
[7]张翀,林长宏.那邦电站发电机主要部件有限元分析[J].水电能源科学,2013,31(9):174-177.