本文对发电机定子端部线圈渐伸线的设计计算方法进行了研究,根据圆的渐开线原理建立了一种新的设计计算方法,并结合MathCAD程序对600MW和1000MW发电机定子端部线圈渐伸线进行了求解。根据求解结果结合PRO/E建模技术完成了600MW发电机和1000MW发电机定子线圈端部渐伸线的三维建模。为定子线圈渐伸线的设计计算分析提供了理论指导和依据,同时为今后PRO/E在产品中的应用打下了良好的基础。

通过加筋圆柱壳理论与有限元方法,研究600MW三段式氢冷汽轮发电机定子与机座的强度和振动问题,建立三段式机座中的弹簧板、定子及机座模型的依据,并对最不利位置的减震弹簧板和定子机座整体的强度问题进行讨论分析;另对机座、定子铁芯及定子机座整体的振动进行有限元分析计算,并对其结果进行讨论.

The failure analysis for main leads of 300?MW water hydrogen turbine generator is presented. The testing and finite element techniques were applied into the analysis of static and dynamic responses of the main leads. Results show the cause of crack failure, which is that micro cracks, caused by vibrating deformation of hanging weight attaching to the main leads, propagates and leads to macro crack to be leaking hydrogen, due to the resonance of main leads when its working frequency tends natural one, that is 48.429?Hz～50?Hz. The improvement design was proposed finally and new design could avoid the resonance to happen.

采用端盖式轴承的大型汽轮发电机机组运行时,定子振动与转子振动相互耦合.如果机座底脚承载状态不理想,则有可能使发电机在运行时产生较大的机座振动.因此,在发电机安装调试阶段进行机座底脚承载调整是一个重要的环节.通过调整垫片使机座四角承载达到合理分布状态,从而可有效保障机座振动的稳定良好.本文介绍了机座底脚承载调整的方法及安装于吴泾第二发电厂的水氢氢600MW汽轮发电机的调试结果.