张恒,张卫军,胡启龙,李振,张立军,赵博

• 1:西安热工研究院有限公司
• 2:福建福清核电有限公司
• 3:辽宁红沿河核电有限公司

摘要(Abstract)：

以某百万千瓦级核电半速汽轮发电机组为研究对象，采用转子动力学的专业分析软件ARMD，建立弹簧基础-轴承-转子的动力学模型，通过动力学计算获得轴系动力学特性，现场实测轴系临界转速与计算值吻合，验证了该计算模型的准确性。在此基础上计算了发电机密封瓦热不平衡导致的振动响应，发现其振动变化主要集中于发电机转子处，密封瓦动静摩擦仅是轴系振动波动问题的直接影响因素之一，而非根本原因。同时对不同运行状态下密封瓦油膜受力进行分析，发现轴向倾斜对密封瓦受力影响最大，因此机组在检修调整过程中应保证加工及安装工艺，严防密封瓦运行过程中出现轴向倾斜。

关键词(KeyWords)： 核电汽轮机;振动波动;密封瓦;轴向倾斜;ARMD软件

Abstract:

Keywords:

基金项目(Foundation): 西安热工研究院有限公司众创/研究开发基金（GB-22-TYK23）;; 中国华能集团有限公司总部科技项目（HNKJ21-H59）~~

作者(Author): 张恒,张卫军,胡启龙,李振,张立军,赵博

DOI: 10.19666/j.rlfd.202307387

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