中国电力 ›› 2017, Vol. 50 ›› Issue (2): 52-56.DOI: 10.11930/j.issn.1004-9649.2017.02.052.05

• 发电 • 上一篇    下一篇

大型汽轮发电机组轴系静特性分析方法研究

李汪繁1, 蒋俊1, 孙庆1, 王超2, 王坤2   

  1. 1. 上海发电设备成套设计研究院,上海 200240;
    2. 华中科技大学 能源与动力工程学院,湖北 武汉 430074
  • 收稿日期:2016-02-04 出版日期:2017-02-20 发布日期:2017-02-22
  • 作者简介:李汪繁(1988—),男,湖北咸宁人,工程师,硕士,从事转子动力学及透平机械强度振动研究。E-mail:liwangfan@speri.com.cn
  • 基金资助:
    国家科技重大专项课题资助项目(2012ZX06002-017-01-04)

Analysis Method of Shafting Static Characteristics for Large Steam Turbine-Generators

LI Wangfan1, JIANG Jun1, SUN Qing1, WANG Chao2, WANG Kun2   

  1. 1. Shanghai Power Equipment Research Institute, Shanghai 200240, China;
    2. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2016-02-04 Online:2017-02-20 Published:2017-02-22
  • Supported by:
    This work is supported by National Science and Technology Major Project of China (No. 2012ZX06002-017-01-04).

摘要: 大型汽轮发电机组轴系的安装参数直接关系到机组的安全稳定运行,因此需合理设计轴系的安装扬度曲线以确定各轴承标高及载荷等静特性参数,并在安装过程中予以保证。基于三弯矩方程和传递矩阵法,建立了轴系安装扬度曲线的数学计算模型,给出了一种设计计算轴系静特性的方法,并编制了计算程序。以国内某百万千瓦等级汽轮发电机组单支撑轴系为研究对象,在给定边界条件下进行了静特性分析,计算结果与有限元分析反推结果对比,验证了该方法的准确性,为指导大型机组轴系的安装提供技术参考。

关键词: 汽轮发电机组, 轴系, 安装扬度曲线, 轴承标高, 传递矩阵法

Abstract: The installation parameters of the shafting for large steam turbine-generators are directly related to the safe and stable operation of the unit. As a result, the installation catenarty curve should be designed reasonably to determine the bearing elevation and the static properties such as the loads, and be ensured during the installation. In this paper, the mathematical model based on the theory of three-moment equation and transfer matrix is established with the method to calculate the shafting’s catenarty curve and static characteristics and the computing program being proposed. Taking a shafting of a 1 000-MW level steam turbine-generator as an example, the catenarty curve and static characteristics of the shafting are calculated under the given boundary conditions and compared to the results of the finite element method. The comparison verifies the accuracy of the method, enabling it to provide technical support for the large shafting installation.

Key words: steam turbine-generator, shafting, catenarty curve, bearing elevation, transfer matrix method

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