中国电力 ›› 2014, Vol. 47 ›› Issue (1): 81-85.DOI: 10.11930/j.issn.1004-9649.2014.1.81.4

• 发电 • 上一篇    下一篇

水轮发电机定转子动态气隙分析研究

陈光辉1, 吴和静2, 钟苏1, 吕桂萍1, 庞立军1, 王燕1, 田超1   

  1. 1. 水力发电设备国家重点实验室,黑龙江 哈尔滨 150040;
    2. 黑龙江东方学院,黑龙江 哈尔滨 150086
  • 收稿日期:2013-10-12 出版日期:2014-01-31 发布日期:2015-12-18
  • 作者简介:陈光辉(1979-),男,吉林长春人,工程师,从事水轮发电机组结构分析与振动测试研究工作。E-mail: chen_hec@126.com
  • 基金资助:
    国家重点基础研究发展计划(973计划)资助项目(2010CB736208)

Study on the Dynamic Air Gap Between Stator and Rotor of the Hydro-Generators

CHEN Guang-hui1, WU He-jing2, ZHONG Su1, LV Gui-ping1, PANG Li-jun1, WANG Yan, TIAN Chao1   

  1. 1. State Key Laboratory of Hydro-Power Equipment, Harbin 150040, China;
    2. East University of Heilongjiang, Harbin 150086, China
  • Received:2013-10-12 Online:2014-01-31 Published:2015-12-18
  • Supported by:
    This work is supported by National Basic Research Program of China (973 Program) (2010CB736208)

摘要: 为了解决机组的实测气隙比设计气隙偏小的问题,有必要寻找影响定转子之间动态气隙的主要因素。通过有限元法与电厂实测数据进行比对,对某电站水轮发电机定转子动态气隙进行分析研究发现,真实模拟转子支架与磁轭之间的热打键紧量是分析定转子之间气隙变化的先提条件;在过渡工况下,变转速产生的离心力、材料的弹性模量和定转子热膨胀变形对气隙变化均有一定的影响,为解决水轮发电机定转子之间动态气隙变小问题提供相关参考依据。

关键词: 动态气隙, 影响因素, 有限元分析, 水轮发电机, 转子, 定子

Abstract: In order to solve the problem that the working air gap of generator units is smaller than the designed air gap, it is necessary to analyze the influencing factors. Based on a comparison of the finite element analysis and the testing data of a power station, a study is made on the dynamic air gap between the stator and rotor of the hydro-generator, which shows that the simulation of the hot manipulation between rotor spider and magnetic yoke is the precondition for analyzing the air gap variation between stator and rotor gap; under transition condition, the centrifugal force produced by variable speeds, the material elastic modulus and the thermal expansion deformation of the rotor and stator have various influence on the air gap.

Key words: dynamic air gap, influencing factor, finite element analysis, hydro-generator, rotor, stator

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