汽轮发电机径切两向空冷系统转子温度场的计算方法 |
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引用本文: | 李伟力,侯云鹏,周封,Я.Б.Данилевич,程树康.汽轮发电机径切两向空冷系统转子温度场的计算方法[J].中国电机工程学报,2000,20(8):74-78. |
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作者姓名: | 李伟力 侯云鹏 周封 Я.Б.Данилевич 程树康 |
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作者单位: | 1. 哈尔滨工业大学,黑龙江省,哈尔滨市,150001 2. 哈尔滨理工大学,黑龙江省,哈尔滨市,150040 3. 俄罗斯科学院电力问题研究所 |
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基金项目: | 黑龙江省自然科学基金资助! (E982 7) |
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摘 要: | 以俄罗斯电力问题研究所生产的转子带有副槽和径向通风沟的20MW、2极汽轮发电机为例,给出了转子求解域中的热传导方程和相应的泛函方程,并采用有限元方法计算了当转子副槽和径向通风沟沿转子轴变截面和变步长分布时的温度场。同时,根据流体相似理论计算了转子通风沟内流体速度和表面散热系数,给出了该电机计算结果。
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关 键 词: | 汽轮发电机 径切两向空冷系统 转子 温度场 |
修稿时间: | 1999-06-28 |
CALCULATING METHOD OF ROTOR TEMPERATURE FIELDS OF TURBO-GENERATOR WITH RADIAL AND TANGENTIAL AIR-COOLING SYSTEM |
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Abstract: | In this paper, the heat conducting
equation and corresponding functional equation of the solved region are presented on the
basis of an example of 20?MW 2-poles turbo-generator with sub-slots and radial
ventilating-grooves in rotor manufactured by the Russian Academy of Power Affairs. Finite
element method is applied to calculate the temperature fields when rotor subslots and
radial ventilating-grooves distribute along the rotor axis in varying-section and
varying-step way. According to the theory of fluid mechanics, the equivalent network chart
of air speed distribution of the rotor ventilation-grooves and surface heat-sinking
coefficient are calculated. |
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Keywords: | turbo generator radial and tangential air cooling system rotor temperature fields |
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