| 多瓦可倾瓦径向滑动轴承热润滑性能分析 |
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| 引用本文： | 黎伟,陈志祥,汪久根.多瓦可倾瓦径向滑动轴承热润滑性能分析[J].润滑与密封,2011,36(12). |
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| 作者姓名： | 黎伟 陈志祥 汪久根 |
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| 作者单位： | 1. 浙江大学机械工程学系 浙江杭州310027
2. 浙江富春江水电设备有限公司 浙江杭州310013 |
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| 基金项目： | 博士点基金项目(J20081235); 浙江省自然科学基金重点项目(Z1100475) |
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| 摘 要： | 考虑变黏度、密度的情况,建立多瓦可倾瓦径向滑动轴承的数学模型,用有限差分法求解其热流体动力润滑(THD)模型,分别计算12块瓦可倾瓦径向滑动轴承的最小油膜、压力分布和三维温度场分布,分析不同载荷、不同转速、不同润滑油黏度等对轴承各瓦的热润滑性能影响。结果显示,建立的模型及其计算程序能计算分析多瓦可倾瓦径向滑动轴承的热润滑问题。润滑油黏度和转子转速对多瓦可倾瓦径向滑动轴承的热润滑性能有较大的影响;瓦块绕支点的倾斜以及瓦块所处的角度位置会影响部分瓦块的热润滑性能,出现与普通圆形径向滑动轴承不一致的润滑性能变化。
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| 关 键 词： | 多瓦可倾瓦径向滑动轴承 THD 压力分布 油膜厚度 温度分布 |
Thermal Hydrodynamic Lubrication Analysis of Tilting-pad Journal Bearing with Multiple-pads |
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| Li Wei,Chen Zhixiang,Wang Jiugen.Thermal Hydrodynamic Lubrication Analysis of Tilting-pad Journal Bearing with Multiple-pads[J].Lubrication Engineering,2011,36(12). |
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| Authors: | Li Wei Chen Zhixiang Wang Jiugen |
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| Affiliation: | Li Wei1 Chen Zhixiang2 Wang Jiugen1(1.Department of Mechanical Engineering of Zhejiang University,Hangzhou Zhejiang 310027,China,2.Zhejiang Fuchunjiang Hydropower Equipment Co.,Hangzhou Zhejiang 310013,China) |
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| Abstract: | The journal bearings with multiple tilting pads are widely used to support the shaft assembly of turbo generators.With the considerations of variable viscosity and density,a model of tilting-pad journal bearing with multiple-pads was established,and was analyzed using finite difference method.A computer program was developed to calculate the minimum film thickness,pressure distribution and three-dimensional temperature distribution of each pad,and the effects of radial loads,rotational speeds and oil viscos... |
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| Keywords: | multi-tilting-pad journal bearing THD pressure distribution film thickness temperature distribution |
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