高速圆柱滚子轴承环下润滑热场特性

王轶泽; 刘红彬; 孟永钢

doi:10.13224/j.cnki.jasp.20210583

高速圆柱滚子轴承环下润滑热场特性

doi: 10.13224/j.cnki.jasp.20210583

1.
河南科技大学机电工程学院，河南洛阳 471003
2.
清华大学摩擦学国家重点实验室，北京 100084

基金项目: 国家科技部专项（2018YFB2000203）；国家自然科学基金（52175086）

详细信息

作者简介:
王轶泽（1999-），男，硕士生，主要从事轴承润滑及力学性能分析研究

中图分类号: V233.4⁺53；TH133.3
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- 文章访问数: 31
- HTML浏览量: 21
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- 被引次数: 0
出版历程
- 收稿日期: 2021-10-14
- 网络出版日期: 2023-12-28

Study on thermal field characteristics of high speed cylindrical roller bearing under ring lubrication

1.
School of Mechatronics Engineering，Henan University of Science and Technology，Luoyang Henan 471003，China
2.
State Key Laboratory of Tribology，Tsinghua University，Beijing 100084，China

摘要

摘要:
针对高速圆柱滚子轴承高温失效问题，采用流体体积（VOF）方法和多重参考系（MRF）模型对圆柱滚子轴承内圈供油槽和轴承腔进行建模，计算供油槽油液供给情况并将结果施加到轴承腔内模型中，计算环下进油孔相对于滚子多个位置处的温升，并通过加权平均得到轴承腔内最终温升。分析轴承转速、供油量对轴承腔内摩擦温升和润滑油黏性剪切温升的影响规律。结果表明：轴承供油量一定时，转速越高，轴承内部组件摩擦加剧，腔内润滑油受到的黏性剪切力增大，摩擦、黏性温升均升高；轴承转速一定时，由于油量增加造成的润滑油黏性剪切温升的增加和冷却效果的提高在油量较低时前者高于后者，随后两者逐渐持平，黏性温升先下降然后维持在一定水平，摩擦温升降低。该研究对高速圆柱滚子轴承环下润滑设计提供了参考依据。
- 高速圆柱滚子轴承 /
- 环下润滑 /
- 轴承腔 /
- 计算流体动力学（CFD） /
- 热场
Abstract:
To solve the problem of high temperature failure of cylindrical roller bearing under high-speed operation, volume of fluid (VOF) method and multiple reference frame (MRF) model were used to model the oil supply groove and bearing cavity of cylindrical roller bearing inner ring, respectively, the oil supply situation of the oil supply groove was calculated and the result was applied to the bearing cavity model. The temperature rise of the oil inlet hole under the ring relative to the roller was calculated, and the final temperature rise in the bearing cavity was obtained by weighted average. The effects of bearing speed and oil supply rate on the temperature rise of friction in bearing chamber and the temperature rise of lubricating oil viscous shear were analyzed. The results showed that when the oil supply rate of the bearing was constant, the higher rotational speed indicated all the increase in the friction of the internal components of the bearing, the viscous shear force of the lubricating oil in the cavity and the friction and viscous temperature rise. When the bearing speed was constant, the increase of lubricating oil viscosity shear temperature rise and the improvement of cooling effect caused by the increase of oil content were higher than the latter when the oil content was low, and then these two were gradually flat. The viscosity temperature rise first decreased and then stayed at a certain level, while the friction temperature rise decreased. This study can provide a reference for lubrication design of high-speed cylindrical roller bearing ring.
- high speed cylindrical roller bearing /
- under ring lubrication /
- bearing cavity /
- computational fluid dynamics (CFD) /
- thermal field

HTML

图 1 内圈油槽建模区域示意图

Figure 1. Schematic diagram of modeling area of inner ring oil groove

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图 2 内圈油槽模型

Figure 2. Model of inner ring oil groove

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图 3 轴承腔内模型

Figure 3. Bearing cavity model

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图 4 计算位置示意图

Figure 4. Schematic diagram of calculating position

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图 5 内圈油槽计算云图

Figure 5. Cloud chart for calculation of inner race oil groove

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图 6 供油量不同时轴承内外圈、滚子油相分布

Figure 6. Oil phase distribution in bearing inner and outer rings, rollers with different oil supply

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图 7 供油量不同时轴承腔内润滑油温度流线图

Figure 7. Temperature streamline of lubricating oil in the bearing cavity with different oil supply

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图 8 供油量不同时轴承腔内温升

Figure 8. Temperature rise in bearing cavity with different oil supply

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图 9 供油量不同时轴承腔内黏性、摩擦温升占总温升比例

Figure 9. Proportion of viscosity and friction temperature rise in the bearing cavity to the total temperature rise with different oil supply

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图 10 不同转速下轴承内外圈、滚子油相分布

Figure 10. Oil phase distribution in bearing cavity at different speeds

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图 11 转速不同时轴承腔内温升

Figure 11. Temperature rise in bearing cavity with different speed

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图 12 转速不同时轴承腔内黏性、摩擦温升占总温升比例

Figure 12. Proportion of viscosity and friction temperature rise in the bearing cavity to the total temperature rise with different speed

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表 1 圆柱滚子轴承基本参数

Table 1. Basic parameters of cylindrical roller bearings

参数	数值
外圈直径/mm	194
内圈直径/mm	144
滚子个数	30
滚子长度/mm	12
滚子直径/mm	12

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表 2 不同转速时轴承的生热状态

Table 2. Heat generation state of bearings with different speed

转速n/ （r/min）	总生热量 Q/W	外圈热流密度 q_o/（W/m²）	内圈热流密度 q_i/（W/m²）	滚子热流密度 q_r/（W/m²）
10000	883.01	35292.19	40880.12	37542.97
12000	1155.28	46174.22	53485.13	49119.00
14000	1453.37	58088.42	67285.76	61793.04
16000	1775.99	70982.84	82221.79	75509.81
18000	2122.06	84814.63	98243.62	90223.73

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表 3 计算参数

Table 3. Calculation parameters

参数	主相（空气）	次相（4050航空润滑油）
密度/（kg/m³）	1.225	960
黏度/（Pa·s）	1.79×10⁻⁵	1.733×10⁻³

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表 4 供油量为9.7 L/min时进油孔流速、油相体积分数

Table 4. Oil inlet flow rate and oil phase volume fraction when the oil supply is 9.7 L/min

转速/（r/min）	进油孔1流速/（m/s）	进油孔1油相体积分数	进油孔2流速/（m/s）	进油孔2油相体积分数
10000	12.2	1	6.5	1
12000	13.4	1	5.5	1
14000	14.2	1	5.2	0.92
16000	14.5	1	5.4	0.82
18000	15.9	1	5.4	0.56

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表 5 转速为14000 r/min时进油孔流速、油相体积分数

Table 5. Oil inlet flow rate and oil phase volume fraction when speed is 14000 r/min

供油量/（L/min）	进油孔1流速/（m/s）	进油孔1油相体积分数	进油孔2流速/（m/s）	进油孔2油相体积分数
5.7	9.6	1	4.8	0.27
7.7	12.5	1	4.7	0.53
9.7	14.2	1	5.2	0.92
11.7	15.6	1	7.3	1
13.7	17.8	1	8.9	1

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