| 引用本文: | 马文生,陈照波,焦映厚,丁竹生,R.G．Kirk.迷宫密封结构与动力学参数影响因素[J].哈尔滨工业大学学报,2012,44(5):58.DOI:10.11918/j.issn.0367-6234.2012.05.011 |
| MA Wen-sheng,MA Wen-sheng,JIAO Ying-hou,DING 2hu-sheng,R. G. KIRK.Effect research of labyrinth seal structure and dynamics parameters[J].Journal of Harbin Institute of Technology,2012,44(5):58.DOI:10.11918/j.issn.0367-6234.2012.05.011 |
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| 摘要: |
| 针对迷宫密封一转子系统的特点，建立密封一转子系统动力学模型，分析转速、入口预旋比、密封间
隙、压差等重要密封参数对密封动力学特性系数的影响．对三维模型的流体动力学( CFD)进行分析，总结出
密封结构和压差对泄漏量的变化规律，并通过与实验的对比分析验证了本方法的正确性．研究结果表明：减
小密封入口预旋速度，适当增大密封间隙，可以减小引起不稳定的交叉刚度系数，提高稳定性．齿宽存在一个
临界值(1. 04 mm)，高于这个临界值时，随着齿宽变大泄漏量变大；低于这个临界值时，随着齿宽变大泄漏量
变小．在相同转速下，随着密封间隙的增大泄漏量增大，压差增大泄漏量增大，腔深增大泄漏量减小 |
| 关键词: 迷宫密封 转子动力学 CFD 泄漏量 动力学参数 |
| DOI：10.11918/j.issn.0367-6234.2012.05.011 |
| 分类号:V231. 96 |
| 基金项目:国家自然科学基金资助项目( 10632040，10872054，
10872055)；黑龙江省自然科学基金重点项目
(ZD200905)；高等学校博士学科点专项基金资助项
目( 20092302110009) |
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| Effect research of labyrinth seal structure and dynamics parameters |
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MA Wen-sheng1,2, MA Wen-sheng1, JIAO Ying-hou1, DING 2hu-sheng2, R. G. KIRK3
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1.School of Mechatronics Engineering, Harbin Institute of Technology, 15001 Harbin, China;2.No. 702 Institute of First Academy of China Aerospace Science and Technology Corporation 100076 Beijing, China;3.Rotor Dynamics Laboratory, Virginia Tech, Blacksburg, 24061 VA , USA
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| Abstract: |
| Numerical method is used for solving rotor-seal nonlinear dynamics equation, so that the dynamics
effects of whirl speed, pre-whirl, labyrinth seal gap, pressure are investigated, and the leakage effects of seal
gap, pressure, labyrinth seal structure are researched. The numerical method is verified to be correct by ex-
periments. The results show that reducing pre-whirl and increasing seal gap can reduce the cross-stiffness coef-
ficients, and improve stability purposes. There is a critical value of tooth width l. 04 mm, the leakage seal in-
creases with the increasing of tooth width when it is more than the critical value, and the leakage seal decrea-
ses with the increasing of tooth width when it is less than the critical value. At the same whirl speed, the leak-
age increases with the increase of labyrinth seal and pressure, and decreases with the decrease of cavity depth |
| Key words: labyrinth seal rotor dynamics CFD leakage dynamics parameters |
