Thermoelastohydrodynamic behaviour of inclined-ellipse dimpled gas face seals
Thermoelastohydrodynamic behaviour of inclined-ellipse dimpled gas face seals
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DOI：
10.1007/s11431-016-0561-5
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发表时间：
2016-11
期刊：
影响因子：
--
通讯作者：
S. Ding;S. Bai
中科院分区：
文献类型：
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作者：
S. Ding;S. Bai
分析了斜椭圆凹坑气体面密封件的热弹流体动力性能。考虑了热变形和弹性变形，给出了气膜的压力分布以及密封环和气膜的温度场。然后，研究了在不同的工作参数（例如转速和密封压力）下，织构参数（包括凹坑倾角和凹坑深度）对密封性能的影响。结果表明，面变形会导致高转速下流体动力效应的减弱。分析表明，当转速从0增加到35000 r min−1时，开启力可降低50%以上。端面变形对密封性能的影响，如开启力和泄漏特性，随着转速的升高而逐渐增大。
The thermoelastohydrodynamic performance of an inclined-ellipse dimpled gas face seal is analyzed. The pressure distributions of the gas film and temperature fields of the seal rings and gas film are presented considering thermal and elastic distortions. Then, the influences of texturing parameters, including dimple inclination angle and dimple depth, on sealing performance are investigated under different operating parameters such as rotational speeds and seal pressures. The results show that face distortions lead to a decrease in the hydrodynamic effect at high rotational speed. The analysis shows that the opening force can decrease by more than 50% as the rotational speed increases from 0 to 35000 r min−1. The influence of face distortion on the seal performance, such as opening force and leakage characteristic, gradually increases with the rotational speed.