Comparison of the Load-Carrying Performance of Mechanical Gas Seals Textured With Microgrooves and Microdimples
Comparison of the Load-Carrying Performance of Mechanical Gas Seals Textured With Microgrooves and Microdimples
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DOI：
10.1115/1.4031435
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发表时间：
2016-04
影响因子：
2.5
通讯作者：
Liping Shi;W. Xiuying;S. Xiao;Wei Huang;Xiaolei Wang
中科院分区：
文献类型：
--
作者：
Liping Shi;W. Xiuying;S. Xiao;Wei Huang;Xiaolei Wang
比较了微槽和微坑对机械气体密封承载性能的影响。采用基于可压缩牛顿流体雷诺方程的数值模型，研究了气体密封的动压、承载力和气膜刚度等承载性能。结果表明，微槽和微凹都能提高机械气体密封的承载性能，特别是在小间隙条件下。此外，不同的纹理模式实现最佳的承载性能在不同的面积密度，密封间隙，和深度：微槽具有较低的面积密度可以获得更高的承载力和气膜刚度比凹坑图案，但与高的面积密度，椭圆形凹坑产生更好的承载性能比槽图案。[DOI 10.1115/1.4031435]
The effects of microgrooves and microdimples on the load-carrying performance of mechanical gas seals are compared in this study. Numerical model based on the Reynolds equation for compressible Newtonian fluid is utilized to investigate the load-carrying performance including the hydrodynamic pressure, the load-carrying force, and gas film stiffness of the gas seals. The results indicate that both microgrooves and microdimples can improve the load-carrying performance of mechanical gas seals, particularly under a small clearance condition. Furthermore, different texture patterns achieve optimal load-carrying performance at different area density, seal clearance, and depth: microgrooves with a low area density can obtain higher load-carrying force and gas film stiffness than the dimple patterns, but with high area density, elliptical dimples yield better load-carrying performance than the groove patterns. [DOI: 10.1115/1.4031435]