| Li Shuangxi (李双喜),Zhu Liang,Cai Jining,Zhang Qiuxiang,Gao Jinji.[J].高技术通讯(英文),2012,18(4):433~440 |
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| Study on hydrostatic gas lubricated non-contacting mechanical seal |
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| DOI： |
| 中文关键词: |
| 英文关键词: hydrostatic gas lubricated, numerical analysis, opening force, uniform pressure groove, seal structure |
| 基金项目: |
| Author Name | Affiliation | | Li Shuangxi (李双喜) | | | Zhu Liang | | | Cai Jining | | | Zhang Qiuxiang | | | Gao Jinji | |
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| 中文摘要: |
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| 英文摘要: |
| The principle and characteristics of hydrostatic gas lubricated non-contacting mechanical seal (HSGLNMS) are introduced. The flow field of the gas film is established by numerical analysis of end faces of HSGLNMS. The distribution of gas film pressure and seal performance parameters including opening force and leakage are obtained. Influence of operating parameters and sealing configuration on the sealing performance is studied. HSGLNMS has been designed and manufactured. Its working film thickness and leakage are measured to verify the theoretical analysis. The investigation results show that HSGLNMS demonstrates good speed adaptability, which means that the seal runs successfully with both low and high speed, showing excellent performance. The seal can be regulated and controlled online; the opening force will not be raised greatly with the increasing of the number of throttle orifices, but the leakage of seal increases apparently; the uniform pressure groove improves the sealing performance, for example, opening force and stiffness are raised obviously. While leakage is reduced. Finally, the theoretical analysis is verified by experiment. |
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