| 自加压式动静压混合式气体润滑密封的性能分析 |
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| 引用本文： | 扈中平,李双喜,蔡纪宁,张秋翔.自加压式动静压混合式气体润滑密封的性能分析[J].润滑与密封,2011,36(4). |
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| 作者姓名： | 扈中平 李双喜 蔡纪宁 张秋翔 |
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| 作者单位： | 北京化工大学机电工程学院,北京,100029 |
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| 摘 要： | 介绍自加压动静压混合润滑气体密封的工作原理,分析其密封特性。采用流体计算软件FLUENT建立不同自加压动静压混合气体润滑密封端面间气膜的数值计算流场,求得气膜的压力和速度分布,得到密封的性能参数,如开启力、刚度、泄漏量。分析该密封在稳定运转状态和启停工作状态的运行特点,与流体动压型气体密封的工作特性进行对比。结果表明:自加压动静压混合密封在运转时具有更大的开启力和泄漏量以及较高的刚度,表现出更好的启停性能;静压引入孔的位置以及均压槽结构对密封开启力及泄漏量有较大影响,静压引入孔在坝区使气膜刚度增大,在动压槽区则使气膜刚度减小。
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| 关 键 词： | 动静压混合润滑 干气密封 启停特性 |
Study on Self-pressurized Hydrostatic-dynamic Hybrid Lubrication Gas Seal |
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| Hu Zhongping,Li Shuangxi,Cai Jining,Zhang Qiuxiang.Study on Self-pressurized Hydrostatic-dynamic Hybrid Lubrication Gas Seal[J].Lubrication Engineering,2011,36(4). |
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| Authors: | Hu Zhongping Li Shuangxi Cai Jining Zhang Qiuxiang |
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| Affiliation: | Hu Zhongping Li Shuangxi Cai Jining Zhang Qiuxiang(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | The operating principle of the self-pressurized hydrostatic-dynamic hybrid lubrication gas seal(SHDHLGS)was introduced and its seal characteristic was analyzed.Different numerical calculated flow field of the gas film between the seal faces of self-pressurized hydrostatic-dynamic hybrid lubrication gas seal and dynamic pressure gas seal was established by software FLUENT.The distributions of pressure and velocity and the performance parameters of the seal such as the opening force,stiffness,and leakage dist... |
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| Keywords: | hydrodynamic-hydrostatic hybrid lubrication dry gas seal start-stop feature |
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