基于雷诺方程及流体数值分析方法的浮动环密封泄漏特性研究
张家远，王利恒，苏鑫
（北京长城计量测试技术研究所，北京 100095）
摘要：由雷诺方程出发，推导了浮环密封的泄漏率公式，并与传统公式进行了比对，比对结果表明在0～5000 r/min转速范围内，推荐公式与传统公式结果一致。采用ANSYS CFX软件建立模型对浮动环密封进行数值分析研究，得到泄漏率结果，并与本文公式及传统公式进行了比对，结果表明最大相对相差为58.69237%，最小相对相差为-11.3867%。本文公式及传统公式均是在一定的简化基础上推导所得，具有一定的误差。数值分析的方法考虑因素更加全面，但计算时间较长，且需要结合试验进行深入研究。
关键词：浮环密封；雷诺方程；流体数值分析方法；泄漏量
中图分类号：TH136 文献标志码：A doi：10.3969/j.issn.1006-0316.2017.09.006
文章编号：1006－0316 (2017) 09－0021－06
Studies on Leakage Characteristics of Floating Ring Seal Based on Reynolds Equations and Fluid Numerical Analysis
ZHANG Jiayuan，WANG Liheng，SU Xin
( Changcheng Institute of Metrology & Measurement, Beijing 100095, China )
Abstract：Leakage flow rate formula of floating ring seal was derived from Reynolds equations in this article. Compared with the traditional Leakage flow rate formula, the resultant leakage flow rate from the two formulas was consistent within the rotational speed of 0 to 5000rpm. The leakage flow rate was also obtained using Fluid numerical analysis of ANSYS CFX software. Then the numerical analysis results were compared with those from the traditional Leakage flow rate formula. The maximum of the relative tolerance of the two types of arithmetic methods about Leakage flow rate is 58.69237% and its minimum is -11.3867%. The reason of the high relative tolerance occurrence is that the traditional Leakage flow rate equation and the one deduced in this article are both derived under some simplified assumptions which may induce relative high bias. The numerical analysis method from ANSYS CFX software is more complicated and considers more influence components. However it needs more calculating time and is inconvenient in practical usage. Also all the leakage flow rate results from the three types of approaches should be verified utilizing the experimental results.
Key words：floating ring seal；Reynolds equation；fluid numerical analysis；leakage flow rate
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收稿日期：2017－02－21
基金项目：中航工业技术创新基金项目——航空发动机新型密封组件研制（2012E30437）
作者简介：张家远（1965－），男，四川大竹县人，硕士，高级工程师，主要研究方向为航空发动机密封技术；王利恒（1972－），男，内蒙古呼和浩特人，博士，高级工程师，主要研究方向为航空发动机密封技术。
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