瞬态启停机械密封轴对称动力学模型与密封行为分析

孟祥铠; 彭旭东; 王乐勤

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瞬态启停机械密封轴对称动力学模型与密封行为分析

更新时间：2025-12-10

- 瞬态启停机械密封轴对称动力学模型与密封行为分析
- CIESC Journal Issue 6, Pages: 1620-1625(2011)
- 作者机构：
  
  浙江工业大学过程装备及其再制造教育部工程研究中心
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 June 2011，
  
  Published：05 June 2011
- 稿件说明：
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孟祥铠, 彭旭东, 王乐勤. 瞬态启停机械密封轴对称动力学模型与密封行为分析[J]. CIESC Journal, 2011, (6): 1620-1625.
DOI：

孟祥铠, 彭旭东, 王乐勤. 瞬态启停机械密封轴对称动力学模型与密封行为分析[J]. CIESC Journal, 2011, (6): 1620-1625. DOI：

摘要

启停过程顺利与否直接关系到机械密封的可靠和长寿命运行。考虑密封端面流固力耦合作用、微观空化及端面接触的影响，通过建立机械密封瞬态启停动力学模型，计算瞬态启停过程中密封浮动环的轴向位移、密封端面液膜厚度变化、端面接触力及泄漏率等密封参量，研究了机械密封启停过程中的瞬态密封行为，分析了动环轴向跳动等对机械密封性能的影响。结果表明：受轴向跳动和启停过程速度变化的影响，密封参量呈现瞬态扰动现象，且轴向跳动越大，扰动越大。该模型和计算方法对完善机械密封设计方法、评价机械密封设计合理性具有一定的参考价值。

Abstract

Whether startup and shutdown operation of mechanical seals goes on smoothly directly influences its reliability and life span.A transient dynamic model was developed by taking into consideration the effect of liquidsolid force coupling between end faces

microcavitation and face contact.Seal parameters

such as axial displacement of floating ring

film thickness

contact pressure and leakage rate

etc were computed.Transient seal behavior of mechanical seals during startup and shutdown operation was investigated.The influence of axial runout on seal performance was analyzed.The results showed that due to the effect of axial runout and change of velocity during transient operation

key seal parameters varied correspondingly with axial runout

and large runout led to big disturbance.The model and numerical methods could be used to improve the product design method and to assess design rationality.

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