Leakage Calculation and Mechanism of Mechanical Seal with Micro-pores Considering Cavitation

Ji Hua; XIA Fu; CHEN Xiao; CHEN Zhi

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Leakage Calculation and Mechanism of Mechanical Seal with Micro-pores Considering Cavitation

更新时间：2023-11-14

- Leakage Calculation and Mechanism of Mechanical Seal with Micro-pores Considering Cavitation
- Advanced Engineering Sciences Vol. 48, Issue 3, Pages: 196-201(2016)
- 作者机构：
  
  四川大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016，
  
  Published Online：31 March 2016，
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吉华,夏夫,陈枭,陈志.考虑空化效应的微孔端面机械密封泄漏量计算及机理的研究[J].工程科学与技术,2016,48(3):196-201.

Ji Hua, XIA Fu, CHEN Xiao, et al. Leakage Calculation and Mechanism of Mechanical Seal with Micro-pores Considering Cavitation. [J]. Advanced Engineering Sciences 48(3):196-201(2016)
吉华,夏夫,陈枭,陈志.考虑空化效应的微孔端面机械密封泄漏量计算及机理的研究[J].工程科学与技术,2016,48(3):196-201. DOI：

Ji Hua, XIA Fu, CHEN Xiao, et al. Leakage Calculation and Mechanism of Mechanical Seal with Micro-pores Considering Cavitation. [J]. Advanced Engineering Sciences 48(3):196-201(2016) DOI：

摘要

中文摘要: 微孔端面机械密封泄漏量的数值计算方法和机理都不明确。基于质量守恒的JFO空化边界条件建立了微孔端面机械密封的数值计算模型。数值计算结果表明沿着泄漏方向的不同截面的流量并不相等，所以必须要选择合理的积分截面才能计算出正确的泄漏量。根据径向流量场、周向流量场和压力场的分析，讨论了沿着泄漏方向流量不等的原因，揭示了空化效应和动压效应形成高压区，造成泄漏方向流体沿周向运动，从而降低了泄漏量。最后给出了微孔端面机械密封泄漏量计算的公式和方法。

Abstract

Abstract:The leakage calculation method and leakage mechanism of micro-pores mechanical seal are not clear. Based on the mass-conservative JFO cavitation boundary condition

a numerical calculation model was developed for the mechanical seal with micro-pores. The numerical calculation results showed that the flow rate was not equal at different cross sections along the leakage direction. Therefore

it is necessary to select a reasonable integral cross section to make the leakage calculation correct. Furthermore

the reason why the flow rate along the leakage direction is not equal was discussed through the analysis of the radial flow field

the circumferential flow field and the pressure field. It was also proposed that the leakage was reduced because the high pressure region

which was induced by the dynamic pressure and cavitation

changed the flow from leakage direction to circumferential direction. Finally

the formula and method for the leakage calculation of mechanical seal with micro-pores were presented.

关键词

机械密封微孔端面泄漏量动压润滑空化效应

Keywords

mechanical sealmicro-pores faceleakagedynamic lubricationcavitation

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Related Institution

四川大学化学工程学院四川

School of Chemical Eng., Sichuan Univ.

School of Manufacturing Sci.and Eng., Sichuan Univ.

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Fushun Petrochemical Co.

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