Page 128 - 《摩擦学学报》2020年第4期

第 40 卷 第 4 期 摩 擦 学 学 报 Vol 40 No 4
2020 年 7 月 Tribology Jul, 2020

DOI: 10.16078/j.tribology.2019192

机械密封动环外周表面织构换热机理及

结构优化

1
1,2
1,2*
1,2
周宇坤 , 彭旭东 , 赵文静 , 江锦波 , 孟祥铠 1,2
(1. 浙江工业大学 机械工程学院，浙江 杭州 310014;
2. 浙江工业大学 过程装备及其再制造教育部工程研究中心，浙江 杭州 310014)
摘 要: 本文中以接触式机械密封为研究对象，考虑端面摩擦热，建立了包含密封环及密封腔的三维轴对称传热模
型，并采用Fluent软件进行了传热分析，得到了密封环及密封腔的流场、温度场、速度场和Nusselt Number(Nu数)分
布情况. 通过分析织构及其周边的流场、流态和温度场，揭示了织构的对流换热机理，主要研究了等边三角形织构
的深径比、排数、排间距、排列方式和方向角等几何因素对端面温度的影响，并对等边三角形的结构参数进行了优
选. 结果表明：动环外周表面织构具有增强对流换热效果和降低密封环整体温度的能力；织构的型式、深径比、个数
以及排列方式均会对其换热效果产生影响，其中织构个数和旋转角影响较大，且三角形织构具有较强的换热能力，
为今后高性能机械密封的优化设计及应用提供了理论依据.
关键词: 接触式机械密封; 圆周面织构; 对流换热; 结构优化; 端面温度
中图分类号: TH117.3 文献标志码: A 文章编号: 1004-0595(2020)04–0538–13

Heat Transfer Mechanism and Optimization of Circumferential

Texture of Mechanical Seal

1 1,2* 1,2 1,2 1,2
ZHOU Yukun , PENG Xudong , ZHAO Wenjing , JIANG Jinbo , MENG Xiangkai

(1. College of Mechanical Engineering, Zhejiang University of Technology, Zhejiang Hangzhou 310014, China
2. The MOE Engineering Research Center of Process Equipment and Its Remanufacture, Zhejiang University of
Technology, Zhejiang Hangzhou 310014, China)
Abstract: In this paper, the contact mechanical seal was taken as the research object. Considering the friction heat of the
end face, a three-dimensional axisymmetric heat transfer model including the sealing ring and the seal chamber was
established. The heat transfer analysis was carried out by Fluent software. The flow field, temperature field, velocity
field and Nusselt Number (Nu) distribution of the sealing ring and the seal chamber were obtained. By analyzing the
flow field, flow pattern and temperature field of the texture and its surroundings, the convective heat transfer mechanism
of the texture was revealed. The influence of geometric factors such as depth-to-diameter ratio, row number, row
spacing, arrangement and direction angle of the equilateral triangle texture on the temperature of the end face were
studied, and the structural parameters of the equilateral triangle were optimized. The results showed that the texture of
outer circumferential surface of the rotating ring enhanced the convective heat transfer and reduce the overall
temperature of the sealing ring. The type, depth-to-diameter ratio, number and arrangement of the texture affected the

Received 21 October 2019, revised 19 December 2019, accepted 18 February 2020, available online 28 July 2020.
*Corresponding author. E–mail: xdpeng@126.com, Tel: +86-13805766526.
The project was supported by the National Natural Science Foundation of China (U1737202, 51605436) and National Key Research
and Development Program (2018YFB2000800).
国家基金-航天先进制造技术研究联合基金重点项目(U1737202)，国家基金青年项目(51605436)和国家重点研发计划
(2018YFB2000800)资助.