Performance Comparative Analysis and Structural Optimization of Split Mechanical Seals for Pumps

Junliang Zhang; Guanglei Zeng; Heshun Wang; Weibing Zhu

doi:10.6911/WSRJ.202601_12(1).0003

Authors

Junliang Zhang
Guanglei Zeng
Heshun Wang
Weibing Zhu

DOI:

https://doi.org/10.6911/WSRJ.202601_12(1).0003

Keywords:

Split mechanical seal, Numerical analysis, Sealing performance, Orthogonal test

Abstract

This paper focuses on the sealing performance of split mechanical seals used in pumps, proposing a new split seal structure with the sealing ring and support component installed at a 90° offset, and conducting a comparative performance study against traditional coplanar arrangements. The research establishes a 3D numerical model, combining ANSYS numerical simulation with orthogonal experimental methods to systematically analyze the impact of the gap between the end face and split face on leakage. The results show that the new design exhibits superior sealing performance under various gap conditions. Furthermore, through range and variance analysis, the significant order of the impact of each structural parameter on leakage was determined, optimizing a combination of structural parameters that achieved the best sealing performance, significantly reducing leakage, and providing a theoretical basis and reference for the structural design and performance improvement of split mechanical seals.

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References

[1] Nagai Yataro, Mitsuyoshi Matsushita, Yuji Yamauchi. Mechanical seal including a split ring: US, 5067733A [P]. 1991-11-26.

[2] Radosav J J, Dudik D M, Brauer Q T, et al. Modular Mechanical Seal: China, 1094139A [P]. 1994-10-26.

[3] Bessette R F, Simmons L K, Proulx G S, et al. Fully split car-tridge mechanical seal assembly: US, 05662340A [P].1997-09-02.

[4] Reagan MP. Split face mechanical sealing rings and their use: US, 05615893A [P]. 1997-04-01.

[5] Giard B. Mechanical seal assembly: US, 2007267818 [P]. 2007-11-22.

[6] Boyson S. Reliability performance of split seal technology when combined with a centrifugal flow device [J]. Sealing Technology, 2007 (7) :7-10.

[7] Ma Weidong. Split-type mechanical seal: China, 2378578Y [P]. 2000-05-17.

[8] Li Zhenhuan, Li Yan. Design Characteristics and Applications of Division Seal Structures for Boilers [J]. Fluid Machinery, 2002, (01):42-43.

[9] Shao Jiaxing, Yao Liming, Li Kun, et al. Analysis of Mechanical Seal Structure for Fully Split Kettles [J]. Fluid Machinery, 2003, (08): 36-38.

[10] Zhang Yuan, Yang Qiming. Design of a New Split-Type Mechanical Seal Device for Kettles [J]. Chemical Machinery, 2009, 36(02):96-99.

[11] Chen Bifeng. Finite Element Analysis of Split Mechanical Seal Structure [J]. Machinery, 2010, 37(09): 34-36.

[12] Wang Hongqun, Yu Peiqing. Fully split mechanical seal for kettles: China, 101725712A [P]. 2010-06-09.

[13] Tao Kai, Tu Qiao'an, Sun Jianjun, et al. Deformation Analysis of Split Mechanical Seal Based on ANSYS [J]. Lubrication & Sealing, 2014, 03:84-90.

[14] Feng Feifei, Yang Qiming, Mao Dongbi, et al. Analysis and Study of Split Mechanical Seals [J]. Mining Machinery, 2015, 43(02): 5-8.

[15] Hu Qiong, Sun Jianjun, Tu Qiaoan, et al. Research Status and Key Issues Exploration of Split Mechanical Seal Technology [J]. Progress in Chemical Industry, 2015, 34(05): 1207-1214.

[16] Liang Xiao, Zhu Weibing, Wang Fenglin, et al. Failure Analysis and Improvement of Split Mechanical Seals for Kettles Based on FMEA [J]. Lubrication and Sealing, 2025, 50(02): 170-177.