Abstract
For better film characteristics of the main pump seal (MPS), a theoretical calculation model was proposed based on the Reynolds equation. A case study with defined MPS was carried out, film stiffness was taken as the basic constraint condition, and the cone angle and clearance are two optimization targets. When the film stiffness reaches a maximum, the corresponding cone angle and clearance is the optimal value. The results show that: (1) film stiffness increased and decreased with clearance and cone angle, respectively; (2) the optional clearance was determined to be within a range of 2~8 µm at a cone angle of between 0.1~1.2′; (3) the maximum of film stiffness is inversely proportional to the cone angle (Clearance) approximately under the clearance (Cone angle) is fixed; (4) leakage is directly proportional to the clearance to power three, and the clearance has greater influence on the amount of leakage than the cone angle. These results provide a reliable theoretical justification for MPS-based designs including optimization method. It therefore forms a fundamental base for research and practical application.
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Wang Heshun is a professor at Xihua University, Chengdu, China. He received his Ph.D. in Mechanical Design&Theory from Southwest Jiaotong University, Chengdu, China. He is a director of the institute of engineering graphics organization. His main research interests include mechanical seals design, seal flow numerical simulations and engineering drawing.
Zhu Weibing is a professor at Xihua University, Chengdu, China. He received his Ph.D. in Mechanical Design&Theory from Southwest Petroleum University, Chengdu, China. He is the director of the institute of mechanical transmission. His main research interests include oil well vibrating screen, transmission seals design, and numerical simulations.
Huang Zepei is a professor senior engineer at Sichuan Nikki Seal Co. Ltd., Chengdu, China. He is a visiting scholar in metallurgy material school of Birmingham University, Birmingham, United Kingdom. His main research interests include mechanical seals design and process, materials of seal and pump technology.
Zhang Chening is a professor senior engineer at Sichuan Nikki Seal Co. Ltd., Chengdu, China. He is the director of technical department. He received his B.S. in Chemical Mechanicals from Sichuan University, Chengdu, China. His main research interests include dry gas seals design, control system of seal and materials of seals.
Zhang Junkai is a professor senior engineer at Sichuan Nikki Seal Co. Ltd., Chengdu, China. He is the director of unclear power seal department. He received his B.S. in Agricultural Mechanical from Southwest University, Chongqing, China. His main research interests include nuclear power seals design, oil seals and floating ring seals.
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Wang, H., Zhu, W., Huang, Z. et al. Research on the cone angle and clearance of main pump seal. J Mech Sci Technol 29, 2939–2947 (2015). https://doi.org/10.1007/s12206-015-0239-2
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DOI: https://doi.org/10.1007/s12206-015-0239-2