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http://dx.doi.org/10.9725/kstle.2010.26.4.230

Static Characteristic Analysis of Mechanical Face Seal Used for Boiler Feedwater Pump  

Kim, Dong-Wook (School of Mechanical, Aerospace and Systems Engineering, KAIST)
Jin, Sung-Sik (KSM Corporation)
Kim, Jun-Ho (KSM Corporation)
Kim, Kyung-Woong (School of Mechanical, Aerospace and Systems Engineering, KAIST)
Publication Information
Tribology and Lubricants / v.26, no.4, 2010 , pp. 230-239 More about this Journal
Abstract
Mechanical face seal installed in boiler feedwater pump prevents leakage of working fluid using thin fluid film between stator and rotor. If the leakage of working fluid exceeds the allowable volume, serious malfunction of boiler feedwater pump will be happen. The thinner fluid film exists between stator and rotor, the less working fluid leaks out. However, if the thickness of fluid film is not enough, the wear of seal face will be increased. And it causes the decrease in life of mechanical face seal. Therefore appropriate design is necessary to maximize the performance and life of mechanical face seal. In this study, numerical analysis using finite volume method was conducted to investigate the static characteristics of wavy mechanical face seals which have 4 different wavy surface profiles on rotor. As a result, opening force, leakage volume of working fluid and friction torque were obtained. For the same minimum film thickness, the static characteristics of mechanical face seal were affected by the wavy surface profile which can change the thickness of working fluid film and pressure distribution.
Keywords
mechanical face seal; wavy surface profile; static characteristic; opening force; leakage volume of working fluid; friction torque;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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