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A New Design of Magnetic Fluid Seal for Liquids 被引量:1

A New Design of Magnetic Fluid Seal for Liquids
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摘要 Direct contract between the sealed liquid and the magnetic fluid in a dynamic system under magnetic field may lead to an unstable interface, consequently, break down the seal. Aiming at this problem, a new magnetic fluid seal (MFS) was developed. In this new MFS, a soft iron bushing with high permeability was introduced on the shaft and nonferrous shields were installed beside the bushing and the pole pieces. The parameters of the bushing and the shields were optimized in a seal simulation facility The results show that the bushing with a thickness of 7 mm and shields with a width of 8 mm are best for sealing a shaft 20 mm in diameter. The MFS designed based on the optimum parameters shows good performance and long life span for sealing lubricating oil. Direct contract between the sealed liquid and the magnetic fluid in a dynamic system under magnetic field may lead to an unstable interface, consequently, break down the seal. Aiming at this problem, a new magnetic fluid seal (MFS) was developed. In this new MFS, a soft iron bushing with high permeability was introduced on the shaft and nonferrous shields were installed beside the bushing and the pole pieces. The parameters of the bushing and the shields were optimized in a seal simulation facility. The results show that the bushing with a thickness of 7 mm and shields with a width of 8 mm are best for sealing a shaft 20 mm in diameter. The MFS designed based on the optimum parameters shows good performance and long life span for sealing lubricating oil.
出处 《Journal of China University of Mining and Technology》 2005年第4期366-369,共4页 中国矿业大学学报(英文版)
基金 Project 2002AA302608 supported by Hi-Tech R & D Program of China (863 Program) and scientific research foundation of China University of Mining& Technology
关键词 magnetic fluid DESIGN sealing liquid parameter optimization 磁性流体 参数优化 液体 机械摩擦 机械润滑
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