The sealing pressure variance originated from volume of ferrofluids in magnetic fluid seal

被引：1
|
作者：
Li, Liu [1 ]
Guo, Yunqi [1 ]
Qi, Zhiqiang [2 ]
Li, Decai [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China
[2] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2024年 / 200卷
基金：
中国国家自然科学基金;
关键词：
Ferrofluids; Magnetic fluid seal; Rotary shaft seal;
D O I：
10.1016/j.triboint.2024.110148
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
To find the relationship between the volume of ferrofluids injected into the sealing gap and the sealing pressure of magnetic fluid seal, a magnetic fluid sealing experimental equipment is well designed. The ferrofluids used in magnetic fluid seal experiments are expertly synthesized silicone oil based ferrofluids, which have a saturated magnetization as high as 31.4 kA/m. The finding of experiments and simulation results indicates that the sealing pressure has a positive relationship with the volume of ferrofluids when the volume is smaller than 0.5 mL. Based on those results, a theoretical model is established. The key factor affecting the sealing pressure is the thickness of liquid sealing barrier L, which is related to the volume of ferrofluids.
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页数：8
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