润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2014年
10期
108-113
,共6页
磁性液体%磁性润滑脂%密封%大间隙
磁性液體%磁性潤滑脂%密封%大間隙
자성액체%자성윤활지%밀봉%대간극
ferrofluid%magnetic grease%sealing%large gap
设计某装备中大功率电机用的牛顿型磁性液体与磁性润滑脂组合旋转密封。理论上推导2种磁性液体组合旋转密封时的耐压公式和摩擦功耗公式，表明耐压能力主要与密封级数、磁场强度、磁性液体饱和磁化强度及磁性润滑脂屈服应力有关，磁性润滑脂的黏性损耗与转速的（2n＋1）（其中n为磁性润滑脂的流动指数）次方成正比。设计适用于大功率电机密封用的大间隙磁性液体及磁性润滑脂组合旋转密封结构，并在密封实验台上进行磁性液体密封耐压实验及磁性润滑脂旋转密封温度测试实验。验证理论分析的正确性及大功率电机磁性液体与磁性润滑脂组合旋转密封方式的可行性。
設計某裝備中大功率電機用的牛頓型磁性液體與磁性潤滑脂組閤鏇轉密封。理論上推導2種磁性液體組閤鏇轉密封時的耐壓公式和摩抆功耗公式，錶明耐壓能力主要與密封級數、磁場彊度、磁性液體飽和磁化彊度及磁性潤滑脂屈服應力有關，磁性潤滑脂的黏性損耗與轉速的（2n＋1）（其中n為磁性潤滑脂的流動指數）次方成正比。設計適用于大功率電機密封用的大間隙磁性液體及磁性潤滑脂組閤鏇轉密封結構，併在密封實驗檯上進行磁性液體密封耐壓實驗及磁性潤滑脂鏇轉密封溫度測試實驗。驗證理論分析的正確性及大功率電機磁性液體與磁性潤滑脂組閤鏇轉密封方式的可行性。
설계모장비중대공솔전궤용적우돈형자성액체여자성윤활지조합선전밀봉。이론상추도2충자성액체조합선전밀봉시적내압공식화마찰공모공식，표명내압능력주요여밀봉급수、자장강도、자성액체포화자화강도급자성윤활지굴복응력유관，자성윤활지적점성손모여전속적（2n＋1）（기중n위자성윤활지적류동지수）차방성정비。설계괄용우대공솔전궤밀봉용적대간극자성액체급자성윤활지조합선전밀봉결구，병재밀봉실험태상진행자성액체밀봉내압실험급자성윤활지선전밀봉온도측시실험。험증이론분석적정학성급대공솔전궤자성액체여자성윤활지조합선전밀봉방식적가행성。
The rotary combination sealing composed of Newtonian magnetic fluid and magnetic grease was designed for a high-power motor of certain equipment.The pressure and friction-power formulae of the rotary combination sealing were deduced theoretically.It is shown that the pressure capacity is mainly related with the sealing stage,magnetic field strength,magnetic fluid saturation magnetization and yield stress of magnetic grease,the viscous dissipation power of mag-netic grease sealing is approximate proportional to the (2n+1)power of rotational speed(n is the flow index of magnetic grease).A large gap rotary sealing structure that is suitable for high-power motor was designed,and the pressure capacity and temperature change experiments were made in the experimental stage.The experiments prove that theoretical analysis is correct and using the combination sealing of magnetic fluid and magnetic grease in the high-power motor is feasible.
