中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2012年
6期
642-646
,共5页
机械密封%瞬态振动%非线性振动%响应
機械密封%瞬態振動%非線性振動%響應
궤계밀봉%순태진동%비선성진동%향응
mechanical seal%transient vibration%non-- linear vibration%response
建立了考虑倾斜情况的弹性补偿单元支撑的非接触机械密封瞬态振动响应分析模型,该模型包括了瞬态Reynolds方程、运动方程以及二阶非线性动特性系数求解方程等。采用Euler法求解获得了非接触机械密封在轴向振动位移和静环倾角随时间变化时的瞬态振动响应特性。计算得到瞬态油膜力作用下的密封轴向力和倾覆力矩相关的14个动特性系数。结果表明：密封间隙内流体阻尼对密封副和摆动的影响是线性的;密封副瞬态振动影响油膜厚度分布,从而引起油膜压力分布发生变化,结果导致密封环发生摆动;密封副摆动同样也会引起密封轴向振动。
建立瞭攷慮傾斜情況的彈性補償單元支撐的非接觸機械密封瞬態振動響應分析模型,該模型包括瞭瞬態Reynolds方程、運動方程以及二階非線性動特性繫數求解方程等。採用Euler法求解穫得瞭非接觸機械密封在軸嚮振動位移和靜環傾角隨時間變化時的瞬態振動響應特性。計算得到瞬態油膜力作用下的密封軸嚮力和傾覆力矩相關的14箇動特性繫數。結果錶明：密封間隙內流體阻尼對密封副和襬動的影響是線性的;密封副瞬態振動影響油膜厚度分佈,從而引起油膜壓力分佈髮生變化,結果導緻密封環髮生襬動;密封副襬動同樣也會引起密封軸嚮振動。
건립료고필경사정황적탄성보상단원지탱적비접촉궤계밀봉순태진동향응분석모형,해모형포괄료순태Reynolds방정、운동방정이급이계비선성동특성계수구해방정등。채용Euler법구해획득료비접촉궤계밀봉재축향진동위이화정배경각수시간변화시적순태진동향응특성。계산득도순태유막력작용하적밀봉축향력화경복력구상관적14개동특성계수。결과표명：밀봉간극내류체조니대밀봉부화파동적영향시선성적;밀봉부순태진동영향유막후도분포,종이인기유막압력분포발생변화,결과도치밀봉배발생파동;밀봉부파동동양야회인기밀봉축향진동。
Considering the tilt of a seal ring, the transient vibration response analysis model of a non--contact mechanical seal was presented. The model was consisted of transient Reynolds equation, motion equation and equation for solving the second--order nonlinear dynamic coefficients of the seal. With Euler method, the characteristic parameters of the transient vibration response were obtained, which included the axial vibration displacements and the angle--swing of the static ring. 14 nonlinear forces and 14 nonlinear overturning moment dynamic coefficients for the non--contact mechanical seal were calculated. The results show that the influences of the damping effects of the sealed fluid between the seal gaps on the axial vibration displacements and the angle--swing are linear. The film thickness distribution changes with the axial vibration of seal, which will lead to static ring swing, and the swing can also cause the axial vibration of the seal.
