润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2015年
5期
89-93
,共5页
C形橡胶圈%接触压力%密封性能%快开盲板
C形橡膠圈%接觸壓力%密封性能%快開盲闆
C형상효권%접촉압력%밀봉성능%쾌개맹판
rubber C-ring%contact pressure%sealing performance%quick opening blind plate
针对国内高压大型天然气过滤器快开盲板用C形橡胶密封圈，利用ABAQUS建立其有限元模型，分析密封槽宽度、内压、初始密封间隙、材料硬度、槽口倒角半径、钢圈直径对其性能的影响，得到这些参数的合理取值范围。结果表明：材料硬度对密封圈密封性能的影响较小，密封槽宽度对密封可靠度有一定影响，随密封槽宽度增加，最大接触压力呈下降趋势，密封可靠度有所降低；随着内压的增加，最大接触压力与内压的差值呈增大趋势，密封可靠性增加；随初始密封间隙增加，应力增加，密封可靠度有所降低；密封槽口倒角半径对密封圈剪切破坏的影响较大，倒角半径增大密封圈发生局部剪切破坏的可能性增大；钢圈直径对C形橡胶圈应力应变影响较大，钢圈直径增大，剪切应力呈减小趋势。
針對國內高壓大型天然氣過濾器快開盲闆用C形橡膠密封圈，利用ABAQUS建立其有限元模型，分析密封槽寬度、內壓、初始密封間隙、材料硬度、槽口倒角半徑、鋼圈直徑對其性能的影響，得到這些參數的閤理取值範圍。結果錶明：材料硬度對密封圈密封性能的影響較小，密封槽寬度對密封可靠度有一定影響，隨密封槽寬度增加，最大接觸壓力呈下降趨勢，密封可靠度有所降低；隨著內壓的增加，最大接觸壓力與內壓的差值呈增大趨勢，密封可靠性增加；隨初始密封間隙增加，應力增加，密封可靠度有所降低；密封槽口倒角半徑對密封圈剪切破壞的影響較大，倒角半徑增大密封圈髮生跼部剪切破壞的可能性增大；鋼圈直徑對C形橡膠圈應力應變影響較大，鋼圈直徑增大，剪切應力呈減小趨勢。
침대국내고압대형천연기과려기쾌개맹판용C형상효밀봉권，이용ABAQUS건립기유한원모형，분석밀봉조관도、내압、초시밀봉간극、재료경도、조구도각반경、강권직경대기성능적영향，득도저사삼수적합리취치범위。결과표명：재료경도대밀봉권밀봉성능적영향교소，밀봉조관도대밀봉가고도유일정영향，수밀봉조관도증가，최대접촉압력정하강추세，밀봉가고도유소강저；수착내압적증가，최대접촉압력여내압적차치정증대추세，밀봉가고성증가；수초시밀봉간극증가，응력증가，밀봉가고도유소강저；밀봉조구도각반경대밀봉권전절파배적영향교대，도각반경증대밀봉권발생국부전절파배적가능성증대；강권직경대C형상효권응력응변영향교대，강권직경증대，전절응력정감소추세。
The finite element model of rubber C?ring used in the quick?opening blind plate of domestic high?pressure natural gas filter was established.The influences of the seal groove width,internal pressure,initial seal clearance,hardness of materials,notch radius,rim diameter of steel?ring on the sealing performance of rubber C?ring were analyzed by using ABAQUS software,and the reasonable range of these parameters were suggested.The results show that the hardness of mate?rials has little effect on seal performance,while the seal groove width has a certain impact on the sealing reliability,with the sealing groove width increasing,the maximum contact pressure is decreased and the sealing reliability is also decreased. With the increase of internal pressure,the difference between the maximum contact pressure and internal pressure is in?creased,the sealing reliability is increased.With the increase of initial gap seal,the stress is increased and the sealing reli?ability is decreased.The sealing notch chamfer radius has large influence on the shear failure of sealing ring,the increasing of chamfer radius will result in large possibility of shear failure.Steel?ring diameter has large effect on the strain and stress of C?shaped rubber ring,and he increasing of steel?ring diameter will result in the decrease of shear stress.
