润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2015年
1期
58-62
,共5页
韩彬%鲁金忠%李传君%王志强%刘传刚%黄婉婉
韓彬%魯金忠%李傳君%王誌彊%劉傳剛%黃婉婉
한빈%로금충%리전군%왕지강%류전강%황완완
O 形密封圈%接触应力%剪切应力%热应力耦合分析
O 形密封圈%接觸應力%剪切應力%熱應力耦閤分析
O 형밀봉권%접촉응력%전절응력%열응력우합분석
O-ring%contact stress%shear stress%thermal stress coupling analysis
研究原油高温热采工具 O 形橡胶密封圈在高温高压下的密封特性。借助于大型有限元分析软件 ANSYS，建立 O 形橡胶密封圈及其边界的二维轴对称有限元模型，研究油压、装配间隙和摩擦因数对密封面最大接触应力、剪切应力和 Von Mises 应力的影响，并采用热应力耦合分析方法，分析温度对 O 形密封圈密封性能的影响。结果表明：摩擦因数对应力影响不大，而油压和装配间隙对应力影响很大，过大的装配间隙会造成 O 形橡胶密封圈最大接触应力下降和最大剪切应力上升，造成密封失效；当温度升高时，密封圈最大剪切应力和接触应力相应减小，而最大 Von Mises 应力明显减小，因此应使 O 形密封圈在适当的温度下工作，以确保密封的可靠性。
研究原油高溫熱採工具 O 形橡膠密封圈在高溫高壓下的密封特性。藉助于大型有限元分析軟件 ANSYS，建立 O 形橡膠密封圈及其邊界的二維軸對稱有限元模型，研究油壓、裝配間隙和摩抆因數對密封麵最大接觸應力、剪切應力和 Von Mises 應力的影響，併採用熱應力耦閤分析方法，分析溫度對 O 形密封圈密封性能的影響。結果錶明：摩抆因數對應力影響不大，而油壓和裝配間隙對應力影響很大，過大的裝配間隙會造成 O 形橡膠密封圈最大接觸應力下降和最大剪切應力上升，造成密封失效；噹溫度升高時，密封圈最大剪切應力和接觸應力相應減小，而最大 Von Mises 應力明顯減小，因此應使 O 形密封圈在適噹的溫度下工作，以確保密封的可靠性。
연구원유고온열채공구 O 형상효밀봉권재고온고압하적밀봉특성。차조우대형유한원분석연건 ANSYS，건립 O 형상효밀봉권급기변계적이유축대칭유한원모형，연구유압、장배간극화마찰인수대밀봉면최대접촉응력、전절응력화 Von Mises 응력적영향，병채용열응력우합분석방법，분석온도대 O 형밀봉권밀봉성능적영향。결과표명：마찰인수대응력영향불대，이유압화장배간극대응력영향흔대，과대적장배간극회조성 O 형상효밀봉권최대접촉응력하강화최대전절응력상승，조성밀봉실효；당온도승고시，밀봉권최대전절응력화접촉응력상응감소，이최대 Von Mises 응력명현감소，인차응사 O 형밀봉권재괄당적온도하공작，이학보밀봉적가고성。
The sealing performance of rubber O-ring used for high-temperature thermal mining tool was studied at high temperature and high pressure.With the help of large-scare finite element analysis software ANSYS,the two-dimensional axisymmetric finite element models of rubber O-ring and its boundary were built.Some factors influencing maximal contact stress,shear stress and Von Mises stress of sealing face were analyzed,such as oil pressure,assembly gap and friction coef-ficient.The influence of temperature on the stress of O-ring was investigated by using thermal stress coupling analysis method.Results show that oil pressure and assembly gap have great effect on the stresses,however,friction coefficient has little effect on the stresses.With the increasing of temperature,the maximum shear stress and contact stress are decreased, and maximum Von Mises stress is decreased obviously.The appropriate working temperature should be guaranteed to pro-mote the sealing reliability of high-temperature thermal mining tool.
