To study high temperature sealing performance of metal Oring for offshore heavy oil thermal recovery tools, the axisymmetric finite element analysis model of metal O-ring was established to calculate contact pressure and shearing stress in high temperature.The influence factors of metal Oring high temperature seal were studied and the theoretical results were tested by experiments.The results show temperature variation has an obvious impact on the strength and seal performance of meal O-ring.The maximal contact pressure and shearing stress of metal O-ring are increased nonlinearly with working pressure rising, which results in higher seal performance and lower strength of O-ring.The metal O-ring has optimal seal performance in high temperature for 12%-16% initial compression ratio and meets sealing requirement for 350℃ heavy oil thermal recovery tools.The theoretical results have been verified by experiments.
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鞠少栋,马认琦,郭树彬,刘传刚,洪秀玫.金属O型圈高温密封性能研究[J].润滑与密封,2015,40(12):111-115. . Research on Sealing Performance of Metal O-ring in High Temperature[J]. Lubrication Engineering,2015,40(12):111-115.