基金项目:西安石油大学研究生创新与实践能力培养项目(编号:YCS22121018)收稿日期:2022-11-13基于响应曲面法的井下节流器密封结构分析及优化*席文奎,王科强,贾超(西安石油大学机械工程学院,西安710065)摘要:针对苏里格气田井下节流器密封失效问题,利用有限元软件,对井下节流器密封结构的密封性能进行了分析,发现密封结构中V型密封圈具有继续优化的潜力,采用响应曲面法对V型密封圈进行了优化。仿真结果表明,当V型密封圈的密封角度θ=69.7°、密封宽度h=5.3mm、密封圆角r=0.3mm、密封间隙d=0mm、摩擦因数μ=0.7时,V型密封圈的最大接触应力为2.56MPa,在保证安全的前提下接触应力提高了71%。此时节流器密封结构的密封效果最好。关键词:井下节流器;结构优化;有限元分析;响应曲面法中图分类号:TE931文献标志码:A文章编号:1009-9492(2023)03-0117-04AnalysisandOptimizationofSealingStructureofDownholeChokeBasedonResponseSurfaceMethodologyXiWenkui,WangKeqiang,JiaChao(SchoolofMechanicalEngineering,Xi′anPetroleumUniversity,Xi′an710065,China)Abstract:InviewofthesealingfailureofdownholechokeinSuligeGasField,thesealingperformanceofdownholechokesealingstructureisanalyzedbyusingfiniteelementsoftware.Itisfoundthatthemetalcomponentsofthesealingstructureneednotbeconsideredinthesubsequentoptimization,andtheV-shapedsealringhasthepotentialforfurtheroptimization;TheresponsesurfacemethodwasusedtooptimizetheV-shapedsealring.ThesimulationresultsshowthatwhenthesealingangleofV-shapedsealringisθ=69.7°,sealwidthh=5.3mm,sealfilletr=0.3mm,sealclearanced=0mm,frictioncoefficientμ=0.7,themaximumcontactstressofV-shapedsealringis2.56MPa,whichisincreasedby71%onthepremiseofensuringsafety.Atthistime,thesealingeffectofthethrottlesealingstructureisthebest.Keywords:downholethrottle;structuraloptimization;finiteelementanalysis;responsesurfacemethod.2023年03月第52卷第03期Mar.2023Vol.52No.03机电工程技术MECHANICAL&ELECTRICALENGINEERINGTECHNOLOGYDOI:10.3969/j.issn.1009-9492.2023.03.023席文奎,王科强,贾超.基于响应曲面法的井下节流器密封结构分析及优化[J].机电工程技术,2023,52(03):117-120.0引言天然气井在高压、低温、含水的情况下非常...