140MPa压裂泵曲轴疲劳寿命有限元分析  

Fatigue Life Analysis on Crankshaft of 140 MPa Fracturing Pump

作　　者：高媛[1] 单东升[2] 李文亮[1] 王红玲[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]北方重工集团有限公司,沈阳110141

出　　处：《石油矿场机械》2015年第2期68-71,共4页Oil Field Equipment

基　　金：辽宁省科技创新重大专项(201303003)

摘　　要：压裂泵曲轴在压裂工况下受到周期性变化的复杂载荷作用,其疲劳寿命分析为设计主要问题。建立140 MPa五缸压裂泵曲轴精细化模型,根据实际受载工况进行约束及载荷分布的合理等效,应用ANSYS软件对曲轴工作周期内多位置工况进行有限元静力分析,得到相应曲轴应力分析结果。采用专业的疲劳分析软件FE-SAFE,通过合理提取曲轴序列静力分析结果确定载荷谱,进行疲劳寿命、疲劳安全系数计算,实现曲轴疲劳寿命定量分析。为压裂泵优化设计提供理论依据。The fracturing pump crankshaft works under complicated changing loads in fracturing conditions,fatigue life analysis is the main factor for the fracturing pump design.Accurate model of 140 MPa quintuple cylinders fracturing pump crankshaft is built.Constraints and load distribution are reasonable equivalent according to the actual loading conditions.The statics analysis under multi-position conditions during the working period is carried out and the stress distribution is obtained by using the finite element analysis software ANSYS.Reasonably extract a sequence of statics analysis results to define the load spectrum.Fatigue life and fatigue safety factor are calculated by the professional fatigue analysis software FE-SAFE.The fatigue life of crankshaft is quantitatively analyzed,which provides theoretical basis for optimization design of the fracturing pump.

关 键 词：压裂泵 曲轴 疲劳强度 有限元分析 

分 类 号：TE934.202[石油与天然气工程—石油机械设备]