流体机械2025，Vol.53Issue(6)：58-66,9.DOI:10.3969/j.issn.1005-0329.2025.06.008
基于瞬态流场分析的小排量潜油螺杆泵的结构优化设计
Structural optimization design of small-displacement submersible progressive cavity pumps based on transient flow field analysis
摘要
Abstract
To address the low volumetric efficiency caused by significant leakage in small-displacement submersible progressive cavity pumps,this study takes the GLB-20 pump as the research object.Using Ansys Fluent software,a fluid simulation model was constructed based on user-defined functions(UDF)and dynamic mesh technology to simulate transient and steady-state flow fields.The influence laws of structural parameters including eccentricity,stator lead,and clearance on flow velocity and leakage were investigated.Experimental validation of optimization results yielded the optimal design scheme.Results show the pump exhibits significant harmonic variation during operation,with flow pulsating twice per cycle matching the stator-rotor lead ratio.Transient flow fields conform better to actual conditions than steady-state fields.Clearance is the most critical factor affecting leakage and flow velocity:stator lead influences flow velocity more than eccentricity,while eccentricity affects leakage more than stator lead.Optimized parameters via Box-Behnken design(BBD)method are eccentricity 1.8 mm,stator lead 78 mm,clearance 0.3 mm.Leakage decreased by 12.7%,volumetric efficiency significantly improved,and flow stability enhanced.This research provides design basis for small-displacement submersible progressive cavity pumps.关键词
小排量潜油螺杆泵/瞬态流场/用户自定义函数(UDF)/BBD响应面法/结构优化设计Key words
small-displacement submersible progressive cavity pump/transient flow field/user-defined functions(UDF)/BBD response surface methodology/structural optimization design分类
机械制造引用本文复制引用
祖海英,付灵芝,叶卫东,刘永鹏,张维良..基于瞬态流场分析的小排量潜油螺杆泵的结构优化设计[J].流体机械,2025,53(6):58-66,9.基金项目
国家自然科学基金项目(52374383) （52374383）
