全金属单螺杆油泵的结构参数分析及优化  

Analysis and Optimization of Structural Parameters of Metallic Progressing Cavity Oil Pump

作　　者：钟功祥[1] 雷鹏燕 祝令闯 Zhong Gongxiang;Lei Pengyan;Zhu Lingchuang(MOE Key Laboratory of Oil&Gas Equipment,South West Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学石油天然气装备教育部重点实验室,成都610500

出　　处：《流体机械》2020年第5期18-25,43,共9页Fluid Machinery

基　　金：省部共建“石油天然气装备”教育部重点实验室(西南石油大学)资助项目(2017sts03)。

摘　　要：我国的稠油资源丰富,如何有效地开采稠油资源逐步成为人们的探究重点.目前,由于对热采环境优异的适应性,全金属螺杆泵在稠油开采中得到广泛应用.针对现阶段全金属单螺杆泵普遍效率低的问题,提出了基于CFD的优化策略.运用三维动网格技术对螺杆泵内部流场进行有限元建模;利用试验数据验证了该模型的正确性;基于该模型针对泵的间隙值,偏心距以及定子导程3个主要结构参数对油泵性能的影响规律进行分析并得到了这些参数对排量、漏失量、容积效率、泵效的相关影响规律;利用这些规律对该螺杆泵结构进行优化,使全金属单螺杆泵的系统效率约提升约30%.China is rich in heavy oil resources.How to effectively exploit these heavy oil resources has gradually become the focus of exploration.At present,metallic progressing cavity oil pump has been widely used in heavy oil production due to its excellent adaptability to high temperature environment.For the problem of generally low efficiency of metallic progressing cavity oil pump at present,the optimization strategy based on CFD was put forward.The finite element model of internal flow field of metallic progressing cavity oil pump was established using three-dimensional dynamic mesh technology.The correctness of the model was verified by experimental data.Based on the model,the influence of such three main structural parameters as clearance,eccentricity and stator lead on the performance of the pump was analyzed,and the relevant influence laws of these parameters on displacement,leakage,volume efficiency and pump efficiency were obtained.By using these influence laws,the structure of the metallic progressing cavity oil pump was optimized,making the system efficiency of metallic progressing cavity oil pump improved by about 30%.

关 键 词：全金属单螺杆泵 CG宏 动网格 优化 

分 类 号：TH3[机械工程—机械制造及自动化] TE933[石油与天然气工程—石油机械设备]