CDJY2500型五缸压裂泵泵头体力学特性分析  

Mechanical Analysis of the Pump Head of the CDJY2500 Five-Cylinder Fracturing Pump

作　　者：姚治明 易先中[1] 周元华[1] 易军 殷光品 陈辉[3] 宋顺平 Yao Zhiming;Yi Xianzhong;Zhou Yuanhua;Yi Jun;Yin Guangpin;Chen Hui;Song Shunping(School of Mechanical Engineering,Yangtze University;Hubei Jiaye Petroleum Machinery Co.,Ltd.;Gudao Oil Production Plant of Sinopec Shengli Oilfield Company;Changqing Drilling Company,CNPC Chuanqing Drilling Engineering Company Limited)

机构地区：[1]长江大学机械工程学院,湖北省荆州市434023 [2]湖北佳业石油机械股份有限公司 [3]中国石化胜利油田分公司孤岛采油厂 [4]中国石油集团川庆钻探工程有限公司长庆钻井总公司

出　　处：《石油机械》2019年第10期81-87,共7页China Petroleum Machinery

基　　金：国家科技重大专项“钻井协同自动控制系统研发”(2016ZX05022006-004)、“复杂结构井、丛式井设计与控制新技术”(2017ZX05009-003);国家高技术船舶科研计划项目“海洋大功率往复式压缩机研制”(工信部联装[2014] 506号);湖北省技术创新专项“深部地热资源综合开发利用关键技术”(2016ACA181);NSFC-石油化工联合基金项目“页岩和致密油气田高效开发建井基础研究”(U1762214、U1262108、51974035)

摘　　要：在压裂泵泵头体受力特性研究中,针对不同柱塞尺寸的泵头体在不同工况下的应力变化趋势研究还比较少。鉴于此,运用ANSYS Workbench软件,对4种不同结构的CDJY2500型五缸压裂泵泵头体,在多组内压载荷作用下的力学特性进行了数值分析。分析结果表明:泵头体排出工况的最大应力和应变总是大于吸入工况,在额定最大压力载荷140 MPa条件下,泵头体的最大应力为788.76 MPa,小于其材料的屈服强度,其力学行为处于材料弹性变形阶段;在不同泵冲次作用下,相对于柱塞直径为95.3 mm泵头体,其他3种结构的泵头体在最大应力上减小的平均值分别为15.6%、42.4%和52.1%,最大总变形量减小的平均值分别为12.9%、34.7%和62.7%;当泵冲次为115~200 min^-1时,泵头体最大应力与最大总变形量随泵冲次的增加而快速减小,当泵冲次在200~330 min^-1时,泵头体最大应力与最大总变形量随着泵冲次的增加而缓慢减小。研究结果可为泵头体的结构优化与改进提供基础数据。In the mechanical property study of the pump head of fracturing pump,there are few researches on the stress change of pump heads with different plunger sizes under different working conditions.In view of this,using ANSYS Workbench software,the mechanical properties of four different types of pump heads of the CDJY2500 five-cylinder fracturing pump under various internal pressure loads are numerically analyzed.The analysis results show that the maximum stress and strain of the pump head under discharge condition are always greater than that under the suction condition.Under the rated maximum pressure load of 140 MPa,the maximum stress of the pump head body is 788.76 MPa,which is less than the yield strength of the material.Under different pump strokes,with respect to the 95.3 mm plunger,the average maximum stress value of the pump heads is reduced by 15.6%,42.4%,and 52.1%,respectively.The average values of the maximum total deformation are reduced by 12.9%,34.7%,and 62.7%,respectively.Under the pump strokes of 115~200 min^-1,the maximum stress and maximum total deformation of the pump head decrease rapidly with the pump stroke.Under the pump stroke of 200~330 min^-1,the maximum stress and maximum total deformation of the pump head slowly decrease with the pump stroke.The research results could provide basic data for structural optimization and improvement of the pump head.

关 键 词：泵头体 压裂泵 力学特性 有限元分析 

分 类 号：TE934[石油与天然气工程—石油机械设备]