涡轮钻具叶片电解加工阴极工具设计  

Design of Cathode Tool for Electrochemical Machining of Turbodrill Blade

作　　者：李晓龙[1] 刘书海[1] 关皓纶 Li Xiaolong;Liu Shuhai;Guan Haolun(College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing))

机构地区：[1]中国石油大学(北京)机械与储运工程学院

出　　处：《石油机械》2020年第4期16-22,共7页China Petroleum Machinery

基　　金：国家自然科学基金项目“页岩水力压裂过程水基润滑摩擦行为及作用机制研究”(51575529)。

摘　　要：由于涡轮钻具叶片型线的设计愈加复杂,叶片的传统加工方法面临越来越多的加工难题。因此拟将电解加工技术应用于涡轮钻具叶片的制造领域,对涡轮钻具叶片电解加工阴极工具的设计进行了研究。以127 mm涡轮钻具叶片的设计为例:首先基于多项式曲线拟合的方法,在MATLAB中编程计算绘制出最初的叶片曲线;然后将得到的曲线导入AutoCAD,根据理论计算得到的叶片几何参数修补得到叶片型线的几何图纸;最后将叶片型线导入GAMBIT有限元前处理软件进行网格划分,并在ANSYS Fluent软件中进行流场仿真分析,同时在Tecplot360软件中进行后处理得到流场中流体的流向图、速度云图及压力云图。结果表明利用这种方法设计的叶片可以满足实际工作状况的要求。研究内容和结果为涡轮钻具叶片的电解加工研究奠定了良好基础。Due to the more complicated design of the blade profile of turbodrills,the traditional processing methods of blades are facing more and more difficulties.Therefore,the electrochemical machining technology is applied to the field of turbodrill blade manufacturing,and researches on the design of the cathode tool for the electrochemical machining of turbodrill blade are conducted.Take the design of the 127 mm turbodrill blade for case study:First,based on the method of polynomial curve fitting,the initial blade curve is drawn by using MATLAB;then the obtained curve is imported into AutoCAD,and the geometric parameter of the blade obtained by theoretical calculation is repaired to attain the blade profile;finally the blade profile is imported into GAMBIT finite element pre-processing software for meshing,and flow field simulation analysis is conducted using ANSYS Fluent software.Post-processing in Tecplot360 software is conducted to obtain the flow field flow chart,velocity and pressure distribution.The results show that the blades designed by this method can meet the requirements of actual working conditions,and provide a good foundation for the research of the electrochemical machining of turbodrill blades.

关 键 词：电解加工 涡轮钻具叶片 阴极工具设计 流场仿真分析 

分 类 号：TE921[石油与天然气工程—石油机械设备]