轴向冲击器设计计算及有限元分析  

Design calculation and finite element analysis of axial impact device

作　　者：李玮[1] 纪照生 陈柳 邱光泽 闫玉良[4] 

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]渤海钻探工程有限公司第四钻井工程分公司工程技术服务中心,河北沧州062550 [3]中国石化集团国际石油勘探开发有限公司,北京100029 [4]大庆钻探工程公司钻井二公司,黑龙江大庆163413

出　　处：《中州煤炭》2016年第6期76-80,共5页Zhongzhou Coal

基　　金：中国博士后科学基金第6次特别资助(2013T60343);东北石油大学研究生创新科研项目(YJSCX2016-015NEPU)

摘　　要：针对深井、超深井岩石硬度大、研磨性高导致的钻速慢、钻井周期长的问题,提出在深井、超深井钻井中采用新型液动旋冲钻井技术。设计了一种基于涡轮组驱动的新型轴向冲击辅助破岩工具,通过阀板和传动短接端面的错开—咬合产生高频冲击。对危险截面进行了强度计算,结构均满足强度要求。利用Solid Works软件的Simulation插件分析了关键部位的应力及应变分布情况,中心轴和阀板—传动短接在受到最大设计载荷时的安全系数分别为1.894和2.370,设计安全可靠。阀板—传动短接的应力分布过于集中,低应力值的分布相对较广,存在一定结构冗余。强度计算及有限元分析为后续的结构优化设计提供了参考依据。Aiming at the problem of slow drilling speed and long drilling cycle for deep and ultra deep mine shafts caused by high hard- ness and high abrasive rock, a new type of hydraulic rotary percussion drilling technology was proposed to be applied in deep mine shaft drilling. A new type of axial impact assisted rock breaking tool, driven by turbine group, was designed. High-frequency axial impact is generated by the stagger-bite of valve plate and drive short＇s end face. Strength was calculated and checked for dangerous cross-sec- tions. All structural strength requirements were met. Stress and strain distribution under different loads were analyzed by the use of Sim- ulation plug-ins of SolidWorks software. Safety coefficients of central axis and stem-driving short under maximum load are 1. 894 and 2. 370 respectively,which proved that the design is safe and reliable. The stem-driving short＇s stress distribution is too concentrated. Lower stress distribution range is relatively wide, and has certain structural redundancy. The strength calculation and finite element anal- ysis can provide a reference for the following optimized design of structure.

关 键 词：轴向冲击器 强度校核 有限元分析 

分 类 号：TD421.25[矿业工程—矿山机电]