负压钻井振动筛的动力特性分析  

Dynamic Characteristics Analysis of Negative-Pressure Shale Shaker

作　　者：周思柱[1] 李旭东[1] 吕志鹏[1] 崔灏[1] ZHOU Si-zhu;LI Xu-dong;LV Zhi-peng;CUI Hao(Institute of Strength and Vibration of Mechanical Structure,Yangtze University,Hubei Jingzhou 434023,China)

机构地区：[1]长江大学机械结构强度与振动研究所,湖北荆州434023

出　　处：《机械设计与制造》2018年第10期43-46,共4页Machinery Design & Manufacture

基　　金：国家重大专项(2011ZX05048)

摘　　要：在传统钻井振动筛的筛面下引入负压腔,设计了一种新型钻井振动筛。通过压差作用提高钻井振动筛的工作性能和钻井液的处理量。文中建立了筛箱振动模型,推导了加载负压后筛箱的运动轨迹。建立了在负压、非淹没条件下岩屑颗粒的受力模型,得到了负压钻井振动筛筛网上岩屑颗粒的抛掷运动规律。通过研究负压下不同大小岩屑颗粒抛掷运动的起跳情况,对负压参数进行优化。当负压压差为126Pa时,负压钻井振动筛具有较好的抛掷效率和工作性能。A new shale shaker is designed by introducing a negative-pressure cavity under the traditional shale shaker’s screen surface.Both the working performance and the drilling fluid handling capacity of the shale shaker are improved due to the pressure difference function.This paper establishes the vibration model of the screen box and deduces its trajectory after loading negative-pressure.The debris particles’force model under the negative-pressure and non-submerged condition is established,in addition,the throwing law of debris particles on the screen surface is obtained.The negative pressure parameters are optimized by studying the taking-off situation of debris particles with different sizes.The shale shaker possesses a relative better throwing efficiency and working performance when the pressure difference is 126Pa.

关 键 词：负压 钻井振动筛 动力学 抛掷运动 优化设计 

分 类 号：TH16[机械工程—机械制造及自动化]