矿用钢丝绳双源磁回路结构设计与仿真分析  

Design and simulation analysis of a dual-source magnetic loop structure for mining steel wire rope

作　　者：周坪 王士豪 周公博[1,2,3] 赵天驰 李煊瀚 闫晓东 ZHOU Ping;WANG Shihao;ZHOU Gongbo;ZHAO Tianchi;LI Xuanhan;YAN Xiaodong(School of Mechanical and Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,China;State Key Laboratory of High and Mining Equipment(Cultivation and Construction Site),China University of Mining and Technology,Xuzhou 221116,China;State Key Laboratory of Intelligent Mining Equipment Technology,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学机电工程学院,江苏徐州221116 [2]中国矿业大学高端矿山装备国家级重点实验室(培育建设点),江苏徐州221116 [3]中国矿业大学智能采矿装备技术全国重点实验室,江苏徐州221116

出　　处：《工矿自动化》2024年第10期135-146,共12页Journal Of Mine Automation

基　　金：中央高校基本科研业务费专项资金项目(2022QN1044,2021YCPY0203);江苏高校优势学科建设工程项目(苏政办发[2018]87号)。

摘　　要：目前矿用钢丝绳损伤电磁检测方法存在主磁通检测对于局部类损伤检测精度较低,基于漏磁的局部损伤检测的定量精度不高等问题。提出了一种同时检测主磁通和漏磁的矿用钢丝绳双源磁检测方法,结合主磁通与漏磁在局部损伤检测方面的互补性,设计了双源磁检测环形筒状励磁回路和独立分离励磁回路方案。基于有限元仿真验证了2种方案的可行性,确定了以独立分离回路作为磁回路的基本结构。研究了衔铁参数、磁铁参数对磁化效果的影响和磁桥路结构参数对磁场分布的影响。结果表明:(1)磁化幅值与回路数量呈正相关,与衔铁长度呈负相关,高度对磁化效果几乎没有影响。(2)磁化幅值与永磁铁材料牌号、长度和厚度呈正相关,与提离值呈负相关。(3)磁化幅值与磁桥路厚度呈正相关,与空气间隙呈负相关,而提离值对磁化效果影响较小。(4)磁桥的空气间隙对磁桥路内磁通密度分布的影响较大。Currently,the electromagnetic detection methods for mining steel wire ropes have limitations:the main flux detection method has low accuracy in detecting local damage,while magnetic leakage-based detection methods have limited quantitative accuracy in local damage assessment.A dual-source magnetic detection method was proposed to simultaneously detect both the main flux and magnetic leakage in mining steel wire ropes,leveraging the complementary strengths of these two methods in local damage detection.Two excitation loop designs were proposed:a double-source ring-shaped tubular excitation loop and an independent separation excitation loop.Finite element simulation was used to verify the feasibility of the two schemes,and the independent separation loop was chosen as the basic structure of the magnetic circuit.The effects of various armature parameters,such as size and magnet properties,on the magnetization performance were studied,as well as the influence of the magnetic bridge structure parameters on the magnetic field distribution.The results indicated that:(1) The magnetization amplitude was positively correlated with the number of loops and negatively correlated with the armature length,while the height had almost no effect on the magnetization performance;(2) The magnetization amplitude was positively correlated with the material grade,length,and thickness,and negatively correlated with the lift-off distance;(3) The magnetization amplitude was positively correlated with thickness,negatively correlated with air gap size,while lift-off distance had little effect on the magnetization performance;(4) The air gap of the magnetic bridge significantly influenced the magnetic flux density distribution within the bridge circuit.

关 键 词：矿用钢丝绳局部损伤 电磁无损检测 双源磁回路 主磁通 漏磁 

分 类 号：TD532[矿业工程—矿山机电]