一种用于油液磨粒监测的多线圈阻抗传感器  

Impedance Sensor with Multi-coil for Oil Debris Monitoring

作　　者：顾长智[1] 史皓天 张洪朋 马来好 孙玉清[1] GU Changzhi;SHI Haotian;ZHANG Hongpeng;MA Laihao;SUN Yuqing(Marine Engineering College,Dalian Maritime University,Dalian 116026)

机构地区：[1]大连海事大学轮机工程学院,大连116026

出　　处：《机械工程学报》2022年第12期10-17,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51679022);大连市科技创新基金(2019J12GX023);兴辽人才计划(XLYC20074)资助项目。

摘　　要：液压油是机械设备的关键介质,其携带的磨粒可反映设备的运行状态,有效地预测设备的早期故障,达到预知维修。为了实现液压油磨粒监测,设计并研究一种多线圈阻抗传感器。其中硅钢片用来增强检测区域的磁场强度,双矩形检测通道可以充分利用磁场分布区域,从而提高传感器的检测精度和通量。串并联线圈的对比试验表明,线圈同向串联时,传感器具有较高的检测灵敏度,更适合于磨粒的监测。该多线圈阻抗传感器可根据电感脉冲信号的方向以及电阻和电感脉冲信号的有无来判断区分金属磨粒的属性,可有效检测和区分的最小金属磨粒为46μm的铁颗粒和110μm的铜颗粒。此类阻抗式磨粒传感器基于电感和电阻两个参数进行检测可以获得更为准确的磨粒信息,弥补传统电感式传感器对非铁磁性金属磨粒检测精度有限的不足。Hydraulic oil is the key medium of mechanical equipment.The wear debris carried in hydraulic oil can reflect the operating state of the equipment,effectively predict the early failure of the equipment,and achieve predictive maintenance.In order to monitor the wear debris in hydraulic oil,an impedance sensor with multi-coil is designed and studied.The silicon steel strips are used to enhance the magnetic field strength of the detection region,the rectangular channels can make full use of the magnetic field distribution region,thereby improving the detection sensitivity and throughput of the sensor.The comparison experiment of series-parallel coils shows that the sensor has higher detection sensitivity and is more suitable to detect wear debris when the coils are connected in series in the same direction.The impedance sensor with multi-coil can judge the properties of the metal debris according to the direction of the inductance signal and the presence or absence of the resistance and inductance signals.The smallest metal debris that can be detected and distinguished by the sensor are 46μm iron particle and 110μm copper particle.The impedance debris sensor can obtain more accurate debris information based on the two parameters of inductance and resistance,which makes up for the insufficiency of the limited accuracy of traditional inductance sensors for non-ferromagnetic metal debris.

关 键 词：阻抗式传感器 磨粒 液压油 多线圈 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH73[自动化与计算机技术—控制科学与工程]