摘要
为了实现磁力泵轴承磨损实时监测,设计了一种新颖的磁力泵滑动轴承磨损传感器.针对磁力泵采用特殊的传感器结构,变曲面测量为平面测量,经过防腐处理的导磁材料制作的检测轮固定在内磁转子上,检测探头固定在隔离套上的环型嵌槽内,其一端为密闭罐形,另一端为检测工作平面,并与检测轮平面相对,检测磁钢、导磁体、导磁体铁额与霍尔集成电路均放置在检测探头内,检测探头与检测轮组成闭环检测磁路.采用磁路分析法,对检测探头和检测轮磁路简化.传感器确定后,磁路各参数如导磁体磁导、磁钢磁动势、磁路截面积等均为常数,因而霍尔集成电路输出电压与检测探头铁额的面积变化量关联,即和检测轮移动量δ关联.通过磁力泵 X 轴差分检测传感器试验,传感器的位移特性曲线线性度得到改善,分辨率为0.1 mm,测量精度为0.1~2.3,传感器灵敏度为10 mV/mm,该传感器对实现磁力泵轴承磨损实时监测具有一定的应用价值.
A novel sensor was designed to realize real-time monitoring of sliding bearing wear in magnetic drive pumps. Based on the structure of magnetic drive pumps,a special sensor structure in which the curved surface measurement was converted into a plane measurement with a detecting wheel was put forward. The detecting wheel made of an anti-corrosion treated magnetic material was fixed on the inner magnetic rotor,and the detecting sensor was installed in the ring-shaped recessed groove in the containment shell. The sensor was a container with a flat detecting plane,which was opposite to the detecting wheel in the axial direction. The sensor was composed of magnet,magnetic flux concentrator and its forehead as well as the Hall IC. The detecting sensor and the detecting wheel formed a closed magnetic circuit. Through magnetic circuit analysis,the magnetic circuit was simplified. After the sensor size was decided,all the parameters of the magnetic circuit such as the magnetic permeability of the magnet,the magnetomotive force of the magnet,and the cross-sectional area of the magnetic circuit were constant,thus the output voltage of the Hall IC was related to the change in the area of the magnetic flux concentrator forehead. So,it was associated with radial displacement δ of the detecting wheel. The resolution was 0.122 mm,the linearity was 0.1-2.3,the sensitivity of the sensor was 10 mV/mm and the linearity of the displacement characteristic curve of the sensor was improved. The sensor designed has certain application significance for real-time monitoring of sliding bearing wear in magnetic drive pumps.
作者
曾培
曾昊
徐德富
郭晓军
李永亮
叶子兆
ZENG Pei;ZENG Hao;XU Defu;GOU Xiaojun;LI Yongliang;YE Zizao(National Research Center of Pumps, Jiangsu University, Zhenjiang,Jiangsu 212013,China;KYB Industrial Machinery (Zhen jiang) Ltd.,Zhenjiang,Jiangsu 212000,China;Jiangsu Xintengyu Fluid Equipment Manufacturing Co. Ltd.,Shuyang,Jiangsu 223600,China;Zhejiang Windey Co. Ltd.,Hangzhou,Zhejiang 310012,China;Zhejiang Tengyu Pump & Valve Equipment Co. Ltd.,Wenzhou,Zhejiang 325006,China)
出处
《排灌机械工程学报》
EI
CSCD
北大核心
2019年第5期400-405,共6页
Journal of Drainage and Irrigation Machinery Engineering
基金
浙江省科技厅国内科技合作与成果引进转化项目(2006C16078)
浙江省工业新产品试制试产计划项目(2006111C0024)
国家中小企业技术创新基金资助项目(09c26213304007)
关键词
磁力泵
传感器
滑动轴承
磨损
监控
magnetic drive pump
sensor
sliding bearing
wear
monitoring
