空气预热器用耐高温电涡流间隙传感器的研究  

Study on High Temperature Resistance Eddy Current Gap Sensor for Air Preheater

作　　者：蓝奇[1] 马伏花[1] 尹彩流[1] 农正[1] 

机构地区：[1]广西民族大学摩擦材料研究所,南宁530006

出　　处：《广西电力》2014年第2期1-3,共3页Guangxi Electric Power

基　　金：教育部科技重点项目(211137);广西教育厅科研项目(2013LX042);新世纪广西教育教改工程(2012JG136)

摘　　要：基于电涡流的基本原理,以镍铬合金导线为测量线圈,将导线绕制在陶瓷骨架上构成涡流探头,结合由信号源、放大模块和信号处理模块组成的前置器,设计制作了电涡流位移传感器.该传感器能在高温状态下、大温度变化范围（25～400℃）内长期稳定工作,具有结构简单、抗干扰能力强和测量精度较高等特点.Based on the principal of eddy current, an eddy current detector is made by taking the nichrome wire as measurement winding which is wound around the ceramic frame, and by combining the proximitor which is composed of signal source, amplifier module and signal processing module, the eddy current displacement sensor is designed and made. The sensor, which is able to work stably for a long time in high temperature and in a large variation range of temperature from 25-400℃, has characteristics of simple structure, strong anti-interference ability and higher measurement accuracy.

关 键 词：空气预热器 镍铬合金 漏风间隙 电涡流传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TM621.7[自动化与计算机技术—控制科学与工程]