第53卷第4期 2017年2月
机械工程学报
JOURNAL OF MECHANICALENGINEERING
DOI:10.3901/JME.2017.04.134
Vo1.53 Feb.
基于碲化镉量子点的滚动轴承内圈测温
原理与实现技术* 闫柯高闯朱永生洪军
(西安交通大学现代设计与转子轴承系统教育部重点实验室西安710049)
No.4 2017
摘要：滚动轴承高速运转时，内圈温度对轴承早期故障信息更加敏感，研究内圈温度测量技术能更好监测轴承的运行状态。基于量子点材料的感温感光特性，提出一种滚动轴承旋转组件(内圈、保持架等)温度测试新思路一利用量子点材料激发的
制备工艺的确化镭量子点制备成PDDA聚电解质-CdTe量子点复合薄膜温度传感器，并对量子点温度传感器特征参数(峰值波长、荧光强度和半峰宽等)进行热特性研究，实现了其峰值波长与所感知环境温度变化的线性关系，并在不同温度循环及旋转条件下进行验证及测试标定。设计试验台，开展角接触球轴承内圈温度的在线试验测试，实现了滚动轴承服役条件下内图的非接触测温技术，获取了轴承内圈温升历程曲线，并利用传统热电偶测试方法进行了间接验证。
关键词：滚动轴承；确化镉量子点；旋转组件测温；非接触测温技术中图分类号：TH133
ResearchontheTemperatureMeasurementPrincipleandRealization TechnologyofRollingBearingInnerRingBasedonCdTeQuantumDots
YANKeGAOChuang2
ZHUYongshengHONGJun
(Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System,
Xian Jiaotong University, Xi'an 710049)
Abstract: In condition ofhigh rotation speed,the inner ring temperature is more sensitive to the early fault information ofbearing. Thus the research on the inner ring temperature measurement technology can better monitor the working condition of the bearing. Based on the temperature sensitive properties of quantum dots, a noval idea for rolling bearing rotating assembly (inner ring, cage, ctc.) temperature measurement, using fluorescence spectra characteristics to obtain the surface temperature information of bearing rotating assembly, is proposed. The non-contact temperature measurement principle of CdTe quantum dots is briefly introduced. The DDA polyelectrolyteCdTe quantum dot composited film of temperature sensor is prepared, according to the layer-by-layer self-assembly method. The properties of parameters, such as spectrum intensity, peak wavelength and the full width at half maximum of CdTe quantum dots, and the linear reversible change of the peak wavelength of quantum dot with temperature, are obtained, which is verified and calibrated in different temperature cycle and rotation regime. The experimental rig is set up to mcasure the inner ring temperature of angular contact ball bearing in working condition, and the non-contact temperature measurement technology rolling bearing inner ring is realized. The inner ring temperature rise curve of inner ring is obtained successfully. The indirect verification is carried out using the traditional thermocouple test method which indicates the error of the new method meets the engineering requirement
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高速轴承温升状态的最主要性能指标。鉴于常规接
前言 0
服役运行温度是反映轴承内部摩擦生热、评判
*国家白然科学基金青年科学基金(51405375)、陕西省自然科学基金(2015JQ5159)和中央高校基本科研业务费专项资金(xij2013104)资助项
目。20160321收到初稿，20161206收到修改稿万方数据
触式测温方法的限制，一般通过获取静止套圈(多为外圈)温度间接监测轴承运行状态。随着极限转速的不断提高，轴承内外圈温差显著增大，内圈、保持架等旋转组件对轴承的故障信息反映更为直接迅速[]，因此对其温度的监测显得尤为重要。然而：受高速旋转、内部空间获小、油脂油污等因素的影