在线式铁谱仪中磨粒的分布研究

发布时间：2019-05-30 05:36

【摘要】：机械设备在运转过程中，，由于摩擦副零件表面的相对运动和相互接触，不可避免地要产生摩擦磨损，零部件的磨损失效是机械中最常见、最主要的失效形式，而油液磨粒监测是机械设备磨损状态监测的重要手段。针对现有磨粒在线监测技术存在的不足，本文以铁谱分析技术为基础，对磨粒在线监测技术进行了以下方面的研究：（1）开发了一款监测信息全面的全流量在线式磨粒监测传感器。以铁谱分析方法为基础，根据铁谱分析的原理开发了一款基于图像的全流量在线式铁谱分析传感器，并搭建了与之相适应的实验平台。（2）研究了磨粒在在线式铁谱仪中的沉积分布规律，并通过改变磁场和流道的参数研究磨粒在不同使用条件下的沉积分布。在此过程中，基于磁场对磨粒沉积分布的影响，以环形磁铁为磁场的产生源，研究了环形磁铁在不同嵌套和装配方式下的磁场分布。（3）研究了磨粒在在线式铁谱仪中的粒度分布规律。运用直方图规定化等图像处理方法测量了不同沉积区域内磨粒的粒度，以颗粒群的粒度分布理论为基础绘制了不同沉积区域磨粒粒度的矩形分布图，研究了磨粒在不同沉积区域粒度分布的差异，并给出了整个沉积区域内磨粒粒度的分布形式。
[Abstract]:In the process of operation of mechanical equipment, due to the relative motion and contact of the surface of the parts of the friction pair, friction and wear will inevitably occur. The wear failure of the parts is the most common and the most important form of failure in the machinery. The monitoring of oil abrasive particles is an important means to monitor the wear state of mechanical equipment. In view of the shortcomings of the existing on-line monitoring technology of abrasive particles, this paper is based on ferrography analysis technology. The on-line monitoring technology of abrasive particles is studied as follows: (1) A full flow on-line abrasive particle monitoring sensor with comprehensive monitoring information is developed. Based on the ferrography analysis method, a full flow on-line ferrography analysis sensor based on image is developed according to the principle of ferrography analysis, and a suitable experimental platform is built. (2) the deposition distribution of abrasive particles in on-line iron spectrometer is studied, and the deposition distribution of abrasive particles under different conditions is studied by changing the parameters of magnetic field and flow channel. In this process, based on the effect of magnetic field on the deposition distribution of abrasive particles, the magnetic field distribution of annular magnet under different nesting and assembly modes is studied by using annular magnet as the source of magnetic field. (3) the particle size distribution of abrasive particles in on-line iron spectrometer was studied. The grain size of abrasive particles in different sedimentary areas was measured by histogram specification and other image processing methods, and the rectangular distribution maps of abrasive particle sizes in different sedimentary areas were drawn on the basis of the particle size distribution theory of particle groups. The difference of particle size distribution in different sedimentary regions is studied, and the distribution form of abrasive particle size in the whole sedimentary area is given.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH117.1;TH165.3

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