TRT机组在线监测及故障诊断系统研究

发布时间：2018-06-23 15:14

本文选题：TRT机组 + Labview　；参考：《广州大学》2012年硕士论文

【摘要】：TRT机组在钢铁行业中的作用十分显著，它不仅能够回收高炉煤气的余压余热进行发电，而且还能稳定锅炉压力，减少炉况波动，使高炉稳定高产。TRT机组的机械设备主要包括透平机、发电机、励磁机以及相关的传动轴和轴承等机械部件。由于旋转机械设备要求精度高、工作稳定，才能保证企业的安全生产，因此通过振动检测系统来实时监测TRT机组工作时的实际振动状况是很有必要的。本课题研究出一套TRT机组在线振动监测及故障诊断分析系统，全方位地监测TRT机组的振动参数，对提高TRT机组的工作寿命以及保证企业的安全生产具有重大的意义。 TRT机组在线监测及故障诊断系统用来监测TRT机组的运行状况以及对其故障进行诊断和分析。它主要包括信号采集、分析处理、在线动平衡、转子故障诊断等几方面的功能。根据目前国内外成熟的技术和未来发展，融合当今先进的信号分析技术和理论，本文研究出了一套完善、可靠、高精度的信号测量与分析系统。本论文详细介绍系统设计的总体方案、硬件设计、软件设计以及测试分析。以电涡流位移传感器、压电式加速度传感器、光电传感器、微电机三轴加速度传感器、信号调放大模块、USB数据采集卡等硬件为基础，在Labview虚拟仪器平台上开发出软件系统。根据TRT机组及旋转机械的运动特点，本论文采用了不同的现代信号处理技术对信号的特征进行分析与处理，同时设计多种形式的图形显示。在系统软件中应用了强大的数据处理分析功能，从而实现了对TRT机组的多通道分析、转子碰磨故障诊断、动平衡计算、多信号相关分析、小波分析以及各种频谱分析的相关应用；同时借助Labview提供的功能节点以及MATLAB软件接口，利用MATLAB信号处理函数，提高了系统的信号处理能力。此外，本论文还研究了系统的测试方法，通过两台高精度的转子试验台以及本特利RK-4高速转子试验台对TRT机组的运行状况进行模拟，从八通道信号的采集处理以及高速转子的碰磨试验来对系统性能进行较完整的测试，，并实现了对TRT机组测试的相关功能验证。研究结果表明，TRT机组振动监测及故障诊断系统具有测量精度高、功能强大、扩展性高、界面友好、携带方便、测量范围大、可同时采集测点多等特点，并且能对不同的测点和设备实现多通道信号同步测量，基本上满足了对TRT机组进行振动监测及故障诊断的预期功能。
[Abstract]:The TRT unit plays a very important role in the iron and steel industry. It can not only recover the residual pressure of blast furnace gas for generating electricity, but also stabilize the boiler pressure and reduce the fluctuation of furnace condition. The mechanical equipment for stabilizing and producing blast furnace. TRT unit mainly includes turbine generator exciter and related mechanical parts such as drive shaft and bearing. Because of the high precision and stable operation of rotating machinery equipment, it is necessary to monitor the actual vibration condition of TRT unit in real time by vibration detection system. In this paper, an on-line vibration monitoring and fault diagnosis and analysis system for TRT units is developed, which can monitor the vibration parameters of TRT units in all directions. The on-line monitoring and fault diagnosis system of TRT unit is used to monitor the operation condition of TRT unit and to diagnose and analyze its faults. It mainly includes signal acquisition, analysis and processing, online dynamic balance, rotor fault diagnosis and other functions. According to the mature technology and future development at home and abroad and the fusion of the advanced signal analysis technology and theory, a set of perfect, reliable and high precision signal measurement and analysis system has been developed in this paper. This paper introduces the system design in detail, hardware design, software design and test analysis. Based on eddy current displacement sensor, piezoelectric acceleration sensor, photoelectric sensor, triaxial acceleration sensor of micromotor and USB data acquisition card, a software system is developed on LabVIEW virtual instrument platform. According to the motion characteristics of TRT units and rotating machinery, different modern signal processing techniques are used to analyze and process the characteristics of signals, and various forms of graphic display are designed at the same time. The powerful function of data processing and analysis is applied in the system software, which realizes the multi-channel analysis, rotor rubbing fault diagnosis, dynamic balance calculation and multi-signal correlation analysis of TRT unit. At the same time, with the help of the function node provided by LabVIEW and the software interface of MATLAB, the signal processing function of MATLAB is used to improve the signal processing ability of the system. In addition, this paper also studies the test method of the system, and simulates the operation condition of TRT unit by two high precision rotor test bench and Bentley RK-4 high-speed rotor test bed. The system performance is tested by collecting and processing 8-channel signal and rubbing test of high-speed rotor, and the related function verification of TRT unit is realized. The research results show that the vibration monitoring and fault diagnosis system of TRT unit has the characteristics of high measuring precision, powerful function, high expansibility, friendly interface, convenient carrying, wide measuring range, and the ability to collect many measuring points at the same time. And the multi-channel signal synchronous measurement can be realized for different measuring points and equipments, which basically meets the expected function of vibration monitoring and fault diagnosis for TRT units.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP277;TH165.3

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