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Development of elements of the condition monitoring system of turbo generators of thermal power stations and nuclear power plants

机译：火力发电厂和核电站涡轮发电机状态监测系统元件的开发

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摘要

The rationale is given for the improvement of the regulatory framework for the use of shaft sensors for the in-service condition monitoring of turbo generators and the development of control systems of shaft surfacing and misalignments of supports. A modern concept and a set of methods are proposed for the condition monitoring of the “shaft line-thrust bearing oil film-turbo generator supports” system elements based on the domestic COMPACS® technology. The system raw data are design, technology, installation, and operating parameters of the turbo generator as well as measured parameters of the absolute vibration of supports and mechanical quantities, relative displacements and relative vibration of the rotor teeth in accordance with GOST R 55263-2012. The precalculated shaft line assembly line in the cold state, the nominal parameters of rotor teeth positions on the dynamic equilibrium curve, the static and dynamic characteristics of the oil film of thrust bearings, and the shaft line stiffness matrix of unit support displacements have been introduced into the system. Using the COMPACS-T system, it is planned to measure positions and oscillations of rotor teeth, to count corresponding static and dynamic characteristics of the oil film, and the static and dynamic loads in the supports in real time. Using the obtained data, the system must determine the misalignments of supports and corrective alignments of rotors of coupling halves, voltages in rotor teeth, welds, and bolts of the coupling halves, and provide automatic conclusion if condition monitoring parameters correspond to standard values. A part of the methodological support for the proposed system is presented, including methods for determining static reactions of supports under load, the method for determining shaft line stiffness matrices, and the method for solving the inverse problem, i.e., the determination of the misalignments of the supports by measurements of rotor teeth relative positions in bearing housings. The procedure for calculating misalignments of turbo generator shaft line supports is set out.
机译：给出的理由是，改进了将轴传感器用于涡轮发电机的运行状态监测的监管框架，并开发了轴面和支架未对准的控制系统。提出了一种现代的概念和一套方法，用于基于国产COMPACS®技术的“轴-止推轴承油膜-涡轮发电机支架”系统元件的状态监测。系统原始数据包括涡轮发电机的设计，技术，安装和运行参数，以及根据GOST R 55263-2012测得的支架绝对振动和机械参数，转子齿的相对位移和相对振动的参数。介绍了冷态下的预计算线装配线，动平衡曲线上转子齿位置的名义参数，推力轴承油膜的静动态特性，单元支撑位移的轴线刚度矩阵。进入系统。计划使用COMPACS-T系统来测量转子齿的位置和振动，以实时计算油膜的相应静态和动态特性以及支架中的静态和动态载荷。使用获得的数据，系统必须确定半联轴器的支架不对中和转子的校正对中，半联轴器的转子齿中的电压，焊缝和螺栓中的电压，并且如果状态监视参数​​与标准值相对应，则可以自动得出结论。提出了所提出系统的一部分方法学支持，包括确定负载下支架静态反应的方法，确定轴刚度矩阵的方法以及解决反问题（即确定轴承的未对准）的方法。通过测量转子齿在轴承箱中的相对位置来支撑。阐述了计算涡轮发电机轴线支架的不对中的程序。

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