智能弹性金属塑料推力瓦在线监测系统研究

Research on Intelligent Online Monitoring System of Elastic Metal-Plastic Thrust Tile

推力瓦在大型水轮发电机组中起到支撑机械旋转体、降低机械运动的摩擦系数等作用,在运行状态下以油温和瓦体温度作为监测指标,其中瓦体温度监测的滞后性成为制约水轮发电机组安全可靠运行的主要因素。研究提出一种智能弹性金属塑料推力瓦在线监测系统,集成传感器、数据采集、网络通信、数据融合等关键技术,形成数据分析诊断模型;在现行标准基础上,优化安装动态验收标准和机组运行状态标准,判断推力瓦的运行状态,进行早期预警和诊断。将智能弹性金属塑料推力瓦在线监测系统投用于洪家渡水电站1#机组以来,受力比处于合理区间,机组安装和运行均为良好状态。与传统推力瓦和旧标准相比,智能弹性金属塑料推力瓦在线监测系统能够在早期对推力瓦故障进行黄色预警和诊断,有效避免故障停机,满足安全、智能、绿色等理念。

The thrust tile plays roles such as supporting the mechanical rotating body and reducing the friction coefficient of the mechanical movement in the large-scale water-turbine generator units.In its running state,the oil temperature and tile temperature are used as monitoring indicators,but the lag of tile temperature monitoring becomes the main factor restricting the safe and reliable operation of waterturbine generator units.An intelligent online monitoring system of elastic metal-plastic thrust tiles was proposed,which integrated key technologies such as sensor,data acquisition,network communication and data fusion,as to form a data analysis and diagnosis model.On the basis of the current standards,by optimizing the installation dynamic acceptance standards and the unit running state standards,the running state of the thrust tiles was judged to make early warnings and diagnosis.Since the intelligent online monitoring system of elastic metal-plastic thrust tiles was put into use in the 1#Hongjiadu Hydropower Station,the force ratio has been in a reasonable range,and the installation and operation of the units are in good conditions.Compared with the traditional thrust tiles and the old standards,the intelligent online monitoring system of elastic metal-plastic thrust tiles can give yellow warnings and diagnosis to the thrust tile failure in the early stage,effectively avoid the failure and shutdown,and meet the concepts such as safety,intelligence and green.