Research on Daily Maintenance and Management of Weighing Instruments in Thermal Power Plants

As core measuring instruments throughout the whole production process of thermal power plants, weighing instruments feature metering accuracy and operational stability that directly affect production quality, unit safety and corporate benefits. According to their applications, weighing instruments in thermal power plants fall into two categories: special weighing instruments for boiler maintenance (electronic crane scales and loss-in-weight feeders) and fuel weighing instruments for routine use (belt scales and truck scales). These two categories differ in functions and metering requirements: electronic crane scales and truck scales are subject to mandatory verification, belt scales require calibration, and timing scales are verified or calibrated as needed. Nevertheless, scientific verification/calibration and standardized daily maintenance and management are required for all of them to guarantee metering precision. A comprehensive daily maintenance and management strategy is established from four aspects: routine cleaning and inspection, periodic in-depth maintenance, emergency fault handling and professional personnel management. Proper on-site verification/calibration and standardized daily maintenance and management of weighing instruments can effectively eliminate metering deviations, reduce fault frequency, extend equipment service life and sustain stable operation of weighing instruments. It provides solid support for the accurate routine production and smooth boiler maintenance of thermal power plants, and also offers references for the daily maintenance and management of weighing instruments in similar thermal power plants.