Development Of An Online Monitoring And Risk Life-cycle Management System For Power Plant Boiler

At present large capacity and high parameter unit has been more and more service in various power plant, thermal power unit heating components in long-term work under the condition of high temperature and high pressure, corrosion medium,with the extension of running time, the heating surface parts material creep damage happens, the micro structure of material aging occurs, resulting in the degradation of material mechanics performance, decreased the strength, plasticity and toughness,brittleness increases, reduced life spans. Especially in the peak load regulating operation unit, and its fatigue damage caused by frequent start-stop parts, resulting in parts of cracking, appear even serious accident.Therefore, key components to the high temperature condition assessment and evaluation on the basis of equipment state overhaul life, through the use of advanced means of monitoring, timely grasp equipment safety status and life loss, reasonably arrange maintenance projects and maintenance intervals, so as to effectively reduce maintenance costs, improve equipment safety and economy. Against this background,this paper puts forward the on-line monitoring of power plant boiler tubes and risk of life-cycle management system research, in order to provide some reference for power plant boiler tube life management.First of all, in this paper, on the basis of the power plant actual production data,study of boiler tube over temperature risk long-term trend forecast basic laws; Study over temperature management basic pattern for a long time. To establish risk management system module boiler tube over temperature. Study life of boiler tube monitoring technology model, constructs the risk unit boiler tube life-cycle management system.Secondly, through the research on boiler tube wall thickness of oxide, oxide skin loss risk calculation model is established, and then USES the risk management and integrated application of life management technology, form a new technology of boiler tube life risk management, to provide long-term, safe and reliable operation of a technical analysis, evaluation and management of the platform.Finally, through the development unit in heating mode on-line monitoring and risk life-cycle management research, timely grasp equipment safety status and life loss, grasp the boiler tube failure degree of risk, combining with the boiler tube life of online monitoring system of real-time monitoring and alarm function, and power plant can be reasonably schedule maintenance projects and maintenance interval optimization of boiler tube maintenance plan, so as to effectively reduce maintenance costs, improve equipment safety and economy, and form new equipment longevity risk management strategy.