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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.7: Operations, Applications, and Components >FATIGUE LIFE ASSESSMENT OF BOILER COMPONENTS UNDER CYCLIC OPERATING CONDITIONS
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FATIGUE LIFE ASSESSMENT OF BOILER COMPONENTS UNDER CYCLIC OPERATING CONDITIONS

机译：循环运行条件下锅炉零部件的疲劳寿命评估

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摘要

A fatigue life assessment application has been implemented using the methodology given in the European Standard EN 12952-3. The assessment application can use data from the Distributed Control System (DCS) of the plant or, to improve accuracy, use component metal temperatures if thermocouples have been fitted across the component of interest.Fatigue assessments have been carried out on typical high temperature components in Heat Recovery Steam Generators (HRSGs) and a large coal fired boiler which were subject to cyclic operation. The assessments carried out used recorded plant operating DCS and thermocouple data and examined main cyclic events, e.g. shutdown/cold start-up cycle, etc. Detailed finite element analyses have also been conducted on a typical superheater header using as input the plant operating data. Calculated fatigue damage levels for both methods are compared and it is shown that comparable values are obtained.In addition, further assessment has been performed on a component where the period of operation included several shutdown/cold start cycles and many sub-cycles.On completion of the above studies, Mitsui Babcock have implemented the fatigue assessment method into a simple plant life monitoring system.
机译：疲劳寿命评估应用程序已使用欧洲标准EN 12952-3中给出的方法实施。评估应用程序可以使用工厂的分布式控制系统（DCS）的数据，或者，为提高准确性，如果在目标组件上安装了热电偶，则可以使用组件金属温度。对典型的高温组件进行了疲劳评估。热量回收蒸汽发生器（HRSG）和大型燃煤锅炉要进行循环运行。进行的评估使用了已记录的工厂运行DCS和热电偶数据，并检查了主要的循环事件，例如还使用典型的过热器集管箱进行了详细的有限元分析，并使用了工厂运行数据作为输入。比较了两种方法的计算得出的疲劳损伤水平，结果表明可以得到可比较的值。此外，还对该组件的运行时间包括几个关闭/冷启动循环和许多子循环进行了进一步评估。在以上研究中，Mitsui Babcock已将疲劳评估方法应用于简单的植物寿命监控系统。

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