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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 >LIFE ASSESSMENT BY MONITORING BIAXIAL STRAIN-RATES IN HIGH TEMPERATURE STEAM PIPELINES
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LIFE ASSESSMENT BY MONITORING BIAXIAL STRAIN-RATES IN HIGH TEMPERATURE STEAM PIPELINES

机译：通过监测高温蒸汽管道中的双轴应变率来进行寿命评估

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摘要

Most of the main coal fired stations in the UK are operating beyond their original design life and it is essential to be able to manage the integrity of the high temperature pipework systems, for both commercial and safety reasons. The fossil fired plant in the UK has operated flexibly for a number of years, which complicates the remanent life assessment of a pipework system.This paper specifically addresses monitoring the creep strain accumulation over time of high temperature pressurized steam pipes in order to better quantify the remanent life and thereby provide improved advice on run/repair/replace issues. Any monitoring instrumentation needs to be rugged and able to endure what is a hostile environment and provide reliable strain measurements in both the longitudinal and circumferential directions of the pipe.This paper presents one monitoring method that has been developed for service use. The monitoring system uses a specially designed strain gauge that carries optical targets, image capture and analysis is used to determine the in-service creep strain rates. Experiences from site installations will be described.
机译：英国大多数主要燃煤电站的运行都超出了其最初的设计寿命，出于商业和安全原因，必须能够管理高温管道系统的完整性。英国的化石燃料发电厂已经灵活运营了许多年，这使管道系统的剩余寿命评估变得复杂。本文专门针对监控高温高压蒸汽管道随时间推移而产生的蠕变应变积累问题，以便更好地量化保留生命，从而提供有关运行/维修/更换问题的改进建议。任何监测仪器都需要坚固耐用，并且能够承受恶劣的环境，并能够在管道的纵向和圆周方向上提供可靠的应变测量。本文介绍了一种已开发用于服务的监测方法。监控系统使用专门设计的应变仪，该应变仪带有光学目标，图像捕获和分析用于确定在役蠕变应变率。将说明现场安装的经验。

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