火力发电厂高温金属部件蠕变监测

电站高温金属部件的蠕变损伤是不可避免的,为在安全的前提下尽量延长其使用寿命,必须掌握高温金属部件材料损伤和老化情况.散斑图像相关分析技术(SPICA)是荷兰电力研究院(KEMA)经过20多年的研究而成功开发出的高温蠕变监测技术,可对电站高温部件的蠕变应变进行无损准在线监测,特别适用于监测焊缝热影响区的局部蠕变应变,在对高温管道进行直径(或周长)蠕变监测的传统方法被取消后,SPICA可以成为国内电站高温金属部件蠕变监测的替代技术.对KEMA的SPICA技术进行介绍,使国内的电站金属材料工作者了解这种蠕变监测的新方法.

Creep Monitoring of High Temperature Metal Parts in Power Plant

Creep damage of the high temperature metal parts in power plant is unavoidable.In order to prolong the service life under the premise of safety as far as possible,the damage and aging conditions of the high temperature metal parts must be studied.SPICA,a high temperature creep monitoring technology developped by KEMA over 20 years,is an nondestructive quasi-online monitoring for high-temperature creep strain components,especially suitable for monitoring of weld heat-affected zone local creep setrain.As the traditional creep monitoring method of the high temperautre pipe diameter(or circumference)is out of date,SPICA becomes alternative technologies for domestic power plants creep monitoring of high temperature metal parts.This paper is intended to introduce KEMA SPICA technology,so that the domestic power plant metal materials workers understand the new method of monitoring creep.