文献类型：期刊文献

英文题名：Development of On-Line Monitoring Systems for High Temperature Components in Power Plants

作者：Zhang, Hongcai[1,2];Jia, Jiuhong[1];Wang, Ning[1];Hu, Xiaoyin[1];Tu, Shan-Tung[1];Zhou, Shaoping[1];Wang, Zhengdong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]SINOPEC Hubei Chem Fertilizer Branch, Zhijiang 443200, Peoples R China

年份：2013

卷号：13

期号：11

起止页码：15504

外文期刊名：SENSORS

收录：;EI(收录号：20134717013963);WOS:【SCI-EXPANDED(收录号:WOS:000330321100069)】；

基金：The authors are grateful for the support of China Natural Science Foundation of China (Nos. 11172102, 51175178) and Shanghai Natural Science Foundation (No. 13ZR1411200).

语种：英文

外文关键词：on-line monitoring system; strain; extensometer; high temperature; accuracy

摘要：To accurately detect deformation and extend the component life beyond the original design limits, structural safety monitoring techniques have attracted considerable attention in the power and process industries for decades. In this paper an on-line monitoring system for high temperature pipes in a power plant is developed. The extension-based sensing devices are amounted on straight pipes, T-Joints and elbows of a main steam pipeline. During on-site monitoring for more than two years, most of the sensors worked reliably and steadily. However, the direct strain gauge could not work for long periods because of the high temperature environment. Moreover, it is found that the installation and connection of the extensometers can have a significant influence on the measurement results. The on-line monitoring system has a good alarming function which is demonstrated by detecting a steam leakage of the header.