火电厂锅炉受热面管弯头在役涡流检测装置研究

doi:10.11930/j.issn.1004-9649.2016.11.129.06

中国电力 ›› 2016, Vol. 49 ›› Issue (11): 129-134.DOI: 10.11930/j.issn.1004-9649.2016.11.129.06

火电厂锅炉受热面管弯头在役涡流检测装置研究

刘云龙¹, 李登科¹, 秦永亮², 熊亮¹, 沈丁杰¹, 龙毅¹

1. 国网湖南省电力公司电力科学研究院,湖南长沙 410007;
2. 神华国能宁夏煤电有限公司,宁夏银川 750410

收稿日期:2016-08-16 出版日期:2016-11-10 发布日期:2016-12-09
作者简介:刘云龙（1985—）,男,湖南长沙人,博士,工程师,从事电力系统检测设备与方法研究。E-mail: 13874809964@163.com

Study on Online Eddy Current Detecting of the Boiler Heating Surface Tube Elbow in Thermal Power Plants

LIU Yunlong¹, LI Dengke¹, QIN Yongliang², XIONG Liang¹, SHEN Dingjie¹, LONG Yi¹

1. State Grid Hunan Electric Power Company Research Institute, Changsha 410007, China;
2. Shenhua Guoneng Ningxia Thermal Power Plant, Yinchuan 750410, China

Received:2016-08-16 Online:2016-11-10 Published:2016-12-09

摘要/Abstract

摘要： 针对电厂锅炉受热面管在役检测中所具有的两端封闭、管屏间安装紧密以及检测空间狭小等特点,设计了一种可用于奥氏体不锈钢小径管弯头的外放置式马鞍形涡流检测探头装置,按照涡流检测技术标准要求,采用火电厂备用管材加工制作了对比试样管,通过试样检测和现场应用,结果表明：所研制的马鞍形涡流检测探头装置对0.2 mm深以上线性缺陷和D1.4 mm以上孔状缺陷具有较高的检测灵敏度和可靠度,能针对火电厂锅炉受热面管氧化腐蚀较严重,且应力较集中的奥氏体不锈钢弯头部位,实现其在役无损检测。

关键词: 锅炉受热面管, 小径管弯头, 在役检测, 涡流检测, 马鞍形探头

Abstract: According to the characteristics of the closed ends, the tight tube panel layouts and the narrow detecting space in online eddy current detecting of the boiler heating surface tube elbow in thermal power plants, an external placed saddle-shaped eddy current detecting probe is designed, which can be used to test the small diameter austenitic stainless steel tube elbow. The comparative sample tube is made in accordance with the eddy current detecting technical standards. Through the sample testing and the applications in thermal power plants, the results show that the designed saddle-shaped eddy current detecting device has better sensitivity and reliability to the linear defects more than 0.2 mm deep and the hole-like defects larger than D1.4 mm. It can realize the non-destructive online testing of the austenitic stainless steel tube elbow that has serious oxidation and corrosion as well as more concentrated stress.

Key words: boiler heating surface tube, small diameter tube elbow, testing in service, eddy current testing, saddle probe

中图分类号:

TM621

刘云龙, 李登科, 秦永亮, 熊亮, 沈丁杰, 龙毅. 火电厂锅炉受热面管弯头在役涡流检测装置研究[J]. 中国电力, 2016, 49(11): 129-134.

LIU Yunlong, LI Dengke, QIN Yongliang, XIONG Liang, SHEN Dingjie, LONG Yi. Study on Online Eddy Current Detecting of the Boiler Heating Surface Tube Elbow in Thermal Power Plants[J]. Electric Power, 2016, 49(11): 129-134.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.11.129.06

https://www.electricpower.com.cn/CN/Y2016/V49/I11/129

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火电厂锅炉受热面管弯头在役涡流检测装置研究

Study on Online Eddy Current Detecting of the Boiler Heating Surface Tube Elbow in Thermal Power Plants

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火电厂锅炉受热面管弯头在役涡流检测装置研究

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