基于双环电阻传感器的管道内壁腐蚀监测技术研究

doi:10.3901/JME.2015.24.015

机械工程学报 ›› 2015, Vol. 51 ›› Issue (24): 15-23.doi: 10.3901/JME.2015.24.015

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基于双环电阻传感器的管道内壁腐蚀监测技术研究

黄一¹, 徐云泽¹, 王晓娜², 李小龙³, 涂三山¹

1. 大连理工大学船舶工程学院大连 116024；
2. 大连理工大学物理与光电工程学院大连 116024；
3. 中海石油深海开发有限公司珠海 519000

收稿日期:2015-01-20 修回日期:2015-07-30 出版日期:2015-12-15 发布日期:2015-12-15
通讯作者: 王晓娜，女，1976年出生，高级工程师。主要研究方向为传感器及其在油气田中的应用。 E-mail：wangxn@dlut.edu.cn
作者简介:黄一，男，1964年出生，教授。主要研究方向为船舶与海洋结构物腐蚀机理与防护。 E-mail：huangyi@dlut.edu.cn
基金资助:
“十二五”国家科技重大专项资助项目(2011ZX05056)

Study of the Pipeline Inner Corrosion Monitoring Technique Based on Ring Pair Electrical Resistance Sensor#br#

HUANG Yi¹, XU Yunze¹, WANG Xiaona², LI Xiaolong³, TU Sanshan¹

1. School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024;
2. School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024;
3. China Offshore Oil Development Co., Ltd., Zhuhai 519000

Received:2015-01-20 Revised:2015-07-30 Online:2015-12-15 Published:2015-12-15

摘要/Abstract

摘要： 为实现管道内壁腐蚀的全周向在线监测并提高测量精度，在传统电阻法的基础上提出一种基于双环电阻探针的腐蚀监测方法。双环电阻探针解决了由于几何限制和管道内外壁温差所带来的测量误差。通过对双环探针进行多象限分区，求解各分区的电阻比值，实现了管道全方位的在线腐蚀监测。通过双环探针可以同时实现对管道内外壁的温差计算与实时监测，为湿蒸汽管道冷凝液膜的形成起到预报作用。基于以上研究基础，在实验室X65模拟管路中，分别布置四象限分区双环电阻传感器、传统丝状电阻传感器和高精度热电偶对管道的腐蚀和内外壁温差进行实时监测。试验结果表明：基于新型双环探针的管道内壁腐蚀监测方法，可以完成管道内外壁温差和局部分区腐蚀状态的在线监测，并在腐蚀深度和腐蚀速率的测量上比传统丝状电阻探针具有更高的监测精度。

关键词: 电阻法, 腐蚀深度, 管道, 双环探针, 温差

Abstract: To realize the pipeline whole circumference inner corrosion on-line monitoring and promote the measurement accuracy, a new method based on the traditional electrical resistance(ER) approach is developed for corrosion monitoring on account of the new type ring pair ER probe. The measuring error produced by the geometry restriction and temperature difference can be solved through the ring pair probe. Through the set of multi segments on the circumference of the ring pair and the calculation of resistance ratio of each segment, the pipeline whole direct on-line corrosion monitoring is realized. The temperature difference between the inner pipe wall and outer pipe wall can also be calculated and monitored through the ring pair method. The formation of the condensate liquid film in the vapor transportation pipeline can be forecasted. Based on the research, a four quadrants ring pair sensor, traditional wire ER sensor and high accuracy thermocouples are arranged into the X65 pipeline which is placed in the laboratory to monitor the pipeline inner corrosion and the temperature difference between the inner and outer pipe wall. The results shows that the method which uses the new type ring pair ER probe can measure the temperature difference between the inner and outer pipe wall. And through the comparison with the corrosion coupon, it is found that the ring pair ER sensor had high measurement accuracy on the corrosion depth and corrosion rate than the traditional wire ER sensor.

黄一, 徐云泽, 王晓娜, 李小龙, 涂三山. 基于双环电阻传感器的管道内壁腐蚀监测技术研究[J]. 机械工程学报, 2015, 51(24): 15-23.

HUANG Yi, XU Yunze, WANG Xiaona, LI Xiaolong, TU Sanshan. Study of the Pipeline Inner Corrosion Monitoring Technique Based on Ring Pair Electrical Resistance Sensor#br#[J]. Journal of Mechanical Engineering, 2015, 51(24): 15-23.

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基于双环电阻传感器的管道内壁腐蚀监测技术研究

Study of the Pipeline Inner Corrosion Monitoring Technique Based on Ring Pair Electrical Resistance Sensor#br#

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