Influence of temperature on corrosion measurement by dry coupled piezoelectric sensor and its compensation method
-
摘要: 在内部流体介质冲刷与腐蚀作用下，油气井口装置易出现腐蚀减薄缺陷，形成潜在的泄漏风险。干耦合压电传感方法因具有高稳定性和高可靠性，可应用于井口装置腐蚀在线监测与评价中。实际作业过程中，流体介质状态与环境温度变化会导致被测井口装置工作温度发生变化，从而影响腐蚀测量精度。针对极端温度条件下井口装置腐蚀监测的难点，分析了极端温度变化对井口材料声速与耦合材料性能的影响规律，在此基础上提出一种基于温度补偿的干耦合压电传感方法与系统，并进行了井口装置现场腐蚀监测验证试验。试验结果证明，采用基于实时温度测量的壁厚补偿算法后，干耦合压电传感腐蚀监测系统具有较高的精度与稳定性。Abstract: Under the erosion and corrosion of internal fluid medium, the wellhead equipment is prone to corrosion and thinning defects, forming a potential risk of leakage. Because of its high stability and reliability, dry coupled piezoelectric sensing method can be applied to online monitoring and evaluation of wellhead corrosion. In the actual operation process, due to the change of fluid medium state and environmental temperature, the working temperature of the tested wellhead equipment changes, which will affect the accuracy of corrosion measurement. In this paper, aiming at the difficulties of wellhead corrosion monitoring under extreme temperature conditions, the influence of extreme temperature change on the sound velocity of steel and coupling material is analyzed. On this basis, a dry coupling piezoelectric sensing method and system based on temperature compensation is proposed, and verification experiment is carried out. The application results show that the dry coupled piezoelectric sensing corrosion monitoring system has high accuracy and stability in the working temperature range of wellhead equipment by using the wall thickness compensation algorithm based on real-time temperature measurement.
-
Keywords:
- wellhead equipment /
- erosion corrosion /
- dry coupling sensor /
- temperature /
- sound velocity
-
-
[1] 傅登伟, 邱福寿, 彭辉, 等.在役高风险井口装置腐蚀检测技术探讨[J].石油工程建设, 2020, 46(5):25-28. [2] 孔嫦娥, 王仕强, 张宝, 等.超声相控阵检测技术在采油气井口装置的应用[J].机械设计与制造工程, 2019, 48(6):113-116. [3] 刘海锋, 王虎, 刘伟, 等.基于短栅区光纤光栅传感器的油气管线腐蚀在线监测系统研究[J].传感技术学报, 2013, 26(10):1379-1383. [4] 任亮, 程祥, 姜涛.基于光纤光栅应变箍传感器的管道局部腐蚀监测[J].油气储运, 2017, 36(3):303-309. [5] LI H,HERSZBERG I,MOURITZ A P,et al. Sensitivity of embedded fibre optic Bragg grating sensors to disbonds in bonded composite ship joints[J]. Composite Structures, 2004, 66:239-248.
[6] LÜPEZ-HIGUERZ L M, COBO L R, INCERA A Q, et al. Fiber optic sensors in structural health monitoring[J]. Journal of Lightwave Technology, 2011, 29(4):587-608.
[7] 李绍星, 唐志峰, 吕福在, 等.基于超声导波的管道损伤监测云系统[J].无损检测, 2018, 40(12):37-41. [8] RAGHAVAN A C, CESNIK C. Review of guided-wave structural health monitoring[J]. Shock & Vibration Digest, 2007, 39(2):91-114.
[9] CROXFORD A J, MOLL J, WILCOX P D, et al. Efficient temperature compensation strategies for guided wave structural health monitoring[J]. Ultrasonics, 2010, 50(4):517-528.
[10] 李宇庭, 甘芳吉, 万正军, 等.场指纹法无损监测技术综述[J].仪器仪表学报, 2016, 37(8):1781-1791. [11] KAWAKAM Y, KANAJI H, OKU K. Study on application of field signature method (FSM) to fatigue crack monitoring on steel bridges[J]. Procedia Engineering, 2011, 14:1059-1064.
[12] GAN F, WAN Z, LIAO J, et al. High-accuracy evaluation of pitting corrosion in field signature method[J]. Insight: Non-Destructive Testing & Condition Monitoring, 2014, 56(11):613-616.
[13] 孙志涛, 张延兵.储罐长期腐蚀状态下的声发射监测分析[J].中国特种设备安全, 2016, 32(3):44-48. [14] 范舟, 胡敏, 张坤, 等.声发射在线监测酸性环境下油气管材腐蚀研究综述[J].表面技术, 2019, 48(4):245-252. [15] DE B D, MAYRHOFER E, GRÖSCHL M, et al. Wavelet packet transform for detection of single events in acoustic emission signals[J]. Mechanical Systems and Signal Processing, 2015, 64:441-451.
[16] 孙海. 天然气压气站内腐蚀挂片监测管道内腐蚀[J]. 腐蚀与防护, 2011(3):239-242.
计量
- 文章访问数: 6
- HTML全文浏览量: 1
- PDF下载量: 12
下载:
