FEM Simulation and Design for Pipeline Multi-Magnetizer Axial Magnetization Using Yoke Method
-
摘要: 利用有限元方法对局部管道、磁轭法磁化结构及外围空气进行了三维实体建模，通过求解计算，定量分析了线圈安匝数、铁芯截面积以及接触面气隙对管道磁化场的影响；求解了有柱状缺陷和周向缺陷时，缺陷漏磁场的分布情况。研究结果表明：磁化器安匝数越大，铁芯截面积越大，接触面气隙越小，管道磁感应强度越大；磁感应强度在缺陷处出现极值和方向变化。Abstract: The 3D models of partial pipe, magnetization structure of the magnet yoke magnetization method and outer air are built using the finite element method. Through calculation, the effects of coil ampere turns, sectional area of iron core and the air gap of the contact surface to the distribution of magnetic induction field in pipe wall were quantitatively analyzed. When there were columnar defects and interstitial defects, the distribution of the magnetic leakage field was solved. The research results indicate that the more of the ampere turns, the more of the sectional area of iron core and the less of the air gap, the bigger of the magnetic flux density in pipe wall. There is a peak and change of direction in the magnetic induction field of the defects.
-
Keywords:
- Pipe /
- The magnet yoke magnetization method /
- The finite element /
- Magnetization
-
-
[1] 胡浪涛，何辅云.管道漏磁检测磁化系统研究和设计［J］.电子测量与仪器学报,2008,22(6):102-107. [2] 戴光，孙传轩，杨志军，等.管道外壁缺陷多磁化单元磁场数值模拟与参量分析［J］.压力容器,2008,25(11):24-29. [3] 孙燕华，康宜华，石晓鹏.基于单一轴向磁化的钢管高速漏磁检测方法［J］.机械工程学报,2010,46(10):8-13. [4] JANSEN H J M , CAMP P B J, GEERDINK M. Magnetisation as a key parameter of magnetic flux leakage pigs for pipeline inspection［J］. Insight,1994,36(9):672-677. [5] 黄松岭.管道磁化的有限元设计［J］.清华大学学报：自然科学版,2000,40(2):67-69. [6] ATHERTON D L. Stress-shadow magnetic inspection technique for far-side anomalies in steel pipe［J］. NDT International,1983,16(6):145-149. [7] ALTSCHULER E, PIGNOTTI A. Nonlinear model of flow detection in steel pipes by magnetic flux leakage［J］. NDT International,1995,28(1):35-40. [8] 康宜华，武新军，杨叔子.磁性无损检测技术中的磁化技术［J］.无损检测,1999,21(5):206-209. [9] 高廷岩.管外多磁化单元结构优化设计与实验研究［D］.大庆：东北石油大学,2011. [10] 任吉林，林俊明.电磁无损检测［M］.北京：科学出版社,2008.
计量
- 文章访问数: 3
- HTML全文浏览量: 0
- PDF下载量: 2
下载:
