抽油杆涡流检测装置利用涡流探伤原理 ,对抽油杆杆体表面的横向裂纹等缺陷进行在线检测 ,避免或减少抽油杆在井下工作中发生断裂事故 ,对保证抽油机井正常生产起着积极的作用。现文简要介绍该装置的工作原理及特点。现场应用表明 ,该装置适合在井口特殊环境下 ,对抽油杆杆体表面进行无损探伤 The eddy current testing device of sucker rod detects the defects such as transverse cracks on rod surface of sucker rod on-line by the principle of eddy current testing to avoid or reduce the fracture accident of sucker rod in underground work and plays a positive role in ensuring the normal production of sucker rod well Role. This article briefly describes the working principle of the device and features. Field application shows that the device is suitable for non-destructive testing of sucker rod body surface under special environment of well head