X射线检测在耐张线夹压接质量检测中的应用

Application of X-ray in Tension Clamp Compression Quality Inspection

作为输电线路的关键连接部件,耐张线夹的压接质量对确保电力传输可靠性和稳定性至关重要。受人员技能水平、耐张管画线误差、压接设备定位精度等因素影响,耐张线夹因压接质量问题发生断裂的情况时有发生,严重威胁输电线路的安全稳定运行。对某220 kV输电线路8基跨越高速杆塔的96个耐张线夹的压接质量进行X射线检测,发现2个耐张线夹存在凹槽压接不到位缺陷,结合相关标准要求,对这2个耐张线夹提出了补压的建议。根据耐张线夹压接质量现状,对在建和在运工程的耐张线夹质量分别提出了相应的改进建议,以提升输电线路“三跨”区段的本质安全水平。

As a critical component of transmission lines,the compression quality of tension clamps is crucial for the reliability and stability of power transmission.Influenced by factors such as personnel skill levels,errors in tension pipe marking,and precision of compression equipment positioning,tension clamps often experience fractures due to compression quality issues,posing serious threats to the safe and stable operation of transmission lines.This paper conducts compression quality testing on 96 tension clamps of an 220 kV transmission line spanning 8 high-speed poles,using X-ray detection technology.It is discovered that 2 tension clamps have groove compressions that are not properly positioned.In conjunction with relevant standards requirements,recommendations for re-compression are proposed for these 2 tension clamps with improperly positioned groove compressions.Based on the current status of compression quality of tension clamps,corresponding improvement suggestions are provided for tension clamp quality in construction and operational projects,aiming to enhance the intrinsic safety level of"three-span"sections of transmission lines.