Fracture analysis of steel anchor of strain clamp on 500kV transmission line

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- Fracture analysis of steel anchor of strain clamp on 500kV transmission line
- Vol. 30, Issue 3, Pages: 14-16(2010)
- 作者机构：
  
  湖南省电力公司试验研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM751
- Published：2010
- 稿件说明：
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[1]刘纯,熊亮,陈红冬,李雪.500kV输电线路耐张线夹钢锚断裂分析[J].湖南电力,2010,30(03):14-16.

LIU Chun, XIONG Liang, CHEN Hong-dong, et al. Fracture analysis of steel anchor of strain clamp on 500kV transmission line[J]. 2010, 30(3): 14-16.
[1]刘纯,熊亮,陈红冬,李雪.500kV输电线路耐张线夹钢锚断裂分析[J].湖南电力,2010,30(03):14-16. DOI：

LIU Chun, XIONG Liang, CHEN Hong-dong, et al. Fracture analysis of steel anchor of strain clamp on 500kV transmission line[J]. 2010, 30(3): 14-16. DOI：

对某500 kV输电线路失效耐张线夹钢锚进行外观检查、尺寸测量、射线检验、力学性能试验、化学元素分析、硬度试验和压接部分结构解剖

结合相关标准规范对试验结果进行分析

指出钢锚和铝套管液压不正确、钢锚的碳元素含量和硬度值偏高是造成断裂事故原因

并提出建议。

Fracture specimen of steel anchor of strain clamp on one 500kV transmission line are carried out visual inspection

dimensional measurement

radiographic testing

mechanical properties testing

chemical element analysis

hardness testing

and structure anatomy on crimping part.Combined with standard specifications

the test results are analyzed and it is pointed out that the improper hydraulic connection between steel anchor and aluminum casing

the extra higher carbon content and hardness of steel anchor are main causes for the rupture accident.Suggestions are also put forward in the end.

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