钢芯铝绞线磨损微粒特性分析.pdf

2010年1月
润滑与密
第35卷第1期
LUBRICATTON ENGINEERING
Yol.35 No
DOI:10.3969/ I. Issn.0254-0150.2010.01.016
钢芯铝绞线黁损微粒特性分析
赵新泽劳海军高伟
(1.三峡大学机械与材料学院湖北宜昌443002;2.中国水电顾问集团贵阳勘测设计研究院贵州贵阳550081
摘要:在自制导线微风振动模拟试验机上,于8%拉断张力下,对LGJ150/25型钢芯铝绞线完成了3种不同振动周
8次下的微风振动磨损试验。在线夹出口89mn处采集了磨损微粒,利用铁谱仪、扫描电镜和能谐仪对磨粒表面微观形
貌、成分和尺寸进行了分析。结果表明,钢芯铝绞线铝线股的磨损主要为磨料磨损和氧化腐蚀磨损;随着振动周次的增
加,磨粒尺寸迅速减小,几何长短轴比逐渐趋于1,棱角逐渐变得平滑,形成粒度较小,数量较多,且分布均匀的磨损
微粒;在1x10'振动周次下,试验导线的钢芯线发生较为明显的磨损现象。
关键词:钢芯铝绞线;磨损微粒;磨损特性;微风振动
中图分类号:TH117.1文献标识码:A文章编号:0254-0150(2010)1-059
Analysis on the Characteristics of Wear Debris of Aluminum
Conductor Steel Reinforced
Zhao Xinze Lao Haijun Gao Wei
(1. College of Mechanical Material Engineering, China Three Gorges University, Yichang Hubei443002, China
2. Guiyang Hydropower Investigation &Research Institute, CHECC, Guizhou Guiyang 550081, China)
Abstract: The aeolian vibration wear of LGJ 150/25 type aluminum conductor steel reinforced(ACSR)was explore
through self-manufactured conductor line aeolian vibraion imla on er h if rent vibration times under 8%u-
timate tensile strength(UTS). The wear debris at 89 mm export clamp was collected and the surface micro-morphology
composition, and size of wear debris were analyzed by using ferro, scanning ele ron microscope(SEM) and enery
spectrometer. The results show that the wear of aluminum wire strand in ACSR is mainly abrasive wear and oxidation corro
sion wear. With the increase of vibration times, the size of wear debris decreases rapidly, the ratio of geometry major and
minor axis gradually tends to one and the edges and comers gradually become smooth, and then smaller particle size, larger
in number and well distributed wear debris is formed. In 1 x 10 " vibration times steel wire in the test conductor occurs
more obvious phenomena of wear
Keywords: aluminum conductor steel reinforeed; wear debris; wear characteristics; aeolian vibration
钢芯铝绞线是目前高压架空输电线路中最常用的振动磨损机制及其减磨技术等具有一定的价值。
导线,它采用铝线和钢线2种线材分层同轴绞制而1试验方法
成。在风载作用下,由于卡广门( Kaman)旋涡效
试验导线为35kV输电线路中LGJ50/25型钢芯
应,导致架空输电导线经常处于微风振动状态,实铝绞线,其标称截面(mm2)为150/25(铝/钢);
践表明,此时导线夹持区及附近磨损最为严重31。结构根数/直径(m)为:铝,26/2.7,钢,7/2.1
振动导致线股间会出现磨损,磨损不仅导致导线表面计算截面为173.11mm2;外径为17.1mm;计算拉断
损伤,增加电晕放电造成功率损失,严重时还会导致力为54110N;计算质量为601kg/km;铝线中铝成
导线断股,造成重大的经济损失幻。而磨损势必产生分不小于9.7%。
磨损微粒,本文作者利用磨损微粒分析技术对磨损导
试验在自制架空输电导线微风振动模拟试验台上
线产生的磨粒进行分析,对深入研究钢芯铝绞线微风完成。利用相似性原理,确定试验方案如下:
(1)试验装置加载导线的张力为4.33kN,即导
*基金项目:三峡大学研究生科研创新基金资助项目
线计算拉断力(UTS)的8%,试验导线长5.5m,
收稿日期:2009-08-10
施加导线振动为正弦振动,振动频率为40Hz,模拟
作者简介:赵新泽(1964-),男,教授,博士生导师,主要研风速为3.42m/s的。
究方向为摩擦学原理及应用技术.
(2)振动试验时间每次持续40min,每天振动