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铝合金芯铝绞线耐张线夹研制与压接性能分析

DOI: 10.13334/j.0258-8013.pcsee.2015.S.034, PP. 249-254

Keywords: JL1X/LHA1-800/550,耐张线夹,压接性能,金具握力残存率,累加拉断力

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Abstract:

灵州-绍兴特高压直流工程将采用JL1X/LHA1-800/550大截面铝合金芯铝型线绞线,其可降低对杆塔的负荷、提高线路安全性能,并具有线路增容的功能。对于此种导线,国内目前还没有其配套的耐张线夹的相关研究经验,为满足实际工程需要,文中根据此导线的结构特点,设计了两种配套耐张线夹,并完成了两种耐张线夹、多种压缩比方案的比较研究,最终通过试验得到,采用铝合金管作为连接铝合金芯与钢锚的过渡,通过完全压接整根铝合金管,将铝合金芯与钢锚牢固连接,铝绞线采用铝管压接的方式优于直接采用耐张钢锚的钢管压接铝合金芯,铝绞线采用铝管压接的方式。

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