CN106024172A - 低弧垂型电力传输铝绞线 - Google Patents
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Abstract
本发明公开一种低弧垂型电力传输铝绞线,包括位于中心的受力单元和依次绞合于受力单元外表面的第一铝导电层、第二铝导电层和第三铝导电;所述第一铝导电层由8~10根第一铝单线绞合而成,所述第二铝导电层由14~16根第二铝单线绞合而成,所述第三铝导电层由20~22根第三铝单线绞合而成;所述铝层内且位于若干根碳纤维原丝之间填充有聚酯胶黏填充部;所述聚酯胶黏填充部由第一组分与第二组分按照1:2~4的质量比混合而成,所述第一组分是由下述重量份的原料组成:N‑307不饱和聚酯、丙烯酸丁酯、丙烯酸异辛酯、正丁醇、甲苯、滑石粉、铝粉、碳酸钙、三乙烯四胺。本发明具有良好的耐热、耐寒性、耐酸碱盐介质腐蚀和热稳定性,固定性好,抗滑移性强,防止了由于碳纤维原丝光滑带来的缺陷,确保了受力均匀。
Description
技术领域
本发明涉及一种架空导线,尤其涉及一种低弧垂型电力传输铝绞线。
背景技术
架空电力传输的铝导线是一种性能良好的特种导线,尤其在线路狭窄的地区,只需要更换相近截面规格的导线,基本上不需要更换铁塔即能满足强度和导线对地的要求,但是在应用中随着导线温度的上升,其弧垂必然增加。而原有的杆塔不可能有很大的余度来满足其弧垂的增加量,故要达到在原有走廊上不改变铁塔增容40-50%是有困难的。
另一方面,现有铝导线使用镀锌钢绞线作为受力单元,这种结构使用了一百多年,是传统结构。但镀锌钢绞线强度不高,抗腐蚀性不强,缩短了导线整体使用寿命。80年代,出现铝包钢单线,当时因工艺复杂,难于推广,现在,已经在大跨越线路使用,其抗腐蚀性大大加强,但强度比钢绞线降低。
发明内容
本发明提供一种低弧垂型电力传输铝绞线,此架空电力传输铝导线既保证了铝层内的若干根碳纤维原丝圆整,也避免了后续在使用中铝层的损坏,从而保证了电性能的可靠性,弯曲半径下降至为6倍电缆直径。
为达到上述目的,本发明采用的技术方案是:一种低弧垂型电力传输铝绞线,包括位于中心的受力单元和依次绞合于受力单元外表面的第一铝导电层、第二铝导电层和第三铝导电层,所述受力单元包括位于中心的第一碳纤维单线和绞合于第一碳纤维单线外表面6根第二碳纤维单线,所述第一碳纤维单线和第二碳纤维单线外表面均包覆有铝层,所述铝层的厚度为0.1~0.4mm;
所述第一碳纤维单线和第二碳纤维单线由若干根碳纤维原丝按左右绞合方向绞合而成,所述第一碳纤维单线和第二碳纤维单线的直径为2mm~4mm;
所述第一铝导电层由8~10根第一铝单线绞合而成,所述第二铝导电层由14~16根第二铝单线绞合而成,所述第三铝导电层由20~22根第三铝单线绞合而成;所述铝层内且位于若干根碳纤维原丝之间填充有聚酯胶黏填充部;
所述聚酯胶黏填充部由第一组分与第二组分按照1:2~4的质量比混合而成,所述第一组分是由下述重量份的原料组成:N-307不饱和聚酯100份、丙烯酸丁酯18份、丙烯酸异辛酯26份、正丁醇10份、甲苯8.5份、滑石粉1.5份、铝粉3份、碳酸钙10份、三乙烯四胺0.8份;
所述第二组分由以下重量份的组分组成:
丙烯酸 100份,
甲基丙烯酸甲酯 30~35份,
乙二醇 20~25份,
甲苯二异氰酸酯 10~15份,
二月桂酸二丁基锡 1~2份,
过氧化苯甲酰 0.5~1份,
邻羟基苯甲酸苯酯 0.5~0.8份。
上述技术方案中进一步改进的技术方案如下:
1. 上述方案中,所述第一铝导电层中第一铝单线绞合方向为右向。
2. 上述方案中,所述第二铝导电层中第二铝单线绞合方向为左向。
3. 上述方案中,所述第三铝导电层中第三铝单线绞合方向为右向。
由于上述技术方案运用,本发明与现有技术相比具有下列优点:
1. 本发明低弧垂型电力传输铝绞线,其铝层内若干根碳纤维原丝之间填充有特定配方的聚酯胶黏填充部,既保证了铝层内的若干根碳纤维原丝圆整,也避免了后续在使用中铝层的损坏,从而保证了电性能的可靠性,聚酯胶黏填充剂粘接力强,在若干根碳纤维原丝之间形成了无缝密封结构,具有良好的耐热、耐寒性、耐酸碱盐介质腐蚀和热稳定性,固定性好,抗滑移性强,防止了由于碳纤维原丝光滑带来的缺陷,确保了受力均匀,阻热性能优良。
2. 本发明低弧垂型电力传输铝绞线,避免目前单根碳纤维芯棒直径大,弯曲应力大,要求装盘,施工弯曲直径很大,导致导线展放,接头要求高的缺陷,现有技术频繁出现芯棒压接施工不当造成的隐患,会出现导线掉线,从而导致输电线路停电故障,其铝层内且位于若干根碳纤维原丝之间填充有聚酯胶黏填充部,使绞合的碳纤维丝圆整,也有利于固定绞合节距,保证了长时间保持弯曲直径小的优点;其次,其铝包碳纤维单线直径小、方便用于绞合结构,碳纤维丝采用绞合结构,弯曲性能优良,完全避免碳纤维丝弯曲折断问题,单根碳纤维原丝偶尔断裂不影响铝包碳纤维单线性能,单根铝包碳纤维单线小的缺陷不会较大影响整个铝包碳纤维绞合加强芯受力单元的性能,使输电线路安全系数提高。
3. 本发明低弧垂型电力传输铝绞线,铝包覆层对里面的碳纤维发生很好的包覆紧压作用,里面的一百多根碳纤维原丝采用绞合结绳方式,这样的结构使得单根碳纤维丝断裂接头不太影响碳纤维丝整体性能,拉断力高,延长了线路的使用寿命。
附图说明
附图1为本发明低弧垂型电力传输铝绞线结构示意图;
附图2为附图1中受力单元结构示意图;
附图3为附图1的局部结构示意图。
以上附图中:1、受力单元;2、第一铝导电层;21、第一铝单线;3、第二铝导电层;31、第二铝单线;4、第三铝导电层;41、第三铝单线;5、第一碳纤维单线;6、第二碳纤维单线;7、铝层;8、碳纤维原丝;9、聚酯胶黏填充部。
具体实施方式
下面结合附图及实施例对本发明作进一步描述:
实施例:一种低弧垂型电力传输铝绞线,包括位于中心的受力单元1和依次绞合于受力单元1外表面的第一铝导电层2、第二铝导电层3和第三铝导电层4,所述受力单元1包括位于中心的第一碳纤维单线5和绞合于第一碳纤维单线5外表面6根第二碳纤维单线6,所述第一碳纤维单线5和第二碳纤维单线6外表面均包覆有铝层7,所述铝层7的厚度为0.1~0.4mm;
所述第一碳纤维单线5和第二碳纤维单线6由若干根碳纤维原丝8按左右绞合方向绞合而成,所述第一碳纤维单线5和第二碳纤维单线6的直径为2mm~4mm;
所述第一铝导电层2由8~10根第一铝单线21绞合而成,所述第二铝导电层3由14~16根第二铝单线31绞合而成,所述第三铝导电层4由20~22根第三铝单线41绞合而成;所述铝层7内且位于若干根碳纤维原丝8之间填充有聚酯胶黏填充部9;
所述聚酯胶黏填充部9由第一组分与第二组分按照1:2~4的质量比混合而成,所述第一组分是由下述重量份的原料组成:N-307不饱和聚酯100份、丙烯酸丁酯18份、丙烯酸异辛酯26份、正丁醇10份、甲苯8.5份、滑石粉1.5份、铝粉3份、碳酸钙10份、三乙烯四胺0.8份;
所述第二组分由以下重量份的组分组成:丙烯酸100份、甲基丙烯酸甲酯30份、乙二醇25份、甲苯二异氰酸酯15份、二月桂酸二丁基锡1.5份、过氧化苯甲酰1份、邻羟基苯甲酸苯酯0.5份;
第一组分与第二组分按照1:3的质量比混合而成;
上述第一铝导电层2中第一铝单线21绞合方向为右向,所述第二铝导电层3中第二铝单线31绞合方向为左向,所述第三铝导电层4中第三铝单线41绞合方向为右向。
采用上述低弧垂型电力传输铝绞线时,既保证了铝层内的若干根碳纤维原丝圆整,也避免了后续在使用中铝层的损坏,从而保证了电性能的可靠性,聚酯胶黏填充剂粘接力强,在若干根碳纤维原丝之间形成了无缝密封结构,具有良好的耐热、耐寒性、耐酸碱盐介质腐蚀和热稳定性,固定性好,抗滑移性强,防止了由于碳纤维原丝光滑带来的缺陷,确保了受力均匀,阻热性能优良;避免目前单根碳纤维芯棒直径大,弯曲应力大,要求装盘,施工弯曲直径很大,导致导线展放,接头要求高的缺陷,现有技术频繁出现芯棒压接施工不当隐患而至的导线掉线输电线路停电故障,其铝层内且位于若干根碳纤维原丝之间填充有聚酯胶黏填充部,使绞合的碳纤维丝圆整,也有利于固定绞合节距,保证了长时间保持弯曲直径小的优点;其次,其铝包碳纤维单线直径小、方便用于绞合结构,碳纤维丝采用绞合结构,弯曲性能及其优良,完全避免碳纤维丝弯曲折断问题,单根碳纤维原丝偶尔断裂不影响铝包碳纤维单线性能,单根铝包碳纤维单线小的缺陷不会较大影响整个铝包碳纤维绞合加强芯受力单元的性能,使输电线路安全系数提高;再次,其铝包覆层对里面的碳纤维发生很好的包覆紧压作用,里面的一百多根碳纤维原丝采用绞合结绳方式,这样的结构使得单根碳纤维丝断裂接头不太影响碳纤维丝整体性能,拉断力高,延长了线路的使用寿命。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。
Claims (4)
1.一种低弧垂型电力传输铝绞线,其特征在于:包括位于中心的受力单元(1)和依次绞合于受力单元(1)外表面的第一铝导电层(2)、第二铝导电层(3)和第三铝导电层(4),所述受力单元(1)包括位于中心的第一碳纤维单线(5)和绞合于第一碳纤维单线(5)外表面的6根第二碳纤维单线(6),所述第一碳纤维单线(5)和第二碳纤维单线(6)外表面均包覆有铝层(7),所述铝层(7)的厚度为0.1~0.4mm;
所述第一碳纤维单线(5)和第二碳纤维单线(6)由若干根碳纤维原丝(8)按左右绞合方向绞合而成,所述第一碳纤维单线(5)和第二碳纤维单线(6)的直径为2mm~4mm;
所述第一铝导电层(2)由8~10根第一铝单线(21)绞合而成,所述第二铝导电层(3)由14~16根第二铝单线(31)绞合而成,所述第三铝导电层(4)由20~22根第三铝单线(41)绞合而成;所述铝层(7)内且位于若干根碳纤维原丝(8)之间填充有聚酯胶黏填充部(9);
所述聚酯胶黏填充部(9)由第一组分与第二组分按照1:2~4的质量比混合而成,所述第一组分是由下述重量份的原料组成:N-307不饱和聚酯100份、丙烯酸丁酯18份、丙烯酸异辛酯26份、正丁醇10份、甲苯8.5份、滑石粉1.5份、铝粉3份、碳酸钙10份、三乙烯四胺0.8份;
所述第二组分由以下重量份的组分组成:
丙烯酸 100份,
甲基丙烯酸甲酯 30~35份,
乙二醇 20~25份,
甲苯二异氰酸酯 10~15份,
二月桂酸二丁基锡 1~2份,
过氧化苯甲酰 0.5~1份,
邻羟基苯甲酸苯酯 0.5~0.8份。
2.根据权利要求1所述的低弧垂型电力传输铝绞线,其特征在于:所述第一铝导电层(2)中第一铝单线(21)绞合方向为右向。
3.根据权利要求1所述的低弧垂型电力传输铝绞线,其特征在于:所述第二铝导电层(3)中第二铝单线(31)绞合方向为左向。
4.根据权利要求1所述的低弧垂型电力传输铝绞线,其特征在于:所述第三铝导电层(4)中第三铝单线(41)绞合方向为右向。
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