CN114141422A - 变压器连接用特种结构环保型电力电缆 - Google Patents
变压器连接用特种结构环保型电力电缆 Download PDFInfo
- Publication number
- CN114141422A CN114141422A CN202010916597.XA CN202010916597A CN114141422A CN 114141422 A CN114141422 A CN 114141422A CN 202010916597 A CN202010916597 A CN 202010916597A CN 114141422 A CN114141422 A CN 114141422A
- Authority
- CN
- China
- Prior art keywords
- environment
- friendly
- cable
- layer
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 15
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 15
- 229920000098 polyolefin Polymers 0.000 claims abstract description 8
- 229920000271 Kevlar® Polymers 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 239000004761 kevlar Substances 0.000 claims abstract description 6
- 239000004698 Polyethylene Substances 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims abstract description 4
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- -1 polyethylene Polymers 0.000 claims abstract description 4
- 229920000573 polyethylene Polymers 0.000 claims abstract description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- 239000003063 flame retardant Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000002500 effect on skin Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229910052736 halogen Inorganic materials 0.000 abstract 2
- 150000002367 halogens Chemical class 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/021—Features relating to screening tape per se
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/022—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/025—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound wire-conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/04—Concentric cables
Landscapes
- Insulated Conductors (AREA)
Abstract
本发明涉及一种变压器连接用特种结构环保型电力电缆,属于电力传输领域,该电缆的主要特点是:由复合结构填充芯、同心导体、XLPE绝缘层、复合屏蔽层和低烟无卤护套组成,所述复合结构填充芯位于电缆的中心位置,同心导体、XLPE绝缘层、复合屏蔽层和低烟无卤护套以此逐层在外。所述复合结构填充芯采用凯夫拉纤维挤包150℃环保聚烯烃料。所述同心导体和复合屏蔽层采用疏绕退火软铜丝和绕包退火软铜带。所述XLPE绝缘层采用环保型可交联聚乙烯绝缘料。所述低烟无卤护套采用90℃环保型聚烯烃料。本发明结构设计合理,具有导体集肤效应降低,有效截面利用率提高,电缆的散热性能提高,屏蔽性能好,阻燃环保等优点。
Description
技术领域
本发明涉及一种电力电缆,具体为一种变压器连接用特种结构无卤低烟阻燃交联聚乙烯绝缘环保型电力电缆,尤其适用于12/20kV及以上的电力电缆。
背景技术
传统变压器连接用中压电力电缆的导体结构都是由紧压圆形的铜导体或者铝导体组成,导体采用分股绞合,然后紧压成型。该工艺导体采用紧压成型,但是由于工艺水平和铜导体本身特性的影响,导体表面总会或多或少的存在毛刺。为了消除这种毛刺对电缆结构的影响,传统工艺在导体表面挤包一层半导电的交联聚乙烯,形成均衡电位,以消除毛刺的影响。传统工艺虽然采用了分股绞合,紧压成型,但是由于导体集肤效应的存在,使得导体界面利用率总体还是偏低。另外由于要挤包半导电交联聚乙烯,造成资源的浪费。
发明内容
发明的目的:本发明的目的是提供一种采用同心导体,非紧压结构,散热性能和屏蔽性能好的无卤低烟阻燃环保型电力电缆。
技术方案:为解决上述问题,本发明采用的技术方案为特种结构的电力电缆,其特点是:由复合结构填充芯、同心导体、XLPE绝缘层、复合屏蔽层和低烟无卤护套组成。
本发明所述的复合结构填充芯采用的材料为:由凯夫拉纤维做加强芯,挤包耐温等级150℃的环保低烟无卤阻燃聚烯烃材料(为适应三层共挤,提高填充芯的耐温等级)。该复合结构填充芯的面积和结构根据不同的电压等级和规格而相应的调整。例如12/20kV的50平方导体,其结构为:10条1000担的凯夫拉纤维绞合后,挤包面积为165mm²的填充芯。
本发明所述的同心导体采用复合结构,其材料为:性能满足最新国家标准GB/T3956-2008《电缆的导体》要求的裸软圆铜线和性能满足最新国家标准GB/T 11091-2005《电缆用铜带》要求的软铜带。裸软圆铜线的直径和根数以及铜带的厚度和宽度根据具体界面而定。例如50mm²的同心导体采用:50根铜线,铜线直径1.4mm,铜带厚度0.1mm,铜带宽度45mm,铜带搭盖率为25%以上。
本发明所述的XLPE绝缘层材料为环保型可交联聚乙烯绝缘料,交联方式为化学交联。挤出方式采用悬链式三层共挤。挤出后采用测试热延伸控制交联度,控制范围为:70%~110% 。XLPE绝缘的厚度根据不同的电压等级和规格做出调整。例如12/20kV的50平方导体,其绝缘厚度为7.0mm(优于国家标准的要求的5.5mm),其主要作用是保证电缆能够承受变压器所产生的瞬间高压电流。
本发明所述的复合屏蔽层采用复合结构,其材料和结构与本发明所述的同心导体相同。其结构根据不同电压等级和规格做出调整,例如12/20kV的50平方导体,其结构为:80根铜线,铜线直径0.9mm。
本发明所述的低烟无卤护套材料采用耐温等级150℃的环保型热塑性低烟无卤阻燃聚烯烃材料。其厚度为挤出前外径乘0.035,然后加1。
本发明同现有技术相比具有以下优点:本发明的导体采用软铜线加铜带的复合结构,不需要紧压,避免因为紧压而产生的导体毛刺。本发明的同心导体疏绕在复合结构的填充芯上,由于导体采用同心结构,大大提高了相同规格导体与绝缘层的接触面积,提高了电缆的的散热效果和载流量。例如:传统的50mm²导体,其圆形截面积为50mm²,而采用本结构,其圆形面积可以达到170mm²的效果。同相同规格的导体来讲,由于同心导体的特殊结构,使得集肤效应大大降低,有效的提高了导体实际截面利用率。屏蔽层采用铜丝疏绕加铜带绕包,与传统的单一铜带绕包相比,增加了电缆屏蔽效果。另外,本发明所采用的材料由内到外均采用环保型材料,材料均满足RoHS2.0的要求。这不仅使得该电缆更加满足客户和市场的需求,同时为企业创造了良好的经济效益。
附图说明
图1为本发明的电缆结构示意图。
具体实施方式
下面结合实例对本发明做进一步的详细说明。
如图1所示,本实施例描述了一种变压器连接用特种结构环保型电力电缆,本电缆的电压等级为12/20kV 标称截面积为50mm²。该变压器连接用特种结构环保型电力电缆,由内到外分别为:复合结构填充芯1,同心导体2,XLPE绝缘层3,复合屏蔽层4,低烟无卤护套5。所述填充芯位于电缆的中心位置,同心导体、XLPE绝缘层、复合屏蔽层和低烟无卤护套以此逐层在外。其中复合结构填充芯1采用10条1000担的凯夫拉纤维挤包耐温等级105℃的环保低烟无卤阻燃聚烯烃材料,挤包外径为14.5mm。同心导体2采用50根单丝直径为1.4mm的退火软圆铜线,铜带厚度0.1mm,铜带宽度45mm,铜带搭盖率为25%,该结构的整体电阻要求小于0.387Ω/km。XLPE绝缘层3采用环保型可交联聚乙烯绝缘料。复合屏蔽层4采用80根铜丝直径为0.9mm的退火软铜线。护套材料采用耐温等级90℃的环保型热塑性低烟无卤阻燃聚烯烃材料,厚度为2.5mm。
对于本领域技术人员来说,凡是依据本发明构思所描述的构造和特征所做的等效或者简单变化(例如改变填充芯的材料或者外径大小等),均包含在本发明的保护范围内。
Claims (4)
1.一种变压器连接用特种结构环保型电力电缆,其特点是:由复合结构填充芯、同心导体、XLPE绝缘层、复合屏蔽层和低烟无卤护套组成;所述复合结构填充芯位于电缆的中心位置,同心导体、XLPE绝缘层、复合屏蔽层和低烟无卤护套以此逐层在外。
2.根据权利要求1所述,其特征是:所述的复合结构填充芯由凯夫拉纤维做加强芯,挤包耐温等级105℃的环保低烟无卤阻燃聚烯烃材料组成。
3.根据权利要求1所述,其特征是:所述的同心导体和复合屏蔽层是由退火的软圆铜线疏绕在复合结构填充芯,然后绕包退火软铜带组成。
4.根据权利要求1所述,其特征是:XLPE绝缘层采用环保型可交联聚乙烯绝缘料,低烟无卤护套采用耐温等级90℃的环保型热塑性低烟无卤阻燃聚烯烃材料。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010916597.XA CN114141422A (zh) | 2020-09-03 | 2020-09-03 | 变压器连接用特种结构环保型电力电缆 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010916597.XA CN114141422A (zh) | 2020-09-03 | 2020-09-03 | 变压器连接用特种结构环保型电力电缆 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114141422A true CN114141422A (zh) | 2022-03-04 |
Family
ID=80438306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010916597.XA Pending CN114141422A (zh) | 2020-09-03 | 2020-09-03 | 变压器连接用特种结构环保型电力电缆 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114141422A (zh) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2332005A1 (en) * | 2000-01-12 | 2001-07-12 | Southwire Company | Electrical cable having a self-sealing agent and method for preventing water from contacting the conductor |
CN101587761A (zh) * | 2008-05-21 | 2009-11-25 | 上海电缆厂十分厂 | 耐候性太阳能光伏电缆及制造方法 |
CN203276947U (zh) * | 2013-04-11 | 2013-11-06 | 安徽海纳电缆集团有限公司 | 环保型低烟无卤阻燃耐火中压电力电缆 |
CN103714902A (zh) * | 2014-01-14 | 2014-04-09 | 深圳市东佳信电线电缆有限公司 | 变压器连接用特种结构环保型电力电缆 |
JP2018088364A (ja) * | 2016-11-29 | 2018-06-07 | タツタ電線株式会社 | 耐水性難燃ノンハロゲンシース高圧ケーブル |
-
2020
- 2020-09-03 CN CN202010916597.XA patent/CN114141422A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2332005A1 (en) * | 2000-01-12 | 2001-07-12 | Southwire Company | Electrical cable having a self-sealing agent and method for preventing water from contacting the conductor |
CN101587761A (zh) * | 2008-05-21 | 2009-11-25 | 上海电缆厂十分厂 | 耐候性太阳能光伏电缆及制造方法 |
CN203276947U (zh) * | 2013-04-11 | 2013-11-06 | 安徽海纳电缆集团有限公司 | 环保型低烟无卤阻燃耐火中压电力电缆 |
CN103714902A (zh) * | 2014-01-14 | 2014-04-09 | 深圳市东佳信电线电缆有限公司 | 变压器连接用特种结构环保型电力电缆 |
JP2018088364A (ja) * | 2016-11-29 | 2018-06-07 | タツタ電線株式会社 | 耐水性難燃ノンハロゲンシース高圧ケーブル |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101071658A (zh) | 防水电力电缆及制作方法 | |
CN112635121A (zh) | 同心式光纤复合导线电缆及其制备工艺 | |
CN108417301B (zh) | 一种中压抗水树交联聚乙烯绝缘电力电缆及生产工艺 | |
CN112420267A (zh) | 电缆 | |
CN202887839U (zh) | 无卤低烟阻燃中压变频器电缆 | |
CN210429344U (zh) | 磁悬浮专用长定子电缆 | |
CN112489873A (zh) | 一种异形导体聚丙烯绝缘电力电缆及其加工方法 | |
CN216353543U (zh) | 抗老化耐压电力电缆 | |
CN114141422A (zh) | 变压器连接用特种结构环保型电力电缆 | |
CN211980236U (zh) | 一种环保绝缘型电源线缆 | |
CN202615913U (zh) | 一种漆包铜线芯舰船用电力电缆 | |
CN214956123U (zh) | 一种中压防水电力电缆 | |
CN112017819A (zh) | 一种电气接触性阻水型高压电力电缆 | |
CN220895243U (zh) | 一种高性能中压电力电缆 | |
CN216388864U (zh) | 一种中压聚丙烯绝缘电力电缆 | |
CN212934252U (zh) | 一种移动用橡胶绝缘同心导体电缆 | |
CN221632272U (zh) | 一种10kV变压器引下线用防干扰架空绝缘电缆 | |
CN216250059U (zh) | 一种高压直流输电系统金属回流线缆 | |
CN212541999U (zh) | 一种同轴防水电力电缆 | |
CN219534085U (zh) | 一种高强度阻燃环保架空绝缘电缆 | |
CN220340955U (zh) | 一种阻水型低压电力电缆 | |
CN210925520U (zh) | 一种加强型平管铝护套铜芯防水电缆 | |
CN216487467U (zh) | 非铠装型中高压复合屏蔽电缆 | |
CN220020639U (zh) | 一种接地铜导体三芯中压电力电缆 | |
CN210073353U (zh) | 一种交联聚乙烯绝缘无卤低烟阻燃电缆 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220304 |
|
WD01 | Invention patent application deemed withdrawn after publication |