CN107731401A - 一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆 - Google Patents

一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆 Download PDF

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CN107731401A
CN107731401A CN201711143214.4A CN201711143214A CN107731401A CN 107731401 A CN107731401 A CN 107731401A CN 201711143214 A CN201711143214 A CN 201711143214A CN 107731401 A CN107731401 A CN 107731401A
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copper
interference
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pressure power
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蒋军熙
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Jiangsu Kai Da Cable Co Ltd
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    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • 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
    • H01B7/02—Disposition of insulation
    • H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/221—Longitudinally placed metal wires or tapes
    • H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/24—Devices affording localised protection against mechanical force or pressure
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/26—Reduction of losses in sheaths or armouring
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

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  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)

Abstract

本发明公开了一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆，包括三根铜导体，在三根铜导体外共挤交联聚乙烯绝缘管构成绝缘线芯，在绝缘线芯外重叠搭盖绕包铜包钢带屏蔽层，每层重叠搭盖的宽度不小于钢带宽的20%，铜包钢的绕包角度不大于30°；在铜包钢带屏蔽层外设有硅橡胶隔离套，硅橡胶隔离套外设有环保高阻燃无碱玻璃布编织带，在高阻燃无碱玻璃布编织带外设有非磁性钢丝加非磁性钢带金属结构的铠装层，最后在电缆外设有聚氟乙烯外护套。该电缆具有绝缘性能好、损耗低、使用寿命长、抗干扰等特性，并且具有弯曲半径小，易于敷设等优点。

Description

一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆
技术领域
本发明涉及电线电缆领域，具体涉及一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆。
背景技术
在城市内将电缆敷设于地下，不占地面、空间，有利于市容美观；同一地下电缆通道，可以容纳多回线路，输送容量的适应性强；自然条件（如雷电、风雨、盐雾、污秽等）和周围环境对电缆的影响较小，供电可靠性高；电缆隐蔽在地下，对人身比较安全；配合环网柜、分接箱等设备，可进行多线路联络，形成供电网络，运行方式极为灵活，可大大缩减停电次数和停电范围，容易实现配网自动化。目前城市内电缆采用的敷设方式一般主要有直埋敷设、穿管敷设、电缆沟敷设、隧道敷设等方式，直埋敷设方式的是所有地下敷设方式中最经济、施工难度最小、施工进度最快的敷设方式，但这种敷设方式电缆容易被损伤、使用寿命短，直接影响这种敷设方式的可信度。
随着国民经济的迅速增长，城镇用电量的不断增加，人们对电能的依赖性不断提高，通过对目前用电缆结构形式的改进以提高电缆的敷设的施工进度、减少因电缆敷设施工对市民生活带来的不便的时间是本项目开发的最终目的。
发明内容
为了克服现有技术中存在的不足，提供一种绝缘性能好、损耗低、使用寿命长、抗干扰等特***联聚乙烯绝缘中压电力电缆。
为实现上述目的，本发明提供交一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆，包括三根铜导体，在三根铜导体外共挤交联聚乙烯绝缘管构成绝缘线芯，在绝缘线芯外重叠搭盖绕包铜包钢带屏蔽层，每层重叠搭盖的宽度不小于钢带宽的20%，铜包钢的绕包角度不大于30°；在铜包钢带屏蔽层外设有硅橡胶隔离套，硅橡胶隔离套外设有环保高阻燃无碱玻璃布编织带，在高阻燃无碱玻璃布编织带外设有非磁性钢丝加非磁性钢带金属结构的铠装层，最后在电缆外设有聚氟乙烯外护套。
优选地，所述硅橡胶隔离套和环保高阻燃无碱玻璃布编织带之间设有PVC阻水薄膜，还可以起到阻水的作用。
优选地，所述的铜包钢带屏蔽层的铜部分采用纯度大于99.95%的无氧铜，导电率不低于102%，保证了电缆载流能力；铜包钢的钢部分采用奥氏体304号钢，因其为非磁性不锈钢材料，可避免交流电传输时产生的磁带损耗和涡流损耗，并能更好地起到屏蔽电场的作用。
与现有技术相比，本发明的有益效果在于：
1、绝缘采用交联聚乙烯绝缘管，代替了现有的一导体一绝缘的结构，不含增塑剂，不会霉变和滋生细菌，耐热性好，常规工作温度可达95℃，能够经受110℃环境下8000小时，耐压性能好，耐腐蚀性能好，能经受大多数化学药品的腐蚀，隔热效果好，节约能源，能够任意弯曲，不会脆裂，在同等条件下，水流量比金属管大，抗蠕变强度高，可配金属管，可省去连接管件，降低安装成本，加快安装周期，便于维修，交联聚乙烯管的重要特性在于其强度和耐温性能，特别是其蠕变强度，其强度随使用时间的变化不显著，寿命可达50年之久。
2、将设置铜包钢的金属屏蔽层、非磁性钢丝加非磁性钢带金属铠装层等结构形式，以达到很好的抗拉性、抗干扰性、使用寿命长等效果。
3、抗压强度由标准的3000N/m提高到5000N/m, 抗拉能力提高了35%；在电缆敷设时，电缆的牵引速度由15m/min提高到20m/min；绝缘线芯的偏心度由标准规定的不大于15%降低到5%以内。
4、电缆是针对直埋敷设用电缆的存在的缺点进行改进，并增加新的功能特点，使施工速度得到提高，在施工过程和正常运行过程中电缆被损坏的几率降低，并且它还具绝缘性能好、损耗低、使用寿命长、抗干扰等特性，并且具有弯曲半径小，易于敷设等优点。
附图说明
图1为本发明的结构示意图。
具体实施方式
下面结合附图和具体实施例，进一步阐明本发明，应理解这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
如图1所示，本发明提供一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆，包括三根铜导体1，在三根铜导体外共挤交联聚乙烯绝缘管2构成绝缘线芯，在绝缘线芯外重叠搭盖绕包铜包钢带屏蔽层3，每层重叠搭盖的宽度不小于钢带宽的20%，铜包钢的绕包角度不大于30°；在铜包钢带屏蔽层外设有硅橡胶隔离套4，硅橡胶隔离套外设有环保高阻燃无碱玻璃布编织带5，在高阻燃无碱玻璃布编织带外设有非磁性钢丝加非磁性钢带金属结构的铠装层7，最后在电缆外设有聚氟乙烯外护套8。
为了使电缆具有更好的防水性能，所述硅橡胶隔离套和环保高阻燃无碱玻璃布编织带之间设有PVC阻水薄膜6。
所述的铜包钢带屏蔽层的铜部分采用纯度大于99.95%的无氧铜，导电率不低于102%，保证了电缆载流能力；铜包钢的钢部分采用奥氏体304号钢，因其为非磁性不锈钢材料，可避免交流电传输时产生的磁带损耗和涡流损耗，并能更好地起到屏蔽电场的作用。
该电缆是针对直埋敷设用电缆的存在的缺点进行改进，并增加新的功能特点，使施工速度得到提高，在施工过程和正常运行过程中电缆被损坏的几率降低，并且它还具绝缘性能好、损耗低、使用寿命长、抗干扰等特性，并且具有弯曲半径小，易于敷设等优点。势必在城市架空电缆转入地下敷设线路改造的形式下将会给企业带来广阔的发展前景。
以上所述仅是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干变型和改进，这些也应视为属于本发明的保护范围。

Claims (3)

1.一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆，其特征在于：包括三根铜导体，在三根铜导体外共挤交联聚乙烯绝缘管构成绝缘线芯，在绝缘线芯外重叠搭盖绕包铜包钢带屏蔽层，每层重叠搭盖的宽度不小于钢带宽的20%，铜包钢的绕包角度不大于30°；在铜包钢带屏蔽层外设有硅橡胶隔离套，硅橡胶隔离套外设有环保高阻燃无碱玻璃布编织带，在高阻燃无碱玻璃布编织带外设有非磁性钢丝加非磁性钢带金属结构的铠装层，最后在电缆外设有聚氟乙烯外护套。
2.根据权利要求1所述的抗拉抗干扰交联聚乙烯绝缘中压电力电缆，其特征在于：所述硅橡胶隔离套和环保高阻燃无碱玻璃布编织带之间设有PVC阻水薄膜。
3.根据权利要求1所述的抗拉抗干扰交联聚乙烯绝缘中压电力电缆，其特征在于：所述的铜包钢带屏蔽层的铜部分采用纯度大于99.95%的无氧铜。
CN201711143214.4A 2017-11-17 2017-11-17 一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆 Withdrawn CN107731401A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203562116U (zh) * 2013-11-25 2014-04-23 张胜僮 汽车侧滑控制装置
CN103886943A (zh) * 2014-02-27 2014-06-25 安徽华海特种电缆集团有限公司 一种移动场合用抗拉轻型电缆
CN103943264A (zh) * 2014-03-24 2014-07-23 安徽航天电缆集团有限公司 一种环保型耐火防水船用电力电缆
CN205920799U (zh) * 2016-08-30 2017-02-01 四川川都线缆有限公司 一种防火耐高温的电缆
CN207489550U (zh) * 2017-11-17 2018-06-12 江苏凯达电缆有限公司 一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203562116U (zh) * 2013-11-25 2014-04-23 张胜僮 汽车侧滑控制装置
CN103886943A (zh) * 2014-02-27 2014-06-25 安徽华海特种电缆集团有限公司 一种移动场合用抗拉轻型电缆
CN103943264A (zh) * 2014-03-24 2014-07-23 安徽航天电缆集团有限公司 一种环保型耐火防水船用电力电缆
CN205920799U (zh) * 2016-08-30 2017-02-01 四川川都线缆有限公司 一种防火耐高温的电缆
CN207489550U (zh) * 2017-11-17 2018-06-12 江苏凯达电缆有限公司 一种抗拉抗干扰交联聚乙烯绝缘中压电力电缆

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