CN107221380A - 一种安全耐用型地下电缆 - Google Patents

一种安全耐用型地下电缆 Download PDF

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CN107221380A
CN107221380A CN201710343529.7A CN201710343529A CN107221380A CN 107221380 A CN107221380 A CN 107221380A CN 201710343529 A CN201710343529 A CN 201710343529A CN 107221380 A CN107221380 A CN 107221380A
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layer
protective case
cable
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durable type
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吴善同
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Chengdu Xinsan Electric Wire Factory
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Chengdu Xinsan Electric Wire Factory
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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
    • H01B3/441—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 alkenes
    • 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
    • H01B7/184—Sheaths comprising grooves, ribs or other projections
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable 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
    • H01B7/29—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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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

本发明公开了一种安全耐用型地下电缆，包括线芯和保护套，所述保护套材质为聚碳酸酯，在保护套外周均匀设有数条沿电缆轴向延伸的加强肋，所述保护套内侧设有一层耐火层，耐火层内设有防水层，防水层内设有加强层，加强层与线芯间设有隔热层，在保护套外还覆着一层防蛀层，所述防蛀层内填充有防虫剂微粒。其强度高，能够有效避免在抵抗外力作用时出现破损或断裂，并且能够有效防止虫蛀，提高电缆的使用寿命。

Description

一种安全耐用型地下电缆
技术领域
本发明涉及一种电缆，具体涉及一种安全耐用型地下电缆。
背景技术
电缆是由一根或多根相互绝缘的导体外包绝缘层和保护层制成，用于将电力或信息从一处传递到另一处的导线。预埋电缆和常见的架空线相比，因其常埋于地下，故又称地下电缆。不同于高架高压线路，电缆常铺设于电缆沟、隧道、管道或室内，进入现代社会后，由于城市用地紧张，交通压力大，市容建设等原因，大城市普遍采用地下电缆输电方式，相对于架空线，预埋电缆具有占地小、输电可靠、抗干扰能力强等优点。
由于地下电缆深埋于地表以下，需要承受来自地面的压力甚至由于地壳运动而产生的来自地表内部的应力，现有的电缆通常由导体、绝缘层和保护套制成，其结构简单功能单一，难以应对过高的应力，因此当来自地表的压力骤然增大，或者由于地壳运动如地震而导致的地面表层内的应力过大时，电缆往往出现破损甚至断裂，严重影响电能或信息的有效传输，造成难以估量的经济损失。且电缆预埋于地下，在长期使用过程中会受到化学腐蚀、虫蛀的破坏，长此以往会缩短电缆的使用寿命。
发明内容
为了解决上述技术问题，本发明公开一种安全耐用型地下电缆，其强度高，能够有效避免在抵抗外力作用时出现破损或断裂，并且能够有效防止虫蛀，提高电缆的使用寿命。
本发明通过下述技术方案实现：
一种安全耐用型地下电缆，包括线芯和保护套，所述保护套材质为聚碳酸酯，在保护套外周均匀设有数条沿电缆轴向延伸的加强肋，所述保护套内侧设有一层耐火层，耐火层内设有防水层，防水层内设有加强层，加强层与线芯间设有隔热层，在保护套外还覆着一层防蛀层，所述防蛀层内填充有防虫剂微粒。
本发明中，采用聚碳酸酯材质的保护套，具有高强度和优良的耐腐蚀性，且在保护套内设置的加强层进一步提高了电缆的强度，提升电缆的抗拉伸抗弯折性能，耐火层和隔热层的设置能够有效提高电缆的耐高温性能，避免外界高温向内传导，引起线芯受热变形或熔断，提升电缆的耐用性，防水层用于防止地下水侵蚀电缆，本发明还设置防蛀层，用于防止地下昆虫啃噬电缆，提高电缆使用寿命。
所述加强肋为3条，且加强肋高度为保护套外径的2倍。
电缆埋入地下后，加强肋嵌入电缆外周的土壤中，利于固定电缆在土壤中的相对位置，避免电缆受到外力作用后在土壤中的位置发生偏离进而导致弯折，进一步提高电缆的强度和耐用性。
所述耐火层为耐火云母带，所述防水层材质为阻水带。
所述加强层具体为钢管，所述隔热层具体为隔热棉。
钢管相对于铜管而言，具有更高的机械强度，有效提高电缆的强度。
所述线芯包括内衬和内衬内的导线，所述导线为3条。
本发明与现有技术相比，具有如下的优点和有益效果：
本发明一种安全耐用型地下电缆，采用聚碳酸酯材质的保护套，具有高强度和优良的耐腐蚀性，且在保护套内设置的加强层进一步提高了电缆的强度，提升电缆的抗拉伸抗弯折性能，耐火层和隔热层的设置能够有效提高电缆的耐高温性能，避免外界高温向内传导，引起线芯受热变形或熔断，提升电缆的耐用性，防水层用于防止地下水侵蚀电缆，本发明还设置防蛀层，用于防止地下昆虫啃噬电缆，提高电缆使用寿命。
附图说明
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，并不构成对本发明实施例的限定。在附图中：
图1为本发明横截面示意图；
附图中标记及对应的零部件名称：
1-线芯，11-内衬，12-导线，2-保护套，3-加强肋，4-耐火层，5-防水层，6-加强层，7-隔热层，8-防蛀层。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白，下面结合实施例和附图，对本发明作进一步的详细说明，本发明的示意性实施方式及其说明仅用于解释本发明，并不作为对本发明的限定。
实施例
如图1所示，本发明一种安全耐用型地下电缆，包括线芯1和保护套2，所述保护套2材质为聚碳酸酯，在保护套2外周均匀设有数条沿电缆轴向延伸的加强肋3，所述保护套2内侧设有一层耐火层4，耐火层4内设有防水层5，防水层5内设有加强层6，加强层6与线芯1间设有隔热层7，在保护套2外还覆着一层防蛀层8，所述防蛀层8内填充有防虫剂微粒。
所述加强肋3为3条，且加强肋3高度为保护套2外径的2倍。
所述耐火层4为耐火云母带，所述防水层5材质为阻水带。
所述加强层6具体为钢管，所述隔热层7具体为隔热棉。
所述线芯1包括内衬11和内衬11内的导线12，所述导线12为3条。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (5)

1.一种安全耐用型地下电缆，包括线芯和保护套，其特征在于，所述保护套材质为聚碳酸酯，在保护套外周均匀设有数条沿电缆轴向延伸的加强肋，所述保护套内侧设有一层耐火层，耐火层内设有防水层，防水层内设有加强层，加强层与线芯间设有隔热层，在保护套外还覆着一层防蛀层，所述防蛀层内填充有防虫剂微粒。
2.根据权利要求1所述的一种安全耐用型地下电缆，其特征在于，所述加强肋为3条，且加强肋高度为保护套外径的2倍。
3.根据权利要求1或2所述的一种安全耐用型地下电缆，其特征在于，所述耐火层为耐火云母带，所述防水层材质为阻水带。
4.根据权利要求3所述的一种安全耐用型地下电缆，其特征在于，所述加强层具体为钢管，所述隔热层具体为隔热棉。
5.根据权利要求4所述的一种安全耐用型地下电缆，其特征在于，所述线芯包括内衬和内衬内的导线，所述导线为3条。
CN201710343529.7A 2017-05-16 2017-05-16 一种安全耐用型地下电缆 Pending CN107221380A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112466524A (zh) * 2020-11-30 2021-03-09 韩玉权 一种防水耐压光电复合电缆
US20220003951A1 (en) * 2019-03-27 2022-01-06 Corning Research & Development Corporation Aversive cable with sacrificial lobes

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CN204480701U (zh) * 2015-03-26 2015-07-15 上海南大集团有限公司 一种柔性铠装轨道交通用直流电缆
CN206726811U (zh) * 2017-05-16 2017-12-08 成都新三电线厂 一种防蛀预埋电缆

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CN2678072Y (zh) * 2003-06-27 2005-02-09 特变电工股份有限公司 轻轨地铁用直流电缆
KR20090043198A (ko) * 2007-10-29 2009-05-06 엘에스전선 주식회사 선박용 고강도 발포체 케이블
WO2011013934A3 (ko) * 2009-07-28 2011-04-14 엘에스전선 주식회사 내화 케이블
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CN206726811U (zh) * 2017-05-16 2017-12-08 成都新三电线厂 一种防蛀预埋电缆

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220003951A1 (en) * 2019-03-27 2022-01-06 Corning Research & Development Corporation Aversive cable with sacrificial lobes
US11867961B2 (en) * 2019-03-27 2024-01-09 Corning Research & Development Corporation Aversive cable with sacrificial lobes
CN112466524A (zh) * 2020-11-30 2021-03-09 韩玉权 一种防水耐压光电复合电缆

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Application publication date: 20170929