CN106448885A - 一种110kV的电缆 - Google Patents

一种110kV的电缆 Download PDF

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Publication number
CN106448885A
CN106448885A CN201611002789.XA CN201611002789A CN106448885A CN 106448885 A CN106448885 A CN 106448885A CN 201611002789 A CN201611002789 A CN 201611002789A CN 106448885 A CN106448885 A CN 106448885A
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Prior art keywords
cable
layer
greasy
watertight
water
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CN201611002789.XA
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贺达园
侯孝政
贺顺忠
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JIANGSU HUAYUAN CABLE CO Ltd
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JIANGSU HUAYUAN CABLE CO Ltd
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Priority to CN201611002789.XA priority Critical patent/CN106448885A/zh
Publication of CN106448885A publication Critical patent/CN106448885A/zh
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22Metal wires or tapes, e.g. made of steel
    • H01B7/221Longitudinally placed metal wires or tapes
    • H01B7/225Longitudinally placed metal wires or tapes forming part of an outer sheath
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/32Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
    • H01B7/322Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising humidity sensing means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/021Features relating to screening tape per se
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/027Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers

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  • Insulated Conductors (AREA)

Abstract

本发明涉及一种电缆,尤其是一种110kV的电缆,该电缆从内到外依次为分割导体、导体屏蔽层、绝缘层、绝缘屏蔽层、阻水缓冲层、半导电层、皱纹铝层和外护套;所述阻水缓冲层的内圆面设有不少于十个的阻水油膏槽,阻水油膏槽内装有阻水油膏。所述阻水油膏槽内装有感温光纤,所述感温光纤不少于一根。所述外护套从内外依次为沥青防腐层或热熔胶防蚀层、聚乙烯层和导电涂层。本发明提供的一种110kV的电缆机械性能好、弯曲半径小、阻水性能好、能实时监控电缆运行状况。

Description

一种110kV的电缆
技术领域
本发明涉及一种电缆,尤其是一种110kV的电缆。
背景技术
电缆长期的使用过程中,由于潮气和水分的侵蚀,导致传输性能下降,影响正常使用。特别是在南方地区,由于潮湿、多雨、地下水位高,埋地敷设电缆的阻水性显得格外重要,用户越来越需要一种能够防止潮气和水分侵蚀、经久耐用的电缆,以保障电缆的传输性能和正常使用。现有的电力电缆护套层一般采用橡胶绝缘护套,防水性差、机械性能低。
传统的电力电缆线路缺乏对电缆运行系统有效的在线监测手段,电缆一旦敷设运行,就处于无监管或监管不及时状态,直到电缆故障出现后才去关注,导致电网的电缆平均故障率偏高,从安全角度出发,迫切需要采取措施监视电缆的运行状态和老化程度,避免事故的发生,保障电网中电缆的运行安全。另外,由于电缆的负载能力都是理论上计算出来的,有着较大的余度,存在着一定的浪费,从经济角度出发,迫切需要采取措施以保证在不超过电缆允许温度的情况下,最大地发挥电缆的传输能力,以获得较大的经济效益。
发明内容
为解决上述问题,本发明提供一种防水性能好、能监控电缆的一种110kV的电缆,具体技术方案为:
一种110kV的电缆,该电缆从内到外依次为分割导体、导体屏蔽层、绝缘层、绝缘屏蔽层、阻水缓冲层、半导电层、皱纹铝层和外护套;所述阻水缓冲层的内圆面设有不少于十个的阻水油膏槽,阻水油膏槽内装有阻水油膏。
所述阻水油膏槽内装有感温光纤,所述感温光纤不少于一根。
所述外护套从内到外依次为沥青防腐层或热熔胶防蚀层、聚乙烯层和导电涂层。
现有电缆由于要求高阻水,阻水膨胀带中大多是使用阻水粉,而阻水粉依赖国外进口,价格高,导致生产成本高。通过增加设有阻水油膏槽的阻水缓冲层来容纳阻水油膏,降低生产成本。阻水油膏槽容纳阻水油膏槽,阻水油膏槽能渗到阻水缓冲层与绝缘屏蔽层之间,形成阻水油膏保护层,阻水效果好。
阻水油膏槽内装有感温光纤,感温光纤最少一根,也可采用两根或四根,采用多根时对称布置。通过感温光纤对电缆本体运行过程的温度变化情况进行信号反馈,监控电缆本体的运行状态和电缆绝缘层的老化程度,实时监测电缆的温度变化,避免由于电缆过热引起事故的发生,保证电网中电缆的安全运行。同时通过感温光纤可以测量电缆的运行温度,在电缆允许运行温度的范围内,提高电缆的载流量,最大的发挥电缆的传输能力,降低电缆电能传输成本。还可以把相关信息及时传送到信息控制中心,以实现联动控制。最大限度地提高高压和超高压交联电缆的安全性、可靠性和经济性。
阻水缓冲层还能缓冲电缆的热膨胀。
皱纹铝层由防腐铝带无缝焊接而成,皱纹铝层能提高抗压性能,保证电缆在受外力作用时,使电缆绝缘免于损害。同时增强防水性能,电力电缆在水沟等有水环境中运行时,起到径向防水功能。在电缆发生故障,产生单相短路时,起到过电流的作用。
导体屏蔽层、绝缘层和绝缘屏蔽层为三层共挤结构。
本发明提供的一种110kV的电缆机械性能好、弯曲半径小、阻水性能好、能实时监控电缆运行状况。
附图说明
图1是本发明的截面结构示意图。
具体实施方式
现结合附图说明本发明的具体实施方式。
如图1所示,一种110kV的电缆,该电缆从内到外依次为分割导体1、导体屏蔽层21、绝缘层22、绝缘屏蔽层23、阻水缓冲层3、半导电层4、皱纹铝层5和外护套;阻水缓冲层3的内圆面设有18个的阻水油膏槽31,阻水油膏槽31内装有阻水油膏。
阻水油膏槽31内装有感温光纤7,感温光纤7有2根,对称布置。
外护套从内到外依次为沥青防腐层或热熔胶防蚀层61、聚乙烯层62和导电涂层63。
本发明提供的一种110kV的电缆采用5分法工艺生产,具体步骤为:
1、采用分割导体工艺加工该电缆的分割导体1,分割导体1的截面积为1600mm2,分割导体1用缠绕设备各绕包一层尼龙带、特多龙带以及聚酯带,交联工序时拆除,保护分割导体1表面无灰尘。
2、采用三层共挤方式将导体屏蔽层21、绝缘层22、绝缘屏蔽层23同时挤出。
3、挤出阻水缓冲层3,同时加注阻水油膏31并布置感温光纤7;然后绕包半导电层4。
4、绕包皱纹铝层5,采用纯度不小于99.6%的扎纹防腐铝带,通过氩弧焊机进行无缝焊接。
5、制造外护套,先在皱纹铝层5表面加工沥青防腐层或热熔胶防蚀层61,然后进行聚乙烯层62加工,最后涂覆石墨做导电涂层63。
本发明提供的电缆结构和制造方法不仅适用110kV的电缆,同样适用其他高压和超高压电缆的结构和制造方法。

Claims (3)

1.一种110kV的电缆,其特征在于,该电缆从内到外依次为分割导体(1)、导体屏蔽层(21)、绝缘层(22)、绝缘屏蔽层(23)、阻水缓冲层(3)、半导电层(4)、皱纹铝层(5)和外护套;所述阻水缓冲层(3)的内圆面设有不少于十个的阻水油膏槽(31),阻水油膏槽(31)内装有阻水油膏。
2.根据权利要求1所述的一种110kV的电缆,其特征在于,所述阻水油膏槽(31)内装有感温光纤(7),所述感温光纤(7)不少于一根。
3.根据权利要求1或2所述的一种110kV的电缆,其特征在于,所述外护套从内到外依次为沥青防腐层或热熔胶防蚀层(61)、聚乙烯层(62)和导电涂层(63)。
CN201611002789.XA 2016-11-15 2016-11-15 一种110kV的电缆 Pending CN106448885A (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11231182A (ja) * 1998-02-19 1999-08-27 Sumitomo Electric Ind Ltd テープ心線型光ケーブルおよびその製造方法
CN201717052U (zh) * 2010-03-02 2011-01-19 上海欧忆电子科技发展有限公司 单相电光纤嵌入式电力电缆
CN103198894A (zh) * 2012-01-04 2013-07-10 扬州曙光电缆有限公司 750kv超高压交联聚乙烯绝缘电力电缆
CN205406184U (zh) * 2016-02-19 2016-07-27 国家电网公司 一种通讯电缆

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11231182A (ja) * 1998-02-19 1999-08-27 Sumitomo Electric Ind Ltd テープ心線型光ケーブルおよびその製造方法
CN201717052U (zh) * 2010-03-02 2011-01-19 上海欧忆电子科技发展有限公司 单相电光纤嵌入式电力电缆
CN103198894A (zh) * 2012-01-04 2013-07-10 扬州曙光电缆有限公司 750kv超高压交联聚乙烯绝缘电力电缆
CN205406184U (zh) * 2016-02-19 2016-07-27 国家电网公司 一种通讯电缆

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Application publication date: 20170222