CN106504825A - 一种浅海用防水抗拉高压电力电缆 - Google Patents

一种浅海用防水抗拉高压电力电缆 Download PDF

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CN106504825A
CN106504825A CN201611266628.1A CN201611266628A CN106504825A CN 106504825 A CN106504825 A CN 106504825A CN 201611266628 A CN201611266628 A CN 201611266628A CN 106504825 A CN106504825 A CN 106504825A
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cable
density polyethylene
fan
ground wire
extruded
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苏艳文
王琴
高天磊
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Wuxi Jiangnan Cable Co Ltd
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Wuxi Jiangnan 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
    • 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
    • H01B7/14—Submarine cables
    • 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
    • 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
    • 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
    • H01B7/2806—Protection against damage caused by corrosion
    • 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
    • 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
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • 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
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
    • 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

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  • Insulated Conductors (AREA)

Abstract

本发明公开了一种浅海用防水抗拉高压电力电缆，包括缆芯，该缆芯由中心一根圆形地线以及围绕在圆形地线外的四根扇形相线芯绞合而成；在圆形地线与四根扇形相线芯绞合成缆的空隙处填充阻水纱；在缆芯外绕包包带，在包带外先挤包低密度聚乙烯内护套，再紧密缠绕粗钢丝铠装层；在粗钢丝铠装层挤包中密度聚乙烯隔离套，在中密度聚乙烯隔离套外重叠绕包阻水带，在阻水带外焊接皱纹铝护套，并在皱纹铝护套上涂覆沥青，最后在电缆最外层挤包中密度聚乙烯外护套。本发明具有结构稳定，集肤效应低，载流量大、阻水性能好、耐腐蚀、耐氧化等特点，广泛应用于大陆与岛屿、岛屿与岛屿之间以及穿越江河湖底的电力传输。

Description

一种浅海用防水抗拉高压电力电缆
技术领域
本发明涉及电缆领域，具体是一种浅海用防水抗拉高压电力电缆。
背景技术
我国海上有丰富的风能资源和广阔平坦的区域，而且距离电力负荷中心很近，使得近海风力发电技术成为近来研究和应用的热点。由于海底自然环境恶劣及其不可预见性，海上风电用海底电缆是设计技术、制造技术难度较大的电缆品种。浅海电缆不仅要求防水、耐腐蚀、抗机械牵拉及外力碰撞等特殊性能，还要求较高的电气绝缘性能和很高的安全可靠性，特别是大长度海缆更是对目前电缆行业的制造能力和技术水平提出了极大挑战。浅海用电缆广泛应用于大陆与岛屿、岛屿与岛屿之间以及穿越江河湖底的电力传输。随着自动化及我国海洋事业的快速发展，未来的数十年内，无论是海上风力发电，还是其他近海作业系统，都将对浅海电缆呈现出巨大的需求。由于浅海海底应用的特殊环境，需要电缆具有不同的导电截面、不同的机械强度、防海水渗漏与腐蚀等结构特性，并采用适应潮间带、潮下带等不同的施工方法，以满足风电产业的特殊需求。
发明内容
本发明为了解决现有技术中存在的问题，提供了一种载流量大、阻水性能好、耐腐蚀、耐氧化、机械强度大的高压浅海用防水抗拉电力电缆。
本发明所述的一种浅海用防水抗拉高压电力电缆，包括缆芯，该缆芯由中心一根圆形地线以及围绕在圆形地线外的四根扇形相线芯绞合而成；在圆形地线与四根扇形相线芯绞合成缆的空隙处填充阻水纱；在缆芯外绕包包带，在包带外先挤包低密度聚乙烯内护套，再紧密缠绕粗钢丝铠装层；在粗钢丝铠装层挤包中密度聚乙烯隔离套，在中密度聚乙烯隔离套外重叠绕包阻水带，在阻水带外焊接皱纹铝护套，并在皱纹铝护套上涂覆沥青，最后在电缆最外层挤包中密度聚乙烯外护套。
进一步改进，所述扇形相线芯由紧压绞合扇形铜导体以及挤包在紧压绞合扇形铜导体外的交联聚乙烯绝缘层构成。
进一步改进，所述的圆形地线由地线导体以及挤包在地线导体外的屏蔽层构成。
与现有技术相比，本发明的有益效果在于：
1、本发明采用氩弧焊接皱纹铝作为径向阻水结构，更好的保障了气密性和电缆弯曲性能，采用阻水膨胀带作为纵向阻水结构，结合皱纹铝护套，双重保障了电缆的阻水性能。
2、本发明重叠绕包阻水带，使得导体具有很强的阻水功能，不会因为水分浸入造成导体的氧化、腐蚀，从而影响电缆的电性能，甚至发生异常断线事故；中密度聚乙烯隔离套、外护套，保护电缆的同时，也起到了进一步防水作用。
3、粗钢丝、氩弧焊接皱纹铝还能够起到较好的抗拉作用，具有较强的外力碰撞功能。
4、地线设置在电缆最中心，外面设有形状大小相同的扇形线芯，通过将大截面扇形线芯化整为零，将原来的线芯截面均匀分割成四个相互隔离的股块，从而将“集肤效应”和“临近效应”的不利影响降到最低限度，大大提高了电缆的传输容量。
附图说明
图1为本发明的结构示意图。
具体实施方式
下面结合附图对本发明作进一步说明。
如图1所示的一种浅海用防水抗拉高压电力电缆，包括缆芯，该缆芯由中心一根一根圆形地线以及围绕在圆形地线外的四根扇形相线芯绞合而成；其中，所述扇形相线芯由紧压绞合扇形铜导体1以及挤包在紧压绞合扇形铜导体外的交联聚乙烯绝缘层2构成；圆形地线由地线导体3以及挤包在地线导体外的屏蔽层4构成；在圆形地线与四根扇形相线芯绞合成缆的空隙处填充阻水纱5；在缆芯外绕包包带6，在包带外先挤包低密度聚乙烯内护套7，再紧密缠绕粗钢丝铠装层8；在粗钢丝铠装层挤包中密度聚乙烯隔离套9，在中密度聚乙烯隔离套外重叠绕包阻水带10，在阻水带外焊接皱纹铝护套11，并在皱纹铝护套上涂覆沥青12，最后在电缆最外层挤包中密度聚乙烯外护套13。此电缆广泛应用于大陆与岛屿、岛屿与岛屿之间以及穿越江河湖底的高压电力传输。
本发明具体应用途径很多，以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以作出若干改进，这些改进也应视为本发明的保护范围。

Claims (3)

1.一种浅海用防水抗拉高压电力电缆，其特征在于：包括缆芯，该缆芯由中心一根圆形地线以及围绕在圆形地线外的四根扇形相线芯绞合而成；在圆形地线与四根扇形相线芯绞合成缆的空隙处填充阻水纱；在缆芯外绕包包带，在包带外先挤包低密度聚乙烯内护套，再紧密缠绕粗钢丝铠装层；在粗钢丝铠装层挤包中密度聚乙烯隔离套，在中密度聚乙烯隔离套外重叠绕包阻水带，在阻水带外焊接皱纹铝护套，并在皱纹铝护套上涂覆沥青，最后在电缆最外层挤包中密度聚乙烯外护套。
2.根据权利要求1所述的浅海用防水抗拉高压电力电缆，其特征在于：所述扇形相线芯由紧压绞合扇形铜导体以及挤包在紧压绞合扇形铜导体外的交联聚乙烯绝缘层构成。
3.根据权利要求1所述的浅海用防水抗拉高压电力电缆，其特征在于：所述的圆形地线由地线导体以及挤包在地线导体外的屏蔽层构成。
CN201611266628.1A 2016-12-31 2016-12-31 一种浅海用防水抗拉高压电力电缆 Pending CN106504825A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134306A (zh) * 2017-06-13 2017-09-05 中天科技海缆有限公司 一种全阻水电力电缆
CN113488243A (zh) * 2021-06-04 2021-10-08 安徽凌宇电缆科技有限公司 一种抗压、防水、耐腐蚀海底电缆

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US4745238A (en) * 1984-12-22 1988-05-17 Kabelwerke Reinshagen Gmbh Floatable flexible electric and/or optical line
EP1998339A2 (en) * 2007-05-31 2008-12-03 Tratos Cavi S.p.A. Cord for electrical lines
CN202662368U (zh) * 2012-04-21 2013-01-09 安徽超越电缆科技有限公司 氟塑料绝缘耐高温电力电缆
CN203871047U (zh) * 2014-04-23 2014-10-08 沈阳沈缆四环电缆制造有限公司 低压防水防油电缆
CN205542048U (zh) * 2016-04-08 2016-08-31 江苏凯达电缆有限公司 一种浅海湖泊敷设用轻型交联聚乙烯绝缘电力电缆

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745238A (en) * 1984-12-22 1988-05-17 Kabelwerke Reinshagen Gmbh Floatable flexible electric and/or optical line
EP1998339A2 (en) * 2007-05-31 2008-12-03 Tratos Cavi S.p.A. Cord for electrical lines
CN202662368U (zh) * 2012-04-21 2013-01-09 安徽超越电缆科技有限公司 氟塑料绝缘耐高温电力电缆
CN203871047U (zh) * 2014-04-23 2014-10-08 沈阳沈缆四环电缆制造有限公司 低压防水防油电缆
CN205542048U (zh) * 2016-04-08 2016-08-31 江苏凯达电缆有限公司 一种浅海湖泊敷设用轻型交联聚乙烯绝缘电力电缆

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134306A (zh) * 2017-06-13 2017-09-05 中天科技海缆有限公司 一种全阻水电力电缆
CN113488243A (zh) * 2021-06-04 2021-10-08 安徽凌宇电缆科技有限公司 一种抗压、防水、耐腐蚀海底电缆
CN113488243B (zh) * 2021-06-04 2022-04-22 安徽凌宇电缆科技有限公司 一种海底电缆

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Application publication date: 20170315