WO2020029409A1 - 66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆 - Google Patents

66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆 Download PDF

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WO2020029409A1
WO2020029409A1 PCT/CN2018/108444 CN2018108444W WO2020029409A1 WO 2020029409 A1 WO2020029409 A1 WO 2020029409A1 CN 2018108444 W CN2018108444 W CN 2018108444W WO 2020029409 A1 WO2020029409 A1 WO 2020029409A1
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layer
water
conductor
semi
conductive
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PCT/CN2018/108444
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English (en)
French (fr)
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陈果
谢书鸿
薛驰
薛建林
张建民
张洪亮
王丽媛
张硕
王俊勇
赵囿林
朱井华
张雪峰
陈步圣
许愿
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中天科技海缆有限公司
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Publication of WO2020029409A1 publication Critical patent/WO2020029409A1/zh

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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
    • H01B7/14—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
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded 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
    • 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
    • H01B7/282—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
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements
    • 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

Definitions

  • the invention relates to the technical field of submarine cable manufacturing, in particular to a cross-linked polyethylene insulated lightweight AC optical fiber composite submarine cable with a rated voltage of 66kV.
  • the invention has a small insulation thickness and a rated voltage of 66 kV.
  • a 66kV XLPE insulated light AC optical fiber composite submarine cable which includes a water blocking conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semi-conductive resistance water layer, a metal wire shield, and a metal Band layer, semi-conductive buffer water blocking layer, metal band water blocking layer, phase separation protective layer, filling layer, optical unit, wrapping layer, inner cushion layer, armor layer and outer cover layer, said conductor, conductor shielding layer , Insulation layer, insulation shielding layer, semi-conductive resistance water layer, metal wire shielding, metal tape layer, semi-conductive buffer water blocking layer, metal tape water blocking layer, and phase separation protective layer constitute the cable core structure; provided outside the water blocking conductor There is a conductor shield layer, an insulation layer is provided outside the conductor shield layer, an insulation shield layer is provided outside the insulation layer, a semiconductive resistance water layer is provided outside the insulation shield layer, and a wire shield is provided outside the semiconductive buffer water resistance layer Layer,
  • Layer at the core of the cable Filling layer is filled during twisting, and optical units are placed in gaps.
  • a wrapping layer is provided.
  • An inner cushion layer is provided outside the wrapping layer.
  • An armor layer is provided outside the inner cushion layer.
  • An outer cover layer is provided outside the armor layer.
  • the thickness of the insulating layer is 10-13 mm.
  • the water blocking conductor is one of annealed copper conductor, tinned copper conductor, aluminum conductor, and aluminum alloy conductor; the water blocking conductor has a vertical water blocking function.
  • the conductor shielding layer is made of wrapped semi-conductive tape + extruded super-smooth semi-conductive shielding material.
  • the insulation layer is uniformly extruded on the conductor shielding layer by using an ultra-clean and ultra-water-resistant tree-crosslinked polyethylene material.
  • the thickness of the insulating layer is 11 mm.
  • the insulating shielding layer is directly extruded and wrapped on the insulating layer by using an ultra-smooth semi-conductive shielding material.
  • the semi-conductive buffer water blocking layer is wrapped around the insulating shielding layer by using a semi-conductive resistance water band and a copper wire, a copper band and a water blocking band.
  • the semi-conductive buffer water blocking layer uses a metal composite tape as a water blocking layer.
  • the phase-separated protective layer is made of polyethylene, polyvinyl chloride material or semi-conductive polyethylene, and the semi-conductive polyethylene is directly extruded for radial protection.
  • the thickness of the insulation layer is small, the rated voltage is 66kV, and the insulation thickness of the 800mm 2 submarine cable is 10-13mm, and the optimal is 11mm, which is significantly lower than the requirements of relevant domestic technical documents;
  • This cable does not use a lead sheath, but uses a non-single structure combining a metal wire shield (copper wire shield) and a metal tape structure (aluminum-plastic composite tape or copper-plastic composite tape). The needs of the next project;
  • the invention adopts a thin insulation and non-lead jacket structure design, breaking the conventional 66kV submarine cable conventional design ideas, reducing product weight, reducing costs, and significantly lower than the weight of conventional submarine cables;
  • FIG. 1 is a schematic structural diagram of an embodiment of a cable according to the present invention.
  • Water blocking conductor 1 Conductor shield 2 Insulation 3 Insulation shield 4 Semiconductive water layer 5 Wire shield 6 Metal strip 7 Semi-conductive buffer water blocking layer 8 Water barrier 9 Phase separation cover 10 Filling layer 11 Light unit 12 Wrapping 13 Inner cushion 14 Armor layer 15 Outer cover 16
  • a 66kV XLPE insulated light AC optical fiber composite submarine cable shown in FIG. 1 includes a water blocking conductor 1, a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a semi-conductive resistance water layer 5, and a metal wire.
  • the metal tape water blocking layer 9 and the phase separation protective layer 10 constitute a cable core structure; a conductor shielding layer 2 is provided outside the water blocking conductor 1, an insulating layer 3 is provided outside the conductor shielding layer 2, and an insulating layer 3 is provided outside the insulating layer 3.
  • the insulating shielding layer 4 is provided with a semi-conductive resistance water layer 5 outside the insulating shielding layer 4, a wire shielding layer 6 is provided outside the semi-conductive buffer water resistance layer 5, and a metal tape layer 7 is provided outside the wire shielding layer 6.
  • a semiconducting resistive water layer 8 is provided outside the metal strip layer 7, a metal tape resisting water layer 9 is provided outside the semiconducting resistive water layer 8, and a peripheral part of the metal resistive water layer 9 is provided
  • the phase separation protective layer 10 is filled with a filling layer 11 when the core of the cable is stranded, the optical unit 12 is placed in a gap, and a wrapping layer 13 is wound after the cable is formed.
  • An inner cushion layer 14 and an inner cushion layer are provided outside the wrapping layer 13 14 is provided with an armor layer 15 and an outer cover layer 16 is provided outside the armor layer 15, and the thickness of the insulation layer 3 is 10-13 mm.
  • the number of cable cores is at least one, and preferably three.
  • the water blocking conductor 1 is one of annealed copper conductor, tinned copper conductor, aluminum conductor, and aluminum alloy conductor; the water blocking conductor 1 has a vertical water blocking function.
  • the conductor shielding layer 2 is composed of a wrapped semi-conductive tape + an extruded super-smooth semi-conductive shielding material.
  • the insulation layer 3 is uniformly extruded on the conductor shielding layer 2 by using an ultra-clean and ultra-water-resistant tree-crosslinked polyethylene material.
  • the thickness of the insulating layer 3 is preferably 11 mm, which is significantly lower than the requirements of relevant domestic technical documents.
  • the insulating shielding layer 4 is directly extruded and wrapped on the insulating layer 3 by using an ultra-smooth semi-conductive shielding material.
  • the semi-conductive buffer water-blocking layer 8 is wrapped around the insulating shielding layer 4 with a semi-conductive resistance water-band and a copper wire, a copper tape and a water-blocking band; or the semi-conductive buffer water-blocking layer 8 is used. Covered with a metal composite tape as a water blocking layer.
  • the phase-separated protective layer 10 is used as a radial protective layer, and polyethylene, polyvinyl chloride material or semi-conductive polyethylene is used, and the semi-conductive polyethylene is directly extruded for radial protection.
  • the filling layer 11 is made of polypropylene, polyethylene, or other filling ropes or formed as a filling material; or porous polypropylene, polyethylene is used as the filling material.
  • the wrapping layer 13 is made of materials such as synthetic tape, rubber coated cotton tape, and non-woven tape.
  • the inner cushion layer 14 is wrapped with polypropylene, polyethylene, polyvinyl chloride and other materials or directly extruded.
  • the armor layer 15 is made of galvanized steel wire, copper wire, stainless steel wire and other materials, and is wound on the inner cushion layer.
  • the outer cover layer 16 is wrapped with polypropylene, polyethylene, polyvinyl chloride, or other materials or directly extruded.

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  • Insulated Conductors (AREA)

Abstract

一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，包括阻水导体(1)、导体屏蔽层(2)、绝缘层(3)、绝缘屏蔽层(4)、半导电阻水层(5)、金属丝屏蔽(6)、金属带层(7)、半导电缓冲阻水层(8)、金属带阻水层(9)、分相护层(10)、填充层(11)、光单元(12)、绕包层(13)、内垫层(14)、铠装层(15)和外被层(16)。解决了大容量风机发电传输的瓶颈以及因电缆重量大受限制于运输船，安装船的难题。

Description

66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆 技术领域
本发明涉及海底电缆制造技术领域，特别涉及额定电压66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆。
背景技术
本部分旨在为权利要求书中陈述的本发明的实施方式提供背景或上下文。此处的描述不因为包括在本部分中就承认是现有技术。
随着我国海洋经济的快速发展，海上风电、海上石油平台开发活动日益增强，原有的低电压等级、常规结构设计海缆不能满足需要；设计交联聚乙烯绝缘轻型交流光纤复合海底电缆成为必然趋势。
随着海洋开发的发展，海上风电单机容量越来越大，原有的风机采用35kV的输电电压，现在将改为66kV或更高的输出电压,传统的绝缘海缆的不具有抗水树性、需要采用铅套作为防水保护、绝缘厚度大，重量大，成本高，安装敷设、维修难度也高。
发明内容
鉴于以上内容，有必要提供一种结构合理安全可靠，适用在高电压等级的轻型交联聚乙烯绝缘海底电缆，该发明中绝缘厚度较小，额定电压66kV。
本发明提供的技术方案为：一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，包括阻水导体、导体屏蔽层、绝缘层、绝缘屏蔽层、半导电阻水层、金属丝屏蔽、金属带层、半导电缓冲阻水层、金属带阻水层、分相护层、填充层、光单元、绕包层、内垫层、铠装层和外被层，所述导体、导体屏蔽层、绝缘层、绝缘屏蔽层、半导电阻水层、金属丝屏蔽、金属带层、半导电缓冲阻水层、金属带阻水层、 分相护层构成缆芯结构；在阻水导体外设置有导体屏蔽层，在导体屏蔽层外设置有绝缘层，在绝缘层外设置有绝缘屏蔽层，在绝缘屏蔽层外设置有半导电阻水层，在半导电缓冲阻水层外设置金属丝屏蔽层，在金属丝屏蔽层外设置金属带层，在金属带层外设置半导电阻水层，在半导电阻水层外设置金属带阻水层，在金属带阻水层外设置分相护层，在缆芯成缆绞合时填充有填充层，间隙放置光单元，成缆后绕有绕包层，绕包层外设置内垫层，内垫层外设置铠装层，铠装层外设置外被层，所述绝缘层的厚度为10-13mm。
进一步的，所述阻水导体采用退火铜导体、镀锡铜导体、铝导体、铝合金导体中的一种；阻水导体具有纵向阻水功能。
进一步的，所述导体屏蔽层采用绕包半导电带+挤包超光滑半导电屏蔽料组成。
进一步的，所述绝缘层采用超洁净超抗水树交联聚乙烯材料均匀的挤包在导体屏蔽层上。
进一步的，所述绝缘层的厚度为11mm。
进一步的，所述绝缘屏蔽层采用超光滑半导电屏蔽料直接挤包在绝缘层上。
进一步的，所述半导电缓冲阻水层采用半导电阻水带与铜丝、铜带和阻水带绕包在绝缘屏蔽层上。
进一步的，所述半导电缓冲阻水层采用包覆一层金属复合带作为阻水层。
进一步的，所述分相护层作为径向保护层，采用聚乙烯，聚氯乙烯材料或者半导电聚乙烯，半导电聚乙烯直接挤包作为径向保护。
与现有技术相比，本发明的有益效果如下：
(1)绝缘层厚度较小，额定电压66kV，800mm 2海缆绝缘厚度为10-13mm，最优为11mm，显著低于国内相关技术文件要求；
(2)该海缆不采用铅护套，采用金属丝屏蔽(铜丝屏蔽)和金属带层结构(铝塑复合带或铜塑复合带)相结合的非单一结构，能够 满足长期应用在水下工程的需要；
(3)该发明采用薄绝缘、非铅套结构设计，打破传统66kV海缆常规设计思路，减少了产品重量，降低了成本，显著低于常规海缆的重量；
(4)解决了大容量风机发电传输的瓶颈，解决了因电缆重量大受限制于运输船，安装船的难题，节约了资源，降低了成本，是一种环保型高压海底电缆，对轻型海底电缆具有显著的社会意义和经济意义。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1为本发明电缆一个实施例的结构示意图。
附图标记说明:
阻水导体 1
导体屏蔽层 2
绝缘层 3
绝缘屏蔽层 4
半导电阻水层 5
金属丝屏蔽 6
金属带层 7
半导电缓冲阻水层 8
金属带阻水层 9
分相护层 10
填充层 11
光单元 12
绕包层 13
内垫层 14
铠装层 15
外被层 16
如下具体实施方式将结合上述附图进一步说明本发明实施例。
具体实施方式
为了能够更清楚地理解本发明实施例的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行详细描述。需要说明的是，在不冲突的情况下，本申请的实施方式中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明实施例，所描述的实施方式仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本发明实施例保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明实施例的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明实施例。
实施例1
如图1所示的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，包括阻水导体1、导体屏蔽层2、绝缘层3、绝缘屏蔽层4、半导电阻水层5、金属丝屏蔽6、金属带层7、半导电缓冲阻水层8、金属带阻水层9、分相护层10、填充层11、光单元12、绕包层13、内垫层14、铠装层15和外被层16，所述导体1、导体屏蔽层2、绝缘层3、绝缘屏蔽层4、半导电阻水层5、金属丝屏蔽6、金属带层7、半导电缓冲阻水层8、金属带阻水层9、分相护层10构成缆芯结构；在阻水导体1外设置有导体屏蔽层2，在导体屏蔽层2外设置有绝缘层3，在绝缘层3外设置有绝缘屏蔽层4，在绝缘屏蔽层4外设置有半导电阻水层5，在半导电缓冲阻水层5外设置金属丝屏蔽层6，在金属丝屏蔽层6外设置金属带层7，在金属带层7外设置半导电阻水层8，在半导电阻水层8外设置金属带阻水层9，在金属带阻水层9外设置分相护层10，在缆芯成缆绞合时填充有填充层11，间隙放置光单元12，成缆后绕有绕包层13，绕包层13外设置内垫层14，内 垫层14外设置铠装层15，铠装层15外设置外被层16，所述绝缘层3的厚度为10-13mm。
本实施例中，缆芯的数量至少采用一根，优选采用三根。
本实施例中，所述阻水导体1采用退火铜导体、镀锡铜导体、铝导体、铝合金导体中的一种；阻水导体1具有纵向阻水功能。
本实施例中，所述导体屏蔽层2采用绕包半导电带+挤包超光滑半导电屏蔽料组成。
本实施例中，所述绝缘层3采用超洁净超抗水树交联聚乙烯材料均匀的挤包在导体屏蔽层2上。
本实施例中，优选绝缘层3的厚度为11mm，显著低于国内相关技术文件要求。
本实施例中，所述绝缘屏蔽层4采用超光滑半导电屏蔽料直接挤包在绝缘层3上。
本实施例中，所述半导电缓冲阻水层8采用半导电阻水带与铜丝、铜带和阻水带绕包在绝缘屏蔽层4上；或者所述半导电缓冲阻水层8采用包覆一层金属复合带作为阻水层。
本实施例中，所述分相护层10作为径向保护层，采用聚乙烯，聚氯乙烯材料或者半导电聚乙烯，半导电聚乙烯直接挤包作为径向保护。
本实施例中，所述填充层11采用聚丙烯，聚乙烯等填充绳或者成型填充材料；或采用多孔型聚丙烯，聚乙烯成型填充材料。
本实施例中，所述绕包层13采用合成带，涂胶棉布带，无纺布带等材料。
本实施例中，所述的内垫层14采用聚丙烯，聚乙烯，聚氯乙烯等材料缠绕或者直接挤包。
本实施例中，所述的铠装层15采用镀锌钢丝，铜丝，不锈钢丝等其他材料，缠绕在内垫层上。
本实施例中，所述的外被层16采用聚丙烯，聚乙烯，聚氯乙烯 等材料缠绕或者直接挤包。
以上实施方式仅用以说明本发明实施例的技术方案而非限制，尽管参照以上较佳实施方式对本发明实施例进行了详细说明，本领域的普通技术人员应当理解，可以对本发明实施例的技术方案进行修改或等同替换都不应脱离本发明实施例的技术方案的精神和范围。

Claims (9)

  1. 一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：包括阻水导体(1)、导体屏蔽层(2)、绝缘层(3)、绝缘屏蔽层(4)、半导电阻水层(5)、金属丝屏蔽(6)、金属带层(7)、半导电缓冲阻水层(8)、金属带阻水层(9)、分相护层(10)、填充层(11)、光单元(12)、绕包层(13)、内垫层(14)、铠装层(15)和外被层(16)，所述导体(1)、导体屏蔽层(2)、绝缘层(3)、绝缘屏蔽层(4)、半导电阻水层(5)、金属丝屏蔽(6)、金属带层(7)、半导电缓冲阻水层(8)、金属带阻水层(9)、分相护层(10)构成缆芯结构；在阻水导体(1)外设置有导体屏蔽层(2)，在导体屏蔽层(2)外设置有绝缘层(3)，在绝缘层(3)外设置有绝缘屏蔽层(4)，在绝缘屏蔽层(4)外设置有半导电阻水层(5)，在半导电缓冲阻水层(5)外设置金属丝屏蔽层(6)，在金属丝屏蔽层(6)外设置金属带层(7)，在金属带层(7)外设置半导电阻水层(8)，在半导电阻水层(8)外设置金属带阻水层(9)，在金属带阻水层(9)外设置分相护层(10)，在缆芯成缆绞合时填充有填充层(11)，间隙放置光单元(12)，成缆后绕有绕包层(13)，绕包层(13)外设置内垫层(14)，内垫层(14)外设置铠装层(15)，铠装层(15)外设置外被层(16)，所述绝缘层(3)的厚度为10-13mm。
  2. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述阻水导体(1)采用退火铜导体、镀锡铜导体、铝导体、铝合金导体中的一种；阻水导体(1)具有纵向阻水功能。
  3. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述导体屏蔽层(2)采用绕包半导电带+挤包超光滑半导电屏蔽料组成。
  4. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述绝缘层(3)采用超洁净超抗水树交联聚乙烯材料均匀的挤包在导体屏蔽层(2)上。
  5. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流 光纤复合海底电缆，其特征在于：所述绝缘层(3)的厚度为11mm。
  6. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述绝缘屏蔽层(4)采用超光滑半导电屏蔽料直接挤包在绝缘层(3)上。
  7. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述半导电缓冲阻水层(8)采用半导电阻水带与铜丝、铜带和阻水带绕包在绝缘屏蔽层(4)上。
  8. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述半导电缓冲阻水层(8)采用包覆一层金属复合带作为阻水层。
  9. 根据权利要求1所述的一种66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆，其特征在于：所述分相护层(10)作为径向保护层，采用聚乙烯，聚氯乙烯材料或者半导电聚乙烯，半导电聚乙烯直接挤包作为径向保护。
PCT/CN2018/108444 2018-08-10 2018-09-28 66kV交联聚乙烯绝缘轻型交流光纤复合海底电缆 WO2020029409A1 (zh)

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