WO2020119442A1 - 一种柔软型耐火变频电力电缆 - Google Patents

一种柔软型耐火变频电力电缆 Download PDF

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Publication number
WO2020119442A1
WO2020119442A1 PCT/CN2019/120885 CN2019120885W WO2020119442A1 WO 2020119442 A1 WO2020119442 A1 WO 2020119442A1 CN 2019120885 W CN2019120885 W CN 2019120885W WO 2020119442 A1 WO2020119442 A1 WO 2020119442A1
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Prior art keywords
layer
tape
cores
power cable
cable
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PCT/CN2019/120885
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English (en)
French (fr)
Inventor
魏辰冰
张锐
闫俊桥
刘焱鑫
刘秋生
代子阳
刘坤瑜
王思元
卢柏会
Original Assignee
江苏中利集团股份有限公司
宁夏中盛电缆技术有限公司
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Application filed by 江苏中利集团股份有限公司, 宁夏中盛电缆技术有限公司 filed Critical 江苏中利集团股份有限公司
Priority to DE212019000139.4U priority Critical patent/DE212019000139U1/de
Publication of WO2020119442A1 publication Critical patent/WO2020119442A1/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
    • H01B7/17—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
    • H01B7/1855—Sheaths comprising helical wrapped non-metallic layers
    • 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing 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
    • H01B7/29—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

Definitions

  • the utility model relates to a frequency conversion power cable, in particular to a flexible fire-resistant frequency conversion power cable, which belongs to the technical field of cable manufacturing.
  • variable frequency motors for engineering projects around the world
  • variable frequency cables are also increasing.
  • This type of cable is generally a conventional variable frequency power cable designed by various manufacturers. It is generally a 3+3 core structure with a total shielding structure. It can well prevent electromagnetic interference and has good shielding effect.
  • the frequency conversion cables on the market are uneven, with different performance indicators, and some of them have fire resistance requirements.
  • the fire resistance level of the products on the market is relatively low, generally only meets the fire resistance requirements of the national standard, ie IEC 60331-11/IEC 60331-21 fire resistance requirements (750°C), such as the authorized announcement number CN102610317B
  • Frequency conversion cable which has a cable core in the middle, the cable core includes three main insulated cores and three zero cores, and an optical unit is provided in the middle of the cable core or the gap between the main insulated core and the zero core, and the cable core is sequentially arranged outside Metal shielding layer, longitudinally clad aluminum-plastic composite layer, isolation sleeve, armor layer and outer sheath, the cable enhances the functions of conventional frequency conversion cable, making it have functions such as alarm, temperature measurement, status monitoring, frequency feedback, signal transmission, etc. , But the fire resistance level is relatively low.
  • the purpose of the utility model is to provide a flexible fire-resistant frequency conversion power cable, which meets the requirements of Australian standard fire resistance and flexibility.
  • a flexible fire-resistant variable-frequency power cable includes a cable core.
  • the cable core includes three main cores and three ground cores.
  • the main cores are arranged together.
  • the ground cores are arranged between the main cores.
  • a first cladding layer, a braided layer, and a sheath layer are sequentially arranged outside the cable core.
  • the first cladding layer is formed by wrapping a high-flame-retardant cladding tape;
  • the main wire core includes five types of conductors. The five types of conductors are wrapped around with mica tape, and the mica tape is covered with an insulating layer.
  • the covering rate of the mica tape around the package is 50%, which ensures fire resistance (AS/NZS3013 fire resistance requirements).
  • the mica tape has two layers.
  • a second wrapping tape layer is provided between the braided layer and the sheath layer, and the second wrapping tape layer is formed by wrapping a high-flame-retardant wrapping tape.
  • an extrusion filling strip is provided between the main wire cores.
  • the cable of the utility model has excellent mica tape wrapped around the conductor, which can meet the Australian standard AS/NZS 3013 fire resistance requirement (1050°C), meanwhile, the conductor is designed into five types of conductors, and the inner lining structure is designed by extrusion
  • the model is changed to use high flame retardant straps to wrap around the bag, and the overall structure design is relatively soft, which is convenient for actual installation.
  • Figure 1 is a schematic diagram of the utility model.
  • a flexible fire-resistant variable frequency power cable includes a cable core, a first clad layer 5, a braided layer 6, a second clad layer 7, and a jacket layer 8 from inside to outside.
  • the cable core includes three main wire cores and three ground wire cores, the main wire cores are arranged together, and the ground wire cores are arranged between the main wire cores.
  • an extrusion filling strip 4 is provided between the main cores.
  • the main wire core includes five types of conductors 1.
  • the five types of conductors 1 are surrounded by a mica tape 2, and the mica tape 2 is an insulating layer 3.
  • the mica tape 2 is composed of two layers, and the covering rate of each layer of mica tape 2 is 50%, which ensures the fire resistance performance (AS/NZS 3013 fire resistance requirements).
  • the structure of the ground wire core adopts the structure in the prior art.
  • the first wrapping tape layer 5 and the second wrapping tape layer 7 are made of high-flame-retardant wrapping tape and wrapped around the cover.
  • the highly flame-retardant wrapping tape can be a halogen-free, low-smoke, high-flame retardant fire and oxygen-proof glass cloth wrapping tape disclosed by the public number CN207367661U, or it can also use the wire and cable flame retardant wrapping package sold by Suzhou Taifang Cable Material Co., Ltd. band.

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  • Insulated Conductors (AREA)

Abstract

一种柔软型耐火变频电力电缆，包括缆芯，所述缆芯包括三个主线芯和三个地线芯，所述主线芯排列在一起，所述地线芯设置在主线芯之间，所述缆芯外依次设置有第一包带层（5）、编织层（6）、护套层（8），所述第一包带层（5）采用高阻燃包带搭盖绕包而成；所述主线芯包括五类导体（1），所述五类导体（1）外绕包有云母带（2），所述云母带（2）外为绝缘层（3）；该电缆在导体外绕包性能优异的云母带（2），可满足澳标AS/NZS 3013耐火要求(1050℃)，同时将导体设计成五类导体（1）,并将内衬层结构设计由挤包型更改为采用高阻燃包带搭盖绕包，整体结构设计较为柔软,便于实际安装。

Description

一种柔软型耐火变频电力电缆 技术领域
本实用新型涉及一种变频电力电缆，具体是一种柔软型耐火变频电力电缆，属于电缆制造技术领域。
背景技术
随着工程项目用变频电机在全球各地的日益普及，配套的变频电缆需求量也日益增加,该类型电缆一般为各厂家设计的常规变频电力电缆,一般为3+3芯结构带总屏蔽结构,可以很好的防止电磁干扰,屏蔽效果好。
市场上的变频电缆参差不齐，性能指标各不相同，其中的一部分有耐火要求。对于有耐火要求的变频电缆，市场上的产品耐火等级相对较低，一般仅满足国标耐火要求，即IEC 60331-11/IEC 60331-21耐火要求(750℃),如授权公告号为CN102610317B公开的变频电缆，该电缆中间为缆芯，缆芯包括三根主绝缘线芯和三根零线芯，在缆芯中间或者主绝缘线芯和零线芯的缝隙处设有光单元，缆芯外依次设置金属屏蔽层，纵包铝塑复合层，隔离套，铠装层及外护套，该电缆增强了常规变频电缆的功能，使其具有报警、温度测量、状态监测、频率反馈、信号传输等功能，但是耐火等级相对较低。
目前，市场上满足更高指标要求的澳标耐火(温度等级1050℃)的产品几乎没有。将电缆设计成柔软型便于敷设,同时满足澳标耐火及柔软型的电缆设计更是难以实现。
实用新型内容
本实用新型的目的是提供一种柔软型耐火变频电力电缆，该变频电缆满足澳标耐火及柔软的要求。
为了达到上述技术目的，本实用新型的技术方案是：
一种柔软型耐火变频电力电缆，包括缆芯，所述缆芯包括三个主线芯和三个地线芯，所述主线芯排列在一起，所述地线芯设置在主线芯之间，所述缆芯外依次设置有第一包带层、编织层、护套层，所述第一包带层采用高阻燃 包带搭盖绕包而成；所述主线芯包括五类导体，所述五类导体外绕包有云母带，所述云母带外为绝缘层。
所述云母带绕包的搭盖率为50％，该搭盖率确保了耐火性能(AS/NZS3013耐火要求)，作为优选，所述云母带为两层。
为了进一步提高耐火性能，在所述编织层和护套层之间设置有第二包带层，所述第二包带层采用高阻燃包带搭盖绕包而成。
为了使电缆结构圆整,所述主线芯之间设置有支撑作用的挤出填充条。
本实用新型的电缆在导体外绕包性能优异的云母带，可满足澳标AS/NZS 3013耐火要求(1050℃)，同时将导体设计成五类导体,并将内衬层结构设计由挤包型更改为采用高阻燃包带搭盖绕包，整体结构设计较为柔软,便于实际安装。
附图说明
图1为本实用新型的结构示意图。
具体实施方式
下面结合附图和具体实施方式对本实用新型作进一步详细的说明。
如图1所示，一种柔软型耐火变频电力电缆，由内向外依次为缆芯、第一包带层5、编织层6、第二包带层7、护套层8。
所述缆芯包括三个主线芯和三个地线芯，所述主线芯排列在一起，所述地线芯设置在主线芯之间。为了使电缆结构圆整,所述主线芯之间设置有支撑作用的挤出填充条4。所述主线芯包括五类导体1，所述五类导体1外绕包有云母带2，所述云母带2外为绝缘层3。所述云母带2为两层，每层云母带2绕包的搭盖率为50％，该搭盖率确保了耐火性能(AS/NZS 3013耐火要求)。地线芯的结构采用现有技术中的结构。
所述第一包带层5、第二包带层7采用高阻燃包带搭盖绕包而成。高阻燃包带可以采用公开号为CN207367661U公开的一种无卤低烟高阻燃隔火隔氧玻璃布包带，也可以采用苏州泰方线缆材料有限公司销售的电线电缆阻燃绕包 带。
编织层6、护套层8的结构和材料均采用现有技术中的方案。
上述实施例不以任何方式限制本实用新型，凡是采用等同替换或等效变换的方式获得的技术方案均落在本实用新型的保护范围内。

Claims (5)

  1. 一种柔软型耐火变频电力电缆，包括缆芯，所述缆芯包括三个主线芯和三个地线芯，所述主线芯排列在一起，所述地线芯设置在主线芯之间，其特征在于：所述缆芯外依次设置有第一包带层(5)、编织层(6)、护套层(8)，所述第一包带层(5)采用高阻燃包带搭盖绕包而成；所述主线芯包括五类导体(1)，所述五类导体外绕包有云母带(2)，所述云母带(2)外为绝缘层(3)。
  2. 根据权利要求1所述的一种柔软型耐火变频电力电缆，其特征在于：所述云母带(2)绕包的搭盖率为50％。
  3. 根据权利要求1所述的一种柔软型耐火变频电力电缆，其特征在于：所述云母带(2)为两层。
  4. 根据权利要求1、2或3所述的一种柔软型耐火变频电力电缆，其特征在于：在所述编织层(6)和护套层(8)之间设置有第二包带层(7)，所述第二包带层(7)采用高阻燃包带搭盖绕包而成。
  5. 根据权利要求1所述的一种柔软型耐火变频电力电缆，其特征在于：所述主线芯之间设置有挤出填充条(4)。
PCT/CN2019/120885 2018-12-11 2019-11-26 一种柔软型耐火变频电力电缆 WO2020119442A1 (zh)

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Cited By (1)

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CN117594294A (zh) * 2024-01-08 2024-02-23 雄超阻燃电缆(固安)有限公司 一种耐火阻燃特种电缆及其生产工艺

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CN209343843U (zh) * 2018-12-11 2019-09-03 江苏中利集团股份有限公司 一种柔软型耐火变频电力电缆

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CN203617025U (zh) * 2013-11-25 2014-05-28 江苏上上电缆集团有限公司 额定电压1.9/3.3kV及以下煤矿变频装置用电缆
KR20170064246A (ko) * 2015-12-01 2017-06-09 엘에스전선 주식회사 고내화 케이블
CN209343843U (zh) * 2018-12-11 2019-09-03 江苏中利集团股份有限公司 一种柔软型耐火变频电力电缆

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CN201413729Y (zh) * 2009-05-13 2010-02-24 安徽新宇缆业集团有限公司 船用耐火型变频电缆
CN203617025U (zh) * 2013-11-25 2014-05-28 江苏上上电缆集团有限公司 额定电压1.9/3.3kV及以下煤矿变频装置用电缆
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