CN202632858U - Crosslinked polyethylene insulated power cable - Google Patents

Crosslinked polyethylene insulated power cable Download PDF

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Publication number
CN202632858U
CN202632858U CN201220273052.2U CN201220273052U CN202632858U CN 202632858 U CN202632858 U CN 202632858U CN 201220273052 U CN201220273052 U CN 201220273052U CN 202632858 U CN202632858 U CN 202632858U
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layer
cross
linked polyethylene
power cable
conductor
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肖勇
邓思明
杨磊
周玉群
雷战锋
刘向云
朱国红
雷志伟
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HUBEI HENGTAI WIRE AND CABLE CO Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

本实用新型公开了一种交联聚乙烯绝缘电力电缆,包括导体、绝缘层、填充层、包带层及外护层,所述导体设于所述电缆的中心,所述绝缘层紧密挤包在所述导体的外层,所述绝缘层外包覆有包带层,所述绝缘层与所述包带层之间设有填充层,所述外护层设于所述电缆的最外层;其中,所述包带层与所述外护层之间设有非磁材料铠装层。本实用新型具有结构合理、外形新颖、性能优良及成本较低的特点,可承受较大的电流,较好的满足0.6/1KW的电力传输需求。

Figure 201220273052

The utility model discloses a cross-linked polyethylene insulated power cable, which comprises a conductor, an insulating layer, a filling layer, a tape layer and an outer protective layer, the conductor is arranged at the center of the cable, and the insulating layer is tightly packed On the outer layer of the conductor, the insulating layer is covered with a tape layer, a filling layer is provided between the insulating layer and the tape layer, and the outer sheath is arranged on the outermost part of the cable. layer; wherein, an armor layer of non-magnetic material is provided between the tape layer and the outer sheath layer. The utility model has the characteristics of reasonable structure, novel appearance, excellent performance and low cost, can bear relatively large current, and better meet the power transmission requirement of 0.6/1KW.

Figure 201220273052

Description

一种交联聚乙烯绝缘电力电缆A kind of XLPE insulated power cable

技术领域 technical field

本实用新型涉及电缆领域,特别是涉及一种交联聚乙烯绝缘电力电缆。 The utility model relates to the field of cables, in particular to a cross-linked polyethylene insulated power cable.

背景技术 Background technique

电力电缆按照使用范围、结构特征及性能要求分成若干品种,聚氯乙烯绝缘电力电缆常敷设于城市地下电网、发电站的引出线路以及用于工矿企业的内部供电还有过江过海的水下输电线。现有的普通聚氯乙烯绝缘电力电缆由于自身的结构原因,存在因长期工作温度太高而导致易燃烧损毁的问题,一般限定在70℃以下,这样就制约了电力电缆的使用功率,影响了它的适用范围。 Power cables are divided into several types according to the scope of use, structural characteristics and performance requirements. PVC insulated power cables are often laid in urban underground power grids, outgoing lines of power stations, internal power supply for industrial and mining enterprises, and underwater crossing rivers and seas. power lines. Due to its own structure, the existing ordinary PVC insulated power cables have the problem of being easily burned and damaged due to long-term working temperature, which is generally limited to below 70°C, which restricts the power of the power cable and affects the its scope of application.

实用新型内容 Utility model content

本实用新型主要解决的技术问题是提供一种结构简单、阻燃效果好、满足在高温环境下长期工作的交联聚乙烯绝缘电力电缆。 The technical problem mainly solved by the utility model is to provide a cross-linked polyethylene insulated power cable with simple structure, good flame retardant effect, and long-term work in high temperature environment.

为解决上述技术问题,本实用新型采用的一个技术方案是:提供一种交联聚乙烯绝缘电力电缆,所述交联聚乙烯绝缘电力电缆包括导体、绝缘层、填充层、包带层及外护层,所述导体设于所述电缆的中心,所述绝缘层紧密挤包在所述导体的外层,所述绝缘层外包覆有包带层,所述绝缘层与所述包带层之间设有填充层,所述外护层设于所述电缆的最外层;其中,所述包带层与所述外护层之间设有非磁材料铠装层。 In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a cross-linked polyethylene insulated power cable, the cross-linked polyethylene insulated power cable includes a conductor, an insulating layer, a filling layer, a tape layer and an outer Sheath, the conductor is arranged at the center of the cable, the insulation layer is tightly extruded on the outer layer of the conductor, the insulation layer is covered with a tape layer, and the insulation layer and the tape A filling layer is arranged between the layers, and the outer sheath is arranged on the outermost layer of the cable; wherein, a non-magnetic material armor layer is arranged between the cladding layer and the outer sheath.

其中,所述导体为钢芯铝绞线或铜芯铝绞线或铝合金芯绞线。 Wherein, the conductor is a steel-cored aluminum stranded wire, a copper-cored aluminum stranded wire, or an aluminum alloy cored stranded wire.

其中,所述导体的截面为圆形。 Wherein, the cross section of the conductor is circular.

其中,所述导体的数量为五个。 Wherein, the number of the conductors is five.

其中,所述绝缘层采用交联聚乙烯材料挤制而成。  Wherein, the insulating layer is extruded from cross-linked polyethylene material. the

其中,所述绝缘层的交联聚乙烯材料采用一步法硅烷交联聚乙烯,交联剂为液体硅烷。 Wherein, the cross-linked polyethylene material of the insulating layer adopts one-step silane cross-linked polyethylene, and the cross-linking agent is liquid silane.

其中,所述外护层采用90℃聚氯乙烯材料挤制而成,其性能指标满足GB2952标准。 Wherein, the outer protective layer is extruded from 90°C polyvinyl chloride material, and its performance index meets the GB2952 standard.

其中,所述非磁材料铠装层的材质为钢带。 Wherein, the material of the non-magnetic material armor layer is steel strip.

本实用新型的有益效果是:区别于现有技术的聚氯乙烯绝缘电力电缆,本实用新型交联聚乙烯绝缘电力电缆在绝缘层与外护层之间设有起阻燃作用的包带层,当电缆起火时,包带层形成隔热阻氧的碳化层对电缆起到保护作用,同时本实用新型设置钢带铠装层以及90℃聚氯乙烯外护层,不仅具有良好的机械性能,而且还具有一定的不延燃性,起到既保护电缆内部部件,又能阻燃的双重效果。本实用新型具有结构合理、传输性能稳定及成本较低的特点,可承受较大的电流,较好的满足0.6/1KW的电力传输需求。 The beneficial effects of the utility model are: different from the polyvinyl chloride insulated power cable of the prior art, the cross-linked polyethylene insulated power cable of the utility model is provided with a flame-retardant wrapping layer between the insulating layer and the outer sheath , when the cable catches fire, the cladding layer forms a heat-insulating and oxygen-resistant carbonized layer to protect the cable. At the same time, the utility model is equipped with a steel tape armor layer and a 90°C polyvinyl chloride outer sheath, which not only has good mechanical properties , but also has a certain non-flammability, which not only protects the internal components of the cable, but also has the dual effect of flame retardancy. The utility model has the characteristics of reasonable structure, stable transmission performance and low cost, can bear relatively large current, and satisfies the power transmission requirement of 0.6/1KW better.

附图说明 Description of drawings

图1是本实用新型的交联聚乙烯绝缘电力电缆的截面结构示意图。 Fig. 1 is a schematic cross-sectional structure diagram of a cross-linked polyethylene insulated power cable of the present invention.

具体实施方式 Detailed ways

下面结合附图和实施例对本实用新型进行详细说明。 The utility model is described in detail below in conjunction with accompanying drawing and embodiment.

请参阅图1,本实用新型提供一种交联聚乙烯绝缘电力电缆,交联聚乙烯绝缘电力电缆包括导体1、绝缘层2、包带层3、填充层4及外护层5,导体1设于电缆的中心,导体1的截面为圆形,导体1为钢芯铝绞线,也可以为铜芯铝绞线,还可以采用铝合金芯绞线。绝缘层2紧密挤包在导体1的外层,导体1的数量为五个,均匀分布在绝缘层2内。其中,绝缘层2采用交联聚乙烯材料挤制而成,交联聚乙烯材料采用一步法硅烷交联聚乙烯,交联剂为液体硅烷。绝缘层2外包覆有包带层3,绝缘层2与包带层3之间设有填充层4,外护层5设于电缆的最外层,其中,外护层5采用90℃聚氯乙烯材料挤制而成,其性能指标满足GB2952标准。包带层3与外护层5之间设有非磁材料铠装层6,非磁材料铠装层6的材质为钢带。 Please refer to Figure 1. The utility model provides a cross-linked polyethylene insulated power cable. The cross-linked polyethylene insulated power cable includes a conductor 1, an insulating layer 2, a tape layer 3, a filling layer 4 and an outer sheath 5. The conductor 1 Located in the center of the cable, the cross section of the conductor 1 is circular, and the conductor 1 is a steel-cored aluminum stranded wire, or a copper-cored aluminum stranded wire, or an aluminum alloy cored stranded wire. The insulating layer 2 is tightly packed on the outer layer of the conductor 1 , and the number of the conductors 1 is five, which are evenly distributed in the insulating layer 2 . Wherein, the insulating layer 2 is extruded from cross-linked polyethylene material, the cross-linked polyethylene material adopts one-step silane cross-linked polyethylene, and the cross-linking agent is liquid silane. The insulating layer 2 is covered with a tape layer 3, a filling layer 4 is provided between the insulating layer 2 and the tape layer 3, and an outer sheath 5 is arranged on the outermost layer of the cable, wherein the outer sheath 5 is made of 90°C polymer It is made of vinyl chloride material, and its performance index meets the GB2952 standard. A non-magnetic material armor layer 6 is arranged between the cladding layer 3 and the outer sheath layer 5, and the material of the non-magnetic material armor layer 6 is steel belt.

如图1所示,本实用新型的交联聚乙烯绝缘电力电缆在制作时,首先根据电力工程对绝缘导线不同抗拉强度的需求绞合制作导体1,具体来说,在本实施例中,导体1是由铝芯铝绞线经过复绕和绞合而制成铝芯导电线芯,然后采用电缆行业通用设备0+3式化学交联机组运用电缆通用工艺—硅烷交联工艺将硅烷交联聚乙烯一次性挤包在导体1的圆柱面上,从而形成绝缘层2。接着在绝缘层2的外表面设置一层包带层3,其中包带层3可采用云母带或者无纺布材质,再用聚丙烯撕裂绳填充,经成缆工艺被挤包在绝缘层与包带层之间形成填充层4。再将在包带层3的外表面设置一层非磁材料铠装层6,在本实施例中,非磁材料为钢带。钢带铠装层6使得电缆能够承受机械外力的作用。最后在钢带铠装层6的表面设置一层外护层5,外护层5由聚氯乙烯材料挤制而成,其性能指标满足GB2952标准。 As shown in Figure 1, when the cross-linked polyethylene insulated power cable of the present invention is produced, firstly, the conductor 1 is made by stranding according to the requirements of different tensile strengths of the insulated conductors in electric power engineering. Specifically, in this embodiment, Conductor 1 is made of aluminum core aluminum stranded wire through rewinding and twisting to make aluminum core conductive wire core, and then adopt 0+3 type chemical cross-linking unit, which is a common equipment in the cable industry, to use the common process of cable - silane cross-linking process to cross the silane cross-linking process. The linked polyethylene is extruded on the cylindrical surface of the conductor 1 at one time, so as to form the insulating layer 2 . Then set a layer of tape layer 3 on the outer surface of the insulating layer 2, wherein the tape layer 3 can be made of mica tape or non-woven fabric material, and then filled with polypropylene tearing rope, which is extruded on the insulating layer through a cable forming process A filling layer 4 is formed between the wrapping layer and the tape layer. A layer of non-magnetic material armor layer 6 will be arranged on the outer surface of the cladding layer 3. In this embodiment, the non-magnetic material is a steel strip. The steel tape armor layer 6 enables the cable to withstand mechanical external forces. Finally, an outer sheath 5 is provided on the surface of the steel tape armor layer 6. The outer sheath 5 is extruded from polyvinyl chloride, and its performance index meets the GB2952 standard.

由于本实用新型的交联聚乙烯绝缘电力电缆使用了交联聚乙烯绝缘,相比起传统聚氯乙烯绝缘,交联聚乙烯具有更高的工作温度及短路温度、更长的耐气候老化寿命,也具有更好的耐机械性能,同时了交联聚乙烯的体积电阻率相对较高,介电常数偏小电性能好,绝缘效果佳。当电缆起火时,包带层3中的云母带形成隔热阻氧的碳化层,对电缆起到保护,从而组织火焰沿电缆扩张燃烧。当周边起火时,包带层3可保护电缆在一定时间内不受损害,保障电力的正常运行。另外,外护层5采用90℃聚氯乙烯材料,不仅具有较好的机械性能,而且还具有一定的不延燃性,起到既保护电缆内部部件,又能够阻燃的双重效果。 Since the cross-linked polyethylene insulated power cable of the utility model uses cross-linked polyethylene insulation, compared with traditional polyvinyl chloride insulation, cross-linked polyethylene has a higher working temperature and short-circuit temperature, and a longer weather-resistant aging life , It also has better mechanical resistance. At the same time, the volume resistivity of cross-linked polyethylene is relatively high, the dielectric constant is small, the electrical performance is good, and the insulation effect is good. When the cable catches fire, the mica tape in the tape layer 3 forms a heat-insulating and oxygen-resistant carbonized layer to protect the cable, thereby preventing the flame from spreading and burning along the cable. When the surrounding area catches fire, the tape layer 3 can protect the cable from being damaged within a certain period of time and ensure the normal operation of the electric power. In addition, the outer sheath 5 is made of 90°C polyvinyl chloride material, which not only has good mechanical properties, but also has a certain non-flammability, which not only protects the internal components of the cable, but also has the dual effect of flame retardancy.

与现有技术的架空绝缘电缆相比,本实用新型具有结构合理、外形新颖、性能优良及成本较低的特点,可承受较大的电流,较好的满足0.6/1KW的电力传输需求。 Compared with the overhead insulated cables in the prior art, the utility model has the characteristics of reasonable structure, novel appearance, excellent performance and low cost, can withstand larger current, and better meet the power transmission requirements of 0.6/1KW.

以上所述仅为本实用新型的实施例,并非因此限制本实用新型的专利范围,凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本实用新型的专利保护范围内。 The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (8)

1. power cable with cross-linked polyethylene insulation; It is characterized in that said power cable with cross-linked polyethylene insulation comprises conductor, insulating barrier, packed layer, belting layer and outer jacket, said conductor is located at the center of said cable; Said insulating barrier closely is extruded in the skin of said conductor; Said insulating barrier is coated with belting layer, is provided with packed layer between said insulating barrier and the said belting layer, and said outer jacket is located at the outermost layer of said cable; Wherein, be provided with the non-magnetic material armour between said belting layer and the said outer jacket.
2. power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that, said conductor is steel reinforced aluminium conductor or copper core aluminum stranded wire or aluminium alloy core twisted wire.
3. power cable with cross-linked polyethylene insulation according to claim 2 is characterized in that, the cross section of said conductor is circular.
4. power cable with cross-linked polyethylene insulation according to claim 3 is characterized in that, the quantity of said conductor is five.
5. power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that, said insulating barrier adopts cross-linking polyethylene materials to extrude and forms.
6. power cable with cross-linked polyethylene insulation according to claim 5 is characterized in that, the cross-linking polyethylene materials of said insulating barrier adopts one-step silane cross-linked polyethylene, and crosslinking agent is a liquid silane.
7. power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that, said outer jacket adopts 90 ℃ of pvc materials to extrude and forms.
8. power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that, the material of said non-magnetic material armour is a steel band.
CN201220273052.2U 2012-06-12 2012-06-12 Crosslinked polyethylene insulated power cable Expired - Fee Related CN202632858U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD779440S1 (en) 2014-08-07 2017-02-21 Henkel Ag & Co. Kgaa Overhead transmission conductor cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD779440S1 (en) 2014-08-07 2017-02-21 Henkel Ag & Co. Kgaa Overhead transmission conductor cable
USD868701S1 (en) 2014-08-07 2019-12-03 Henkel Ag & Co. Kgaa Overhead transmission conductor cable

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