CN203103001U - A medium voltage (8.7/10kV) variable frequency power cable - Google Patents
A medium voltage (8.7/10kV) variable frequency power cable Download PDFInfo
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- CN203103001U CN203103001U CN201320018484.3U CN201320018484U CN203103001U CN 203103001 U CN203103001 U CN 203103001U CN 201320018484 U CN201320018484 U CN 201320018484U CN 203103001 U CN203103001 U CN 203103001U
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- 239000004020 conductor Substances 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 239000003063 flame retardant Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 229910052736 halogen Inorganic materials 0.000 claims 2
- 150000002367 halogens Chemical class 0.000 claims 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000008029 eradication Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 40
- 238000002955 isolation Methods 0.000 abstract description 8
- 239000011241 protective layer Substances 0.000 abstract description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 abstract description 5
- 239000008397 galvanized steel Substances 0.000 abstract description 5
- -1 halogen-free Substances 0.000 abstract description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 3
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 6
- 230000005684 electric field Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
本实用新型公开了一种中压（8.7/10kV）变频电力电缆，包括三根导体，三根导体为多根铜线经绞合紧压成圆形紧压铜导体，三根导体外依次包覆有导体屏蔽层、交联聚乙烯绝缘层、绝缘屏蔽层、金属屏蔽层、隔离层，包覆隔离层后的三根绝缘线芯截面呈品字形设置构成缆芯，缆芯外包覆有防护层，防护层由内到外依次设有静电屏蔽层、低烟无卤阻燃内护套、镀锌钢丝编织构成的铠装层和低烟无卤阻燃外护套层。本实用新型结构设计合理，通过防护层的特殊结构设计，有效地解决了中压（8.7/10kV）变频电机或变频器的主回路电力电缆在传输电能时产生的方波和高次谐波不外泄得的问题。
The utility model discloses a medium voltage (8.7/10kV) frequency conversion power cable, which comprises three conductors. The three conductors are a plurality of copper wires twisted and pressed tightly to form a circular tightly pressed copper conductor. The three conductors are coated with conductors in turn. Shielding layer, cross-linked polyethylene insulating layer, insulating shielding layer, metal shielding layer, isolation layer, the cross-section of the three insulated wire cores after covering the isolation layer is arranged in a zigzag shape to form a cable core, and the cable core is covered with a protective layer for protection. The layers are sequentially provided with an electrostatic shielding layer, a low-smoke, halogen-free, flame-retardant inner sheath, an armor layer composed of galvanized steel wire braids, and a low-smoke, halogen-free, and flame-retardant outer sheath from the inside to the outside. The utility model has a reasonable structural design, and through the special structural design of the protective layer, it effectively solves the problem of the square wave and high-order harmonics generated by the main circuit power cable of the medium voltage (8.7/10kV) frequency conversion motor or frequency converter when transmitting electric energy. leaked problem.
Description
技术领域：Technical field:
本实用新型涉及电力电缆，尤其涉及一种中压（8.7/10kV）变频电力电缆。 The utility model relates to a power cable, in particular to a medium voltage (8.7/10kV) frequency conversion power cable.
背景技术：Background technique:
随着工业用电负荷增大和大型工矿企业自动化程度不断提高，低碳环保、节能降耗成为主旋律的今天，大功率变频器和变频电机以及各种精密仪器的大量使用，连接变频器或变频电机的主回路电力电缆在传输电能的过程中产生方波和高次谐波，从而影响其它精密仪器正常工作。 With the increase of industrial power load and the continuous improvement of automation in large-scale industrial and mining enterprises, low-carbon environmental protection, energy saving and consumption reduction have become the main theme today. High-power frequency converters and variable frequency motors and various precision instruments are widely used. Connecting frequency converters or variable frequency motors The main circuit power cable of the main circuit generates square waves and high-order harmonics in the process of transmitting electric energy, which affects the normal operation of other precision instruments.
为了避免方波和高次谐波对其它精密仪器的影响，就要求电力电缆在传输电能时产生的方波和高次谐波不能外泄，传统的电力电缆无法做到这一点。 In order to avoid the influence of square waves and high-order harmonics on other precision instruments, it is required that the square waves and high-order harmonics generated by the power cable during the transmission of electric energy cannot be leaked, and traditional power cables cannot do this.
实用新型内容：Utility model content:
本实用新型的目的是提供一种中压（8.7/10kV）变频电力电缆，结构设计合理，有效地解决了中压变频电机或变频器的主回路电力电缆在传输电能时产生的方波和高次谐波不外泄得的问题。 The purpose of this utility model is to provide a medium-voltage (8.7/10kV) frequency conversion power cable, which has a reasonable structural design and effectively solves the problem of square waves and high voltage generated by the main circuit power cable of a medium-voltage frequency conversion motor or frequency converter when transmitting electric energy. The subharmonic does not leak out.
本实用新型的技术方案如下： The technical scheme of the utility model is as follows:
所述的中压（8.7/10kV）变频电力电缆，包括三根导体，其特征在于：所述的三根导体为多根铜线经绞合紧压成圆形紧压铜导体，三根导体外依次包覆有导体屏蔽层、交联聚乙烯绝缘层、绝缘屏蔽层、金属屏蔽层、隔离层，包覆隔离层后的三根绝缘线芯截面呈品字形设置构成缆芯，缆芯外包覆有防护层，防护层由内到外依次设有静电屏蔽层、低烟无卤阻燃内护套、镀锌钢丝缠绕铠装层和低烟无卤阻燃外护套层。 The medium-voltage (8.7/10kV) variable frequency power cable includes three conductors, which are characterized in that: the three conductors are multiple copper wires twisted and compacted into a circular compact copper conductor, and the three conductors are wrapped in turn Covered with conductor shielding layer, cross-linked polyethylene insulating layer, insulating shielding layer, metal shielding layer, and isolation layer, the cross-section of the three insulated wire cores after covering the isolation layer is arranged in a square shape to form a cable core, and the cable core is covered with a protective layer. The protective layer is sequentially provided with an electrostatic shielding layer, a low-smoke, halogen-free, flame-retardant inner sheath, a galvanized steel wire wound armor layer, and a low-smoke, halogen-free, flame-retardant outer sheath from the inside to the outside.
所述的中压（8.7/10kV）变频电力电缆，其特征在于：所述的金属屏蔽层采用铜丝缠绕构成。 The medium voltage (8.7/10kV) frequency conversion power cable is characterized in that: the metal shielding layer is made of copper wire winding.
本实用新型的优点是： The utility model has the advantages of:
1、将金属屏蔽层改为铜丝缠绕屏蔽结构，并可以根据电缆的故障电流确定缠绕铜丝的截面积，既能满足高压电缆均匀电场和接地要求，又能起静电屏蔽作用，使电缆在变频供电工程中电场不外泄以改善供电品质。 1. Change the metal shielding layer to a copper wire winding shielding structure, and the cross-sectional area of the winding copper wire can be determined according to the fault current of the cable, which can not only meet the uniform electric field and grounding requirements of the high-voltage cable, but also play the role of electrostatic shielding, so that the cable In the frequency conversion power supply project, the electric field is not leaked to improve the quality of power supply.
2、在铜丝缠绕屏蔽外增设一层隔离层，使起静电屏蔽作用时相互不影响，结构更稳定。 2. A layer of isolation layer is added outside the copper wire winding shielding, so that the electrostatic shielding function does not affect each other and the structure is more stable.
3、在缆芯外设置静电屏蔽层，使电缆在变频供电工程中电场不外泄。 3. Set an electrostatic shielding layer outside the cable core to prevent the electric field from leaking out during the frequency conversion power supply project.
4、在缆芯的低烟无卤内护套外设置一层镀锌钢丝缠绕铠装层，既满足中压电缆的铠装的需要，又能起静磁屏蔽作用，使电缆在变频供电工程中磁场不外泄，使变频器或变频电机在工作时产生的方波和高次谐波控制在电缆内部，减少对外部精密仪器的影响。 4. There is a layer of galvanized steel wire winding armor layer outside the low-smoke and halogen-free inner sheath of the cable core, which not only meets the armoring needs of medium-voltage cables, but also acts as a static magnetic shield, so that the cables can be used in frequency conversion power supply projects. The medium magnetic field does not leak out, so that the square wave and high-order harmonics generated by the frequency converter or variable frequency motor are controlled inside the cable, reducing the impact on external precision instruments.
附图说明：Description of drawings:
图1为本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
具体实施方式：Detailed ways:
参见图1： See Figure 1:
中压（8.7/10kV）变频电力电缆，包括三根导体1，三根导体1为多根铜线经绞合紧压成圆形紧压铜导体，三根导体1外依次包覆有导体屏蔽层2、交联聚乙烯绝缘层3、绝缘屏蔽层4、金属屏蔽层5、隔离层6，包覆隔离层6后的三根绝缘线芯截面呈品字形设置构成缆芯，缆芯外包覆有防护层，防护层由内到外依次设有静电屏蔽层7、低烟无卤阻燃内护套层8、镀锌钢丝缠绕铠装层9和低烟无卤阻燃外护套层10。
Medium voltage (8.7/10kV) frequency conversion power cable, including three
金属屏蔽层5采用铜丝缠绕屏蔽，并曾设隔离层6使起静电屏蔽作用时相互不影响，结构更稳定；缆芯外设有静电屏蔽层7，使电缆在变频供电工程中电场不外泄。缆芯外镀锌钢丝缠绕铠装层9构成静电屏蔽层和铠装层，既满足中压电缆的铠装的需要，又能起静磁屏蔽作用，使电缆在变频供电工程中磁场不外泄。
The
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320018484.3U CN203103001U (en) | 2013-01-15 | 2013-01-15 | A medium voltage (8.7/10kV) variable frequency power cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320018484.3U CN203103001U (en) | 2013-01-15 | 2013-01-15 | A medium voltage (8.7/10kV) variable frequency power cable |
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| CN203103001U true CN203103001U (en) | 2013-07-31 |
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| CN201320018484.3U Expired - Fee Related CN203103001U (en) | 2013-01-15 | 2013-01-15 | A medium voltage (8.7/10kV) variable frequency power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120277A (en) * | 2019-05-23 | 2019-08-13 | 安徽新特华宇电缆有限公司 | A kind of ocean engineering medium voltage variable frequency power cable and its manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120277A (en) * | 2019-05-23 | 2019-08-13 | 安徽新特华宇电缆有限公司 | A kind of ocean engineering medium voltage variable frequency power cable and its manufacturing method |
| CN110120277B (en) * | 2019-05-23 | 2024-03-29 | 安徽新特华宇电缆有限公司 | Medium-voltage variable-frequency power cable for ocean engineering and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20210115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |