CN222851153U - A corrosion-resistant and twist-resistant power cable and power transmission system - Google Patents

A corrosion-resistant and twist-resistant power cable and power transmission system Download PDF

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Publication number
CN222851153U
CN222851153U CN202421712314.XU CN202421712314U CN222851153U CN 222851153 U CN222851153 U CN 222851153U CN 202421712314 U CN202421712314 U CN 202421712314U CN 222851153 U CN222851153 U CN 222851153U
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layer
resistant
arranged outside
tape
corrosion
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连瑞琦
黄延江
赵华硕
李国祥
张晓鹏
蔡延玮
李媛
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Shandong Hualing Gable Co ltd
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Shandong Hualing Gable Co ltd
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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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Abstract

本实用新型公开的一种耐腐蚀耐扭曲电力电缆及电力输送系统，包括导体，导体的外部设置第一包带层，第一包带层外部设置共挤绝缘层，共挤绝缘层外部设置第二包带层，第二包带层外部设置编织屏蔽层，编织屏蔽层外部设置阻燃包带层，阻燃包带层外部设置外护套。具有耐低温、耐盐雾、耐臭氧、耐紫外线、耐油、耐气候性、耐扭曲、阻燃性等性能，能有效满足海上风电环境的使用要求。

The utility model discloses a corrosion-resistant and torsion-resistant power cable and a power transmission system, comprising a conductor, a first tape layer is arranged outside the conductor, a co-extruded insulating layer is arranged outside the first tape layer, a second tape layer is arranged outside the co-extruded insulating layer, a braided shielding layer is arranged outside the second tape layer, a flame-retardant tape layer is arranged outside the braided shielding layer, and an outer sheath is arranged outside the flame-retardant tape layer. The cable has the properties of low temperature resistance, salt spray resistance, ozone resistance, UV resistance, oil resistance, weather resistance, torsion resistance, flame retardancy, etc., and can effectively meet the use requirements of offshore wind power environment.

Description

Corrosion-resistant and torsion-resistant power cable and power transmission system
Technical Field
The utility model relates to the technical field of cables, in particular to a corrosion-resistant and torsion-resistant power cable and a power transmission system.
Background
The rapid development of the wind power generation industry has prompted the need for cables for wind power generation. Such as flexible wires, control cables, data cables for use in cabins, wire harnesses, twist resistant power cables for use in towers, etc. Because the wind power plant has a severe environment, the service life of the fan is longer, and some cables also need to rotate continuously along with the fan, so that the performance requirements on the cables are very high.
Because the special use environment of wind farm is very high to its requirement, when selecting the cable, but take full account of the natural climate condition, topography, the regional characteristics of project place, like high low temperature environment, wind farm tower vibration, fire-retardant, and economic suitability, and current cable either possesses fire-retardant, or possesses resistance to torsion and wearability, still possesses good resistance to torsion on the basis of no longer possessing fire-retardant.
Disclosure of utility model
In order to solve the problems, the utility model provides a corrosion-resistant and torsion-resistant power cable and a power transmission system, which have the performances of low temperature resistance, salt fog resistance, ozone resistance, ultraviolet resistance, oil resistance, weather resistance, torsion resistance, flame retardance and the like, and can effectively meet the use requirements of offshore wind power environment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
In a first aspect, a corrosion-resistant and torsion-resistant power cable is provided, the cable comprises a conductor, a first wrapping band layer is arranged outside the conductor, a co-extrusion insulating layer is arranged outside the first wrapping band layer, a second wrapping band layer is arranged outside the co-extrusion insulating layer, a braided shielding layer is arranged outside the second wrapping band layer, a flame-retardant wrapping band layer is arranged outside the braided shielding layer, and an outer sheath is arranged outside the flame-retardant wrapping band layer.
Further, the conductor is formed by twisting a plurality of tinned copper wires.
Further, the first wrapping band layer is wrapped outside the conductor by adopting a semi-conductive wrapping band;
the second wrapping tape layer is wrapped outside the co-extrusion insulating layer by a semi-conductive wrapping tape.
Further, the thickness of the first wrapping tape layer is more than or equal to 0.1mm and less than or equal to 0.14mm;
The thickness of the second tape layer is more than or equal to 0.1mm and less than or equal to 0.14mm.
Further, the co-extrusion insulating layer comprises a conductor semi-conductive shielding layer arranged outside the first wrapping band layer, an insulating layer arranged outside the conductor semi-conductive shielding layer and an insulating semi-conductive shielding layer arranged outside the insulating layer.
Further, the semiconductor semi-conductive shielding layer and the insulating semi-conductive shielding layer are both semi-conductive ethylene propylene rubber layers, and the insulating layer is an ethylene propylene rubber insulating layer.
Further, the braided shielding layer adopts a tinned copper wire and polyester yarn mixed braided structure.
Further, the flame-retardant wrapping tape layer is wrapped outside the woven shielding layer by adopting a flame-retardant glass cloth tape.
Further, the outer sheath is a chlorinated polyethylene sheath.
In a second aspect, an electrical power transmission system is provided, comprising a corrosion-resistant and torsion-resistant power cable as proposed in the first aspect.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the corrosion-resistant and torsion-resistant power cable, the first wrapping band layer and the second wrapping band layer are arranged, so that the cable has good bending performance, the flame-retardant wrapping band layer is arranged, the flame-retardant performance is good, and the outer sheath is arranged, so that the cable has good heat-resistant, oxygen-resistant, aging-resistant, acid-base-resistant and oil-resistant performances.
2. The co-extrusion insulating layer adopts a three-layer co-extrusion insulating technology, improves the cable insulation, ensures reliable electrical performance, and has excellent heat aging resistance, cold resistance, ozone resistance and weather resistance, and more stable use process.
3. The conductor is a stranded soft tinned copper wire conductor and has good flexibility.
4. The semi-conductive shielding layer and the insulating semi-conductive shielding layer of the utility model are semi-conductive ethylene propylene rubber layers, the insulating layer is an ethylene propylene rubber insulating layer, the thermal aging performance of the semi-conductive ethylene propylene rubber mixture is equivalent to that of the insulating layer, the effect of uniform electric field is achieved, the partial discharge caused by gaps between the insulating layer and the conductor and between the insulating layer and the braiding shielding layer is prevented, and the insulating ethylene propylene rubber mixture has better chemical stability, excellent thermal aging resistance, excellent cold resistance, excellent electrical insulation performance, ozone resistance and weather resistance, and no toxicity and no odor.
5. The flame-retardant glass cloth tape is used for wrapping the flame-retardant wrapping tape layer outside the woven shielding layer, the flame-retardant wrapping tape layer can absorb a large amount of heat when the flame-retardant glass cloth tape burns at 200-600 ℃, flame spreading is prevented, the insulating layer is protected, smoke generated during passive combustion is small, visibility is good, the dangerous degree of fire is greatly reduced, environmental pollution is reduced, water is not absorbed, and moisture in the cable storage and operation process can be prevented from invading the insulating layer.
Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Fig. 1 is a schematic structural diagram of a corrosion-resistant and torsion-resistant power cable according to an embodiment.
1, A conductor; 2, a first wrapping layer, 3, a semiconductor semi-conductive shielding layer, 4, an insulating layer, 5, an insulating semi-conductive shielding layer, 6, a second wrapping layer, 7, a woven shielding layer, 8, a flame-retardant wrapping layer and 9, an outer sheath.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
In this embodiment, a corrosion-resistant and torsion-resistant power cable is proposed, as shown in fig. 1, which comprises a conductor 1, wherein a first tape layer 2 is arranged outside the conductor 1, a co-extrusion insulating layer is arranged outside the first tape layer 2, a second tape layer 6 is arranged outside the co-extrusion insulating layer, a braided shielding layer 7 is arranged outside the second tape layer 6, a flame-retardant tape layer 8 is arranged outside the braided shielding layer 7, and an outer sheath 9 is arranged outside the flame-retardant tape layer 8.
The corrosion-resistant and torsion-resistant power cable provided by the embodiment comprises a conductor 1, wherein the conductor 1 is formed by twisting a plurality of tinned copper wires.
In order to achieve the flexibility of the cable structure, the 5 th tinned soft copper conductor required by DIN VDE 0295/IEC 60228 standard is selected, and the stranding adopts a stranding and compound stranding structure to ensure the mechanical property. The cable conductor should be heat treated in advance when in use.
The first wrapping tape layer 2 is wrapped outside the conductor by adopting a semi-conductive wrapping tape, the semi-conductive wrapping tape is wrapped on the outer wall of the conductor 1, the thickness of the first wrapping tape layer 2 is defined to be more than or equal to 0.1mm and less than or equal to 0.14mm, and the bending performance of the cable is ensured.
In the corrosion-resistant and torsion-resistant power cable provided in this embodiment, the co-extrusion insulating layer disposed outside the first tape layer 2 includes three layers, the co-extrusion insulating layer includes a conductive semiconductive shielding layer 3 disposed outside the first tape layer 2, an insulating layer 4 disposed outside the conductive semiconductive shielding layer 3, and an insulating semiconductive shielding layer 5 disposed outside the insulating layer 4.
Preferably, the semi-conductive shielding layer 3 and the insulating semi-conductive shielding layer 5 are semi-conductive ethylene propylene rubber layers, and the insulating layer 4 is an ethylene propylene rubber insulating layer.
The semi-conductive ethylene propylene rubber layer is made of an ethylene propylene rubber mixture semi-conductive material, the thermal aging performance of the ethylene propylene rubber mixture semi-conductive material is equivalent to that of the combined insulating layer 4, the effect of a uniform electric field is achieved, and partial discharge caused by gaps between the insulating layer and a conductor and between the insulating layer and a metal shield is prevented.
The ethylene propylene rubber insulating layer adopts an insulating ethylene propylene rubber mixture, and the insulating ethylene propylene rubber mixture has better chemical stability, excellent heat aging resistance, excellent cold resistance, excellent electrical insulation performance, ozone resistance and weather resistance, and is nontoxic and odorless.
The semi-conductive shielding layer 3, the insulating layer 4 and the insulating semi-conductive shielding layer 5 are processed through a three-layer coextrusion process, so that the efficiency is high, the energy consumption is low, and the defects of interlayer layering, wrinkling, degumming and loose combination of a wire core and insulation between an inner shielding layer and an outer shielding layer are avoided.
The second wrapping tape layer 6 is arranged outside the insulating semi-conductive shielding layer 5, wherein the second wrapping tape layer 6 is wrapped outside the co-extrusion insulating layer by adopting a semi-conductive wrapping tape, the semi-conductive wrapping tape is wrapped after the co-extrusion insulating layer, and the thickness of the second wrapping tape layer 6 is defined to be more than or equal to 0.1mm and less than or equal to 0.14mm, so that the insulating semi-conductive shielding layer 5 can be prevented from being pricked by the woven shielding layer 7, and the bending performance of the cable is ensured.
The braided shielding layer 7 adopts a mixed braided structure of tinned copper wires and polyester yarns, and the number of the tinned copper wires is the same as that of the polyester yarn ingots, in the opposite direction, the torsion resistance of the cable is improved.
The flame-retardant wrapping tape layer 8 is wrapped outside the woven shielding layer 7, the flame-retardant wrapping tape layer 8 is wrapped outside the woven shielding layer by adopting a flame-retardant glass cloth tape, and the flame-retardant glass can absorb a large amount of heat when being burnt at 200-600 ℃ to prevent flame from spreading and protect the insulating layer.
The outer sheath 9 is extruded outside the flame-retardant wrapping band layer 8, the outer sheath 9 is a chlorinated polyethylene sheath, and the material has excellent heat and oxygen aging resistance, ozone aging resistance, acid and alkali resistance and oil resistance.
The corrosion-resistant and torsion-resistant power cable provided by the embodiment has the rated voltage of 26/35kV, has the advantages of compact structure, good stability, good performances of flame retardance, low temperature resistance, salt fog resistance, ozone resistance, ultraviolet resistance, oil resistance, weather resistance, torsion resistance and the like, and can effectively meet the service environment requirements of the corrosion-resistant and torsion-resistant power cable for offshore wind power with the rated voltage of 26/35 kV.
Example 2
In this embodiment, an electric power transmission system is provided, including a corrosion-resistant and twist-resistant electric power cable as set forth in embodiment 1.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (9)

1.一种耐腐蚀耐扭曲电力电缆，其特征在于，包括导体，导体的外部设置第一包带层，第一包带层外部设置共挤绝缘层，共挤绝缘层外部设置第二包带层，第二包带层外部设置编织屏蔽层，编织屏蔽层外部设置阻燃包带层，阻燃包带层外部设置外护套；1. A corrosion-resistant and torsion-resistant power cable, characterized in that it comprises a conductor, a first tape layer is arranged outside the conductor, a co-extruded insulating layer is arranged outside the first tape layer, a second tape layer is arranged outside the co-extruded insulating layer, a braided shielding layer is arranged outside the second tape layer, a flame-retardant tape layer is arranged outside the braided shielding layer, and an outer sheath is arranged outside the flame-retardant tape layer; 共挤绝缘层包括设置于第一包带层外部的导体半导电屏蔽层，设置于导体半导电屏蔽层外部的绝缘层，设置于绝缘层外部的绝缘半导电屏蔽层。The co-extruded insulating layer comprises a conductor semi-conductive shielding layer arranged outside the first wrapping layer, an insulating layer arranged outside the conductor semi-conductive shielding layer, and an insulating semi-conductive shielding layer arranged outside the insulating layer. 2.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，导体由多根镀锡铜丝绞合而成。2. A corrosion-resistant and torsion-resistant power cable as described in claim 1, characterized in that the conductor is formed by twisting a plurality of tinned copper wires. 3.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，第一包带层采用半导电包带绕包于导体外部；3. A corrosion-resistant and torsion-resistant power cable according to claim 1, characterized in that the first tape layer is a semi-conductive tape wrapped around the outside of the conductor; 第二包带层采用半导电包带绕包于共挤绝缘层外部。The second wrapping tape layer is wrapped around the outside of the co-extruded insulation layer with a semi-conductive wrapping tape. 4.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，第一包带层的厚度为大于等于0.1mm，小于等于0.14mm；4. A corrosion-resistant and torsion-resistant power cable according to claim 1, characterized in that the thickness of the first tape layer is greater than or equal to 0.1 mm and less than or equal to 0.14 mm; 第二包带层的厚度为大于等于0.1mm，小于等于0.14mm。The thickness of the second tape layer is greater than or equal to 0.1 mm and less than or equal to 0.14 mm. 5.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，导体半导电屏蔽层和绝缘半导电屏蔽层均为半导电乙丙橡胶层，绝缘层为乙丙橡胶绝缘层。5. A corrosion-resistant and torsion-resistant power cable as claimed in claim 1, characterized in that the conductor semi-conductive shielding layer and the insulating semi-conductive shielding layer are both semi-conductive EPDM rubber layers, and the insulating layer is an EPDM rubber insulating layer. 6.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，编织屏蔽层采用镀锡铜丝与涤纶丝混合编织结构。6. A corrosion-resistant and torsion-resistant power cable as claimed in claim 1, characterized in that the braided shielding layer adopts a mixed braided structure of tinned copper wire and polyester wire. 7.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，阻燃包带层采用阻燃玻璃布带绕包于编织屏蔽层外部。7. A corrosion-resistant and torsion-resistant power cable as claimed in claim 1, characterized in that the flame-retardant tape layer is made of flame-retardant glass cloth tape wrapped around the outside of the braided shielding layer. 8.如权利要求1所述的一种耐腐蚀耐扭曲电力电缆，其特征在于，外护套为氯化聚乙烯护套。8. A corrosion-resistant and torsion-resistant power cable as claimed in claim 1, characterized in that the outer sheath is a chlorinated polyethylene sheath. 9.一种电力输送系统，其特征在于，包括权利要求1-8任一项所述的一种耐腐蚀耐扭曲电力电缆。9. A power transmission system, characterized by comprising a corrosion-resistant and torsion-resistant power cable according to any one of claims 1 to 8.
CN202421712314.XU 2024-07-18 2024-07-18 A corrosion-resistant and twist-resistant power cable and power transmission system Active CN222851153U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202421712314.XU CN222851153U (en) 2024-07-18 2024-07-18 A corrosion-resistant and twist-resistant power cable and power transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202421712314.XU CN222851153U (en) 2024-07-18 2024-07-18 A corrosion-resistant and twist-resistant power cable and power transmission system

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CN222851153U true CN222851153U (en) 2025-05-09

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