CN105810297A - High-performance dual-core photovoltaic cable resistant to tensile and compression - Google Patents
High-performance dual-core photovoltaic cable resistant to tensile and compression Download PDFInfo
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- 238000007906 compression Methods 0.000 title claims abstract description 15
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- 239000000463 material Substances 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 10
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- 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 description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000003063 flame retardant Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004719 irradiation crosslinked polyethylene Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 description 5
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- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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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
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
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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
- H01B7/189—Radial force absorbing layers providing a cushioning effect
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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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
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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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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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
- H01B7/29—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
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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
本发明公开了一种高性能抗拉抗压双芯光伏电缆，其特征在于：包括缆芯、铠装层和护套层。缆芯由两根线芯构成，内衬层设置在缆芯的外周，铠装层包覆在内衬层的外周，护套层挤包在铠装层的外周。线芯包括加强芯、导体层和绝缘层。导体层包覆在加强芯的外周，绝缘层挤包在导体层的外周。本发明具有耐高低温性能好，绝缘性能高，抗拉抗压性能好，重量轻的特性。
The invention discloses a high-performance tensile and compression double-core photovoltaic cable, which is characterized in that it includes a cable core, an armor layer and a sheath layer. The cable core is composed of two wire cores, the inner lining is arranged on the outer periphery of the cable core, the armor layer covers the outer periphery of the inner lining, and the sheath layer is extruded on the outer periphery of the armor layer. The wire core includes a reinforcing core, a conductor layer and an insulating layer. The conductor layer is wrapped on the outer periphery of the reinforcing core, and the insulating layer is extruded on the outer periphery of the conductor layer. The invention has the characteristics of good high and low temperature resistance, high insulation performance, good tensile and compression resistance, and light weight.
Description
技术领域technical field
本发明涉及电缆技术领域，尤其涉及一种高性能抗拉抗压双芯光伏电缆。The invention relates to the technical field of cables, in particular to a high-performance tensile and compression double-core photovoltaic cable.
背景技术Background technique
目前，用于光伏发电站的光伏发电板阵经组串后再采用单芯无铠装专用光伏电缆进行连接进入汇流箱，这些起汇流作用的光伏电缆在导体外面只有一层绝缘和护套，其在连接时都是直接在土地里面敷设，没有采取任务防护措施，即使有些采用穿管的方式，其敷设成本也是非常高的，没有铠装保护的电缆如果直接土埋，由于敷设在地下，电缆承受的压力较大，极易受到外部力量损坏，更严重的会造成短路起火。同时，设置在地下的电缆所处的环境潮湿，容易使电缆被腐蚀而损坏。At present, the photovoltaic power generation panel arrays used in photovoltaic power stations are connected to the combiner box by single-core unarmored special photovoltaic cables after being assembled in strings. These photovoltaic cables for confluence have only one layer of insulation and sheath outside the conductors. When they are connected, they are laid directly in the ground without taking protective measures. Even if some of them use pipes, the laying cost is very high. If the cables without armor protection are directly buried in the ground, because they are laid underground, The cable bears high pressure and is easily damaged by external forces, and in severe cases, it will cause a short circuit and fire. At the same time, the environment where the cables installed underground is humid, and the cables are easily corroded and damaged.
发明内容Contents of the invention
基于背景技术存在的技术问题，本发明提出了一种高性能抗拉抗压双芯光伏电缆。Based on the technical problems existing in the background technology, the present invention proposes a high-performance tensile and compressive double-core photovoltaic cable.
本发明提出的一种高性能抗拉抗压双芯光伏电缆，包括缆芯、铠装层和护套层；A high-performance tensile and compression double-core photovoltaic cable proposed by the present invention includes a cable core, an armor layer and a sheath layer;
缆芯由两根线芯构成，内衬层设置在缆芯的外周，铠装层包覆在内衬层的外周，护套层挤包在铠装层的外周；The cable core is composed of two wire cores, the inner lining is arranged on the outer periphery of the cable core, the armor layer covers the outer periphery of the inner lining, and the sheath layer is extruded on the outer periphery of the armor layer;
线芯包括加强芯、导体层和绝缘层；导体层包覆在加强芯的外周，绝缘层挤包在导体层的外周。The wire core includes a reinforcement core, a conductor layer and an insulation layer; the conductor layer is covered on the periphery of the reinforcement core, and the insulation layer is extruded on the periphery of the conductor layer.
优选的，加强芯为外周镀有锡层的钢丝。Preferably, the reinforcing core is a steel wire coated with a tin layer.
优选的，导体层由铜丝绕包在加强芯的外周形成。Preferably, the conductor layer is formed by wrapping copper wire around the outer periphery of the reinforcing core.
优选的，所述的铜丝为第二类镀锡无氧铜导体。Preferably, the copper wire is the second type tinned oxygen-free copper conductor.
优选的，缆芯由线芯绞合形成。Preferably, the cable core is formed by twisting wire cores.
优选的，绝缘层由辐照交联聚乙烯材料挤包在导体层的外周形成。Preferably, the insulating layer is formed by extruding radiation cross-linked polyethylene material on the outer periphery of the conductor layer.
优选的，内衬层由125℃辐照交联弹性体材料制成。Preferably, the inner lining layer is made of 125°C radiation cross-linked elastomer material.
优选的，铠装层由铝合金材料制成。Preferably, the armor layer is made of aluminum alloy.
优选的，铠装层由镀锡铝丝绕包在内衬层的外周形成。Preferably, the armor layer is formed by wrapping tinned aluminum wire around the outer periphery of the inner liner.
优选的，护套层由125℃辐照交联无卤低烟阻燃弹性体材料挤包在铠装层的外周形成。Preferably, the sheath layer is formed by extruding and wrapping the outer periphery of the armor layer with a 125°C radiation-crosslinked halogen-free low-smoke flame-retardant elastomer material.
与现有技术相比，本发明有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
本发明提出的一种高性能抗拉抗压双芯光伏电缆，通过在线芯内设置由钢丝制成的加强芯，能够提高电缆的抗拉性能。在加强芯的外周及导体丝的外周镀锡，可以防止钢和铜之间的电化学腐蚀。A high-performance tensile and compressive double-core photovoltaic cable proposed by the present invention can improve the tensile performance of the cable by arranging a reinforcing core made of steel wire in the cable core. Tin plating on the outer periphery of the reinforcing core and the outer periphery of the conductor wire can prevent electrochemical corrosion between steel and copper.
绝缘层设置在导体层的外周，采用125℃直流电缆专用辐照交联聚乙烯挤包在导体层的外周形成，通过挤包的方式，可以将辐照交联聚乙烯材料嵌入到导体丝之间的缝隙中，从而提高线芯的圆整度，由于辐照交联聚乙烯具有较强的抗空间电荷能性和较高的耐压性能，能够提高电缆的抗压能力。The insulating layer is arranged on the outer periphery of the conductor layer, and is formed by extruding and wrapping irradiated cross-linked polyethylene special for DC cables at 125°C on the outer periphery of the conductor layer. By extruding, the irradiated cross-linked polyethylene material can be embedded in the conductor wire In the gap between them, thereby improving the roundness of the core, because the radiation cross-linked polyethylene has strong anti-space charge performance and high pressure resistance performance, it can improve the compression resistance of the cable.
内衬层设置在由两根线芯构成的缆芯外周，两缆芯相互绞合，能够提高电缆的弯曲性能。内衬层由125℃辐照交联弹性体材料制成，且此材料具有低烟无卤阻燃，韧性高，弹性好的特点，能够有效保证电缆在辗压过程中绝缘不受伤害，起到抗压缓冲作用。The inner liner is arranged on the outer periphery of the cable core composed of two wire cores, and the two cable cores are twisted with each other, which can improve the bending performance of the cable. The inner liner is made of 125°C radiation cross-linked elastomer material, and this material has the characteristics of low-smoke, halogen-free, flame-retardant, high toughness, and good elasticity, which can effectively ensure that the insulation of the cable is not damaged during the rolling process, and the to the anti-stress buffering effect.
铠装层设置在内衬层的外周，且由于铠装层采用高强度铝合金材料，此材料具有密度小，重量轻，强度高的特点，采用此材料铠装能够大大提高电缆的抗压性能，降低电缆的重量和电缆的铠装加工难度。同时，在铠装层的外周镀有锡，如此，能够起到防腐蚀的作用。The armor layer is set on the outer periphery of the inner lining layer, and because the armor layer is made of high-strength aluminum alloy material, this material has the characteristics of low density, light weight and high strength. Using this material armor can greatly improve the compressive performance of the cable , reduce the weight of the cable and the difficulty of cable armoring processing. At the same time, tin is plated on the outer periphery of the armor layer, so that it can play the role of anti-corrosion.
电缆套采用125℃辐照交联无卤低烟阻燃弹性体材料，此材料具有弹性好，耐磨性高，抗压性能高，耐高低温性能好的特性。能够提高电缆的抗压能力，并增加其耐磨性能。The cable sheath is made of 125°C irradiation cross-linked halogen-free low-smoke flame-retardant elastomer material, which has the characteristics of good elasticity, high wear resistance, high compression resistance, and good high and low temperature resistance. It can improve the compressive capacity of the cable and increase its wear resistance.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为本发明所公开的线芯的结构示意图。Fig. 2 is a schematic structural view of the wire core disclosed in the present invention.
具体实施方式detailed description
为使本发明实施例的目的、技术方案和优点更加清楚，下面结合附图对具体实施例进行详细描述。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, specific embodiments will be described in detail below in conjunction with the accompanying drawings.
如图1所示，图1为本发明提出的一种高性能抗拉抗压双芯光伏电缆，包括缆芯、铠装层2和护套层3。As shown in FIG. 1 , FIG. 1 is a high-performance tensile and compression double-core photovoltaic cable proposed by the present invention, including a cable core, an armor layer 2 and a sheath layer 3 .
缆芯由两根线芯4构成，具体实施时，缆芯由线芯绞合形成。内衬层1设置在缆芯的外周，具体实施时，内衬层1由125℃辐照交联弹性体材料制成。125℃辐照交联弹性体材料具有低烟无卤阻燃，韧性高，弹性好的特点，能够有效保证电缆在辗压过程中绝缘不受伤害，起到抗压缓冲作用。铠装层2包覆在内衬层1的外周，具体实施时，铠装层2由铝合金材料制成，铠装层2也可由镀锡铝丝绕包在内衬层1的外周形成。高强度铝合金材料具有密度小，重量轻，强度高，耐腐蚀性强的特点，采用此材料制成的铠装层能够大大提高电缆的抗压性能，降低电缆的重量和电缆的铠装加工难度。护套层3挤包在铠装层2的外周。具体实施时，护套层3由125℃辐照交联无卤低烟阻燃弹性体材料挤包在铠装层2的外周形成。125℃辐照交联无卤低烟阻燃弹性体材料具有弹性好，耐磨性高，耐高低温性能好的特性。如此，能够提高电缆的抗压能力的耐磨性能。The cable core is composed of two wire cores 4, and during specific implementation, the cable core is formed by twisting the wire cores. The inner liner 1 is arranged on the outer periphery of the cable core. In practice, the inner liner 1 is made of a 125°C radiation cross-linked elastomer material. The 125°C irradiation cross-linked elastomer material has the characteristics of low-smoke, halogen-free, flame-retardant, high toughness, and good elasticity, which can effectively ensure that the insulation of the cable is not damaged during the rolling process, and play a role in compressive buffering. The armor layer 2 is wrapped around the outer periphery of the inner lining layer 1. In practice, the armor layer 2 is made of aluminum alloy material, and the armor layer 2 can also be formed by wrapping tinned aluminum wire around the outer periphery of the inner lining layer 1. High-strength aluminum alloy material has the characteristics of low density, light weight, high strength and strong corrosion resistance. The armor layer made of this material can greatly improve the compressive performance of the cable, reduce the weight of the cable and the armoring process of the cable difficulty. The sheath layer 3 is extruded on the outer periphery of the armor layer 2 . During specific implementation, the sheath layer 3 is formed by extruding and wrapping the outer periphery of the armor layer 2 with a 125°C radiation cross-linked halogen-free low-smoke flame-retardant elastomer material. The 125°C irradiation cross-linked halogen-free low-smoke flame-retardant elastomer material has the characteristics of good elasticity, high wear resistance, and good high and low temperature resistance. In this way, the compressive resistance and wear resistance of the cable can be improved.
如图2所示，图2为本发明所公开的线芯的结构示意图，线芯4包括加强芯401、导体层402和绝缘层403。具体实施时，加强芯401为外周镀有锡层的钢丝。导体层402包覆在加强芯401的外周，导体层402由铜丝绕包在加强芯401的外周形成。所述的铜丝为第二类镀锡无氧铜导体。绝缘层403挤包在导体层402的外周。具体实施时，绝缘层403由辐照交联聚乙烯材料挤包在导体层402的外周形成。由于辐照交联聚乙烯材料具有绝缘性能高，耐低温-40℃、高温125℃的性能，密度小，重量轻，同时此材料为直流专用绝缘料，抗空间电荷能性好，耐压性能高的特性。As shown in FIG. 2 , which is a schematic structural view of the wire core disclosed in the present invention, the wire core 4 includes a reinforcing core 401 , a conductor layer 402 and an insulating layer 403 . During specific implementation, the reinforcing core 401 is a steel wire with a tin-coated outer periphery. The conductor layer 402 is wrapped around the outer circumference of the reinforcing core 401 , and the conductive layer 402 is formed by wrapping copper wire around the outer circumference of the reinforcing core 401 . The copper wire is the second type tinned oxygen-free copper conductor. The insulation layer 403 is extruded on the outer periphery of the conductor layer 402 . In a specific implementation, the insulating layer 403 is formed by extruding radiation cross-linked polyethylene material on the outer periphery of the conductor layer 402 . Because the irradiation cross-linked polyethylene material has high insulation performance, low temperature resistance to -40°C, high temperature 125°C performance, low density, light weight, and this material is a DC special insulation material, with good space charge resistance and voltage resistance. high characteristics.
线芯4采用第2种镀锡铜导体，镀锡铜导体截面为4mm2，加强芯401采用镀锡钢丝，导体层402采用镀锡铜丝，采用1根镀锡钢丝可以增加电缆导体的抗拉性，同时在钢丝表面镀一层锡可以防止钢和铜之间电化学腐蚀。The core 4 adopts the second kind of tinned copper conductor, the cross section of the tinned copper conductor is 4mm 2 , the reinforcing core 401 adopts tinned steel wire, the conductor layer 402 adopts tinned copper wire, and the use of one tinned steel wire can increase the resistance of the cable conductor. At the same time, plating a layer of tin on the surface of the steel wire can prevent electrochemical corrosion between steel and copper.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
Claims (10)
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