CN205582609U - Aluminum-clad fiber-reinforced composite core for overhead conductors - Google Patents
Aluminum-clad fiber-reinforced composite core for overhead conductors Download PDFInfo
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- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002131 composite material Substances 0.000 claims description 73
- 239000012792 core layer Substances 0.000 claims description 33
- 238000005253 cladding Methods 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
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- 239000004760 aramid Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 150000001875 compounds Chemical group 0.000 abstract 8
- 239000004411 aluminium Substances 0.000 abstract 5
- 238000004519 manufacturing process Methods 0.000 description 11
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- 229920005989 resin Polymers 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
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Abstract
Description
技术领域technical field
本实用新型属于架空输电线技术领域,特别是涉及一种架空导线用铝包纤维增强复合芯。The utility model belongs to the technical field of overhead power transmission lines, in particular to an aluminum-clad fiber-reinforced composite core for overhead wires.
背景技术Background technique
本世纪初,以纤维树脂基复合芯棒(简称复合芯棒)作为加强芯替代传统的钢芯制成的复合芯,由于其利用了碳纤维质量轻、强度高、线膨胀系数小等优点,故由此制成的复合芯具有耐高温、大容量、低弧垂、低能耗、重量轻等显著特点,从而成为架空输电线领域的颠覆性产品,其在国内外输电线领域得到了大量的应用,取的了明显的技术经济效益。然而,由多根纤维经树脂包裹固化后得到的复合芯具有以下缺陷:1、复合芯长期使用后,由于表面的树脂容易老化,从而导致复合芯的寿命减少;2、复合芯配套连接金具结构复杂、成本高昂、对施工工艺要求高,成为了复合芯大规模应用的关键阻力点;3、复合芯在制造的过程中,包裹在多根纤维芯层外周的树脂需要固化,而树脂固化消耗的时间较长,从而导致复合芯的生产线要消耗较多的时间,其生产效率低下。At the beginning of this century, the composite core made of fiber resin-based composite mandrel (composite mandrel for short) was used as the reinforcement core to replace the traditional steel core. The resulting composite core has remarkable characteristics such as high temperature resistance, large capacity, low sag, low energy consumption, light weight, etc., thus becoming a subversive product in the field of overhead transmission lines, and has been widely used in the field of transmission lines at home and abroad. , and achieved obvious technical and economic benefits. However, the composite core obtained by wrapping and curing multiple fibers with resin has the following defects: 1. After the composite core is used for a long time, the resin on the surface is easy to age, which leads to a reduction in the life of the composite core; 2. The composite core is equipped with a connecting hardware structure Complexity, high cost, and high requirements for construction technology have become the key resistance points for large-scale application of composite cores; 3. During the manufacturing process of composite cores, the resin wrapped around the outer periphery of multiple fiber core layers needs to be cured, and resin curing consumes The time is longer, which leads to the production line of the composite core to consume more time, and its production efficiency is low.
针对上述问题,申请号为200810201843.2的中国发明专利申请说明书公开了一种增强电缆芯,其至少包括一纤维增强芯和一金属护套,该金属护套包覆该纤维增强芯;同时,其还公开了金属护套的材料为电工铝或不锈钢或二者复合。引起,其通过使用铝或不锈钢或二者复合代替传统的复合芯的树脂包裹层,既保留了碳纤维强度高、重量轻等优势,又克服树脂包裹层的长期老化所引起的复合芯使用寿命短的问题。但是,由于复合芯采用金属护套,因此,金属护套的体积含量和金属护套的厚度都会对复合芯的抗弯曲性能、整体强度性能产生一定的影响,若金属护套的体积含量、厚度设计的不合理,则直接导致复合芯的寿命大大减少,不能满足架空导线的使用要求。In view of the above problems, the Chinese invention patent application specification with application number 200810201843.2 discloses a reinforced cable core, which at least includes a fiber reinforced core and a metal sheath, and the metal sheath covers the fiber reinforced core; meanwhile, it also It is disclosed that the material of the metal sheath is electrical aluminum or stainless steel or a combination of the two. As a result, it uses aluminum or stainless steel or a combination of the two to replace the resin coating layer of the traditional composite core, which not only retains the advantages of high strength and light weight of carbon fiber, but also overcomes the short service life of the composite core caused by the long-term aging of the resin coating layer. The problem. However, since the composite core uses a metal sheath, the volume content of the metal sheath and the thickness of the metal sheath will have a certain impact on the bending resistance and overall strength of the composite core. If the volume content and thickness of the metal sheath If the design is unreasonable, the service life of the composite core will be greatly reduced, which cannot meet the requirements for the use of overhead wires.
实用新型内容Utility model content
鉴于以上所述现有技术的缺点,本实用新型的目的在于提供一种架空导线用铝包纤维增强复合芯,其具有强度高、弯曲性能好等特点,符合目前架空导线的使用要求。In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an aluminum-clad fiber-reinforced composite core for overhead wires, which has the characteristics of high strength and good bending performance, and meets the current use requirements of overhead wires.
为实现上述目的,本实用新型提供一种架空导线用铝包纤维增强复合芯,包括至少一根复合芯,所述复合芯包括由多根纤维构成的纤维芯层和包裹在纤维芯层外周的铝包裹层,每根复合芯中,纤维的体积含量为50%~70%,纤维芯层的直径为d,铝包裹层的厚度为h,复合芯的直径为D,纤维的体积含量为w,则纤维芯层的直径d=(D2×w/0.8)1/2,铝包裹层的厚度h=[D-d]/2。In order to achieve the above purpose, the utility model provides an aluminum-clad fiber-reinforced composite core for overhead wires, which includes at least one composite core, and the composite core includes a fiber core layer composed of a plurality of fibers and a fiber core layer wrapped around the fiber core layer Aluminum cladding layer, in each composite core, the volume content of fiber is 50% to 70%, the diameter of the fiber core layer is d, the thickness of the aluminum cladding layer is h, the diameter of the composite core is D, and the volume content of the fiber is w , then the diameter of the fiber core layer d=(D 2 ×w/0.8) 1/2 , and the thickness of the aluminum cladding layer h=[Dd]/2.
进一步地,所述纤维芯层由至少一种纤维构成。Further, the fiber core layer is composed of at least one fiber.
优选地,所述纤维的强度为2500MPa~5000MPa。Preferably, the strength of the fiber is 2500MPa-5000MPa.
进一步地,所述纤维为碳纤维、玻璃纤维、玄武岩纤维、超高分子量聚乙烯纤维、芳族聚酰胺纤维中的一种或多种。Further, the fiber is one or more of carbon fiber, glass fiber, basalt fiber, ultra-high molecular weight polyethylene fiber, and aramid fiber.
进一步地,所述复合芯有多根,多根复合芯相互绞合。Further, there are multiple composite cores, and the multiple composite cores are twisted with each other.
优选地,所述复合芯的直径为2.00mm~11.0mm。Preferably, the diameter of the composite core is 2.00mm-11.0mm.
优选地,当复合芯有多根时,所述复合芯的直径为2.00mm~5.0mm。Preferably, when there are multiple composite cores, the diameter of the composite cores is 2.00 mm to 5.0 mm.
如上所述,本实用新型涉及的架空导线用铝包纤维增强复合芯,具有以下有益效果:As mentioned above, the aluminum-clad fiber-reinforced composite core for overhead wires involved in the utility model has the following beneficial effects:
本申请中由纤维芯层和铝包裹层构成的复合芯在保证具有强度高、质量轻、使用寿命长等优点的前提下,通过严格规定纤维在复合芯中的体积含量、以及纤维芯层的直径和铝包裹层的厚度来提高复合芯的综合强度和抗弯曲能力,以使复合芯具有较好的综合性能,从而满足架空导线的使用要求。In this application, the composite core composed of the fiber core layer and the aluminum cladding layer is guaranteed to have the advantages of high strength, light weight, and long service life. The diameter and the thickness of the aluminum cladding layer are used to improve the comprehensive strength and bending resistance of the composite core, so that the composite core has better comprehensive performance, so as to meet the use requirements of overhead conductors.
附图说明Description of drawings
图1为本申请中单根复合芯的结构示意图。Fig. 1 is a schematic structural view of a single composite core in the present application.
图2为本申请中多根复合芯绞合后的结构示意图。Fig. 2 is a structural schematic diagram of multiple composite cores stranded in the present application.
图3为本申请中架空导线用铝包纤维增强复合芯的制造方法的工艺流程图。Fig. 3 is a process flow chart of the manufacturing method of the aluminum-clad fiber-reinforced composite core for overhead conductors in the present application.
元件标号说明Component designation description
1 复合芯1 composite core
11 纤维芯层11 fiber core
12 铝包裹层12 aluminum cladding
具体实施方式detailed description
以下由特定的具体实施例说明本实用新型的实施方式,熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本实用新型的其他优点及功效。The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.
须知,本说明书所附图式所绘示的结构、比例、大小等,均仅用以配合说明书所揭示的内容,以供熟悉此技术的人士了解与阅读,并非用以限定本实用新型可实施的限定条件,故不具技术上的实质意义,任何结构的修饰、比例关系的改变或大小的调整,在不影响本实用新型所能产生的功效及所能达成的目的下,均应仍落在本实用新型所揭示的技术内容得能涵盖的范围内。同时,本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语,亦仅为便于叙述的明了,而非用以限定本实用新型可实施的范围,其相对关系的改变或调整,在无实质变更技术内容下,当亦视为本实用新型可实施的范畴。It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.
如图1所示,本申请提供一种架空导线用铝包纤维增强复合芯,包括至少一根复合芯1,所述复合芯1包括由多根纤维构成的纤维芯层11和包裹在纤维芯层11外周的铝包裹层12,每根复合芯1中,纤维的体积含量为50%~70%;所述纤维芯层11的直径为d,铝包裹层12的厚度为h,复合芯1的直径为D,纤维的体积含量为w,则纤维芯层11的直径d=(D2×w/0.8)1/2,铝包裹层12的厚度h=[D-d]/2。As shown in Figure 1, the present application provides an aluminum-clad fiber-reinforced composite core for aerial conductors, including at least one composite core 1, the composite core 1 includes a fiber core layer 11 composed of a plurality of fibers and wrapped in a fiber core The aluminum cladding layer 12 on the outer periphery of the layer 11, in each composite core 1, the volume content of fibers is 50% to 70%; the diameter of the fiber core layer 11 is d, the thickness of the aluminum cladding layer 12 is h, and the composite core 1 The diameter of the fiber is D, the volume content of the fiber is w, then the diameter of the fiber core layer 11 is d=(D 2 ×w/0.8) 1/2 , and the thickness of the aluminum cladding layer 12 is h=[Dd]/2.
上述复合芯1由位于内层的纤维芯层11和位于外层的铝包裹层12构成,因此,复合芯1具有强度高、质量轻、使用寿命长等优点,克服了传统的复合芯1因采用树脂包裹层而产生的长期老化、寿命缩短的弊端。特别地,本申请还通过严格规定纤维在复合芯1中的体积含量、以及纤维芯层11的直径d和铝包裹层12的厚度h来提高复合芯1的综合强度和抗弯曲能力,以使复合芯1具有较好的综合性能,从而满足架空导线的使用要求。The above-mentioned composite core 1 is composed of a fiber core layer 11 located in the inner layer and an aluminum cladding layer 12 located in the outer layer. Therefore, the composite core 1 has the advantages of high strength, light weight, and long service life, and overcomes the disadvantages of the traditional composite core 1. The disadvantages of long-term aging and shortened life caused by the use of resin coating. In particular, the present application also improves the overall strength and bending resistance of the composite core 1 by strictly specifying the volume content of fibers in the composite core 1, the diameter d of the fiber core layer 11, and the thickness h of the aluminum cladding layer 12, so that The composite core 1 has better overall performance, thus meeting the requirements for the use of overhead wires.
优选地,所述纤维芯层11由至少一种纤维构成;所述纤维为碳纤维、玻璃纤维、玄武岩纤维、超高分子量聚乙烯纤维、芳族聚酰胺纤维中的一种或多种。另外,所述复合芯1可以为一根,也可以为多根;当复合芯1有多根,如图2所示,多根复合芯1相互绞合在一起,进而使绞合后制成的复合芯1具有较好的抗侧压性能、抗弯曲性能和高强度性能。Preferably, the fiber core layer 11 is composed of at least one fiber; the fiber is one or more of carbon fiber, glass fiber, basalt fiber, ultra-high molecular weight polyethylene fiber, and aramid fiber. In addition, the composite core 1 can be one or multiple; when there are multiple composite cores 1, as shown in Figure 2, the multiple composite cores 1 are twisted together, and then made after twisting. The composite core 1 has good lateral compression resistance, bending resistance and high strength.
另外,当复合芯1为一根时,复合芯1的直径范围为5.00mm~11.0mm,复合芯1内的纤维的体积含量为50%~70%,构成纤维芯层11的纤维的强度范围为2500MPa~5000MPa。当复合芯1为多根、且相互绞合时,单根复合芯1的直径范围为2.00mm~5.0mm,复合芯1内的纤维的体积含量为50%~70%,构成纤维芯层11的纤维的强度范围为2500MPa~5000MPa。In addition, when the composite core 1 is one, the diameter of the composite core 1 ranges from 5.00 mm to 11.0 mm, the volume content of the fibers in the composite core 1 is 50% to 70%, and the strength of the fibers constituting the fiber core layer 11 ranges from 5.00 mm to 11.0 mm. 2500MPa ~ 5000MPa. When multiple composite cores 1 are twisted together, the diameter of a single composite core 1 ranges from 2.00 mm to 5.0 mm, and the volume content of fibers in the composite core 1 is 50% to 70%, constituting the fiber core layer 11 The strength of the fiber ranges from 2500MPa to 5000MPa.
本申请还提供一种架空导线用铝包纤维增强复合芯的制造方法,如图3所示,所述制造方法依次包括以下步骤:The present application also provides a method for manufacturing an aluminum-clad fiber-reinforced composite core for overhead conductors, as shown in Figure 3, the manufacturing method includes the following steps in sequence:
A、放纱:将多根纤维从放线架放出;A. Yarn release: release multiple fibers from the pay-off frame;
B、浸胶成束:将多根纤维放置在盛放有树脂的浸胶槽中,进行充分浸胶,因此,多根纤维粘合、从而形成纤维束,纤维束的直径应满足所制备的复合芯对其提出的要求;B. Dipping into bundles: Place multiple fibers in a dipping tank filled with resin and fully dip into them. Therefore, multiple fibers are bonded to form fiber bundles. The diameter of the fiber bundles should meet the prepared requirements. Composite core requirements;
C、固化:将所述纤维束依次进行高温拉挤模和固化,得到固化好的纤维芯层11;该固化时间非常短,且对纤维芯层11的固化度和纤维芯层11最终的表面效果都没有要求;C. Curing: The fiber bundles are subjected to high-temperature pultrusion and curing sequentially to obtain a cured fiber core layer 11; the curing time is very short, and it is not necessary for the degree of curing of the fiber core layer 11 and the final surface of the fiber core layer 11 None of the effects are required;
D、包覆:将铝杆送入连续挤压包覆机,同时使步骤C中固化好的纤维芯层11通过连续挤压包覆机,使用连续挤压包覆机在纤维芯层11的外周均匀覆盖一层铝,从而得到复合芯1;D, cladding: the aluminum rod is sent into the continuous extrusion cladding machine, and the fiber core layer 11 solidified in step C is passed through the continuous extrusion cladding machine at the same time, and the continuous extrusion cladding machine is used on the fiber core layer 11 The outer periphery is evenly covered with a layer of aluminum, thereby obtaining the composite core 1;
该复合芯1包括纤维芯层11和包裹在纤维芯层11外周的铝包裹层12,所述纤维的体积含量为50%~70%,纤维芯层11的直径为d,铝包裹层12的厚度为h,复合芯1的直径为D,纤维的体积含量为w,则纤维芯层11的直径d=(D2×w/0.8)1/2,铝包裹层12的厚度h=[D-d]/2;The composite core 1 includes a fiber core layer 11 and an aluminum cladding layer 12 wrapped around the fiber core layer 11, the volume content of the fiber is 50% to 70%, the diameter of the fiber core layer 11 is d, and the aluminum cladding layer 12 is The thickness is h, the diameter of the composite core 1 is D, and the volume content of the fiber is w, then the diameter d=(D 2 ×w/0.8) 1/2 of the fiber core layer 11, and the thickness h=[Dd ]/2;
F、收卷:将所述复合芯1卷绕成盘,以减少复合芯1的占用空间,便于其储存入库和运输。F. Winding: the composite core 1 is wound into a disk to reduce the occupied space of the composite core 1 and facilitate its storage and transportation.
本申请涉及的复合芯1制造方法中,将铝杆和纤维芯层11送入连续挤压包覆机中后,连续挤压包覆机能够连续不断地生产出符合要求的复合芯1,其免去了现有技术中采用树脂包裹层的复合芯1在制造过程中树脂固化的步骤,从而大大缩短复合芯1的生产周期,进而很大程度地提高了复合芯1的生产效率,满足现代精益生产的要求。In the manufacturing method of the composite core 1 involved in the present application, after the aluminum rod and the fiber core layer 11 are fed into the continuous extrusion coating machine, the continuous extrusion coating machine can continuously produce the composite core 1 that meets the requirements. The step of resin curing in the manufacturing process of the composite core 1 using the resin wrapping layer in the prior art is eliminated, thereby greatly shortening the production cycle of the composite core 1, thereby greatly improving the production efficiency of the composite core 1, and meeting modern requirements. Lean production requirements.
优选地,上述步骤D中,连续挤压包覆机中用于加热铝杆的模腔的加热温度T≧350℃,使铝杆处于半融化的状态,进而便于铝均匀地包裹在纤维芯层11的外周,形成复合芯1的铝包裹层12。Preferably, in the above step D, the heating temperature of the mold cavity used to heat the aluminum rod in the continuous extrusion coating machine is T≧350°C, so that the aluminum rod is in a semi-melted state, so that aluminum can be evenly wrapped in the fiber core layer 11, forming the aluminum cladding 12 of the composite core 1.
以下例举几个复合芯1的较优实施例:The preferred embodiments of several composite cores 1 are given as examples below:
表1 复合芯1直径与纤维芯层11直径的对应关系Table 1 Corresponding relationship between the diameter of composite core 1 and the diameter of fiber core layer 11
表2 复合芯1直径与铝包裹层12厚度的对应关系Table 2 Corresponding relationship between the diameter of the composite core 1 and the thickness of the aluminum cladding layer 12
综上所述,本实用新型有效克服了现有技术中的种种缺点而具高度产业利用价值。To sum up, the utility model effectively overcomes various shortcomings in the prior art and has high industrial application value.
上述实施例仅例示性说明本实用新型的原理及其功效,而非用于限制本实用新型。任何熟悉此技术的人士皆可在不违背本实用新型的精神及范畴下,对上述实施例进行修饰或改变。因此,举凡所属技术领域中具有通常知识者在未脱离本实用新型所揭示的精神与技术思想下所完成的一切等效修饰或改变,仍应由本实用新型的权利要求所涵盖。The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.
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