CN108179259B - Steel core prestress treatment system and prestress treatment method for steel core aluminum stranded wire - Google Patents

Steel core prestress treatment system and prestress treatment method for steel core aluminum stranded wire Download PDF

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CN108179259B
CN108179259B CN201711383796.3A CN201711383796A CN108179259B CN 108179259 B CN108179259 B CN 108179259B CN 201711383796 A CN201711383796 A CN 201711383796A CN 108179259 B CN108179259 B CN 108179259B
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wire
steel core
steel
tension
wheel
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CN108179259A (en
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党朋
黄国飞
秦凯
曾伟
徐睿
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Shanghai Electric Cable Research Institute
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00Modifying the physical properties of iron or steel by deformation
    • C21D7/02Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/10Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00Modifying the physical properties of iron or steel by deformation
    • C21D7/13Modifying the physical properties of iron or steel by deformation by hot working

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

The invention provides a steel core prestress treatment system and a prestress treatment method for a steel core aluminum stranded wire, wherein a wire inlet tension device, a heating device and a wire outlet tension device are sequentially arranged between a wire pay-off rack and a wire take-up rack; the wire inlet tension device comprises a wire inlet tension wheel and a wire inlet wheel driving piece for driving the wire inlet tension wheel to rotate; the wire outlet tension device comprises a wire outlet tension wheel and a wire outlet wheel driving piece for driving the wire outlet tension wheel to rotate; the rotation speed of the incoming wire tension wheel is smaller than that of the outgoing wire tension wheel; the steel core of the steel-cored aluminum stranded wire which is paid out from the wire pay-off rack is wound on the wire-in tension wheel, and after passing through the heating device, the steel core is wound on the wire-out tension wheel. The invention can solve the problem that the deformation and creep generated by the traditional steel-cored aluminum strand under the action of temperature and stress change the stress characteristics of the steel-cored aluminum strand, thereby affecting the operation safety of the steel-cored aluminum strand.

Description

钢芯铝绞线的钢芯预应力处理系统和预应力处理方法Steel core prestressing system and prestressing method for steel core aluminum stranded wire

技术领域Technical field

本发明涉及架空输电线技术领域,特别是涉及一种钢芯铝绞线的钢芯预应力处理系统和预应力处理方法。The invention relates to the technical field of overhead transmission lines, and in particular to a steel core prestressing system and prestressing method for steel core aluminum stranded wires.

背景技术Background technique

钢芯铝绞线是架空输电线路中应用最多的导线之一,约占整个导线类型的80%以上。作为一个复合结构件,其内层钢绞线芯主要承受力的作用,而外层铝线主要作为导电体,进行电能的传输。在运行时,导线的性能取决于钢芯、铝线及二者结构匹配特性。传统方法制造的钢芯,与外层铝线绞合成的钢芯铝绞线,其性能是钢芯和铝线组合。对于钢芯铝绞线而言,钢芯主要作为承力件,发挥承力功能,而铝线主要发挥导电功能。因此钢芯的力学特性很大程度上决定着钢芯铝绞线的力学特性。Steel core aluminum stranded wire is one of the most commonly used conductors in overhead transmission lines, accounting for more than 80% of the entire conductor type. As a composite structural component, its inner steel strand core is mainly responsible for bearing force, while the outer aluminum wire is mainly used as a conductor to transmit electrical energy. During operation, the performance of the conductor depends on the steel core, aluminum wire and the structural matching characteristics of the two. The steel core made by traditional methods is twisted with the outer aluminum wire to form a steel core aluminum stranded wire. Its performance is the combination of steel core and aluminum wire. For steel-core aluminum stranded wires, the steel core mainly serves as a load-bearing member and plays a load-bearing function, while the aluminum wire mainly plays a conductive function. Therefore, the mechanical properties of the steel core largely determine the mechanical properties of the steel core aluminum stranded wire.

在实际应用中,由于钢芯铝绞线的温度变化以及所受风、冰雪等外部荷载的作用,使钢芯铝绞线会产生一定的变形,使得钢芯铝绞线的弧垂增大,进而对线路运行带来很大的安全隐患。如何改善钢芯铝绞线中钢芯的力学性能是本领域技术人员需要解决的问题。In practical applications, due to the temperature changes of the ACSR and the external loads such as wind, ice and snow, the ACSR will deform to a certain extent, causing the sag of the ACSR to increase. This in turn brings great safety risks to line operation. How to improve the mechanical properties of the steel core in steel-core aluminum stranded wires is a problem that needs to be solved by those skilled in the art.

发明内容Contents of the invention

鉴于以上所述现有技术的缺点,本发明要解决的技术问题在于提供一种钢芯铝绞线的钢芯预应力处理系统和预应力处理方法。In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a steel core prestressing treatment system and a prestressing treatment method for steel core aluminum stranded wires.

为了解决上述技术问题,本发明提供一种钢芯铝绞线的钢芯预应力处理系统,包括:导线放线架和导线收线架,所述导线放线架放出钢芯铝绞线的钢芯,所述导线放线架收入所述钢芯铝绞线的钢芯;在所述导线放线架和所述导线收线架之间依次设置有进线张力装置、加热装置和出线张力装置;所述进线张力装置包括进线张力轮和驱动所述进线张力轮转动的进线轮驱动件;所述出线张力装置包括出线张力轮和驱动所述出线张力轮转动的出线轮驱动件;所述进线张力轮的转动速度小于所述出线张力轮的转动速度;从所述导线放线架放出的所述钢芯铝绞线的钢芯绕设在所述进线张力轮上,再穿入所述加热装置后,绕设在所述出线张力轮上。In order to solve the above technical problems, the present invention provides a steel core prestressing treatment system for steel core aluminum stranded wires, including: a conductor pay-out frame and a conductor take-up frame. The conductor pay-out frame pays out the steel core aluminum stranded wire. The conductor pay-off frame receives the steel core of the steel-core aluminum stranded wire; an incoming wire tension device, a heating device and an outgoing wire tension device are arranged in sequence between the conductor pay-off frame and the conductor take-up frame. ; The incoming line tension device includes an incoming line tension wheel and an incoming line wheel driving member that drives the incoming line tension wheel to rotate; the outgoing line tension device includes an outgoing line tension wheel and an outgoing line wheel driving member that drives the outgoing line tension wheel to rotate ; The rotation speed of the incoming wire tension wheel is less than the rotation speed of the outgoing wire tension wheel; the steel core of the steel core aluminum stranded wire released from the wire pay-off frame is wound on the incoming wire tension wheel, After passing through the heating device, it is wound around the outlet tension wheel.

优选地,所述加热装置为中频感应加热炉。Preferably, the heating device is a medium frequency induction heating furnace.

优选地,所述钢芯铝绞线的钢芯预应力处理系统,还包括:吹气清洗装置;所述吹气清洗装置设置在所述出线张力装置和所述导线收线架之间,且处于所述钢芯铝绞线的钢芯的上方。Preferably, the steel core prestressing treatment system of the steel core aluminum stranded wire further includes: an air blowing and cleaning device; the air blowing and cleaning device is arranged between the outlet wire tension device and the wire take-up frame, and Above the steel core of the steel-core aluminum stranded wire.

本发明还涉及一种钢芯铝绞线的钢芯预应力处理方法,采用所述的钢芯铝绞线的钢芯预应力处理系统,包括以下步骤:将一根钢芯铝绞线的钢芯从导线放线架放出后,所述钢芯依次绕设在进线张力装置的进线张力轮和出线张力装置的出线张力轮上,所述进线张力装置和所述出线张力装置对所述钢芯施加张力,且所述进线张力轮的转动速度小于所述出线张力轮的转动速度,从所述出线张力装置输出的所述钢芯被施加的张力为所述钢芯的最大破断力的30%-60%;在所述钢芯从所述进线张力装置输出后,且所述钢芯输入所述出线张力装置之前,加热装置对所述钢芯进行加热,加热温度为360℃-400℃;所述导线收线架对从所述出线张力装置输出的所述钢芯进行收线操作。The invention also relates to a steel core prestressing treatment method for steel core aluminum stranded wires. The steel core prestressing treatment system for steel core aluminum stranded wires includes the following steps: After the core is released from the wire pay-off frame, the steel core is wound around the incoming wire tension wheel of the incoming wire tension device and the outgoing wire tension wheel of the outgoing wire tension device. The incoming wire tension device and the outgoing wire tension device are The steel core applies tension, and the rotation speed of the incoming wire tension wheel is less than the rotation speed of the outlet wire tension wheel. The tension applied to the steel core output from the outlet wire tension device is the maximum breaking of the steel core. 30%-60% of the force; after the steel core is output from the incoming wire tension device and before the steel core is input into the outgoing wire tension device, the heating device heats the steel core, and the heating temperature is 360 ° C - 400 ° C; the wire take-up frame performs a wire take-up operation on the steel core output from the outlet tension device.

优选地,所述钢芯预应力处理方法处理钢芯的速度为3-5m/min。Preferably, the steel core prestressing treatment method processes the steel core at a speed of 3-5m/min.

进一步地,所述出线张力装置处理所述钢芯的速度为3-5m/min。Further, the speed at which the outgoing wire tension device processes the steel core is 3-5m/min.

进一步地,所述加热装置处理所述钢芯的速度为3-5m/min。Further, the speed at which the heating device processes the steel core is 3-5m/min.

优选地,所述钢芯预应力处理系统还包括:吹气清洗装置;所述吹气清洗装置设置在所述出线张力装置和所述导线收线架之间,且处于所述钢芯铝绞线的钢芯的上方;所述吹气清洗装置对所述进线张力装置输出的所述钢芯进行吹气。Preferably, the steel core prestressing treatment system further includes: an air blowing cleaning device; the air blowing cleaning device is provided between the outlet wire tension device and the wire take-up frame, and is located between the steel core aluminum strand above the steel core of the wire; the air blowing and cleaning device blows air on the steel core output by the incoming wire tension device.

进一步地,所述吹气清洗装置对所述钢芯的表面吹高压气体,吹出的高压气体的压力为5Mpa-7Mpa。Further, the air blowing cleaning device blows high-pressure gas on the surface of the steel core, and the pressure of the blown high-pressure gas is 5Mpa-7Mpa.

更进一步地,所述吹气清洗装置处理所述钢芯的速度为3-5m/min。Furthermore, the speed at which the air blowing cleaning device processes the steel core is 3-5m/min.

如上所述,本发明的钢芯铝绞线的钢芯预应力处理系统和预应力处理方法,具有以下有益效果:As mentioned above, the steel core prestressing system and prestressing method of the steel core aluminum stranded wire of the present invention have the following beneficial effects:

本发明的进线张力装置和出线张力装置形成对钢芯施加预应力的张力施加组件;对钢芯进行预应力处理,使钢芯获得一定的压应力,绞合上外部的铝线后,能够改变钢芯铝绞线在施工及运行时的力学特性;通过钢芯预应力处理,消除钢芯在随后施工时的初伸长,通过与铝线的配合,进而降低整个钢芯铝绞线的初伸长,并且能够改变钢芯铝绞线的受力分布,使得钢芯铝绞线的迁移点温度下降;消除钢芯的蠕变量,进而减小整个的钢芯铝绞线在使用寿命周期的蠕变量,解决运行后的弧垂增加问题;在进线张力装置和出线张力装置之间设置加热装置,是对钢芯预应力处理过程中的钢芯进行加热,则能够改善钢芯的应力分布,并与钢芯获得的应力一起作用,加速钢芯的应变变形,达到预应力处理钢芯的效果;本发明能够解决传统钢芯铝绞线在温度和应力作用下,产生的变形和蠕变对钢芯铝绞线受力特性的改变,进而影响钢芯铝绞线的运行安全的问题。The incoming wire tension device and the outgoing wire tension device of the present invention form a tension applying component that applies prestress to the steel core; the steel core is prestressed so that the steel core obtains a certain compressive stress. After stranding the external aluminum wire, it can Change the mechanical properties of the steel core aluminum stranded wire during construction and operation; through the steel core prestressing treatment, the initial elongation of the steel core during subsequent construction is eliminated, and through cooperation with the aluminum wire, the overall steel core aluminum stranded wire is reduced Initial elongation, and can change the stress distribution of the steel core aluminum stranded wire, causing the migration point temperature of the steel core aluminum stranded wire to drop; eliminating the creep of the steel core, thereby reducing the service life of the entire steel core aluminum stranded wire The periodic creep amount solves the problem of increased sag after operation; a heating device is installed between the incoming wire tension device and the outgoing wire tension device to heat the steel core during the prestressing process of the steel core, which can improve the steel core. The stress distribution of the steel core works together with the stress obtained by the steel core to accelerate the strain deformation of the steel core and achieve the effect of prestressing the steel core; the invention can solve the deformation of the traditional steel core aluminum stranded wire under the action of temperature and stress. And creep changes the stress characteristics of steel core aluminum stranded wires, which in turn affects the operation safety of steel core aluminum stranded wires.

附图说明Description of the drawings

图1显示为本实施例的钢芯铝绞线的钢芯预应力处理系统的结构示意图。Figure 1 shows a schematic structural diagram of the steel core prestressing system of the steel core aluminum stranded wire in this embodiment.

图2显示为本实施例的未处理钢芯、碳纤维复合芯和预应力处理钢芯的应力-应变关系的示意图。Figure 2 shows a schematic diagram of the stress-strain relationship of the untreated steel core, carbon fiber composite core and prestressed steel core in this embodiment.

附图标号说明Explanation of reference numbers

10 钢芯10 steel core

100 导线放线架100 wire pay-off stand

200 导线收线架200 wire take-up stand

300 进线张力装置300 incoming line tension device

310 进线张力轮310 Inlet tension wheel

400 加热装置400 heating device

500 出线张力装置500 outlet tension device

510 出线张力轮510 outlet tension wheel

600 吹气清洗装置600 air blow cleaning device

具体实施方式Detailed ways

以下由特定的具体实施例说明本发明的实施方式,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发明的其他优点及功效。The implementation of the present invention is described below with specific embodiments. Those familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

请参阅附图。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,并非用以限定本发明可实施的限定条件,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,在不影响本发明所能产生的功效及所能达成的目的下,均应仍落在本发明所揭示的技术内容所能涵盖的范围内。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,而非用以限定本发明可实施的范围,其相对关系的改变或调整,在无实质变更技术内容下,当亦视为本发明可实施的范畴。Please see attached picture. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to coordinate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the implementation of the present invention. Restrictive conditions, so they have no technical substantive significance. Any structural modifications, changes in proportions, or adjustments in size should still fall within the scope of the present invention as long as they do not affect the effects that the present invention can produce and the purposes that can be achieved. Within the scope of the technical content disclosed. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for convenience of description and are not used to limit the scope of this specification. The scope of the invention that can be implemented, and changes or adjustments in their relative relationships, as long as there is no substantial change in the technical content, shall also be regarded as the scope of the invention that can be implemented.

本实施例的钢芯铝绞线的钢芯10预应力处理系统,包括:导线放线架100和导线收线架200,导线放线架100放出钢芯铝绞线的钢芯10,导线放线架100收入钢芯铝绞线的钢芯10;The prestressed processing system for the steel core 10 of the steel core aluminum stranded wire in this embodiment includes: a conductor pay-out frame 100 and a conductor take-up frame 200. The conductor pay-out frame 100 pays out the steel core 10 of the steel core aluminum stranded wire. The wire frame 100 receives the steel core 10 of the steel core aluminum stranded wire;

在导线放线架100和导线收线架200之间依次设置有进线张力装置300、加热装置400和出线张力装置500;An incoming wire tension device 300, a heating device 400 and an outgoing wire tension device 500 are arranged in sequence between the wire pay-off frame 100 and the wire take-up frame 200;

进线张力装置300包括进线张力轮310和驱动进线张力轮310转动的进线轮驱动件;The incoming line tension device 300 includes an incoming line tension wheel 310 and an incoming line wheel driving part that drives the incoming line tension wheel 310 to rotate;

出线张力装置500包括出线张力轮510和驱动出线张力轮510转动的出线轮驱动件;The outlet tension device 500 includes an outlet tension wheel 510 and an outlet wheel driving part that drives the outlet tension wheel 510 to rotate;

进线张力轮310的转动速度小于出线张力轮510的转动速度;从导线放线架100放出的钢芯铝绞线的钢芯10绕设在进线张力轮310上,再穿过加热装置400后,绕设在出线张力轮510上。The rotation speed of the incoming wire tension wheel 310 is smaller than the rotation speed of the outgoing wire tension wheel 510; the steel core 10 of the steel core aluminum stranded wire released from the wire pay-off frame 100 is wound on the incoming wire tension wheel 310, and then passes through the heating device 400 Finally, it is wound on the outlet tension wheel 510.

本发明中,进线张力轮310的转动速度小于出线张力轮510的转动速度,所以出线张力轮510的转动速度推动钢芯10输出的过程中,对钢芯10施加预应力;进线张力装置300和出线张力装置500形成对钢芯10施加预应力的张力施加组件;对钢芯10进行预应力处理,使钢芯10获得一定的压应力,绞合上外部的铝线后,能够改变钢芯10铝绞线在施工及运行时的力学特性;通过钢芯10预应力处理,消除钢芯10在随后施工时的初伸长,通过与铝线的配合,进而降低整个钢芯10铝绞线的初伸长,并且能够改变钢芯10铝绞线的受力分布,使得钢芯10铝绞线的迁移点温度下降;消除钢芯10的蠕变量,进而减小整个的钢芯10铝绞线在使用寿命周期的蠕变量,解决运行后的弧垂增加问题;在进线张力装置300和出线张力装置500之间设置加热装置400,是对预应力处理过程中的钢芯10进行加热,则能够改善钢芯10的应力分布,并与钢芯10获得的应力一起作用,加速钢芯10的应变变形,达到预应力处理钢芯10的效果。In the present invention, the rotation speed of the inlet tension wheel 310 is smaller than the rotation speed of the outlet tension wheel 510, so when the rotation speed of the outlet tension wheel 510 drives the output of the steel core 10, prestress is applied to the steel core 10; the inlet tension device 300 and the outlet tension device 500 form a tension application component that applies prestress to the steel core 10; the steel core 10 is prestressed so that the steel core 10 obtains a certain compressive stress. After stranding the external aluminum wire, the steel core 10 can be changed. The mechanical properties of the core 10 aluminum stranded wire during construction and operation; through the prestressing treatment of the steel core 10, the initial elongation of the steel core 10 during subsequent construction is eliminated, and through cooperation with the aluminum wire, the entire steel core 10 aluminum stranded wire is reduced The initial elongation of the wire, and can change the stress distribution of the steel core 10 aluminum stranded wires, causing the migration point temperature of the steel core 10 aluminum stranded wires to drop; eliminate the creep amount of the steel core 10, thereby reducing the entire steel core 10 The creep amount of the aluminum stranded wire during the service life cycle solves the problem of increased sag after operation; a heating device 400 is provided between the incoming wire tension device 300 and the outgoing wire tension device 500 to pre-stress the steel core 10 Heating can improve the stress distribution of the steel core 10 and act together with the stress obtained by the steel core 10 to accelerate the strain deformation of the steel core 10 to achieve the effect of prestressing the steel core 10 .

采用本实施例的系统对钢芯10进行预应力处理就是把钢芯10施工时将要产生的初伸长提前在生产过程中进行消除。钢芯10铝绞线是由钢芯10和铝线复合而成的,降低钢芯10的初伸长进而降低钢芯10铝绞线的初伸长。通过预应力处理的钢芯10具有低蠕变量,与未处理的钢芯10相比,在绞合铝线之前,产生一个正压力,那么绞合铝线后,进行整个钢芯10铝绞线受力时,对于所受的拉应力,是一个反作用力,减少来自拉应力的作用。这样外部铝线很快受到力的作用,产生塑性变形,后面钢芯10铝绞线的拉力转移至钢芯10。这样钢芯10铝绞线的迁移点温度比未处理的钢芯10铝绞线要低。Using the system of this embodiment to prestress the steel core 10 is to eliminate the initial elongation that will occur during the construction of the steel core 10 in advance during the production process. Steel core 10 aluminum stranded wire is composed of steel core 10 and aluminum wire, which reduces the initial elongation of steel core 10 and thereby reduces the initial elongation of steel core 10 aluminum stranded wire. The steel core 10 treated by prestressing has low creep. Compared with the untreated steel core 10, a positive pressure is generated before the aluminum wire is stranded. Then, after the aluminum wire is stranded, the entire steel core 10 is stranded. When the wire is stressed, it acts as a reaction force to the tensile stress, reducing the effect of the tensile stress. In this way, the external aluminum wire is quickly acted upon by force and undergoes plastic deformation, and the tensile force of the aluminum stranded wires of the steel core 10 is transferred to the steel core 10. In this way, the migration point temperature of the steel core 10 aluminum stranded wire is lower than that of the untreated steel core 10 aluminum stranded wire.

本实施例中,进线轮驱动件为进线控制电机,出线轮驱动件为出线控制电机。In this embodiment, the driving part of the incoming line wheel is an incoming line control motor, and the driving part of the outgoing line wheel is an outgoing line control motor.

出线张力轮510的转动速度比进线张力轮310的转动速度快0.1m/min-0.5m/min。出线张力轮510的转动速度推动钢芯10输出的过程中,对钢芯10施加预应力。The rotation speed of the outlet tension wheel 510 is 0.1m/min-0.5m/min faster than the rotation speed of the inlet tension wheel 310. When the rotation speed of the outlet tension wheel 510 drives the output of the steel core 10, prestress is applied to the steel core 10.

加热装置400为中频感应加热炉。中频感应加热炉能够对钢芯10进行稳定且均匀地加热。由于中频感应加热炉为非接触式加热,能够保证不会对钢芯10的预应力处理的过程造成影响。The heating device 400 is a medium frequency induction heating furnace. The medium frequency induction heating furnace can heat the steel core 10 stably and evenly. Since the medium frequency induction heating furnace is non-contact heating, it can ensure that it will not affect the prestressing process of the steel core 10 .

钢芯铝绞线的钢芯10预应力处理系统,还包括:吹气清洗装置600;吹气清洗装置600设置在出线张力装置500和导线收线架200之间,且处于钢芯铝绞线的钢芯10的上方。吹气清洗装置600能够在钢芯10进入导线收线架200之前,吹掉钢芯10上的杂质,实现对钢芯10表面的清洁效果。The steel core 10 prestressing treatment system of the steel core aluminum stranded wire also includes: an air blowing cleaning device 600; the air blowing cleaning device 600 is arranged between the outlet tension device 500 and the conductor take-up frame 200, and is located between the steel core aluminum stranded wire above the steel core 10. The air blowing cleaning device 600 can blow off impurities on the steel core 10 before the steel core 10 enters the wire take-up frame 200, thereby achieving a cleaning effect on the surface of the steel core 10.

本实施例还涉及一种钢芯铝绞线的钢芯10预应力处理方法,采用钢芯铝绞线的钢芯10预应力处理系统,包括以下步骤:将一根钢芯铝绞线的钢芯10从导线放线架100放出后,钢芯10依次绕设在进线张力装置300的进线张力轮310和出线张力装置500的出线张力轮510上,进线张力装置300和出线张力装置500对钢芯10施加张力,且进线张力轮310的转动速度小于出线张力轮510的转动速度,从出线张力装置500输出的钢芯10被施加的张力为钢芯10的最大破断力的30%-60%;在钢芯10从进线张力装置300输出后,且钢芯10输入出线张力装置500之前,加热装置400对钢芯10进行加热,加热温度为360℃-400℃;导线收线架200对从出线张力装置500输出的钢芯10进行收线操作。This embodiment also relates to a method for prestressing the steel core 10 of the steel core aluminum stranded wire. The steel core 10 prestressing processing system of the steel core aluminum stranded wire is used, which includes the following steps: After the core 10 is released from the wire pay-off frame 100, the steel core 10 is wound around the incoming wire tension wheel 310 of the incoming wire tension device 300 and the outlet wire tension wheel 510 of the outlet wire tension device 500. The incoming wire tension device 300 and the outlet wire tension device 500 applies tension to the steel core 10, and the rotation speed of the incoming wire tension wheel 310 is less than the rotation speed of the outlet tension wheel 510. The tension applied to the steel core 10 output from the outlet tension device 500 is 30% of the maximum breaking force of the steel core 10. %-60%; after the steel core 10 is output from the incoming wire tension device 300 and before the steel core 10 is input into the outgoing wire tension device 500, the heating device 400 heats the steel core 10, and the heating temperature is 360°C-400°C; the wire is retracted The wire rack 200 performs a wire take-up operation on the steel core 10 output from the outlet wire tension device 500 .

从出线张力装置500输出的钢芯10被施加的张力为钢芯10的最大破断力的30%-60%,在保证钢芯10预应力处理效果的同时,能够保证钢芯10使用的强度。加热装置400对钢芯10进行加热的温度,能够保证钢芯10所需达到的预应力处理效果。The tension applied to the steel core 10 output from the outlet tension device 500 is 30%-60% of the maximum breaking force of the steel core 10, which can ensure the strength of the steel core 10 while ensuring the prestressing effect of the steel core 10. The temperature at which the heating device 400 heats the steel core 10 can ensure the required prestressing treatment effect of the steel core 10 .

钢芯10预应力处理方法处理钢芯10的速度为3-5m/min。出线张力装置500处理钢芯10的速度为3-5m/min。加热装置400处理钢芯10的速度为3-5m/min。处理钢芯10的速度在保证钢芯10预应力处理效果的同时,具备较高的处理效率。The steel core 10 prestressing treatment method processes the steel core 10 at a speed of 3-5m/min. The speed at which the outlet tension device 500 processes the steel core 10 is 3-5m/min. The heating device 400 processes the steel core 10 at a speed of 3-5 m/min. The speed of processing the steel core 10 not only ensures the prestressing treatment effect of the steel core 10, but also has high processing efficiency.

钢芯10预应力处理系统还包括:吹气清洗装置600;吹气清洗装置600设置在出线张力装置500和导线收线架200之间,且处于钢芯铝绞线的钢芯10的上方;吹气清洗装置600对进线张力装置300输出的钢芯10进行吹气,实现对钢芯10表面的清洁效果。The steel core 10 prestressing treatment system also includes: an air blowing cleaning device 600; the air blowing cleaning device 600 is arranged between the outlet tension device 500 and the wire take-up frame 200, and is above the steel core 10 of the steel core aluminum stranded wire; The air blowing cleaning device 600 blows air onto the steel core 10 output from the incoming line tension device 300 to achieve a cleaning effect on the surface of the steel core 10 .

吹气清洗装置600对钢芯10的表面吹高压气体,吹出的高压气体的压力为5Mpa-7Mpa。吹高压气体能够快速对钢芯10表面进行高效地清洁。The air blowing cleaning device 600 blows high-pressure gas on the surface of the steel core 10, and the pressure of the blown high-pressure gas is 5Mpa-7Mpa. Blowing high-pressure gas can quickly and efficiently clean the surface of the steel core 10 .

吹气清洗装置600处理钢芯10的速度为3-5m/min。The speed at which the air blow cleaning device 600 processes the steel core 10 is 3-5m/min.

如图2所示,未处理钢芯10的应力-应变线S1中,未处理钢芯10在初始阶段应力-应变呈现为线性关系,达到一定变形量后,出现应力缓慢增加,而应变快速增大,这说明此时未处理的钢芯10已经发生了塑性变形。碳纤维复合芯的应力-应变线S2中,对于碳纤维复合芯,其整个受力阶段,应力-应变呈现为线性关系。因此碳纤维复合芯导线具有优异的弧垂性能特性。对于本实施例的预应力处理钢芯10,由图2可以看出,预应力处理钢芯10的应力-应变线S3中,在其受力阶段,应力-应变也呈现为线性关系,所以由其作为加强芯的导线也具有优异的弧垂性能特性。As shown in Figure 2, in the stress-strain line S1 of the untreated steel core 10, the stress-strain relationship of the untreated steel core 10 is linear in the initial stage. After reaching a certain amount of deformation, the stress increases slowly and the strain increases rapidly. Large, this shows that the untreated steel core 10 has undergone plastic deformation at this time. In the stress-strain line S2 of the carbon fiber composite core, for the carbon fiber composite core, the stress-strain relationship is linear during the entire stress stage. Therefore, carbon fiber composite core conductors have excellent sag performance characteristics. For the prestressed steel core 10 of this embodiment, it can be seen from Figure 2 that in the stress-strain line S3 of the prestressed steel core 10, in its stress stage, the stress-strain also presents a linear relationship, so as As a reinforcing core wire, it also has excellent sag performance characteristics.

本发明能够解决传统钢芯10铝绞线在温度和应力作用下,产生的变形和蠕变对钢芯10铝绞线受力特性的改变,进而影响钢芯10铝绞线的运行安全的问题。The invention can solve the problem of the deformation and creep of traditional steel core 10 aluminum stranded wires changing the force characteristics of the steel core 10 aluminum stranded wires under the action of temperature and stress, thereby affecting the operation safety of the steel core 10 aluminum stranded wires. .

综上,本实施例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。In summary, this embodiment 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施例的原理及其功效,而非用于限制本实施例。任何熟悉此技术的人士皆可在不违背本实施例的精神及范畴下,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施例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,仍应由本实施例的权利要求所涵盖。The above embodiments only illustrate the principles and effects of this embodiment, but are not used to limit this embodiment. Anyone familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the embodiments. 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 this embodiment shall still be covered by the claims of this embodiment.

Claims (10)

1. A steel core pre-stress treatment system for a steel core aluminum strand, comprising: the wire pay-off rack (100) and the wire take-up rack (200), wherein the wire pay-off rack (100) pays out a steel core (10) of the steel-cored aluminum strand, and the wire pay-off rack (100) receives the steel core (10) of the steel-cored aluminum strand; the wire pay-off rack is characterized in that a wire inlet tension device (300), a heating device (400) and a wire outlet tension device (500) are sequentially arranged between the wire pay-off rack (100) and the wire take-up rack (200);
the wire inlet tension device (300) comprises a wire inlet tension wheel (310) and a wire inlet wheel driving piece for driving the wire inlet tension wheel (310) to rotate;
the wire outlet tension device (500) comprises a wire outlet tension wheel (510) and a wire outlet wheel driving piece for driving the wire outlet tension wheel (510) to rotate;
the rotational speed of the incoming line tension wheel (310) is less than the rotational speed of the outgoing line tension wheel (510);
the steel core (10) of the steel-cored aluminum strand paid out from the wire pay-off rack (100) is wound on the wire-in tension wheel (310), penetrates into the heating device (400) and is wound on the wire-out tension wheel (510);
the tension applied to the steel core (10) output by the wire outlet tension device (500) is 30% -60% of the maximum breaking force of the steel core (10); after the steel core (10) is output from the wire inlet tension device (300) and before the steel core (10) is input into the wire outlet tension device (500), the steel core (10) is heated by the heating device (400), and the heating temperature is 360-400 ℃.
2. The steel core prestress treatment system of a steel-cored aluminum strand according to claim 1, wherein: the heating device (400) is an intermediate frequency induction heating furnace.
3. The steel core prestress treatment system of a steel-cored aluminum strand according to claim 1, wherein: further comprises: a blow cleaning device (600); the blowing cleaning device (600) is arranged between the wire outlet tension device (500) and the wire collecting frame (200) and is positioned above the steel core (10) of the steel-cored aluminum strand.
4. A steel core prestress treatment method of a steel core aluminum stranded wire, which adopts a steel core (10) prestress treatment system of the steel core aluminum stranded wire according to any one of claims 1-2, and is characterized in that: the method comprises the following steps:
after a steel core (10) of a steel-cored aluminum strand is paid out from a wire pay-off rack (100), the steel core (10) is sequentially wound on a wire-in tension wheel (310) of a wire-in tension device (300) and a wire-out tension wheel (510) of a wire-out tension device (500), the wire-in tension device (300) and the wire-out tension device (500) apply tension to the steel core (10), the rotation speed of the wire-in tension wheel (310) is smaller than that of the wire-out tension wheel (510), and the tension applied to the steel core (10) output from the wire-out tension device (500) is 30% -60% of the maximum breaking force of the steel core (10); after the steel core (10) is output from the wire inlet tension device (300) and before the steel core (10) is input into the wire outlet tension device (500), the steel core (10) is heated by a heating device (400), and the heating temperature is 360-400 ℃; the wire take-up frame (200) performs a take-up operation on the steel core (10) output from the wire-out tension device (500).
5. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 4, wherein: the speed of the steel core (10) treated by the steel core (10) prestress treatment method is 3-5m/min.
6. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 5, wherein the steel core prestress treatment method comprises the following steps: the speed of the wire outlet tension device (500) for treating the steel core (10) is 3-5m/min.
7. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 5, wherein the steel core prestress treatment method comprises the following steps: the speed of the heating device (400) for treating the steel core (10) is 3-5m/min.
8. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 4, wherein: the steel core (10) pre-stress treatment system further comprises: a blow cleaning device (600); the blowing cleaning device (600) is arranged between the wire outlet tension device (500) and the wire collecting frame (200) and is positioned above the steel core (10) of the steel-cored aluminum strand; the blowing cleaning device (600) blows the steel core (10) output by the wire inlet tension device (300).
9. The steel core prestress treatment method of the steel-cored aluminum strand of claim 8, wherein: the blowing cleaning device (600) blows high-pressure gas to the surface of the steel core (10), and the pressure of the blown high-pressure gas is 5Mpa-7Mpa.
10. The steel core prestress treatment method of the steel-cored aluminum strand of claim 8, wherein: the speed of the blowing cleaning device (600) for treating the steel core (10) is 3-5m/min.
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