CN114300185A - High elastic recovery type anti-signal crosstalk multi-core cable - Google Patents
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Abstract
本发明公开了一种高弹性恢复式防信号串扰多芯电缆,包括两个电源线芯和两个控制线芯围绕一个交联氟橡胶弹性体共同绞合构成缆芯,交联氟橡胶弹性体内套设有排扰导体,缆芯外部依次包覆交联氟橡胶弹性内护套、导电纤维缠绕屏蔽层和聚氨酯挤包外护套,交联氟橡胶弹性体和交联氟橡胶弹性内护套均包括内圆筒体和外圆筒体,内圆筒体和外圆筒体之间呈辐射状均布有若干连接板体,电源线芯包括电源导体、交联聚乙烯内绝缘层和PPS外绝缘层,控制线芯由两个绝缘线芯对绞构成,绝缘线芯包括控制导体和FEP挤包绝缘层。该多芯电缆具有优异的耐挤压性能和高弹性恢复能力,有效防止缆芯内部信号串扰现象,保证电气特性的稳定性。
The invention discloses a high-elasticity recovery type anti-signal crosstalk multi-core cable, which comprises two power cores and two control cores that are twisted together around a cross-linked fluororubber elastomer to form a cable core, and the cross-linked fluororubber elastomer is inside the cable core. The sheath is provided with a drain conductor, and the outside of the cable core is sequentially covered with a cross-linked fluororubber elastic inner sheath, a conductive fiber wound shielding layer and a polyurethane extruded outer sheath, cross-linked fluororubber elastomer and cross-linked fluororubber elastic inner sheath. Both include an inner cylinder and an outer cylinder, and between the inner cylinder and the outer cylinder are radially distributed several connecting plates. The power cord core includes a power conductor, a cross-linked polyethylene inner insulating layer and PPS. The outer insulating layer, the control wire core is composed of two insulated wire cores twisted, and the insulated wire core includes the control conductor and the FEP extruded insulation layer. The multi-core cable has excellent extrusion resistance and high elastic recovery ability, which can effectively prevent crosstalk of signals inside the cable core and ensure the stability of electrical characteristics.
Description
技术领域technical field
本发明涉及电缆技术领域,具体而言,涉及一种高弹性恢复式防信号串扰多芯电缆。The present invention relates to the technical field of cables, in particular to a high-elasticity recovery type anti-signal crosstalk multi-core cable.
背景技术Background technique
多芯电缆通常为电源线芯和对绞线芯共同绞合而成,然而,多芯电缆的缆芯中通常绞合有两个或两个以上的对绞线芯,在正常工作环境下,对绞线芯之间由于直接接触容易发生信号串扰问题,造成电缆的屏蔽性能不稳定,影响正常工作。而且,多芯电缆的敷设过程中经受弯曲挤压后,难以依靠自身弹性恢复原状,弯曲挤压造成的变形极易发生断线断芯,造成电气性能不稳定,电缆的安全可靠性差。Multi-core cables are usually formed by twisting power cores and twisted-pair cores together. However, the cores of multi-core cables are usually twisted with two or more twisted-pair cores. Under normal working conditions, Due to the direct contact between the twisted pair cores, signal crosstalk is prone to occur, resulting in unstable cable shielding performance and affecting normal operation. Moreover, after being bent and squeezed during the laying process of the multi-core cable, it is difficult to rely on its own elasticity to restore the original state.
发明内容SUMMARY OF THE INVENTION
本发明针对现有技术的不足,所要解决的技术问题是提供一种高弹性恢复式防信号串扰多芯电缆,具有优异的耐挤压性能和高弹性恢复能力,避免出现断线断芯,能够有效防止缆芯内部信号串扰现象,保证电气特性的稳定性,耐热性能优异,耐久使用。Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a high-elasticity recovery type anti-signal crosstalk multi-core cable, which has excellent extrusion resistance and high elastic recovery ability, avoids wire breakage and core breakage, and can Effectively prevent signal crosstalk inside the cable core, ensure the stability of electrical characteristics, excellent heat resistance and durable use.
本发明是通过以下技术方案使上述技术问题得以解决。The present invention solves the above technical problems through the following technical solutions.
高弹性恢复式防信号串扰多芯电缆,包括两个电源线芯和两个控制线芯围绕一个交联氟橡胶弹性体共同绞合构成缆芯,所述交联氟橡胶弹性体内套设有排扰导体,所述缆芯外部依次包覆有交联氟橡胶弹性内护套、导电纤维缠绕屏蔽层和聚氨酯挤包外护套,所述交联氟橡胶弹性体和所述交联氟橡胶弹性内护套均包括内圆筒体和外圆筒体,所述内圆筒体和所述外圆筒体之间呈辐射状均布有若干连接板体,所述电源线芯包括电源导体、交联聚乙烯内绝缘层和PPS外绝缘层,所述控制线芯由两个绝缘线芯对绞构成,所述绝缘线芯包括控制导体和FEP挤包绝缘层。The high-elasticity recovery type anti-signal crosstalk multi-core cable includes two power cores and two control cores twisted together around a cross-linked fluororubber elastomer to form a cable core, and the cross-linked fluororubber elastomer is sheathed with rows of The outer part of the cable core is sequentially covered with a cross-linked fluororubber elastic inner sheath, a conductive fiber wound shielding layer and a polyurethane extruded outer sheath, the cross-linked fluororubber elastomer and the cross-linked fluororubber elastic The inner sheath includes an inner cylindrical body and an outer cylindrical body, a plurality of connecting plates are evenly distributed in a radial shape between the inner cylindrical body and the outer cylindrical body, and the power cord core includes a power supply conductor, Cross-linked polyethylene inner insulation layer and PPS outer insulation layer, the control wire core is composed of two insulated wire cores twisted, and the insulated wire core includes a control conductor and a FEP extruded insulation layer.
作为优选,所述绝缘线芯绞向与所述缆芯绞向相同。Preferably, the twisting direction of the insulated wire core is the same as the twisting direction of the cable core.
作为优选,所述电源导体为若干直径为0.05mm至0.08mm镀锡铜单丝绞合构成。Preferably, the power conductor is composed of several tinned copper monofilaments with a diameter of 0.05mm to 0.08mm twisted together.
作为优选,所述控制导体为若干直径为0.02mm至0.04mm镀锡铜单丝同心绞合构成。Preferably, the control conductor is composed of several tinned copper monofilaments with a diameter of 0.02 mm to 0.04 mm concentrically twisted.
作为优选,所述排扰导体为若干软铜丝绞合并紧压形成圆形导体结构。Preferably, the drain conductor is a plurality of soft copper wires twisted and compressed to form a circular conductor structure.
作为优选,所述电源线芯和所述控制线芯的外径比为1:1至1.15:1。Preferably, the outer diameter ratio of the power core and the control core is 1:1 to 1.15:1.
作为优选,所述绝缘线芯和所述交联氟橡胶弹性体的外径比为1:1至1.25:1。Preferably, the outer diameter ratio of the insulated wire core and the cross-linked fluororubber elastomer is 1:1 to 1.25:1.
作为优选,所述导电纤维缠绕屏蔽层为导电纤维束螺旋缠绕结构,所述导电纤维束为两种不同线径的聚丙烯腈基碳纤维绞合并涂覆铜导电涂层形成,所述聚丙烯腈基碳纤维的线径不超过25μm。Preferably, the conductive fiber winding shielding layer is a conductive fiber bundle helically wound structure, and the conductive fiber bundle is formed by twisting two polyacrylonitrile-based carbon fibers with different wire diameters and coating a copper conductive coating, and the polyacrylonitrile The wire diameter of the base carbon fiber does not exceed 25 μm.
作为优选,所述交联聚乙烯内绝缘层和所述PPS外绝缘层合计厚度为0.2mm至0.5mm。Preferably, the cross-linked polyethylene inner insulating layer and the PPS outer insulating layer have a total thickness of 0.2 mm to 0.5 mm.
作为优选,所述FEP挤包绝缘层厚度为0.1mm至0.3mm。Preferably, the thickness of the FEP extruded insulating layer is 0.1 mm to 0.3 mm.
本发明的有益效果:Beneficial effects of the present invention:
1.位于缆芯中间的排扰导体套设在特殊结构设计的交联氟橡胶弹性体,交联氟橡胶弹性体有助于提高缆芯的柔韧性,减少缆芯内各线芯局部应力集中,有助于承受弯曲时的侧向压力,有效防止内部的排扰导体变形断芯发生,通过排扰导体套设交联氟橡胶弹性体将两个控制线芯隔离并共同绞合,有效的防止了两个控制线芯直接信号串扰发生,保证电缆稳定的电气特性。1. The drain conductor located in the middle of the cable core is sheathed with a cross-linked fluororubber elastomer with special structural design. The cross-linked fluororubber elastomer helps to improve the flexibility of the cable core and reduce the local stress concentration of each core in the cable core. , help to withstand the lateral pressure during bending, effectively prevent the internal drain conductor from deforming and breaking the core. The direct signal crosstalk between the two control wire cores is prevented, and the stable electrical characteristics of the cable are ensured.
2.通过两个电源线芯和两个控制线芯与交联氟橡胶弹性体绞合,以及缆芯外部包覆的交联氟橡胶弹性内护套,交联氟橡胶弹性体和交联氟橡胶弹性内护套均采用了特殊结构设计的交联氟橡胶绝缘体,圆筒形结构的交联氟橡胶绝缘体有助于承受弯曲时的侧向压力,减缓各线芯承受弯曲时的侧向压力和挤压力,有助于缓解缆芯内部的应力集中,减少线芯断线断芯发生,提高电缆的电气特性和安全可靠性的同时,能够有助于电缆敷设过程中经受弯曲挤压后快速弹性恢复至原有状态,各个线芯恢复至初始状态位置,避免出现变形造成的断丝断芯,保持电缆工作的稳定性和电气性能可靠性,耐久使用。2. The cross-linked fluororubber elastomer is twisted through two power cores and two control wire cores, and the cross-linked fluororubber elastic inner sheath, the cross-linked fluororubber elastomer and the cross-linked fluororubber are coated on the outside of the cable core. The rubber elastic inner sheath adopts a cross-linked fluororubber insulator with special structure design. The cross-linked fluororubber insulator with a cylindrical structure helps to withstand the lateral pressure during bending, and relieves the lateral pressure of each wire core when it is subjected to bending. It helps to relieve the stress concentration inside the cable core, reduce the occurrence of wire breakage and core breakage, and improve the electrical characteristics and safety and reliability of the cable. Quickly and elastically return to the original state, and each wire core returns to the original state position, avoiding broken wires and cores caused by deformation, maintaining the stability of cable operation and electrical performance reliability, and durable use.
3.电源线芯采用交联聚乙烯内绝缘层和PPS外绝缘层,PPS树脂具有优异的耐热性能和高机械强度,电源线芯的热稳定性更好,PPS外绝缘层作为交联聚乙烯内绝缘层的补强结构形成了保护作用,提高机械强度,保证电源线芯稳定的电气绝缘特性,耐久使用性更好。3. The power cord core adopts cross-linked polyethylene inner insulating layer and PPS outer insulating layer. PPS resin has excellent heat resistance and high mechanical strength, and the thermal stability of the power cord core is better. The reinforcing structure of the vinyl inner insulating layer forms a protective effect, improves the mechanical strength, ensures the stable electrical insulation properties of the power cord core, and has better durability.
4.采用导电纤维缠绕屏蔽层有助于轻质轻量化生产,降低成本,导电纤维屏蔽层的导电纤维束为两种不同线径的聚丙烯腈基碳纤维绞合并涂覆铜导电涂层形成,能够有效的抑制内部的信号或噪音泄漏至外部及抑制来自外部信号的干扰,保证电缆的屏蔽效果的稳定性。4. The use of conductive fiber to wrap the shielding layer is helpful for light-weight and lightweight production and reduce costs. The conductive fiber bundle of the conductive fiber shielding layer is formed by twisting two kinds of polyacrylonitrile-based carbon fibers with different wire diameters and coated with a copper conductive coating. It can effectively suppress the leakage of internal signals or noises to the outside and the interference from external signals to ensure the stability of the shielding effect of the cable.
附图说明Description of drawings
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要实用的附图作简单的介绍,显而易见地,下面描述的附图是本发明的一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the practical drawings required in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings described below These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.
图1为本申请实施例的断面结构示意图。FIG. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
图中:1-电源线芯,11-电源导体,12-交联聚乙烯内绝缘层,13-PPS外绝缘层,2-控制线芯,21-绝缘线芯,211-控制导体,212-FEP挤包绝缘层,3-交联氟橡胶弹性体,4-排扰导体,5-交联氟橡胶弹性内护套,6-导电纤维缠绕屏蔽层,7-聚氨酯挤包外护套。In the figure: 1- power core, 11- power conductor, 12- XLPE inner insulation layer, 13-PPS outer insulation layer, 2- control core, 21- insulated core, 211- control conductor, 212- FEP extruded insulation layer, 3-cross-linked fluororubber elastomer, 4-drainage conductor, 5-cross-linked fluororubber elastic inner sheath, 6-conductive fiber winding shielding layer, 7-polyurethane extruded outer sheath.
具体实施方式Detailed ways
下面通过具体的实施例并结合附图对本发明做进一步的详细描述。The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.
为使本发明实施例的目的、技术方案和优点更加清楚,结合本发明实施例中的附图,对本发明实施例中的技术方案进行了清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are Some, but not all, embodiments of the present invention.
如图1所示,本发明实施例的高弹性恢复式防信号串扰多芯电缆,包括两个电源线芯1和两个控制线芯2围绕一个交联氟橡胶弹性体3共同绞合构成缆芯,进一步的,所述电源线芯1和所述控制线芯2的外径比为1:1至1.15:1,所述绝缘线芯21和所述交联氟橡胶弹性体3的外径比为1:1至1.25:1。所述电源线芯1包括电源导体11、交联聚乙烯内绝缘层12和PPS外绝缘层13,具体的说,所述电源导体11为若干直径为0.05mm至0.08mm镀锡铜单丝绞合构成。所述交联聚乙烯内绝缘层12和所述PPS外绝缘层13合计厚度为0.2mm至0.5mm。所述控制线芯2由两个绝缘线芯21对绞构成,所述绝缘线芯21包括控制导体211和FEP挤包绝缘层212,进一步的,所述绝缘线芯21绞向与所述缆芯绞向相同。具体的说,所述控制导体211为若干直径为0.02mm至0.04mm镀锡铜单丝同心绞合构成。所述FEP挤包绝缘层212厚度为0.1mm至0.3mm。所述交联氟橡胶弹性体3内套设有排扰导体4,具体的说,所述排扰导体3为若干软铜丝绞合并紧压形成圆形导体结构。As shown in FIG. 1 , the high-elasticity recovery type anti-signal crosstalk multi-core cable according to the embodiment of the present invention includes two power cores 1 and two
所述缆芯外部依次包覆有交联氟橡胶弹性内护套5、导电纤维缠绕屏蔽层6和聚氨酯挤包外护套7,所述交联氟橡胶弹性体3和所述交联氟橡胶弹性内护套5均包括内圆筒体和外圆筒体,所述内圆筒体和所述外圆筒体之间呈辐射状均布有若干连接板体。在一个实施方式中,所述导电纤维缠绕屏蔽层6为导电纤维束螺旋缠绕结构,所述导电纤维束为两种不同线径的聚丙烯腈基碳纤维绞合并涂覆铜导电涂层形成,所述聚丙烯腈基碳纤维的线径不超过25μm。The outside of the cable core is sequentially covered with a cross-linked fluororubber elastic
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
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