Copper cable structure assembly for data transmission

Abstract

The utility model belongs to the technical field of communication, and provides a copper cable structure assembly for data transmission, which comprises a cable core formed by twisting a plurality of wire pairs and filling ropes, each wire pair is composed of an insulating wire core formed by at least two conductors and an insulating layer, a first polyester belt and a sub-shielding layer, and the conductors of the insulating wire core are made of silver-plated copper; the insulating layer is made of a foamed polyethylene material and is prepared by a nitrogen physical foaming process; the branch shielding layer wraps the first polyester belt. Compared with the prior art, the cable has the advantages that the silver-plated copper conductor is adopted to improve conductivity and oxidation resistance, and stable transmission of signals at high frequency is ensured; meanwhile, foamed polyethylene is used as an insulating material, and a nitrogen physical foaming process is adopted for preparation, so that the density is reduced, the electrical performance is improved, the signal attenuation is reduced, the design of twisted pairs with different pitches is accurately controlled, the skin effect and the proximity effect are reduced, and the phenomenon of signal crosstalk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to communication technical field, concretely relates to a copper cable structure assembly for data transmission. BACKGROUND

[0002] With the rapid development of information technology, especially the rapid development of cloud computing, big data and artificial intelligence, the requirement for data transmission rate is higher and higher. Although the traditional copper cable has cost advantage, there are some inherent problems in high-frequency signal transmission:

[0003] 1. Signal attenuation: due to the resistance effect of conductor material and the dielectric loss of insulating material, the signal strength will gradually weaken in the process of high-frequency signal transmission of traditional copper cable, which affects the quality and distance of data transmission.

[0004] 2. Crosstalk: when multiple cables are laid in parallel, the signals between adjacent cables may interfere with each other, resulting in data errors or loss. This phenomenon is particularly evident in high-frequency signal transmission, which seriously affects the reliability of transmission.

[0005] 3. Electromagnetic interference: electromagnetic interference refers to the influence of external electromagnetic field on signal transmission. Traditional copper cable lacks effective shielding measures and is easily disturbed by external electromagnetic environment, resulting in unstable or even interrupted data transmission. INVENTION CONTENT

[0006] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a copper cable structure assembly for high-frequency data transmission with excellent attenuation performance, low delay and anti-interference.

[0007] The utility model solves the technical problems by adopting the technical scheme of providing a copper cable structure assembly for data transmission, comprising: a cable core formed by twisting a plurality of wire pairs and filling ropes, wherein each wire pair is composed of an insulated core formed by at least two conductors and an insulating layer, a first polyester tape and a sub-shielding layer, the conductors of the insulated core are made of silver-plated copper; the insulating layer is made of foamed polyethylene material and prepared by nitrogen physical foaming process; the sub-shielding layer is wrapped around the first polyester tape; the pitch between the wire pairs at different positions is set inconsistently.

[0008] The cable core is sequentially covered with a second polyester tape, a shielding total layer and a sheath layer from the inside to the outside.

[0009] In the above-mentioned copper cable structure assembly for data transmission, the twisted wire of the insulated core is overlapped and wrapped with a layer of first polyester tape with a covering rate of 15%.

[0010] In the copper cable structure assembly for data transmission, the filling ropes are polypropylene filling ropes, and the plurality of insulated cores are arranged between the polypropylene filling ropes and are collectively twisted into the cable core.

[0011] In the copper cable structure assembly for data transmission, the first polyester tape is woven with a layer of the partial shielding layer by using the tinned soft copper wire, so that the electromagnetic interference and internal signal crosstalk are prevented.

[0012] In the copper cable structure assembly for data transmission, the weaving density of the partial shielding layer is greater than or equal to 60%.

[0013] In the copper cable structure assembly for data transmission, the cable core is overlapped and wrapped with the second polyester tape with a lap coverage of 20%.

[0014] In the copper cable structure assembly for data transmission, the shielding total layer is composed of an aluminum foil shielding layer and a woven copper mesh shielding layer, and the cable core wrapped with the second polyester tape is sequentially longitudinally wrapped with the aluminum foil shielding layer, and the woven copper mesh shielding layer is sequentially woven on the aluminum foil shielding layer.

[0015] In the copper cable structure assembly for data transmission, the woven copper mesh shielding layer is woven with a layer of tinned soft copper wire with a weaving density greater than or equal to 80%.

[0016] In the copper cable structure assembly for data transmission, the sheath layer is made of polyvinyl chloride material.

[0017] In the copper cable structure assembly for data transmission, the sheath layer is made of low-smoke halogen-free material.

[0018] Compared with the prior art, the copper cable structure assembly for data transmission has the following beneficial effects:

[0019] (1) The copper cable structure assembly for data transmission uses silver-plated copper conductors to improve conductivity and oxidation resistance, ensuring stable transmission of signals at high frequencies; foamed polyethylene is used as an insulating material, and is prepared by a nitrogen physical foaming process, which reduces density, improves electrical performance and reduces signal attenuation, and the design of the twisted pair line with different pitches reduces the skin effect and proximity effect, and the structure design of the shielding layer effectively reduces the signal crosstalk phenomenon.

[0020] (2) The partial shielding layer with a weaving density of not less than 60% can further prevent electromagnetic interference and internal signal crosstalk.

[0021] (3) The sheath layer uses wear-resistant and high-temperature-resistant polyvinyl chloride or low-smoke halogen-free material, effectively improving the durability and safety of the cable, and being conducive to forming a complete cable structure. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present application.

[0023] In the figure, 1, wire pair; 10, insulated wire core; 100, conductor; 101, insulation layer; 11, first polyester tape; 12, partial shielding layer; 2, filling rope; 3, second polyester tape; 4, shielding total layer; 40, aluminum foil shielding layer; 41, braided copper mesh shielding layer; 5, sheath layer. DETAILED DESCRIPTION

[0024] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0026] As Figure 1 shown, the utility model discloses a copper cable structure assembly for data transmission, its characterized in that, including: by several wire pairs 1 and filling rope 2 is twisted and formed cable core, wherein, each wire pair 1 is by at least two conductors 100 and insulation layer 101 form insulated wire core 10 and first polyester tape 3, partial shielding layer 12 is composed, and the conductor 100 of insulated wire core 10 adopts silver-plated copper;Insulation layer 101 adopts foamed polyethylene material, and is prepared by nitrogen physical foaming process;Partial shielding layer 12 is wrapped in first polyester tape 11;The pitch between wire pair 1 of different positions is not set in unison;Cable core is covered with second polyester tape 3, shielding total layer 4 and sheath layer 5 in turn from inside to outside.

[0027] The scheme is mainly to provide a kind of can be for data center high-speed interconnection, high-speed network communication equipment, high-performance computing and storage system communication. Specifically, the embodiment adopts twisted pair 1 (of course, the number is not limited to one in the embodiment, can be adjusted according to actual demand corresponding design has multiple groups), each insulated core 10 contains at least two silver-plated copper conductors 100, silver-plated copper conductor 100 has good high conductivity, oxidation resistance, corrosion resistance and good welding performance, which can effectively reduce resistance and reduce signal loss, thereby helping to improve transmission efficiency and improve signal transmission quality;And the insulating layer 101 uses foamed polyethylene as insulating material, and is prepared by nitrogen physical foaming process, introduces micro bubble structure in the insulating layer 101, which reduces the density of insulating material, improves the electrical performance of the cable, especially in high frequency signal transmission, has low dielectric constant, low attenuation, light weight, good flexibility, good heat resistance and mechanical strength;Then, a plurality of insulated cores 10 are twisted at a specific pitch, so that the pitch of different position wire pairs is set inconsistently (the pitch difference can be understood as Figure 1 The tightness of the two wire pairs 1 insulated cores 10 is different), to reduce skin effect and proximity effect. This design helps to reduce signal crosstalk and loss in high frequency signal transmission, with the coverage of the first polyester tape 11, finally wrapped with the second polyester tape 3, the shielding total layer 4 and the sheath layer 5 from inside to outside, increase the flexibility and tensile strength of the cable, also improve the stability of the internal structure of the cable.

[0028] It should be noted that the skin effect in the embodiment refers to the phenomenon that when alternating current passes through the conductor 100, the current tends to concentrate on the surface of the conductor 100. This phenomenon is particularly evident in high frequency circuits, because as the current frequency increases, the current will gradually concentrate on the surface of the conductor 100, while the current in the conductor 100 decreases. The proximity effect refers to the phenomenon that the alternating current of the two conductors 100 of the double line transmission line approaches each other. The higher the frequency and magnetic permeability, the smaller the resistivity coefficient, and the more significant the phenomenon.

[0029] Preferably, as Figure 1As shown, the embodiment also overlaps and wraps a first polyester tape 11 with a 15% coverage rate outside the stranded insulated core 10. That is, using a dedicated wrapping device (not shown in the figure), adjusting the device parameters to achieve a wrapping effect with a 15% coverage rate; the coverage rate refers to the overlapping ratio between two adjacent wrapping layers, and a 15% coverage rate means that each wrapping layer covers 15% of the previous layer. The first polyester tape 10 provides additional mechanical protection for the stranded insulated core 10. It can effectively prevent the insulation layer 101 from being physically damaged (such as scratching, wear and tear, etc.), prolonging the service life of the cable; while the 15% coverage rate can ensure good protection effect while avoiding excessive wrapping that leads to material waste and increased cable diameter, and a reasonable coverage rate also ensures the tightness and consistency of the wrapping layer, enhancing the stability of the overall structure.

[0030] Further preferably, as Figure 1 As shown, the embodiment also uses a layer of sub-shielding layer 13 woven with tinned soft copper wire outside the first polyester tape 11, that is, after starting the weaving device (not shown in the figure), the tinned soft copper wire is uniformly woven on the outer surface of the first polyester tape 11, forming a tight mesh structure, and during the weaving process, a constant speed and tension are maintained to ensure the weaving quality; preferably, the weaving density of the sub-shielding layer 13 is more than 60%, that is, during this process, the worker can monitor the weaving process in real time to ensure that the weaving density is stable at more than 60%, if there is a deviation, the device parameters (such as weaving speed, tension, etc.) are adjusted in time, and after the weaving is completed, the tinned soft copper wire is cut off and quality detection is performed to ensure the continuity and integrity of the weaving layer. It is worth noting that the tinned soft copper wire in this embodiment has good electrical conductivity and oxidation resistance, which can effectively block external electromagnetic interference (EMI), and the weaving density is not less than 60%, which ensures the continuity and integrity of the shielding layer, thereby minimizing the influence of external electromagnetic fields on signal transmission. As can be seen, the sub-shielding layer 13 not only effectively protects against external electromagnetic interference, but also significantly reduces mutual interference (crosstalk) between internal signals, improving the stability and reliability of data transmission. Especially in a high-density wiring environment, this design is particularly important.

[0031] The filling rope 2 uses a polypropylene filling rope 2, and a plurality of insulated cores 10 are arranged between the polypropylene filling rope 2 to be collectively stranded into a cable core.

[0032] As Figure 1As shown, with the start of the stranding device (not shown in the figure), the insulated wire core 10 and the polypropylene filler rope 2 are stranded at a specific pitch and direction, and during the stranding process, a constant speed and tension are also required to ensure that the final stranding quality meets the required use requirements (i.e. the cable core after stranding is round and compact in structure), the polypropylene filler rope 2 in this embodiment has good flexibility and support performance, which can effectively fill the gap between the insulated wire core 10, making the overall cable core more round and compact. This design not only improves the appearance quality of the cable, but also enhances the mechanical strength and tensile strength of the cable. In addition, the polypropylene filler rope 2 plays a supporting and fixing role during the stranding process, preventing relative movement between the insulated wire core 10, ensuring the stability and consistency of the internal structure of the cable.

[0033] Preferably, as Figure 1 shown, the cable core is further overlapped with a second polyester tape 3 with a 20% overlap rate for wrapping, which makes the cable core more compact after wrapping, plays a role in protecting the insulated wire core 10, and effectively prevents the cable core from being physically damaged (such as scratching, wear and tear, etc.), prolonging the service life of the cable. In addition to providing mechanical protection, the second polyester tape 3 with a 20% overlap rate also increases the compactness and roundness of the cable core to some extent, which makes the cable more stable during subsequent processing and installation, reduces the relative movement of internal components, and improves the overall performance of the cable.

[0034] The shielding total layer 4 is composed of an aluminum foil shielding layer 40 and a woven copper mesh shielding layer 41, and the cable core wrapped with the second polyester tape 3 is sequentially longitudinally wrapped with an aluminum foil shielding layer 40, and the woven copper mesh shielding layer 41 is overlaid on it.

[0035] Preferably, the cable core wrapped with the second polyester tape 3 structure is sequentially longitudinally wrapped with an aluminum foil shielding layer 40, which has good electrical conductivity and reflection characteristics, and can effectively block external electromagnetic interference. It can reflect most of the incident electromagnetic waves, thereby reducing the influence of external electromagnetic fields on signal transmission, and the woven copper mesh shielding layer 41 not only provides additional electromagnetic shielding function, but also enhances the overall mechanical strength. Therefore, the combination of the aluminum foil shielding layer 40 and the woven copper mesh shielding layer 41 forms a double shielding protection, significantly improving the anti-electromagnetic interference ability of the cable, especially suitable for application in high electromagnetic interference environment; not only effectively protects against external electromagnetic interference, but also significantly reduces mutual interference (crosstalk) between internal signals, improving the stability and reliability of data transmission.

[0036] Further preferably, after the aluminum foil shielding layer 40 is completed, a layer of soft tin-plated copper wire with a density of not less than 80% can be braided again to form a combined total shielding layer. The soft tin-plated copper wire can not only reflect most of the incident electromagnetic waves, but also reduce the influence of electromagnetic interference by absorbing part of the electromagnetic energy, thereby significantly improving the anti-electromagnetic interference capability of the cable. Preferably, the current passing through the wire pair core is relatively large, and a magnetic field can be generated around the current. In order to not affect the normal work of other elements, the signal conductor (not shown in the figure) can be wrapped inside the shielding layer, thereby playing a role in preventing electromagnetic noise interference.

[0037] Further preferably, the embodiment also extrudes a sheath layer 5 (i.e., an outer sheath) outside the cable core. The outer sheath can be made of polyvinyl chloride (PVC) material or low-smoke zero-halogen (LSZH) material. The PVC material has high wear resistance and certain tensile resistance, which can provide additional protection when the cable is subjected to tension, prevent damage to the internal structure, and prolong the service life of the cable. The high-quality low-smoke zero-halogen (LSZH) compound ensures that it has good mechanical properties, electrical insulation properties, and environmental protection properties, and is not only suitable for short-distance high-speed data transmission scenarios (such as internal connections in data centers), but can also be extended to other fields that require efficient and reliable data transmission, such as SATA storage devices, RAID systems, core routers, and 10G or 40G Ethernet, etc.

[0038] It should be noted that the descriptions such as "first", "second", "one", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. The terms "connection", "fixation", etc. should be broadly understood, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or changes in the specific embodiments described herein can occur to those skilled in the art to which the application pertains without departing from the spirit of the application, and it is understood that such modifications or changes are to be considered as within the scope of the application as defined by the appended claims.

Claims

1. A copper cable structure assembly for data transmission, characterized by, The application relates to a cable core formed by twisting a plurality of wire pairs and filling ropes, wherein each wire pair is composed of an insulated wire core formed by at least two conductors and an insulating layer, and a first polyester tape and a partial shielding layer; the conductors of the insulated wire core are silver-plated copper; the insulating layer is prepared by a nitrogen physical foaming process and is foamed polyethylene material; the partial shielding layer is wrapped on the first polyester tape; the pitches between the wire pairs at different positions are not set to be consistent; the cable core is sequentially covered with a second polyester tape, a shielding total layer and a sheath layer from inside to outside. The insulated wire core is overlapped and wrapped with the first polyester tape with a 15% overlapping rate. The filling ropes are polypropylene filling ropes, and the plurality of insulated wire cores are arranged between the polypropylene filling ropes to be twisted into the cable core.

2. The copper cable construction assembly of claim 1, wherein, The first polyester tape is woven with the partial shielding layer outside to prevent electromagnetic interference and internal signal crosstalk.

3. The copper cable construction assembly of claim 1, wherein, The weaving density of the partial shielding layer is above 60%.

4. The copper cable structure assembly of claim 1 or 2, wherein, The cable core is overlapped and wrapped with the second polyester tape with a 20% overlapping rate.

5. A copper cable construction assembly for data transmission according to claim 4, wherein, The shielding total layer is composed of an aluminum foil shielding layer and a woven copper mesh shielding layer, and the cable core wrapped with the second polyester tape is sequentially longitudinally wrapped with the aluminum foil shielding layer and the woven copper mesh shielding layer.

6. The copper cable construction assembly of claim 4, wherein, The woven copper mesh shielding layer is woven with a layer of tin-plated soft copper wire with a weaving density above 80%.

7. The copper cable construction assembly of claim 1, wherein, The sheath layer is polyvinyl chloride material.

8. A copper cable construction assembly for data transmission according to claim 7, wherein, The sheath layer is low-smoke halogen-free material.

9. The copper cable construction assembly of claim 1, wherein, ​ 10. The copper cable construction assembly of claim 1, wherein, ​

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