A network power composite cable

Abstract

The present application relates to a kind of net electricity composite cable, including outer sheath, outer shield layer, inner sheath, first tape and cable core in turn from outside to inside, the cable core includes the differential signal wire core, power line core, control line core and coaxial signal line core installed in the first tape inside, the differential signal wire core includes first shield layer, second tape, differential signal conductor and framework, the outside of the differential signal conductor is provided with first insulating layer, every two differential signal conductors are stranded together, constitute a pair of the differential signal conductor, the two sides of the framework are each provided with a pair of the differential signal conductor, the second tape is located the outside of the differential signal conductor and framework, the first shield layer is located the outside of the second tape.The present application has the characteristics such as high current high frequency flexibility pressure resistance.

Description

Technical Field

[0001] This invention relates to the field of cable structure technology, and in particular to a composite cable with electrical grid. Background Technology

[0002] With the accelerating pace of urbanization, urban planning is becoming increasingly modernized. During urban construction, the utilization rate of cables is rising. For construction sites, electricity is a prerequisite for ensuring construction safety and stability. Cables, in practical use, need to guarantee timely, efficient, and stable signal output. As a carrier of signal transmission, composite cables, installed in construction environments, are frequently moved and inevitably subjected to compression and friction, which can affect signal transmission. Conventional pressure-resistant cables have a galvanized steel tape armor layer added to the outside. While this armor layer is simple in structure and highly effective, its metallic nature increases the cable's weight, hindering its movement. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, one of the objectives of this invention is to provide a lightweight, interference-resistant composite cable.

[0004] The above-mentioned objective of this invention is achieved through the following technical solutions:

[0005] A composite cable includes, from the outside to the inside, an outer sheath, an outer shielding layer, an inner sheath, a first wrapping tape, and a cable core. The cable core includes differential signal cores, power cores, control cores, and coaxial signal cores installed inside the first wrapping tape. The differential signal core includes a first shielding layer, a second wrapping tape, differential signal conductors, and a skeleton. A first insulation layer is provided on the outside of the differential signal conductors. Every two differential signal conductors are twisted together to form a pair of differential signal conductors. A pair of differential signal conductors is provided on each side of the skeleton. The second wrapping tape is located outside the differential signal conductors and the skeleton, and the first shielding layer is located outside the second wrapping tape.

[0006] By adopting the above technical solution, a skeleton is added to the differential signal conductors formed by twisted pairs. This creates a good supporting and stable structure that supports the differential signal cores when the cable is under pressure, preventing the cable from deforming due to pressure. Simultaneously, the skeleton structure increases the air gap between the wire pairs, thereby reducing crosstalk interference. Furthermore, the use of twisted-pair cable as the signal carrier, based on the principle of differential signals, can cancel out the influence of other factors on the signal through cancellation.

[0007] In a preferred embodiment, the present invention can be further configured such that: the skeleton includes an intermediate isolation portion and a deformation portion, the differential signal conductors are respectively located on both sides of the isolation portion, the deformation portion is provided at both ends of the isolation portion, the deformation portion is arc-shaped, and the differential signal conductors are located inside the deformation portion.

[0008] By adopting the above technical solution, the isolation part can ensure the separation of the twisted differential signal conductors on both sides, reduce crosstalk interference, and the deformation parts at both ends can play a good protective role for the differential signal conductors during movement, thereby ensuring the service life of the product.

[0009] In a preferred embodiment, the present invention may be further configured such that: the coaxial signal core includes a hollow copper tube, the outside of the copper tube is extruded to form a second insulating layer, and a corrugated copper shielding layer is disposed outside the second insulating layer.

[0010] By adopting the above technical solution, the coaxial signal core is used to transmit high-frequency signals. When signals are transmitted within the conductor, a "skin effect" occurs, causing the signal to concentrate on the outer layer of the conductor, while little or no signal is present in the middle. Therefore, using a hollow copper tube saves materials and reduces costs without affecting signal transmission. Furthermore, to increase the bending performance of the coaxial cable, the coaxial signal core uses a corrugated copper shielding layer. The corrugated structure also reduces the wave impedance generated during signal transmission, improving the cable's signal transmission efficiency.

[0011] In a preferred embodiment, the present invention may be further configured such that: the control core includes a filler strip, a control conductor, a third wrapping tape, and a second shielding layer; the filler strip is located in the middle; six control conductors are disposed outside the filler strip; the third wrapping tape is disposed outside the control conductors; and the second shielding layer is disposed outside the third wrapping tape.

[0012] By adopting the above technical solution, the control core has a rubber strip as a filler strip in the middle, and the outer layer is made of six control conductors. Each control conductor is provided with an insulation layer to transmit the control signal of the device. After the filler strip and control conductors are cabled, a layer of non-hygroscopic wrapping tape is wrapped around it, and a second shielding layer is wrapped around the wrapping tape.

[0013] In a preferred embodiment, the present invention may be further configured such that the outer shielding layer comprises a plurality of grounding copper wires and aramid fibers, wherein the grounding copper wires are twisted together with the aramid fibers.

[0014] By adopting the above technical solution, in order to reduce the overall outer diameter and weight of the cable, the ground wire is split into smaller copper wires. The total area of ​​all copper wires is equal to the area of ​​the ground wire core. At the same time, the copper wires and aramid fibers are twisted together to form a "ground wire + aramid" combination. This "combination" is evenly spirally wrapped around the outside of the inner sheath of the cable. In this way, the copper wires in the combination can serve as both the ground wire core and the cable shield, while the aramid fibers can also increase the tensile strength of the cable.

[0015] In a preferred embodiment, the present invention can be further configured such that the ratio of the differential signal core, power core, control core, and coaxial signal core is 2:2:3:1.

[0016] By adopting the above technical solutions, the network-electric composite cable with this configuration ratio can not only achieve stable signal transmission, but also be lightweight and easy to transport. At the same time, it can ensure that the coaxial signal core transmission guarantees accurate and timely high-definition images and sounds on site.

[0017] In a preferred embodiment, the invention may be further configured such that the gaps inside the first packing tape are filled with grease.

[0018] By adopting the above technical solution, the filling grease can absorb heat and easily dissipate it, thereby reducing the cable operating temperature and increasing the current carrying capacity.

[0019] In a preferred embodiment, the invention may be further configured such that the outer sheath is a mixture of polyurethane material and fluorescent material.

[0020] By adopting the above technical solutions, polyurethane materials have good wear resistance, which can enhance the wear resistance of cables. Fluorescent materials can ensure that cables can be distinguished during nighttime construction, serving as a warning and ensuring cable safety.

[0021] In summary, the present invention has at least one of the following beneficial technical effects:

[0022] 1. In this invention, a skeleton is added inside the differential signal core to prevent the structure of the stranded core from changing when the cable is compressed, thereby affecting the signal distortion. At the same time, the gap between the stranded cores is increased to reduce the crosstalk between signals.

[0023] 2. In this invention, the ground wire is split into several small-section copper wires, the cross-sectional area of ​​which is equal to that of the ground wire. The copper wires are twisted together with aramid fibers, and the twisted structure is evenly spirally wrapped around the outer layer of the inner sheath, which serves to shield and reduce the outer diameter of the cable. In addition, the aramid fibers can also increase the tensile strength of the cable.

[0024] 3. This invention uses a hollow copper tube as the inner conductor and a corrugated copper shielding layer as the outer conductor to make a high-frequency coaxial cable, which increases the cable's bending performance and effectively increases the cable's transmission frequency, ensuring accurate and timely transmission of high-definition images and sounds on site.

[0025] 3. The outer sheath of the present invention is made of polyurethane material with good wear resistance, and the polyurethane is extruded together with fluorescent material, so that the cable emits fluorescence in a dark environment, thereby increasing the warning effect of the cable. Attached Figure Description

[0026] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0027] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0028] Figure 2 This is a schematic diagram of the structure of the outer shielding layer in this embodiment.

[0029] Figure 3 This is a schematic diagram of the differential signal core in this embodiment.

[0030] Figure 4 This is a schematic diagram of the control wire core in this embodiment.

[0031] Figure 5 This is a schematic diagram of the coaxial signal core in this embodiment.

[0032] The labels in the attached diagram are:

[0033] 1. Outer sheath; 2. Outer shielding layer; 21. Grounding copper wire; 22. Aramid yarn; 3. Inner sheath; 4. First wrapping tape; 51. Differential signal core; 511. First shielding layer; 512. Second wrapping tape; 513. Differential signal conductor; 514. Skeleton; 5141. Isolation section; 5142. Deformation section; 515. First insulation layer; 52. Power core; 53. Control core; 531. Filler strip; 532. Control conductor; 533. Third wrapping tape; 534. Second shielding layer; 54. Coaxial signal core; 541. Copper tube; 542. Second insulation layer; 543. Corrugated copper shielding layer. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Reference Figures 1-5The present invention discloses a composite cable for electrical and electronic communication, comprising, from the outside to the inside, an outer sheath 1, an outer shielding layer 2, an inner sheath 3, a first wrapping tape 4, and a cable core. The cable core includes a differential signal core 51, a power core 52, a control core 53, and a coaxial signal core 54 installed inside the first wrapping tape 4. The ratio of the differential signal core 51, power core 52, control core 53, and coaxial signal core 54 is 2:2:3:1, and the gaps between the differential signal core 51, power core 52, control core 53, and coaxial signal core 54 are filled with grease. The outer shielding layer 2 includes several grounding copper wires 21 and aramid fibers 22, which are twisted together. The outer sheath 1 is made of a mixture of polyurethane material and fluorescent material.

[0036] As a carrier of electricity, this type of cable is characterized by high current carrying capacity. High current carrying capacity refers to high current-carrying capacity, which is related not only to the cross-sectional area of ​​the cable conductor but also to the cable's heat dissipation capability. When transmitting the same current, a larger cross-sectional area conductor has lower resistance, reducing the obstacles encountered during current transmission. Reduced obstacles mean less heat generation during current transmission, allowing more current to be used for power transmission rather than unnecessary heat generation. Therefore, enhancing the cable's heat dissipation capability allows for the transmission of more current with the same cross-sectional area, achieving the same current transmission capacity with a smaller cross-section. This is further supported by filling the cable with grease, which, due to its molecular structure, can absorb more heat and dissipate it. Filling the cable with grease also seals any gaps, reducing heat retention by air. Furthermore, to ensure the safety of power transmission, reliable grounding of the cable is crucial. The conventional method is to use a conductor with a slightly smaller cross-section than the main conductor as the ground wire. However, under normal circumstances, no current flows through the ground wire, and this structure increases the cable's outer diameter when bundled with the main conductor. Based on this, the ground wire is split into smaller grounding copper wires 21, the total area of ​​which is equal to the area of ​​the ground wire. These grounding copper wires 21 are then spirally wound around the outside of the cable and armored with aramid yarn 22. This reduces the cable's outer diameter while still providing ground wire protection, shielding, and some tensile strength. As a cable for nighttime construction, fluorescent material is added to the cable sheath, allowing the cable surface to glow at night, serving as a warning in complex construction environments. Furthermore, due to frequent movement, the cable requires good abrasion resistance; therefore, using polyurethane material with excellent abrasion resistance reduces cable wear.

[0037] The differential signal core 51 includes a first shielding layer 511, a second wrapping tape 512, a differential signal conductor 513, and a frame 514. A first insulating layer 515 is provided on the outside of the differential signal conductor 513. Every two differential signal conductors 513 are twisted together to form a pair of differential signal conductors 513. A pair of differential signal conductors 513 are provided on each side of the frame 514. The second wrapping tape 512 is located outside the differential signal conductors 513 and the frame 514. The first shielding layer 511 is located outside the second wrapping tape 512. The frame 514 includes an isolation part 5141 and a deformation part 5142 in the middle. The differential signal conductors 513 are located on both sides of the isolation part 5141. Deformation parts 5142 are provided at both ends of the isolation part 5141. The deformation parts 5142 are arc-shaped, and the differential signal conductors 513 are located inside the deformation parts 5142.

[0038] As a carrier of signal transmission, this type of cable is frequently moved due to its installation in construction environments and is inevitably subject to compression and friction. Under these circumstances, signal transmission is affected. Therefore, improving the cable's compressive strength ensures the stability of the cable structure and prevents signal distortion due to structural deformation. Conventional pressure-resistant cables add a galvanized steel tape armor layer to the outside of the cable. While this armor layer is simple in structure and highly effective, its metallic nature increases the cable's weight, which can hinder the movement of the cable. Therefore, a skeleton 514 is added to the outside of the differential signal conductor 513, forming a stable triangular structure that supports the differential signal core 51 when the cable is under pressure, preventing deformation of the differential signal conductor 513. Simultaneously, the skeleton 514 structure increases the air gap between wire pairs, thereby reducing crosstalk interference between wire pairs. Furthermore, the signal transmission carrier utilizes a twisted-pair structure. This structure applies the principle of differential signals, which can cancel out the influence of other factors on the signal through cancellation.

[0039] The coaxial signal core 54 includes a hollow copper tube 541, with a second insulation layer 542 extruded around the copper tube 541. A corrugated copper shielding layer 543 is then disposed outside the second insulation layer 542. As a carrier for transmitting real-time image and sound signals, high-frequency electromagnetic waves are used to reduce wavelength and transmit more information. For construction environments, the complex and ever-changing environment is a major characteristic, especially at night. Clear and stable real-time image and sound transmission ensures the accuracy and timeliness of monitoring. Therefore, by adding the coaxial signal core 54, the "skin effect" occurs when the signal is transmitted through the conductor due to the high transmission frequency. This effect causes the signal to concentrate on the outer layer of the conductor, while little or no signal exists in the middle. Therefore, using a hollow copper tube 541 saves materials and reduces costs without affecting signal transmission, increasing the conductor's utilization rate for high-frequency signals. Furthermore, to increase the bending performance of the coaxial cable, the shielding uses a corrugated copper tube 541. The corrugated structure also reduces the wave impedance generated during signal transmission, improving the cable's signal transmission efficiency and flexibility.

[0040] The control core 53 includes a filler strip 531, a control conductor 532, a third wrapping tape 533, and a second shielding layer 534. The filler strip 531 is located in the middle, and six control conductors 532 are arranged on the outside of the filler strip 531. The third wrapping tape 533 is arranged on the outside of the control conductors 532, and the second shielding layer 534 is arranged on the outside of the third wrapping tape 533. The power core 52 is made by extruding an insulation layer on the conductor to transmit electrical energy, which facilitates the transmission of power supply and control signals.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hybrid power over data line cable, characterized by: The cable comprises, from outside to inside, an outer sheath (1), an outer shielding layer (2), an inner sheath (3), a first wrapping tape (4) and a cable core, the cable core comprises a differential signal wire core (51), a power wire core (52), a control wire core (53) and a coaxial signal wire core (54) installed inside the first wrapping tape (4), the differential signal wire core (51) comprises a first shielding layer (511), a second wrapping tape (512), a differential signal conductor (513) and a backbone (514), the differential signal conductor (513) is provided with a first insulation layer (515) outside, and each two differential signal conductors (513) are twisted together to form a pair of differential signal conductors (513), and the backbone (514) is provided with a pair of differential signal conductors (513) on both sides, and the second wrapping tape (512) is located outside the differential signal conductor (513) and the backbone (514), and the first shielding layer (511) is located outside the second wrapping tape (512); The backbone (514) comprises a middle isolation part (5141) and a deformation part (5142), the differential signal conductors (513) are located on both sides of the isolation part (5141), the deformation parts (5142) are arranged at both ends of the isolation part (5141), the deformation parts (5142) are arranged in an arc shape, and the differential signal conductors (513) are located inside the deformation parts (5142); the backbone (514) is added outside the differential signal conductor (513), so that a stable triangular structure is formed, and the differential signal wire core (51) is supported when the cable is subjected to pressure, so that the differential signal conductor (513) is prevented from being deformed due to the pressure; The proportion of the differential signal wire core (51), the power wire core (52), the control wire core (53) and the coaxial signal wire core (54) is 2:2:3:1; The outer shielding layer (2) comprises a plurality of ground copper wires (21) and aramid wires (22), the ground copper wires (21) and the aramid wires (22) are twisted together, the ground wire is divided into smaller ground copper wires (21), the total area of the ground copper wires (21) is equal to the area of the ground wire, and the twisted structure is uniformly spirally wrapped outside the inner sheath (3).

2. The network power composite cable of claim 1, wherein: The coaxial signal wire core (54) comprises a hollow copper pipe (541), the copper pipe (541) is extruded to form a second insulation layer (542) outside, and the second insulation layer (542) is provided with a corrugated copper shielding layer (543) outside.

3. The network power composite cable of claim 1, wherein: The control wire core (53) comprises a filling strip (531), a control conductor (532), a third wrapping tape (533) and a second shielding layer (534), the filling strip (531) is located in the middle, six control conductors (532) are arranged outside the filling strip (531), the third wrapping tape (533) is arranged outside the control conductors (532), and the second shielding layer (534) is arranged outside the third wrapping tape (533).

4. The network power composite cable of claim 1, wherein: The gap inside the first wrapping tape (4) is filled with ointment.

5. The network power composite cable of claim 1, wherein: The outer sheath (1) is made of a mixture of polyurethane material and fluorescent material.

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