CN220324182U - High-frequency signal low-attenuation 4-core insulated cable - Google Patents
High-frequency signal low-attenuation 4-core insulated cable Download PDFInfo
- Publication number
- CN220324182U CN220324182U CN202321587632.3U CN202321587632U CN220324182U CN 220324182 U CN220324182 U CN 220324182U CN 202321587632 U CN202321587632 U CN 202321587632U CN 220324182 U CN220324182 U CN 220324182U
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- 239000004020 conductor Substances 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- -1 polyethylene Polymers 0.000 claims abstract description 7
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- 239000000805 composite resin Substances 0.000 claims abstract description 6
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 6
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 6
- 229920000573 polyethylene Polymers 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000077 silane Inorganic materials 0.000 claims abstract description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 54
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 7
- 239000011889 copper foil Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 230000017105 transposition Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000011162 core material Substances 0.000 abstract 20
- 238000009413 insulation Methods 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
The utility model discloses a high-frequency signal low-attenuation 4-core insulated cable, which comprises two power supply wire cores, a signal wire core and an iron powder polyethylene composite resin core material which are twisted together to form a cable core, wherein the outside of the cable core is sequentially coated with a total shielding reticular conductor layer and a silane grafted crosslinked high-density polyethylene sheath layer, the signal wire core comprises two insulated wire cores which are arranged in parallel and are uniformly distributed in a cross shape with two filling wire cores to form a wire core body together, the outside of the wire core body is sequentially coated with a PET resin tape wrapping layer and a shielding reticular conductor layer, the outer diameter of the power supply wire core is smaller than the outer diameter of the insulated wire core, the outer diameter of the power supply wire core is 0.8-1.6 mm, the outer diameter of the insulated wire core is 1.4-1.8 mm, and the axis connecting line of the power supply wire core and the signal wire core is trapezoidal on the longitudinal section of the cable core. The cable core structure of the cable is more balanced, each wire core is balanced in stress, long-distance transmission attenuation of high-frequency signals is effectively reduced, and the durability is better.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a low-attenuation 4-core insulated cable for high-frequency signals.
Background
The control cable is used as a connecting wire between various electric appliances, instruments, meters and automatic devices, plays a role in transmitting various electric energy signals such as starting, operation, control, signal display, measurement and the like, and is widely applied to control, measurement, signal transmission, alarm and interlocking systems of industrial and mining enterprises, transformer stations, traffic, science and technology departments and the like. However, the electromagnetic noise environment of an industrial application site is often quite complex, and the radiation or conduction (EMI) of electromagnetic noise may severely interfere with the proper operation of the device. In this process, an important type of carrier for electromagnetic noise propagation is the various cables used in the production line equipment. Some of them are noise sources and some are disturbed objects. To combat electromagnetic noise interference on electrical lines, a very important way is to use cables with shielding. In the multi-core cable, because each power wire core and each signal wire core with different outer diameters are asymmetrically stranded to form a cable core, the peripheral distance between a shielding layer outside the cable core and the cable core is not uniform, the long-distance transmission attenuation of the high-frequency signals of the signal wire cores is easy to cause, the electrical characteristics of the cable are influenced, and the cable needs to be improved.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the high-frequency signal low-attenuation 4-core insulated cable, which has more balanced cable core structure and balanced stress of each wire core, effectively reduces the attenuation of long-distance transmission of the high-frequency signal and has better durability.
The utility model solves the technical problems through the following technical proposal.
The utility model provides a high-frequency signal low attenuation 4 core insulated cable, includes two power supply core, a signal core and the common transposition of iron powder polyethylene composite resin core constitute the cable core, the outside cladding of cable core has total shielding netted conductor layer and silane grafting crosslinked high density polyethylene restrictive coating in proper order, the signal core includes two insulating core parallel arrangement and is cross equipartition and jointly forms the core body with two packing core strips, the outside cladding of core body has PET resin tape around covering and branch shielding netted conductor layer in proper order, the power supply core external diameter is less than insulating core external diameter, the power supply core external diameter is 0.8mm to 1.6mm, insulating core external diameter is 1.4mm to 1.8mm, on the cable core longitudinal section the power supply core with the axle center line of signal core is trapezoidal.
Preferably, the power supply wire core comprises an inner conductor and an XLPE insulating layer, and insulating lubricating silicone grease is filled between the inner conductor and the XLPE insulating layer.
Preferably, the inner conductor is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.02mm to 0.08 mm.
Preferably, the insulated wire core comprises a central conductor, a PFA inner insulating layer and a PP outer insulating layer, and insulating lubricating silicone grease is filled between the central conductor and the PFA inner insulating layer.
Preferably, the central conductor is formed by twisting a plurality of tinned copper wires with the wire diameter of 0.05mm to 0.1mm, and the twisting distance of the tinned copper wires is 20 to 50 times of the wire diameter.
Preferably, the PFA inner insulation layer has a thickness of 1.5 to 2 times the thickness of the PP outer insulation layer.
Preferably, the PET resin tape wrapping layer is of a PET resin tape unidirectional spiral lapping and wrapping structure, and the wrapping direction of the PET resin tape wrapping layer is the same as the twisting direction of the cable core.
Preferably, a thermoplastic polyurethane adhesive layer is provided on the outer surface of the PET resin band.
Preferably, the total shielding reticular conductor layer and the sub-shielding reticular conductor layer are formed by mutually and reversely spirally winding and braiding polyester fiber copper foil wires and tinned copper wires, and the wire diameters of the polyester fiber copper foil wires and the tinned copper wires are different and the wire diameter ratio is between 0.9 and 1.
Preferably, the outer diameter of the power wire core is 1mm to 1.5mm, and the outer diameter of the insulating wire core is not less than 1.5mm.
The utility model has the beneficial effects that:
1. through optimizing cable core structure, make the power core external diameter be less than insulating core external diameter, the rational arrangement power core external diameter is 0.8mm to 1.6mm and insulating core external diameter is 1.4mm to 1.8mm, and make the axle center line of power core and signal core be trapezoidal, jointly with the equispaced cable core of iron powder polyethylene composite resin core transposition formation cable core, ensure cable core inner structure equilibrium, the stress can more evenly distributed on signal core and power core, and make total shielding netted conductor layer fit contact branch shielding netted conductor layer, avoid using the drain wire, shielding layer and cable core peripheral distance keep the homogeneity, be of value for reducing high frequency signal long distance transmission attenuation, guarantee noise shielding's stability, ensure cable's electrical property, the durability is better.
2. Through be cross symmetry with two insulating sinle silk inside at signal sinle silk and add two packing core bars for sinle silk body section structure is more balanced, is favorable to reducing high frequency signal attenuation, improves signal sinle silk's electrical property, improves the durability.
And 3. The PET resin tape wrapping layer is favorable for reducing local stress concentration of the shielding net-shaped conductor layer, improving flexibility, reducing broken wire breakage of the shielding net-shaped conductor layer, and being the same as the cable core in the wrapping direction, the PET resin tape wrapping layer is favorable for preventing the PET resin tape wrapping layer from loosening and ensuring stable high-frequency transmission characteristics.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.
In the figure: the high-density polyethylene cable comprises a 1-power wire core, a 2-signal wire core, a 3-iron powder polyethylene composite resin core, a 4-total shielding reticular conductor layer, a 5-silane grafted crosslinked high-density polyethylene sheath layer, a 6-insulating wire core, 7-filling core strips, an 8-PET resin tape wrapping layer, a 9-shielding reticular conductor layer, a 10-inner conductor, an 11-XLPE insulating layer, a 12-center conductor, a 13-PFA inner insulating layer and a 14-PP outer insulating layer.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the high-frequency signal low-attenuation 4-core insulated cable comprises two power wire cores 1, one signal wire core 2 and an iron powder polyethylene composite resin core 3 which are twisted together to form a cable core. In one embodiment, the power cord 1 includes an inner conductor 10 and an XLPE insulation layer 11, and insulating lubricating silicone grease is filled between the inner conductor 10 and the XLPE insulation layer 11, specifically, the inner conductor 10 is formed by twisting a plurality of tin-plated copper monofilaments with diameters of 0.02mm to 0.08 mm. The signal wire core 2 includes two insulating wire cores 6 parallel arrangement and form the sinle silk body jointly with two packing core bars 7 are cross equipartition, in an embodiment, insulating wire core 6 includes center conductor 12, PFA inner insulation layer 13 and PP outer insulation layer 14, center conductor 12 with pack between the PFA inner insulation layer 13 and have insulating lubrication silicone grease, further, PFA inner insulation layer 13 thickness is 1.5 times to 2 times of PP outer insulation layer 14 thickness. Specifically, the central conductor 12 is formed by twisting a plurality of tinned copper wires with the wire diameter of 0.05mm to 0.1mm, and the twisting pitch of the tinned copper wires is 20 to 50 times of the wire diameter. The outside cladding of sinle silk body has in proper order PET resin area around covering 8 and divides shielding netted conductor layer 9, in an embodiment, PET resin area around covering 8 is PET resin area unidirectional spiral and takes the lid around the package structure, further, be equipped with thermoplastic polyurethane adhesive linkage on the PET resin area outward appearance, PET resin area around covering 8 winds to be the same with the cable core hank. The outer diameter of the power wire core 1 is smaller than the outer diameter of the insulating wire core 6, the outer diameter of the power wire core 1 is 0.8mm to 1.6mm, the outer diameter of the insulating wire core 6 is 1.4mm to 1.8mm, preferably, the outer diameter of the power wire core 1 is 1mm to 1.5mm, and the outer diameter of the insulating wire core 6 is not smaller than 1.5mm. And the axis connecting line of the power wire core 1 and the signal wire core 2 on the longitudinal section of the cable core is trapezoidal.
The cable core is sequentially coated with a total shielding reticular conductor layer 4 and a silane grafted crosslinked high-density polyethylene sheath layer 5, and in one implementation mode, the total shielding reticular conductor layer 4 and the shielding reticular conductor layer 9 are formed by mutually spirally winding and braiding polyester fiber copper foil wires and tinned copper wires in a reverse direction, and the wire diameters of the polyester fiber copper foil wires and the tinned copper wires are different and the wire diameter ratio is between 0.9 and 1.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. The utility model provides a 4 core insulated cable of high frequency signal low attenuation which characterized in that: including two power core (1), a signal core (2) and the common transposition of iron powder polyethylene composite resin core (3) constitute the cable core, the outside cladding of cable core has total shielding netted conductor layer (4) and silane grafting crosslinked high density polyethylene restrictive coating (5) in proper order, signal core (2) are parallel setting and are cross equipartition and form the sinle silk body jointly with two packing core strips (7) including two insulating sinle silk (6), the outside cladding of sinle silk body has PET resin tape around covering (8) and branch shielding netted conductor layer (9) in proper order, power core (1) external diameter is less than insulating sinle silk (6) external diameter, power core (1) external diameter is 0.8mm to 1.6mm, insulating sinle silk (6) external diameter is 1.4mm to 1.8mm, on the cable core longitudinal section power core (1) with the axle center line of signal core (2) is trapezoidal.
2. The high frequency signal low attenuation 4-core insulated cable of claim 1, wherein: the power supply wire core (1) comprises an inner conductor (10) and an XLPE insulating layer (11), and insulating lubricating silicone grease is filled between the inner conductor (10) and the XLPE insulating layer (11).
3. The high frequency signal low attenuation 4-core insulated cable of claim 2, wherein: the inner conductor (10) is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.02mm to 0.08 mm.
4. The high frequency signal low attenuation 4-core insulated cable of claim 1, wherein: the insulated wire core (6) comprises a central conductor (12), a PFA inner insulating layer (13) and a PP outer insulating layer (14), and insulating lubricating silicone grease is filled between the central conductor (12) and the PFA inner insulating layer (13).
5. The high frequency signal low attenuation 4-core insulated cable of claim 4, wherein: the central conductor (12) is formed by twisting a plurality of tinned copper wires with the wire diameters of 0.05mm to 0.1mm, and the twisting distance of the tinned copper wires is 20 to 50 times of the wire diameters.
6. The high frequency signal low attenuation 4-core insulated cable of claim 4, wherein: the thickness of the PFA inner insulating layer (13) is 1.5 times to 2 times that of the PP outer insulating layer (14).
7. The high frequency signal low attenuation 4-core insulated cable of claim 1, wherein: the PET resin tape wrapping layer (8) is of a PET resin tape unidirectional spiral lapping and wrapping structure, and the wrapping direction of the PET resin tape wrapping layer (8) is the same as the twisting direction of the cable core.
8. The high frequency signal low attenuation 4-core insulated cable of claim 7, wherein: and a thermoplastic polyurethane adhesive layer is arranged on the outer surface of the PET resin band.
9. The high frequency signal low attenuation 4-core insulated cable of claim 1, wherein: the total shielding reticular conductor layer (4) and the sub-shielding reticular conductor layer (9) are formed by mutually spirally winding and braiding polyester fiber copper foil wires and tinned copper wires in a reverse direction, and the wire diameters of the polyester fiber copper foil wires and the tinned copper wires are different and the wire diameter ratio is between 0.9 and 1.
10. The high frequency signal low attenuation 4-core insulated cable of claim 1, wherein: the outer diameter of the power wire core (1) is 1mm to 1.5mm, and the outer diameter of the insulating wire core (6) is not smaller than 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321587632.3U CN220324182U (en) | 2023-06-21 | 2023-06-21 | High-frequency signal low-attenuation 4-core insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321587632.3U CN220324182U (en) | 2023-06-21 | 2023-06-21 | High-frequency signal low-attenuation 4-core insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220324182U true CN220324182U (en) | 2024-01-09 |
Family
ID=89419457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321587632.3U Active CN220324182U (en) | 2023-06-21 | 2023-06-21 | High-frequency signal low-attenuation 4-core insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220324182U (en) |
-
2023
- 2023-06-21 CN CN202321587632.3U patent/CN220324182U/en active Active
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