CN220895244U - Multi-core insulated cable capable of inhibiting high-frequency signal attenuation - Google Patents
Multi-core insulated cable capable of inhibiting high-frequency signal attenuation Download PDFInfo
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- CN220895244U CN220895244U CN202321849177.XU CN202321849177U CN220895244U CN 220895244 U CN220895244 U CN 220895244U CN 202321849177 U CN202321849177 U CN 202321849177U CN 220895244 U CN220895244 U CN 220895244U
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- frequency signal
- insulated cable
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- 230000002401 inhibitory effect Effects 0.000 title abstract description 7
- 239000010410 layer Substances 0.000 claims abstract description 66
- 238000004804 winding Methods 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims abstract description 11
- 229920001778 nylon Polymers 0.000 claims abstract description 11
- 239000011527 polyurethane coating Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- QHSJIZLJUFMIFP-UHFFFAOYSA-N ethene;1,1,2,2-tetrafluoroethene Chemical compound C=C.FC(F)=C(F)F QHSJIZLJUFMIFP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims description 9
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- 239000004703 cross-linked polyethylene Substances 0.000 claims description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 7
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 7
- 238000005253 cladding Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000017105 transposition Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- Communication Cables (AREA)
Abstract
The utility model discloses a multi-core insulated cable for inhibiting high-frequency signal attenuation, which comprises two power supply wire cores and a signal wire core which are twisted together to form a cable core, wherein the outside of the cable core is sequentially coated with an ETFE resin wrapping layer, a total winding shielding layer, a nylon anti-corrosion layer and a PFA extrusion outer sheath layer, the signal wire core comprises two insulated wire cores which are arranged in parallel to form a wire core body, the outside of the wire core body is sequentially coated with a nylon semi-conductive resin wrapping layer and a sub-winding shielding layer, the total winding shielding layer and the sub-winding shielding layer are of a parallel spiral winding structure of a plurality of shielding wires, and the shielding wires are formed by silver-plated copper wire conductors and polyurethane coating layers. The insulated cable can eliminate contact current generated by the shielding layer, is beneficial to inhibiting long-distance transmission attenuation of high-frequency signals, and ensures stable electrical characteristics of the cable.
Description
Technical Field
The application relates to the technical field of cables, in particular to a multi-core insulated cable capable of inhibiting high-frequency signal attenuation.
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. The electromagnetic noise environment of an industrial application site is often quite complex, and electromagnetic noise radiation or conduction (EMI) 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. However, the shielding layer is usually a winding and braiding structure of copper wires, copper alloy wires, aluminum wires and aluminum alloy wires, and the metal wires forming the shielding layer are in friction contact with each other to generate contact current along with the bending and twisting process of the cable, so that the change of contact pressure influences the change of resistance value, the long-distance transmission attenuation of high-frequency signals is easily caused, and the electrical characteristics of the cable are influenced.
Disclosure of utility model
Aiming at the defects of the prior art, the application aims to provide the multi-core insulated cable for inhibiting the attenuation of the high-frequency signals, eliminates the contact current generated by the shielding layer, is beneficial to inhibiting the long-distance transmission attenuation of the high-frequency signals and ensures the stable electrical characteristics of the cable.
The application solves the technical problems through the following technical proposal.
The utility model provides a restrain high frequency signal attenuation formula multicore insulated cable, includes two power supply core and a signal core transposition jointly constitutes the cable core, the outside cladding of cable core has ETFE resin around covering, total winding shielding layer, nylon anticorrosive coating and PFA crowded package oversheath layer in proper order, the signal core includes two insulating core parallel arrangement constitution core bodies, the outside cladding of core body has nylon semiconductive resin around covering and branch winding shielding layer in proper order, total winding shielding layer with branch winding shielding layer is a plurality of shielded wires spiral winding structure side by side, the shielded wire comprises silver-plated copper wire conductor and polyurethane coating.
Preferably, the outer diameter of the power wire core is smaller than that of the insulating wire core.
Preferably, the power core comprises a power core conductor and an FEP insulation layer.
Preferably, the power wire core conductor is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.04mm to 0.16 mm.
Preferably, the insulated wire core comprises an inner conductor, an XLPE inner insulation layer and an ETFE outer insulation layer.
Preferably, the inner conductor is formed by twisting a plurality of tinned copper wires with the wire diameters of 0.02mm to 0.1 mm.
Preferably, the thickness ratio of the XLPE inner insulating layer to the ETFE outer insulating layer is 1.5:1 to 2.5:1.
Preferably, the silver-plated copper wire conductor has a diameter of 0.1mm to 0.3mm.
Preferably, the polyurethane coating layer has a thickness of 0.01mm to 0.05mm.
Preferably, the axis connecting line of the power wire core and the signal wire core on the longitudinal section of the cable core is isosceles trapezoid.
The application has the beneficial effects that:
1. The shielding wires are spirally wound side by adopting the total winding shielding layer and the sub-winding shielding layer, and are composed of the silver-plated copper wire conductors and the polyurethane coating layer, so that the silver-plated copper wires cannot be in direct contact, contact current generated by the shielding layers is eliminated, long-distance transmission attenuation of high-frequency signals is restrained, stability of shielding effect is guaranteed, and the silver-plated copper wires are higher in conductivity and better in electrical characteristics.
2. Optimize cable core structure, make the axle center line of power core and signal core be isosceles trapezoid, the structure is balanced, and the stress can more evenly distribute on signal core and power core, makes total shielding layer and cable core peripheral distance keep the homogeneity through ETFE resin around the covering, is favorable to reducing high frequency signal long distance transmission attenuation, guarantees noise shielding's stability, improves the electrical property of cable, and the durability is better.
3. The nylon semi-conductive resin wrapping layer is beneficial to reducing local stress concentration of the shielding layer, improving flexibility and ensuring stable high-frequency signal transmission characteristics.
Drawings
The following drawings are intended to facilitate the description of the preferred embodiments and are not intended to limit the scope of the application.
FIG. 1 is a schematic cross-sectional view of an embodiment of the present application.
In the figure: the cable comprises a 1-power wire core, a 2-signal wire core, a 3-ETFE resin wrapping layer, a 4-total winding shielding layer, a 5-nylon anti-corrosion layer, a 6-PFA extrusion outer sheath layer, a 7-insulation wire core, an 8-nylon semi-conductive resin wrapping layer, a 9-division winding shielding layer, a 10-power wire core conductor, an 11-FEP insulation layer, a 12-inner conductor, a 13-XLPE inner insulation layer and a 14-ETFE outer insulation layer.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
As shown in fig. 1, the multi-core insulated cable suppressing attenuation of high-frequency signals according to the embodiment of the application comprises two power wire cores 1 and one signal wire core 2 which are twisted together to form a cable core. In one embodiment, the power wire core 1 comprises a power wire core conductor 10 and an FEP insulating layer 11, and specifically, the power wire core conductor 10 is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.04mm to 0.16 mm. The signal wire core 2 comprises two insulating wire cores 7 which are arranged in parallel to form a wire core body, and nylon semi-conductive resin wrapping layers 8 and sub-winding shielding layers 9 are sequentially wrapped outside the wire core body. In one embodiment, the insulated wire core 7 includes an inner conductor 12, an XLPE inner insulation layer 13 and an ETFE outer insulation layer 14, and further, the thickness ratio of the XLPE inner insulation layer 13 to the ETFE outer insulation layer 14 is 1.5:1 to 2.5:1. Specifically, the inner conductor 12 is formed by twisting a plurality of tinned copper wires with the wire diameters of 0.02mm to 0.1mm. In this embodiment, the outer diameter of the power wire core 1 is smaller than the outer diameter of the insulating wire core 7, and further, on a longitudinal section of the cable core, an axis connecting line of the power wire core 1 and the signal wire core 2 is in an isosceles trapezoid shape.
The cable core is sequentially coated with an ETFE resin wrapping layer 3, a total winding shielding layer 4, a nylon anti-corrosion layer 5 and a PFA extrusion outer sheath layer 6. The total winding shielding layer 4 and the sub-winding shielding layer 9 are of a parallel spiral winding structure of a plurality of shielding wires, the shielding wires are composed of silver-plated copper wire conductors and polyurethane coating layers, further, the diameters of the silver-plated copper wire conductors are 0.1mm to 0.3mm, and the thicknesses of the polyurethane coating layers are 0.01mm to 0.05mm.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. The utility model provides a restrain high frequency signal attenuation formula multicore insulated cable which characterized by: including two power sinle silk (1) and a signal sinle silk (2) transposition jointly constitute the cable core, the outside cladding of cable core has ETFE resin around covering (3), total winding shielding layer (4), nylon anticorrosive coating (5) and PFA crowded package oversheath layer (6) in proper order, signal sinle silk (2) include two insulating sinle silk (7) and set up the constitution sinle silk body in parallel, the outside cladding of sinle silk body has nylon semi-conductive resin around covering (8) and divide winding shielding layer (9) in proper order, total winding shielding layer (4) with divide winding shielding layer (9) to be a plurality of shielding wires spiral winding structure side by side, shielding wire comprises silver-plated copper wire conductor and polyurethane coating.
2. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 1, characterized in that: the outer diameter of the power wire core (1) is smaller than that of the insulating wire core (7).
3. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 1, characterized in that: the power supply wire core (1) comprises a power supply wire core conductor (10) and an FEP insulating layer (11).
4. A multi-core insulated cable suppressing attenuation of high frequency signals as claimed in claim 3, wherein: the power wire core conductor (10) is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.04mm to 0.16 mm.
5. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 1, characterized in that: the insulated wire core (7) comprises an inner conductor (12), an XLPE inner insulating layer (13) and an ETFE outer insulating layer (14).
6. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 5, characterized in that: the inner conductor (12) is formed by twisting a plurality of tinned copper wires with the wire diameters of 0.02mm to 0.1 mm.
7. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 5, characterized in that: the thickness ratio of the XLPE inner insulating layer (13) to the ETFE outer insulating layer (14) is 1.5:1 to 2.5:1.
8. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 1, characterized in that: the diameter of the silver-plated copper wire conductor is 0.1mm to 0.3mm.
9. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 1, characterized in that: the thickness of the polyurethane coating layer is 0.01mm to 0.05mm.
10. The high-frequency signal attenuation-suppressing multi-core insulated cable according to claim 1, characterized in that: 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 in an isosceles trapezoid shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321849177.XU CN220895244U (en) | 2023-07-14 | 2023-07-14 | Multi-core insulated cable capable of inhibiting high-frequency signal attenuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321849177.XU CN220895244U (en) | 2023-07-14 | 2023-07-14 | Multi-core insulated cable capable of inhibiting high-frequency signal attenuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220895244U true CN220895244U (en) | 2024-05-03 |
Family
ID=90844182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321849177.XU Active CN220895244U (en) | 2023-07-14 | 2023-07-14 | Multi-core insulated cable capable of inhibiting high-frequency signal attenuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220895244U (en) |
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2023
- 2023-07-14 CN CN202321849177.XU patent/CN220895244U/en active Active
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