CN213424619U - Multi-core low-noise composite cable - Google Patents
Multi-core low-noise composite cable Download PDFInfo
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- CN213424619U CN213424619U CN202022645849.8U CN202022645849U CN213424619U CN 213424619 U CN213424619 U CN 213424619U CN 202022645849 U CN202022645849 U CN 202022645849U CN 213424619 U CN213424619 U CN 213424619U
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Abstract
The utility model relates to a multi-core low-noise composite cable, which consists of a low-noise radio frequency cable, an aramid fiber reinforced rope, a shielding twisted-pair signal line group, a 1.0mm2 insulated single line, a polytetrafluoroethylene wrapping tape protective layer, a graphite wrapping tape noise reduction layer, a silver-plated copper strip inner shielding layer, a silver-plated copper wire braided outer shielding layer and a meltable polytetrafluoroethylene protective layer; four groups of shielding twisted-pair signal wire groups, two 1.0mm2 insulated single wires and two aramid fiber reinforcing ropes are arranged outside the low-noise radio-frequency cable to form a cable core, and a polytetrafluoroethylene wrapping tape protective layer, a graphite wrapping tape noise reduction layer, a silver-plated copper strip inner shielding layer, a silver-plated copper wire woven outer shielding layer and a meltable polytetrafluoroethylene protective layer are sequentially arranged outside the cable core. The utility model has the advantages that: the multi-core low-noise composite cable is more stable and round in overall structure, tensile and anti-interference.
Description
Technical Field
The utility model relates to a multicore low noise composite cable, electric control system in the wide application aerospace equipment field.
Background
Traditional low noise composite cable kind is comparatively single, and the processing degree of difficulty is big in process of production, poor stability, decay are big, the pull resistance is poor, and the kind of cable core is less in composite cable, and the cable core is comparatively single, and the structure of low noise radio frequency cable and other cable core combinations is unstable, and the decay is big, and poor stability can weaken the signal transmission performance of low noise cable during the use, reduces the availability factor of low noise cable.
The traditional low-noise integrated cable shielding layer adopts a silver-plated copper wire braided structure, so that a shielding gap is large, and signal transmission leakage is more. When the signal is output at a high frequency, the attenuation becomes small. The shielding attenuation is 100db at 30MHZ, the shielding attenuation is small, the temperature-resistant grade of the coating is low, and the conductor heats up when being used for a long time, so that the conductor is oxidized or the coating falls off, the reliability is reduced, and the transmission performance is influenced.
The traditional low-noise composite cable generally has no tensile property, and the cable is possibly broken due to large external pressure in the using process, so that the transmission performance of the cable is reduced.
The sheath material of the traditional low-noise integrated cable adopts fluorinated ethylene propylene, the service temperature of the sheath is-70 ℃ to +200 ℃, the sheath does not have good hard force cracking resistance at high temperature and low temperature, and the transmission performance of the cable is reduced under the conditions of cracking and the like of the cable at high temperature or low temperature.
Disclosure of Invention
In view of the deficiencies in the prior art, the utility model provides a multicore low noise composite cable is one kind and is suitable for light current power and signal transmission and has low noise, anti-interference, tensile aviation cable.
The utility model discloses a realize above-mentioned purpose, the technical scheme who adopts is:
a multi-core low-noise composite cable is characterized in that: comprises a low-noise radio frequency cable, an aramid fiber reinforced rope, a shielding twisted-pair signal line group and a 1.0mm2The device comprises an insulating single wire, a polytetrafluoroethylene tape protective layer, a graphite tape noise reduction layer, a silver-plated copper strip inner shielding layer, a silver-plated copper wire braided outer shielding layer and a meltable polytetrafluoroethylene protective layer I;
four groups of shielding twisted-pair signal line groups and two 1.0 mm-diameter signal line groups are arranged outside the low-noise radio frequency cable2The insulating single wire and the two aramid fiber reinforcing ropes form a cable core, and a polytetrafluoroethylene tape protective layer, a graphite tape noise reduction layer, a silver-plated copper strip inner shielding layer, a silver-plated copper wire woven outer shielding layer and a meltable polytetrafluoroethylene protective layer I are sequentially arranged outside the cable core.
The utility model has the advantages that: the utility model discloses what the conductor adopted is silver-plated copper single line transposition form, makes multicore low noise composite cable softer, and silvering material has better transmission performance, can normally work under 250 ℃ of temperature, the oxytolerant reliability of greatly increased conductor.
The utility model discloses insulating single line insulating layer adopts fusibility polytetrafluoroethylene material, and its temperature resistant grade is 250 ℃, and this material has resistant oily, resistant various solvent, resistant smog, resistant chemical product corruption, the good characteristics of resistant high microthermal, in high frequency transmission, has also kept stronger environmental suitability.
The utility model discloses aramid fiber reinforcing cord that the cable core used, the effectual tensile strength who improves the cable has compromise compliance and the characteristics that weight is little simultaneously. The cable core adopts a 1+8 structure, and the pitch-diameter ratio adopts a 15-16 times of twisting form. The middle part is a low-noise radio frequency cable, and the twisted-pair shielding signal line group, the insulating single line and the aramid fiber reinforcing rope are symmetrically arranged, so that the cable core is stable and round in structure, and the cable is more compact.
The utility model discloses use polytetrafluoroethylene band sheath, make multicore low noise composite cable rounder more, weight is lighter, can reduce the weight of multicore low noise composite cable. The graphite wrapping tape noise reduction layer effectively isolates the propagation of noise, so that the noise value is increased, and the transmission of signals can be increased.
The utility model discloses the shielding layer adopts the form of double-shield layer, weaves the outer shielding layer for silver-plated copper strips inner shield layer and silver-plated copper wire in proper order, when there is external signal interference, this shielding layer can reduce the influence of shielding space to multicore low noise composite cable signal, can effectually weaken interference signal, make the shielding decay increase; when the shielding attenuation is changed to 120db at 30MHz, the attenuation is effectively increased, and the transmission performance can be increased.
The utility model discloses the fusibility polytetrafluoroethylene material that the sheath chooseed for use, it has higher temperature resistant grade, can normally work and fine-80 ℃ of the earth ultra-low temperature under the environment of 250 ℃ have resistant fracture performance under the circumstances, and it is comparatively convenient to process, and under the same withstand voltage grade, still can process thinner sheath, and multicore low noise composite cable external diameter is littleer.
In a word, the whole structure of the multi-core low-noise integrated cable is more stable, round, tensile and anti-interference.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the low-noise rf cable of the present invention.
Fig. 3 is a schematic diagram of the shielding twisted-pair signal line set of the present invention.
Figure 4 the utility model discloses 0.3mm2And the structure of the insulated single wire is shown schematically.
Figure 5 the utility model discloses 1.0mm2And the structure of the insulated single wire is shown schematically.
Detailed Description
As shown in figures 1 to 5, the multi-core low-noise composite cable comprises a low-noise radio frequency cable 1, an aramid fiber reinforcing rope 2, a shielding twisted-pair signal line group 3 and a 1.0mm thick signal line group2The device comprises an insulating single wire 4, a polytetrafluoroethylene tape protective layer 5, a graphite tape noise reduction layer 6, a silver-plated copper strip inner shielding layer 7, a silver-plated copper wire braided outer shielding layer 8 and a meltable polytetrafluoroethylene protective layer I9;
four groups of shielding twisted-pair signal wire groups 3 and two 1.0mm signal wire groups are arranged outside the low-noise radio frequency cable 12Insulating single line 4 and two aramid fiber reinforced ropes 2 constitute the cable core, are equipped with polytetrafluoroethylene band protective layer 5, graphite band noise reduction layer 6, silver-plated copper strips internal shield layer 7, silver-plated copper wire woven external shield layer 8 and fusibility polytetrafluoroethylene protective layer I9 outside the cable core in proper order.
The arrangement structure of the cable core is that a group of shielding twisted-pair signal line groups 3, an aramid fiber reinforcing rope 2, a group of shielding twisted-pair signal line groups 3 and a 1.0mm cable core are sequentially arranged along the periphery of the low-noise radio frequency cable 1 in a clockwise mode2An insulating single wire 4, a group of shielding twisted-pair signal line groups 3, an aramid fiber reinforcing rope 2, a group of shielding twisted-pair signal line groups 3 and a 1.0mm2The insulated single wire 4.
The low-noise radio frequency cable 1 is formed by sequentially arranging a superconducting graphite suspension noise reduction layer I1-2, a meltable polytetrafluoroethylene insulation layer 1-3, a superconducting graphite suspension noise reduction layer II 1-4, a braided shielding layer I1-5 and a meltable polytetrafluoroethylene protective layer II 1-6 outside a silver-plated copper single-wire stranded conductor 1-1.
The shielding twisted-pair signal wire group 3 is formed by sequentially arranging a silver-plated copper strip shielding layer 3-2 and a silver-plated copper wire braided shielding layer II 3-3 outside two 0.30mm insulated single wires 3-1;
the 0.30mm insulated single wire is formed by arranging a meltable polytetrafluoroethylene insulating layer I3-1-2 outside a silver-plated copper single wire stranded conductor I3-1-1.
1.0mm2The insulated single wire 4 is formed by arranging a meltable polytetrafluoroethylene insulating layer II 4-2 outside a silver-plated copper single wire stranded conductor II 4-1.
Claims (5)
1. A multi-core low-noise composite cable is characterized in that: comprises a low-noise radio frequency cable (1), an aramid fiber reinforced rope (2), a shielding twisted-pair signal line group (3) and a 1.0mm2The anti-noise electric cable comprises an insulating single wire (4), a polytetrafluoroethylene tape protective layer (5), a graphite tape noise reduction layer (6), a silver-plated copper strip inner shielding layer (7), a silver-plated copper wire braided outer shielding layer (8) and a meltable polytetrafluoroethylene protective layer I (9);
four groups of shielding twisted-pair signal line groups (3) and two 1.0 mm-diameter signal line groups are arranged outside the low-noise radio frequency cable (1)2The insulating single wire (4) and the two aramid fiber reinforcing ropes (2) form a cable core, and a polytetrafluoroethylene tape protective layer (5), a graphite tape noise reduction layer (6), a silver-plated copper strip inner shielding layer (7), a silver-plated copper wire woven outer shielding layer (8) and a fusible polytetrafluoroethylene protective layer I (9) are sequentially arranged outside the cable core.
2. The multiple core low noise composite cable of claim 1, wherein: the arrangement structure of the cable core is that a group of shielding twisted-pair signal line groups (3), an aramid fiber reinforcing rope (2), a group of shielding twisted-pair signal line groups (3) and a 1.0mm shielding twisted-pair signal line group are sequentially arranged along the periphery of the low-noise radio frequency cable (1) clockwise2The cable comprises an insulating single wire (4), a group of shielding twisted-pair signal wire groups (3), an aramid fiber reinforcing rope (2), a group of shielding twisted-pair signal wire groups (3) and a 1.0mm single wire2An insulated single wire (4).
3. The multiple core low noise composite cable of claim 1, wherein: the low-noise radio frequency cable (1) is formed by sequentially arranging a superconducting graphite suspension noise reduction layer I (1-2), a fusible polytetrafluoroethylene insulation layer (1-3), a superconducting graphite suspension noise reduction layer II (1-4), a silver-plated copper wire braided shielding layer I (1-5) and a fusible polytetrafluoroethylene protective layer II (1-6) outside a silver-plated copper single-wire stranded conductor (1-1).
4. The multiple core low noise composite cable of claim 1, wherein: the shielding twisted-pair signal line group (3) is composed of two 0.30mm insulated single lines (3-1) which are sequentially provided with a silver-plated copper strip shielding layer (3-2) and a silver-plated copper wire braided shielding layer II (3-3);
the 0.30mm insulated single wire is formed by arranging a meltable polytetrafluoroethylene insulating layer I (3-1-2) outside a silver-plated copper single wire stranded conductor I (3-1-1).
5. The multiple core low noise composite cable of claim 1, wherein: the 1.0mm2The insulated single wire (4) is formed by arranging a meltable polytetrafluoroethylene insulating layer II (4-2) outside a silver-plated copper single wire stranded conductor II (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022645849.8U CN213424619U (en) | 2020-11-16 | 2020-11-16 | Multi-core low-noise composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022645849.8U CN213424619U (en) | 2020-11-16 | 2020-11-16 | Multi-core low-noise composite cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213424619U true CN213424619U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022645849.8U Active CN213424619U (en) | 2020-11-16 | 2020-11-16 | Multi-core low-noise composite cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213424619U (en) |
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- 2020-11-16 CN CN202022645849.8U patent/CN213424619U/en active Active
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