CN108648874A - A kind of double layer screen anti-jamming signal twin-core or quad cable - Google Patents
A kind of double layer screen anti-jamming signal twin-core or quad cable Download PDFInfo
- Publication number
- CN108648874A CN108648874A CN201810414528.1A CN201810414528A CN108648874A CN 108648874 A CN108648874 A CN 108648874A CN 201810414528 A CN201810414528 A CN 201810414528A CN 108648874 A CN108648874 A CN 108648874A
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- Prior art keywords
- aluminium
- cable
- jamming signal
- double layer
- screen anti
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/002—Pair constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/005—Quad constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1008—Features relating to screening tape per se
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1016—Screens specially adapted for reducing interference from external sources composed of a longitudinal lapped tape-conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1025—Screens specially adapted for reducing interference from external sources composed of a helicoidally wound tape-conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1091—Screens specially adapted for reducing interference from external sources with screen grounding means, e.g. drain wires
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of double layer screen anti-jamming signal twin-core or quad cable, the cable includes：Two signal conductors and drainage thread using twist knit by the way of be wound and to form strand and knit line, strand knits and is arranged with one layer of aluminium-plastic tape outside line, the aluminium face of aluminium-plastic tape is located on the inside of aluminium-plastic tape and is contacted with drainage thread, it is arranged with one layer of insulating sheath outside aluminium-plastic tape, galvanized steel wire netting is wrapped up in one layer of tin-coated copper strip of insulating sheath outer wrapping, copper strips outside；It realizes after cable uploads defeated signal by low frequency and high frequency hybrid electromagnetic field by smaller interference.
Description
Technical field
The present invention relates to thermal measurement instrument fields, and in particular, to a kind of double layer screen anti-jamming signal twin-core or four
Core cable.
Background technology
With the high speed development of information age, various high-power frequency conversion equipment that experimental provision and industry spot use, silicon
The communication equipment of commutation supply voltage equipment and high frequency continuously emerges, and mutual electromagnetic radiation and electromagnetic interference are also on the rise,
It is inevitably present such or such interference source in the comprehensive wiring system ambient enviroment at scene so that transmit signal
Cable by electromagnetic field severe jamming.Electromagnetic field is superimposed upon by radiating the parasitic electric energy generated on the signal of neighbouring cable,
Data distortion or control signal malfunction are caused, brings and seriously affects to experimental provision or industry park plan.
In common anti-interference cable, twin-core anti-interference cable is shielded using single layer copper mesh, and inner lead multiple twin is more
Every group of package aluminum plastic belt is shielded inside core anti-interference cable, and one layer of copper mesh is wrapped up outside all groups and carries out bulk shielding.
One layer of insulating sheath is all wrapped up outside the shielded layer of both cables, after field wiring, copper mesh cabinet end single-end earthed.This
Kind of anti-interference cable can only shield low frequency (<1MHz) the interference of electromagnetic field, for high frequency (>1MHz) interference of electromagnetic field shield effectiveness is very
Difference.
Invention content
The present invention provides a kind of double layer screen anti-jamming signal twin-core or quad cables, solve existing anti-interference line
The deficiency of cable realizes after cable uploads defeated signal by low frequency and high frequency hybrid electromagnetic field by smaller interference.
Since there is complicated electromagnetic fields in industry or experimental field, in order to allow signal to be subject in transmission process
Smaller is interfered, the interference for shielding low frequency magnetic field is not only needed, but also needs to shield the interference of high frequency magnetic field.The present invention provides a kind of double
Layer shielding anti-interference cable can solve the problems, such as this.
For achieving the above object, on the one hand the application provides a kind of double layer screen anti-jamming signal twin-core cable,
The cable includes：
Two signal conductors and drainage thread using twist knit by the way of be wound and to form strand and knit line, strand knits and is arranged with one outside line
The aluminium face of layer aluminium-plastic tape, aluminium-plastic tape is located on the inside of aluminium-plastic tape and is contacted with drainage thread, aluminium-plastic tape housing
Equipped with one layer of insulating sheath, one layer of tin-coated copper strip of insulating sheath outer wrapping, galvanized steel wire netting is wrapped up in copper strips outside.
On the other hand the application provides a kind of double layer screen anti-jamming signal quad cable, the cable includes：
Two groups of strands knit line, and every group of strand knits line and be wound shape in such a way that strand is knitted by two signal conductors and drainage thread
At strand knits and is arranged with one layer of aluminium-plastic tape outside line, and the aluminium face of aluminium-plastic tape is located on the inside of aluminium-plastic tape and and drainage thread
Contact, two groups of strands knit line and packing material is wrapped up by insulating sheath, one layer of tin-coated copper strip of winding outside insulating sheath, outside tin-coated copper strip
Wrap up one layer of galvanized steel wire netting.
Further, for 4~20mA of transmission or 1~5V signals, conductor uses tinned copper wire, nominal area of section to use
0.5~1.0mm2；1V following signals is transmitted, conductor uses silver-gilt copper wire, nominal area of section to use 1.0~1.5mm2；For thermoelectricity
Even compensating wire, conductor use 0.5~1.0mm using material as defined in national standard GB/T 4990, nominal area of section2。
Further, insulating sheath uses polytetrafluoroethylene (PTFE).This material can allow insulating layer thinner, the energy when cable strand is knitted
Accomplish smaller stranding distance.
Further, drainage thread uses multiply tinned copper wire.
Further, aluminium-plastic tape lap-joint should be separated by 90 °.Avoid occurring reduction shielding properties in crack when bending.
Further, aluminium-plastic tape is in winding, seam crossing conductive binder or mixed metal particle it is viscous
Mixture bonds.Ensure the integrality of shielding.
Further, the thickness of aluminium-plastic tape uses 0.07~0.1mm, elongation to be more than 20%.
Further, two groups of strands knit the stranding distance difference of line.It can reduce in this way caused by the signal transmitted on two groups of lines mutually
Interference.
Further, packing material is non-hygroscopic filler, can ensure that two groups of lead locations are stablized, outside quad cable
Layer is wrapped up using non-hygroscopic film band；Insulating sheath is polyvinyl chloride.
One or more technical solution provided by the present application, has at least the following technical effects or advantages：
By smaller interference after cable uploads defeated signal by low frequency and high frequency hybrid electromagnetic field.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 (a) is twin-core anti-jamming signal cable sectional view；
Fig. 1 (b) is twin-core anti-jamming signal cable side view；
Fig. 2 (a) is four core anti-jamming signal cable sectional views；
Fig. 2 (b) is four core anti-jamming signal cable side views；
Fig. 3 is anti-jamming signal cable ground connection schematic diagram.
Specific implementation mode
The present invention provides a kind of double layer screen anti-jamming signal twin-core or quad cables, solve existing anti-interference line
The deficiency of cable realizes after cable uploads defeated signal by low frequency and high frequency hybrid electromagnetic field by smaller interference.
To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
- Fig. 3 is please referred to Fig.1, the present invention proposes the design structure of two kinds of cables, and one kind is twin-core anti-interference cable, separately
One kind is four core anti-interference cables.
For twin-core anti-interference cable, two signal conductors and drainage thread are wound in such a way that strand is knitted, and are knitted in strand
One layer of aluminium-plastic tape of line housing, aluminium face are on the inside of composite band and are well contacted with drainage thread, in the one layer of insulation of aluminum plastic belt housing
Galvanized steel wire netting is wrapped up in sheath, one layer of tin-coated copper strip of insulating sheath outer wrapping, copper strips outside.
For four core anti-interference cables, inside has two groups of lines, every group of two signal conductors and drainage thread that strand is used to knit
Mode is wound, and one layer of aluminium-plastic tape of line housing is knitted in strand, and aluminium face is on the inside of composite band and is well contacted with drainage thread, and two
Group line and packing material are wrapped up by insulating sheath together, and one layer of tin-coated copper strip is wound outside sheath, wrapped up again outside copper strips one layer it is zinc-plated
Steel wire.
Both double shielded cables, outer layer all uses the copper strips of high conductivity well to shield electric field, while outer layer
Multipoint earthing inhibits electromagnetic field of high frequency interference.Internal layer well shields magnetic field using the aluminium-plastic tape of high magnetic permeability, together
When the inhibition interfered low frequency magnetic field realized by the drainage thread under aluminium-plastic tape single-end earthed.
In an Experiment of Thermophysics device in laboratory, which has used a big power supply pair of 10MW direct current silicon rectifiers to set
Standby to be heated, the thermocouple on device is more than 4MW originally using single-layer shield compensating wire in big output power of power supply
When, part thermocouple signal will appear signal saltus step, and as the thermocouple of power rise saltus step can be more and more, amplitude also can
It is increasing.It is big in big output power of power supply using the anti-interference cable and wiring method of the present invention by replacing compensating wire
Thermocouple signal hopping phenomenon can just be gone out after 6MW.Therefore, cable of the invention can allow signal of the transmission on cable to pass through
The interference smaller being subject to after strong-electromagnetic field.
Fig. 1 (a) is twin-core anti-jamming signal cable sectional view, and Fig. 1 (b) is twin-core anti-jamming signal cable side view.Fig. 1
(a) it is twin-core anti-jamming signal cable sectional view, Fig. 1 (b) is twin-core anti-jamming signal cable side view.Pass through the section of cable
Figure can be seen that the difference position of conducting wire, drainage thread, aluminium-plastic tape, copper strips and steel wire etc., and outlet can be seen by side view
Cable strand knits form.Fig. 3 is anti-jamming signal cable ground connection schematic diagram.
The selection of conductor, for 4~20mA of transmission or 1~5V signals, conductor uses tinned copper wire, nominal area of section to use
0.5~1.0mm2；1V following signals, especially mv grades of small signals are transmitted, conductor uses silver-gilt copper wire, nominal area of section to use
1.0~1.5mm2；For compensation lead of thermocouple, conductor is used using material as defined in national standard GB/T 4990, nominal area of section
0.5~1.0mm2.The insulating layer for wrapping up conductor uses polytetrafluoroethylene (PTFE), this material that insulating layer can be allowed thinner, is knitted in cable strand
When can accomplish smaller stranding distance.Whether two cores or quad cable, every group is all two conducting wires and a drainage thread, drainage thread
Using multiply tinned copper wire, nominal area of section is identical as conductor cross sectional area.Two conducting wires are mutually paired, and 20~30mm of stranding distance (is led
The smaller stranding distance of cross-sectional area can be smaller), drainage thread and aluminum plastic belt are overlapped wrapped together, and aluminum plastic belt lap-joint should be separated by 90 °, keep away
Exempt from occur reduction shielding properties in crack when bending, for aluminum plastic belt in winding, seam crossing must use electroconductive binder or mixed metal
The adhesive of particle just can guarantee that the integrality of shielding, the thickness of aluminum plastic belt use 0.07~0.1mm, elongation to be more than 20%.
For quad cable, the stranding distance of two groups of conducting wires cannot be the same, can reduce so mutually dry caused by the signal transmitted on two groups of lines
It disturbs.Quad cable needs to increase non-hygroscopic filler in both sides gap to ensure that two groups of lead locations are stablized, can be with
It is wrapped up using non-hygroscopic film band in outer layer.Cable jacket material suggestion uses polyvinyl chloride, this material more soft
It is soft to be easy wire stripping in wiring.Wrapped using the overlapping of the tin plating soft copper band of 0.05~0.1mm outside sheath, seam crossing will also make
With electroconductive binder or the adhesive of mixed metal particle.Cable outermost layer uses zinc-coated wire, count to be not less than 80%,
It is that copper strips can be protected to damage but also improve cable tensile strength using zinc-coated wire, moreover it is possible to improve the shielding effect of external shielding layer
Fruit.
The cable of the wiring of cable and grounding requirement, industry or experimental field is all placed in bus bar installation casing, bus bar installation casing
It is required that being connected to the ground every 20 meters, since the external shielding layer meeting multiple spot of the effect cable of gravity is contacted with crane span structure, external screen is realized
With covering Mulit-point Connection.Internal shield by drainage thread cabinet end single-end earthed, realize internal shield single-point grounding function.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of double layer screen anti-jamming signal twin-core cable, which is characterized in that the cable includes：
Two signal conductors and drainage thread using twist knit by the way of be wound and to form strand and knit line, drainage thread single-end earthed, knit by strand
One layer of aluminium-plastic tape is arranged with outside line, the aluminium face of aluminium-plastic tape is located on the inside of aluminium-plastic tape and is contacted with drainage thread, aluminium
It is arranged with one layer of insulating sheath outside plastic composite strip, one layer of tin-coated copper strip of insulating sheath outer wrapping, tin-coated copper strip multipoint earthing is tin plating
Galvanized steel wire netting is wrapped up outside copper strips.
2. a kind of double layer screen anti-jamming signal quad cable, which is characterized in that the cable includes：
Two groups of strands knit line, and every group of strand knits line and be wound to be formed in such a way that strand is knitted by two signal conductors and drainage thread,
Drainage thread single-end earthed, knit and be arranged with one layer of aluminium-plastic tape outside line, and the aluminium face of aluminium-plastic tape is located in aluminium-plastic tape by strand
It side and is contacted with drainage thread, two groups of strands knit line and packing material is wrapped up by insulating sheath, and one layer of tin-coated copper is wound outside insulating sheath
Band, tin-coated copper strip multipoint earthing, one layer of galvanized steel wire netting of tin-coated copper strip outer wrapping.
3. double layer screen anti-jamming signal twin-core according to claim 1 or 2 or quad cable, which is characterized in that for
4~20mA or 1~5V signals are transmitted, conductor uses tinned copper wire, nominal area of section to use 0.5~1.0mm2；Transmit 1V or less
Signal, conductor use silver-gilt copper wire, nominal area of section to use 1.0~1.5mm2；For compensation lead of thermocouple, conductor uses state
Material as defined in GB/T 4990 is marked, nominal area of section uses 0.5~1.0mm2。
4. double layer screen anti-jamming signal twin-core cable according to claim 1, which is characterized in that insulating sheath is using poly-
Tetrafluoroethene.
5. double layer screen anti-jamming signal twin-core according to claim 1 or 2 or quad cable, which is characterized in that drainage
Line uses multiply tinned copper wire.
6. double layer screen anti-jamming signal twin-core according to claim 1 or 2 or quad cable, which is characterized in that plastic-aluminum
Composite band lap-joint should be separated by 90 °.
7. double layer screen anti-jamming signal twin-core according to claim 1 or 2 or quad cable, which is characterized in that plastic-aluminum
Composite band is in winding, the adhesive bonding of seam crossing conductive binder or mixed metal particle.
8. double layer screen anti-jamming signal twin-core according to claim 1 or 2 or quad cable, which is characterized in that plastic-aluminum
The thickness of composite band uses 0.07~0.1mm, elongation to be more than 20%.
9. double layer screen anti-jamming signal quad cable according to claim 2, which is characterized in that two groups of strands knit the strand of line
Away from difference.
10. double layer screen anti-jamming signal quad cable according to claim 2, which is characterized in that packing material is non-
Hygroscopicity filler, quad cable outer layer are wrapped up using non-hygroscopic film band；Insulating sheath is polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810414528.1A CN108648874A (en) | 2018-05-03 | 2018-05-03 | A kind of double layer screen anti-jamming signal twin-core or quad cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810414528.1A CN108648874A (en) | 2018-05-03 | 2018-05-03 | A kind of double layer screen anti-jamming signal twin-core or quad cable |
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| Publication Number | Publication Date |
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| CN108648874A true CN108648874A (en) | 2018-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810414528.1A Pending CN108648874A (en) | 2018-05-03 | 2018-05-03 | A kind of double layer screen anti-jamming signal twin-core or quad cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332336A (en) * | 2020-03-11 | 2020-06-26 | 郑州铁路职业技术学院 | Device and method for monitoring and early warning train speed of test line |
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| CN101901643A (en) * | 2010-08-04 | 2010-12-01 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN103220899A (en) * | 2013-04-01 | 2013-07-24 | 中联重科股份有限公司 | Variable grounding control device, system and method for shielding layer, and engineering machine |
| CN203444804U (en) * | 2013-08-22 | 2014-02-19 | 安徽金阳电器科技发展有限责任公司 | Clamping type composite shield three-core flat cable with sheath |
| CN103915214A (en) * | 2014-03-27 | 2014-07-09 | 江苏荣宜电缆有限公司 | Double-layer shielding optical fiber composite computer cable |
| CN203931642U (en) * | 2014-03-27 | 2014-11-05 | 江苏荣宜电缆有限公司 | A kind of double layer screen optical fiber composite computing electric cable |
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2018
- 2018-05-03 CN CN201810414528.1A patent/CN108648874A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298399Y (en) * | 2008-11-13 | 2009-08-26 | 天津亿鑫通科技股份有限公司 | Double shielding coaxial cable |
| CN101901643A (en) * | 2010-08-04 | 2010-12-01 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN103220899A (en) * | 2013-04-01 | 2013-07-24 | 中联重科股份有限公司 | Variable grounding control device, system and method for shielding layer, and engineering machine |
| CN203444804U (en) * | 2013-08-22 | 2014-02-19 | 安徽金阳电器科技发展有限责任公司 | Clamping type composite shield three-core flat cable with sheath |
| CN103915214A (en) * | 2014-03-27 | 2014-07-09 | 江苏荣宜电缆有限公司 | Double-layer shielding optical fiber composite computer cable |
| CN203931642U (en) * | 2014-03-27 | 2014-11-05 | 江苏荣宜电缆有限公司 | A kind of double layer screen optical fiber composite computing electric cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111332336A (en) * | 2020-03-11 | 2020-06-26 | 郑州铁路职业技术学院 | Device and method for monitoring and early warning train speed of test line |
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Application publication date: 20181012 |
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