CN205582567U - High frequency digital communication cable - Google Patents
High frequency digital communication cable Download PDFInfo
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- CN205582567U CN205582567U CN201620146216.3U CN201620146216U CN205582567U CN 205582567 U CN205582567 U CN 205582567U CN 201620146216 U CN201620146216 U CN 201620146216U CN 205582567 U CN205582567 U CN 205582567U
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- cable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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Abstract
The utility model relates to the technical field of cables, in particular to high frequency digital communication cable, the utility model discloses a high frequency digital communication cable includes cable pair, water conservancy diversion line, first total shielding layer, the interior sheath of semiconduction and oversheath, the utility model discloses, the cable core includes inner conductor, endodermis, foaming layer and exodermis, adopts the three -layer to crowd the formula high -pressure physics altogether and fills nitrogen foaming structure, and high frequency transmission attenuation is little, divide shielding layer messenger's cable core and water conservancy diversion line mutual isolation, and make cable pair and water conservancy diversion line contact each other, reduce the signal line to within a definite time mutual interference, first total shielding layer makes the utility model discloses possesses good electromagnetic compatibility ability, the sheath is favorable to in the semiconduction the utility model discloses an effect of anti electrostatic interference, the oversheath makes the utility model discloses possess good physical strength and weather resistance, the utility model discloses it does not have flue gas toxicity and dropping production to have when electromagnetic compatibility and anti -static function and burning back flame do not have the phenomenon of spreading, burning.
Description
Technical field
This utility model relates to field of cable technology, particularly to a kind of high-frequency digital communications cable.
Background technology
Since 20th century the mid-80s, along with data communication and the high speed development of information technology, the fast development of network technology and improving constantly of computing power, people are more and more higher to the requirement of comprehensive wiring system performance, network transmission speed brings up to 10,000,000,000 from current gigabit at present, and network rate improves day by day, it is meant that the raising of operating frequency, operating frequency is the highest, the most easily produces electromagnetic radiation and electromagnetic coupled.
It addition, can constantly there be new electromagnetic interference source to produce in surrounding, the radiation of the highest generation of network operating frequencies is the most serious, and the equilibrium response of unshielded data cable is not enough to offset electromagnetic radiation and the electromagnetic interference in the external world of express network itself.It is internal (kelvin effect of metal screen layer) that shield technology then can effectively prevent outside electromagnetic interference from entering cable, stop cable internal signal to external radiation (reflection effect of metal screen layer) simultaneously, the six type shielding type data cable that surpass of 500MHz bandwidth have concentrated the balance of pair twist and the shielding principle of metal, it it is the perfect adaptation of balance and shielding principle, thus the electromagnetic compatibility having had and the security feature of electromagnetic leakage, when wiring system surrounding exists bigger electromagnetic interference, or user is the leakage preventing information in the transmission, to transmission when data message security classification is higher or user hands over high to EMC Requirements, preferably use shielded cabling systems, middle high bandwidth and high speed rate surpass in six class comprehensive wiring systems, shielding type cable is used by more user.
Traditional ultra-high-frequency data cable uses real core perfluoroethylene-propylene insulation and aluminium foil total shield technology structure, and when producing, transmission attenuation value and near-end cross value are affected the biggest by its line by equipment.
Additionally being on the increase along with high-rise intelligent building, require the most more to carry out Zhao's height with the feature of environmental protection to the anti-flammability for building interior data cable, the fire-protection rating that home communications cable is main at present have employed Unite States Standard CMP, CMR, CM, CMG, CMX, wherein CMP rank flame-retardant cable is acknowledged as the cable that fire protecting performance is best, the highest flame retardant effect can be reached in the case of not increasing any wiring conduit, CMP DBMS cable insulating and sheath material are perfluoroethylene-propylene, this material possesses the highest flame retardant efficiency, but it can discharge a certain amount of fluorine halogen gas when burning, this flue gas toxity can produce the strongest corrosivity to building, and have dropping to produce, secondary hazardness can be produced.
Summary of the invention
In order to overcome deficiency described above, the purpose of this utility model there is provided a kind of high-frequency digital communications cable that smokeless toxicity and dropping produce time flame is without spreading phenomenon, burning after having electromagnetic compatibility and antistatic property and burning.
The technical scheme in the invention for solving the technical problem is:
A kind of high-frequency digital communications cable, wherein, including cable pair, channelizing line, first total screen layer, semiconductive sheath and oversheath；Described first total screen layer is coated on the surface of described cable pair and channelizing line, and described semiconductive sheath is coated on the surface of described first total screen layer, and described oversheath is coated on the surface of described semiconductive sheath；Described cable pair includes two cable cores and the sub-shield of two cable cores of cladding, described cable core includes inner wire, endodermis, foaming layer and exodermis, described endodermis extrudes in the surface of described inner wire, described foaming layer extrudes in the surface of described endodermis, and described exodermis extrudes in the surface of described foaming layer.
As a kind of improvement of the present utility model, second total screen layer it is additionally provided with between described semiconductive sheath and described oversheath, described second total screen layer is coated on the surface of described semiconductive sheath, and described oversheath is coated on the surface of described second total screen layer.
As further improvement of the utility model, described inner wire is single copper free wire.
Further improving as of the present utility model, described endodermis uses polyolefine material to extrude in the surface of described inner wire.
Further improving as of the present utility model, described foaming layer uses polyolefine material to extrude in the surface of described endodermis through inflated with nitrogen physical blowing mode.
Further improving as of the present utility model, described exodermis uses polyolefine material to extrude in the surface of described foaming layer.
Further improve as of the present utility model, described sub-shield by
0.05mm
Two-sided conductive aluminum foil forms.
Further improving as of the present utility model, described channelizing line is formed by least one tin plated steel wire articulation.
Further improve as of the present utility model, described first total screen layer with tin-coated copper mesh grid form in
360
Degree is coated on the surface of described cable pair and channelizing line, and described semiconductive sheath uses semiconductive polyolefine material to be coated on the surface of described first total screen layer to extrude form, described second total screen layer with tin-coated copper mesh grid form in
360
Degree is coated on described semiconductive sheath.
Further improving as of the present utility model, the material of described oversheath is polyolefine material.
At this utility model, cable core includes inner wire, endodermis, foaming layer and exodermis, uses three-layer co-extruded formula high-pressure physics nitrogen charging foaming structure, and high-frequency transmission decay is little；Sub-shield makes cable core mutually isolated with channelizing line, and makes cable pair contact with each other with channelizing line, reduces and interferes phenomenon between holding wire pair；First total screen layer makes this utility model possess good Electro Magnetic Compatibility；Semiconductive sheath is conducive to antistatic interference effect of the present utility model；Oversheath makes this utility model possess good physical strength and weather resistance；This utility model there is electromagnetic compatibility and antistatic property and burning after flame without spreading phenomenon, burning time smokeless toxicity and dropping produce.
Accompanying drawing explanation
For ease of explanation, this utility model is described in detail by following preferred embodiment and accompanying drawing.
Figure
1
For structural representation of the present utility model；
Reference:
1-
Cable pair,
10-
Cable core,
11-
Inner wire,
12-
Endodermis,
13-
Foaming layer,
14-
Exodermis,
2-
Sub-shield,
3-
First total screen layer,
4-
Semiconductive sheath,
5-
Second total screen layer,
6-
Oversheath,
7-
Channelizing line.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Such as figure
1
Shown in, a kind of high-frequency digital communications cable of the present utility model, including cable pair
1
, channelizing line
7
, first total screen layer
3
, semiconductive sheath
4
And oversheath
6
。
First total screen layer
3
It is coated on cable pair
1
And channelizing line
7
Surface, semiconductive sheath
4
It is coated on first total screen layer
3
Surface, oversheath
6
It is coated on semiconductive sheath
4
Surface.
Cable pair
1
Including two cable cores
10
And two cable cores of cladding
10
Sub-shield
2
, cable core
10
Including inner wire
11
, endodermis
12
, foaming layer
13
And exodermis
14
, endodermis
12
Extrude in inner wire
11
Surface, foaming layer
13
Extrude in endodermis
12
Surface, exodermis
14
Extrude in foaming layer
13
Surface.
At this utility model, cable core
10
Including inner wire
11
, endodermis
12
, foaming layer
13
And exodermis
14
, using three-layer co-extruded formula high-pressure physics nitrogen charging foaming structure, high-frequency transmission decay is little；Sub-shield
2
Make cable core
10
With channelizing line
7
Mutually isolated, and make cable pair
1
With channelizing line
7
Contact with each other, reduce and interfere phenomenon between holding wire pair；First total screen layer
3
This utility model is made to possess good Electro Magnetic Compatibility；Semiconductive sheath
4
Be conducive to antistatic interference effect of the present utility model；Oversheath
6
This utility model is made to possess good physical strength and weather resistance.
Further, semiconductive sheath
4
With oversheath
6
Between be additionally provided with second total screen layer
5
, second total screen layer
5
It is coated on semiconductive sheath
4
Surface, oversheath
6
It is coated on second total screen layer
5
Surface, second total screen layer
5
Make reinforcement Electro Magnetic Compatibility of the present utility model further.
This utility model provides inner wire
11
A kind of embodiment, inner wire
11
For single copper free wire, the decay of its high-frequency transmission is little, low cost.
This utility model provides endodermis
12
A kind of embodiment, endodermis
12
Use
0.05mm
Polyolefine material extrude in inner wire
11
Surface, increase entitled conductor
11
Adhesive force, increases core structure return loss value
.
This utility model provides foaming layer
13
A kind of embodiment, foaming layer
13
Polyolefine material is used to extrude in endodermis through inflated with nitrogen physical blowing mode
12
Surface, its foam degrees reaches
50%
, foam structure is uniform, and high frequency signal transmission is low to decline little, reduces material cost
.
This utility model provides exodermis
14
A kind of embodiment, exodermis
14
Using has the polyolefine material of color low smoke halogen-free to extrude in foaming layer
13
Surface, prevent moisture from invading foaming layer, the beneficially stability of core characteristic impedance, and utilize the difference of color to be beneficial to be distinguished, good distinguish.
This utility model provides sub-shield
2
A kind of embodiment, sub-shield
2
By
0.05mm
Two-sided conductive aluminum foil forms, and reduces and interferes phenomenon between each holding wire pair.
This utility model provides channelizing line
7
A kind of embodiment, channelizing line
7
Formed, with holding wire to sub-shield by least one tin plated steel wire articulation
2
Conducting surface contacts, and is conducive to external interference signals is imported the earth.
This utility model provides first total screen layer
3
, semiconductive sheath
4
With second total screen layer
5
Embodiment, first total screen layer
3
With tin-coated copper mesh grid form in
360
Degree is coated on cable pair
1
And channelizing line
7
Surface, count reaches
60%
Above, be conducive to increasing cable Electro Magnetic Compatibility, semiconductive sheath
4
Semiconductive polyolefine material is used to be coated on first total screen layer to extrude form
3
Surface, beneficially cable antistatic interference effect, second total screen layer
5
With tin-coated copper mesh grid form in
360
Degree is coated on semiconductive sheath
4
, strengthen cable entirety electromagnetic compatibility further.
This utility model provides oversheath
6
A kind of embodiment, oversheath
7
Material be polyolefine material; this utility model is made to possess good physical strength and weatherability and high and low temperature; and cable inner structure, without spreading and the features such as produce are raw without dripping off in combustion process, can effectively effectively be protected by flame after splendid anti-flue gas toxity corrosion and burning.
The high-frequency digital communications cable of the present utility model uses physical blowing alkene insulating barrier on core structure, core average dielectric constant is reduced with this structure, meet signal and transmit low attenuation requirement, improve core transfer rate, under the conditions of reaching same transmission performance, reduce core outside dimension, greatly
Amount saves insulant, thus reduces production cost.
Traditional high-fire-resistance
CMP
DBMS cable uses real core perfluoroethylene-propylene insulation, and transfer rate exists
65%
, this utility model uses polyolefin physical foam insulation, and its foaming reaches
50%
, transfer rate exists
80%
, insulant usage amount is real core perfluoroethylene-propylene materials'use amount
50%
, in frequency
500MHz
Time test its maximum attenuation value and be less than
45.3dB/100m
, near-end cross minima is
34.8dB
, at frequency
1KHz
Mutual capacitance≤
5.6pF/100m,
Dielectric strength
AC,15KV
,
5min
Do not puncture.Insulation resistance >=
5000M
Ω
.km
, sub-shield simultaneously
2
Surface extrudes one layer
Polyolefin sheath layer so that it is line is more stable to structure, characteristic impedance exists
500MHz
Meet
100
±
15
Ω。
Traditional transmission bandwidth
500MHz
LAN data cable is online to the pitch different above with design, by line pitch difference equilibrium principle reduced each line between interfering property of signal, additionally by total shielding construction with the form of vertical bag metal aluminum foil, reducing signal by the reflection effect of metal screen layer to be compromised, Electro Magnetic Compatibility is the best.This utility model cable is to promote Electro Magnetic Compatibility take separated-shielding on shielding construction and always shield the form combined, and i.e. every pair line signal individually carries out aluminium foil separated-shielding, then passes through channelizing line
7
Always shielding with mesh grid and be effectively combined, this structure possesses good Electro Magnetic Compatibility；Additionally for minimizing data cable operationally by static interference phenomenon, structurally face increases by one layer of semiconductive sheath
4
, i.e. extrude one layer of semiconductive polyethylene layer on total screen layer surface, simultaneously for reducing from external electromagnetic wave interference, at semiconductive sheath
4
Surface increases by one layer of total screen layer, i.e. uses metal net
360
Degree is coated on semiconductive sheath
4
Surface.
The fire-retardant data cable sheath of level uses perfluoroethylene-propylene material, and its oxygen index (OI) exists
95
Left and right, this material possesses higher flame retardant efficiency, but it contains fluorine halogen, can discharge a certain amount of flue gas toxity gas when burned, producing dropping, local area network wiring system uses this data cable that buildings can produce serious corrosivity harm when breaking out of fire simultaneously；High-frequency digital communications cable insulant of the present utility model and sheath material all use low smoke halogen-free polyolefin, this material does not contains halogen, when cable is burned, it will not discharge flue gas toxity gas, produce are raw without dripping off, flame will not spread, this kind of place electricity comprehensive digital communication cable is occurred not produce secondary hazardness when being burned at fire, energy effective guarantee personnel and property safety, this electricity comprehensive digital communication cable detects through National Fire building materials quality Supervision Test Center at present, and its fire resistance meets
GB31247-2014
In (cable and optical cable classification system for fire performance) standard
A
The requirement that level (not firing cable) specifies.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (2)
1. a high-frequency digital communications cable, it is characterised in that include cable pair, channelizing line, the first total screen layer, semiconductive
Sheath and oversheath；Described first total screen layer is coated on the surface of described cable pair and channelizing line, in described semiconductive
Sheath is coated on the surface of described first total screen layer, and described oversheath is coated on the surface of described semiconductive sheath；Described
Cable pair include two cable cores and cladding two cable cores sub-shield, described cable core include inner wire,
Endodermis, foaming layer and exodermis, described endodermis extrudes in the surface of described inner wire, and described foaming layer extrudes in described
The surface of cortex, described exodermis extrudes in the surface of described foaming layer；
Second total screen layer, described second total screen layer cladding it is additionally provided with between described semiconductive sheath and described oversheath
In the surface of described semiconductive sheath, described oversheath is coated on the surface of described second total screen layer；
Described inner wire is single copper free wire；
Described endodermis uses polyolefine material to extrude in the surface of described inner wire；
Described foaming layer uses polyolefine material to extrude in the surface of described endodermis through inflated with nitrogen physical blowing mode；
Described exodermis uses polyolefine material to extrude in the surface of described foaming layer；
Described sub-shield is made up of the two-sided conductive aluminum foil of 0.05mm；
Described channelizing line is formed by least one tin plated steel wire articulation；
Described first total screen layer is coated on the table of described cable pair and channelizing line with tin-coated copper mesh grid form in 360 degree
Face, count reaches more than 60%, and described semiconductive sheath uses semiconductive polyolefine material to be coated on described to extrude form
The surface of first total screen layer, described second total screen layer is coated on described semiconductive with tin-coated copper mesh grid form in 360 degree
Sheath.
A kind of high-frequency digital communications cable the most according to claim 1, it is characterised in that the material of described oversheath is poly-
Olefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620146216.3U CN205582567U (en) | 2016-02-26 | 2016-02-26 | High frequency digital communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620146216.3U CN205582567U (en) | 2016-02-26 | 2016-02-26 | High frequency digital communication cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205582567U true CN205582567U (en) | 2016-09-14 |
Family
ID=56870041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620146216.3U Active CN205582567U (en) | 2016-02-26 | 2016-02-26 | High frequency digital communication cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205582567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905629A (en) * | 2017-02-23 | 2017-06-30 | 湖北宇洪光电实业有限公司 | A kind of fire-retardant halogen-free cable sheath and cable |
| CN109411126A (en) * | 2018-11-29 | 2019-03-01 | 广州宇洪科技股份有限公司 | 5G intelligent wiring system high-frequency digital communication cable and its manufacturing method |
-
2016
- 2016-02-26 CN CN201620146216.3U patent/CN205582567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905629A (en) * | 2017-02-23 | 2017-06-30 | 湖北宇洪光电实业有限公司 | A kind of fire-retardant halogen-free cable sheath and cable |
| CN109411126A (en) * | 2018-11-29 | 2019-03-01 | 广州宇洪科技股份有限公司 | 5G intelligent wiring system high-frequency digital communication cable and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 402, room 11, 510000 software Road, Guangdong, Guangzhou, Tianhe District Patentee after: Guangzhou Yuhong Polytron Technologies Inc Address before: 511450, No. two, six Industrial Park Street, two fertile farmland Industrial Park, Baiyun District, Guangdong, Guangzhou Patentee before: GUANGZHOU CITY YU-HUNG ELECTRIC WIRE & CABLE INDUSTRY CO., LTD. |