CN202650656U - Railway digital signal cable with internal shielding layer - Google Patents
Railway digital signal cable with internal shielding layer Download PDFInfo
- Publication number
- CN202650656U CN202650656U CN 201220310600 CN201220310600U CN202650656U CN 202650656 U CN202650656 U CN 202650656U CN 201220310600 CN201220310600 CN 201220310600 CN 201220310600 U CN201220310600 U CN 201220310600U CN 202650656 U CN202650656 U CN 202650656U
- Authority
- CN
- China
- Prior art keywords
- layer
- digital signal
- cable
- internal
- signal cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Abstract
The utility model provides a railway digital signal cable with an internal shielding layer and the railway digital signal cable comprises cable cores, wherein the cable core comprises conductors, insulating layers and the internal shielding layer, the insulating layer is wrapped outside of the conductor and is a skin-foam-skin physical-foaming polyolefin insulating layer, and the internal shielding layer is wrapped outside of the insulating layers and is a copper-wire-braided internal shielding layer. An inner sheath layer, an armor layer and an oversheath layer are successively wrapped outside the internal shielding layer. The inner sheath layer is an aluminium inner sheath layer, the armor layer is a double-steel-tape armor layer and the oversheath layer is a polyethylene oversheath layer. Blend viscose is filled between the internal shielding layer and the inner sheath layer. According to the railway digital signal cable with the internal shielding layer, the four-conductor group shielding aluminum sheath has an excellent shielding performance. The railway digital signal cable can be used for a trunk line or a high-voltage interference region of a railway electrification district and has the advantages of high mechanical strength, good corrosion resistant and cold resistant performances, and strong impact force resistance.
Description
Technical field
The utility model relates to a kind of railway digital signal cable, relates in particular to a kind of internal screening railway digital signal cable.
Background technology
Stube cable in the railway signal system between relevant devices and the control appliance device is carrying out when frequently transmit with cable, or works as and exist cross-talk between the shielding group under the core ground-fault condition and affected Security of the system.With this, how to strengthen between the shielding properties, interference free performance, elimination shielding group of cable existing the cross-talk impact, guarantee the fail safe of railway signal system, be the problem that railway signal cable should solve in process of production.
The utility model content
The purpose of this utility model provides a kind of internal screening railway digital signal cable and solves in the railway signal system stube cable between the relevant devices and control appliance device and carrying out when frequently transmit with cable, or works as under the core ground-fault condition and exist the problem that cross-talk has affected security of system between the shielding group.
Technical solution of the present utility model is:
A kind of internal screening railway digital signal cable, comprise cable core, described cable core comprises conductor, insulating barrier and internal shield, described conductor is wrapped with insulating barrier, described insulating barrier is skin foam skin physical blowing polyolefin insulation layer, described insulating barrier is wrapped with internal shield, described internal shield is the proof copper-wire braided internal shield, described internal shield is enclosed with inner restrictive coating outward successively, armour and external sheath layer, described inner restrictive coating is the aluminium inner restrictive coating, described armour is the double-tape armor layer, and described external sheath layer is the outer protective polyethylene jacket layer, is filled with mixed viscose glue between described internal shield and inner restrictive coating.
Further improve and be: the quantity of described cable core is seven, and every cable core comprises four described conductors, and described conductor is copper core or tin-coated copper core.
A kind of internal screening railway digital signal cable of the utility model, be twisted into four line conductor groups by four described conductors, and carried out individually shielded to four line conductor group groups, thereby improved the cable near-end crosstalk attenuation, when efficiently solving the Railway Signal Information of transmission same frequency in the root cable, the interference defence problem between each transmission line group.Four line conductor group screens cover aluminium sheath makes cable have good shielding properties, can be used for main line or the forceful electric power mush area of railway electrification section.This kind internal screening railway digital signal cable mechanical strength height, anticorrosion, cold tolerance are good, and anti-impact force is strong.And the cable screening wire group has good shielding properties, can improve the antijamming capability between the line group.Be filled with mixed viscose glue between described internal shield and inner restrictive coating, can guarantee the rounding property of cable, improve the fail safe of cable, for low cost is considered then to need not cable is filled processing.This kind internal screening railway digital signal cable cable has improved the antijamming capability between the line group, realized with frequently transmitting with cable, and two signal cable equivalences of cross-talk and minute cable between the shielding group under the core ground-fault condition, effectively improved Security of the system.This kind internal screening railway digital signal cable has higher mechanical strength, and good anticorrosion, cold tolerance, high shielding properties can satisfy electric railway to all-environment requirements such as highfield interference, humidity, severe cold.
Be applicable to the connection between the relevant devices and control appliance device in the railway signal system, can realize the 1MHz analog signal, 2Mbit/s digital signal, rated voltage exchange the transmission of 750V or direct current 1100V and following system control information and electric energy.
The beneficial effects of the utility model are: a kind of internal screening railway digital signal cable of the utility model, four line conductor group screens cover aluminium sheath makes cable have good shielding properties, can be used for main line or the forceful electric power mush area of railway electrification section.And this kind internal screening railway digital signal cable mechanical strength height, anticorrosion, cold tolerance are good, and anti-impact force is strong.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Wherein: 1-conductor, 2-insulating barrier, 3-internal shield, 4-inner restrictive coating, 5-armour, 6-external sheath layer.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, present embodiment provides a kind of internal screening railway digital signal cable, comprise cable core, described cable core comprises conductor 1, insulating barrier 2 and internal shield 3, described conductor 1 is wrapped with insulating barrier 2, described insulating barrier 2 is skin foam skin physical blowing polyolefin insulation layer, described insulating barrier 2 is wrapped with internal shield 3, described internal shield 3 is the proof copper-wire braided internal shield, the described internal shield 3 outer inner restrictive coatings 4 that are enclosed with successively, armour 5 and external sheath layer 6, described inner restrictive coating 4 is the aluminium inner restrictive coating, and described armour 5 is the double-tape armor layer, and described external sheath layer 6 is the outer protective polyethylene jacket layer, 4 of described internal shield 3 and inner restrictive coatings are filled with mixed viscose glue, the quantity of described cable core is seven, and every cable core comprises four described conductors 1, and described conductor 1 is copper core or tin-coated copper core.
A kind of internal screening railway digital signal cable of present embodiment, be twisted into four line conductor groups by four described conductors, and carried out individually shielded to four line conductor group groups, thereby improved the cable near-end crosstalk attenuation, when efficiently solving the Railway Signal Information of transmission same frequency in the root cable, the interference defence problem between each transmission line group.Four line conductor group screens cover aluminium sheath makes cable have good shielding properties, can be used for main line or the forceful electric power mush area of railway electrification section.This kind internal screening railway digital signal cable mechanical strength height, anticorrosion, cold tolerance are good, and anti-impact force is strong.And the cable screening wire group has good shielding properties, can improve the antijamming capability between the line group.Be applicable to the connection between the relevant devices and control appliance device in the railway signal system, can realize the 1MHz analog signal, 2Mbit/s digital signal, rated voltage exchange the transmission of 750V or direct current 1100V and following system control information and electric energy.
The beneficial effect of present embodiment is: a kind of internal screening railway digital signal cable of present embodiment, four line conductor group screens cover aluminium sheath makes cable have good shielding properties, can be used for main line or the forceful electric power mush area of railway electrification section.And this kind internal screening railway digital signal cable mechanical strength height, anticorrosion, cold tolerance are good, and anti-impact force is strong.
Claims (2)
1. internal screening railway digital signal cable, it is characterized in that: comprise cable core, described cable core comprises conductor (1), insulating barrier (2) and internal shield (3), described conductor (1) is wrapped with insulating barrier (2), described insulating barrier (2) is skin foam skin physical blowing polyolefin insulation layer, described insulating barrier (2) is wrapped with internal shield (3), described internal shield (3) is the proof copper-wire braided internal shield, the outer inner restrictive coating (4) that is enclosed with successively of described internal shield (3), armour (5) and external sheath layer (6), described inner restrictive coating (4) is the aluminium inner restrictive coating, described armour (5) is the double-tape armor layer, described external sheath layer (6) is the outer protective polyethylene jacket layer, is filled with mixed viscose glue between described internal shield (3) and inner restrictive coating (4).
2. a kind of internal screening railway digital signal cable as claimed in claim 1, it is characterized in that: the quantity of described cable core is seven, and every cable core comprises four described conductors (1), and described conductor (1) is copper core or tin-coated copper core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310600 CN202650656U (en) | 2012-06-29 | 2012-06-29 | Railway digital signal cable with internal shielding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310600 CN202650656U (en) | 2012-06-29 | 2012-06-29 | Railway digital signal cable with internal shielding layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650656U true CN202650656U (en) | 2013-01-02 |
Family
ID=47419723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310600 Expired - Fee Related CN202650656U (en) | 2012-06-29 | 2012-06-29 | Railway digital signal cable with internal shielding layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105001491A (en) * | 2015-07-15 | 2015-10-28 | 安徽鸿海电缆有限公司 | High-strength electrical-ageing-proof cable |
-
2012
- 2012-06-29 CN CN 201220310600 patent/CN202650656U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105001491A (en) * | 2015-07-15 | 2015-10-28 | 安徽鸿海电缆有限公司 | High-strength electrical-ageing-proof cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203300251U (en) | Variable frequency cable used for ships and warships | |
| CN202650656U (en) | Railway digital signal cable with internal shielding layer | |
| CN202332403U (en) | Flame-retardant waterproof composite shielding high-frequency digital cable | |
| CN101303916B (en) | Computer cable for nuclear power plant | |
| CN204332468U (en) | A kind of six conductor cable | |
| CN204288912U (en) | Intelligent frequency-conversion cable is pressed in one | |
| CN204480785U (en) | A kind of aviation armouring flexible electric power cable | |
| CN201667224U (en) | Novel flame retardant high voltage frequency conversion cable | |
| CN205670468U (en) | A kind of wisdom energy tensile type signal transmission transmits composite cable with electric power | |
| CN203192525U (en) | Fire-proof flame-retardant variable frequency cable | |
| CN202042267U (en) | Marine power cable with flame-retardant polyolefin inner sheath and cross-linked polyolefin outer sheath | |
| CN202042261U (en) | Marine fire-resisting power cable with polyolefin inner and outer protecting jackets | |
| CN203706716U (en) | High-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable | |
| CN103854770A (en) | Direct-current conducting wire | |
| CN202816485U (en) | Medium-voltage shielding cable | |
| CN205016277U (en) | Shield effectual signal cable | |
| CN203588748U (en) | Concentric conductor type dual-shielding variable-frequency cable | |
| CN209168810U (en) | A kind of cable for elevator shaft that strong and weak electricity combines | |
| CN217008777U (en) | Double-layer shielding high-speed transmission cable | |
| CN203055536U (en) | Frequency conversion power cable | |
| CN202816484U (en) | Waterproof shielding cable | |
| CN202258450U (en) | Highly shielded frequency conversion cable | |
| CN203118558U (en) | Cable used for power measurement | |
| CN202042265U (en) | Marine power cable with fire-resistant cross-linked polyethylene insulation and cross-linked polyolefin sheath | |
| CN205158927U (en) | Frequency conversion flexible cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |