CN203706716U - High-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable - Google Patents
High-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable Download PDFInfo
- Publication number
- CN203706716U CN203706716U CN201420010812.XU CN201420010812U CN203706716U CN 203706716 U CN203706716 U CN 203706716U CN 201420010812 U CN201420010812 U CN 201420010812U CN 203706716 U CN203706716 U CN 203706716U
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- China
- Prior art keywords
- signal cable
- railway signal
- flame retardant
- barrier layer
- cable
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Abstract
The utility model discloses a high-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable which comprises an insulating core. The insulating core is successively wrapped in a comprehensive sheath, an armor layer and an oversheath. The railway signal cable is characterized in that an inner oxygen isolating layer is arranged between the comprehensive sheath and the armor layer, and an outer oxygen isolating layer is arranged between the armor layer and the oversheath. The two oxygen isolating layers can effectively improve the flame retardant effect of the cable, the comprehensive oxygen index of the cable is over 36, and the cable can satisfy level-B flame retardant requirement and above; and the armor layer is made of a high permeability material, thereby improving the inductance of the armor layer, reducing the shielding coefficient, and improving the heavy current interference preventive performance.
Description
Technical field
The utility model relates to field of cables, and particularly a kind of rated voltage that is applicable to exchanges 500V or direct current 1000V and following railway signal system track circuit, row control automatics and train overspeed protection system ground and arranges etc. in equipment for transmitting the high flame retardant overcurrent proof interference environment-friendly type railway signal cable fixedly laying for railway signal or some automatics.
Background technology
Along with the electrified development of China railways, the electromagnetic radiation that the communication line in electric railway region is subject to is strengthened just day by day, in order to ensure communication quality, in the urgent need to a kind of signal cable that can disturb stronger electrified section to use at forceful electric power; And the flame retardant effect of current signal cable is not outstanding yet.
Utility model content
Deficiency and the defects such as that technical problem to be solved in the utility model is is poor for the overcurrent proof interference of existing signal cable, poor fire, provide a kind of as above high flame retardant overcurrent proof of problem that can solve to disturb environment-friendly type railway signal cable.
The technical problem that the utility model solves can realize by the following technical solutions:
High flame retardant overcurrent proof disturbs environment-friendly type railway signal cable, comprise insulated wire cores, be coated with successively from the inside to the outside integrated sheath, armour, outer jacket in described insulated wire cores periphery, it is characterized in that, between described integrated sheath and described armour, be provided with interior oxygen barrier layer, between described armour and described outer jacket, be provided with outer oxygen barrier layer.
In a preferred embodiment of the present utility model, described interior oxygen barrier layer is for extruding oxygen barrier layer.
In a preferred embodiment of the present utility model, described outer oxygen barrier layer is wrapped oxygen barrier layer.
In a preferred embodiment of the present utility model, described armour is the armour that adopts high permeability material to make.
In a preferred embodiment of the present utility model, described outer jacket is halogen-free and low-smoke flame-retardant polyolefin outer jacket.
In a preferred embodiment of the present utility model, described insulated wire cores is by some stranded the forming of insulated copper core conductor.
Owing to having adopted technical scheme as above, double-layer oxygen-isolating layer of the present utility model can effectively improve the flame retardant effect of cable, makes the comprehensive oxygen index of cable more than 36, and cable reaches the above fire-retardant requirement of B level; Meanwhile, armour of the present utility model adopts high permeability material to make, and has increased the inductance of cable sheath, has reduced the shielding factor of cable, has improved the overcurrent proof jamming performance of cable.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Shown in Figure 1, a kind of high flame retardant overcurrent proof disturbs environment-friendly type railway signal cable to comprise insulated wire cores 10, insulated wire cores 10 is by some stranded the forming of insulated copper core conductor 11, each insulated copper-core conductor 11 forms by some copper conductors 12 are stranded, each copper conductor 12 is coated with insulating barrier 13, and the gap between some copper conductors 12 utilizes bundle yarn 14 to fill.
Be coated with successively from the inside to the outside integrated sheath 20 in insulated wire cores 10 peripheries, extrude oxygen barrier layer 30, armour 40, wrapped oxygen barrier layer 50 and outer jacket 60.Armour 40 is the armour that adopts high permeability material to make, and has increased the inductance of cable sheath, has reduced the shielding factor of cable, has improved the overcurrent proof jamming performance of cable.
Extrude the flame retardant effect that two oxygen barrier layer structures that oxygen barrier layer 30 and wrapped oxygen barrier layer 50 form can effectively improve cable, make the comprehensive oxygen index of cable more than 36, cable reaches the above fire-retardant requirement of B level.
Outer jacket 60 is halogen-free and low-smoke flame-retardant polyolefin outer jacket, has further improved the flame retardant effect of cable.
More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. high flame retardant overcurrent proof disturbs environment-friendly type railway signal cable, comprise insulated wire cores, be coated with successively from the inside to the outside integrated sheath, armour, outer jacket in described insulated wire cores periphery, it is characterized in that, between described integrated sheath and described armour, be provided with interior oxygen barrier layer, between described armour and described outer jacket, be provided with outer oxygen barrier layer.
2. high flame retardant overcurrent proof as claimed in claim 1 disturbs environment-friendly type railway signal cable, it is characterized in that, described interior oxygen barrier layer is for extruding oxygen barrier layer.
3. high flame retardant overcurrent proof as claimed in claim 1 or 2 disturbs environment-friendly type railway signal cable, it is characterized in that, described outer oxygen barrier layer is wrapped oxygen barrier layer.
4. high flame retardant overcurrent proof as claimed in claim 3 disturbs environment-friendly type railway signal cable, it is characterized in that, described armour is the armour that adopts high permeability material to make.
5. high flame retardant overcurrent proof as claimed in claim 4 disturbs environment-friendly type railway signal cable, it is characterized in that, described outer jacket is halogen-free and low-smoke flame-retardant polyolefin outer jacket.
6. high flame retardant overcurrent proof as claimed in claim 5 disturbs environment-friendly type railway signal cable, it is characterized in that, described insulated wire cores is by some stranded the forming of insulated copper core conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420010812.XU CN203706716U (en) | 2014-01-08 | 2014-01-08 | High-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420010812.XU CN203706716U (en) | 2014-01-08 | 2014-01-08 | High-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706716U true CN203706716U (en) | 2014-07-09 |
Family
ID=51057119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420010812.XU Expired - Fee Related CN203706716U (en) | 2014-01-08 | 2014-01-08 | High-flame-retardant heavy-current-interference-preventive environmental-friendly railway signal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714901A (en) * | 2014-01-08 | 2014-04-09 | 金杯电工衡阳电缆有限公司 | High-inflaming-retarding strong-current-interference-prevention environment-friendly railway signal cable |
-
2014
- 2014-01-08 CN CN201420010812.XU patent/CN203706716U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714901A (en) * | 2014-01-08 | 2014-04-09 | 金杯电工衡阳电缆有限公司 | High-inflaming-retarding strong-current-interference-prevention environment-friendly railway signal cable |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20220108 |