CN204480713U - A kind of fire-resistant DC traction cable for track traffic - Google Patents
A kind of fire-resistant DC traction cable for track traffic Download PDFInfo
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- CN204480713U CN204480713U CN201520141288.4U CN201520141288U CN204480713U CN 204480713 U CN204480713 U CN 204480713U CN 201520141288 U CN201520141288 U CN 201520141288U CN 204480713 U CN204480713 U CN 204480713U
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- silicone rubber
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Abstract
The utility model is a kind of fire-resistant DC traction cable for track traffic, the cross-sectional structure of this cable for from inside to outside successively by conductor, fireproof mica belt, the first fire-resisting ceramic silicone rubber layer, crosslinked polyetylene insulated layer, water blocking layer, vertical alclad plastic composite strip layer, extrude crosslinked linear density polyethylene layer, the first glass fibre belt, the second fire-resisting ceramic silicone rubber layer, the second glass fibre belt, armour, halogen-free low-smoke high-flame material restrictive coating form concentric circles, wherein armour is made up of copper strips or steel band.The utility model has that IA is fire-resistant, IA is fire-retardant, low smoke and zero halogen, antiultraviolet, anti-ant, protection against rodents, safety and environmental protection performance, and this cable fire effect properties is excellent, close to mineral insulated cable performance.
Description
Technical field:
The utility model relates to a kind of fire-resistant DC traction cable for track traffic.
Background technology:
At present, domestic fire-resisting cable generally adopts fire-resistant isinglass belt lapping layer as cable fire layer, and LSOH anti-flaming glass fibre belt class material, the low cigarette polyolefine material of high-flame-retardanthalogen-free halogen-free are as the refuge floor (or claiming oxygen barrier layer) of cable.Track traffic DC traction cable insulating material is crosslinked polyethylene, ethylene-propylene rubber, and watertight composition mainly adopts aluminum plastic composite belt longitudinal bag to add pe sheath.In a fire, LSOH anti-flaming glass fibre belt class material, the low cigarette polyolefine material of high-flame-retardanthalogen-free halogen-free can stand the baked wheaten cake of certain hour as the refuge floor (or claim oxygen barrier layer) of cable, as continued to be burnt, LSOH anti-flaming glass fibre belt class material is burnt brokenly, the low cigarette polyolefine material of high-flame-retardanthalogen-free halogen-free gradually powders and comes off, and the crosslinked polyethylene of insulating barrier, ethylene-propylene rubber and watertight composition polyethylene are combustible materials, at high temperature become viscous state already, burn once meeting fire, send a large amount of black smoke, and play the reaction helping fire to stretch, refuge floor thus lose protective effect.When flame breaks through to flame retardant coating, the last line of defense that fire-resistant isinglass belt lapping layer will be whole cable fire-proof, now, fire-resistant isinglass belt lapping layer under hot environment before, already by the crosslinked polyethylene of insulating barrier, ethylene-propylene rubber dipping, in fire endurance period combustion process, fire-resistant isinglass belt lapping layer gradually burns brokenly, peels off, thus lost efficacy, electric wire is easy to breakdown and causes short circuit, thus is difficult to ensure electric power in case of fire safe and smooth.Common fire-resisting cable, by correlation test, meets relevant criterion requirement, but fire-resistant reliability is not high.
Summary of the invention:
The utility model proposes a kind of fire-resistant DC traction cable for track traffic, its objective is that will to provide a kind of fire-resistant, fire-retardant, waterproof, nontoxic, environmental protection, fail safe high, under being suitable for specific disaster scenario, still can maintain the track traffic DC traction cable of energising.
Technical solution of the present utility model: the cross-sectional structure of this cable for from inside to outside successively by conductor, fireproof mica belt, the first fire-resisting ceramic silicone rubber layer, crosslinked polyetylene insulated layer, water blocking layer, vertical alclad plastic composite strip layer, extrude crosslinked linear density polyethylene layer, the first glass fibre belt, the second fire-resisting ceramic silicone rubber layer, the second glass fibre belt, armour, halogen-free low-smoke high-flame material restrictive coating form concentric circles, wherein armour is made up of copper strips or steel band.
The beneficial effects of the utility model: the 1. compound flame retardant coating adopting fire-resistant isinglass belt and the first fire-resisting ceramic silicone rubber composition, can improve the fire resistant flame retardant of cable.2. there is armour at skin, can prevent ant mouse from biting.Antiultraviolet can be reached in conjunction with compound flame retardant coating simultaneously.
Accompanying drawing illustrates:
Accompanying drawing 1 is cross sectional representation of the present utility model.
In figure 1 is conductor, 2, and are fireproof mica belts, 3 are first fire-resisting ceramic silicone rubber layers, 4 are crosslinked polyetylene insulated layers, 5 are water blocking layers, 6 to be vertical alclad plastic composite strip layers, 7 be that to extrude crosslinked linear density polyethylene layer, 8 are first glass fibre belts, 9 are second fire-resisting ceramic silicone rubber layers, 10 are second glass fibre belts, 11 are armours, 12 is halogen-free low-smoke high-flame material restrictive coatings.
Embodiment:
As shown in Figure 1, the cross-sectional structure of this cable for from inside to outside successively by conductor 1, fireproof mica belt 2, first fire-resisting ceramic silicone rubber layer 3, crosslinked polyetylene insulated layer 4, water blocking layer 5, vertical alclad plastic composite strip layer 6, extrude crosslinked linear density polyethylene layer 7, first glass fibre belt 8, second fire-resisting ceramic silicone rubber layer 9, second glass fibre belt 10, armour 11, halogen-free low-smoke high-flame material restrictive coating 12 form concentric circles, wherein armour is made up of copper strips or steel band.
The sectional area of conductor 1 of the present utility model is 120 ~ 1000mm
2, geometry is round, is well-regulated by the soft round copper wire that some diameters are identical, concentric type, and successive layers time is according to different directions strand system.Flame retardant coating to extrude with the additional first fire-resisting ceramic silicone rubber layer 3 of the fireproof mica belt 2 of high-quality Mica tape or wrapped, vertical bag combines, and mica tape has excellent fire resistant flame retardant effect, and still can keep excellent dielectric strength under ignition temperature.First fire-resisting ceramic silicone rubber layer 3 adopts fire-resisting ceramic silicone rubber insulating material, nonpoisonous and tasteless at normal temperatures, has good flexibility and elasticity, and good processability.Under high temperature more than 500 DEG C and flame ablation, organic principle ablatedly in a short period of time can change into hard ceramic-like material, form the isolation layer that one deck is good, to stop that flame and other material enter Mica tape layer, Mica tape layer not by other Substances Pollution also not with flame contact.The fire-resisting ceramic silicone rubber insulating material ablation time is longer, and temperature is higher, and hard effect is more obvious, the fire-resistant environment of 1200 ~ 1500 DEG C can be reached, by burning after remain without any ashes, there are good insulation property simultaneously, and resistance to Water spray, vibrations.The compound flame retardant coating of fireproof mica belt 2 and the first fire-resisting ceramic silicone rubber layer 3 composition really serves excellent fireproofing function and the object of safety and environmental protection.Crosslinked polyetylene insulated layer 4 adopts the cross-linked polyethylene insulating material of Nano titanium dioxide, effectively suppresses space charge by Nano titanium dioxide particle, reinforced insulation electrical breakdown performance, increases cable useful life.Water blocking layer 5 adopts waterstop wrapped, prevents moisture longitudinal diffusion.Watertight composition adopts vertical alclad plastic composite strip layer 6 and extrudes crosslinked linear density polyethylene restrictive coating 7, extrudes crosslinked linear density polyethylene layer 7 and bonds firmly with vertical alclad plastic composite strip layer 6, thus forms complete aluminium-mould bond capacity.Extrude the effective working temperature of crosslinked linear density polyethylene layer 7 crosslinked polyethylene and be 90 DEG C, be more suitable for cable operating temperature relative to uncrosslinked linear medium density polyethylene or high density polyethylene (HDPE).Refuge floor is formed by three layers, and internal layer is the first glass fibre belt 8, and centre is the second fire-resisting ceramic silicone rubber layer 9, and skin is the second glass fibre belt 10.When cable is heated in a fire, material expansion within refuge floor, the first glass fibre belt 8 cushioning effect.Second glass fibre belt 10 is as the buffer protection effect between the second fire-resisting ceramic silicone rubber layer 9 and armour 11.Armour 11 adopts copper strips or steel band lock armo, and put up wrapped formula armouring relative to general dual layer more tight, reliable, bending property is better.Flame and imflammable gas are more difficult to enter cable inside by armour.Under fire hazard environment, armour 11 and the second fire-resisting ceramic silicone rubber layer 9 effectively form closely knit fire compartment wall, thus form synergy.Halogen-free low-smoke high-flame material restrictive coating 12 adopts special high-quality halogen-free low-smoke high-flame material, has low smoke and zero halogen, antiultraviolet, fire-retardant, the anti-ant of category-A, protection against rodents, safety and environmental protection performance.
Claims (2)
1., for a fire-resistant DC traction cable for track traffic, it is characterized in that: the cross-sectional structure of this cable for from inside to outside successively by conductor, fireproof mica belt, the first fire-resisting ceramic silicone rubber layer, crosslinked polyetylene insulated layer, water blocking layer, vertical alclad plastic composite strip layer, extrude crosslinked linear density polyethylene layer, the first glass fibre belt, the second fire-resisting ceramic silicone rubber layer, the second glass fibre belt, armour, halogen-free low-smoke high-flame material restrictive coating form concentric circles.
2. a kind of fire-resistant DC traction cable for track traffic according to claim 1, is characterized in that described armour is copper strips or steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520141288.4U CN204480713U (en) | 2015-03-09 | 2015-03-09 | A kind of fire-resistant DC traction cable for track traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520141288.4U CN204480713U (en) | 2015-03-09 | 2015-03-09 | A kind of fire-resistant DC traction cable for track traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204480713U true CN204480713U (en) | 2015-07-15 |
Family
ID=53636491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520141288.4U Expired - Fee Related CN204480713U (en) | 2015-03-09 | 2015-03-09 | A kind of fire-resistant DC traction cable for track traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204480713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405518A (en) * | 2015-12-07 | 2016-03-16 | 无锡裕德电缆科技有限公司 | <=1500V DC traction water-proof power cable for rail transit |
| CN113066606A (en) * | 2021-02-02 | 2021-07-02 | 安徽新科电缆集团股份有限公司 | Multifunctional direct-current traction cable for rail transit |
-
2015
- 2015-03-09 CN CN201520141288.4U patent/CN204480713U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405518A (en) * | 2015-12-07 | 2016-03-16 | 无锡裕德电缆科技有限公司 | <=1500V DC traction water-proof power cable for rail transit |
| CN113066606A (en) * | 2021-02-02 | 2021-07-02 | 安徽新科电缆集团股份有限公司 | Multifunctional direct-current traction cable for rail transit |
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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: 20150715 Termination date: 20180309 |