CN209312481U - A kind of communication cable used for rolling stock - Google Patents
A kind of communication cable used for rolling stock Download PDFInfo
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- CN209312481U CN209312481U CN201822140048.9U CN201822140048U CN209312481U CN 209312481 U CN209312481 U CN 209312481U CN 201822140048 U CN201822140048 U CN 201822140048U CN 209312481 U CN209312481 U CN 209312481U
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- rolling stock
- insulated wire
- communication cable
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Abstract
The utility model discloses a kind of communication cables used for rolling stock, it is characterized by: including several insulated wire cores and oversheath, several insulated wire cores are regular twisted, oversheath is arranged on the outside of the insulated wire cores that several have been twisted, every insulated wire cores include conductor and insulating layer, insulating layer includes inner insulating layer, foaming layer and the external insulation layer being successively arranged in from inside to outside on the outside of conductor, and wherein foaming layer is octafluorocyclobutane physical blowing layer.The utility model uses octafluorocyclobutane physical foaming technology, and compared with traditional nitrogen and carbon dioxide physically foamed technology, physical mechanical property surplus increases by 24 ~ 32%, i.e., under identical cable use environment, hence it is evident that extend cable service life.
Description
Technical field
The utility model relates to a kind of communication cable, especially a kind of communication cable used for rolling stock.
Background technique
Existing TCN network communication cable used for rolling stock generally uses polyolefin interior insulation, foamed insulation, outside polyolefin
The three-layer co-extruded mode that insulate meets cable properties, and wherein polyolefin insulation meets electric property, mechanical and physical performance and prevents
Fiery performance, foamed insulation meet transmission performance.After insulation foaming, insulation relative dielectric constant can be reduced, hence it is evident that promote transporting
Can, but due to the introducing of honeycomb structure in insulating layer, also being remarkably decreased along with physical mechanical property and heat resistance, increases
A possibility that having added product to be damaged in cable wiring manufacture and operational process.
Conventional locomotive vehicle communication cable generally uses nitrogen and carbon dioxide physically foamed technology, is guaranteeing machinery
Under the premise of physical property, it is made to have excellent transmission performance, the wiring that can be used in rolling stock TCN network communication.But
It is that its physical mechanical property and heat resistance are lower, influences the operation steady in a long-term of cable.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of communication cables used for rolling stock.
In order to solve the above technical problems, the technical scheme adopted by the utility model is:
A kind of communication cable used for rolling stock, it is characterised in that: include several insulated wire cores and oversheath, several eradications
Edge core is regular twisted, and oversheath is arranged on the outside of the insulated wire cores that several be twisted, every insulated wire cores comprising conductor with
Insulating layer, insulating layer includes inner insulating layer, foaming layer and the external insulation layer being successively arranged in from inside to outside on the outside of conductor, wherein sending out
Alveolar layer is octafluorocyclobutane physical blowing layer.
Further, the conductor carries out regular be made by twisting by more tin plating soft copper silks with 11-16 times of pitch.
Further, the inner insulating layer and external insulation layer are made of polyolefine material, inner insulating layer, foaming layer and outer
Insulating layer is closely extruded on the outside of conductor using three-layer co-extruded equipment.
Further, wrapping layer is provided on the outside of several insulated wire cores, wrapping layer is using polyester belt or foaming PP
Band progress is wrapped, and wrapped overlapping rate is 20~30%, and lapping direction is left-hand.
Further, composite shielding layer is provided on the outside of the wrapping layer, composite shielding layer includes aluminium foil longitudinal wrap layer and plating
Tin copper-wire braided layer, the aluminium foil aluminium of aluminium foil longitudinal wrap layer is faced outwardly to be in contact with tincopper fuse wire braided armor, tincopper fuse wire braided armor
Braid angle is 30-50 °, and count is greater than 80%.
Further, the oversheath is made using the low cigarette of cross-linking radiation without rate polyolefine material, using crowded pipe mode packet
It overlays on the outside of composite shielding layer.
The utility model compared with prior art, has the following advantages that and effect: the utility model uses octafluorocyclobutane
Physical foaming technology, compared with traditional nitrogen and carbon dioxide physically foamed technology, physical mechanical property surplus increases by 24 ~ 32%,
I.e. under identical cable use environment, hence it is evident that extend cable service life.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of communication cable used for rolling stock of the utility model.
Specific embodiment
Below by embodiment, the utility model is described in further detail, and following embodiment is to the utility model
Explanation and the utility model is not limited to following embodiment.
As shown in Figure 1, the utility model is by taking 120 Ω 4 × 0.5 of TCN network communication cable MVB used for rolling stock as an example.
A kind of communication cable used for rolling stock includes 3,4 regular strands of insulated wire cores 4 of 4 insulated wire cores 4 and oversheath
It closes, 4 insulated wire cores being twisted, 4 outside is arranged in oversheath 3, and every insulated wire cores 4 include conductor 5 and insulating layer, insulation
Layer includes inner insulating layer 6, foaming layer 7 and the external insulation layer 8 being successively arranged in from inside to outside on the outside of conductor, and wherein foaming layer 7 is
Octafluorocyclobutane physical blowing layer.
Conductor 5 carries out regular be made by twisting by more tin plating soft copper silks with 11-16 times of pitch.Inner insulating layer 6 and external insulation
Layer 8 is made of polyolefine material, and inner insulating layer 6, foaming layer 7 and external insulation layer 8 are closely extruded in using three-layer co-extruded equipment
5 outside of conductor.
Wrapping layer 1 is provided on the outside of 4 insulated wire cores, wrapping layer 1 is wrapped using polyester belt or foaming PP belt progress, wrapped
Overlapping rate is 20~30%, and lapping direction is left-hand.Composite shielding layer 2 is provided on the outside of wrapping layer 1, composite shielding layer 2 includes aluminium
Foil longitudinal wrap layer and tincopper fuse wire braided armor, the aluminium foil aluminium of aluminium foil longitudinal wrap layer is faced outwardly to be in contact with tincopper fuse wire braided armor, tin plating
The braid angle of copper-wire braided layer is 30-50 °, and count is greater than 80%.Oversheath 3 is using the low cigarette of cross-linking radiation without rate polyolefin
Material is made, and is coated on 2 outside of composite shielding layer using crowded pipe mode.
A kind of manufacturing method of communication cable used for rolling stock comprising the steps of:
Step 1: conductor production uses more tin plating soft copper silks to be made by twisting conductor so that 11-16 times of pitch progress is regular；
Twisted tinned copper conductor smooth in appearance rounding, tin layers can effectively prevent cable to be corroded, and pliability with higher, can be
Small space laying.
Step 2: insulated wire cores production, the insulating layer of insulated wire cores are " skin foam skin " three-layer co-extrusion physic foaming insulation knots
Structure, it is using three-layer co-extruded equipment that polyolefin inner insulating layer, octafluorocyclobutane physical blowing layer and polyolefin external insulation layer is close
It is extruded on conductor, insulating layer, which is easily peeled off, answers smooth, uniform color without damaging conductor or coating, surface.The average thickness of insulation
Degree be more than or equal to nominal value, thinnest point thickness be not less than nominal value 90%-0.1mm, the structure when guaranteeing transmission performance,
And meet mechanical property requirements.Wherein, octafluorocyclobutane physical blowing layer foaming process be by octafluorocyclobutane and carbon dioxide,
Nitrogen is mixed in 5:3:2 ratio, reduces its liquefaction point, is being heated by gas injection machine by 60-100 DEG C, it is filled by liquid
Dividing becomes the technical requirements that gaseous state makes the uniformity of insulating layer foam degrees and abscess reach design.
Step 3: the insulated wire cores of cable core production, 4 different colours are twisted with 13-17 times of pitch dextrad by color sequences
Cable core is made, laying tension answers uniformly and carries out back twist when twisted, it is ensured that deformation occurs or has for insulated wire cores 4 in stranding process
Damage, use outside twisted cable core polyester belt or foaming PP belt carry out it is wrapped form rich covering 1, wrapped overlapping rate control 20~
30%, lapping direction is left-hand, and structure design is able to satisfy Cable Bending Radius and transmission performance requirement.
Step 4: composite shielding layer cladding, wrapped rear cable core use aluminium foil longitudinal wrap and tinned copper wire to weave from inside to outside, aluminium
Foil aluminium is faced outwardly to be in contact with tincopper fuse wire braided armor, and to reach complete shielding, braid angle is controlled at 30-50 °, and count is big
In 80%.Composite shielding layer designs aluminium face and tinned copper wire is in close contact, and reaches whole coverings, guarantees excellent shielding properties, electricity
Gas transmission performance.
Step 5: outer jacket squeezes out cladding, and outer jacket uses the low cigarette of cross-linking radiation without rate polyolefine material, using crowded Guan Fang
Formula is continuous by material, is closely coated on cable core, surface answer it is smooth, the defects of no hole, crackle, bubble, outer jacket
Thickness should accord with nominal thickness requirement, extrude outer diameter rounding, and thinnest point thickness is not less than the 85%-0.1mm of nominal thickness, most passes through afterwards
It crosses irradiation and promotes outer jacket performance, structure design makes cable have excellent mechanical performance, cold tolerance, aging
It can wait and meet low smoke and non-toxic performance.
The utility model creative use octafluorocyclobutane physical foaming technology, in all electronegative gases, only for
The few several nontoxic ozone frees of number influence, and its breakdown strength under uniform electric field is 1.3 times of SF6 gas, octafluoro
Although cyclobutane has stronger insulation performance, have the shortcomings that condensing temperature is relatively high, boiling point is -8 DEG C, is easier to liquid
Change, but it can a certain proportion of condensing temperature be lower and there is no the N that carbon decomposes by adding2、CO2And CF4Equal buffer gas
It is resolved.Production product foaming mesh diameter is reduced to 0.006-0.014mm by 0.01-0.02mm, in identical foaming mesh
Under conditions of density, foaming layer insulation thickness can reduce 15%-20%, therefore under identical total insulation thickness, it is ensured that physical machine
The inside and outside insulation overall thickness of tool performance increases 24-32%, is equivalent to physical mechanical property surplus and increases 24-32%, i.e., identical
Under cable use environment, hence it is evident that extend cable service life.
Above content is only illustrate to examples for clearly illustrating the present invention described in this specification.The utility model
Person of ordinary skill in the field can do various modifications or supplement to described specific embodiment or use similar side
Formula substitution, content without departing from the utility model specification or beyond the scope defined by this claim should all
Belong to the protection scope of the utility model.
Claims (6)
1. a kind of communication cable used for rolling stock, it is characterised in that: include several insulated wire cores and oversheath, several eradication edge
Core is regular twisted, and oversheath is arranged on the outside of the insulated wire cores that several have been twisted, and every insulated wire cores are comprising conductor and absolutely
Edge layer, insulating layer includes inner insulating layer, foaming layer and the external insulation layer being successively arranged in from inside to outside on the outside of conductor, wherein foaming
Layer is octafluorocyclobutane physical blowing layer.
2. a kind of communication cable used for rolling stock described in accordance with the claim 1, it is characterised in that: the conductor is tin plating by more
Soft copper silk carries out regular be made by twisting with 11-16 times of pitch.
3. a kind of communication cable used for rolling stock described in accordance with the claim 1, it is characterised in that: the inner insulating layer and it is outer absolutely
Edge layer is made of polyolefine material, and inner insulating layer, foaming layer and external insulation layer are closely extruded in using three-layer co-extruded equipment and are led
External side.
4. a kind of communication cable used for rolling stock described in accordance with the claim 1, it is characterised in that: several insulated wire cores
Outside is provided with wrapping layer, and wrapping layer is wrapped using polyester belt or foaming PP belt progress, and wrapped overlapping rate is 20~30%, wrapped
Direction is left-hand.
5. a kind of communication cable used for rolling stock according to claim 4, it is characterised in that: setting on the outside of the wrapping layer
There is composite shielding layer, composite shielding layer includes aluminium foil longitudinal wrap layer and tincopper fuse wire braided armor, and the aluminium foil aluminium of aluminium foil longitudinal wrap layer faces
It is in contact outside with tincopper fuse wire braided armor, the braid angle of tincopper fuse wire braided armor is 30-50 °, and count is greater than 80%.
6. a kind of communication cable used for rolling stock according to claim 5, it is characterised in that: the oversheath is using irradiation
It is crosslinked low cigarette to be made without rate polyolefine material, be coated on the outside of composite shielding layer using crowded pipe mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140048.9U CN209312481U (en) | 2018-12-20 | 2018-12-20 | A kind of communication cable used for rolling stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140048.9U CN209312481U (en) | 2018-12-20 | 2018-12-20 | A kind of communication cable used for rolling stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209312481U true CN209312481U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822140048.9U Active CN209312481U (en) | 2018-12-20 | 2018-12-20 | A kind of communication cable used for rolling stock |
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| CN (1) | CN209312481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686491A (en) * | 2018-12-20 | 2019-04-26 | 中天科技装备电缆有限公司 | A kind of communication cable used for rolling stock and its manufacturing method |
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2018
- 2018-12-20 CN CN201822140048.9U patent/CN209312481U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686491A (en) * | 2018-12-20 | 2019-04-26 | 中天科技装备电缆有限公司 | A kind of communication cable used for rolling stock and its manufacturing method |
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