CN103854802A - Low-smoke zero-halogen mouse and ant prevention railway digital signal cable - Google Patents
Low-smoke zero-halogen mouse and ant prevention railway digital signal cable Download PDFInfo
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- CN103854802A CN103854802A CN201410062419.XA CN201410062419A CN103854802A CN 103854802 A CN103854802 A CN 103854802A CN 201410062419 A CN201410062419 A CN 201410062419A CN 103854802 A CN103854802 A CN 103854802A
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Abstract
The invention discloses a low-smoke zero-halogen mouse and ant prevention digital signal cable which comprises a plurality of core wires. Each core wire comprises four conductors twisted through a star shape, and single-face aluminum plastic composite belts covering all the conductors. Each conductor comprises a wire located in the middle, a low-density polyethylene inner leather layer, a physical foaming polyolefin foaming layer and a polypropylene outer leather layer, wherein the low-density polyethylene inner leather layer, the physical foaming polyolefin foaming layer and the polypropylene outer leather layer cover the wire. The core wires are symmetrically arranged to form a cable core, a lapped covering layer covers the cable core, a heat insulation layer covers the lapped covering layer, a first armor layer covers the heat insulation layer, an isolating layer covers the first armor layer, a second armor layer covers the isolation layer, a non-woven fabric layer covers the second armor layer, and a low-smoke zero-halogen physical mouse and ant prevention function protection sleeve layer covers the non-woven fabric layer. The low-smoke zero-halogen mouse and ant prevention digital signal cable is good in damp and corrosion prevention effect and shielding effect, good in tensile and bending-prevention performance, capable of retarding inflaming, little in smoke, friendly to the environment and capable of achieving the safe and environmental-friendly function of preventing mice and ants on people and livestock.
Description
Technical field
The present invention relates to cable technology field, relate in particular to a kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable.
Background technology
For a long time, due to the deficiency existing by material and structure aspects, make cable in railway systems, use its tensile strength, bending resistance to be difficult to adapt to instructions for use, evil idea in damaged condition causes communication failure.
The both direction of current railway locomotive development, the one, passenger traffic adopts high speed motor car, and the 2nd, shipping adopts the heavy traction of the marshalling of growing up.High speed motor car and heavy traction are had higher requirement to fail safe and comfortableness, in existing internal screening railway digital signal cable production process, what the anti-interference railway digital signal cable of common railway low smoke and zero halogen adopted is the anti-interference railway digital signal cable of plastic sheath low smoke and zero halogen or the anti-interference railway digital signal cable of composite sheath low smoke and zero halogen, run into interference when more serious, can cause the distortion of signal transmission., in the common lowered in field environment of railway digital signal cable, use, mouse ant bites and destroys is the one of the main reasons of harm cable meanwhile, and consequent accident causes huge economic loss.For this reason, develop a kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable, have good rat-and-ant proof function, can ensure the high efficiency of transmission of digital signal, protection cable is not bitten by mouse ant, and environmentally safe simultaneously, to person poultry harmless.
Summary of the invention
In order to solve the technical problem existing in background technology, the present invention proposes a kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable, its moisture-proof anticorrosive, shield effectiveness are good, and low smoke and zero halogen when burning is realized the rat-and-ant proof performance to person poultry safety, environmental protection.
A kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable that the present invention proposes, comprises multiple heart yearns; Each heart yearn comprises that four through the conductor of star twisting with at the outside coated one side aluminium-plastic tape of all four conductors, the plastic layer of one side aluminium-plastic tape towards outside, aluminum metal layer is towards interior, and each conductor comprises the wire that is positioned at middle part and low density polyethylene (LDPE) endodermis, physical blowing polyalkene foaming layer and the polypropylene exodermis that is coated on wire outside; Multiple heart yearns are arranged symmetrically with into cable core, at the outside coated lapping layer of described cable core, at the outside coated thermal insulation layer of lapping layer, at outside coated the first armour of thermal insulation layer, the outside coated separator of the first armour, at outside coated the second armour of separator, in the coated nonwoven layer in the outside of the second armour, at the outside coated low smoke and zero halogen physical rat-and-ant proof function restrictive coating of nonwoven layer, described the first armour and described the second armour all adopt the form of the vertical bag of steel band, and the steel band of described the first armour and described the second armour is staggered puts up.
Preferably, described physical rat-and-ant proof function restrictive coating adopts low-smoke halide-free fireproof composite polyolefine material, is wherein evenly distributed with capsaicin nano-capsule.
Preferably, described thermal insulation layer adopts fiberglass braided band or Mica tape to form.
Preferably, described separator adopts the polyester layer of the wrapped formation of polyester belt, and thickness is 0.5-1.5mm.
Preferably, described wire adopts copper core or tin-coated copper core.
In the present invention, the insulating barrier of the conductor in heart yearn adopts skin-bubble-Pi physical blowing polyolefin insulation layer, makes that cable attenuation is little, diameter is little in the situation that electric capacity is equal, cost is low, moistureproof oil resistance is good; By four conductor star twistings, make two pairs of conductors respectively in symmetric position, form a stable unit quad, can, not by external equipment, reduce to greatest extent cross-talk; Heart yearn is symmetrical arranged in cable, strengthens mutual interference between heart yearn; At the outside coated one side aluminium-plastic tape of four conductors through star twisting, its aluminum metal layer plays the effect of internal shield, and plastic layer protection conductor, plays the effect of moisture-proof anticorrosive erosion; Adopt the vertical bag of double-deck steel band armour, strengthen the mechanical performance of cable, protection cable is not subject to the mouse ant destruction that bites; And between double-deck steel band armour, separator is set, plays the effect of buffering, eliminate because of external force or the caused deformation effect of strain, and make double-deck steel band armour protective better; In addition, staggered the putting up of the steel band of double armor layer indulged bag, made up the steel band gap that may occur in the vertical packet procedures of individual layer steel band, strengthen the effect of electromagnetic radiation shielding, and with together with the aluminum metal layer of one side aluminium-plastic tape, on electromagnetic wave shielding, playing complementation, shield effectiveness will be better; The wrapped double-deck steel band armour of nonwoven layer, has eliminated the thickness difference of double-deck steel band lap-joint, makes cable core rounding more; Low smoke and zero halogen cross-linked polyolefin sheath layer protection metal armouring layer, and there is fire-retardant effect, the nontoxic low cigarette of gas of emitting when burning.
In preferred version of the present invention, physical rat-and-ant proof function restrictive coating adopts low-smoke halide-free fireproof composite polyolefine material, wherein be evenly distributed with capsaicin nano-capsule, use capsaicin nano-capsule that it is more evenly distributed in sheath, utilize smell to prevent that mouse ant from biting, realize the rat-and-ant proof function to person poultry safety and environmental protection, low smoke and zero halogen when its burning simultaneously, environmental sound; The polyester layer that the fiberglass braided band that thermal insulation layer adopts or mica tape and separator adopt is heat-resisting non-combustion-supporting material, further ensures cable fail safe in use.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable of proposing of the present invention.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable of proposing of the present invention.
With reference to Fig. 1, a kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable that the present invention proposes, comprises four heart yearns.
In each heart yearn, comprise the plastic-aluminum combined layer 2 of four conductors 1 and one side, conductor 1 comprises the copper conductor 11 in the middle of being positioned at.At the outside coated low density polyethylene (LDPE) endodermises 12 of copper conductor 11, physical blowing polyalkene foaming layer 13, polypropylene exodermis 14, the insulating barrier of this seed coat-bubble-skin structure makes that cable attenuation is little, diameter is little in the situation that electric capacity is equal, cost is low, moistureproof oil resistance is good.
By four conductor 1 star twistings, make two pairs of conductors 1 respectively in symmetric position, form a stable unit quad, reduce to greatest extent cross-talk.At the plastic-aluminum combined layer 2 of the outside coated one side of all four conductors 1; the plastic layer of the plastic-aluminum combined layer 2 of one side tightens together conductor 1 towards interior; its plastic layer protection skin-bubble-Pi physical blowing polyolefin insulation layer; play the effect of moisture-proof anticorrosive erosion; aluminum metal layer plays the effect of internal shield, is each heart yearn shielding electromagnetic wave and interference.
By four conductor 1 star twistings, make two pairs of conductors 1 respectively in symmetric position, form a stable unit quad, reduce to greatest extent cross-talk.At the outside coated one side aluminium-plastic tape 2 of all four conductors 1; the plastic layer of one side aluminium-plastic tape 2 tightens together four conductors 1 towards interior; plastic layer protection skin-bubble-Pi physical blowing polyolefin insulation layer; play the effect of moisture-proof anticorrosive erosion; aluminum metal layer plays the effect of sub-shield, is separately each heart yearn shielding electromagnetic wave and interference.
Four heart yearns are arranged symmetrically with to formation cable core, are tightly strapped in together with lapping layer 3 in cable core outside.Four heart yearns are arranged symmetrically with in cable, strengthen the anti-electromagnetic interference between heart yearn.The outside coated thermal insulation layers 4 that adopt glass fiber tapes to make of lapping layer 3, at outside coated the first steel bands vertical bag armours 5 of thermal insulation layer 4 and the vertical bag of the second steel band armour 7, and the steel band of double armor layer is staggered puts up.Between the first steel-tape armouring layer 5 and the second steel-tape armouring layer 7, be provided with the polyester layer 6 that thickness is 1mm, play the effect of buffering.In the outside wrapped nonwoven layer 8 of nonwoven fabric belts that adopts of the second steel-tape armouring layer 7, make the stabilized structure of the vertical bag of the second steel band armour 7.
At the outside coated physical rat-and-ant proof function restrictive coating 9 of nonwoven layer 8, it protects double-deck steel band armour moisture-proof anticorrosive, and ensures mechanical strength and the resistance to wear of cable.In addition, this unreasonable type rat-and-ant proof function restrictive coating 9 adopts low-smoke halide-free fireproof composite polyolefine material, is wherein evenly distributed with capsaicin nano-capsule.
In the time that cable uses in Railway Environment, physical rat-and-ant proof restrictive coating 9, utilizes its penetrating odor to prevent the mouse ant cable that bites, and realizes the rat-and-ant proof function to person poultry safety and environmental protection.And, adopt the armour of the vertical packet form of double-deck steel band, further protect cable not to be subject to the mouse ant destruction that bites.In addition, staggered the putting up of steel band of double armor layer, make up the steel band gap that may occur in the vertical packet procedures of individual layer steel band, strengthen the effect of electromagnetic radiation shielding, and the steel band that double armor layer adopts and the aluminum metal layer of one side aluminium-plastic tape 2, on electromagnetic wave shielding, play complementation, shield effectiveness is better.
On the construction of cable, the thermal insulation layer 4 that adopts glass fiber tape to make when strengthening the mechanical strength of cable, can use for a long time cable and can not be affected, thereby having ensured the stable of cable operation under hot environment, has extended the life-span of cable.Between the first steel-tape armouring layer and the second steel-tape armouring layer, polyester layer 6 is set, makes up the mass defect of steel-tape armouring layer, eliminate because of external force or the caused deformation effect of strain, and make double-deck steel band armour protective better.Nonwoven layer 8 is wrapped double-deck steel band armour from outside, the vertical pack arrangement of not only firm steel band but also cushion external force, and eliminated the thickness difference of double-deck steel band lap-joint, make cable core rounding more.
Preferably, physical rat-and-ant proof restrictive coating 9 employing low-smoke halide-free fireproof composite polyolefine materials, wherein be evenly distributed with capsaicin nano-capsule, it comprises following component by mass fraction: 60-80 part polyolefin, 30-45 part EVA, 20-35 part aluminium hydroxide, 20-35 part magnesium hydroxide, 6-10 part PE fire retardant, 2-4 part antioxidant, 2-4 part paraffin, 0.8-3 part zinc oxide, 0.4-2 part silane coupler, 0.2-1 part capsaicin nano-capsule; Particularly, 80 parts of polyolefin, 30 parts of EVA, 30 parts of aluminium hydroxides, 30 parts of magnesium hydroxides, 10 parts of PE fire retardants, 3 parts of antioxidant, 3 parts of paraffin, 2 parts of zinc oxide, 1 part of silane coupler, 108 parts of capsaicin nano-capsules.The sheath that this material is made, wherein capsaicin nano-capsule distributes more evenly in sheath material, has nontoxic, efficient, lasting premium properties, and its fire resistance is high, low smoke and zero halogen when burning, environmental sound.
According to the low smoke and zero halogen rat-and-ant proof railway digital signal cable of the present embodiment, after testing, the insulation resistance >=10000M Ω km at 20 DEG C under 500V DC condition; Other conductor is connect to shielding to each conductor and metallic sheath capacitive coupling coefficient is 0.8KHz～1.0kHzpF/km; Mean value≤81 of K1, maximum :≤330; Under 150kHz between loop in near-end crosstalk attenuation group >=and 51[51] dB/1000m, between group >=and 55[65] dB/1000m; Smoke density >=80%; PH value >=7.3; Conductivity≤10 μ S/mm.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. a low smoke and zero halogen rat-and-ant proof railway digital signal cable, is characterized in that, comprises multiple heart yearns, each heart yearn comprises four conductors through star twisting (1) and at the outside coated one side aluminium-plastic tape (2) of all four conductors (1), the plastic layer of one side aluminium-plastic tape (2) towards outside, aluminum metal layer is towards interior, and each conductor (1) comprises the low density polyethylene (LDPE) endodermis (12), physical blowing polyalkene foaming layer (13) and the polypropylene exodermis (14) that are positioned at the wire (11) at middle part and are coated on wire (11) outside, multiple heart yearns are arranged symmetrically with into cable core, at the outside coated lapping layer (3) of described cable core, at the outside coated thermal insulation layer (4) of lapping layer (3), at outside coated the first armour (5) of thermal insulation layer (4), the outside coated separator (6) of the first armour (5), at outside coated the second armour (7) of separator (6), in the coated nonwoven layer (8) in the outside of the second armour (7), at the outside coated low smoke and zero halogen physical rat-and-ant proof function restrictive coating (9) of nonwoven layer (8), described the first armour (5) and described the second armour (7) all adopt the form of the vertical bag of steel band, and the steel band of described the first armour (5) and described the second armour (7) is staggered to be put up.
2. low smoke and zero halogen rat-and-ant proof railway digital signal cable according to claim 1, is characterized in that, described physical rat-and-ant proof function restrictive coating (9) adopts low-smoke halide-free fireproof composite polyolefine material, is wherein evenly distributed with capsaicin nano-capsule.
3. low smoke and zero halogen rat-and-ant proof railway digital signal cable according to claim 1, is characterized in that, described thermal insulation layer (4) adopts fiberglass braided band or Mica tape to form.
4. low smoke and zero halogen rat-and-ant proof railway digital signal cable according to claim 1, is characterized in that, described separator (6) adopts the polyester layer of the wrapped formation of polyester belt, and thickness is 0.5-1.5mm.
5. low smoke and zero halogen rat-and-ant proof railway digital signal cable according to claim 1, is characterized in that, described wire (11) adopts copper core or tin-coated copper core.
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| CN201410062419.XA CN103854802B (en) | 2014-02-24 | 2014-02-24 | A kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable |
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| CN201410062419.XA CN103854802B (en) | 2014-02-24 | 2014-02-24 | A kind of low smoke and zero halogen rat-and-ant proof railway digital signal cable |
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| CN103854802B CN103854802B (en) | 2016-10-05 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104200889A (en) * | 2014-09-03 | 2014-12-10 | 太仓苏晟电气技术科技有限公司 | High-effect rat-proof and termite-proof electric wire and cable and preparation method thereof |
| CN106057315A (en) * | 2016-08-25 | 2016-10-26 | 周佩龙 | Cable having better protection effect |
| CN106098184A (en) * | 2016-07-07 | 2016-11-09 | 李保集 | A kind of high reliability cable for rail transit vehicles |
| CN106409397A (en) * | 2016-11-11 | 2017-02-15 | 北京亨通斯博通讯科技有限公司 | Flame-retardant damp-proof abrasion-resistant anti-interference digital cable for outdoor use |
| CN106496775A (en) * | 2016-10-11 | 2017-03-15 | 佛山市飞时达新材料科技有限公司 | A kind of manufacture method of the PP cable jacket materials of termite-resistant rodent-resistant |
| CN107593704A (en) * | 2017-09-15 | 2018-01-19 | 南通香佳纺织科技有限公司 | A kind of steamer cable capsaicine Ratproof agent and preparation method thereof |
| CN107978392A (en) * | 2017-11-20 | 2018-05-01 | 浙江工业大学之江学院 | A kind of anticorrosion abrasion resistant fire blocking cable |
| CN109181052A (en) * | 2018-07-18 | 2019-01-11 | 山东华能线缆有限公司 | A kind of slow-release termite-resistant rodent-resistant cable jacket material |
| CN114334259A (en) * | 2022-01-25 | 2022-04-12 | 安徽鸿海电缆有限公司 | Environment-friendly rat-proof and termite-proof steel-tape-armored flame-retardant power cable |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104200889A (en) * | 2014-09-03 | 2014-12-10 | 太仓苏晟电气技术科技有限公司 | High-effect rat-proof and termite-proof electric wire and cable and preparation method thereof |
| CN106098184A (en) * | 2016-07-07 | 2016-11-09 | 李保集 | A kind of high reliability cable for rail transit vehicles |
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| CN106496775A (en) * | 2016-10-11 | 2017-03-15 | 佛山市飞时达新材料科技有限公司 | A kind of manufacture method of the PP cable jacket materials of termite-resistant rodent-resistant |
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| CN107978392A (en) * | 2017-11-20 | 2018-05-01 | 浙江工业大学之江学院 | A kind of anticorrosion abrasion resistant fire blocking cable |
| CN109181052A (en) * | 2018-07-18 | 2019-01-11 | 山东华能线缆有限公司 | A kind of slow-release termite-resistant rodent-resistant cable jacket material |
| CN109181052B (en) * | 2018-07-18 | 2021-03-23 | 山东华能线缆有限公司 | Slow-release type rat-proof and termite-proof cable sheath material |
| CN114334259A (en) * | 2022-01-25 | 2022-04-12 | 安徽鸿海电缆有限公司 | Environment-friendly rat-proof and termite-proof steel-tape-armored flame-retardant power cable |
| CN114334259B (en) * | 2022-01-25 | 2023-09-19 | 安徽鸿海电缆有限公司 | Environment-friendly rat and termite prevention steel tape armored flame-retardant power cable |
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Denomination of invention: Low-smoke zero-halogen mouse and ant prevention railway digital signal cable Effective date of registration: 20181229 Granted publication date: 20161005 Pledgee: Anhui inaction rural commercial bank Limited by Share Ltd Pledgor: Anhui Huayuan Cable Group Co., Ltd. Registration number: 2018340000789 |
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Denomination of invention: Low-smoke zero-halogen mouse and ant prevention railway digital signal cable Effective date of registration: 20200527 Granted publication date: 20161005 Pledgee: Anhui inaction rural commercial bank Limited by Share Ltd. Pledgor: ANHUI HUAYUAN CABLE GROUP Co.,Ltd. Registration number: Y2020980002545 |
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