CN103606398A - Cable for urban light rail subway service - Google Patents
Cable for urban light rail subway service Download PDFInfo
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- CN103606398A CN103606398A CN201310620388.0A CN201310620388A CN103606398A CN 103606398 A CN103606398 A CN 103606398A CN 201310620388 A CN201310620388 A CN 201310620388A CN 103606398 A CN103606398 A CN 103606398A
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Abstract
The invention discloses a cable for urban light rail subway service. The cable comprises a cable core, wherein the cable core is formed by twisting a direct-current power cable, a control cable and an alkali-free glass fiber rope, a band with high resistance to flames and water is wrapped on the cable core, and an inner sheath layer and an outer sheath layer are sequentially wrapped on the band with high resistance to flames and water in an extruded mode; the direct-current power cable is composed of a conductor, a non-woven fabric band, an insulating layer, a band with high resistance to water, a copper band and a band with high resistance to flames, and the non-woven fabric band, the insulating layer, the band with high resistance to water, the copper band and the band with high resistance to flames are sequentially wrapped on the conductor from inside to outside; the control cable is composed of a cable core body, a band with high resistance to water, a copper band and a band with high resistance to flames, the cable core body is formed by twisting a plurality of insulating wire cores and an alkali-free glass fiber rope, and the band with high resistance to water, the copper band and the band with high resistance to flames are sequentially wrapped on the cable core body. The cable achieves high insulating performance, the A level of flame retardance, low smoke, zero halogen, waterproofing, rat and ant prevention, ultraviolet prevention, good electric-field disturbance resistance, and good bending resistance, and achieves power-transmission, control, signal, protecting and measuring functions simultaneously.
Description
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Technical field
the present invention relates to electric wire field, specifically a kind of urban light rail subway service cable.
Background technology
Urban track traffic is the major measure that traffic environment is improved in current international big city, due to the particularity of track traffic, high to the fail safe of electric power system, reliability requirement.And subway, light rail cable lay circumstance complication, prior art products often can not meet the various harsh requirement of laying simultaneously.
Urban light rail subway mostly is densely populated underground by the environment for use of cable, once breaking out of fire, the environment of underground sealed brings very large difficulty to personnel escape and fire-fighting work.Therefore fire resistance is had relatively high expectations, fire resistance will meet the requirement of A level in GB/T18380.3.Meanwhile, during burning, the release of smog and toxic gas can hinder firemanic carrying out, and sour gas all can damage people and equipment, and during therefore to burning, the burst size of smog and toxic gas also has higher requirement.
Urban light rail subway is the effect due to environment and meteorologic factor with cable, likely the long period is laid under moist environment cable, hydrone likely immerses cable, invade cable inside, be insulated absorption and absorb, cause the decline of electric property, can cause oxidation, the corrosion of conductor, not only affect the electrical property of cable, and abnormal broken line accident can occur when serious, cable will have water-proof function.
Urban light rail subway is laid in underground for a long time with cable, be easily subject to the attack of toy (as muroid, ant class), affects the performance of cable, and cable should have termite-resistant rodent-resistant function.
If urban light rail subway is not to use in subway with cable cable, but be laid in elevated railway, so just may stand for a long time the test of solar radiation and various meteorological conditions, the sheath of cable is for a long time by solar radiation, easily there is color fading, the mechanical and physical performance phenomenons such as cracking that decline even, cable should have anti-ultraviolet function.
Urban light rail subway cable laying limited space, one side requires direct current cables lightweight, flexible, radius of turn is little.On the other hand, the cable type that lays in roughing-in is many, quantity is many, need the outside diameter of cable little, easily lay.
Urban light rail subway is except a large amount of power cable of needs, also need to use a large amount of control, signal, protection and measure cable, prior art is owing to considering the factor of electric interfering field, often power cable and control, signal, protection and measurement cable are processed separately, are laid respectively, this not only brings difficulty to construction, has also increased use and construction cost; And because the wire core diameter of control, signal, protection and measurement cable is less, tensile strength is lower, easily abrades or break in laid processes.
Summary of the invention
The object of this invention is to provide and a kind ofly have that higher insulation property, fire-retardant A level, low smoke and zero halogen, waterproof, termite-resistant rodent-resistant, antiultraviolet, anti-electric field are disturbed, good bending property, and play the subway service cable of electric energy transmitting and control, signal, protection and measurement simultaneously.
A kind of urban light rail subway service cable of the present invention, comprise cable core, its cable core is by insulation DC electric cable, control cables and alkali-free glass wool rope is stranded forms, and wrapped high flame retardant waterstop outside cable core, extrudes inner restrictive coating and external sheath layer outward successively at high flame retardant waterstop.
Further improve, described insulation DC electric cable by conductor and successively from inside to outside wrapped nonwoven fabric belts, insulating barrier, high water resistant band, copper strips, high flame retardant band outside conductor form.
Further improve, the cable core that described control cables is twisted into by many insulated wire cores and alkali-free glass wool rope and successively wrapped high water resistant band, copper strips, high flame retardant band outside cable core form.
Further improve, described insulated wire cores is formed by conductor and the insulation being extruded in outside conductor.
Further improve, described high flame retardant waterstop is low smoke and zero halogen that surface impregnation has the low-smoke bittern-free highly fire-proof band of inorganic combustion inhibitor to be also the impregnated with water-proofing powder simultaneously high flame retardant band that blocks water.
Further improve, described inner restrictive coating is the low-smoke bittern-free highly fire-proof oxygen barrier sheath that is filled with inorganic combustion inhibitor.
Further improve, described external sheath layer is low-smoke halogen-free flame-retardant sheath material.
Further improve, described copper strips is that thickness is the brass band of 0.12mm again, and employing Double-layer gap is wrapped or individual layer is overlapping wrapped.Preferentially select individual layer overlapping wrapped, the rate of putting up between copper strips is 15% (nominal value) of copper strips width, and the minimum rate of putting up should be not less than 5%.
Beneficial effect of the present invention is:
(1) have higher insulation property, compare without (low) halogen flame-proof cross-linking polyolefin insulation with the low cigarette of available technology adopting, the electricity function indexs such as the insulation resistance constant of cable and specific insulation can not reduce, and have kept higher insulation property.
(2) fire-retardant A level, the combining structure of multilayer high flame retardant band, low-smoke bittern-free highly fire-proof oxygen barrier sheath, alkali-free glass wool rope, makes cable reach the requirement of fire-retardant A level, and in category-A burning test, jacket surface carbonization partial-length can meet national standard requirement.High flame retardant band, high flame retardant oxygen barrier sheath, its oxygen index is greater than 45, and main component comprises a large amount of inorganic combustion inhibitors, and igniting of cable is the process of heat release after a first heat absorption, cable needs to absorb a large amount of heats before igniting makes the material in cable reach flash-point, could burn.High flame retardant band, high flame retardant oxygen barrier sheath are owing to there being a large amount of non-flammable inorganic hydrogen aluminium oxide, magnesium hydroxide etc., the thermal capacity of cable is increased and thermal-conduction resistance reduces, retardation the raising of oversheath intensification under flame, in addition, when aluminium hydroxide temperature is increased to 250 ℃, there is bleed reaction, in process, need to absorb amount of heat and discharge a large amount of steam simultaneously, and steam can dilute imflammable gas, effectively suppress the appearance of material flash-point, contribute to stop the burning of cable.The crust of high flame retardant band, high flame retardant inner sheath is also fine, after flame combustion, separate out aluminium oxide duricrust that water transform Cheng Burong do not fire and be wrapped in the outer flame that stops of insulation and enter in insulation, also completely cut off contacting of insulation and extraneous oxygen, make the intensity of a fire controlled.Alkali-free glass wool rope is by alkali-free glass gauze Shu Hecheng thigh stranded forming again, fire-retardant, fire-resistant, has higher tensile strength simultaneously, higher electrical insulation capability, and chemical stability and thermal endurance preferably, and moisture absorption is little.
(3) low smoke and zero halogen, inner restrictive coating, external sheath layer, high flame retardant band are all low smoke and zero halogen materials.Light transmittance, halogen acid gas burst size, pH value, conductivity all meet standard-required and have very large surplus, when cable material and cable smoke density test burn, light transmittance is less than 60%, halogen acid gas burst size while taking from the material combustion of cable is less than 5mg/g, the water-soluble pH value that discharges gas while taking from the material combustion of cable is greater than 4.3, and the conductivity of the aqueous solution is less than 10 μ s/mm.
(4) waterproof, duplex sheath can increase radially water proofing property, and the low smoke and zero halogen high flame retardant band that blocks water can play resistance effect, fills water-proofing powder in conductor, and alkali-free glass wool rope moisture absorption is little, can play longitudinal waterproof action.
(5) termite-resistant rodent-resistant, the relative red copper hardness of brass is larger, has enough hardness to stand the attack of mouse, termite.In sheath material, add capsicim, adopt capsicim as anti-termite agent, can make oral mucosa and the olfactory nerves of muroid animal be subject to intense stimulus and detest and reject to chew and cut, simultaneously can hit and kill termite again, there is difunctional nontoxic, environmental protection, nuisanceless, effective component content is high, addition is little, the term of validity is long.
(6) antiultraviolet, oversheath adopts the material of ultraviolet resistance or in sheath material, adds the auxiliary agents such as UV resistant absorbent to improve the performance of material, can stand for a long time the test of solar radiation and various meteorological conditions, the sheath of cable is for a long time by solar radiation, there will not be color fading, the mechanical and physical performance phenomenons such as cracking that decline even.
(7) anti-electric field disturbs, and wrapped copper strips in direct current power cable core and control cable core, can play shielding action, and independent mutually, can make direct current cables and control cables synchronous working but non-interference electric field.
(8) good bending property, conductor adopts 5 class conductors more more soft than 2 class conductors, and insulation adopts second the third insulation more more soft than crosslinked polyetylene insulated, good bending property, bending radius is very little and tolerate vibrations, can be used in radius of turn and require strict place.
(9) play electric energy transmitting and control, signal, protection and measurement effect, direct current power cable core transmits and distributes electric energy in power circuit simultaneously.Control cable core transmission of signal or control operation between control centre and system, or for the protection of, measure.Direct current power cable core and control cable core are combined with each other, and have not only saved material, cost of manufacture, and can construct simultaneously, reduce construction times and operating expenses.Also avoided because of cable laying narrow space, during construction, easily damaged the problem of tiny control cables core.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of control cables in the present invention.
Embodiment
As shown in Figure 1-2, a kind of urban light rail subway service cable of the present invention, comprise cable core, its cable core is formed with alkali-free glass wool rope 3 is stranded by insulation DC electric cable 1, control cables 2, wrapped high flame retardant waterstop 4 outside cable core extrudes successively inner restrictive coating 5 and external sheath layer 6 outside high flame retardant waterstop 4; Described insulation DC electric cable 1 by conductor 1-1 and successively from inside to outside wrapped nonwoven fabric belts 1-2, insulating barrier 1-3, high water resistant band 1-4, copper strips 1-5, high flame retardant band 1-6 outside conductor 1-1 form; The cable core that described control cables 2 is twisted into by many insulated wire cores and alkali-free glass wool rope 2-3 and successively wrapped high water resistant band 2-4, copper strips 2-5, high flame retardant band 2-6 outside cable core form.
In the present invention:
Described conductor is the naked annealed copper conductor that meets GB/T 3956-2008 or the metal cladding annealed copper conductor that cable is conventional, the hard circular copper wire of multiply that comprises compacting pressing forms the 5 class conductors that 2 class conductors or the soft circular copper wire of non-multiply of pressing form etc., preferentially selects wire core diameter to be less than the zinc-plated 5 class conductors of 0.5mm.
Described insulation is crosslinked polyethylene or ethylene-propylene rubber, preferentially selects ethylene-propylene rubber.
Described copper strips is the brass band that meets H62 in GB2060 or H65, and minimal thickness is 0.12mm, can take that Double-layer gap is wrapped or individual layer is overlapping wrapped.Preferentially select individual layer overlapping wrapped, the rate of putting up between copper strips is 15% (nominal value) of copper strips width, and the minimum rate of putting up should be not less than 5%.
Described high flame retardant band is the low-smoke bittern-free highly fire-proof band that surface impregnation has a large amount of inorganic combustion inhibitors, preferentially selects the low smoke and zero halogen that is simultaneously the impregnated with water-proofing powder high flame retardant band that blocks water.
Described inner restrictive coating is the low-smoke bittern-free highly fire-proof oxygen barrier sheath that is filled with a large amount of inorganic combustion inhibitors.
Described external sheath layer is low-smoke halogen-free flame-retardant sheath material, preferentially select low-smoke halide-free fireproof composite polyolefine material, preferentially select with the material of ultraviolet resistance or in sheath material, add the auxiliary agents such as UV resistant absorbent to improve the performance of material, preferentially selecting and in sheath material, add capsicim as anti-termite agent.
The invention provides a kind of urban light rail subway service cable; the above is only preferred implementation method of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (8)
1. a urban light rail subway service cable, it is characterized in that: comprise cable core, its cable core is by insulation DC electric cable (1), control cables (2) and stranded the forming of alkali-free glass wool rope (3), wrapped high flame retardant waterstop (4) outside cable core extrudes successively inner restrictive coating (5) and external sheath layer (6) outside high flame retardant waterstop (4).
2. urban light rail subway service cable according to claim 1, it is characterized in that, described insulation DC electric cable (1) by conductor (1-1) and successively from inside to outside wrapped nonwoven fabric belts (1-2), insulating barrier (1-3), high water resistant band (1-4), copper strips (1-5), high flame retardant band (1-6) outside conductor (1-1) form.
3. urban light rail subway service cable according to claim 1, it is characterized in that, the cable core that described control cables (2) is twisted into by many insulated wire cores and alkali-free glass wool rope (2-3) and successively wrapped high water resistant band (2-4), copper strips (2-5), high flame retardant band (2-6) outside cable core form.
4. urban light rail subway service cable according to claim 3, is characterized in that, described insulated wire cores is by conductor (2-1) and be extruded in the outer insulation (2-2) of conductor (2-1) and form.
5. urban light rail subway service cable according to claim 1, it is characterized in that, the low-smoke bittern-free highly fire-proof band that described high flame retardant waterstop (4) has an inorganic combustion inhibitor for surface impregnation is simultaneously also for being impregnated with the low smoke and zero halogen of the water-proofing powder high flame retardant band that blocks water.
6. urban light rail subway service cable according to claim 1, is characterized in that, described inner restrictive coating (5) is for being filled with the low-smoke bittern-free highly fire-proof oxygen barrier sheath of inorganic combustion inhibitor.
7. urban light rail subway service cable according to claim 1, is characterized in that, described external sheath layer (6) is low-smoke halogen-free flame-retardant sheath material.
8. according to the urban light rail subway service cable described in claim 2,3, it is characterized in that, the brass band that described copper strips (1-5), (2-5) they are 0.12mm for thickness, and employing Double-layer gap is wrapped or individual layer is overlapping wrapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310620388.0A CN103606398A (en) | 2013-11-29 | 2013-11-29 | Cable for urban light rail subway service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310620388.0A CN103606398A (en) | 2013-11-29 | 2013-11-29 | Cable for urban light rail subway service |
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| Publication Number | Publication Date |
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| CN103606398A true CN103606398A (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310620388.0A Pending CN103606398A (en) | 2013-11-29 | 2013-11-29 | Cable for urban light rail subway service |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304177A (en) * | 2015-12-07 | 2016-02-03 | 无锡江南电缆有限公司 | Power control composite braided shield flexible cable for urban railway system |
| CN105304170A (en) * | 2015-12-07 | 2016-02-03 | 无锡江南电缆有限公司 | Dynamic control composite flexible cable for city track traffic |
| CN105336424A (en) * | 2015-12-08 | 2016-02-17 | 无锡江南电缆有限公司 | Power-control composite integrated water-blocking cable for urban rail transit |
| CN105336430A (en) * | 2015-11-30 | 2016-02-17 | 无锡江南电缆有限公司 | Animal-control composite cable for urban railway system |
| CN105374420A (en) * | 2015-12-08 | 2016-03-02 | 无锡江南电缆有限公司 | Power control composite integrated waterproof flexible cable for city track traffic |
| CN105374458A (en) * | 2015-12-07 | 2016-03-02 | 无锡江南电缆有限公司 | Halogen-free low-smoke flame-retardant fireproof copper wire shielding power control composite cable for city track traffic |
| CN105427933A (en) * | 2015-12-08 | 2016-03-23 | 无锡江南电缆有限公司 | Copper wire-shielded power-control composite integrated water-blocking cable for urban rail transit |
| CN111048255A (en) * | 2019-12-04 | 2020-04-21 | 安徽华通电缆集团有限公司 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
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| CN203706701U (en) * | 2013-11-29 | 2014-07-09 | 无锡江南电缆有限公司 | High flame-retardant anti-interference cable for subway service |
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2013
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| DE19839900A1 (en) * | 1998-09-02 | 2000-03-23 | Kaiser Kwo Kabel Telekom Gmbh | Cable for telecommunication and safety systems with special application conditions especially for systems subject to vibration, such as cables laid in vicinity of rail track region with cable cores |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336430A (en) * | 2015-11-30 | 2016-02-17 | 无锡江南电缆有限公司 | Animal-control composite cable for urban railway system |
| CN105304177A (en) * | 2015-12-07 | 2016-02-03 | 无锡江南电缆有限公司 | Power control composite braided shield flexible cable for urban railway system |
| CN105304170A (en) * | 2015-12-07 | 2016-02-03 | 无锡江南电缆有限公司 | Dynamic control composite flexible cable for city track traffic |
| CN105374458A (en) * | 2015-12-07 | 2016-03-02 | 无锡江南电缆有限公司 | Halogen-free low-smoke flame-retardant fireproof copper wire shielding power control composite cable for city track traffic |
| CN105336424A (en) * | 2015-12-08 | 2016-02-17 | 无锡江南电缆有限公司 | Power-control composite integrated water-blocking cable for urban rail transit |
| CN105374420A (en) * | 2015-12-08 | 2016-03-02 | 无锡江南电缆有限公司 | Power control composite integrated waterproof flexible cable for city track traffic |
| CN105427933A (en) * | 2015-12-08 | 2016-03-23 | 无锡江南电缆有限公司 | Copper wire-shielded power-control composite integrated water-blocking cable for urban rail transit |
| CN111048255A (en) * | 2019-12-04 | 2020-04-21 | 安徽华通电缆集团有限公司 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
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Application publication date: 20140226 |