CN105304177A - Power control composite braided shield flexible cable for urban railway system - Google Patents
Power control composite braided shield flexible cable for urban railway system Download PDFInfo
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- CN105304177A CN105304177A CN201510883605.4A CN201510883605A CN105304177A CN 105304177 A CN105304177 A CN 105304177A CN 201510883605 A CN201510883605 A CN 201510883605A CN 105304177 A CN105304177 A CN 105304177A
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Abstract
The invention provides a power control composite braided shield flexible cable for an urban railway system. The power control composite braided shield flexible cable comprises a DC electric power cable core and at least two control cable cores, and is characterized in that the control cable cores are stranded at the outside of the DC electric power cable core concentrically to form a control cable core layer; the DC electric power cable core includes a DC electric power cable conductor, an extruded DC electric power cable insulation layer, a wrapped first flame retardation band, a longitudinally lapped plastic-aluminum composite band, an extruded first inner sheath layer successively from the inside to the outside; and a wrapped second flame retardation band, an extruded second inner sheath layer, a copper wire braided and coated flame-resistant material layer and an extruded outer sheath layer are arranged successively outside the control cable core layer from the inside to the outside. The flexible cable has the advantages of being high in insulating properties, being A-level in flame retardation, being low smoke zero halogen, being waterproof, being ratproof and antproof, being anti ultraviolet, being able to resist disturbance of electric field, being high in flexibility, being high in bending property and being compact in structure, and can simultaneously realize functions for electric energy transmission, control, signal, protection and measurement.
Description
Technical field
Patent of the present invention relates to field of cable technology, specifically, relates generally to the composite braided shielded flexible cable of the dynamic control of a kind of urban track traffic.
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 rigors laid simultaneously; The environment for use of urban light rail subway cable mostly is densely populated underground, once breaking out of fire, the environment of underground sealed brings very large difficulty to personnel escape and fire-fighting work.Therefore require higher to fire resistance, 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, therefore also has higher requirement to the burst size of smog during burning and toxic gas; Urban light rail subway cable is due to the effect of environment and meteorologic factor, cable likely lay in a humidity environment by the long period, hydrone likely immerses cable, invade cable inside, absorbed by insulation absorption, cause the decline of electric property, the oxidation of conductor, corrosion can be caused, not only affect the electrical property of cable, and time serious, abnormal broken line accident can occur, cable will have water-proof function; Urban light rail subway cable is laid in underground for a long time, and be easily subject to the attack of toy (as muroid, ant class), affect the performance of cable, cable should have termite-resistant rodent-resistant function; If urban light rail subway cable cable is not use in subway, but be laid in elevated railway, so just may stand the test of solar radiation and various meteorological condition for a long time, the sheath of cable is for a long time by solar radiation, easily there is color fading, mechanical and physical performance declines the even phenomenon such as cracking, and cable should have anti-ultraviolet function; Urban light rail subway cable laying limited space, requires direct current cables lightweight on the one hand, flexible, radius of turn is little.On the other hand, the cable type laid in roughing-in is many, quantity is many, need the outside diameter of cable little, easily lay; Urban light rail subway is except needing a large amount of power cables, also need 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 measure cable and process separately, lay respectively, this not only brings difficulty to construction, too increases use and construction cost; And due to control, signal, protection and to measure the wire core diameter of cable 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 jamming, flexibility are good, good bending property, compact conformation, and play the composite braided shielded flexible cable of the dynamic control of urban track traffic of electric energy transmitting and control, signal, protection and measurement simultaneously.
A kind of urban track traffic of the present invention composite braided shielded flexible cable of dynamic control, comprises insulation DC electric cable cable core and at least two control conductor.Described control conductor concentric stranding forms control line sandwich layer outward at insulation DC electric cable cable core; Described insulation DC electric cable cable core comprises insulation DC electric cable conductor, the insulation DC electric cable insulation extruded, the first wrapped inhibiting tape from inside to outside successively, indulges the aluminium-plastic tape wrapped, the first inner restrictive coating extruded; Described control line sandwich layer comprises the second wrapped inhibiting tape from inside to outside successively outward, extrudes the second inner restrictive coating, proof copper-wire braided+coating flame retarding material, the external sheath layer that extrudes.
Further improvement, is filled with flame resistant filler rope between described control conductor.
Further improvement, is surrounded with alkali-free glass fibre band outside described control conductor.
Further improvement, described first inhibiting tape, the second inhibiting tape are alkali-free glass fibre band, and described flame resistant filler rope is alkali-free glass wool rope.
Further improvement, the first described inner restrictive coating is polythene inner or low-smoke bittern-free highly fire-proof oxygen barrier sheath.
Further improvement, the second described inner restrictive coating is the low-smoke bittern-free highly fire-proof oxygen barrier sheath being filled with inorganic combustion inhibitor.
Further improvement, described proof copper-wire braided is with coating flame retarding material, and coating fire proofing is Ceramic silicon rubber coating material.
Improve further, described external sheath layer is low-smoke halogen-free flame-retardant sheath material again.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
(1) have higher insulation property, and adopt low cigarette without compared with (low) halogen flame-proof cross-linking polyolefin insulation in prior art, the electricity function indexs such as the insulation resistance constant of cable and specific insulation can not reduce, and maintain higher insulation property.
(2) fire-retardant A level, the combining structure of multi-layer fire-retarded band, low-smoke bittern-free highly fire-proof oxygen barrier sheath, alkali-free glass wool rope, coating silicon rubber, make cable reach the requirement of fire-retardant A level, in category-A burning test, jacket surface carbonized part length can meet national standard requirement.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 oxygen barrier sheath is 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, the raising of oversheath intensification under retardation flame, in addition, when aluminium hydroxide temperature is increased to 250 DEG C, there is bleed reaction, need to absorb amount of heat in process and discharge a large amount of steam simultaneously, and steam can dilute imflammable gas, the appearance of effective suppression material flash-point, contributes to the burning stoping cable.The crust of high flame retardant inner sheath is also fine, and after flame combustion, the aluminium oxide duricrust that precipitation water transform Cheng Burong does not fire is wrapped in the outer flame that stops of insulation and enters in insulation, has also completely cut off the contact of insulation and extraneous oxygen, the intensity of a fire is controlled.Alkali-free glass fibre band, alkali-free glass wool rope form by alkali-free glass gauze Shu Hecheng stock is stranded again, fire-retardant, fire-resistant, have higher tensile strength, higher electrical insulation capability, good chemical stability and thermal endurance, and moisture absorption are little simultaneously.
(3) low smoke, zero halogen, the first inner restrictive coating, the second inner restrictive coating, coating silicon rubber, external sheath layer, multi-layer fire-retarded 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 when taking from the material combustion of cable is less than 5mg/g, the water-soluble pH value discharging gas when 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, the aluminium-plastic tape of duplex sheath, vertical bag can increase radial water proofing property, and alkali-free glass wool rope moisture absorption is little, can play longitudinal waterproof action.
(5) termite-resistant rodent-resistant, capsicim is added in sheath material, adopt capsicim as anti-termite agent, the oral mucosa of murine and olfactory nerves can be made to be subject to intense stimulus and to detest and reject to chew to cut, can hit again simultaneously and kill termite, 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, the test of solar radiation and various meteorological condition can be stood for a long time, the sheath of cable, for a long time by solar radiation, there will not be color fading, mechanical and physical performance to decline the even phenomenon such as cracking.
(7) anti-electric jamming, the vertical aluminium-plastic tape of bag, the copper wire of braiding can play shielding action, can make direct current cables and control cables synchronous working but non-interference electric field.
(8) good, the good bending property of flexibility, conductor adopts 5 class conductors more more soft than 2 class conductors, insulation adopts second third to insulate more more soft than crosslinked polyetylene insulated, braid shielded structure is also more soft than lapping structure, good bending property, bending radius very little and tolerance vibrations, radius of turn can be used in and require strict place.
(9) compact conformation, control conductor and power wire core are concentric structure, and external diameter is little.
(10) 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 the heart and system in the controlling, or for the protection of, measure.Direct current power cable core and control cable core are combined with each other, and not only save material, cost of manufacture, and can construct simultaneously, reduce construction times and operating expenses.It also avoid because of cable laying narrow space, during construction, easily damage the problem of tiny control cables core.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Wherein, 1, control conductor, 2, control conductor insulation, 3, insulation DC electric cable conductor, 4, insulation DC electric cable insulation, the 5, first inhibiting tape, 6, aluminium-plastic tape, 7, the first inner restrictive coating, 8, flame resistant filler rope, the 9, second inhibiting tape, the 10, second inner restrictive coating, 11, proof copper-wire braided and coating flame retarding material, 12, external sheath layer.
Embodiment
The invention provides the composite braided shielded flexible cable of the dynamic control of a kind of urban track traffic, for making object of the present invention, clearly, clearly, and the present invention is described in more detail with reference to accompanying drawing examples for technical scheme and effect.Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the urban track traffic provided by the present invention composite braided shielded flexible cable of dynamic control, comprise insulation DC electric cable cable core and at least two control conductor 1, described control conductor 1 concentric stranding forms control line sandwich layer outward at insulation DC electric cable cable core; Described insulation DC electric cable cable core comprises insulation DC electric cable conductor 3, the insulation DC electric cable insulation 4 extruded, the first wrapped inhibiting tape 5 from inside to outside successively, indulges the aluminium-plastic tape 6 wrapped, the first inner restrictive coating 7 extruded; The external sheath layer 12 that described control line sandwich layer comprises the second wrapped inhibiting tape 9 from inside to outside successively, extrudes the second inner restrictive coating 10, proof copper-wire braided and coating flame retarding material 11, extrudes outward.
Wherein, be filled with flame resistant filler rope 8 between control conductor 1, control conductor outer 1 is surrounded with control conductor insulation 2 i.e. alkali-free glass fibre band; First inhibiting tape 5, second inhibiting tape 9 is alkali-free glass fibre band, and described flame resistant filler rope 8 is alkali-free glass wool rope; First inner restrictive coating 7 is polythene inner or low-smoke bittern-free highly fire-proof oxygen barrier sheath, and the second inner restrictive coating 10 is for being filled with the low-smoke bittern-free highly fire-proof oxygen barrier sheath of inorganic combustion inhibitor; Proof copper-wire braided is with coating flame retarding material 11, and coating fire proofing is Ceramic silicon rubber coating material; External sheath layer 12 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 add capsicim as anti-termite agent in sheath material.
The conductor that compound flexible cable of the present invention adopts is the naked annealed copper conductor meeting GB/T3956-2008 commonly used of cable or metal cladding annealed copper conductor, the hard circular copper wire of multiply comprising compacting pressing forms the 5 class conductors etc. of 2 class conductors or the soft circular copper wire composition of non-multiply of pressing, and preferentially selects wire core diameter to be less than the zinc-plated 5 class conductors of 0.5mm.Insulation is crosslinked polyethylene or ethylene-propylene rubber, preferentially selects ethylene-propylene rubber.
The invention provides the composite braided shielded flexible cable of the dynamic control of a kind of urban track traffic; 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. the urban track traffic composite braided shielded flexible cable of dynamic control, comprise insulation DC electric cable cable core and at least two control conductor, it is characterized in that, described control conductor concentric stranding forms control line sandwich layer outward at insulation DC electric cable cable core; Described insulation DC electric cable cable core comprises insulation DC electric cable conductor, the insulation DC electric cable insulation extruded, the first wrapped inhibiting tape from inside to outside successively, indulges the aluminium-plastic tape wrapped, the first inner restrictive coating extruded; Described control line sandwich layer comprises the second wrapped inhibiting tape from inside to outside successively outward, extrudes the second inner restrictive coating, proof copper-wire braided and coating flame retarding material, the external sheath layer that extrudes.
2. a kind of urban track traffic according to claim 1 composite braided shielded flexible cable of dynamic control, is characterized in that, be filled with flame resistant filler rope between described control conductor.
3. a kind of urban track traffic according to claim 1 composite braided shielded flexible cable of dynamic control, is characterized in that, be surrounded with alkali-free glass fibre band outside described control conductor.
4. a kind of urban track traffic according to claim 2 composite braided shielded flexible cable of dynamic control, it is characterized in that, described first inhibiting tape, the second inhibiting tape are alkali-free glass fibre band, and described flame resistant filler rope is alkali-free glass wool rope.
5. a kind of urban track traffic according to claim 1 composite braided shielded flexible cable of dynamic control, it is characterized in that, the first described inner restrictive coating is polythene inner or low-smoke bittern-free highly fire-proof oxygen barrier sheath.
6. a kind of urban track traffic according to claim 1 composite braided shielded flexible cable of dynamic control, it is characterized in that, the second described inner restrictive coating is the low-smoke bittern-free highly fire-proof oxygen barrier sheath being filled with inorganic combustion inhibitor.
7. a kind of urban track traffic according to claim 1 composite braided shielded flexible cable of dynamic control, is characterized in that, described proof copper-wire braided is with coating flame retarding material, and coating fire proofing is Ceramic silicon rubber coating material.
8. a kind of urban track traffic according to claim 1 composite braided shielded flexible cable of dynamic control, it is characterized in that, described external sheath layer is low-smoke halogen-free flame-retardant sheath material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883605.4A CN105304177A (en) | 2015-12-07 | 2015-12-07 | Power control composite braided shield flexible cable for urban railway system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510883605.4A CN105304177A (en) | 2015-12-07 | 2015-12-07 | Power control composite braided shield flexible cable for urban railway system |
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| CN105304177A true CN105304177A (en) | 2016-02-03 |
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| CN201510883605.4A Pending CN105304177A (en) | 2015-12-07 | 2015-12-07 | Power control composite braided shield flexible cable for urban railway system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945969A (en) * | 2017-12-26 | 2018-04-20 | 无锡市明珠电缆有限公司 | A kind of orbit traffic direct current traction combination flexible cable and preparation method thereof |
| 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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| CN204166927U (en) * | 2014-09-26 | 2015-02-18 | 湖北红旗电缆有限责任公司 | A kind of track traffic dynamic control composite cable |
| CN205318889U (en) * | 2015-12-07 | 2016-06-15 | 无锡江南电缆有限公司 | Urban rail transit is with moving accuse combined braided shielded flexible cable |
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2015
- 2015-12-07 CN CN201510883605.4A patent/CN105304177A/en active Pending
Patent Citations (6)
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| CN203276947U (en) * | 2013-04-11 | 2013-11-06 | 安徽海纳电缆集团有限公司 | Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945969A (en) * | 2017-12-26 | 2018-04-20 | 无锡市明珠电缆有限公司 | A kind of orbit traffic direct current traction combination flexible cable and preparation method thereof |
| 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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Application publication date: 20160203 |