CN205318880U - Urban rail transit is with moving compound flexible cable of accuse - Google Patents

Abstract

The utility model provides an urban rail transit is with moving compound flexible cable of accuse, including DC power cable cable core and two piece at least control core, its characterized in that, the control core concentric stranding constitutes the control core layer outside the DC power cable cable core, the DC power cable cable core includes the first fire -retardant area that the DC power cable of DC power cable conductor, crowded package is insulating, wind the package, the composite aluminium -plastic tape who indulges the package, crowded first inner sheath layer of wrapping from inside to outside in proper order, include the oversheath layer around the fire -retardant area of second of package, crowded package second inner sheath layer, copper wire and the mixed weaving layer of glass fiber silk, crowded package outside the control core layer from inside to outside in proper order, this complex flexible cable has higher insulating properties, fire -retardant A level, low smoke and zero halogen, waterproof, protection against rodents prevents that ant, anti ultraviolet, resistance field disturb, the compliance is good, bending property is good, compact structure, and realizes transmission electric energy and control, signal, protection and measuring function simultaneously.

Description

The compound flexible cable of moving control for a kind of urban track traffic

Technical field

The utility model patent relates to cable technology field, particularly, relates generally to the compound flexible cable of the moving 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, and due to the particularity of track traffic, security, reliability requirement to power system are high. 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, when 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 even phenomenon such as cracking that declines, 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.

Utility model content

The purpose of this utility model be to provide a kind ofly have that higher insulating properties, fire-retardant A level, low smoke and zero halogen, waterproof, termite-resistant rodent-resistant, antiultraviolet, anti-electric field are disturbed, flexibility is good, good bending property, compact conformation, and play the compound flexible cable of the moving control of urban track traffic of electric energy transmitting and control, signal, protection and measurement simultaneously.

The compound flexible cable of moving control for a kind of urban track traffic described in the utility model, comprises insulation DC electric cable cable core and at least two control cores. Described control core concentric stranding forms control line sandwich layer outward at insulation DC electric cable cable core; The insulation DC electric cable insulation that described insulation DC electric cable cable core comprises insulation DC electric cable conductor from inside to outside successively, extrude, the first wrapped inhibiting tape, the aluminium-plastic tape of vertical bag, the first inner restrictive coating extruding; Described control line sandwich layer comprises successively from inside to outside the second wrapped inhibiting tape outward, extrudes the second inner restrictive coating, copper wire and glass fiber mixed weaving layer, the external sheath layer that extrudes.

Further improve, between described control core, be filled with fire-retardant gasket for packing.

Further improve, described control core is surrounded with alkali-free glass fibre band outward.

Further improve, described the first inhibiting tape, the second inhibiting tape are alkali-free glass fibre band, and described fire-retardant gasket for packing is alkali-free glass wool rope.

Further improve, the first described inner restrictive coating is polythene inner or low-smoke bittern-free highly fire-proof oxygen barrier sheath.

Further improve, the second 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 wire+glass fiber mixed weaving layer is double braid or multi-layer braided again.

The utility model adopts above technical scheme compared with prior art, has following technique effect:

(1) have higher insulating properties, without compared with (low) halogen flame-proof cross-linking polyolefin insulation, the electricity function index such as insulaion resistance constant and specific insulation of cable can not reduce, and has kept higher insulating properties with the low cigarette of available technology adopting.

(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, makes cable reach the requirement of fire-retardant A level, and in category-A combustion test, jacket surface carbonization partial-length can meet national standard requirement. High flame retardant oxygen barrier sheath, its oxygen index (OI) 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, retardation the raising of oversheath intensification under flame, in addition, in the time that aluminium hydroxide temperature is increased to 250 DEG C, 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 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, has also completely cut off contacting of insulation and extraneous oxygen, makes the intensity of a fire controlled. Alkali-free glass fibre band, alkali-free glass wool rope are by alkali-free glass gauze Shu Hecheng thigh stranded forming again, fire-retardant, fire-resistant, have higher tensile strength simultaneously, higher electrical insulation capability, and chemical stability and heat resistance preferably, and hygroscopicity is little.

(3) first inner restrictive coatings, the second inner restrictive coating, 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, electrical 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 electrical 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 radially water proofing property, and alkali-free glass wool rope hygroscopicity is little, can play longitudinal waterproof action.

(5) termite-resistant rodent-resistant, 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 the aluminium-plastic tape of vertical 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 is very little and tolerate vibrations, can be used in radius of turn and require strict place.

(9) compact conformation, controlling core and power core is concentric structure, 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 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, when construction, easily damaged the problem of tiny control cables core.

Brief description of the drawings

Below with reference to accompanying drawing, the utility model is described in further detail:

Fig. 1 is structural representation of the present utility model;

Wherein, 1, control core, 2, control line core insulation, 3, insulation DC electric cable conductor, 4, insulation DC electric cable insulation, 5, the first inhibiting tape, 6, aluminium-plastic tape, 7, the first inner restrictive coating, 8, fire-retardant gasket for packing, 9, the second inhibiting tape, 10, the second inner restrictive coating, 11, copper wire and glass fiber mixed weaving layer, 12, external sheath layer.

Detailed description of the invention

The utility model provides the moving control of a kind of urban track traffic compound flexible cable, and for making the purpose of this utility model, technical scheme and effect are clearer, clear and definite, and with reference to accompanying drawing examples, the utility model are further described. Should be appreciated that concrete enforcement described herein is only in order to explain the utility model, and be not used in restriction the utility model.

The compound flexible cable of moving control for urban track traffic as shown in Figure 1, comprises insulation DC electric cable cable core and at least two control cores 1. Described control core 1 concentric stranding forms control line sandwich layer outward at insulation DC electric cable cable core; The insulation DC electric cable insulation 4 that described insulation DC electric cable cable core comprises insulation DC electric cable conductor 3 from inside to outside successively, extrude, the first wrapped inhibiting tape 5, the aluminium-plastic tape 6 of vertical bag, the first inner restrictive coating 7 extruding; Described control line sandwich layer comprises successively from inside to outside the second wrapped inhibiting tape 9 outward, extrudes the second inner restrictive coating 10, copper wire and glass fiber mixed weaving layer 11, the external sheath layer 12 that extrudes.

Wherein, control between core and be filled with fire-retardant gasket for packing 8, controlling and being surrounded with control line core insulation 2 outside core 1 is alkali-free glass fibre band; The first inhibiting tape 5, the second inhibiting tape 9 are alkali-free glass fibre band, and fire-retardant gasket for packing 8 is alkali-free glass wool rope; The first inner restrictive coating 7 is polythene inner or low-smoke bittern-free highly fire-proof oxygen barrier sheath, 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, 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 in sheath material, add capsicim as anti-termite agent; Copper wire and glass fiber mixed weaving layer 11 are double braid or multi-layer braided.

The conductor that the compound flexible cable of the utility model adopts is the naked annealed copper conductor that meets GB/T3956-2008 or the metal cladding annealed copper conductor that cable is conventional, the hard circular copper wire of multiply that comprises compacting pressing forms 5 class conductors of 2 class conductors or the soft circular copper wire composition of non-multiply of pressing etc., preferentially selects wire core diameter to be less than the zinc-plated 5 class conductors of 0.5mm; Insulation, for crosslinked polyethylene or EP rubbers, is preferentially selected EP rubbers.

The utility model provides the moving control of a kind of urban track traffic compound flexible cable; the above is only preferred implementation method of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvement, these improve and also should be considered as protection domain of the present utility model.

Claims (8)

1. the compound flexible cable of moving control for urban track traffic, comprises insulation DC electric cable cable core and at least two control cores, it is characterized in that, described control core concentric stranding forms control line sandwich layer outward at insulation DC electric cable cable core; The insulation DC electric cable insulation that described insulation DC electric cable cable core comprises insulation DC electric cable conductor from inside to outside successively, extrude, the first wrapped inhibiting tape, the aluminium-plastic tape of vertical bag, the first inner restrictive coating extruding; Described control line sandwich layer comprises successively from inside to outside the second wrapped inhibiting tape outward, extrudes the second inner restrictive coating, copper wire and glass fiber mixed weaving layer, the external sheath layer that extrudes.

2. the compound flexible cable of moving control for a kind of urban track traffic according to claim 1, is characterized in that, between described control core, is filled with fire-retardant gasket for packing.

3. the compound flexible cable of moving control for a kind of urban track traffic according to claim 1, is characterized in that, described control core is surrounded with alkali-free glass fibre band outward.

4. the compound flexible cable of moving control for a kind of urban track traffic according to claim 2, is characterized in that, described the first inhibiting tape, the second inhibiting tape are alkali-free glass fibre band, and described fire-retardant gasket for packing is alkali-free glass wool rope.

5. the compound flexible cable of moving control for a kind of urban track traffic according to claim 1, 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. the compound flexible cable of moving control for a kind of urban track traffic according to claim 1, is characterized in that, the second described inner restrictive coating is the low-smoke bittern-free highly fire-proof oxygen barrier sheath that is filled with inorganic combustion inhibitor.

7. the compound flexible cable of moving control for a kind of urban track traffic according to claim 1, is characterized in that, described external sheath layer is low-smoke halogen-free flame-retardant sheath material.

8. the compound flexible cable of moving control for a kind of urban track traffic according to claim 1, is characterized in that, described copper wire and glass fiber mixed weaving layer are double braid or multi-layer braided.