CN204516429U - Exchange the special electric comprehensive cable that blocks water of goat - Google Patents
Exchange the special electric comprehensive cable that blocks water of goat Download PDFInfo
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- CN204516429U CN204516429U CN201520206874.2U CN201520206874U CN204516429U CN 204516429 U CN204516429 U CN 204516429U CN 201520206874 U CN201520206874 U CN 201520206874U CN 204516429 U CN204516429 U CN 204516429U
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Abstract
The utility model discloses the special electric comprehensive cable that blocks water of a kind of interchange goat.The utility model avoids the secondary wiring of the railway system, and networking expense is low.Non-electromagnetic field interference between electric unit, light unit, Long-term service temperature is mutually compatible.The outer wrapped sintering NTC material of conductor, make cable can under low current-carrying, low temperature environment persistent fever, overcome and solve from reducing insulating material temperature resistant grade the obstacle that cable runs under-70 DEG C of low temperature environments merely.Stranded five line group structures avoid voltage virtual height that present stage star-quad construction (quad) causes because distributed capacitance between group is excessive the phase angle exchanging voltage, electric current in goat motor not mate to cause and motor and not to operate the generation of phenomenon.The properties such as waterproof and dampproof characteristic, impact property, lateral pressure resistant characteristic meet cable safety and reliability run steady in a long-term under different complicated geographical environment.
Description
Technical field
The utility model is specifically related to one for railway signal system exchanges special (light) the electric comprehensive cable that blocks water of goat under-70 DEG C ~+90 DEG C ambient temperatures, can exchange for railway signal system exchanges goat rated voltage transmission, the signal controlling that 1000 volts or direct current 1500 volts and following power provide electric energy.
Background technology
Railway signal system exchanges goat primarily of parts compositions such as motor, decelerator, frictional clutch, roller screw, push pedal cover, actuating strut, lock dog, locking iron, contact seat group, actuating strut, locking bar (expression) bars.Exchanging goat is take motor as power, after decelerator slows down, change track switch.In track switch displacement and after stock rail is closely connected, its locking is formed the equipment of corresponding expression.
After railway signal system exchanges goat motor connecting power, the pinion on motor carries out double reduction transmission of power on the gear of frictional clutch by the travelling gear in gear box; By the rubbing action of outside friction disc in frictional clutch, the rotary motion of gear is delivered on ball-screw, and ball-screw converts the rotary motion of travelling gear the horizontal movement that the push pedal that connects with leading screw overlaps to; Push pedal cover horizontal rectilinear motion, promotes the lock dog that is arranged on actuating strut, locking iron auxiliary under make actuating strut horizontal movement, complete the unblock of goat, conversion and locking functions.
In the whole course of work exchanging goat, cable is responsible for providing delivery of electrical energy and signal controlling to motor.Be the first ring exchanging goat work be also a most important ring.Existing railway (numeral) signal cable meets railroad industry standard TB/T 2476 " railway signal cable " and TB/T3100 " railway digital signal cable ", its cable star-quad construction (quad) cable core is that the solid of 1.0mm or polyethylene foamed insulated single wire are formed by conductor diameter, cable operating temperature scope-40 DEG C ~+70 DEG C.
Exchanging goat cable is after the star quad stranding group (quad) of one group of signal cable and another single line core doubling organized in signal cable star quad stranding group are formed five line groups, used by multiple five line group unit parallel connections again, this mode is in cabling process, being equivalent to two star-quad construction (quad) eight core cables replaces five-core cable to use, cause great economic waste, the cross one another mode of connection makes troubles not only to wiring identification, the more important thing is that stranded five line group structures avoid present stage star-quad construction (quad) and cause voltage in interchange goat motor because distributed capacitance between group is excessive, the generation of the voltage virtual height phenomenon and motor does not operate caused is not mated at the phase angle of electric current.If exchanging goat unblock, conversion and locking functions performs thorough, the accident of generation will be fatal.
For railway signal engineering, the monitoring system in current building still remains the working method indirectly obtaining Analysis on monitoring data, and limitation is very large.Therefore the monitoring channel setting up outdoor system is imperative.Traditional railway signal control information transmission relies on electric transmission channel completely, as communicated with small diameter coaxial cable, radio frequency cable etc., cable kilometer is longer, transformation parameter desired value reduces more obvious, and when rail traffic vehicles actual motion, the magnetic field that on rail, the alternating current of upper kiloampere induces also is huge to the interference of telecommunication cable transformation parameter.Along with the development of railway signal technology, the system of Optical Fiber Transmission has transmission capacity greatly because of it, and antijamming capability is strong, and the plurality of advantages such as information transmission is reliable and stable, long transmission distance, for railway signal control and information transmission provide better solution.
Because the geographical environment of Along Railway is complicated; cable can not ensure the dry section that is always laid in; usually can be placed on humidity or have the location of water; cable is inner as invaded moisture; then its insulation property will significantly decline; also to ensure that cable has good waterproof and dampproof performance, to guarantee that cable is used safely for a long time in this special environment for this reason.
Be positioned at Chinese Mo River, people have recorded-50.1 DEG C of minimum temperatures, and are positioned at difficult to understand according to rice bran, people have recorded-67.8 DEG C of minimum temperatures, therefore along with the acceleration of China's high ferro go-global strategy advances, in order to ensure the reliability service of cable, the resistance to low temperature improving cable is imperative.
Utility model content
Utility model object: in order to solve the deficiencies in the prior art, the utility model provides the special electric comprehensive cable that blocks water of a kind of interchange goat.
Technical scheme: the special electric comprehensive cable that blocks water of a kind of interchange goat, comprises conductor, insulating barrier, belting layer, screen, inner covering, armour, light unit and external sheath layer;
Electrical transmission part is formed by conductor and insulating barrier; Conductor is made up of the semiconductive NTC material of stranded tinned copper conductor and wrapped sintering; After the outer wrapped sintering one deck NTC material of conductor, cable keeps low current-carrying at low temperatures, continue a large amount of heating, make cable temperature long term maintenance more than-25 DEG C, after cable temperature exceedes-25 DEG C, NTC material resistance sharply reduces, and can not affect the maximum operating temperature of cable, ensures the normal operation of cable; So just overcome and be difficult to merely solve from reducing insulating material temperature resistant grade the obstacle that cable runs under-70 DEG C of low temperature environments;
Light unit composition optical transport part, jointly form cable core with electric unit, described cable core adopts greasy for preventing water to fill, and overcoat has belting layer, and described belting layer overlaps outward successively screen, inner covering, armour and external sheath layer;
Described cable adopts thickness be not less than the aluminium strip welding manner of 1.1mm or define aluminium sheath screen after adopting the direct extrusion way of health frame to cast fine and close aluminum pipe, and scribbles PUR on aluminium sheath surface.
As optimization: described insulating barrier adopts 40% novel low ratio foamed modified polyethylene material insulation.
As optimization: electric unit forms by 5 lines are stranded, according to the requirement used, five core working cells more than two can be twisted into cable core again.
As optimization: described smooth unit is the soft light unit of the fine number of two cores or four-core.
As optimization: described belting layer, greasy for preventing water is adopted to fill.
Beneficial effect: cable of the present utility model has electric unit simultaneously, adds line and light unit.Avoid the secondary wiring of the railway system, networking expense is low.Non-electromagnetic field interference between electric unit, light unit, Long-term service temperature is mutually compatible.When eliminating control information transmission or the power supply of the goat of railway signal system interchange for a long time, between star-quad construction (quad) cable with five phase power supplys, do not mate the generation of phenomenon.Improve unit cable ampacity, avoid in long-term vibration running, after certain root or a few wire fractures, current decay degree is not enough to trigger alarm device, other wire is still in on-state makes interchange goat run in spite of illness, exchanges the generation of the not thorough accident of goat inner locking.The outer wrapped sintering NTC material of conductor, make cable can under low current-carrying, low temperature environment persistent fever, overcome and solve from reducing insulating material temperature resistant grade the obstacle that cable runs under-70 DEG C of low temperature environments merely.Stranded five line group structures avoid voltage virtual height that present stage star-quad construction (quad) causes because distributed capacitance between group is excessive the phase angle exchanging voltage, electric current in goat motor not mate to cause and motor and not to operate the generation of phenomenon.The properties such as waterproof and dampproof characteristic, impact property, lateral pressure resistant characteristic meet cable safety and reliability run steady in a long-term under different complicated geographical environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.For those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Embodiment
As shown in Figure 1, the special electric comprehensive cable that blocks water of a kind of interchange goat, comprises conductor 1, insulating barrier 2, belting layer 3, screen 4, inner covering 5, armour 6, light unit 7 and external sheath layer 8;
Electrical transmission part is formed by conductor 1 and insulating barrier 2; Conductor 1 is made up of the semiconductive NTC material of stranded tinned copper conductor and wrapped sintering; After the outer wrapped sintering one deck NTC material of conductor 1, cable keeps low current-carrying at low temperatures, continue a large amount of heating, make cable temperature long term maintenance more than-25 DEG C, after cable temperature exceedes-25 DEG C, NTC material resistance sharply reduces, and can not affect the maximum operating temperature of cable, ensures the normal operation of cable; So just overcome and be difficult to merely solve from reducing insulating material temperature resistant grade the obstacle that cable runs under-70 DEG C of low temperature environments.
Light unit 7 forms optical transport part, jointly forms cable core with electric unit, and described cable core adopts greasy for preventing water to fill, and overcoat has belting layer 3, and the outer cover successively of described belting layer 3 has screen 4, inner covering 5, armour 6 and external sheath layer 8;
Described cable adopts thickness be not less than the aluminium strip welding manner of 1.1mm or define aluminium sheath screen 4 after adopting the direct extrusion way of health frame to cast fine and close aluminum pipe, and scribbles PUR on aluminium sheath surface.
Described insulating barrier 2 adopts 40% novel low ratio foamed modified polyethylene material insulation.
Electric unit forms by 5 lines are stranded, according to the requirement used, five core working cells more than two can be twisted into cable core again.
Described smooth unit 7 is the soft light unit of the fine number of two cores or four-core.
Described belting layer 3, adopts greasy for preventing water to fill.
A kind of preparation method exchanging the special electric comprehensive cable that blocks water of goat, by wire drawing, annealing, synnema, semi-conductive tape wrapped around knot, insulation, stranding, shielding, inner covering and sheathing, lock armo totally 10 operations form, wherein annealing insulation is critical process;
Conductor in wire drawing machine after the mould drawing that internal orifice dimension diminishes gradually, lattice surface is broken, conductor hardness is large, be unfavorable for the production of later process, after conductor is annealed, the lattice of these fragmentations is able to crystallization again and rearranges, and after ensure that annealing, conductor break percentage elongation is between 25% ~ 30%, improves the processing characteristics of conductor;
Adopt the three-layer co-extruded insulation process technology of skin-bubble-Pi, make to combine closely between each layer, for ensureing cable mutual capacitance, insulation foaming degree controls 40%, insulation eccentricity degree controls within 3%, insulated wire cores, after the incompressible test passing through 1200 ± 5N/1min, effectively ensure that the mechanical performance of cable.
Electrical transmission part is made up of conductor, insulating barrier.Wherein, electric unit can be used for electric power transfer and signal controlling, under the prerequisite ensureing cable ovality≤10%, can according to user's actual need, and appropriate increase or minimizing electric unit group number.
Electric unit is made up of five line groups, formed compared with five line groups use to organize the single line core joint in signal cable star glue group with another with the star glue group (quad) of former one group of signal cable after, stranded five line group distributed capacitance are less, cable profile size is less, prevents and cause because distributed capacitance is excessive the phase angle exchanging voltage, electric current in goat motor not mate and the voltage virtual height that causes and motor do not operate the generation of phenomenon while cutting the waste.According to the requirement used, five core working cells more than two can be twisted into cable core again.In cable core, every root core color is all not identical, easy identification.
Optical transport part is made up of light unit, the soft light unit of the many fine numbers such as two cores, four-core is provided to select for user, so both meet the flexibility of cable and the demand of different information carrying capacity in actual use, meet again long-distance transmissions requirement in various degree.
In the interference section with very strong-electromagnetic field, affect signal transmission quality for preventing the induced current in core and cause the misoperation of terminal goat equipment, the shielding layer structure of cable is required.This novel cable adopts thickness be not less than the aluminium strip welding manner of 1.1mm or define aluminium sheath shielding after adopting the direct extrusion way of health frame to cast fine and close aluminum pipe, and scribbles PUR to reach high anti-corrosion effects on aluminium sheath surface.Through arranging the desirable shielding factor measured value of a large amount of aluminium sheaths, verified that the desirable shielding factor of aluminium sheath is not more than 0.09, this is a kind of extremely excellent shielding mode.
Cable core adopts greasy for preventing water to fill, and waterstop is wrapped, ensure that the waterproof and dampproof performance of cable.By high magnetic conduction steel-tape armouring-8, the mechanical performances such as cable shock resistance, anti-side pressure performance and mouse bite preventing are increased substantially, shield with aluminium sheath simultaneously and complement each other, adopt the screen of two kinds of different materials, complete electric field shielding and magnetic field shielding, the perfect electric property of cable simultaneously.Finally meet cable safety and reliability run steady in a long-term under different complicated geographical environment.
A kind of novel resistance to-70 DEG C of ultralow temperature railway signal cable specials that the utility model proposes, its cross-sectional area of conductor adopts 1.5 mm
2, and 2.5mm
2the zinc-plated stranded conductor of specification, the very big amplitude of flexibility of twisted cable conductor improves the reliability of cable under Long-term Vibration condition.2.5mm
2the ampacity of core is equivalent to 0.75mm conventional at present
23.5 times of core ampacity, greatly improve carrying of cable and stay ability.Air oxidation under humidity environment, corrosive gas can corrode after cable conductor monofilament is zinc-plated, ensure the stability of cable conductor resistance.
NTC(Negative Temperature CoeffiCient) refer to the exponentially relation reduction of temperature rising resistance, thermistor phenomenon and the material with negative temperature coefficient.This material be utilize two or more the metal oxide such as manganese, copper, silicon, cobalt, iron, nickel, zinc fully to mix, the semiconductive ceramic of the technique such as shaping, sintering, can be made into the thermistor with negative temperature coefficient (NTC).Its resistivity is inversely proportional with material with material constant, sintering atmosphere, sintering temperature are different with configuration state and change.Extrude one deck NTC material outside conductor after, cable keeps low current-carrying at low temperatures, continue a large amount of heating, make cable temperature long term maintenance more than-25 DEG C, after cable temperature exceedes-25 DEG C, NTC material resistance is extremely poly-to be reduced, and can not affect the maximum operating temperature of cable, ensure the normal operation of cable.So just overcome and be difficult to solve from the simple insulating material temperature resistant grade that reduces the obstacle that cable runs under-70 DEG C of low temperature environments.
Railway various types of signal cable insulation material generally all adopts 60% highly foaming polyethylene plastics to ensure the transformation parameter of cable at present, but it is due to its structural feature, the thermal endurance of highly foaming polyethylene material and resistance to ag(e)ing etc. are all poor, the signal cable insulation that the design adopts adopts 40% novel low ratio foamed modified polyethylene material insulation, under the prerequisite meeting cable transmission parameter, by the incompressible test of 1200 ± 5N/1min, compared to the incompressible test of 600 ± 5N/1min that former 60% highly foaming polyethylene insulated cable passes through, incompressible force value at least improves 100%, after reducing insulating barrier 20% foam degrees simultaneously, cable wear resistance, chemical proofing, the series of physicals such as stress crack resistant, chemical property has had very large improvement.Therefore cable is under the prerequisite keeping its original superior electrical performance, greatly increases actual serviceability.
The insulating barrier of existing signal cable all adopts star-quad construction (quad) four kinds of colour codes, is wound around bundle to show difference between different line groups with the yarn of different colors.This star quad stranding (quad) structure has not been suitable for the actual service condition of modern AC goat five phase power supply, five different colours insulated wire cores twist together with certain pitch by the design, form a working cell, five line groups are formed with the single line core doubling star quad stranding group (quad) of one group of signal cable and another organized in signal cable star quad stranding group, the occupation mode of five line groups is replaced to compare by two star quad stranding groups (eight core cables), the overall dimension of stranded five line group cables is less, cuts the waste; Distributed capacitance is less, prevents because mutual capacitance is excessive, causes and exchanges goat built-in motor voltage, test voltage value that the phase angle of electric current is not mated and caused is very high, the generation of phenomenon but motor does not operate.According to the requirement used, five core working cells more than two can be twisted into again every root core color in cable core cable core all not identical, easy identification.
Using the difference of whistle control system according to cable, in the cable core of cable, add optical communication element, is improve cable softness, the soft light unit of the protective layer of this optical communication element preferably full nonmetallic materials.Fiber count in light unit can be two fibres, four fibres etc. many.Optical fiber, as the passage of additional communications functions in this signal system, also can be used as the medium of the optical transport information of signal controlling.
In the cable cabling process of cable core; special telecommunication cable greasy for preventing water can be filled; this ointment not only will will have good block-water effect; and its dielectric coefficient should be suitable with the dielectric coefficient of cross-linking polyethylene materials; and there are good insulation property; to be in the protection of good water proof environment to make cable and there is suitable transmission characteristic; the material water-proof material adopting dry type is not got rid of in the cable core of cable; as water blocking yarn; in the outside of cable conductor; band that is nonhygroscopic or that block water can be held, to improve its radial water-resisting characteristic.This ointment can be cured crosslinked at normal temperatures, improves the convenience of construction.
For the environment making cable security be applied in strong electromagnetic; in the outside of cable conductor; adopt the protective sleeve of electromagnetism interference; as certain thickness aluminium strip, aluminium-plastic tape, copper strips or compound copper-plastics band etc.; this non-ferrous metal band or composite band can adopt longitudinal measure or wrapped mode to be coated on the outside of cable conductor, when adopting thick non-ferrous metal band, as thickness be greater than 0.5mm time; metal tape can embossing or embossing, has good bending property to make cable.This metal screen layer can be one or more layers composite construction, and when adjacent screen adopts different metals, it is better to the shield effectiveness of external electromagnetic field.
Outside the metal tape of cable, hold or extrude the protection jacket layer (inner covering) that one deck insulation property are good; can be non-metallic or other plastic protective layer of non-moisture absorption; the performance that this insulating protective layer will have good proof voltage to impact, also as the lightning protection layer of cable.
At the galvanized steel strip of the outer wrapped two-layer high permeability of the inner covering of cable, for the bending property improving cable can adopt the lock armo mode of rolling if desired.This steel belt layer not only increases the ability of the anti-external electromagnetic field interference of cable, and for protecting the ability providing fabulous anti-exterior mechanical and impact and destroy.
Outside the steel belt layer of cable, extrude the plastic protective sleeve of one deck cable, this plastic protective sleeve can be material that is fire-retardant or non-flame resistant, and has good anti-external corrosion and aging performance.
Cable of the present utility model has electric unit simultaneously, adds line and light unit.Avoid the secondary wiring of the railway system, networking expense is low.Non-electromagnetic field interference between electric unit, light unit, Long-term service temperature is mutually compatible.When eliminating control information transmission or the power supply of the goat of railway signal system interchange for a long time, between star-quad construction (quad) cable with five phase power supplys, do not mate the generation of phenomenon.Improve unit cable ampacity, avoid in long-term vibration running, after certain root or a few wire fractures, current decay degree is not enough to trigger alarm device, other wire is still in on-state makes interchange goat run in spite of illness, exchanges the generation of the not thorough accident of goat inner locking.The outer wrapped sintering NTC material of conductor, make cable can under low current-carrying, low temperature environment persistent fever, overcome and solve from reducing insulating material temperature resistant grade the obstacle that cable runs under-70 DEG C of low temperature environments merely.Stranded five line group structures avoid voltage virtual height that present stage star-quad construction (quad) causes because distributed capacitance between group is excessive the phase angle exchanging voltage, electric current in goat motor not mate to cause and motor and not to operate the generation of phenomenon.The properties such as waterproof and dampproof characteristic, impact property, lateral pressure resistant characteristic meet cable safety and reliability run steady in a long-term under different complicated geographical environment.
Claims (4)
1. the special electric comprehensive cable that blocks water of interchange goat, is characterized in that: comprise conductor (1), insulating barrier (2), belting layer (3), screen (4), inner covering (5), armour (6), light unit (7) and external sheath layer (8);
Electrical transmission part is formed by conductor (1) and insulating barrier (2); Conductor (1) is made up of the semiconductive NTC material of stranded tinned copper conductor and wrapped sintering; In conductor (1) wrapped sintering one deck NTC material outward;
Light unit (7) composition optical transport part, jointly cable core is formed with electric unit, described cable core adopts greasy for preventing water to fill, overcoat has belting layer (3), and described belting layer (3) overlaps outward successively screen (4), inner covering (5), armour (6) and external sheath layer (8);
Described screen (4) adopts thickness be not less than the aluminium strip welding manner of 1.1mm or form aluminium sheath after adopting the direct extrusion way of health frame to cast fine and close aluminum pipe, and scribbles PUR on aluminium sheath surface.
2. the special electric comprehensive cable that blocks water of interchange goat according to claim 1, is characterized in that: described insulating barrier (2) adopts 40% novel low ratio foamed modified polyethylene material insulation.
3. the special electric comprehensive cable that blocks water of interchange goat according to claim 1, is characterized in that: described smooth unit (7) is the soft light unit of the fine number of two cores or four-core.
4. the special electric comprehensive cable that blocks water of interchange goat according to claim 1, is characterized in that: described belting layer (3), adopts greasy for preventing water to fill.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520206874.2U CN204516429U (en) | 2015-04-08 | 2015-04-08 | Exchange the special electric comprehensive cable that blocks water of goat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206874.2U CN204516429U (en) | 2015-04-08 | 2015-04-08 | Exchange the special electric comprehensive cable that blocks water of goat |
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| CN204516429U true CN204516429U (en) | 2015-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751965A (en) * | 2015-04-08 | 2015-07-01 | 中天科技装备电缆有限公司 | Alternate-current switch machine special resistance hydropower integrated cable and key procedure implementation method |
-
2015
- 2015-04-08 CN CN201520206874.2U patent/CN204516429U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751965A (en) * | 2015-04-08 | 2015-07-01 | 中天科技装备电缆有限公司 | Alternate-current switch machine special resistance hydropower integrated cable and key procedure implementation method |
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