CN202150299U - Electrification railway middling pressure single core cable - Google Patents
Electrification railway middling pressure single core cable Download PDFInfo
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- CN202150299U CN202150299U CN 201120240846 CN201120240846U CN202150299U CN 202150299 U CN202150299 U CN 202150299U CN 201120240846 CN201120240846 CN 201120240846 CN 201120240846 U CN201120240846 U CN 201120240846U CN 202150299 U CN202150299 U CN 202150299U
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- core cable
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- insulation
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Abstract
The utility model discloses an electrification railway middling pressure single core cable. The cable insulation core from inside and outside is composed of a conductor, a conductor shielding layer, an insulating layer and an insulation shielding layer; the insulation core is successively covered with an internal resistance water hose, an insulation core shielding layer, a copper strip shielding layer, an inner sheath, an armor layer, a flame retardation glass fiber tape, an external resistance water hose and an outer jacket. The electrification railway middling pressure single core cable possesses a high environmental protection performance, generates less smog and no harmful halogen acid substances while burning, and possesses high mechanical strength, large bearing current, an excellent anti-ant and anti-mouse performance and a water resistance performance.
Description
Technical field:
The utility model relates to a kind of cable, presses single-core cable in specifically a kind of electric railway.
Background technology:
Along with electric railway, the particularly development of high-speed electric railway, the butt joint power supply quality has proposed strict more requirement, and the single-phase cable of 27.5kV electric railway of high-quality high energy becomes a kind of development trend.Because the used 27.5kV side apparatus of electric railway traction connects and outgoing with the particularity of cable in electric power system and environment for use, the performance of cable is had specific (special) requirements.And common twisted polyethylene cable can't satisfy these demands aspect environmental protection, loaded current, fire-retardant, waterproof, anti-ant mouse and useful life, connects and the outgoing private cable so the exigence development is exclusively used between electric railway traction 27.5kV side apparatus.
Summary of the invention:
For overcoming the defective of prior art; The purpose of the utility model is to provide in a kind of electric railway presses single-core cable; This cable produced less smog and did not produce harmful hydracid material when both having possessed high environmental-protecting performance, burning, possessed mechanical strength height, big, good anti-ant mouse performance and the block-water performance of loaded current again.
The utility model technical solution problem adopts following technical scheme:
Press single-core cable in the electric railway; The insulated wire cores from-inner-to-outer of cable is made up of conductor, conductor shield, insulating barrier and insulation screen, outside said insulated wire cores, is coated with interior waterstop, insulated wire cores screen, copper strips screen, inner sheath, armour, fire-retardant glass fiber belt, outer waterstop and outer jacket successively.
The design feature of the utility model also is:
Said armour is the nonmagnetic metal aluminum-alloy wire.
Said outer jacket is the anti-ant mouse outer jacket of low smoke and zero halogen.
Said inner sheath is extruded by low smoke halogen-free flame-retardant polyolefin and forms.
Compared with present technology, the beneficial effect of the utility model is embodied in:
Cable is through optimized Structure Design, and conductor adopts second type copper core compacted stranded conductor, can prevent the corrosion of moisture content and other harmful substance; Adopt copper wire to twine shielding and non magnetic aluminum-alloy wire winding armouring; The logical loading capability and the tension bearing capacity of cable short circuit electric current are greatly improved, have satisfied electric railway traction power supply system 27.5kV side short circuit and cable possibly bear huge mechanical resistance pulling force in laid processes is installed needs.
Cable is through being provided with the comprehensive waterproof layer; Waterstop adopts glass yarn waterstop, and its capacity surpasses 40ml/g, promptly has block-water performance preferably; Solve cable owing to possibly long period of soaking in water, causing crosslinked polyetylene insulated puncture, improved the safety in operation of cable.
Cable has synthesized environmental protection performances such as LSOH anti-flaming termite-resistant rodent-resistant.
Do not contain halogen, do not produce pernicious gas and corrosive gas (Halogen).The amount of being fuming few (low cigarette) during burning.
During fire, for guaranteeing to be unfamiliar with the chance that on-the-spot personnel have escape, visual range is not less than 15 meters, and the visual range during the normal cable burning is merely 5-8 rice, and this project indicator is far longer than 15 meters.
The not leaded heavy metal that waits does not contain environmental hormone, and contaminated soil is not environmentally friendly.
Outer jacket adopts the anti-ant mouse sheath material of environmental-friendly halogen-free low-smoke; This material adopts the termite-resistant rodent-resistant repellant that from multiple natural plants, extracts; After repeatedly compound, add in the cable sheath material, make cable jacket contain a kind of specific peculiar smell, detest and reject contact because of its sense of smell is upset behind the mouse ant class animal contact cable; Also can send impalpable information and produce population effect simultaneously, thereby reach the purpose that the protection cable is not destroyed by the mouse ant to colony.
Resistance to tension, bear the system short-circuit electric current and strengthen.Existing cable adopts copper strips or copper wire shielding, and it is little and bear the little problem of system short-circuit electric current that the utility model cable adopts copper wire shielding and non magnetic aluminium alloy armouring to solve resistance to tension.
Insulating material adopts crosslinked polyethylene to process, and this material not only has the superior electrical property of polyethylene, and compares with common polythene; Its mechanical performance is improved greatly; Especially tensile strength is several times of common polythene, and the environmental stress resistance performance of this material also improves a lot in addition, and common polythene material environmental stress resistance performance is poor; The insulation cracking phenomena in use appears easily; But the environmental stress resistance performance of this new material obtains very big improvement, has avoided cable the phenomenon that insulate and ftracture, the useful life of having improved cable greatly in use to occur; Smoke density was very low when the utility model product had burning, and non-corrosiveness gas is overflowed, and does not also produce harmful hydracid material; Termite-proof and mouse bites, and possesses advantages such as high flame retardant and block-water performance simultaneously, can be widely used in focusing the consruction on Line for Passenger Transportation, coal transport facility project and western main line railway; Improve freeway net, main line airport, Midwest and branch line airport construction are accelerated urban network reconstruction etc.; The startup of these projects is very big to the demand of cable.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Label among the figure: 1 conductor, 2 conductor shields, 3 insulating barriers, 4 insulation screens, 5 interior waterstops, 6 insulated wire cores screens, 7 copper strips screens, 8 inner sheaths, 9 armours, 10 fire-retardant glass fiber belts, 10 outer waterstops, 12 outer jackets.
Below pass through embodiment, and combine accompanying drawing that the utility model is described further.
Embodiment:
Embodiment: shown in Figure 1, the said cable of present embodiment, conductor 1 adopts the copper core of the 2nd class formation to press stranded conductor wire core, and the following step of conductor production process: wire drawing-annealing-twisted wire, stranded conductor wire core has stronger tensile property.On conductor 1, adopt three-layer co-extruded technology to extrude conductor shield 2, insulating barrier 3 and insulation screen 4, conductor shield 2 adopts crosslinked semi-conductive shielding material; Insulating barrier 3 adopts cross-linked polyethylene insulating material, and insulation screen 4 adopts peelable insulation shielding, and its production process adopts tubular molding tool simultaneously on SJ65, SJ150, SJ90 plastic extruding machine; Clamp-on three kinds of different materials to die head and once accomplish, carry out through dry cross-linking technology then, guarantee that cable has good electrical property, high mechanical performance and stronger tensile strength; Its extrusion temperature is according to the difference of warm area and different; The SJ65 body temperature is controlled at 70 ± 5 ℃, 80 ± 5 ℃, 90 ± 5 ℃, 100 ± 5 ℃, 115 ± 5 ℃, and head temperature is controlled at 120 ± 5 ℃, and die temperature is controlled at 120 ± 5 ℃; The SJ150 body temperature is controlled at 90 ± 5 ℃, 100 ± 5 ℃, 115 ± 5 ℃; Head temperature is controlled at 120 ± 5 ℃, and die temperature is controlled at 120 ± 5 ℃, and the SJ90 body temperature is controlled at 65 ± 5 ℃, 80 ± 5 ℃, 90 ± 5 ℃, 100 ± 5 ℃, 115 ± 5 ℃; Head temperature is controlled at 120 ± 5 ℃; Die temperature is controlled at 120 ± 5 ℃, can carry out suitable adjustment according to extrusion equipment and material and temperature in four seasons different, differs 5～10 ℃ in winter and summer.In the wrapped low smoke and zero halogen waterstop 5 be infringement insulation screen when preventing the core water inlet and twining the soft copper silk, the winding of insulated wire cores screen 6 usefulness soft copper silks, reverse wrapped copper strips screen 7, as cross-sectional area of conductor 150mm
2And 180mm
2The time metallic shield the cross section be not less than 25mm
2And 35mm
2, inner sheath 8 adopts the anti-ant mouse material of low smoke halogen-free flame-retardant polyolefin, carries out non magnetic aluminum-alloy wire outside the inner sheath 8 again and forms armour 9; Non magnetic aluminum-alloy wire armour 9 radicals are confirmed according to actual conditions; And can be suitable adjust, but guarantee behind the armouring non magnetic aluminum-alloy wire closely and the logical loading capability and the tension bearing capacity of cable short circuit electric current, total backlash is no more than a gauge of wire; Fire-retardant glass fiber belt 10 adopts overlapping wrapped mode, and its rate of putting up is not less than 15%.The outer waterstop 11 of wrapped low smoke and zero halogen adopts overlapping wrapped mode, and its rate of putting up is not less than 15%., outer jacket 12 adopts the anti-ant mouse outer jacket of low smoke and zero halogens; Also adopt tubular molding tool to extrude, and different, body temperature is controlled at 115 ± 10 ℃ to extrusion temperature according to the difference of warm area; Head temperature is controlled at 140 ± 10 ℃; Die temperature is controlled at 130 ± 5 ℃, can carry out suitable adjustment according to extrusion equipment and material different, differs 5～10 ℃ in winter and summer.Production equipment can adopt different sheath extruders to produce according to the size of the outside diameter of cable, use the SJ120 extruder.
Claims (4)
1. press single-core cable in the electric railway; The insulated wire cores from-inner-to-outer of cable is made up of conductor (1), conductor shield (2), insulating barrier (3) and insulation screen (4); It is characterized in that, outside said insulated wire cores, be coated with interior waterstop (5), insulated wire cores screen (6), copper strips screen (7), inner sheath (8), armour (9), fire-retardant glass fiber belt (10), outer waterstop (11) and outer jacket (12) successively.
2. press single-core cable in the electric railway according to claim 1, it is characterized in that, said armour (9) is the nonmagnetic metal aluminum-alloy wire.
3. press single-core cable in the electric railway according to claim 1, it is characterized in that, said outer jacket (12) is the anti-ant mouse outer jacket of low smoke and zero halogen.
4. press single-core cable in the electric railway according to claim 1, it is characterized in that, said inner sheath (8) is extruded by low smoke halogen-free flame-retardant polyolefin and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120240846 CN202150299U (en) | 2011-07-08 | 2011-07-08 | Electrification railway middling pressure single core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120240846 CN202150299U (en) | 2011-07-08 | 2011-07-08 | Electrification railway middling pressure single core cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202150299U true CN202150299U (en) | 2012-02-22 |
Family
ID=45591351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120240846 Expired - Lifetime CN202150299U (en) | 2011-07-08 | 2011-07-08 | Electrification railway middling pressure single core cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202150299U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3006496A1 (en) * | 2013-06-04 | 2014-12-05 | Sncf | ELECTRICAL CABLE FOR ATTENUATING HARMONIC CURRENTS AND EQUIPMENT PROVIDED WITH SUCH A CABLE |
| CN107767994A (en) * | 2016-08-17 | 2018-03-06 | 江苏宝安电缆有限公司 | A kind of offshore oil platform medium voltage converter cable |
-
2011
- 2011-07-08 CN CN 201120240846 patent/CN202150299U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3006496A1 (en) * | 2013-06-04 | 2014-12-05 | Sncf | ELECTRICAL CABLE FOR ATTENUATING HARMONIC CURRENTS AND EQUIPMENT PROVIDED WITH SUCH A CABLE |
| EP2811490A1 (en) * | 2013-06-04 | 2014-12-10 | Société Nationale des Chemins de Fer Français - SNCF | Electric cable for attenuating harmonic currents and device provided with such a cable |
| CN107767994A (en) * | 2016-08-17 | 2018-03-06 | 江苏宝安电缆有限公司 | A kind of offshore oil platform medium voltage converter cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120222 |