CN204596525U - The extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core - Google Patents
The extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core Download PDFInfo
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- CN204596525U CN204596525U CN201520322602.9U CN201520322602U CN204596525U CN 204596525 U CN204596525 U CN 204596525U CN 201520322602 U CN201520322602 U CN 201520322602U CN 204596525 U CN204596525 U CN 204596525U
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Abstract
The utility model relates to the extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core.Described cable comprises conductor, conductor adopt three-layer co-extruded crosslinked unit once extrude conductor shield, insulating barrier, insulation screen, wrapped semi-conductive layer on insulation screen, semi-conductive layer is provided with copper strip shielding layer, this copper strip shielding layer by dredge around annealed copper wire and surface form with oppositely wrapped copper strips, copper strip shielding layer arranges double-deck waterstop lapping layer, double-deck waterstop lapping layer sets gradually aluminium-poly-bonding sheath, armour and external sheath layer.The utility model has the performances such as excellent electrical insulation properties, LSOH anti-flaming, protection against rodents are termite-proof, heatproof tension, and has the characteristics such as long service life.
Description
Technical field
The utility model relates to a kind of special cable, particularly relates to the extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core.
Background technology
Railway as national economy main artery, national important infrastructure and the popular vehicles, have energy-conservation, save land, the multiple comparative advantages such as low-carbon (LC), be the green traffic instrument meeting China's fundamental realities of the country and sustainable development requirement.Electric railway, can the indirect consumption changed into the direct consumption of fuel oil coal and water resources as modern means of transportation, and directly discharge is close to zero, possesses skills and superiority in economy.For this reason, China attaches great importance to the development of electric railway, and the Mid-term and Long-term Plan of the Railway Network of State Council approved explicitly points out: to the year two thousand twenty, and China railways total kilometrage will reach 100000 kilometers, wherein electrified 50000 kilometers.Trunk railway lines major part all will realize electrification from now on, and electric traction will bear the prevailing traffic task of railway, in China Railway Transportation, be in leading position.Along with the raising of Railway Electric rate, for electric railway 27.5KV single-phase copper core crosslinked cable provides the huge market space.
Because electric railway cable major part in electric substation is lay in cable trough, and cable is in the majority with directly buried installation between supreme site in the wild, because south China local climate is moistening, relative rainwater is more, make regular being immersed in the water of cable possibility under these conditions, cable is intake or after making moist, moisture will progressively internally permeate, " water tree " phenomenon can be there is in the cable after making moist under action of high voltage, make crosslinked polyetylene insulated hydraulic performance decline, finally cause cable breakdown, useful life reduces greatly, this just requires that cable possesses stronger radial water resistance.In length and breadth, in metro environment, mouse is various for special region termite, and termite, mouse are very serious to the destruction of cable, gently then cause interruption of power supply, heavy then cause the accident, and electric power system is deeply hurt.Northern area relative weather severe cold in winter, make cable be subject to low temperature effect, common cable can cause cable cover(ing) to ftracture, and mechanical performance declines, and screen loses shield effectiveness etc.The conventional electrical railway cable laid in these rugged environments brings serious potential safety hazard can to the operation of railway.
Utility model content
The purpose of this utility model is to provide a kind of and has excellent mechanical properties and water-blocking moistureproof, protection against rodents is termite-proof, acid and alkali-resistance, shielding properties the are strong extraordinary crosslinked cable of electric railway 27.5kV single-phase copper core.
The technical solution of the utility model is: described cable comprises conductor, conductor adopt three-layer co-extruded crosslinked unit once extrude conductor shield, insulating barrier, insulation screen, wrapped semi-conductive layer on insulation screen, semi-conductive layer is provided with copper strip shielding layer, this copper strip shielding layer by dredge around annealed copper wire and surface form with oppositely wrapped copper strips, copper strip shielding layer arranges double-deck waterstop lapping layer, double-deck waterstop lapping layer sets gradually aluminium-poly-bonding sheath, armour and external sheath layer.
Described conductor adopts the 2nd kind strandedly to press circular copper conductors.
Described armour wrappedly to form by nonmagnetic aluminum-alloy wire is seamless, and aluminum-alloy wire direction of lay is contrary with the lapping direction of copper strip shielding layer.
Described oversheath is the termite-proof polyolefin jacket of LSOH anti-flaming protection against rodents of modification.
The utility model has the performances such as excellent electrical insulation properties, LSOH anti-flaming, protection against rodents are termite-proof, heatproof tension, and has the characteristics such as long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 is conductor, and 2 is conductor shields, and 3 is insulating barriers, and 4 is insulation screens, and 5 is wrapped semi-conductive layers, and 6 is annealed copper wires, and 7 is copper strips, and 8 is double-deck waterstop lapping layers, and 9 is aluminium-poly-bonding sheaths, and 10 is armours, and 11 is external sheath layers.
Embodiment
The extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core, described cable comprises conductor 1, conductor 1 adopt three-layer co-extruded crosslinked unit once extrude conductor shield 2, insulating barrier 3, insulation screen 4, wrapped semi-conductive layer 5 on insulation screen 4, semi-conductive layer 5 is provided with copper strip shielding layer, this copper strip shielding layer by dredge around annealed copper wire 6 and surface form with oppositely wrapped copper strips 7, copper strip shielding layer arranges double-deck waterstop lapping layer 8, double-deck waterstop lapping layer 8 sets gradually aluminium-poly-bonding sheath 9, armour 10 and external sheath layer 11.
Described conductor 1 adopts the 2nd kind strandedly to press circular copper conductors.
The described semi-conductive layer of conductor shield 2 for extruding, insulating barrier 3 is the XLPE insulation bed of material, insulation screen 4 is not strippable cross-linking type semi-conductive layer, in order to ensure the continuity of conductor shield 2, insulating barrier 3, insulation screen 4 and interface is smooth, air-gap-free, the three-layer co-extruded crosslinked unit with international most advanced level is adopted once to extrude, be coated on equably on conductor, extruding layer surface should be smooth, without obvious twisted wire burr, wedge angle, particle, incipient scorch or abrasive vestige, ensure that cable has excellent electrical insulation properties and good mechanical performance.
Described wrapped semi-conductive layer 5 outer wrapped 1 ~ 2 layer of insulation screen 4, then is dredged around copper strip shielding layer, and this can ensure shield effectiveness effectively.
Wrapped double-deck semiconductive compound waterstop lapping layer 8 on copper strip shielding layer, then indulge alclad plastic composite strip and extrude polyethylene, my company establishes the streamline that plastic-aluminum combined longitudinal tubing technique and extrusion process are integrated, both making, on same production line, once property completes, due to pressure and temperature during pe sheath extrusion molding, make the inner surface energy of the polyethylene film of aluminium-plastic tape surface-coated and pe sheath tight, intactly be bonded together, make equally aluminium-plastic tape put up between polyethylene film be mutually bonded together, effectively can eliminate the necessary condition of gap and radial infiltration like this, adopt double-deck waterstop lapping layer 8 and aluminium-poly-bonding sheath 9 is set, thoroughly can stop the immersion of moisture content.
Described armour 10 wrappedly to form by nonmagnetic aluminum-alloy wire is seamless, certain radial pull can be carried, the generation of eddy current can be eliminated again completely, effectively can reduce the thermal breakdown fault caused because of eddy current loss heating, reduce electric energy loss, improve the ampacity of cable, aluminum-alloy wire direction of lay is contrary with the lapping direction of copper strip shielding layer, can short circuit current be increased, improve the fail safe of cable.
Described oversheath 11 is the termite-proof polyolefin jacket of LSOH anti-flaming protection against rodents of modification, and this material has the performances such as excellent heatproof, tension, weather, protection against rodents are termite-proof, high flame retardant through modified, can meet the environmental requirement of electric railway.
Claims (4)
1. the extraordinary crosslinked cable of electric railway 27.5kV single-phase copper core, it is characterized in that: described cable comprises conductor, conductor adopt three-layer co-extruded crosslinked unit once extrude conductor shield, insulating barrier, insulation screen, wrapped semi-conductive layer on insulation screen, semi-conductive layer is provided with copper strip shielding layer, this copper strip shielding layer by dredge around annealed copper wire and surface form with oppositely wrapped copper strips, copper strip shielding layer arranges double-deck waterstop lapping layer, double-deck waterstop lapping layer sets gradually aluminium-poly-bonding sheath, armour and external sheath layer.
2. the extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core according to claim 1, is characterized in that: described conductor adopts the 2nd kind strandedly to press circular copper conductors.
3. the extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core according to claim 1, it is characterized in that: described armour wrappedly to form by nonmagnetic aluminum-alloy wire is seamless, and aluminum-alloy wire direction of lay is contrary with the lapping direction of copper strip shielding layer.
4. the extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core according to claim 1, is characterized in that: described oversheath is the termite-proof polyolefin jacket of LSOH anti-flaming protection against rodents of modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322602.9U CN204596525U (en) | 2015-05-19 | 2015-05-19 | The extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322602.9U CN204596525U (en) | 2015-05-19 | 2015-05-19 | The extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core |
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| Publication Number | Publication Date |
|---|---|
| CN204596525U true CN204596525U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520322602.9U Active CN204596525U (en) | 2015-05-19 | 2015-05-19 | The extraordinary crosslinked cable of a kind of electric railway 27.5kV single-phase copper core |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683756A (en) * | 2016-11-11 | 2017-05-17 | 湖北龙腾红旗电缆(集团)有限公司 | Comprehensive protection-type medium-voltage subway cable |
| CN107393650A (en) * | 2017-06-23 | 2017-11-24 | 安徽华通电缆集团有限公司 | A kind of electric railway single-phase copper core flame-retardant refractory water-proof cable |
-
2015
- 2015-05-19 CN CN201520322602.9U patent/CN204596525U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683756A (en) * | 2016-11-11 | 2017-05-17 | 湖北龙腾红旗电缆(集团)有限公司 | Comprehensive protection-type medium-voltage subway cable |
| CN107393650A (en) * | 2017-06-23 | 2017-11-24 | 安徽华通电缆集团有限公司 | A kind of electric railway single-phase copper core flame-retardant refractory water-proof cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |