CN204732216U - A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable - Google Patents
A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable Download PDFInfo
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- CN204732216U CN204732216U CN201520418284.6U CN201520418284U CN204732216U CN 204732216 U CN204732216 U CN 204732216U CN 201520418284 U CN201520418284 U CN 201520418284U CN 204732216 U CN204732216 U CN 204732216U
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- power cable
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Abstract
A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable, belongs to power cable technical field.Cable core is made up of conductor, composite insulation layer, and composite insulation layer is provided with composite shielding layer, three-in-one complex waterproof layer, comprehensive flame-retardant layer, protection against rodents protective layer, the high flame retardant coat of paint outward successively; Described three-in-one complex waterproof layer is made up of the belting layer that blocks water, plastic-aluminum combined belt, low smoke halogen-free flame-retardant polyolefin layer.The utility model, while meeting product electric property, mechanical performance, improves the reasonable structure of product, stability, imparts the fire-retardant of cable excellence and water resistance.
Description
Technical field
The utility model relates to a kind of structure of power cable, and especially a kind of structure of novel environment friendly halogen, low smoke A-class flame subway main line power cable, belongs to power cable technical field.
Background technology
Along with the quickening of Urbanization in China, the wealth of society of urban agglomerations and population get more and more, and urban transport problems becomes increasingly conspicuous.Subway, as a kind of mode of track traffic, accounts for street area hardly, does not also disturb traffic above-ground, it with safety, speed is fast, punctuality rate is high, the significantly advantage such as low in the pollution of the environment obtains significant development very soon.The fast development of metro project also brings huge market to cable industry, and the stube cable demand of subway looped network electric substation increases day by day.Meanwhile, along with passage of time, scientific progress, the construction of each large subway projects is more and more advanced, and awareness of safety is more and more stronger, and to the cable needs laid, also when the river rises the boat goes up thereupon.
Utility model content
The purpose of this utility model is for above situation, provides a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable.The connection of this cable both coincidently between iron hoop net electric substation needs, and can meet again water resistant tree, high flame retardant, block water, the extremely requirement such as low cigarette, low toxicity, antiultraviolet, rat-and-ant proof.
The purpose of this utility model is achieved through the following technical solutions: a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable, comprise cable core and oversheath, it is characterized in that, described cable core is by conductor, the composite insulation layer be extruded in outside conductor is formed, be provided with outside composite insulation layer and dredged around screen by copper wire, the composite shielding layer that copper strips gap lapped shielding layer is formed, three-in-one complex waterproof layer is provided with outside composite shielding layer, high-flame retardant fire-insulating layer is provided with outside three-in-one complex waterproof layer, the comprehensive flame-retardant layer that the high flame retardant coat of paint is formed, comprehensive flame-retardant layer is provided with protection against rodents protective layer outward successively, the high flame retardant coat of paint, described oversheath adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material to make, and be extruded in outside the high flame retardant coat of paint, described three-in-one complex waterproof layer is made up of the belting layer that blocks water, plastic-aluminum combined belt, low smoke halogen-free flame-retardant polyolefin layer.
Described composite insulation layer is made up of the conductor shield set gradually outside conductor, insulating barrier, insulation screen.
Described conductor shield, insulating barrier, insulation screen adopt three-layer co-extruded shaping.
Described protection against rodents protective layer adopts brass band sheathed structure.
Semiconductive belting layer is provided with between described composite insulation layer and composite shielding layer.
Containing Firebrake ZB material in the described high flame retardant coat of paint.
Conductor single line of the present utility model adopts " double end " big drawing machine to carry out wire drawing and annealing, and after making wire drawing and annealing, wire diameter and elongation are comparatively unified, stablized, and have ensured the production of cable conductor single line.This conductor twisted wire production equipment adopts frame wire twisting equipment, adopts Moving plate Setting-out Technique, stepless speed regulation, product uniform external diameter, and pitch is consistent, Stability Analysis of Structures.Large size conductor adopts 61 dish cage cablers regular stranded, and adopts sizing die strand conductor to carry out certain pressing and school circle, prevents strand wire jumper.
Cable insulation adopts three-layer co-extruded technology, and the diameter measurer be configured with, realizes on-line measurement, and speed of production is fast, constant product quality.A series of crosslinked parameters such as working temperature when determining crosslinked according to insulation cross-linking properties, thickness of insulating layer and speed of production, ensure that insulation obtains full cross-linked, ensure electric property and the mechanical performance of cable insulation.Advanced production equipment and strict technology controlling and process ensure that the uniformity of insulation and shielding, and concentricity can be controlled within 5%, to guarantee that field intensity is even, and then ensure superior electric property.
The utility model adopts copper wire to dredge the composite shielding mode wrapped around+copper strips gap.Conventional copper strips is put up wrapped, and when cable runs, metallic shield interlayer is due to its contact-making surface generation oxide, and decreases contact after bending cold and hot distortion, contact resistance can be caused to be multiplied, affect the capacity of short circuit current and the conducting of short circuit current.Flexural deformation of expanding with heat and contract with cold is added in loose contact, will coup injury outer semiconducting layer, causes cable partial discharge hydraulic performance decline like this by being very easy to.And the structure that the utility model adopts do not have copper strips put up between oxide layer, flexural deformation is little, and thermal expansion deformation is also few, and contact resistance is unlikely to be multiplied, and all such situations are all conducive to improving electrical property, mechanical performance and the hot property of running cable.Meanwhile, copper wire is dredged the composite construction wrapped around+copper strips gap and is made metal screen layer sectional area comparatively large, and therefore the ability of cable carrying short circuit current also obtain very big enhancing.
The in use maximum hazardous substance of reasonable in design, up-to-standard cable is exactly water, once cable water inlet, the life-span of cable becomes geometric format to decline exactly.Therefore the key that waterproof construction is whole cable manufacturing process how is designed.The compound waterproof process that the utility model adopts the band+aluminium-plastic tape+low smoke halogen-free flame-retardant polyolefin that blocks water to combine.This structural design is rigorous, can prevent moisture radial direction from stretching completely.Compared with traditional aluminium embossed sheath water-proof cable, aluminium embossed sheath cable not only cost is high, and the production cycle is longer.And this three-in-one composite water-proof structural cable relative low price, convenient for production, common plastic extruder can meet.Meanwhile, in configuration aspects, this composite water-proof structural cable bending radius is less, this ensures the advantage all having aluminium embossed sheath cable incomparable in transporting or laying.
Cable fire-retardant in, the utility model devises the comprehensive flame retarding construction that high-flame retardant fire-insulating layer+high flame retardant coat of paint is laid equal stress on.On the basis that sheath adopts halogen-free and low-smoke flame-retardant polyolefin material to extrude, outside three-in-one complex waterproof layer, extrude one deck high-flame retardant fire-insulating layer, the mode that the multiple flame retarding process structure of then adding the high flame retardant coat of paint outward at refuge floor combines.
At present, the composite water blocking structure of cable is aluminium-plastic tape+pe sheath combination.But due to the characteristic of polyethylene itself: oxygen index is low, easy firing, and can produce molten drop during burning.Which results in polyethylene is that the cable extruding layer is difficult under the prerequisite guaranteeing cable waterproof by category-A bunchy testing vertical flammability.Through kinds of processes structure imagine and give test and after tens of category-A bunched burning tests, the utility model release first aluminium-plastic tape+low smoke halogen-free flame-retardant polyolefin combine composition improvement version composite water-proof structure.Simultaneously, through repeatedly groping in the high flame retardant coat of paint structure designed distinctive Firebrake ZB as the synergistic fire retardant of AL (OH) 3 and antismoke agent, a large amount of heat energy can be absorbed and crystallization when being heated, generate B203 and be attached to cable surface, play heat insulation oxygen barrier, and the effusion of carbon granules black smoke can be prevented.
Experiment proves, the utility model extrudes on the basis of sheath with halogen-free and low-smoke flame-retardant polyolefin material, the comprehensive flame retarding process structure that high-flame retardant fire-insulating layer+high flame retardant coat of paint is laid equal stress on, and when combustion experiment, cable carbonization is highly low, fire resistance is high, can pass through category-A bunchy testing vertical flammability smoothly.
Protection against rodents protective layer of the present utility model adopts brass band sheathed structure, and brass band price is low, speed of production fast, and its hardness is higher, can prevent the toys such as muroid from biting preferably.Meanwhile, brass band also has certain metallic shield performance, suitably can improve the shield effectiveness of cable.
Due to metro environment opposing seal, flow of the people is large again, therefore the fail safe of cable design is had higher requirement, the utility model adopts environment protection, rat ant, the halogen-free and low-smoke flame-retardant polyolefin sheathed material of antiultraviolet, this protective cover material does not add harmful additive, during burning, amount of smoke is low, and toxicity is little, meets the requirement of metro environment high security completely.Sheath adopts and extrudes pattern, regulates line speed and extrusion temperature by reasonably arranging, and ensures that the mechanical performance of sheath meets the requirement of subway main line power cable layer.
The utility model is by rigorous structural design and strict technology controlling and process, make this subway main line power cable while meeting product electric property, mechanical performance, improve the reasonable structure of product, stability, impart the fire-retardant of cable excellence and water resistance.Because this type of cable service condition is more special, the project organization of this cable both comprised waterproof construction, comprised again fire-retardant application specific architecture, and the fire-retardant of cable and water resistance are improved greatly, ensure that the fail safe that cable uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1 conductor, 2 conductor shields, 3 insulating barriers, 4 insulation screens, 5 semiconductive belting layers, 6 copper wires are dredged around screen, 7 copper strips gap lapped shielding layers, 8 three-in-one complex waterproof layers, 9 high-flame retardant fire-insulating layers, the 10 high flame retardant coats of paint, 11 protection against rodents protective layers, the 12 high flame retardant coats of paint, 13 oversheaths.
Embodiment
A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable, its cable core is made up of conductor 1, the composite insulation layer be extruded in outside conductor, composite insulation layer is made up of the conductor shield 2 set gradually outside conductor, insulating barrier 3, insulation screen 4, and conductor shield, insulating barrier, insulation screen adopt three-layer co-extruded shaping.
Be provided with outside composite insulation layer and dredge by copper wire the composite shielding layer formed around screen 6, copper strips gap lapped shielding layer 7, be provided with three-in-one complex waterproof layer 8 outside composite shielding layer, three-in-one complex waterproof layer is made up of the belting layer that blocks water, plastic-aluminum combined belt, low smoke halogen-free flame-retardant polyolefin layer.
The comprehensive flame-retardant layer of high-flame retardant fire-insulating layer 9, the high flame retardant coat of paint 10 formation is provided with outside three-in-one complex waterproof layer; comprehensive flame-retardant layer is provided with protection against rodents protective layer 11, the high flame retardant coat of paint 12 outward successively; protection against rodents protective layer adopts brass band sheathed structure, containing Firebrake ZB material in the high flame retardant coat of paint.
Be provided with semiconductive belting layer 5 between composite insulation layer and composite shielding layer, oversheath 13 adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material to make, and is extruded in outside the high flame retardant coat of paint 12.
Product structure innovative point of the present utility model is as follows:
1, composite shielding layer
Because service condition is harsh, cable is higher and requirement for cable metallic screens layer earth short circuit current is also higher for the requirement of metallic shield.In order to meet above-mentioned requirements, this cable adopts copper wire to dredge the composite shielding mode wrapped around+copper strips gap.
Because the electric pressure of cable is higher, its high voltage environment requires height very for the Electric Field Distribution between cable conductor, insulation, metallic shield, the requirement that this structure can meet electric fields uniform completely makes cable have stronger carrying short circuit current ability simultaneously, can ensure that cable conductor is in electric circumstance that is metastable, that close, ensure the safe and stable operation of conductor.
2, three-in-one complex waterproof layer
The complex waterproof layer adopting the band+aluminium-plastic tape+halogen-free and low-smoke flame-retardant polyolefin that blocks water to combine can meet the waterproof requirement needed for cable.Because aluminium-plastic tape seal degree is high, cable core internal layer is wrapped up completely, cause moisture to pass through.
3, comprehensive flame-retardant layer
In order to meet waterproof at cable prerequisite under, category-A bunchy testing vertical flammability can be passed through smoothly, to meet cable-flame retardant performance requirement, adopt at sheath on the basis of halogen-free and low-smoke flame-retardant polyolefin material, adopt the comprehensive flame retarding process structure that high-flame retardant fire-insulating layer+high flame retardant coat of paint combines.This structural design is advanced, and technique is rigorous, convenient for production.
Claims (6)
1. a novel environment friendly halogen, low smoke A-class flame subway main line power cable, comprise cable core and oversheath (13), it is characterized in that, described cable core is by conductor (1), the composite insulation layer be extruded in outside conductor is formed, be provided with outside composite insulation layer and dredged around screen (6) by copper wire, the composite shielding layer that copper strips gap lapped shielding layer (7) is formed, three-in-one complex waterproof layer (8) is provided with outside composite shielding layer, high-flame retardant fire-insulating layer (9) is provided with outside three-in-one complex waterproof layer, the comprehensive flame-retardant layer that the high flame retardant coat of paint (10) is formed, comprehensive flame-retardant layer is provided with protection against rodents protective layer (11) outward successively, the high flame retardant coat of paint (12), described oversheath adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material to make, and be extruded in the high flame retardant coat of paint (12) outward, described three-in-one complex waterproof layer is made up of the belting layer that blocks water, plastic-aluminum combined belt, low smoke halogen-free flame-retardant polyolefin layer.
2. a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable according to claim 1, it is characterized in that, described composite insulation layer is made up of the conductor shield set gradually outside conductor (2), insulating barrier (3), insulation screen (4).
3. a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable according to claim 2, is characterized in that, described conductor shield, insulating barrier, insulation screen adopt three-layer co-extruded shaping.
4. a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable according to claim 1, is characterized in that, described protection against rodents protective layer adopts brass band sheathed structure.
5. a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable according to claim 1, is characterized in that, be provided with semiconductive belting layer (5) between described composite insulation layer and composite shielding layer.
6. a kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable according to claim 1, is characterized in that, containing Firebrake ZB material in the described high flame retardant coat of paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520418284.6U CN204732216U (en) | 2015-06-17 | 2015-06-17 | A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520418284.6U CN204732216U (en) | 2015-06-17 | 2015-06-17 | A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204732216U true CN204732216U (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520418284.6U Expired - Fee Related CN204732216U (en) | 2015-06-17 | 2015-06-17 | A kind of novel environment friendly halogen, low smoke A-class flame subway main line power cable |
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| Country | Link |
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| CN (1) | CN204732216U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876001A (en) * | 2017-04-24 | 2017-06-20 | 河北华通线缆集团股份有限公司 | A kind of Double-layer flame-retardant humidity environmental communication cable and its production technology |
| CN107135619A (en) * | 2016-02-29 | 2017-09-05 | 特乐斯特机械(上海)有限公司 | A kind of container-type electrical control cabinet |
| CN109599213A (en) * | 2018-10-25 | 2019-04-09 | 江苏亨通电力电缆有限公司 | American Standard is without the insulation midium voltage cable of partial discharge second third |
| CN110136886A (en) * | 2019-05-09 | 2019-08-16 | 安徽龙庵电缆集团有限公司 | A kind of production method of resistant tensile anti-corrosion flexible cable |
-
2015
- 2015-06-17 CN CN201520418284.6U patent/CN204732216U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135619A (en) * | 2016-02-29 | 2017-09-05 | 特乐斯特机械(上海)有限公司 | A kind of container-type electrical control cabinet |
| CN107135619B (en) * | 2016-02-29 | 2023-09-19 | 特乐斯特机械(上海)有限公司 | Container formula electrical control cabinet |
| CN106876001A (en) * | 2017-04-24 | 2017-06-20 | 河北华通线缆集团股份有限公司 | A kind of Double-layer flame-retardant humidity environmental communication cable and its production technology |
| CN109599213A (en) * | 2018-10-25 | 2019-04-09 | 江苏亨通电力电缆有限公司 | American Standard is without the insulation midium voltage cable of partial discharge second third |
| CN110136886A (en) * | 2019-05-09 | 2019-08-16 | 安徽龙庵电缆集团有限公司 | A kind of production method of resistant tensile anti-corrosion flexible cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20210617 |