CN101661812B - Flexible electric power cable with steel-tape corrugated longitudinal wrapping armor layer - Google Patents
Flexible electric power cable with steel-tape corrugated longitudinal wrapping armor layer Download PDFInfo
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- CN101661812B CN101661812B CN2009100353962A CN200910035396A CN101661812B CN 101661812 B CN101661812 B CN 101661812B CN 2009100353962 A CN2009100353962 A CN 2009100353962A CN 200910035396 A CN200910035396 A CN 200910035396A CN 101661812 B CN101661812 B CN 101661812B
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Abstract
The invention relates to a flexible electric power cable with a steel-tape corrugated longitudinal wrapping armor layer, which comprises a jacket layer (7), an insulating wire core (9) and a filling layer (4), wherein the insulating wire core (9) is positioned in the jacket layer (7); the filling layer (4) is arranged between the jacket layer (7) and the insulating wire core; and a steel-tape corrugated longitudinal wrapping armor layer (6) is arranged between the jacket layer (7) and the filling layer (4) and is formed by superposing, overlapping and longitudinally wrapping at least two corrugated steel tapes along the longitudinal direction of the cable. The flexible electric power cable using the steel-tape corrugated longitudinal wrapping armor layer keeps the necessary flexibility of the electric power cable for indoor wiring and fundamentally solves the technical problem that the traditional steel-tape wrapping technique causes the cable to be hard.
Description
Technical field
The present invention relates to a kind of power cable; It specifically is a kind of multicore flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer; This cable is that communication power supply is used flexible electric power cable; The cable rated operational voltage is 450V/750V, 600/1000V, and this cable mainly is applicable to transmission of electricity, the distribution system of power supplys such as communication station and skyscraper.
Background technology
At present; The standard that domestic enterprise's manufacturing communication power supply is carried out with flame-retardant refractory flexible electric cable is YD/T1173-2001; It is wrapped promptly to adopt the thick flame-retardant refractory flexible electric cable of 0.2mm or 0.3mm to carry out double-deck gap with galvanized steel strip or flame-retardant refractory flexible electric cable with japanning steel band steel band; Its gap is no more than 50% of bandwidth, and interior lamellar spacing should be covered by skin.
This existing mode of production exists the defective that much can't overcome: 1, production efficiency is very low.Adopt double plate steel belt disk off-centre wrapped, because inertia is too big, so the equipment rotating speed can not be fast; Equipment revolves to turn around can only produce the long product of a width of steel band size at most.And the steel band work of continuing must be shut down and carried out.2, owing to be eccentric wrapped, the potential safety hazard in the course of processing is many.3, zinc-plated or japanning steel band all can produce the pollution problem of comparison serious environmental in the course of processing.4, the flexible cable after double-deck steel band is wrapped can become stone; Be difficult to bending; So the minimum bending radius that the YD/T1173-2001 standard can only regulation armouring type cable is 20 times of the outside diameter of cable; Do not carry out the cable of steel-tape armouring: the flame retardant type cable is 6 times of the outside diameter of cable, and the fire safe type cable is 12 times of the outside diameter of cable.Lost the necessary flexible nature of house wiring power cable.5, since at present steel-tape armouring be with dull and stereotyped steel band directly on cable core, so the lateral pressure resistant intensity of cable can be high.6, existing steel-tape armouring technology is provided with: be placed on the stranding operation, can strengthen the operation of stranding operation and the complexity of equipment like this; Form operation separately, many operations not only can increase cost, all are a kind of wastes to resource, management.
Based on the above practical problem that exists in the industry, need a kind of flexible electric power cable that has novel armour badly to replace the flexible electric power cable that adopts traditional around-packing technology armouring.So that each item performance index of flexible electric power cable meet the requirement of YD/T1173-2001 standard fully.
Summary of the invention
The object of the invention provides a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer, to overcome all drawbacks of the wrapped armour of two steel bands inclinations of Traditional use.
Technical scheme of the present invention is:
The steel-tape corrugated longitudinal wrapping armor layer that has the flexible electric power cable of steel-tape corrugated longitudinal wrapping armor layer of the present invention is made behind embossing, the vertical bag of overlap joint by the individual layer composite steel band, and carries out extruding of restrictive coating with the inner insulated wire cores of flexible electric power cable.
A kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer; Comprise restrictive coating, the insulated wire cores in restrictive coating and place restrictive coating and insulated wire cores between packed layer; Be provided with steel-tape corrugated longitudinal wrapping armor layer between said restrictive coating and the packed layer, steel-tape corrugated longitudinal wrapping armor layer is formed by the vertical bag of longitudinal overlap overlap joint of at least two embossing steel bands along cable.
Said steel-tape corrugated longitudinal wrapping armor layer and restrictive coating connect as one through extruding.
Said embossing pitch is 1 millimeter to 2 millimeters.
The steel band of said embossing steel band is a composite steel-plastic belt, and it is 0.03 millimeter to 0.07 millimeter polypropylene film that the tow sides of steel band all are covered with thickness.
The thickness of said steel band is 0.1 millimeter to 0.3 millimeter.
The thickness of said steel-tape corrugated longitudinal wrapping armor layer is 0.3 millimeter to 0.7 millimeter.
The overlapping width of said embossing steel band is more than or equal to 5 millimeters, and embossing steel band lap-joint is bonding through PUR.
Be provided with the cable inner covering between said packed layer and the steel-tape corrugated longitudinal wrapping armor layer.
Said insulated wire cores from-inner-to-outer is made up of soft copper conductor, core inner covering and insulating barrier successively.
The invention has the beneficial effects as follows:
1, steel band of the present invention is on the 0.2mm steel band, to carry out two-sided heat to cover polypropylene film, forms composite steel-plastic belt, so not only satisfies the anticorrosion problem of steel band, also can fundamentally solve the problem of environmental pollution of the existing steel band course of processing.
2, steel band thickness behind embossing increases, and makes that the lateral pressure resistant intensity of steel band can significantly improve behind the embossing, calculates and through actual test proof according to principle of science, and the lateral pressure resistant intensity of cable is brought up to original more than 1.5 times.
3, vertical job contract skill of steel band and sheath operation are combined; The speed of vertical bag armouring can be kept synchronously with sheath; Linear velocity can reach about 50m/min, is higher than the line speed about the 15m/min of traditional steel band around-packing technology far away, the very effective production efficiency that improved.
4, thoroughly eliminated because the rotation of the wrapped equipment of steel band and the potential safety hazard that machine inertia is produced.
5, adopt the flexible electric power cable of steel-tape corrugated longitudinal wrapping armor layer, kept the necessary flexibility of house wiring power cable.Minimum bending radius can reach 15 times of the outside diameter of cable, and the minimum bending radius of the flexible electric power cable of existing employing around-packing technology must be 20 times of the outside diameter of cable, has fundamentally solved the very hard technology difficult problem that traditional steel band around-packing technology becomes cable.
6, when producing steel-tape corrugated longitudinal wrapping armor layer, what equipment adopted is double plate steel band discharging gear release mechanism, and is equipped with the storage belting, can not shut down the steel band that continues, and realization is uninterrupted produces continuously, has further improved production efficiency.
7, the overlapping width requirement of steel-tape corrugated longitudinal wrapping armor layer is not less than 5mm, and uses the PUR bonding, guarantees that steel band lap-joint can not ftracture.
Description of drawings
Fig. 1 is the structural representation of the wrapped flexible electric power cable of the double-deck steel band of existing employing.
Fig. 2 is the structural representation that has the flexible electric power cable of steel-tape corrugated longitudinal wrapping armor layer of the present invention.
Fig. 3 is the local enlarged diagram of I among Fig. 2.
Fig. 4 is the schematic cross-section that has the flexible electric power cable of steel-tape corrugated longitudinal wrapping armor layer of the present invention.
Among the figure: 1 is that soft copper conductor, 2 is that core inner covering, 3 is that insulating barrier, 4 is that packed layer, 5 is that cable inner covering, 6 is that steel-tape corrugated longitudinal wrapping armor layer, 60 is that wrapped formula steel-tape armouring layer, 7 is that restrictive coating, 8 is that embossing, 9 is insulated wire cores.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Like Fig. 1, be the structural representation of the wrapped flexible electric power cable of the double-deck steel band of existing employing.The steel bands that its wrapped formula steel-tape armouring layer 60 is fitted by two stacks make through wrapped, and major defect is that wrapped back hardness is bigger, are difficult to bending, production efficiency is low.
The steel-tape corrugated longitudinal wrapping armor layer 6 that has the flexible electric power cable of steel-tape corrugated longitudinal wrapping armor layer of the present invention is made behind the vertical bag of embossing by two individual layer composite steel bands, and carries out extruding of restrictive coating with the inner insulated wire cores 11 of flexible electric power cable.
In conjunction with Fig. 2, Fig. 3, Fig. 4; A kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer; Comprise restrictive coating 7, the insulated wire cores in restrictive coating 79 and place the packed layer 4 between restrictive coating 7 and the insulated wire cores; Be provided with the vertical covering 6 of steel band embossing between said restrictive coating 7 and the packed layer 4, steel-tape corrugated longitudinal wrapping armor layer 6 is formed by the vertical bag of longitudinal overlap overlap joint of at least two embossing steel bands along cable.Overlapping width is not less than 5mm.
Steel-tape corrugated longitudinal wrapping armor layer 6 connects as one through extruding with restrictive coating 7.
Embossing 8 pitches are 1 millimeter to 2 millimeters, are preferably 1.5 millimeters.
The thickness of employed steel band is 0.1 millimeter to 0.3 millimeter, and the thickness of the steel band behind the embossing is 0.3 millimeter to 0.7 millimeter, is preferably 0.2 millimeter.Can confirm the width of steel band according to the cable conductor diameter.
The embossing steel band is a composite steel-plastic belt, and it is 0.03 millimeter to 0.07 millimeter polypropylene film that tow sides all are covered with thickness, and being preferably heat, to cover thickness be 0.05 millimeter polypropylene film.
The thickness of steel-tape corrugated longitudinal wrapping armor layer 6 is 0.3 millimeter to 0.7 millimeter, is preferably 0.5 millimeter, is 0.5 millimeter through its thickness of steel band behind the embossing promptly.
The overlapping width of embossing steel band is more than or equal to 5 millimeters, and embossing steel band lap-joint is bonding through PUR.
Be provided with cable inner covering 5 between packed layer 4 and the steel-tape corrugated longitudinal wrapping armor layer 6.
Manufacture craft of the present invention is following:
1, the following equipment of configuration on the sheath production line: two φ 800mm steel band discharging gear release mechanisms; A steel band storage belting, its storage strip length is greater than 60 meters; A steel band embossing calender, embossing pitch 1.5mm; And the vertical bag of steel band platform.
2, confirm width of steel band according to the actual parameter of cable core diameter;
3, the thickness of adjusting steel band embossing is to 0.5mm, and the uniformity of assurance embossing, avoids steel band sideslip in the running.
4, the technical parameter according to different product is equipped with vertical bag mould.
5, adjust vertical bag mould successively by technological requirement: preforming mould → seaming die → plug die makes it to satisfy the technical indicator of standard-required.
6 and the flexible cable cable core carry out sheath together and extrude, can under the batch process situation, guarantee product quality, produce qualified flexible cable product.
7, when steel band need continue, launch the storage belting, complete connection work under non-stop-machine situation realizes uninterrupted production continuously.
Claims (7)
1. flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer; Comprise restrictive coating (7), be positioned at the insulated wire cores (9) of restrictive coating (7) and place the packed layer (4) between restrictive coating (7) and the insulated wire cores; It is characterized in that being provided with steel-tape corrugated longitudinal wrapping armor layer (6) between said restrictive coating (7) and the packed layer (4), steel-tape corrugated longitudinal wrapping armor layer (6) is formed by the vertical bag of longitudinal overlap overlap joint of at least two embossing steel bands along cable; The steel band of said embossing steel band is a composite steel-plastic belt, and it is 0.03 millimeter to 0.07 millimeter polypropylene film that the tow sides of steel band all are covered with thickness; The thickness of said steel band is 0.1 millimeter to 0.3 millimeter.
2. a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer according to claim 1 is characterized in that said steel-tape corrugated longitudinal wrapping armor layer (6) and restrictive coating (7) connect as one through extruding.
3. a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer according to claim 1 is characterized in that said embossing (8) pitch is 1 millimeter to 2 millimeters.
4. a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer according to claim 1, the thickness that it is characterized in that said steel-tape corrugated longitudinal wrapping armor layer (6) are 0.3 millimeter to 0.7 millimeter.
5. a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer according to claim 1 is characterized in that the overlapping width of said embossing steel band more than or equal to 5 millimeters, and embossing steel band lap-joint is bonding through PUR.
6. a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer according to claim 1 is characterized in that being provided with cable inner covering (5) between said packed layer (4) and the steel-tape corrugated longitudinal wrapping armor layer (6).
7. a kind of flexible electric power cable that has steel-tape corrugated longitudinal wrapping armor layer according to claim 1 is characterized in that said insulated wire cores (11) from-inner-to-outer is made up of soft copper conductor (1), core inner covering (2) and insulating barrier (3) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100353962A CN101661812B (en) | 2009-09-27 | 2009-09-27 | Flexible electric power cable with steel-tape corrugated longitudinal wrapping armor layer |
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| CN2009100353962A CN101661812B (en) | 2009-09-27 | 2009-09-27 | Flexible electric power cable with steel-tape corrugated longitudinal wrapping armor layer |
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| CN101661812A CN101661812A (en) | 2010-03-03 |
| CN101661812B true CN101661812B (en) | 2012-04-18 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770838B (en) * | 2010-03-18 | 2011-05-04 | 天津经纬电材股份有限公司 | Eccentric winding mechanism of glass fiber covered wires |
| CN102347101A (en) * | 2010-08-02 | 2012-02-08 | 江苏俊知技术有限公司 | Fire-resistant multi-core flexible cable for communication power supply |
| CN101984368A (en) * | 2010-12-10 | 2011-03-09 | 成都康宁光缆有限公司 | Cable with ratproof function |
| CN104575838A (en) * | 2014-12-12 | 2015-04-29 | 长兴优联马科技有限公司 | High-temperature-resistant and corrosion-resistant cable |
| CN106125216B (en) * | 2016-07-01 | 2023-06-23 | 江苏亨通光电股份有限公司 | High-grade flame-retardant fire-resistant optical cable |
| CN108806856B (en) * | 2018-07-21 | 2023-11-17 | 江苏东强股份有限公司 | High-efficiency fire-resistant heat-dissipation cable |
| CN112466527A (en) * | 2020-11-18 | 2021-03-09 | 安徽神华特种线缆有限公司 | Copper-core polyvinyl chloride insulating single-core wire and preparation method thereof |
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Owner name: JIANGSU TRIGIANT OPTICAL COMMUNICATION CO., LTD. Effective date: 20130110 |
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Effective date of registration: 20130110 Address after: 214206 Jiangsu city of Yixing province huankeyuan Jun Zhilu No. 1 Patentee after: Jiangsu Trigiant Technology Co., Ltd. Patentee after: Jiangsu Trigiant Optoelectronic Technology Co., Ltd. Address before: 214206 Jiangsu city of Yixing province huankeyuan Jun Zhilu No. 1 Patentee before: Jiangsu Trigiant Technology Co., Ltd. |