CN109686505B - Preparation method of compacted and segmented conductor - Google Patents
Preparation method of compacted and segmented conductor Download PDFInfo
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- CN109686505B CN109686505B CN201811425176.6A CN201811425176A CN109686505B CN 109686505 B CN109686505 B CN 109686505B CN 201811425176 A CN201811425176 A CN 201811425176A CN 109686505 B CN109686505 B CN 109686505B
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- strand block
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0285—Pretreatment
Abstract
The invention discloses a preparation method of a compressed segmented conductor, which comprises the following steps: 1) preparing a layering scheme according to the target sectional area; 2) drawing, annealing and pressing to obtain an inner core; 3) pressing the wire-drawing copper conductor into a sheet, coating the sheet on an inner core to form an outer layer, and sequentially coating to obtain a fan-shaped strand block conductor; 4) the five fan-shaped strand block conductors are cabled into a round shape and are compressed to divide the conductors, and a PVC protective belt is wrapped after the conductors are wrapped and fixed by a semi-conductive wrapping belt. The preparation method of the compressed split conductor can effectively reduce the phenomena of flash, explosion angle and the like of the compressed conductor, can improve the compression coefficient of the conductor, can effectively reduce the outer diameter of the conductor, has better axial stretching rate between the outer layer and the inner core of the compressed conductor, and has more uniform conductivity after cabling.
Description
Technical Field
The invention relates to the technical field of wires and cables, in particular to a large-section compacted split conductor and a manufacturing method thereof.
Background
With the rapid development of national economy and the increasing demand of electric power, the transmission capacity of a line can be effectively improved by adopting a conductor with a large cross section, after the cross section of the lead is increased, the resistance of the lead per unit length is reduced, and the allowable current-carrying capacity of the lead is increased within the limit of thermal capacity, so that the transmission power of the lead is improved.
However, the transmission capacity of the conductor does not increase linearly with the increase of the cross section of the conductor, the conductor is influenced by the skin effect and the proximity effect in the process of transmitting alternating current, the phenomenon is more obvious as the cross section of the conductor increases, and the cross section of the conductor is clearly specified to be 800mm in the industry standard2The above cable conductor must adopt a split conductor structure (800 mm)2A compact round or segmented conductor structure may be employed) to reduce the "skin effect" that causes power loss during cable conductor transmission.
The existing segmented conductor structure mainly uses a round monofilament copper wire to be stranded into a fan-shaped strand block conductor, and the fan-shaped strand block conductor manufactured by the manufacturing method has the defects of low compression coefficient or conductor flash and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation method of a compacted split conductor which has a high compaction coefficient and is not easy to flash.
The purpose of the invention is realized by adopting the following technical scheme:
the preparation method of the compacted split conductor comprises the following steps:
1) calculating the diameter according to the target sectional area of the conductor of the to-be-manufactured fan-shaped strand block, and drawing up a layering scheme:
160-200mm2the strand block conductor is divided into an inner layer and an outer layer which are added with 2 outer layers; 200-300mm2The strand block conductor is divided into an inner core and 3 outer layers; 300-400mm2The strand block conductor is divided into an inner core and 4 outer layers; 400-500mm2The strand block conductor is divided into an inner core and 5 outer layers;
the sectional areas of the conductor layers are equal, the included angle of the fan-shaped strand block conductors from the outside to the inside is decreased gradually from 1 degree to 2 degrees, and the included angle of the outermost layer conductor is 72 degrees;
2) taking a copper conductor conforming to the national standard as a raw material, carrying out wire drawing and annealing treatment, and pressing into a fan-shaped strand block conductor as an inner core;
3) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, coating the sheet on the inner core obtained in the step 2), and pressing the outer layer tightly to obtain a first outer layer;
4) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into sheets, sequentially covering the sheets on the first outer layer, and pressing the sheets until the edges of the sheets are spliced to obtain a fan-shaped strand block conductor with a specified sectional area;
5) and 4) cabling the fan-shaped strand block conductors obtained in the step 4) by using an insulating interlayer, and wrapping a protective tape after fixing a wrapped semi-conductive tape during cabling to obtain the compressed segmented conductors.
Further, in the step 1), the included angle of the sector strand block conductors from the outside to the inside is decreased progressively by 1.5 degrees.
Further, in step 4), the chip copper conductor is connected in the non-arc-shaped edge area.
Further, in the step 4), the joint of the two adjacent layers of copper conductors is staggered.
Further, in the step 4), the insulating interlayer is insulating paper.
Further, the insulating interlayer is a folded insulating interlayer.
Further, in step 4), the protective tape is a PVC protective tape.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a manufacturing method of a compressed and segmented conductor, which is characterized in that a fan-shaped strand block conductor with thick inside and thin outside and difficult flash is formed by compression in a mode of increasing the sectional area; when the sectional area is increased progressively, the conductor of a quantitative unit can be directly used for coating the inner conductor, the axial stretching rates of the inner layer and the outer layer are equal, the current is uniform, the inner conductor is thick, the outer conductor is thin, and the edge explosion pressure is small during coating; the conductors of the fan-shaped strand blocks are mutually insulated and have no interference by using the insulating interlayers for spacing the conductor strand blocks of the fan-shaped strand blocks, so that the skin effect can be effectively reduced, and the obtained compacted and segmented conductor has better electrical and mechanical properties.
Drawings
FIG. 1 is a schematic view of a conductor structure of a fan-shaped strand block of embodiment 2;
fig. 2 is a schematic view of a compressed segmented conductor structure according to example 2.
In the figures, the various reference numbers: 1. a kernel; 2. a first outer layer; 3. a second outer layer; 4. a third outer layer; 5. an insulating barrier layer; 6. a semiconductive tape; 7. provided is a protective tape.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
The invention provides a preparation method of a compressed segmented conductor, which comprises the following steps:
1) calculating the diameter according to the target sectional area of the conductor of the to-be-manufactured fan-shaped strand block, and drawing up a layering scheme:
160-200mm2the strand block conductor is divided into an inner layer and an outer layer which are added with 2 outer layers; 200-300mm2The strand block conductor is divided into an inner core and 3 outer layers; 300-400mm2The strand block conductor is divided into an inner core and 4 outer layers; 400-500mm2Is divided into inner sectionsCore plus 5 outer layers;
the sectional areas of the conductor layers are equal, the included angle of the fan-shaped strand block conductors from the outside to the inside is decreased gradually from 1 degree to 2 degrees, and the included angle of the outermost layer conductor is 72 degrees;
2) taking a copper conductor conforming to the national standard as a raw material, carrying out wire drawing and annealing treatment, and pressing into a fan-shaped strand block conductor as an inner core;
3) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, coating the sheet on the inner core obtained in the step 2), and pressing the outer layer tightly to obtain a first outer layer;
4) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into sheets, sequentially covering the sheets on the first outer layer, and pressing the sheets until the edges of the sheets are spliced to obtain a fan-shaped strand block conductor with a specified sectional area;
5) and 4) cabling the fan-shaped strand block conductors obtained in the step 4) by using an insulating interlayer, and wrapping a protective tape after fixing a wrapped semi-conductive tape during cabling to obtain the compressed segmented conductors.
Firstly, drawing up a layering scheme by the target sectional area of a conductor of a to-be-manufactured fan-shaped strand block, and drawing up the dividing modes of a plurality of outer layers of a kernel, wherein the sectional areas of all the layers are approximately the same; and carrying out wire drawing and extending treatment on the copper conductor, pressing into a core, pressing an outer layer into a sheet, coating the sheet on the core, and pressing to connect the sheet conductors through pressure. The core-shell type compressed conductor prepared by the method effectively solves the problems of corner edge explosion and the like, and improves the compressed coefficient of the conductor. The sector strand conductors from the outside to the inside decrease at an included angle of 1.5 degrees. The angle is matched with the cross section of two adjacent conductors, so that the pressing efficiency is highest. To obtain a uniform outer layer, the sheet-like copper conductor may further be joined at non-arcuate edge regions. For improving the connection tightness of each layer during multilayer cladding, no overlapping is adopted, the gap is zero, and the wrapping can be further carried out, in the step 4), the joint of the two adjacent layers of copper conductors is staggered, the wrapping directions of the two adjacent layers of copper conductors are opposite, and the outermost layer of wrapping mode is left-handed.
Example 1:
the cross section area is 800mm2The method for preparing the compacted divided conductor comprises the following stepsThe method comprises the following steps:
1) a layering scheme is drawn up: layering in a mode of coating an inner core with 2 layers; the cross-sectional area of the inner core is 160/3mm2(ii) a The cross-sectional area of the first outer layer is 160/3mm2(ii) a The cross-sectional area of the second outer layer is 160/3mm2(ii) a The included angle of the inner core is 69 degrees, and the included angle of the first outer layer is 70 degrees and 30 degrees; the included angle of the second outer layer is 72 degrees;
2) taking a copper conductor conforming to the national standard as a raw material, carrying out wire drawing and annealing treatment, and pressing into a fan-shaped strand block conductor as an inner core;
3) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, coating the sheet on the inner core obtained in the step 2), and pressing the outer layer tightly to obtain a first outer layer;
4) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into sheets, sequentially covering the sheets on the first outer layer, and pressing the sheets until the edges of the sheets are spliced to obtain a fan-shaped strand block conductor with a specified sectional area;
5) insulating and stranding the sector strand block conductor obtained in the step 4) to obtain 800mm2And (3) compressing and dividing the conductor, fixing the conductor around a winding semi-conductive tape during cabling, and preventing moisture and fouling of the PVC protective tape.
Example 2
The cross section area is 1200mm2The preparation method of the compacted split conductor comprises the following steps:
1) a layering scheme is drawn up: layering in a mode of coating an inner core by 1 layer and 3 layers; the cross section area of the inner core 1 is 60mm2(ii) a The first outer layer 2 has a cross-sectional area of 60mm2(ii) a The cross-sectional area of the second outer layer 3 is 60mm2(ii) a The third outer layer 4 has a cross-sectional area of 60mm2(ii) a The included angle of the inner core 1 is 67 degrees and 30 degrees; the included angle of the first outer layer 2 is 69 degrees, and the included angle of the second outer layer 3 is 70 degrees and 30 degrees; the included angle of the third outer layer 4 is 72 degrees;
2) taking a copper conductor meeting the national standard as a raw material, carrying out wire drawing and annealing treatment, and pressing into a fan-shaped strand block conductor as an inner core 1;
3) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, coating the sheet on the inner core 1 obtained in the step 2), and compacting the outer layer to obtain a first outer layer 2; then coating the first outer layer 2 and compressing to obtain a second outer layer 3; then coating the second outer layer 3 and compressing to obtain a third outer layer 4, and obtaining a fan-shaped strand block conductor with a specified cross section; the structure is shown in figure 1 of the drawings,
4) cabling is carried out on the fan-shaped strand block conductor obtained in the step 3) and the wrinkled insulating paper as an insulating interlayer 5, the conductor is fixed by wrapping a semi-conductive wrapping tape 6 during cabling, and meanwhile, a PVC (polyvinyl chloride) protective tape 7 is wrapped to prevent moisture and dirt, so that 1200mm conductor cable is obtained2The split conductor is compacted and the structure is shown in fig. 2.
Example 3
As shown in FIG. 1, the cross-sectional area is 2500mm2The preparation method of the compacted split conductor comprises the following steps:
1) a layering scheme is drawn up: layering in a mode of coating an inner core with 4 layers; the cross-sectional area of the inner core 1 is 500/6mm2(ii) a The first to fourth layers were also each 500/6mm2(ii) a The included angle of the inner core is 64 degrees and 30'; the included angles from the first outer layer to the outermost layer are 66 degrees, 67 degrees, 30 degrees, 69 degrees, 70 degrees, 30 degrees and 72 degrees respectively;
2) taking a copper conductor conforming to the national standard as a raw material, carrying out wire drawing and annealing treatment, and pressing into a fan-shaped strand block conductor as an inner core;
3) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, coating the sheet on the inner core obtained in the step 2), and pressing the outer layer tightly to obtain a first outer layer; then coating the first outer layer and compressing to obtain a second outer layer; coating the second outer layer and compacting to obtain a third outer layer, coating the third outer layer and compacting to obtain a fourth outer layer with the thickness of 500mm2A fan-shaped strand block conductor of cross-sectional area;
4) stranding the fan-shaped strand block conductor obtained in the step 3) with fold insulating paper, fixing the strand block conductor around a semi-conductive wrapping tape during stranding, and meanwhile, preventing moisture and fouling of the strand block conductor around a PVC protective tape to obtain 2500mm2The split conductor is compressed.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (7)
1. The preparation method of the compacted and segmented conductor is characterized by comprising the following steps of:
1) calculating the diameter according to the target sectional area of the conductor of the to-be-manufactured fan-shaped strand block, and drawing up a layering scheme:
160-200mm2the strand block conductor is divided into an inner core and 2 outer layers; 200-300mm2The strand block conductor is divided into an inner core and 3 outer layers; 300-400mm2The strand block conductor is divided into an inner core and 4 outer layers; 400-500mm2The strand block conductor is divided into an inner core and 5 outer layers; the sectional areas of the conductor layers are equal, the included angle of each layer from outside to inside is decreased gradually at 1-2 degrees, and the included angle of the outermost conductor is 72 degrees;
2) taking a copper conductor conforming to the national standard as a raw material, carrying out wire drawing and annealing treatment, and pressing into a fan-shaped strand block conductor as an inner core;
3) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, coating the sheet on the inner core obtained in the step 2), and pressing the outer layer tightly to obtain a first outer layer;
4) hot-pressing the copper conductor subjected to wire drawing and annealing in the step 2) into a sheet, sequentially coating the sheet on the first outer layer, and pressing the fan-shaped strand block conductor coated on the first outer layer to the edge for splicing to obtain a fan-shaped strand block conductor with a specified cross section;
5) and 4) cabling the fan-shaped strand block conductors obtained in the step 4) by using an insulating interlayer, and wrapping a protective tape after fixing a wrapped semi-conductive tape during cabling to obtain the compressed segmented conductors.
2. The method of claim 1, wherein in step 1), the angle between the outer and inner conductors of the segmented conductor decreases by 1.5 °.
3. The method of manufacturing a compacted divided conductor according to claim 1, wherein in step 4), the copper conductors are joined in non-arc-shaped edge regions.
4. The method of claim 3, wherein in step 4), the joint between two adjacent layers of copper conductors is dislocated.
5. The method of manufacturing a compacted divided conductor according to claim 1, wherein in step 4), the insulating interlayer is insulating paper.
6. The method of making a compacted split conductor of claim 5, wherein the insulating interlayer is a corrugated insulating interlayer.
7. The method of manufacturing a compacted divided conductor according to claim 1, wherein in the step 4), the protective tape is a PVC protective tape.
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| CN201811425176.6A CN109686505B (en) | 2018-11-27 | 2018-11-27 | Preparation method of compacted and segmented conductor |
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| CN201811425176.6A CN109686505B (en) | 2018-11-27 | 2018-11-27 | Preparation method of compacted and segmented conductor |
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| CN109686505B true CN109686505B (en) | 2021-02-26 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4866545B2 (en) * | 2004-12-03 | 2012-02-01 | 株式会社フジクラ | Cable and twisted cable |
| CN203102994U (en) * | 2013-01-19 | 2013-07-31 | 盘锦通发线缆有限公司 | Copper-clad aluminum conductor extruded insulation power cable with rated voltage of 1 kV |
| EP2141709A3 (en) * | 2008-07-02 | 2013-09-25 | nkt cables GmbH | Electrical sector cable of the Milliken-type |
| JP2014056714A (en) * | 2012-09-12 | 2014-03-27 | Viscas Corp | Element wire insulation segmentation conductor for power cable |
| CN106782892A (en) * | 2017-01-13 | 2017-05-31 | 杭州华新电力线缆有限公司 | A kind of preparation method and equipment of milliken conductor stock block |
| CN206210435U (en) * | 2016-10-08 | 2017-05-31 | 贵州德通电线电缆制造有限公司 | Fire-retardant fireproof cable |
| DE102016004552A1 (en) * | 2016-04-15 | 2017-10-19 | Waskönig+Walter Kabel-Werk GmbH u. Co. KG | Cables, in particular high-performance power cables |
| CN107507659A (en) * | 2017-07-10 | 2017-12-22 | 南京航空航天大学 | The forming method of SPL in a kind of low blast wire and the low blast wire |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11329100A (en) * | 1998-05-18 | 1999-11-30 | Fujikura Ltd | Compact power cable |
| CN202650593U (en) * | 2012-07-10 | 2013-01-02 | 加铝（天津）铝合金产品有限公司 | Cable |
| CN203276940U (en) * | 2013-04-27 | 2013-11-06 | 远东电缆有限公司 | Six-segmentation copper core conductor with sectional area of 3000 mm<2> |
-
2018
- 2018-11-27 CN CN201811425176.6A patent/CN109686505B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4866545B2 (en) * | 2004-12-03 | 2012-02-01 | 株式会社フジクラ | Cable and twisted cable |
| EP2141709A3 (en) * | 2008-07-02 | 2013-09-25 | nkt cables GmbH | Electrical sector cable of the Milliken-type |
| JP2014056714A (en) * | 2012-09-12 | 2014-03-27 | Viscas Corp | Element wire insulation segmentation conductor for power cable |
| CN203102994U (en) * | 2013-01-19 | 2013-07-31 | 盘锦通发线缆有限公司 | Copper-clad aluminum conductor extruded insulation power cable with rated voltage of 1 kV |
| DE102016004552A1 (en) * | 2016-04-15 | 2017-10-19 | Waskönig+Walter Kabel-Werk GmbH u. Co. KG | Cables, in particular high-performance power cables |
| CN206210435U (en) * | 2016-10-08 | 2017-05-31 | 贵州德通电线电缆制造有限公司 | Fire-retardant fireproof cable |
| CN106782892A (en) * | 2017-01-13 | 2017-05-31 | 杭州华新电力线缆有限公司 | A kind of preparation method and equipment of milliken conductor stock block |
| CN107507659A (en) * | 2017-07-10 | 2017-12-22 | 南京航空航天大学 | The forming method of SPL in a kind of low blast wire and the low blast wire |
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| CN109686505A (en) | 2019-04-26 |
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