CN106531295A - Split water-blocking conductor - Google Patents
Split water-blocking conductor Download PDFInfo
- Publication number
- CN106531295A CN106531295A CN201611263845.5A CN201611263845A CN106531295A CN 106531295 A CN106531295 A CN 106531295A CN 201611263845 A CN201611263845 A CN 201611263845A CN 106531295 A CN106531295 A CN 106531295A
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- CN
- China
- Prior art keywords
- conductor
- sector
- water
- block
- blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a split water-blocking conductor, which is formed by gathering multiple large split sector-shaped conductor strand blocks, wherein a sector-shaped strand block water-blocking layer is arranged outside each large split sector-shaped conductor strand block; a small split sector-shaped conductor strand block is also arranged in each large split sector-shaped conductor strand block and one sector-shaped strand block water-blocking layer is arranged outside each small split sector-shaped conductor strand block; a large circular conductor is arranged in each small split sector-shaped conductor strand block and a circular water-blocking layer is arranged outside each large circular conductor; a small circular conductor is also arranged in each large circular conductor and one circular water-blocking layer is arranged outside each large circular conductor; a center gap after the multiple sector-shaped conductor strand blocks are gathered is filled with a water-blocking rod; the gaps between the sector-shaped conductor strand blocks are filled with water-blocking strips; and a water-blocking layer is finally arranged outside a conductor single-wire layer. The split water-blocking conductor has the characteristics that the production technology difficulty is reduced, the characteristic requirements of tools, molds and equipment are low, the structure is stable, the skin effect is low, the carrying capacity is high, the water-blocking property is good, and the corrosion resistance and the oxidation resistance are good.
Description
Technical field
The present invention relates to cable conductor field, specifically a kind of Splittable water-blocking conductor.
Background technology
Rapid growth and industrialization, Development of China's Urbanization along with China's economic further speeds up, to urban distribution network
Increasingly improve etc. the construction requirements of infrastructure, developed regions city requires urban central zone using ground with provincial capital one after another
Lower power cable transmits electric energy.Meanwhile, electric power is the premise of the national economic development and basis, with quick of national economy
Exhibition, electricity needs increase severely, net capacity abruptly increase, and power of motor increases, and electric power facility is towards Large Copacity（High voltage, high current, height
Frequently）Transmission direction develops.In order to improve the current-carrying capacity of cable, generally using the method for increase cross-sectional area of conductor.
The D.C. resistance of conductor is an important parameter for examining cable electrical property.But for the heavy in section of exchange transmission
Cable, due to the presence of kelvin effect, the current density in conductor is not to be uniformly distributed, but along cable conductor radially from table
Mian Dao centers are gradually reduced, and cause the current-carrying capacity in conductor to be not increase with cable conductor section and increase in direct ratio,
But when conductor diameter increases to a certain extent, kelvin effect is serious, cause conductor in alternating electromotive force circuit produce loss and
The effective resistance of heating is that AC resistance can be significantly greater than its D.C. resistance, and external diameter is bigger, and kelvin effect is more obvious, causes to hand over
The ratio that leakage resistance increases is also bigger, depends merely on increasing section and also just loses its practicality and economy.
In order to mitigate because the conductor AC resistance that kelvin effect causes increases to greatest extent, effectively reduce the damage of conductor
Consumption heating, increases the current-carrying capacity of conductor, people have to carry out large size conductor in a different manner division processing become by
The conductor that the independent sector of several mutually insulateds is constituted, the appearance and size of each part is obviously reduced, to reach reduction alternating current
The purpose of resistance.Power cable with cross-linked polyethylene insulation copper core conductor is made milliken conductor often in power cable industry, is typically had
Several structures such as four segmentations, five segmentations, six segmentations and seven segmentations, split share block also has the shapes such as fan-shaped and corrugated, with five points
Cut sector element in the majority.As the sectional area of single sector element only has the one of some points of conductor total sectional area, so single
" kelvin effect " and " kindred effect " of stock block is greatly reduced, so as to reach the purpose for reducing conductor AC resistance.Such as in GB/
In T11017 and GB/Z 18890, with 800mm2As watershed：800mm2Following cable conductor presses stranded row using conventional
Array structure form；800mm2And the cable conductor of the above is using the version of the stranded arrangement of five milliken conductor strandings.This shape
Formula includes the copper core stock block of five sizes and cross sectional shape all same, by five copper core stock blocks twist stranding in certain direction,
Described five milliken conductor of big section copper core also includes the insulation wrinkle for being arranged between the copper core stock block, keeping apart each stock block
Line paper, and it is wrapped in the semiconductive nylon tape of the copper core stock block periphery.By big section copper core wire is broken the whole up into parts, by original
The copper core sectional uniform for coming is divided into five mutually isolated stock blocks, so as to by the unfavorable shadow of " kelvin effect " and " approach effect "
Sound is preferably minimized limit, substantially increases the transmission capacity of wire.
The mode of this sector element milliken conductor of prior art, is primarily adapted for use in middle uiform section 800-1800mm2, have
Good segmentation effect.But for more heavy in section, due to the fan-shaped high and fan-shaped wide depth of penetration more than 2 times（Collection skin effect
Decay that should be due to field quantity in conductor is formed, and decay speed of the field quantity in conductor can be with saturating people's depth representing）,
Thus segmentation effect is just no longer obvious.Meanwhile, the mode of this milliken conductor there is also many difficult problems and disadvantage in process of production
End：One when being that sector conductor stock block section is excessive, producting process difficulty increase, moulds of industrial equipment, the characteristic requirements of equipment, and conductor
Stability and flexural property of structure etc. cannot meet requirement；Two is that power cable often wants conductor lead using pressing
Body, to improve the activity coefficient of wire, reduced outside diameter reduces gap between conductor, prevents moisture from penetrating into；Make to connect more between conductor
Closely, it is to avoid loosen some caused problems. contact surface increase electric conductivity strengthens and avoids contact with the bad heating for causing
Resistance is big etc.；And sector conductor stock block is that sector is pressed, per layer of shape is different, and when stock block section is excessive, the difficulty pressed increases
Plus.
In order to increase cross-sectional area of conductor, a kind of prior art improvement is, using hollow milliken conductor structure, including to support
Helix tube, outside the helix tube for supporting, the corrugated type conductor stock block of stranded four segmentation, five segmentations, six segmentations and seven segmentations, this
The helix tube that the hollow milliken conductor of structure is supported often adopts metallic coil to ensure certain intensity（Such as stainless steel spiral shell
Coil, bronze helix tube etc.）, different metal material can increase line loss, cause electric field uneven.Even if using identical
Material, can also produce gap between helix tube and milliken conductor stock block, loose contact causes heating resistor big.And adopt drawing pipe
Or the copper pipe of material such as plastics etc., pliability is low, and the pliability of whole conductor can be caused to reduce.
The intrusion of moisture be often power cable destroyed, the affected main cause of service life.Moisture immerses
End of the approach mainly from the sheath and cable of cable invades cable, causes oxidation, the corrosion of conductor, so as to affect cable
Electrical property, or even there is abnormal broken line accident；Moisture penetrates into insulating barrier, and in the presence of highfield, insulating barrier can produce " water tree
Branch ", accelerates the voltage ageing of cable, causes cable breakdown accident, reduces cable service life.In order to prevent the intrusion of moisture,
Ask closely very close to each other between each structure of cable.
The content of the invention
The present invention is in order to solve problems of the prior art, there is provided a kind of producting process difficulty is reduced, frock mould
Tool, equipment characteristic requirements it is low, Stability Analysis of Structures, kelvin effect are low, and current-carrying capacity is big, block-water performance is good, corrosion-resistant, sludge proof point
Cut conductor.
A kind of Splittable water-blocking conductor of the present invention, the conductor is by multiple large-scale segmentation sector conductor stock set of blocks
Into, and sector element water blocking layer is externally provided with each large-scale sector conductor stock block；In each large-scale segmentation sector conductor stock block
Small-sized segmentation sector conductor stock block is inside additionally provided with, and sector element water blocking layer is externally provided with each low profile, sector conductor stock block；
A big round conductor is equipped with each described low profile, sector conductor stock block, outside each big round conductor, circle is equipped with
Form drag water layer；A little round conductor is additionally provided with each big round conductor, is all provided with outside each big round conductor
There is circular water blocking layer；The rod that blocks water, each sector conductor stock block are filled at the center gap after multiple sector conductor stock set of blocks
Between gap filling water baffle bar, be finally provided with water blocking layer again outside conductor single line layer.
Further improve, described corrugated conductor stock block is five pieces, its cross sectional shape size all same.
Further improve, the large-scale segmentation sector conductor stock block is identical with the shape of small-sized segmentation sector conductor stock block,
But it is of different sizes.
Compared with prior art, the beneficial effects of the present invention is：
1st, the conductor is provided with small one and large one sector conductor stock block and small one and large one round conductor, increased the electric conductivity of conductor
Can, increased the current-carrying capacity of conductor.
2nd, a strand block water blocking layer is provided with inside the milliken conductor stock block of present invention set, and be provided with dual milliken conductor stock block
With dual round conductor, the segmentation sector conductor stock block section of set reaches 1500-3000mm2, increase conductor whole cross section, it is full
The foot requirement of super-section.
3rd, the gap of and set outer in every personal share block conductor is equipped with water blocking layer, and each round conductor is externally provided with and blocks water
Layer, the gap filling water baffle bar between sector conductor stock block so that overall conductor is protected by water blocking layer so that conductor has very
Strong water stop function, will not cause oxidation, the corrosion of conductor, so as to affect the electrical property of cable, or even send out because of moisture immersion
Raw abnormal broken line accident.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
A kind of Splittable water-blocking conductor as shown in Figure 1, the conductor is by the big segmentation sector conductor stock block 1 in multiple cross sections
Set is formed, and the sector conductor stock block big in each cross section is externally provided with sector element water blocking layer 2；In each large-scale segmentation
The little segmentation sector conductor stock block 3 in cross section is additionally provided with sector conductor stock block, and outside each low profile, sector conductor stock block
It is provided with sector element water blocking layer 2；A big round conductor 4 is equipped with each described low profile, sector conductor stock block, each one
Circular water blocking layer 5 is equipped with outside big round conductor；A little round conductor 6 is additionally provided with each big round conductor,
Circular water blocking layer 5 is equipped with outside each big round conductor；Fill out at the center gap after multiple sector conductor stock set of blocks
The rod 7 that blocks water is filled, the gap filling water baffle bar 8 between each sector conductor stock block is finally provided with resistance outside conductor single line layer again
Water layer 9.
Concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, it is noted that for
For those skilled in the art, under the premise without departing from the principles of the invention, some improvement can also be made, this
A little improvement also should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of Splittable water-blocking conductor, it is characterised in that：The conductor is formed by multiple large-scale segmentation sector conductor stock set of blocks,
And sector element water blocking layer is externally provided with each large-scale sector conductor stock block；Go back in each large-scale segmentation sector conductor stock block
Small-sized segmentation sector conductor stock block is provided with, and sector element water blocking layer is externally provided with each low profile, sector conductor stock block；It is described
Each low profile, sector conductor stock block in be equipped with a big round conductor, be equipped with circular resistance outside each big round conductor
Water layer；A little round conductor is additionally provided with each big round conductor, outside each big round conductor, circle is equipped with
Form drag water layer；The rod that blocks water is filled at the center gap after multiple sector conductor stock set of blocks, between each sector conductor stock block
Gap filling water baffle bar, be finally provided with water blocking layer again outside conductor single line layer.
2. Splittable water-blocking conductor according to claim 1, it is characterised in that：Described corrugated conductor stock block is five
Block, its cross sectional shape size all same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263845.5A CN106531295A (en) | 2016-12-30 | 2016-12-30 | Split water-blocking conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263845.5A CN106531295A (en) | 2016-12-30 | 2016-12-30 | Split water-blocking conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106531295A true CN106531295A (en) | 2017-03-22 |
Family
ID=58336219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611263845.5A Pending CN106531295A (en) | 2016-12-30 | 2016-12-30 | Split water-blocking conductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106531295A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201498259U (en) * | 2009-09-10 | 2010-06-02 | 江苏通光信息有限公司 | Non-metal enhanced submarine cable core with conductive core |
| CN201622863U (en) * | 2010-02-08 | 2010-11-03 | 天津塑力集团超高压电缆有限公司 | Parting conductor with longitudinal water-proof structure |
| CN202694964U (en) * | 2012-05-16 | 2013-01-23 | 安徽华峰电缆集团有限公司 | Power cable with polyvinyl chloride insulating layer and sheath layers |
| CN103545033A (en) * | 2013-10-24 | 2014-01-29 | 兴乐电缆有限公司 | Separating conductor for ultra-high voltage cable |
-
2016
- 2016-12-30 CN CN201611263845.5A patent/CN106531295A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201498259U (en) * | 2009-09-10 | 2010-06-02 | 江苏通光信息有限公司 | Non-metal enhanced submarine cable core with conductive core |
| CN201622863U (en) * | 2010-02-08 | 2010-11-03 | 天津塑力集团超高压电缆有限公司 | Parting conductor with longitudinal water-proof structure |
| CN202694964U (en) * | 2012-05-16 | 2013-01-23 | 安徽华峰电缆集团有限公司 | Power cable with polyvinyl chloride insulating layer and sheath layers |
| CN103545033A (en) * | 2013-10-24 | 2014-01-29 | 兴乐电缆有限公司 | Separating conductor for ultra-high voltage cable |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |