CN106531328A - Water blocking double-layer single-wire hollow split conductor - Google Patents
Water blocking double-layer single-wire hollow split conductor Download PDFInfo
- Publication number
- CN106531328A CN106531328A CN201611261560.8A CN201611261560A CN106531328A CN 106531328 A CN106531328 A CN 106531328A CN 201611261560 A CN201611261560 A CN 201611261560A CN 106531328 A CN106531328 A CN 106531328A
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- Prior art keywords
- conductor
- layer
- water blocking
- corrugated
- single line
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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
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
- H01B7/303—Conductors comprising interwire insulation
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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
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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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
-
- 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
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
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- Insulated Conductors (AREA)
Abstract
The invention discloses a water blocking double-layer single-wire hollow split conductor. The center of the conductor is a hollow layer, double conductor single-wire layers are arranged outside the hollow layer, and a water blocking tape is arranged between the double conductor single-wire layers; a plurality of corrugated conductor strand blocks are arranged outside the conductor single-wire layers, and a corrugated water blocking layer is arranged outside each corrugated conductor strand block; a circular conductor is arranged in each corrugated conductor strand block, and a circular water blocking layer is arranged outside each circular conductor; water blocking filling strips are arranged in the clearances between the corrugated water blocking layers, and a water blocking layer is arranged outside the plurality of corrugated conductor strand blocks; in the double conductor single-wire layers, the inner layer is composed of a plurality of corrugated conductor single wires, and the outer layer is composed of a plurality of Z-shaped conductor single wires. The conductor has the characteristics of low production process difficulty, low requirements for characteristics of tooling molds and equipment, stable structure, low skin effect, large carrying capacity, good water blocking performance, corrosion resistance, oxidation resistance and the like.
Description
Technical field
The present invention relates to cable conductor field, the hollow milliken conductor of specifically a kind of waterproofing type bilayer single line.
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 electric 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 overall dimensions of each part are 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
Stricture of vagina 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
Serpentine pipe, outside the serpentine pipe for supporting, the corrugated type conductor stock block of stranded four segmentation, five segmentations, six segmentations and seven segmentations, this
The serpentine pipe that the hollow milliken conductor of structure is supported often adopts metallic coil to ensure certain intensity（Such as rustless steel spiral shell
Coil, bronze serpentine pipe etc.）, different metal material can increase line loss, cause electric field uneven.Even if using identical
Material, can also produce gap between serpentine pipe 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 is more
The hollow milliken conductor of layer.
A kind of hollow milliken conductor of waterproofing type bilayer single line of the present invention, the center of the conductor is hollow layer, in
Dead level is externally provided with the conductor single line layer of bilayer, between double-deck conductor single line layer is provided with waterstop；In conductor single line layer peripheral hardware
There are multiple corrugated conductor stock blocks, each corrugated conductor stock block is externally provided with corrugated water blocking layer；Each described corrugated is led
Round conductor is equipped with body stock block, each round conductor is externally provided with circular water blocking layer；Between between the corrugated water blocking layer
The packing that blocks water is provided with gap, water blocking layer is externally provided with multiple corrugated conductor stock blocks；The conductor single line layer of described bilayer, it is interior
Layer is made up of multiple tile-type conductor single lines, and outer layer is made up of multiple " Z " type conductor single lines.
Further improve, described corrugated conductor stock block is four pieces, its cross sectional shape all same.
Compared with prior art, the beneficial effects of the present invention is：
1st, internal hollow " Z " the type conductor single line and tile-type conductor single line stranded layer for being provided with one layer of self-supporting of the present invention makes conductor
Whole cross section increases, and meets the requirement of super-section；Corrugated type conductor stock block is fan-shaped high and fan-shaped wide be less than 2 times and penetrate depth
Degree, between each corrugated type stock block and between stranded " Z " type conductor, single line is mutually isolated, although has increased considerably conductor and has cut
Face, segmentation effect are still obvious, and the adverse effect of " kelvin effect " and " approach effect " is preferably minimized limit, substantially increases and leads
The transmission capacity of line." Z " type conductor single line is a kind of self supporting structure, and Stability Analysis of Structures is very close to each other between conductor single line, need not
Press, you can meet.Hollow self supporting structure ensure that intensity, can substitute
Metallic coil（Such as stainless steel helix tube, bronze serpentine pipe etc.）, drawing copper pipe or the support tube of the material such as plastics, with segmentation
Between conductor stock block, gap is little, and will not reduce the pliability of whole conductor.Hollow structure also at utmost make use of conductor
Section, the adverse effect for reducing " kelvin effect " by a larger margin.
2nd, stranded " Z " type conductor single line and tile-type conductor single line in the milliken conductor stock block of present invention set, inside is provided with
Stock block water blocking layer and the packing that blocks water, the segmentation sector conductor stock block section of set reach 1000-2000mm2, " Z " type of increase
Conductor single line and stock block water blocking layer increase conductor whole cross section, meet the requirement of super-section.
3rd, the gap of and set outer in stock block conductor is equipped with water blocking layer, also leads in " Z " type conductor single line and tile-type
Water blocking layer is provided between body single line so that overall conductor is protected by water blocking layer so that conductor has very strong water stop function, will not
Because moisture immersion causes the oxidation of conductor, corrosion, so as to affect the electrical property of cable, or even there is abnormal broken line accident.
4th, the outer stranded tile-type conductor single line of hollow layer, contact surface ratio " Z " the type conductor list of tile-type conductor single line and hollow layer
Line with it is good with the contact surface planarization of hollow layer, gap is little, and compactness is higher.
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.
The hollow milliken conductor of a kind of waterproofing type bilayer single line as shown in Figure 1, the center of the conductor is hollow layer 1, in
Dead level is externally provided with the conductor single line layer 2 of bilayer, between double-deck conductor single line layer is provided with waterstop 3；Outside conductor single line layer
Multiple corrugated conductor stock blocks 4 are provided with, each corrugated conductor stock block is externally provided with corrugated water blocking layer 5；Each described Concha Arcae
Round conductor 6 is equipped with shape conductor stock block, each round conductor is externally provided with circular water blocking layer 7；The corrugated water blocking layer it
Between gap in be provided with the packing 8 that blocks water, be externally provided with water blocking layer 9 in multiple corrugated conductor stock blocks；The conductor of described bilayer
Single line layer, internal layer are made up of multiple tile-type conductor single lines, and outer layer is made up of multiple " Z " type conductor single lines, and self supporting structure is stable,
It is very close to each other between conductor single line, need not press, you can meet.Hollow props up certainly
Support structure ensure that intensity, can be with alternative metals serpentine pipe（Such as stainless steel helix tube, bronze serpentine pipe etc.）, drawing copper pipe or
Between the support tube of the materials such as plastics, with milliken conductor stock block, gap is little, and will not reduce the pliability of whole conductor.It is hollow
Structure also at utmost make use of cross-sectional area of conductor, the adverse effect for reducing " kelvin effect " by a larger margin.Described set
Segmentation sector conductor stock block section reach 1000-2000mm2, increase conductor whole cross section, meet wanting for super-section
Ask.
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. the hollow milliken conductor of a kind of waterproofing type bilayer single line, it is characterised in that：The center of the conductor is hollow layer, in hollow layer
The conductor single line layer of bilayer is externally provided with, and waterstop is provided between double-deck conductor single line layer；It is externally provided with conductor single line layer many
Individual corrugated conductor stock block, each corrugated conductor stock block are externally provided with corrugated water blocking layer；Each described corrugated conductor stock
Round conductor is equipped with block, each round conductor is externally provided with circular water blocking layer；In gap between the corrugated water blocking layer
The packing that blocks water is provided with, and water blocking layer is externally provided with multiple corrugated conductor stock blocks；The conductor single line layer of described bilayer, internal layer by
Multiple tile-type conductor single line compositions, outer layer are made up of multiple " Z " type conductor single lines.
2. the hollow milliken conductor of waterproofing type according to claim 1 bilayer single line, it is characterised in that：Described corrugated is led
Body stock block is four pieces, its cross sectional shape all same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261560.8A CN106531328A (en) | 2016-12-30 | 2016-12-30 | Water blocking double-layer single-wire hollow split conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261560.8A CN106531328A (en) | 2016-12-30 | 2016-12-30 | Water blocking double-layer single-wire hollow split conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106531328A true CN106531328A (en) | 2017-03-22 |
Family
ID=58336203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611261560.8A Pending CN106531328A (en) | 2016-12-30 | 2016-12-30 | Water blocking double-layer single-wire hollow split conductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106531328A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065634A1 (en) * | 2010-11-17 | 2012-05-24 | Prysmian S.P.A. | Electric sector cable |
| CN203799746U (en) * | 2014-04-16 | 2014-08-27 | 江苏藤仓亨通光电有限公司 | Novel fiber composite overhead phase line |
| CN204045265U (en) * | 2014-09-15 | 2014-12-24 | 江苏港通电缆有限公司 | Aluminium core crosslinked polyethylene insulated aerial cable |
| CN104347152A (en) * | 2014-11-24 | 2015-02-11 | 无锡江南电缆有限公司 | Oversized-section hollow corrugated split conductor |
| CN204215771U (en) * | 2014-11-27 | 2015-03-18 | 无锡江南电缆有限公司 | A kind of multicore water repellent electric cable |
| CN204332471U (en) * | 2014-12-29 | 2015-05-13 | 江苏久泰电缆有限公司 | A kind of degree of depth waterproof power cable |
-
2016
- 2016-12-30 CN CN201611261560.8A patent/CN106531328A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065634A1 (en) * | 2010-11-17 | 2012-05-24 | Prysmian S.P.A. | Electric sector cable |
| CN203799746U (en) * | 2014-04-16 | 2014-08-27 | 江苏藤仓亨通光电有限公司 | Novel fiber composite overhead phase line |
| CN204045265U (en) * | 2014-09-15 | 2014-12-24 | 江苏港通电缆有限公司 | Aluminium core crosslinked polyethylene insulated aerial cable |
| CN104347152A (en) * | 2014-11-24 | 2015-02-11 | 无锡江南电缆有限公司 | Oversized-section hollow corrugated split conductor |
| CN204215771U (en) * | 2014-11-27 | 2015-03-18 | 无锡江南电缆有限公司 | A kind of multicore water repellent electric cable |
| CN204332471U (en) * | 2014-12-29 | 2015-05-13 | 江苏久泰电缆有限公司 | A kind of degree of depth waterproof power cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |
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| WD01 | Invention patent application deemed withdrawn after publication |