CN106504821A - A kind of hollow milliken conductor of waterproofing type - Google Patents
A kind of hollow milliken conductor of waterproofing type Download PDFInfo
- Publication number
- CN106504821A CN106504821A CN201611261557.6A CN201611261557A CN106504821A CN 106504821 A CN106504821 A CN 106504821A CN 201611261557 A CN201611261557 A CN 201611261557A CN 106504821 A CN106504821 A CN 106504821A
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- CN
- China
- Prior art keywords
- conductor
- layer
- corrugated
- single line
- hollow
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- 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
- H01B7/17—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
-
- 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
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
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- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of hollow milliken conductor of waterproofing type, the center of the conductor is hollow layer, in the conductor single line layer that hollow layer is externally provided with bilayer；Multiple corrugated conductor stock blocks are externally provided with conductor single line layer, each corrugated conductor stock block is externally provided with corrugated water blocking layer；Be provided with, in gap between the corrugated water blocking layer, the packing that blocks water, water blocking layer is externally provided with multiple corrugated conductor stock blocks；Water blocking yarn is provided between double-deck conductor single line layer.The present invention have producting process difficulty reduction, moulds of industrial equipment, equipment characteristic requirements low, Stability Analysis of Structures, kelvin effect are low, current-carrying capacity is big, block-water performance is good, corrosion-resistant, resistance to oxidation the features such as.
Description
Technical field
The present invention relates to cable conductor field, the hollow milliken conductor of specifically a kind of waterproofing type.
Background technology
Rapid growth and industrialization along with China's economic, Development of China's Urbanization further speed 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 the heavy in section for 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 increase to a certain extent when, 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 above cable conductor 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 breaks 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 a lot of difficult problems and disadvantage in process of production
End：One when being that sector conductor stock block section is excessive, and producting process difficulty increases, moulds of industrial equipment, the characteristic requirements of equipment, and conductor
The stability of structure and flexural property 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 that presses increases
Plus.
In order to increase cross-sectional area of conductor, a kind of improvement of prior art is using hollow milliken conductor structure, including supported
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.
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 reduces, frock mould
Tool, equipment characteristic requirements low, Stability Analysis of Structures, kelvin effect are low, current-carrying capacity is big, block-water performance is good, corrosion-resistant, sludge proof surpass
The hollow milliken conductor in heavy in section.
The hollow milliken conductor of of the present invention kind of waterproofing type, the center of the conductor is hollow layer, is externally provided with hollow layer
Double-deck conductor single line layer；Multiple corrugated conductor stock blocks are externally provided with conductor single line layer, each corrugated conductor stock block peripheral hardware
There is corrugated water blocking layer；It is provided with, in gap between the corrugated water blocking layer, the packing that blocks water, in multiple corrugated conductor stocks
Block is externally provided with water blocking layer；Water blocking yarn is provided between double-deck conductor single line layer.
Further improve, described corrugated conductor stock block is four pieces, its cross sectional shape all same.
Further improve, described conductor single line layer is made up of multiple " Z " type conductor single lines.
Compared with prior art, the beneficial effects of the present invention is：
1st, hollow " Z " type conductor single line stranded layer of the internal self-supporting of the present invention increases conductor whole cross section, meets super
Heavy in section requirement；The fan-shaped high and fan-shaped wide depth of penetration for being less than 2 times of corrugated type conductor stock block, between each corrugated type stock block and
Single line is mutually isolated between stranded " Z " type conductor, although increased considerably cross-sectional area of conductor, segmentation effect is still obvious,
The adverse effect of " kelvin effect " and " approach effect " is preferably minimized limit, substantially increases the transmission capacity of wire." Z " type is led
Body 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 conductor list
Connect more close requirement between line.Hollow self supporting structure ensure that intensity, can be with alternative metals helix tube（Such as stainless steel
Helix tube, bronze helix tube etc.）, drawing copper pipe or the support tube of the material such as plastics, gap is little between milliken conductor stock block,
And the pliability of whole conductor will not be reduced.Hollow structure also at utmost make use of cross-sectional area of conductor, reduction by a larger margin
The adverse effect of " kelvin effect ".
2nd, stranded " Z " the type conductor single line in the segmentation sector conductor stock block periphery of present invention set, inside is provided with a strand block and blocks water
Layer and the packing that blocks water, the segmentation sector conductor stock block section of set reach 1000-2000mm2, " Z " type conductor single line of increase
Increase conductor whole cross section with stock block water blocking layer, meet the requirement of super-section.
3rd, the gap of and set outer in stock block conductor is equipped with water blocking layer, is also externally provided with resistance in " Z " type conductor single line
Water layer, is provided with water blocking yarn between " Z " type conductor single line layer so that overall conductor is protected by water blocking layer so that conductor has very strong
Water stop function, oxidation, the corrosion of conductor will not be caused because of moisture immersion, so as to affect the electrical property of cable, or even be occurred
Abnormal broken line accident.
4th, the present invention is provided with double-deck " Z " type conductor single line so that structure is more firm.
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 hollow milliken conductor of waterproofing type as shown in Figure 1, the center of the conductor is hollow layer 1, in hollow layer peripheral hardware
There is the conductor single line layer 2 of bilayer；Multiple corrugated conductor stock blocks 3 are externally provided with conductor single line layer, each corrugated conductor stock block
It is externally provided with corrugated water blocking layer 4；It is provided with, in gap between the corrugated water blocking layer, the packing 5 that blocks water, in multiple corrugateds
Conductor stock block is externally provided with water blocking layer 6；Water blocking yarn 7 is provided between double-deck conductor single line layer so that overall conductor is by water blocking layer
Protection so that conductor has very strong water stop function, will not cause oxidation, the corrosion of conductor, so as to affect because of moisture immersion
The electrical property of cable, or even there is abnormal broken line accident.
Described conductor single line layer is made up of multiple " Z " type conductor single lines, and " Z " type conductor single line is a kind of self-supporting knot
Structure, Stability Analysis of Structures are very close to each other between conductor single line, need not press, you can meet and more closely will
Ask.Hollow self supporting structure ensure that intensity, can be with alternative metals helix tube（Such as stainless steel helix tube, bronze helix tube
Deng）, drawing copper pipe or the support tube of the material such as plastics, gap is little between milliken conductor stock block, and will not reduce whole
The pliability of conductor.Hollow structure also at utmost make use of cross-sectional area of conductor, by a larger margin reduce " kelvin effect " no
Profit affects.The section of the segmentation sector conductor stock block of described set reaches 1000-2000mm2, increase conductor whole cross section, full
The foot requirement of super-section.
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 (3)
1. the hollow milliken conductor of a kind of waterproofing type, it is characterised in that：The center of the conductor is hollow layer, is externally provided with hollow layer double
The conductor single line layer of layer；Multiple corrugated conductor stock blocks are externally provided with conductor single line layer, each corrugated conductor stock block is externally provided with
Corrugated water blocking layer；It is provided with, in gap between the corrugated water blocking layer, the packing that blocks water, in multiple corrugated conductor stock blocks
It is externally provided with water blocking layer；Water blocking yarn is provided between double-deck conductor single line layer.
2. the hollow milliken conductor of waterproofing type according to claim 1, it is characterised in that：Described corrugated conductor stock block is
Four pieces, its cross sectional shape all same.
3. the hollow milliken conductor of waterproofing type according to claim 1, it is characterised in that：Described conductor single line layer is by multiple
" Z " type conductor single line is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261557.6A CN106504821A (en) | 2016-12-30 | 2016-12-30 | A kind of hollow milliken conductor of waterproofing type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261557.6A CN106504821A (en) | 2016-12-30 | 2016-12-30 | A kind of hollow milliken conductor of waterproofing type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106504821A true CN106504821A (en) | 2017-03-15 |
Family
ID=58334585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611261557.6A Pending CN106504821A (en) | 2016-12-30 | 2016-12-30 | A kind of hollow milliken conductor of waterproofing type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106504821A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202134226U (en) * | 2011-07-06 | 2012-02-01 | 浙江晨光电缆股份有限公司 | High voltage cable large cross section split conductor |
| WO2012065634A1 (en) * | 2010-11-17 | 2012-05-24 | Prysmian S.P.A. | Electric sector 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 |
| 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 |
| CN204332501U (en) * | 2014-12-03 | 2015-05-13 | 董超超 | A kind of new waterproof high voltage power cable |
| CN204667958U (en) * | 2015-05-28 | 2015-09-23 | 浙江万马股份有限公司 | The full water-resistant armored low-voltage cable of a kind of compact |
-
2016
- 2016-12-30 CN CN201611261557.6A patent/CN106504821A/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 |
| CN202134226U (en) * | 2011-07-06 | 2012-02-01 | 浙江晨光电缆股份有限公司 | High voltage cable large cross section split conductor |
| CN104347152A (en) * | 2014-11-24 | 2015-02-11 | 无锡江南电缆有限公司 | Oversized-section hollow corrugated split conductor |
| CN204332501U (en) * | 2014-12-03 | 2015-05-13 | 董超超 | A kind of new waterproof high voltage power 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 |
| CN204667958U (en) * | 2015-05-28 | 2015-09-23 | 浙江万马股份有限公司 | The full water-resistant armored low-voltage cable of a kind of compact |
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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 | ||
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Application publication date: 20170315 |