CN106782826A - A kind of hollow milliken conductor of waterproofing type super-section - Google Patents
A kind of hollow milliken conductor of waterproofing type super-section Download PDFInfo
- Publication number
- CN106782826A CN106782826A CN201611263853.XA CN201611263853A CN106782826A CN 106782826 A CN106782826 A CN 106782826A CN 201611263853 A CN201611263853 A CN 201611263853A CN 106782826 A CN106782826 A CN 106782826A
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- China
- Prior art keywords
- conductor
- layer
- hollow
- corrugated
- water blocking
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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
- 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
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/02—Single bars, rods, wires, or strips
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
-
- 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
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- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of hollow milliken conductor of waterproofing type super-section, the center of the conductor is hollow layer or filling water blocking layer；The conductor single line layer of individual layer is externally provided with hollow layer or filling water blocking 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；The packing that blocks water is provided with gap between the corrugated water blocking layer, water blocking layer is externally provided with multiple corrugated conductors stock block.The present invention with producting process difficulty reduction, moulds of industrial equipment, equipment characteristic requirements it is low, Stability Analysis of Structures, kelvin effect is 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, specifically a kind of hollow milliken conductor of waterproofing type super-section.
Background technology
Further speeded up along with the rapid growth of China's economic and industrialization, Development of China's Urbanization, to urban distribution network
Construction requirements etc. infrastructure are increasingly improved, and developed regions city requires that urban central zone uses ground one after another with provincial capital
Lower power cable transmits electric energy.Meanwhile, electric power is premise and the basis of the national economic development, with the quick hair of national economy
Exhibition, electricity needs increases 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 the increase in direct ratio with the increase in cable conductor section,
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 increased ratio of leakage resistance is also bigger, depends merely on increasing section and also just loses its practicality and economy.
Increase to mitigate the conductor AC resistance caused by kelvin effect to greatest extent, effectively reduce the damage of conductor
Consumption heating, increases the current-carrying capacity of conductor, people have in a different manner to carry out large size conductor division processing turn into 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 often made milliken conductor 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.Because 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, and the purpose of conductor AC resistance is reduced so as to reach.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 structure type of the five stranded arrangements of milliken conductor stranding.This shape
Formula includes the copper core stock block of five sizes and cross sectional shape all same, by five copper cores stock blocks twist stranding in certain direction,
The described milliken conductor of big section copper core five is also included being arranged between copper core stock block, the insulation of keeping apart each stock block wrinkle
Line paper, and it is wrapped in the semiconductive nylon tape of copper core stock block periphery.Break the whole up into parts by by big section copper core wire, by original
The copper core sectional uniform for coming is divided into five mutually isolated stock blocks, so that 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 depth of penetration for being more than 2 times wide（Collection skin effect
Should be formed in the decay of conductor due to field amount, the decay speed that field is measured in conductor can use saturating people's depth representing）,
Thus segmentation effect is just no longer obvious.Meanwhile, the mode of this milliken conductor there is also many problems and disadvantage in process of production
End：One when being excessive sector conductor stock block section, 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 to lead using pressing
Body, to improve the fill factor of wire, reduced outside diameter reduces gap between conductor, prevents moisture from penetrating into；Make to be connected more between conductor
Closely, it is to avoid loosen caused some problems contact surfaces increase electric conductivity enhancing and avoid contact with the bad heating for causing
Resistance is big etc.；And sector conductor stock block is that sector is pressed, every 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 improvement of prior art is to use hollow milliken conductor structure, including support
Helix tube, the corrugated type conductor strand block of stranded four segmentation, five segmentations, six segmentations and seven segmentations, this outside the helix tube of support
The helix tube of the hollow milliken conductor support of structure often uses 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, gap can be also produced between helix tube and milliken conductor stock block, and loose contact causes heating resistor big.And use drawing pipe
Or the copper pipe of material such as plastics etc., pliability is low, can cause the pliability of whole conductor and reduce.
The intrusion of moisture be often power cable destroyed, the affected main cause of service life.Moisture immerses
Approach is mainly the end intrusion cable of the sheath and cable from cable, oxidation, the corrosion of conductor is caused, so as to influence 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 reduction, frock mould
Tool, equipment characteristic requirements it is low, Stability Analysis of Structures, kelvin effect is low, and current-carrying capacity is big, block-water performance is good, corrosion-resistant, resistance to oxidation super
The hollow milliken conductor in heavy in section.
The of the present invention kind of hollow milliken conductor of waterproofing type super-section, the center of the conductor is hollow layer or filling
Water blocking layer；The conductor single line layer of individual layer is externally provided with hollow layer or filling water blocking layer；Multiple watts are externally provided with conductor single line layer
Stupefied shape conductor stock block, each corrugated conductor stock block is externally provided with corrugated water blocking layer；Gap between the corrugated water blocking layer
In be provided with the packing that blocks water, multiple corrugated conductors stock block be externally provided with water blocking 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 are：
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 depth of penetration for being less than 2 times wide 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, without pressing, you can meet conductor list
More close requirement is connected 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 small 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, segmentation sector conductor stock stranded " Z " the type conductor single line of block inner circumferential 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, increased " Z " type conductor single line
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 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 influence cable
Electrical property, or even there is abnormal broken line accident.
Brief description of the drawings
Fig. 1 is structural representation of the 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 super-section as shown in Figure 1, the center of the conductor is hollow layer or fills out
Fill water blocking layer 1；The conductor single line layer 2 of individual layer is externally provided with hollow layer or filling water blocking layer 1；It is externally provided with conductor single line layer many
Individual corrugated conductor stock block 3, each corrugated conductor stock block is externally provided with corrugated water blocking layer 4；Between the corrugated water blocking layer
Gap in be provided with the packing 5 that blocks water, multiple corrugated conductors stock block be externally provided with water blocking layer 6.
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 is very close to each other between conductor single line, without pressing, you can to meet connect between conductor single line and more closely
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 small 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 influence.The section of the segmentation sector conductor stock block of described set reaches 1000-2000mm2, increase conductor whole cross section, it is 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 (6)
1. a kind of hollow milliken conductor of waterproofing type super-section, it is characterised in that：The center of the conductor is hollow layer or filling
Water blocking layer；The conductor single line layer of individual layer is externally provided with hollow layer or filling water blocking layer；Multiple watts are externally provided with conductor single line layer
Stupefied shape conductor stock block, each corrugated conductor stock block is externally provided with corrugated water blocking layer；Gap between the corrugated water blocking layer
In be provided with the packing that blocks water, multiple corrugated conductors stock block be externally provided with water blocking layer.
2. the hollow milliken conductor of waterproofing type super-section according to claim 1, it is characterised in that：Described corrugated is led
Body stock block is four pieces, its cross sectional shape all same.
3. the hollow milliken conductor of waterproofing type super-section according to claim 1, it is characterised in that：Described conductor single line
Layer is made up of multiple " Z " type conductor single lines.
4. the hollow milliken conductor of super-section according to claim 1, it is characterised in that：Described conductor single line layer（2）
During for bilayer, one layer is made up of multiple " Z " type conductor single lines, and another layer is made up of multiple tile-type conductor single lines.
5. the hollow milliken conductor of super-section according to claim 2, it is characterised in that：Described conductor single line layer（2）
During for bilayer, bilayer can be constituted by multiple " Z " type conductor single lines.
6. the hollow milliken conductor of super-section according to claim 2, it is characterised in that：Described conductor single line layer（2）
During for bilayer, bilayer can be constituted by multiple tile-type conductor single lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263853.XA CN106782826A (en) | 2016-12-30 | 2016-12-30 | A kind of hollow milliken conductor of waterproofing type super-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263853.XA CN106782826A (en) | 2016-12-30 | 2016-12-30 | A kind of hollow milliken conductor of waterproofing type super-section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106782826A true CN106782826A (en) | 2017-05-31 |
Family
ID=58951296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611263853.XA Pending CN106782826A (en) | 2016-12-30 | 2016-12-30 | A kind of hollow milliken conductor of waterproofing type super-section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106782826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370627A (en) * | 2021-07-06 | 2021-09-10 | 扬州腾飞电缆电器材料有限公司 | Diaphragm type multilayer water-blocking tape for water-blocking cable and manufacturing method thereof |
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 CN201611263853.XA patent/CN106782826A/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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370627A (en) * | 2021-07-06 | 2021-09-10 | 扬州腾飞电缆电器材料有限公司 | Diaphragm type multilayer water-blocking tape for water-blocking cable and manufacturing method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
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| WD01 | Invention patent application deemed withdrawn after publication |