CN203038717U - Overhead insulation water-resisting cable of aluminium alloy conductor with 20kV rated voltage - Google Patents
Overhead insulation water-resisting cable of aluminium alloy conductor with 20kV rated voltage Download PDFInfo
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- CN203038717U CN203038717U CN 201220642309 CN201220642309U CN203038717U CN 203038717 U CN203038717 U CN 203038717U CN 201220642309 CN201220642309 CN 201220642309 CN 201220642309 U CN201220642309 U CN 201220642309U CN 203038717 U CN203038717 U CN 203038717U
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Abstract
The utility model relates to an overhead insulation water-resisting cable of an aluminium alloy conductor with a 20kV rated voltage. The overhead insulation water-resisting cable comprises a water-resisting conductor. A semi-conductive inner shielding layer and a black weather-proof crosslinked polyethylene layer are successively wrapped outside the water-resisting conductor. The water-resisting conductor is filled and twisted by aluminium alloy single wires and water-resisting materials, and the water-resisting materials are respectively added into the conductor from a secondary external layer to an inner layer. The cable is the overhead insulation water-resisting cable of the aluminium alloy conductor with the 20kV rated voltage and can be suitable for power transmission and distribution lines in urban and rural areas where rainfall is abundant. The cable helps to solve problems that an end of the cable is not sealed tightly, a relatively large part of the conductor is affected by water to cause oxidation and corrosion of an overhead cable lead, insulation water tree branches occur and the insulation quality decreases.
Description
Technical field
The utility model belongs to the cable technology field, relates to a kind of cable that blocks water, especially a kind of rated voltage 20kV aluminium alloy conductor overhead insulating cable that blocks water.
Background technology
The aerial insulated cable operative norm of China is GB/T 1252-72008 " rated voltage 1kV and following aerial insulated cable " and GB/T 14049-2008 " rated voltage 10kV aerial insulated cable ".The medium voltage distribution network of China is substantially based on 10kV at present.Yet the fast development along with national economy, particularly in the economically developed coastal region in east China, power load density increases rapidly, radius of electricity supply strengthens, show outstanding problem days such as existing 10kV distribution system capacity is little, load is overweight, power supply capacity is not enough and supply line's terminal voltage is low, the line loss loss is bigger than normal, be difficult to bear the power load of sharp increase.
Compare with traditional 10kV power distribution network, 20kV power distribution network power voltage supply radius is big, not only can increase power supply capacity, can also reduce by 75% power consumption, has the considerable energy saving benefit.According to measuring and calculating, carry same constant power, the non-ferrous metal consumption of 20kV supply line can reduce 50%, saves construction investment about 40% etc.
Some economic relatively advanced countries already with 20kV formally as an electric pressure of power distribution network, done so as states such as the U.S., Canada, France, Germany, Hungary, Japan, Korea S, Singapore, Indonesia, Thailand and Malaysia, obtained good economic benefits.1993, Suzhou City Singapore industrial park took the lead in adopting 20kV as distribution voltage, had successfully moved 20 years nearly, had obtained good economic and social benefit.2009, according to the national grid spirit of " about promoting the notice of 20kV electric pressure ", Jiangsu Province took the lead in again promoting 20kV electric pressure pilots power supply projects in 13 districts and cities inside the province.
In addition, common aerial insulated cable also has some problems to merit attention on serviceability and inquires into, one of them significant problem is in practice, finds that the aerial insulated cable conductor is easy to generate into water problem of oxidation, causes that thus the accident of conductor broken string is more.
Because structure and the mounting condition of traditional aluminium core overhead insulated cable cause into water easily because terminal is poorly sealed, the moisture content vertical migration accumulates in the tower of insulated overhead line apart from low ebb place and non-volatile; Again because environmental pollution water has acidity, produce oxidation reaction with aluminium and generate white powder simultaneously, this type oxide accelerates the corrosion to lead under effect of electric field, and the lead intensity that causes thus reduces, and problems such as bulge, broken string occur; The long-term existence of moisture content causes the insulation water tree aging serious, and the combined material continuous decline of insulation product causes overhead transmission line ground frequent maintenance.The intensive degree height of modern city net power circuit in case destroyed, causes accidents such as large-area power-cuts, control misoperation, communication disruption, and loss is serious.
From long-term plan, aerial insulated cable remains China's principal item of adopting of inner city netting twine road of longer a period of time from now on.The exploitation 20kV overhead insulating cable that blocks water improves the properties of product of aerial insulated cable, is the needs in market.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of rated voltage 20kV aluminium alloy conductor overhead insulating cable that blocks water is provided, this cable is that rated voltage is the aluminium alloy conductor overhead insulating of the 20kV cable that blocks water, and can be applicable to the town and country electric line that rainfall is abundant.Can solve cable termination when poorly sealed, moisture content enters conductor distance long oxidation and corrosion to the aerial cable lead, and insulation has water tree to take place, the problem that the insulation quality descends.
The purpose of this utility model solves by the following technical programs:
This rated voltage 20kV aluminium alloy conductor overhead insulating cable that blocks water comprises water-blocking conductor, is enclosed with semiconductive internal shield and the weather-proof crosslinked polyethylene layer of black successively at the skin of described water-blocking conductor; Described water-blocking conductor is filled the strand system by aluminium alloy single line and material water-proof material and is formed, and conductor adds material water-proof material respectively from inferior skin to internal layer.
Contact closely between above-mentioned water-blocking conductor and semiconductive internal shield, the weather-proof crosslinked polyethylene layer of black.
The utility model rated voltage 20kV aluminium alloy conductor overhead insulating town and country electric line that cable is applicable to that rainfall is abundant that blocks water.When having avoided cable termination poorly sealed, moisture content enters conductor distance long oxidation and corrosion to the aerial cable lead, and insulating has water tree to take place, the problem that the insulation quality descends, the fail safe that improves insulated overhead line, the useful life of prolongation cable.The rated voltage 20kV aluminium alloy conductor overhead insulating cable that blocks water has characteristics such as tensile strength is good, cable is in light weight, transmission capacity is big, loss is little, investment cost is low simultaneously, can reduce laying and maintenance cost of urban and rural power grids overhead transmission line.The design and use of this product can improve fail safe and reliability that rainfall enriches the electric power system in area, and tangible society and economic benefit are arranged.
Description of drawings
Fig. 1 is cable cross-section structural representation of the present utility model.
Wherein: 1 is water-blocking conductor; 2 is the semiconductive internal shield; 3 is the weather-proof crosslinked polyethylene layer of black.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1, the rated voltage 20kV aluminium alloy conductor overhead insulating of the present utility model cable that blocks water comprises water-blocking conductor 1, is enclosed with semiconductive internal shield 2 and the weather-proof crosslinked polyethylene layer 3 of black successively at the skin of described water-blocking conductor 1; Water-blocking conductor 1 is filled the strand system by aluminium alloy single line and material water-proof material and is formed, and conductor adds material water-proof material respectively from inferior skin to internal layer.For material water-proof material is inserted in the gap of each layer equably, the lead conducting of necessary each interlayer of assurance simultaneously in design and manufacture process, is adopted processing technology and the mould of design, makes pressing of conductor tight, even, guarantees the block-water performance of conductor well.For not reducing the aluminium alloy pull-off force, improve block-water performance simultaneously, adopt from inferior skin to internal layer and press, but it is lower to press coefficient, the outermost layer aluminum steel adopts the bigger coefficient that presses, and improves the conductor compacting degree.
Conductor screen of the present utility model uses semiconductive material, and the weather-proof crosslinked polyethylene of black is used in insulation, has good insulation resistance, working temperature height, ESCR.In manufacture process, inner shield and insulating barrier adopt three-layer co-extruded crosslinked unit once to extrude, contact between conductor and inner shield, inner shield and the insulating barrier tight, assurance good insulation performance resistance and electric property, has good mechanical property simultaneously, the characteristics of long service life.
Claims (2)
1. rated voltage 20kV aluminium alloy conductor overhead insulating cable that blocks water is characterized in that, comprises water-blocking conductor (1), is enclosed with semiconductive internal shield (2) and the weather-proof crosslinked polyethylene layer of black (3) successively at the skin of described water-blocking conductor (1); Described water-blocking conductor (1) is filled the strand system by aluminium alloy single line and material water-proof material and is formed, and conductor adds material water-proof material respectively from inferior skin to internal layer.
2. the rated voltage 20kV aluminium alloy conductor overhead insulating according to claim 1 cable that blocks water is characterized in that, contacts closely between described water-blocking conductor (1) and semiconductive internal shield (2), the weather-proof crosslinked polyethylene layer of black (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642309 CN203038717U (en) | 2012-11-16 | 2012-11-16 | Overhead insulation water-resisting cable of aluminium alloy conductor with 20kV rated voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642309 CN203038717U (en) | 2012-11-16 | 2012-11-16 | Overhead insulation water-resisting cable of aluminium alloy conductor with 20kV rated voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203038717U true CN203038717U (en) | 2013-07-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642309 Expired - Fee Related CN203038717U (en) | 2012-11-16 | 2012-11-16 | Overhead insulation water-resisting cable of aluminium alloy conductor with 20kV rated voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203038717U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9741467B2 (en) | 2014-08-05 | 2017-08-22 | General Cable Technologies Corporation | Fluoro copolymer coatings for overhead conductors |
| US9859038B2 (en) | 2012-08-10 | 2018-01-02 | General Cable Technologies Corporation | Surface modified overhead conductor |
| US10726975B2 (en) | 2015-07-21 | 2020-07-28 | General Cable Technologies Corporation | Electrical accessories for power transmission systems and methods for preparing such electrical accessories |
| US10957468B2 (en) | 2013-02-26 | 2021-03-23 | General Cable Technologies Corporation | Coated overhead conductors and methods |
| US10957467B2 (en) | 2014-01-08 | 2021-03-23 | General Cable Technologies Corporation | Coated overhead conductor |
| US11319455B2 (en) | 2015-11-13 | 2022-05-03 | General Cable Technologies Corporation | Cables coated with fluorocopolymer coatings |
-
2012
- 2012-11-16 CN CN 201220642309 patent/CN203038717U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9859038B2 (en) | 2012-08-10 | 2018-01-02 | General Cable Technologies Corporation | Surface modified overhead conductor |
| US10586633B2 (en) | 2012-08-10 | 2020-03-10 | General Cable Technologies Corporation | Surface modified overhead conductor |
| US10957468B2 (en) | 2013-02-26 | 2021-03-23 | General Cable Technologies Corporation | Coated overhead conductors and methods |
| US10957467B2 (en) | 2014-01-08 | 2021-03-23 | General Cable Technologies Corporation | Coated overhead conductor |
| US9741467B2 (en) | 2014-08-05 | 2017-08-22 | General Cable Technologies Corporation | Fluoro copolymer coatings for overhead conductors |
| US10726975B2 (en) | 2015-07-21 | 2020-07-28 | General Cable Technologies Corporation | Electrical accessories for power transmission systems and methods for preparing such electrical accessories |
| US11319455B2 (en) | 2015-11-13 | 2022-05-03 | General Cable Technologies Corporation | Cables coated with fluorocopolymer coatings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |