CN2650297Y - Anti wind-snow insulated bundling cable - Google Patents
Anti wind-snow insulated bundling cable Download PDFInfo
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- CN2650297Y CN2650297Y CN 03227546 CN03227546U CN2650297Y CN 2650297 Y CN2650297 Y CN 2650297Y CN 03227546 CN03227546 CN 03227546 CN 03227546 U CN03227546 U CN 03227546U CN 2650297 Y CN2650297 Y CN 2650297Y
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- insulation
- cable
- convex ridge
- bunched cable
- insulated wire
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Abstract
The utility model belongs to the electric cable field, which relates to a weatherproof insulation bundled cable, and comprises a metal conductor with an insulation layer externally, the surface of the insulation layer is an insulation salient ridge, the insulation bundled cable is integrated by two or more insulation cores through an insulation band. The utility model has the advantages that: the surface insulation salient ridge of each insulation core in the insulation bundled cable can reduce the wind pressure and reduce the attachment of accumulated snow on the insulation surface. Moreover, because the cable cores are mutually insulated and integrated into the parallel bundled cable, each core suffers the uniform force, no tension is pressured on the insulation layer; with the stretching resistance higher than that of single insulation cable, the parallel bundled cables can be produced and formed once through, with high efficiency, low cost, and simple structure; thereby greatly simplifying the production process, and forming the batch production easier. Moreover, if being used for medium or low voltage distribution network, the cable has the advantages of loss reducing, capital saving, capacity enlarging and safety, etc.
Description
Technical field
The utility model belongs to the power cable technical field, relates to a kind of wind resistance snow insulation bunched cable.
Background technology
In power supply system, high-tension line and greenbelt all will take certain space, and the corridor, space of circuit is narrow and small day by day, and the contradiction of line and tree appears suddenly out gradually, and the electric shock casualty accident constantly increases.And adopting the underground cable power supply, the available underground space is also very limited, moreover the excavation trench is also very difficult, and is expensive more relatively.
The aerial insulated cable system is semi-insulating electric power system, and the part phase voltage is born in insulation, and most phase voltage is born by air.Aerial insulated cable is as the substitute products of bare wire, just is being popular in the world.This is because new material, new technology have been adopted in the manufacturing of aerial insulated cable, combines the advantage of bare wire and common insulated cable.Compare with bare wire at aspects such as electrical property, security performance, economic performances and to have lot of advantages: (1) is compared with traditional bare wire, insulating barrier has stronger weatherability and anti-mechanical damage ability, the oxide etch and the exterior mechanical damage of core have been avoided, improved the stability of electrical operation, longer service life.(2) the aerial insulated cable operating cost is low, sets up conveniently, circuit is attractive in appearance, is not subjected to environmental constraints.(3) insulating barrier of insulated aerial cable is isolated core and external environment condition, safeguard safe in utilization, going offline, falling under the situation of bar still can operate as normal, alternate short trouble and the electric shock accidents of making contact of having avoided harsh weather and other factor to cause, failure rate is lower than bare wire, does not go out phenomenons such as phenomenon high-pressure cross-linking cable water tree, electricity tree again and produce in cable uses, so it is as safe as a house to power.In mature city is transformed, if utilize existing shaft tower, change plain conductor with aerial insulated cable, will be convenient, can save a large amount of funds for engineering construction.
At present, many in the world countries use stranded formula combination stranding type cable, and this cable is because the existence of lay has following drawback: (1) has increased the metal consumption and the circuit electric energy loss of lead.(2) the insulating barrier pressurized of each lead under the tension force effect, unbalance stress causes it to make up anti-pull-off force and obviously reduces.(3) plant-scale equipment is many, and process flow is long, the cost height.When (4) using, division cross-over connection difficulty.
Typhoon is more in the coastal area, and the north is local, annual wind and snow weather is also very long, normal use to cable brings higher requirement, the aerial insulated cable in many places is scraped disconnected in strong wind by wind, or broken by heavy snow, power breakdown, to the locality combat a natural disaster to save oneself, industrial and agricultural development brings very big difficulty.For this reason in recent years, domestic many cities, rural area began to install and use in a large number the clustering insulation cable, and it is to thoroughly do away with the bundled insulated conductors that the edge lead is formed more, directly to be erected between the shaft tower.The favourable anti-load-bearing capacity that cable is provided of this clustering insulation cable.But because the growth of electricity needs, cause that the electric pole design load increases gradually on the power circuit, cause that equipment cost increases.Design (calculated) load depends on wind load on line to a great extent.Therefore the load that reduces the electric wire windward reaches and reduces design load, is to reduce the effective way that the line facility cost increases.
Summary of the invention
Technology technical problem to be solved in the utility model is the wind resistance snow insulation bunched cable that will provide a kind of low-loss, stretching resistance many eradications edge cable strong, that be convenient to install and conveniently produce to form.
The technical scheme that solution the utility model technical problem is adopted is that this wind resistance snow insulation bunched cable comprises metallic conductor, it is characterized in that insulating barrier is arranged outside metallic conductor, and the surface of insulating barrier is the insulation convex ridge.The insulation bunched cable is that the insulated wire cores more than 2 or 2 connects to one by the insulating tape muscle.
The well-known wind load that reduces is used in the golf ball surface processing, make the ball surface form ripples and reduce wind load, so same principle is applied in the cable aspect, when the cable curved surface was very smooth, the eddy current of generation will be near curved surface.For reduce air-flow along the border shearing force to curved surface, just need alleviate the wind speed on border, conversion contact point alee, thereby the number of the eddy current that conversion alee produces, make reduce windward and alee between the pressure difference, final realize reducing wind load.The utility model is exactly to have adopted this to reduce the principle of wind-force, alleviate the wind speed on border by the insulation convex ridge of surface of insulating layer, conversion contact point alee, thereby the number of the eddy current that conversion alee produces, make reduce windward and alee between the pressure difference, reach final realization and reduce wind load.Have and to reduce the insulated cable suffered wind resistance in surface and reduce the function of accumulated snow attached to insulating surface
Description of drawings
Below in conjunction with the embodiment accompanying drawing, the utility model is described in further detail.
Fig. 1 is the single insulated wire cores schematic diagram of wind resistance snow insulation bunched cable
Fig. 2 avenges two core insulation core bunched cable schematic diagrames for the wind resistance that is " yi word pattern " structure
Fig. 3 avenges three core insulation core bunched cable schematic diagrames for the wind resistance that is " yi word pattern " structure
Fig. 4 avenges three core insulation core bunched cable schematic diagrames for the wind resistance that is " △ angle type " structure
Fig. 5 avenges three core insulation core bunched cable schematic diagrames for the wind resistance that is " △ angle type " structure
Fig. 6 is for being the wind resistance snow four-core insulated wire cores bunched cable schematic diagram of " yi word pattern " structure
Fig. 7 is for being the wind resistance snow four-core insulated wire cores bunched cable schematic diagram of " font " structure
Fig. 8 is for being the wind resistance snow four-core insulated wire cores bunched cable schematic diagram of " △ angle type " structure
Among the figure: 1-insulation convex ridge 2-insulating barrier 3-insulating tape muscle 4-metallic conductor
Embodiment
The utility model comprises metallic conductor (4), the insulating barrier (2) that metallic conductor (4) is outer, and the surface insulation convex ridge (1) of insulating barrier (2), the insulated wire cores more than 2 or 2 connects to one by insulating tape muscle (3).Metallic conductor (4) material of wind resistance snow insulation bunched cable can adopt copper, aluminium and aluminium alloy, conductor wire core can produce copper stranded conductor, aluminium stranded conductor, aluminium alloy stranded conductor, copper-alloy stranded conductor or copper covered steel twisted wire, in addition for laying the bigger bunched cable of span, its conductor wire core can adopt copper covered steel wire or middle for steel core, is the structure of aluminium stranded conductor or aluminium alloy stranded conductor on every side.Mainly play a supportive role for steel core, copper stranded conductor, aluminium stranded conductor or aluminium alloy stranded conductor mainly play transmission current.The insulating barrier (2) of insulation bunched cable adopts polyvinyl chloride insulation material, black weatherability low density polyethylene (LDPE) Insulation Material or the cross-linked thermal set polyolefin of weatherability.Carbon black content was controlled at certain scope, and carbon black content just had dielectric property preferably at 0.5～1% o'clock.For solving the contradiction between light aging and the electric property, we have adopted particle diameter is the carbon black of 20～100n μ, and evenly mixed the distribution, even carbon black content is 0.5～1.0% o'clock, still has good photooxidation aging property, still can stop particle diameter (being wavelength) is that the photon of 300～400n μ enters among the macromolecule insulation, thereby does not cause hydrocarbon strong fractureing and the cracking of insulating, and causes insulation accelerated aging.
The special character of wind resistance snow insulation bunched cable is that the insulation convex ridge (1) on insulating barrier (2) surface is connected as a single entity with insulating barrier, the surface must be smooth, the junction of the insulation convex ridge (1) and the convex ridge (1) that insulate must smooth the connection, wedge angle can not be arranged, and insulation convex ridge (1) and insulating barrier (2) are same insulating material.Each insulated wire cores of wind resistance snow insulation bunched cable, its insulation convex ridge (1) is arc, and arc central angle is by height (H) decision of bow.The arc central angle of the arch height (H) of the radius (R) of insulation convex ridge (1), insulation convex ridge, insulating barrier radius (r), two insulation convex ridges is the shape that (θ) determines the insulation convex ridge jointly with the center of circle angulation of this insulated wire cores.The arch height (h) of the insulation convex ridge (1) of clustering insulation cable is determined by designing wind speed, insulation radius (r).The scope of ordinary circumstance lower conductor nominal cross is 1.5～800mm
2, conductor radius (r.) scope be that the scope of 1.37mm～32mm, θ is that 10 °～22.5 °, the scope of h/r are 0.05～0.2, h 〉=0.5*R*SIN (θ/2).Therefore, the scope of the arch height (h) of insulation convex ridge is 0.15mm～4mm.
The quantity (n) of the insulation convex ridge of wind resistance snow insulation bunched cable is determined by designing wind speed, insulation radius (r).The scope of ordinary circumstance lower conductor nominal cross is 1.5～800mm
2, the scope of conductor radius r is that the scope of 1.37mm～32mm, θ is that 10 °～22.5 °, the scope of h/r are 0.05～0.2, h 〉=0.5*R*SIN (θ/2).Therefore, the scope of the quantity (n) of insulation convex ridge is 10～40.
Wind resistance snow insulation bunched cable is used in the low voltage electric network pattern, and its main feature is to use in the backbone of aerial cable and branch line.
Wind resistance snow insulation bunched cable is formed two wires form (seeing accompanying drawing 2) by two insulated wire cores, is " yi word pattern " structural arrangement, can be used for the insulation bunched cable of horizontal laying; Wind resistance snow insulation bunched cable is formed three-way insulation bunched cable (seeing accompanying drawing 3,4,5) by three insulated wire cores, for three-way insulation bunched cable, can be designed as three and thoroughly does away with the edge core point-blank, is " yi word pattern " structural arrangement (seeing accompanying drawing 3); Insulated wire cores also can be designed to " △ angle type " structural arrangement (seeing accompanying drawing 4,5), for accompanying drawing 4 this structures, in actual production,,, also can its expansion be " yi word pattern " simultaneously according to the needs that lay so the cable factory daily life of a family is selected this structure for use than being easier to.Wind resistance snow clustering insulation cable is formed three-way insulation bunched cable by three insulated wire cores, and when when low-voltage network uses, it is used for three-phase three-wire system; Wind resistance snow insulation bunched cable is formed four lines insulation bunched cable (seeing accompanying drawing 6,7,8) by four insulated wire cores, for four lines insulation bunched cable, can be designed as four and thoroughly does away with the edge core point-blank, is " yi word pattern " structural arrangement; Insulated wire cores also can design and be " font " structural arrangement; Insulated wire cores also can be designed to " △ angle type " structural arrangement;
Wind resistance snow insulation bunched cable is formed four lines insulation bunched cable by four insulated wire cores, and when when low-voltage network uses, it is used for three-phase four-wire system.Can be according to the situation that makes the low year wind-force of use, for the insulation bunched cable that is " font ", in design, lower left cable conduction core cross-sectional sizes, insulation thickness that can lee face design less than other insulated wire cores, simultaneously, other insulated wire cores are little relatively for the arch height (h) of the insulation convex ridge on its surface, and insulation convex ridge quantity wants many; For " △ angle type " insulation bunched cable, in design, mainly be used in large span and lay the aspect, the center core that is " △ angle type " can be designed to steel wire, wherein mainly to act on be the anti-Zhang Nengli that is used for strengthening cable to steel wire.Simultaneously, cross-sectional sizes, the insulation thickness that in design, also will be the center core of " △ angle type " design less than other insulated wire cores, and other insulated wire cores are little relatively for the arch height (h) of the insulation convex ridge on its surface, and insulation convex ridge quantity wants many; Wind resistance snow insulation bunched cable thoroughly does away with the edge leads cross section that is symmetrically distributed by four and is " font ", in the intermediate gaps that the clustering insulation cable forms, because the eddy current that does not have wind to form, insulated wire cores can not need the convex ridge that insulate towards forming intermediate gaps SI semi-insulation laminar surface, surface of insulating layer just no longer has the insulation convex ridge, thereby can save some materials.
Advantage of the present utility model is that the insulation convex ridge (1) on this each insulated wire cores surface of insulation bunched cable has the effect that reduces blast, and simultaneously, its insulation convex ridge has the effect that reduces accumulated snow.Simultaneously, form parallel boundling owing to each core mutually insulated of lead and through being with muscle to fuse, thereby each lead is stressed evenly, insulating barrier is pressurized not, make up anti-pull-off force close greater than composition in the anti-pull-off force sum of each single insulated conductor, the production one-shot forming of parallel Bundling conducting wire (promptly once extruding three or four), the efficient height, cost is low, compare with stranded stranding formula structure, parallel boundling conductor structure is simple, and the big simplification of production technology easily forms large-scale production.Simultaneously, use in low and medium voltage distribution network, it has at aspects such as falling damage, joint money, dilatation, safety and presents good effect.
Claims (10)
1, a kind of wind resistance snow insulation bunched cable comprises metallic conductor (4), it is characterized in that insulating barrier (2) is arranged outside metallic conductor (4), and the surface of insulating barrier (2) is insulation convex ridge (1).
2, wind resistance according to claim 1 snow insulation bunched cable, the bunched cable that it is characterized in that insulating are that the insulated wire cores more than 2 or 2 connects to one by insulating tape muscle (3).
3, wind resistance snow insulation bunched cable according to claim 1 and 2, metallic conductor (4) material of bunched cable of it is characterized in that insulating can adopt copper, aluminum or aluminum alloy, conductor wire core can produce copper stranded conductor, aluminium stranded conductor, aluminium alloy stranded conductor, copper-alloy stranded conductor or copper covered steel twisted wire, in addition for laying the bigger bunched cable of span, its conductor wire core can adopt copper covered steel wire or middle for steel core, is the structure of aluminium stranded conductor or aluminium alloy stranded conductor on every side.
4, wind resistance snow insulation bunched cable according to claim 1 and 2, the insulating barrier (2) of bunched cable of it is characterized in that insulating adopts polyvinyl chloride insulation material, black weatherability low density polyethylene (LDPE) Insulation Material or the cross-linked thermal set polyolefin of weatherability, carbon black content is controlled at 5%～1%, particle diameter is 20n μ～100n μ, evenly mixed the distribution.
5, wind resistance snow insulation bunched cable according to claim 1 and 2, the convex ridge (1) that it is characterized in that insulating is arc, arc central angle is by height (H) decision of bow, and the arc central angle of the arch height (H) of the radius (R) of insulation convex ridge, insulation convex ridge, insulating barrier radius (r), two insulation convex ridges is the shape that (θ) determines the insulation convex ridge jointly with the center of circle angulation of this insulated wire cores.
6, wind resistance snow insulation bunched cable according to claim 5, the scope that it is characterized in that the conductor nominal cross is 1.5～800mm
2, conductor radius (r
o) scope be that the scope of 1.37mm～32mm, θ is that 10 °～22.5 °, the scope of h/r are 0.05～0.2, during h 〉=0.5*R*SIN (θ/2), the scope of the arch height (h) of insulation convex ridge (1) is 0.15mm～4mm, and the scope of the quantity (n) of insulation convex ridge is 10～40.
7, wind resistance snow insulation bunched cable according to claim 2, it is characterized in that two insulated wire cores composition two wires forms, be " yi word pattern " structural arrangement, three insulated wire cores are formed three-way insulation bunched cable, can be designed as three and thoroughly do away with the edge core point-blank, be " yi word pattern " structural arrangement, or be designed to " △ angle type " structural arrangement, four insulated wire cores are formed four lines insulation bunched cable, can be designed as four and thoroughly do away with the edge core point-blank, be " yi word pattern " structural arrangement, or the structural arrangement or the insulated wire cores that are " △ angle type " structure can be designed to " font " structural arrangement.
8, wind resistance snow insulation bunched cable according to claim 7, it is characterized in that for form four lines insulation bunched cable by four insulated wire cores, when when low-voltage network uses, it is used for three-phase four-wire system, for " font " insulation bunched cable, in the lower left of lee face cable conduction core cross-sectional sizes, insulation thickness is less than other insulated wire cores, simultaneously, other insulated wire cores are little relatively for the arch height (h) of the insulation convex ridge on its surface, and insulation convex ridge quantity wants many, for " △ angle type " insulation bunched cable, in design, mainly be used in large span and lay the aspect, " △ angle type " center core can be designed to steel wire, the cross-sectional sizes of " △ angle type " center core, insulation thickness is less than other insulated wire cores, and other insulated wire cores are little relatively for the arch height (h) of the insulation convex ridge on its surface, and insulation convex ridge quantity wants many.
9, according to claim 7 or 8 described wind resistance snow insulation bunched cables, it is characterized in that four thoroughly do away with the structural arrangement that edge lead symmetrical distribution cross section is " font ", in the intermediate gaps that the insulation bunched cable forms, because the eddy current that does not have wind to form, insulated wire cores can not need the convex ridge that insulate towards forming intermediate gaps SI semi-insulation laminar surface.
10, wind resistance snow insulation bunched cable according to claim 1 and 2, the insulation convex ridge (1) that it is characterized in that insulating barrier (2) surface is connected as a single entity with insulating barrier, the surface must be smooth, the junction of insulation convex ridge (1) and insulation convex ridge (1) must smooth the connection, and insulate convex ridge (1) and insulating barrier (2) are same insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03227546 CN2650297Y (en) | 2003-05-06 | 2003-05-06 | Anti wind-snow insulated bundling cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03227546 CN2650297Y (en) | 2003-05-06 | 2003-05-06 | Anti wind-snow insulated bundling cable |
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| Publication Number | Publication Date |
|---|---|
| CN2650297Y true CN2650297Y (en) | 2004-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03227546 Expired - Fee Related CN2650297Y (en) | 2003-05-06 | 2003-05-06 | Anti wind-snow insulated bundling cable |
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| CN (1) | CN2650297Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945704A (en) * | 2012-11-16 | 2013-02-27 | 湖南省衡电电缆有限公司 | Low-pressure environment-friendly aerial insulation cable |
| CN104616803A (en) * | 2015-03-02 | 2015-05-13 | 周盈裕 | Overhead line |
| CN105609187A (en) * | 2016-03-28 | 2016-05-25 | 云南巨力线缆制造有限公司 | One-step formed three-core overhead cable |
| CN105845277A (en) * | 2016-03-28 | 2016-08-10 | 云南巨力线缆制造有限公司 | One-time forming overhead cable production process |
-
2003
- 2003-05-06 CN CN 03227546 patent/CN2650297Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945704A (en) * | 2012-11-16 | 2013-02-27 | 湖南省衡电电缆有限公司 | Low-pressure environment-friendly aerial insulation cable |
| CN104616803A (en) * | 2015-03-02 | 2015-05-13 | 周盈裕 | Overhead line |
| CN104616803B (en) * | 2015-03-02 | 2016-07-06 | 周盈裕 | Aerial line |
| CN105609187A (en) * | 2016-03-28 | 2016-05-25 | 云南巨力线缆制造有限公司 | One-step formed three-core overhead cable |
| CN105845277A (en) * | 2016-03-28 | 2016-08-10 | 云南巨力线缆制造有限公司 | One-time forming overhead cable production process |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TEBIAN ELECTRIC APPARATUS STOCK CO., LTD. Free format text: FORMER NAME OR ADDRESS: XINJIANG TBEA ELECTRICAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: Tebian Electrician Co., Ltd. Patentee before: Tebian Electrotechnical Co., Ltd., Xinjiang |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |