CN204423982U - A kind of three-phase twisted cable - Google Patents
A kind of three-phase twisted cable Download PDFInfo
- Publication number
- CN204423982U CN204423982U CN201420780855.6U CN201420780855U CN204423982U CN 204423982 U CN204423982 U CN 204423982U CN 201420780855 U CN201420780855 U CN 201420780855U CN 204423982 U CN204423982 U CN 204423982U
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- Prior art keywords
- cable
- core
- phase
- layer
- twisted cable
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- 238000009413 insulation Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000002194 synthesizing Effects 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000004698 Polyethylene (PE) Substances 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 230000032258 transport Effects 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 3
- 238000011049 filling Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 230000005684 electric field Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Abstract
The utility model discloses a kind of three-phase twisted cable, form by three single-core cables are stranded, described three single-core cables by dextrad with planetary stranded mode twisted synthesizing cable.The utility model adopts three single-core cable twisted synthesizing cables, and without the need to filling and any binder after stranding, it has compared with single-core cable, and floor space is little, and the engineering time is short, lays the advantages such as expense is low; Compared with three-core cable, tool has the following advantages: 1) electric cable with large cross-section weight obviously reduces; 2) electric cable with large cross-section transports, lays relatively easily; Ampacity improves relatively; Phase insulation easily ensures, not easily phase fault occurs; 3) save packing material, reduce production cost.
Description
Technical field
The utility model relates to electric wire field, particularly relates to a kind of three-phase twisted cable, is be applicable to 35kV and following power cable.
Background technology
Along with the quickening of Urbanization in China, the application percentage of cable in power circuit is more and more higher.High voltage power cable is because phase insulation problem generally adopts the form of single core.Midium voltage cable because of voltage relatively low, phase insulation is no longer a difficult problem, the form adopting three cores more.Three-core cable, compared with single-core cable, has floor space little, and the engineering time is short, lays the advantages such as expense is low, but it exists following weak point: first, in cables manufacturing and transportation, by the restriction of cable hank and cable deadweight, often coiling cable can not be oversize, and transport is inconvenient, is not easy to lay; Secondly, three-core cable ampacity is less than the single-core cable of same cross-sectional by 5 ~ 10%, reduces energy utilization rate; Again, the three-core cable three characteristics of the middle term is coated togather, and alternate dependence insulating material insulate, if insulating material makes moist, deterioration, then more easily causes phase fault, causes seriously using electric fault.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of three-phase twisted cable, can solve the problems referred to above of existing single-core cable and three-core cable existence.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of three-phase twisted cable, forms by three single-core cables are stranded, described three single-core cables by dextrad with planetary stranded mode twisted synthesizing cable.
In the utility model preferred embodiment, the lay ratio of described three-phase twisted cable is 15 ~ 30.
In the utility model preferred embodiment, described every root single-core cable is the middle pressure single-core cable of any one version.
In the utility model preferred embodiment, described every root single-core cable comprises conductor, conductor shield, insulating barrier, insulation screen, metal screen layer, twining package tape and external sheath layer from inside to outside successively.
In the utility model preferred embodiment, described every root single-core cable comprises conductor, conductor shield, insulating barrier, insulation screen, metal screen layer, twining package tape, isolation jacket layer, non magnetic armour, twining package tape and external sheath layer from inside to outside successively.
In the utility model preferred embodiment, the degree of eccentricity of described every root single-core cable within 8%, to reduce the eccentric and oval electric field distortion caused.
In the utility model preferred embodiment, described conductor is that Equations of The Second Kind presses stranded circular copper conductors or aluminium conductor; Described insulating barrier is crosslinked polyetylene insulated layer; Described metal screen layer is copper strips or copper wire, plays carrying short circuit, electric field shielding effect; Described oversheath is polyethylene extrusion or polyvinyl chloride.
In the utility model preferred embodiment, the thickness of described copper strips is 0.12mm.
In the utility model preferred embodiment, described conductor shield, insulating barrier and insulation screen adopt the extrusion molding of dry type three-layer co-extruded cross-linking production line, guarantee the extrusion forming of trilaminate material, make between three layers of material bonding reliably closely knit, stop the generation of pore, ensure the smooth rounding on each layer surface.
In the utility model preferred embodiment, described isolation jacket layer is polyethylene or polyvinyl chloride; Described non magnetic armour is aluminium strip, aluminium wire, stainless steel band or stainless steel wire, carries out mechanical protection to cable.
The beneficial effects of the utility model are: a kind of three-phase twisted cable of the utility model, adopts three single-core cable (three-phase) twisted synthesizing cables, without the need to filling and any binder after stranding.It is little that three-phase twisted cable of the present utility model has floor space compared with single-core cable, and the engineering time is short, lays the advantages such as expense is low; Compared with three-core cable, tool has the following advantages:
1) electric cable with large cross-section weight obviously reduces;
2) electric cable with large cross-section transports, lays relatively easily; Ampacity improves relatively; Phase insulation easily ensures, not easily phase fault occurs;
3) save packing material, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of a kind of three-phase twisted cable one of the utility model preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1. conductor, 2. conductor shield, 3. insulating barrier, 4. insulation screen; 5. metal screen layer, 6. twining package tape, 7. separation sleeve, 8. non magnetic armour, 9. twining package tape, 10. external sheath layer.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
Refer to Fig. 1, the utility model embodiment comprises:
Embodiment 1
A kind of three-phase twisted cable, is formed so that planetary stranded mode is stranded by dextrad by three single-core cables, stranded shaping after the lay ratio of three-phase twisted cable be 15 ~ 30.Wherein, every root single-core cable is the middle pressure single-core cable of any one version, and its Eccentricity control, within 8%, reduces eccentric and ellipse and causes electric field distortion.
Described every root single-core cable comprises conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, metal screen layer 5, twining package tape 6 and external sheath layer 10 from inside to outside successively.
The conductor 1 of above-mentioned single-core cable is stranded circular copper conductors or aluminium conductor for Equations of The Second Kind presses, the shaping grinding apparatus of this conductor presses mould and adopts nano coating new technology, ensure that conductive surface smooth, without tiny burr, without single line that is protruding and fracture, be that the less basic assurance of value is put in cable main electrical performance indexes office.Insulating barrier 3 is crosslinked polyetylene insulated layer.
Conductor shield 2, insulating barrier 3 and insulation screen 4 adopt the extrusion molding of dry type three-layer co-extruded cross-linking production line, employing cryogenic high pressure extrudes, guarantee the extrusion forming of trilaminate material, make between three layers of material bonding reliably closely knit, stop the generation of pore, ensure that the smooth rounding on each layer surface, and thickness and the degree of eccentricity of insulation and shielding is adjusted in time by on-line automatic derivometer on-line continuous monitoring, ensure that roundness and the concentricity of cable, make Eccentricity control within 8%, cause electric field distortion to reduce eccentric and ellipse.
Described metal screen layer 5 is copper strips or copper wire, and wherein, the thickness of copper strips is 0.12mm, plays carrying short circuit, electric field shielding effect.
Described twining package tape 6 plays the effect of tightening; Described oversheath 10 is polyethylene extrusion or polyvinyl chloride.
Embodiment 2
Be with the difference of embodiment 1, between twining package tape 6 and oversheath 10, be also provided with isolation jacket layer 7, non magnetic armour 8 and twining package tape 9 successively.Wherein, isolation jacket layer 7 is polyethylene or polyvinyl chloride, uses in the cable having armour; Described non magnetic armour 8 is aluminium strip, aluminium wire, stainless steel band or stainless steel wire, cable is played to the effect of mechanical protection; The effect of twining package tape 9 is identical with the effect of twining package tape 6.This cable is for there being the situation of armouring requirement.
Above-mentioned three-phase twisted cable, adopts three single-core cable (three-phase) twisted synthesizing cables, without the need to filling and any binder after stranding.It has compared with single-core cable, and floor space is little, and the engineering time is short, lays the advantages such as expense is low; Compared with three-core cable, tool has the following advantages: 1) electric cable with large cross-section weight obviously reduces; 2) electric cable with large cross-section transports, lays relatively easily; Ampacity improves relatively; Phase insulation easily ensures, not easily phase fault occurs; 3) save packing material, reduce production cost.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a three-phase twisted cable, is characterized in that, form by three single-core cables are stranded, described three single-core cables are by dextrad with planetary stranded mode twisted synthesizing cable, and the lay ratio of described three-phase twisted cable is 15 ~ 30.
2. three-phase twisted cable according to claim 1, is characterized in that, described every root single-core cable is the middle pressure single-core cable of any one version.
3. three-phase twisted cable according to claim 1, is characterized in that, described every root single-core cable comprises conductor, conductor shield, insulating barrier, insulation screen, metal screen layer, twining package tape and external sheath layer from inside to outside successively.
4. three-phase twisted cable according to claim 1, it is characterized in that, described every root single-core cable comprises conductor, conductor shield, insulating barrier, insulation screen, metal screen layer, twining package tape, isolation jacket layer, non magnetic armour, twining package tape and external sheath layer from inside to outside successively.
5. the three-phase twisted cable according to claim 3 or 4, is characterized in that, the degree of eccentricity of described every root single-core cable is within 8%.
6. the three-phase twisted cable according to Claims 2 or 3, is characterized in that, described conductor is that Equations of The Second Kind presses stranded circular copper conductors or aluminium conductor; Described insulating barrier is crosslinked polyetylene insulated layer; Described metal screen layer is copper strips or copper wire; Described external sheath layer is polyethylene extrusion or polyvinyl chloride.
7. three-phase twisted cable according to claim 6, is characterized in that, the thickness of described copper strips is 0.12mm.
8. the three-phase twisted cable according to claim 3 or 4, is characterized in that, described conductor shield, insulating barrier and insulation screen adopt the extrusion molding of dry type three-layer co-extruded cross-linking production line.
9. three-phase twisted cable according to claim 4, is characterized in that, described isolation jacket layer is polyethylene or polyvinyl chloride; Described non magnetic armour is aluminium strip, aluminium wire, stainless steel band or stainless steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420780855.6U CN204423982U (en) | 2014-12-12 | 2014-12-12 | A kind of three-phase twisted cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420780855.6U CN204423982U (en) | 2014-12-12 | 2014-12-12 | A kind of three-phase twisted cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204423982U true CN204423982U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420780855.6U Expired - Fee Related CN204423982U (en) | 2014-12-12 | 2014-12-12 | A kind of three-phase twisted cable |
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| Country | Link |
|---|---|
| CN (1) | CN204423982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409159A (en) * | 2014-12-12 | 2015-03-11 | 江苏亨通高压电缆有限公司 | Three-phase twisted cable |
-
2014
- 2014-12-12 CN CN201420780855.6U patent/CN204423982U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409159A (en) * | 2014-12-12 | 2015-03-11 | 江苏亨通高压电缆有限公司 | Three-phase twisted cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215500 Changshou City Economic Development Zone, Jiangsu province Tongda Road, No. 8, No. Patentee after: Hengtong Submarine Power Cable Co.,Ltd. Address before: 215500 Changshou City Economic Development Zone, Jiangsu province Tongda Road, No. 8, No. Patentee before: JIANGSU HENGTONG HIGH-VOLTAGE CABLE CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20181212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |