CN202487256U - High-voltage cable split conductor structure - Google Patents
High-voltage cable split conductor structure Download PDFInfo
- Publication number
- CN202487256U CN202487256U CN2012200792613U CN201220079261U CN202487256U CN 202487256 U CN202487256 U CN 202487256U CN 2012200792613 U CN2012200792613 U CN 2012200792613U CN 201220079261 U CN201220079261 U CN 201220079261U CN 202487256 U CN202487256 U CN 202487256U
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- Prior art keywords
- conductor structure
- division
- tension cable
- tape
- protective layer
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Abstract
The utility model relates to a high-voltage cable split conductor structure which comprises protection layers, semiconductor bands and at least four split strand pieces. The split strand pieces are formed by copper single-wire bundles wrapped by insulating tapes, and each copper single-wire bundle is assembled by a plurality of copper single-wires. The four split strand pieces are wrapped by the semiconductor bands, and the periphery of each conductor band is wrapped by the protection layer. Compared with the prior art, the high-voltage cable split conductor structure has the advantages of greatly improving current-carrying capacity of cables, avoiding skin effect, and the like.
Description
Technical field
The utility model relates to a kind of high-tension cable, especially relates to a kind of high-tension cable divided conductor structure.
Background technology
In order to improve the ampacity of cable, adopt the way that increases cross-sectional area of conductor usually.But because the capacity of conductor transmission current is not linear increasing along with the increase of cross-sectional area of conductor, this phenomenon is because conductor " kelvin effect " and " proximity effect " in the process of transmission alternating current causes.When conductor diameter increased to a certain degree, kelvin effect was serious, and the interchange effective resistance that causes conductor is that AC resistance can be obviously greater than its D.C. resistance, thereby depended merely on increasing section and also just lost its practicality and economy.Increase along with cross-sectional area of conductor; This phenomenon meeting more and more significant; Therefore the crosslinked polyetylene insulated high pressure of 110～220kV and the ultrahigh voltage power cross-section of cable are more than 800mm2; Must adopt milliken conductor, cause the influence of the conductor resistance increase of cable transmission of power to reduce " kelvin effect " and " proximity effect ".
The utility model content
The purpose of the utility model is exactly the high-tension cable divided conductor structure that a kind of ampacity that can improve cable greatly is provided in order to overcome the defective that above-mentioned prior art exists, avoids kelvin effect.
The purpose of the utility model can realize through following technical scheme: a kind of high-tension cable divided conductor structure; It is characterized in that; This structure comprises protective layer, semiconductor tape, at least four division strand pieces; Described division strand piece is assembled the copper single line bundle that forms by the insulating tape parcel by many copper single lines and is formed, and described at least four division strand pieces are wrapped up by semiconductor tape, and described semiconductor tape periphery also is enclosed with protective layer.
Described insulating tape is an isolated insulation crimped paper.
After described at least four division strand pieces are stranded tightly with band, wrapped again semiconductor tape.
The cross section of described division strand piece is fan-shaped, and a plurality of divisions strand piece is assembled the back and formed a circle just.
Described protective layer is the nonwoven fabrics protective layer.
Described semiconductor tape is the semiconductive nylon tape.
Compared with prior art; The utility model is through to the cutting apart of conductor, make every single line along the radial position of conductor near the center to away from the center, the electromagnetic force that is positioned at the center is with to be positioned at the edge electromagnetic force in the opposite direction; Mutual partial offset, this has just significantly reduced its kelvin effect.Can improve the ampacity of cable so greatly, its practicality and economy are fully played, make the best use of everything.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of another embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of high-tension cable divided conductor structure, this structure comprise protective layer, semiconductor tape 3, four division strand pieces 1.Division strand piece 1 is assembled the copper single line bundle that forms by insulating tape 2 parcels by many copper single lines and is formed.Four division strand pieces 1 are by semiconductor tape 3 parcels.Semiconductor tape 3 peripheries also are enclosed with protective layer.Insulating tape is an isolated insulation crimped paper.After four division strand pieces are stranded tightly with band, wrapped again semiconductor tape.The cross section of division strand piece is fan-shaped, and four division strand pieces are assembled the back and formed a circle just.Protective layer is the nonwoven fabrics protective layer.Semiconductor tape is the semiconductive nylon tape.Fig. 2 is five conductor structures that division strand piece forms.Division strand piece can also be six, seven etc.The utility model structure mainly is applicable to middle uiform section 800～1800mm
2, have good segmentation effect.This fan-segmentation mode; The outward appearance rounding after when the design of structure and casted die mould, will fully taking into account stranding and the electrical property of conductor will guarantee that two angles of sector are sharper, then behind the stranding per two secter pat junctions cross get over smooth; There is not obvious recessed joint, the outward appearance rounding.In order to eliminate the internal stress that produces in the milliken conductor stranding process, fan-shaped strand of piece must adopt preforming to press when the strand system, and stranding then adopts the back twist stranding with automatic deviation correction.The milliken conductor center is adopted conductor filled.
Claims (6)
1. high-tension cable divided conductor structure; It is characterized in that; This structure comprises protective layer, semiconductor tape, at least four division strand pieces; Described division strand piece is assembled the copper single line bundle that forms by the insulating tape parcel by many copper single lines and is formed, and described at least four division strand pieces are wrapped up by semiconductor tape, and described semiconductor tape periphery also is enclosed with protective layer.
2. a kind of high-tension cable divided conductor structure according to claim 1 is characterized in that described insulating tape is an isolated insulation crimped paper.
3. a kind of high-tension cable divided conductor structure according to claim 1 is characterized in that, after described at least four division strand pieces are stranded tightly with band, and wrapped again semiconductor tape.
4. a kind of high-tension cable divided conductor structure according to claim 1 is characterized in that, the cross section of described division strand piece is fan-shaped.
5. a kind of high-tension cable divided conductor structure according to claim 1 is characterized in that described protective layer is the nonwoven fabrics protective layer.
6. a kind of high-tension cable divided conductor structure according to claim 1 is characterized in that described semiconductor tape is the semiconductive nylon tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200792613U CN202487256U (en) | 2012-03-05 | 2012-03-05 | High-voltage cable split conductor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200792613U CN202487256U (en) | 2012-03-05 | 2012-03-05 | High-voltage cable split conductor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487256U true CN202487256U (en) | 2012-10-10 |
Family
ID=46961660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200792613U Expired - Lifetime CN202487256U (en) | 2012-03-05 | 2012-03-05 | High-voltage cable split conductor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361941A (en) * | 2014-11-24 | 2015-02-18 | 无锡江南电缆有限公司 | Ultra-large-section fanlike split conductor |
-
2012
- 2012-03-05 CN CN2012200792613U patent/CN202487256U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361941A (en) * | 2014-11-24 | 2015-02-18 | 无锡江南电缆有限公司 | Ultra-large-section fanlike split conductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |