CN102760521B - Power cable with layered insulating stranded conductor - Google Patents
Power cable with layered insulating stranded conductor Download PDFInfo
- Publication number
- CN102760521B CN102760521B CN201110107647.0A CN201110107647A CN102760521B CN 102760521 B CN102760521 B CN 102760521B CN 201110107647 A CN201110107647 A CN 201110107647A CN 102760521 B CN102760521 B CN 102760521B
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- Prior art keywords
- conductor
- layer
- power cable
- insulation
- cross
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- 239000004020 conductor Substances 0.000 title claims abstract description 50
- 238000009413 insulation Methods 0.000 claims description 28
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 12
- 230000003139 buffering effect Effects 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000011247 coating layer Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The invention relates to a power cable with a layered insulating stranded conductor, which comprises a conductor, insulated crepe paper, a semiconducting layer, an insulating layer, a semiconducting shielding layer, a buffering layer, a metal sheath and a coat layer, wherein the conductor, the semiconducting layer, the insulating layer, the semiconducting shielding layer, the buffering layer, the metal sheath and the coating layer are arranged in sequence from inside to outside; the insulated crepe paper divides the conductor into a plurality of strand blocks; and the power cable also comprises a wrapping insulating layer, wherein the wrapping insulating layer and the conductor are coaxially arranged, and the radius of the cross section of the wrapping insulating layer is 1/5-4/5 of that of the cross section of the conductor. Compared with the prior art, the power cable disclosed by the invention has the advantages of improving the current-carrying capacity of the power cable under certain laying condition, simplifying the production process and the like.
Description
Technical field
The present invention relates to a kind of power cable, especially relate to a kind of power cable of layering insulation stranded conductor.
Background technology
Power cable is generally comprised of copper conductor core, insulating barrier, metallic sheath, sheath and serving.
The conductor of power cable is generally stranded copper single line and forms, and is bearing logical current-carrying Core Feature, when its conductor dbus is crossed alternating current, affected by kelvin effect, and the electric current distribution of conductor is also inhomogeneous.Along with the increase of cross-sectional area of conductor, the effect that current density increases from inside to outside is gradually remarkable gradually, and the average current density on conductor unit area reduces gradually, and conductor utilance progressively declines, and its AC resistance increases gradually.
Summary of the invention
Object of the present invention is exactly in order to overcome the defect of above-mentioned prior art existence, to provide a kind of to improve the ampacity of power cable under certain laid condition, simplify the power cable of the layering insulation stranded conductor of generating process.
Object of the present invention can be achieved through the following technical solutions:
A kind of power cable of layering insulation stranded conductor, the conductor comprising, insulation crimped paper, semi-conductive layer, insulating barrier, semiconductive shielding layer, resilient coating, metallic sheath, serving, described conductor, semi-conductive layer, insulating barrier, semiconductive shielding layer, resilient coating, metallic sheath, serving set gradually from inside to outside, described insulation crimped paper is divided into some personal share pieces by conductor, it is characterized in that, also comprise wrapping insulation layer, this wrapping insulation layer and conductor coaxially arrange, and its cross section radius is 1/5～4/5 of conductors cross radius.
Described insulation crimped paper is divided into five personal share pieces by conductor.
The cross section radius of described wrapping insulation layer is 1/2 of conductors cross radius.
The cross section of described wrapping insulation layer is circular.
Compared with prior art, the present invention has the following advantages:
1, on every personal share piece of conductor, increase wrapping insulation layer, improved like this average current density of the middle part of every personal share piece, greatly reduced AC resistance and the A.C.power loss thereof of conductor, improve the ampacity of power cable under certain laid condition;
2, when processing, also simplified the production technology of conductor, in cable joint place and end, better operated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of power cable of layering insulation stranded conductor, the conductor 1 comprising, insulation crimped paper 2, semi-conductive layer 4, insulating barrier 5, semiconductive shielding layer 6, resilient coating 7, metallic sheath 8, serving 9, described conductor 1, semi-conductive layer 4, insulating barrier 5, semiconductive shielding layer 6, resilient coating 7, metallic sheath 8, serving 9 sets gradually from inside to outside, described insulation crimped paper 2 is divided into five personal share pieces by conductor 1, the present invention also comprises wrapping insulation layer 3, this wrapping insulation layer 3 coaxially arranges with conductor, its cross section radius is 1/2 of conductors cross radius.So just improved the average current density of the middle part of every personal share piece, greatly reduced the AC resistance of conductor, than single line insulated electric conductor, not only improved the ampacity ability of cable conductor, and when processing, also simplified the production technology of conductor, in cable joint place and end, better operate.
Claims (4)
1. the power cable of a layering insulation stranded conductor, the conductor comprising, insulation crimped paper, semi-conductive layer, insulating barrier, semiconductive shielding layer, resilient coating, metallic sheath, serving, described conductor, semi-conductive layer, insulating barrier, semiconductive shielding layer, resilient coating, metallic sheath, serving sets gradually from inside to outside, described insulation crimped paper is divided into some personal share pieces by conductor, it is characterized in that, also be included in the wrapping insulation layer increasing on every personal share piece of conductor, this wrapping insulation layer and conductor coaxially arrange, its cross section radius is 1/5～4/5 of conductors cross radius.
2. the power cable of a kind of layering insulation stranded conductor according to claim 1, is characterized in that, described insulation crimped paper is divided into five personal share pieces by conductor.
3. the power cable of a kind of layering insulation stranded conductor according to claim 1, is characterized in that, the cross section radius of described wrapping insulation layer is 1/2 of conductors cross radius.
4. the power cable of a kind of layering insulation stranded conductor according to claim 1, is characterized in that, the cross section of described wrapping insulation layer is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110107647.0A CN102760521B (en) | 2011-04-27 | 2011-04-27 | Power cable with layered insulating stranded conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110107647.0A CN102760521B (en) | 2011-04-27 | 2011-04-27 | Power cable with layered insulating stranded conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102760521A CN102760521A (en) | 2012-10-31 |
| CN102760521B true CN102760521B (en) | 2014-11-26 |
Family
ID=47054944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110107647.0A Active CN102760521B (en) | 2011-04-27 | 2011-04-27 | Power cable with layered insulating stranded conductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102760521B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741959A (en) * | 2016-05-04 | 2016-07-06 | 江苏红峰电缆集团有限公司 | Single-core high-voltage power cable for 8.7/10kv and lower voltage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598104Y (en) * | 2003-02-13 | 2004-01-07 | 河北宝丰线缆有限公司 | Big section copper core fire-dividing conductor |
| CN101620898A (en) * | 2009-08-10 | 2010-01-06 | 杭州电缆有限公司 | Production method for crosslinked polyethylene insulating power cable for ultra-high voltage aluminum core segmental conductor |
| CN201607992U (en) * | 2010-03-10 | 2010-10-13 | 安徽宏源特种电缆集团有限公司 | Novel shielded power cable |
| CN101950625A (en) * | 2010-09-26 | 2011-01-19 | 杭州电缆有限公司 | Power cable |
| CN202093879U (en) * | 2011-04-27 | 2011-12-28 | 上海市电力公司 | Power cable of layering insulation stranded conductor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54119684A (en) * | 1978-03-09 | 1979-09-17 | Hitachi Cable Ltd | Split conductor for power cable |
-
2011
- 2011-04-27 CN CN201110107647.0A patent/CN102760521B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598104Y (en) * | 2003-02-13 | 2004-01-07 | 河北宝丰线缆有限公司 | Big section copper core fire-dividing conductor |
| CN101620898A (en) * | 2009-08-10 | 2010-01-06 | 杭州电缆有限公司 | Production method for crosslinked polyethylene insulating power cable for ultra-high voltage aluminum core segmental conductor |
| CN201607992U (en) * | 2010-03-10 | 2010-10-13 | 安徽宏源特种电缆集团有限公司 | Novel shielded power cable |
| CN101950625A (en) * | 2010-09-26 | 2011-01-19 | 杭州电缆有限公司 | Power cable |
| CN202093879U (en) * | 2011-04-27 | 2011-12-28 | 上海市电力公司 | Power cable of layering insulation stranded conductor |
Non-Patent Citations (1)
| Title |
|---|
| JP昭54-119684A 1979.09.17 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102760521A (en) | 2012-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. SHANGHAI ELECTRIC POWER D Free format text: FORMER OWNER: SHANGHAI ELECTRIC POWER DESIGN INSTITUTE LIMITED SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Effective date: 20130110 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130110 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Applicant after: Shanghai Electric Power Design Institute Limited Applicant after: Shanghai Electric Cable Research Institute Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant before: Shanghai Electric Power Corporation Applicant before: Shanghai Electric Power Design Institute Limited Applicant before: Shanghai Electric Cable Research Institute |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |