CN202110874U - High voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable - Google Patents
High voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable Download PDFInfo
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- CN202110874U CN202110874U CN2011202177722U CN201120217772U CN202110874U CN 202110874 U CN202110874 U CN 202110874U CN 2011202177722 U CN2011202177722 U CN 2011202177722U CN 201120217772 U CN201120217772 U CN 201120217772U CN 202110874 U CN202110874 U CN 202110874U
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Abstract
The utility model discloses a high voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable, comprising a cable core, a conductor shielding layer, a cross-linked polyethylene insulating layer, an insulating shielding layer, a water stopping belt, a metal sheath layer, an outer sheath layer, and a semiconductor graphite coating, wherein the outer side of the cable core is clad, from inner side to outer side in order, by the conductor shielding layer, the cross-linked polyethylene insulating layer, the insulating shielding layer, the water stopping belt, the metal sheath layer, the outer sheath layer, and the semiconductor graphite coating; the water stopping belt wraps the outside of the insulating shielding layer in a manner of winding, the outer side of the water stopping belt is connected with the metal sheath layer, and the water stopping belt is a water stopping belt with tinned copper wire embedded therein. The tinned copper wire employed by the utility model is a good conductor for heat and electricity, has excellent conductivity and heat radiation effect, thereby greatly reducing the thermal resistance of the water stopping belt and increasing the current-carrying capacity of the cable, and the high voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable has not only excellent heat resistance performance, but also excellent electrical performance, thereby increasing the leakage current bearing capability of the cable and prolonging the service life of the cable.
Description
Technical field:
The utility model relates to the electric power transfer field, and particularly a kind of embedded waterstop can improve the extraordinary power cable of high pressure, ultra-high voltage cross-linking polyethylene insulation of the ampacity of cable.
Background technology:
In general high voltage and ultrahigh voltage power cable, material itself expanded when waterstop was met water, with moisture absorption; And produce fluid-tight pasty masses; Stoped water to flow, play the outer effect that vertically blocks water of insulation, and soft material has also played the effect of resilient coating along the vertical of cable.As the part between insulation semi-conductive screen and the metallic sheath, common waterstop exists but that conduction is bad, the shortcoming of poor radiation, can't further improve current-carrying capacity of cable.
For example, application number is " 200820211806.5 ", and publication number is that the Chinese patent of " 201378468 " discloses " high pressure, the ultra-high voltage cross-linking polyethylene-insulated power cable of band non-linear shielding layer "; Disclose a kind of high pressure with non-linear shielding layer, ultra-high voltage cross-linking polyethylene-insulated power cable, it belongs to the electric power transfer field, is specifically related to a kind of high pressure, ultra-high voltage cross-linking polyethylene-insulated power cable.High pressure, the ultra-high voltage cross-linking polyethylene-insulated power cable of band non-linear shielding layer; Its interior non-linear shielding layer extruding is coated between inner semiconductor layer and the crosslinked polyetylene insulated layer; And inner semiconductor layer and crosslinked polyetylene insulated layer separated; Outer non-linear shielding layer extruding is coated between crosslinked polyetylene insulated layer and the out semiconductor layer, and crosslinked polyetylene insulated layer and out semiconductor layer are separated.First resilient coating of this invention is the elasticity expanding material that vertically blocks water, and common waterstop exists but that conduction is bad, the shortcoming of poor radiation, can't further improve current-carrying capacity of cable.
The utility model content:
The purpose of the utility model is to overcome above-mentioned deficiency, proposes a kind of high pressure, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation.It is the good conductor of heat and electricity that the utility model adopts tinned copper wire, and conductivity is good, thermal diffusivity good, greatly reduces the thermal resistance of waterstop, thereby has improved the ampacity of cable; Not only have good heat-resisting property, also have good electric property, improved the bearing capacity of cable, can prolong the useful life of cable leakage current.
The utility model adopts following technical scheme to realize:
A kind of high pressure, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation; It comprises core, conductor shield, crosslinked polyetylene insulated layer, insulation screen, waterstop, metal sheath layer, external sheath layer, semiconductive equadag coating; The outside of said core is by from inside to outside order coating conductor screen, crosslinked polyetylene insulated layer, insulation screen, waterstop, metal sheath layer, external sheath layer, semiconductive equadag coating successively; It is characterized in that: said waterstop is wrapped outside insulation screen, and the outside links to each other with metal sheath layer; Said waterstop is embedded tinned copper wire waterstop.
Described core is copper conductor or aluminum conductor.
Described metal sheath layer is a wrinkle aluminum alloy sheath layer.
Described external sheath layer is the PVC restrictive coating.
The advantage of the utility model is:
1, the utility model employing tinned copper wire is heat and electric good conductor; Serve as the medium that contacts between insulation shielding and the metallic sheath; Greatly reduce the thermal resistance of waterstop; The heat that produces when making the cable operation leaves to the external world rapidly, when cable produces bigger heat in the unit interval, also can reach hot road balance, thereby improve the ampacity of cable.Simultaneously; Tinned copper wire makes thoroughly conducting between insulation screen and the metal sheath layer; Make not have potential difference between insulation screen and the metal sheath layer, Leakage Current can flow into metal sheath layer smoothly, has improved the bearing capacity of cable to leakage current; Reduce the probability that accident takes place, can prolong the useful life of cable; Embedded tinned copper wire waterstop quality is soft, does not lose the resilient coating effect.
2, to adopt core be copper conductor or aluminum conductor to the utility model, can utilize pressing of they stranded circular configuration or the milliken conductor structure use, practical, performance is good.
3, the utility model adopts wrinkle aluminum alloy sheath layer as metal sheath layer, utilizes the high-melting-point of aluminum alloy materials to play heat-resisting effect, has solved high-tension cable and has used problem in the higher use occasion of ambient temperature.
4, the utility model adopts the PVC restrictive coating as external sheath layer, has improved electric property.
Description of drawings
Fig. 1 is the utility model structural representation
Be labeled as among the figure: 1, core, 2, conductor shield, 3, crosslinked polyetylene insulated layer, 4, insulation screen, 5, waterstop, 6, metal sheath layer, 7, external sheath layer, 8, the semiconductive equadag coating.
Embodiment
Embodiment 1:
A kind of high pressure, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation; It comprises core 1, conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4, waterstop 5, metal sheath layer 6, external sheath layer 7, semiconductive equadag coating 8; The outside of said core 1 is by from inside to outside order coating conductor screen 2 successively, crosslinked polyetylene insulated layer 3, insulation screen 4, waterstop 5, metal sheath layer 6, external sheath layer 7, semiconductive equadag coating 8; Said waterstop 5 is wrapped outside insulation screen 4, and the outside links to each other with metal sheath layer 6; Said waterstop 5 is embedded tinned copper wire waterstop.
In the utility model, described core 1 is a copper conductor, and described metal sheath layer 6 is a wrinkle aluminum alloy sheath layer; Described external sheath layer 7 is the PVC restrictive coating.
The utility model in use, structure and common power cable with cross-linked polyethylene insulation structure are unanimous on the whole, wrinkle aluminum alloy sheath layer welds with argon arc welding machine; Tinned copper wire is the good conductor of heat and electricity; Serve as the medium that contacts between insulation shielding and the metallic sheath, greatly reduce the thermal resistance of waterstop, the heat that produces when making the cable operation leaves to the external world rapidly; When cable produces bigger heat in the unit interval, also can reach hot road balance, thereby improve the ampacity of cable; Tinned copper wire makes thoroughly conducting between insulation screen 4 and the metal sheath layer 6, makes between insulation screen 4 and the metal sheath layer 6 not have potential difference, and Leakage Current can flow into metal sheath layer 6 smoothly; This novel waterstop and common waterstop processing performance do not have different greatly, needn't change production technology, and implementation process is simple and easy to do, but can improve the cable electrical performance greatly, have improved the bearing capacity of cable to leakage current yet; Reduce the probability that accident takes place, can prolong the useful life of cable.
The utility model is applicable to the various occasions that need high pressure, ultrahigh voltage power transmission.
Embodiment 2:
A kind of high pressure, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation; It comprises core 1, conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4, waterstop 5, metal sheath layer 6, external sheath layer 7, semiconductive equadag coating 8; The outside of said core 1 is by from inside to outside order coating conductor screen 2 successively, crosslinked polyetylene insulated layer 3, insulation screen 4, waterstop 5, metal sheath layer 6, external sheath layer 7, semiconductive equadag coating 8; Said waterstop 5 is wrapped outside insulation screen 4, and the outside links to each other with metal sheath layer 6; Said waterstop 5 is embedded tinned copper wire waterstop.
In the utility model, described core 1 is an aluminum conductor, and described metal sheath layer 6 is a wrinkle aluminum alloy sheath layer; Described external sheath layer 7 is the PVC restrictive coating.
Claims (4)
1. a high pressure, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation; It comprises core (1), conductor shield (2), crosslinked polyetylene insulated layer (3), insulation screen (4), waterstop (5); Metal sheath layer (6), external sheath layer (7), semiconductive equadag coating (8); The outside of said core (1) is by from inside to outside order coating conductor screen (2) successively, crosslinked polyetylene insulated layer (3), insulation screen (4), waterstop (5); Metal sheath layer (6), external sheath layer (7), semiconductive equadag coating (8); It is characterized in that: said waterstop (5) is wrapped outside insulation screen (5), and the outside links to each other with metal sheath layer (5); Said waterstop (5) is embedded tinned copper wire waterstop.
2. a kind of high pressure according to claim 1, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation, it is characterized in that: described core (1) is copper conductor or aluminum conductor.
3. a kind of high pressure according to claim 1, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation, it is characterized in that: described metal sheath layer (6) is a wrinkle aluminum alloy sheath layer.
4. a kind of high pressure according to claim 1, the extraordinary power cable of ultra-high voltage cross-linking polyethylene insulation, it is characterized in that: described external sheath layer (7) is the PVC restrictive coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202177722U CN202110874U (en) | 2011-06-24 | 2011-06-24 | High voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202177722U CN202110874U (en) | 2011-06-24 | 2011-06-24 | High voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110874U true CN202110874U (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202177722U Expired - Lifetime CN202110874U (en) | 2011-06-24 | 2011-06-24 | High voltage ultrahigh voltage cross-linked polyethylene insulating extraordinary power cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN202110874U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425083A (en) * | 2013-09-10 | 2015-03-18 | 国家电网公司 | Carbon fiber enhanced type aluminum-alloy high-voltage composite temperature measuring cable |
| CN105161195A (en) * | 2015-10-16 | 2015-12-16 | 无锡市曙光电缆有限公司 | Environment-friendly superhigh pressure crosslinking polyethylene-insulated power cable |
| CN107464616A (en) * | 2017-09-05 | 2017-12-12 | 福建通宇电缆有限公司 | A kind of water proof fire retardant composite cable |
-
2011
- 2011-06-24 CN CN2011202177722U patent/CN202110874U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425083A (en) * | 2013-09-10 | 2015-03-18 | 国家电网公司 | Carbon fiber enhanced type aluminum-alloy high-voltage composite temperature measuring cable |
| CN105161195A (en) * | 2015-10-16 | 2015-12-16 | 无锡市曙光电缆有限公司 | Environment-friendly superhigh pressure crosslinking polyethylene-insulated power cable |
| CN107464616A (en) * | 2017-09-05 | 2017-12-12 | 福建通宇电缆有限公司 | A kind of water proof fire retardant composite cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 18 Yingbin Avenue, Leshan Hi-tech Development Zone, Sichuan 614000 Patentee after: Shang Wei Limited by Share Ltd Address before: No. 18 Yingbin Avenue, Leshan Hi-tech Development Zone, Sichuan 614000 Patentee before: Sichuan Mingxing Cable Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |