CN203218023U - 500 kv crosslinked polyethylene insulated cable - Google Patents
500 kv crosslinked polyethylene insulated cable Download PDFInfo
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- CN203218023U CN203218023U CN 201320207721 CN201320207721U CN203218023U CN 203218023 U CN203218023 U CN 203218023U CN 201320207721 CN201320207721 CN 201320207721 CN 201320207721 U CN201320207721 U CN 201320207721U CN 203218023 U CN203218023 U CN 203218023U
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- insulated cable
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- polyethylene insulated
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Abstract
The utility model relates to a 500 kV crosslinked polyethylene insulated cable with water resistance performance. The technical scheme is as follows: the 550 kV crosslinked polyethylene insulated cable comprises: a conductor (1), an insulation layer, a semiconducting shielding composite layer (5), a metal sheath (6), a 1 # sheath (7) and a 2# sheath (8); the insulation layer comprises an inner insulation layer (2), an intermediate insulation layer (3) and an outer insulation layer (4), wherein the intermediate insulation layer (3) is a crosslinked polyethylene layer; and the 1 # sheath (7) and the 2# sheath (8) are extruded in a two-layer co-extrusion method outside the metal sheath (6) which is provided with an anticorrosive layer. The 550 kV crosslinked polyethylene insulated cable is simple in structure, great in electrical and mechanical performance, excellent in water resistance and anticorrosion performance, and capable of meeting different environment requirements.
Description
Technical field
The utility model relates to a kind of power cable, particularly has the 500kV cross-linked polyethylene insulated cable of block-water performance.The utility model belongs to the cables manufacturing applied technical field.
Background technology
Because economic policy and the market demand, from domestic first introduction 500kV cross-linked polyethylene insulated cable in 1997 since waste level ground, sky hydroenergy storage station is used, the 500kV hydroenergy storage station is in full flourish in the whole nation like rain the back spring bamboo, the development of these 500kV storage stations is for the 500kV power cable with cross-linked polyethylene insulation has brought unprecedented development.
500kV is that the high-voltage cross-linking polythene cable of representative mainly is made of conductor, crosslinked polyetylene insulated layer and oversheath.As: Chinese patent publication number CN 102751035A discloses a kind of waterproofing type high-voltage cross-linking polythene insulated power cable, and it is disposed with conductor, packed layer, lapping layer, conductor shield, insulating barrier, insulation screen, resilient coating, lapping layer, the vertical covering of argon arc, anticorrosive coat, outer jacket and coat from inside to outside.
The main deficiency of prior art: complex structure.
In addition, " a kind of novel power cable semi-conductive screen waterstop ", being published in 03 phase in 2008 " electric wire " discloses a kind of buffering semi-conductive screen band that blocks water, and it integrates uniform electric field, buffer mechanism stress and water stop function, can prolong cable useful life.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and a kind of 500kV cross-linked polyethylene insulated cable simple in structure is provided.
For realizing above-mentioned technical purpose, the utility model by the following technical solutions: a kind of 500kV cross-linked polyethylene insulated cable, include conductor, insulating barrier, semi-conductive screen composite bed, metallic sheath, 1# sheath and 2# sheath, wherein:
---described insulating barrier is made of inner insulating layer, middle insulating barrier and external insulation layer, middle insulating barrier is the crosslinked polyethylene layer, inner insulating layer, middle insulating barrier and external insulation layer are extruded on the described conductor in three-layer co-extruded mode, and described conductor and inner insulating layer, middle insulating barrier, external insulation layer constitute insulated wire cores jointly;
---the internal layer of described semi-conductive screen composite bed is waterstop, the skin of described semi-conductive screen composite bed is to be embedded with conduction golden silk cloth wiry, the waterstop lapped insulation core of internal layer, the conduction golden silk cloth is extruded with described metallic sheath outward, and described metallic sheath outer surface is provided with anticorrosive coat;
---described 1# sheath is insulating sleeve, and described 2# sheath is the semiconductive sheath, and described 1# sheath and 2# sheath are extruded on the metallic sheath that is provided with anticorrosive coat in two layers of co-extrusion mode, and the 2# jacket outer surface is coated with graphite.
Further, described conductor is that area of section is 800mm
2～2500mm
2Conductor, and described conductor is five to cut apart the stranded conductor that forms of no center cell.
Further, described insulating sleeve is pe sheath or pvc sheath.
Further, described metallic sheath is aluminium sheath, and described anticorrosive coat is bitumen layer.
Further, described aluminium sheath is the aluminium sheath that has the helical form embossing.
Further, described waterstop is the buffering semi-conductive screen band that blocks water, and the wire in the described conduction golden silk cloth is tinned copper wire, and described semi-conductive screen composite bed thickness is 2.0mm～2.5mm.
Further, described inner insulating layer average thickness is 2.5mm.
Further, described external insulation layer average thickness is 1.5mm.
Further, the core shift degree of described middle insulating barrier is greater than 0 and less than 4%.
Benefit after the employing technique scheme:
(1) insulating barrier adopt three layers extrude, 1# sheath and 2# sheath adopt two layers extrude, structures such as semi-conductive screen composite bed, metallic sheath, anticorrosive coat effectively make up, simple in structure, and electric, good mechanical property, can satisfy various environmental requirements, good electrical property, block-water performance is good, Corrosion Protection is superior.
(2) five cut apart the stranded conductor that forms of no center cell, and area of section is 800mm
2～2500mm
2, guarantee the energising performance, improve block-water performance.
(3) internal layer is that waterstop, skin are the semi-conductive screen composite beds that is embedded with conduction golden silk cloth wiry, realizes the triple role that blocks water, shields and cushion.
(4) aluminium sheath that extrudes is realized seamless connection, ensures intensity, improves block-water performance.The helical form embossing further is beneficial to bending.
(5) insulating barrier core shift degree ensures insulation effect greater than 0 and less than 4% in.
(6) graphite can improve the semiconduction of cable outer layer.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, conductor, 2, inner insulating layer, 3, middle insulating barrier, 4, external insulation layer, 5, the semi-conductive screen composite bed, 6, metallic sheath, 6-1, anticorrosive coat, 7, the 1# sheath, 8, the 2# sheath, 9, insulated wire cores.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done explanation in further detail.
Embodiment one
As shown in Figure 1, a kind of 500kV cross-linked polyethylene insulated cable includes conductor 1, insulating barrier, semi-conductive screen composite bed 5, metallic sheath 6,1# sheath 7 and 2# sheath 8, wherein:
---insulating barrier is made of inner insulating layer 2, middle insulating barrier 3 and external insulation layer 4, inner insulating layer 2, middle insulating barrier 3 and external insulation layer 4 are extruded on the conductor 1 in three-layer co-extruded mode, conductor 1 and inner insulating layer 2, middle insulating barrier 3, external insulation layer 4 common formation insulated wire cores 9, specify, inner insulating layer 2, middle insulating barrier 3 and external insulation layer 4 are extruded on the conductor 1 with the mode of production of three-layer co-extruded, dry cross-linking, continuous vulcanization;
---the area of section of conductor 1 is 800 mm
2～2500mm
2, and conductor 1 is five to cut apart the stranded conductor that forms of no center cell, roundness is not less than 98.5%;
---inner insulating layer is selected semi-conductive shielding material for use, the preferred 2.5mm of inner insulating layer 2 average thicknesss, and external insulation layer is selected semi-conductive shielding material for use, the preferred 1.5mm of external insulation layer 4 average thicknesss;
---middle insulating barrier 3 is crosslinked polyethylene layers, and the core shift degree of middle insulating barrier 3 can be in following ranges: greater than 0 and less than 4%;
---the internal layer of semi-conductive screen composite bed 5 is waterstops, the skin of semi-conductive screen composite bed 5 is to be embedded with conduction golden silk cloth wiry, this waterstop is the buffering semi-conductive screen band that blocks water, wire in this conduction golden silk cloth is tinned copper wire, the thickness of semi-conductive screen composite bed 5 is 2.0mm～2.5mm, the waterstop lapped insulation core 9 of internal layer, the conduction golden silk cloth is extruded with metallic sheath 6 outward, metallic sheath 6 outer surfaces are provided with anticorrosive coat 6-1, the aluminium sheath of metallic sheath 6 preferred helical form embossings, the preferred bitumen layer of anticorrosive coat 6-1;
---1# sheath 7 is insulating sleeves, and 2# sheath 8 is semiconductive sheaths, and 1# sheath 7 and 2# sheath 8 are extruded in two layers of co-extrusion mode on the metallic sheath 6 that is provided with anticorrosive coat, and 2# sheath 8 outer surfaces are coated with graphite; This insulating sleeve preferably polyethylene sheath or pvc sheath; This semiconductive sheath can but be not limited to contain the sheath of semiconductive graphite.
The utility model is not limited to above-described embodiment, and the technical scheme that all employings are equal to or the equivalence replacement forms all falls into the protection range that the utility model requires.
Claims (9)
1. a 500kV cross-linked polyethylene insulated cable includes conductor (1), insulating barrier, semi-conductive screen composite bed (5), metallic sheath (6), 1# sheath (7) and 2# sheath (8), it is characterized in that:
---described insulating barrier is made of inner insulating layer (2), middle insulating barrier (3) and external insulation layer (4), middle insulating barrier (3) is the crosslinked polyethylene layer, inner insulating layer (2), middle insulating barrier (3) and external insulation layer (4) are extruded on the described conductor (1) in three-layer co-extruded mode, and described conductor (1) and inner insulating layer (2), middle insulating barrier (3), external insulation layer (4) constitute insulated wire cores (9) jointly;
---the internal layer of described semi-conductive screen composite bed (5) is waterstop, the skin of described semi-conductive screen composite bed (5) is to be embedded with conduction golden silk cloth wiry, the waterstop lapped insulation core (9) of internal layer, the conduction golden silk cloth is extruded with described metallic sheath (6) outward, and described metallic sheath (6) outer surface is provided with anticorrosive coat (6-1);
---described 1# sheath (7) is insulating sleeve, described 2# sheath (8) is the semiconductive sheath, described 1# sheath (7) and 2# sheath (8) are extruded in two layers of co-extrusion mode on the metallic sheath (6) that is provided with anticorrosive coat, and 2# sheath (8) outer surface is coated with graphite.
2. 500kV cross-linked polyethylene insulated cable according to claim 1, it is characterized in that: described conductor (1) is that area of section is 800 mm
2～2500mm
2Conductor, and described conductor (1) is five to cut apart the stranded conductor that forms of no center cell.
3. 500kV cross-linked polyethylene insulated cable according to claim 1, it is characterized in that: described insulating sleeve is pe sheath or pvc sheath.
4. 500kV cross-linked polyethylene insulated cable according to claim 1, it is characterized in that: described metallic sheath (6) is aluminium sheath, described anticorrosive coat (6-1) is bitumen layer.
5. 500kV cross-linked polyethylene insulated cable according to claim 4, it is characterized in that: described aluminium sheath is the aluminium sheath that has the helical form embossing.
6. 500kV cross-linked polyethylene insulated cable according to claim 1, it is characterized in that: described waterstop is the buffering semi-conductive screen band that blocks water, wire in the described conduction golden silk cloth is tinned copper wire, and described semi-conductive screen composite bed (5) thickness is 2.0mm～2.5mm.
7. 500kV cross-linked polyethylene insulated cable according to claim 1, it is characterized in that: described inner insulating layer (2) average thickness is 2.5mm.
8. 500kV cross-linked polyethylene insulated cable according to claim 1, it is characterized in that: described external insulation layer (4) average thickness is 1.5mm.
9. 500kV cross-linked polyethylene insulated cable according to claim 1 is characterized in that: the core shift degree of insulating barrier (3) is greater than 0 and less than 4% in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320207721 CN203218023U (en) | 2013-04-23 | 2013-04-23 | 500 kv crosslinked polyethylene insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320207721 CN203218023U (en) | 2013-04-23 | 2013-04-23 | 500 kv crosslinked polyethylene insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218023U true CN203218023U (en) | 2013-09-25 |
Family
ID=49207537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320207721 Expired - Lifetime CN203218023U (en) | 2013-04-23 | 2013-04-23 | 500 kv crosslinked polyethylene insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203218023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788733A (en) * | 2015-12-24 | 2016-07-20 | 上海胜华电气股份有限公司 | Large-section mineral-insulated multi-core branched fireproof cable |
| CN111627603A (en) * | 2019-02-27 | 2020-09-04 | 云南多宝电缆集团股份有限公司 | Long-service-life three-layer co-extrusion high-grade home decoration line and production method thereof |
-
2013
- 2013-04-23 CN CN 201320207721 patent/CN203218023U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788733A (en) * | 2015-12-24 | 2016-07-20 | 上海胜华电气股份有限公司 | Large-section mineral-insulated multi-core branched fireproof cable |
| CN111627603A (en) * | 2019-02-27 | 2020-09-04 | 云南多宝电缆集团股份有限公司 | Long-service-life three-layer co-extrusion high-grade home decoration line and production method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |