CN202677945U - An anti-water-tree medium-pressure crosslinked single-core cable - Google Patents
An anti-water-tree medium-pressure crosslinked single-core cable Download PDFInfo
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- CN202677945U CN202677945U CN 201220355820 CN201220355820U CN202677945U CN 202677945 U CN202677945 U CN 202677945U CN 201220355820 CN201220355820 CN 201220355820 CN 201220355820 U CN201220355820 U CN 201220355820U CN 202677945 U CN202677945 U CN 202677945U
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Abstract
The utility model discloses an anti-water-tree medium-pressure crosslinked single-core cable which is characterized in that a water-resistant conductor is normally twisted by multiple flexible copper wires or aluminum wires and water-resistant spun yarn, that an insulating wire core is formed by a conductor shielding layer, an insulating layer, and an insulation shielding layer which are co-extruded on the water-resistant conductor from inside to outside, that an overlapping winding semiconductive water-resistant layer, a copper tape layer, a water-resistant tape, and a longitudinally-wrapped aluminum plastic tape layer are successively arranged on the insulation shielding layer from inside to outside, and that an inner sheath layer formed by extruded PE plastic, a armor layer formed by wrapped double-layer metal tape, and an outer sheath layer formed by extruded PE plastic are successively arranged on the longitudinally-wrapped aluminum plastic tape layer from inside to outside. The insulating layer uses anti-water-tree crosslinked polyethylene TR-XLPE as material. The anti-water-tree medium-pressure crosslinked single-core cable has characteristics of little structure, light weight, water resistance, and external force extrusion resistance and can be used in long-distance laying.
Description
Technical field
The utility model relates to a kind of middle pressure crosslinked cable, relates in particular in a kind of anti-water tree and presses crosslinked single-core cable, belongs to technical field of electric wires and cables.
Background technology
Press middle pressure crosslinked polyethylene (XLPE) insulated power cable of power transmission and transformation system extensive application all in underground operation among 6～35 kV, As time goes on, extraneous moisture can be penetrated into gradually in the insulation of cable and grow Cheng Shuishu, As time goes on continued growth of water tree meeting, finally cause insulation breakdown, become the major reason of cable early damage.
Cross-linking polyethylene materials has superior electrical property and mechanical performance, easily processing characteristics and very low price make it the preferred material made at middle pressure, high pressure and extra-high-tension cable.But it issues the unboiled water tree and causes cable breakdown at steam and highfield, has greatly affected security of operation and the useful life of cable.
Along with the harmfulness of crosslinked cable water tree progressively is familiar with by cable user, increasing customer requirements cable has anti-water tree function, and anti-water tree crosslinked cable is the main trend of cable industry development.Developing to have in the anti-water tree presses crosslinked cable to have important economic worth and social effect.
The crosslinked cable of pressure and above easily produces the water tree problem in the solution, will solve exactly the problem that reduces or stop to exist moisture content in the cable conductor with insulating barrier outward, will consider simultaneously the chance that common crosslinked polyethylene material itself exists generation water to set.
Chinese patent 97247583.4 disclosed Water-proof medium voltage interlink cables, its structure can only play the radial water-resisting effect, can not solve longitudinal water-blocking, and " water tree " problem of insulating material itself generation.
Chinese patent 200420062458.1 disclosed water-blocking and water-risistance power cables, its conductor gap-fill waterproofing admixture and apply preservative oil at conductive surface, complex process, the drawback such as production efficiency is low, and the production scene is very dirty and messy.The water tree problem of simultaneously insulating material generation itself is not resolved yet.
The disclosed anti-water tree power cable with cross-linked polyethylene insulation that entirely blocks water of Chinese patent 200720021040.X, its water-blocking conductor principle is to adopt at the stranded between layers overlapping lapped insulation waterstop of single metal wire, the one, this technique conductor production difficulty is large, the 2nd, it is regular stranded or informal stranded not illustrate that conductor adopts, if informal stranded, space between conductor is still very large, brings a large amount of steam into because air exists, and block-water effect is unsatisfactory simultaneously.In addition, " large space " block-water effect between the three-core cable insulated wire cores is unsatisfactory, and particularly in end, steam still is easy to be penetrated into inside.
Chinese patent 200920079116.3 disclosed anti-water tree crosslinked cables, but its insulating barrier has adopted the PE Insulation Material, has obvious problem, does not belong to crosslinked cable.What this patent related to simultaneously is the low-voltage cable.
Summary of the invention
The utility model purpose provides in a kind of anti-water tree of excellent performance and presses crosslinked single-core cable, adopts anti-water tree crosslinked polyethylene insulation material, and at cable multiple waterproof construction is set vertically and radially.
The utility model is that the technical solution problem adopts following technical scheme:
Press the design feature of crosslinked single-core cable to be in the anti-water tree of the utility model: by many soft copper silks or aluminium wire and the regular stranded water-blocking conductor that consists of of the spun yarn that blocks water, three-layer co-extruded formation conductor shield from inside to outside on described water-blocking conductor, the insulated wire cores that insulating barrier and insulation screen form, on described insulated wire cores, set gradually from inside to outside overlapping wrapped semiconductive water blocking tape layer, the copper strips layer, waterstop and vertical alclad are moulded belt, mould to set gradually from inside to outside on the belt at described vertical alclad to extrude the inner restrictive coating that the PE plastics form, the armour of the wrapped formation of bimetallic strip and the external sheath layer that extrudes the formation of PE plastics; Described insulating barrier is as material take anti-water tree type crosslinked polyethylene material TR-XLPE.
Press the design feature of crosslinked single-core cable also to be in the anti-water tree of the utility model:
It is that employing thickness is the two-sided PE film composite aluminium plastic band of 0.15-0.35mm that described vertical alclad is moulded belt, and aluminum layer thickness is 0.14-0.34mm.
Described armour is to adopt stainless steel band or aluminum alloy strip.
Described external sheath layer is to adopt weatherability linear polyethylene plastics LLPE or high density polyethylene (HDPE) material HDPE.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the regular lay configuration gap of water-blocking conductor is little in the utility model, and by improving regular pressing coefficient and more can improve block-water effect in stranded of conductor, processing is simple, and is easy to control;
2, insulating barrier adopts anti-water tree type crosslinked polyethylene material TR-XLPE in the utility model, with respect to general cross-linked polyethylene insulating material, can prevent effectively that extraneous moisture penetration from growing Cheng Shuishu in the insulating barrier of cable;
In 3 the utility model radially waterproofing design adopted vertical alclad to mould belt, two-sided PE film composite aluminium plastic band is put up face at vertical bag can be fine bonding, aluminum layer thickness reaches 0.14-0.34 mm simultaneously, good water-proof effect is easy to process;
Armour adopts stainless steel band or aluminum alloy strip in 4 the utility model, is nonmagnetic metal, has both made cable obtain mechanical protection, reduces again eddy current and produces, and improves cable transmission electric energy quality;
5, external sheath layer adopts weatherability linear polyethylene plastics LLPE or high density polyethylene (HDPE) material HDPE material to extrude in the utility model, and the waterproof of material own and anticorrosive property are good, easily processing, and material is easy to get, and has reduced its manufacturing cost.
Description of drawings
Fig. 1 is the utility model list core pattern construction of cable schematic diagram.
Fig. 1 label: 1 water-blocking conductor; 2 conductor shields; 3 insulating barriers; 4 insulation screens; 5 semiconductive water blocking tape layers; 6 copper strips layers; 7 waterstops; 8 vertical alclads are moulded belt; 9 inner restrictive coatings; 10 armours; 11 external sheath layers.
Embodiment
Referring to Fig. 1, pressing crosslinked single-core cable in the anti-water tree in the present embodiment is that the conductor compacting coefficient is not less than 0.9 by many soft copper silks or aluminium wire and the regular stranded water-blocking conductor 1 that consists of of the spun yarn that blocks water; The insulated wire cores that three-layer co-extruded formation conductor shield 2, insulating barrier 3 and insulation screen 4 from inside to outside forms on water-blocking conductor 1, on described insulated wire cores, set gradually from inside to outside overlapping wrapped semiconductive water blocking tape layer 5, copper strips layer 6, waterstop 7 and vertical alclad and mould belt 8, mould the armour 10 that sets gradually from inside to outside the inner restrictive coating 9 that extrudes the PE plastics and form, the wrapped formation of bimetallic strip on the belt 8 and extrude the external sheath layer 11 that the PE plastics form at vertical alclad; Insulating barrier 3 is as material take anti-water tree type crosslinked polyethylene material TR-XLPE.
In the implementation, it is that employing thickness is the two-sided PE film composite aluminium plastic band of 0.15-0.35mm that vertical alclad is moulded belt 8, and aluminum layer thickness is 0.14-0.34mm; Armour 10 is to adopt stainless steel band or aluminum alloy strip; External sheath layer 11 is to adopt weatherability linear polyethylene plastics LLPE or high density polyethylene (HDPE) material HDPE.
Claims (4)
1. press crosslinked single-core cable in an anti-water tree, it is characterized in that by many soft copper silks or aluminium wire and the regular stranded water-blocking conductor (1) that consists of of the spun yarn that blocks water, at the upper three-layer co-extruded formation conductor shield (2) from inside to outside of described water-blocking conductor (1), the insulated wire cores that insulating barrier (3) and insulation screen (4) form, on described insulated wire cores, set gradually from inside to outside overlapping wrapped semiconductive water blocking tape layer (5), copper strips layer (6), waterstop (7) and vertical alclad are moulded belt (8), mould to set gradually from inside to outside on the belt (8) at described vertical alclad to extrude the inner restrictive coating (9) that the PE plastics form, the armour of the wrapped formation of bimetallic strip (10) and extrude the external sheath layer (11) that the PE plastics form; Described insulating barrier (3) is as material take anti-water tree type crosslinked polyethylene material TR-XLPE.
2. press crosslinked single-core cable in the anti-water tree according to claim 1, it is characterized in that it is that employing thickness is the two-sided PE film composite aluminium plastic band of 0.15-0.35mm that described vertical alclad is moulded belt (8), aluminum layer thickness is 0.14-0.34mm.
3. press crosslinked single-core cable in the anti-water tree according to claim 1, it is characterized in that described armour (10) is to adopt stainless steel band or aluminum alloy strip.
4. press crosslinked single-core cable in the anti-water tree according to claim 1, it is characterized in that described external sheath layer (11) is to adopt weatherability linear polyethylene plastics LLPE or high density polyethylene (HDPE) material HDPE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355820 CN202677945U (en) | 2012-07-20 | 2012-07-20 | An anti-water-tree medium-pressure crosslinked single-core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355820 CN202677945U (en) | 2012-07-20 | 2012-07-20 | An anti-water-tree medium-pressure crosslinked single-core cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677945U true CN202677945U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220355820 Expired - Lifetime CN202677945U (en) | 2012-07-20 | 2012-07-20 | An anti-water-tree medium-pressure crosslinked single-core cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN202677945U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489528A (en) * | 2013-09-16 | 2014-01-01 | 无锡市长城电线电缆有限公司 | Crosslinked polyethylene insulating and water-blocking power cable |
| CN103700442A (en) * | 2013-12-04 | 2014-04-02 | 江苏南瑞淮胜电缆有限公司 | Water-blocking medium voltage aluminum alloy power cable |
| CN104810107A (en) * | 2014-10-11 | 2015-07-29 | 安徽明星电缆有限公司 | Novel electrified railway cable and manufacture process thereof |
| CN106683756A (en) * | 2016-11-11 | 2017-05-17 | 湖北龙腾红旗电缆(集团)有限公司 | Comprehensive protection-type medium-voltage subway cable |
| CN108461196A (en) * | 2018-04-20 | 2018-08-28 | 山东森联能源科技有限公司 | A kind of anticorrosive, stretch-proof, direct-burried water-resisting medium-voltage cable |
-
2012
- 2012-07-20 CN CN 201220355820 patent/CN202677945U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489528A (en) * | 2013-09-16 | 2014-01-01 | 无锡市长城电线电缆有限公司 | Crosslinked polyethylene insulating and water-blocking power cable |
| CN103700442A (en) * | 2013-12-04 | 2014-04-02 | 江苏南瑞淮胜电缆有限公司 | Water-blocking medium voltage aluminum alloy power cable |
| CN104810107A (en) * | 2014-10-11 | 2015-07-29 | 安徽明星电缆有限公司 | Novel electrified railway cable and manufacture process thereof |
| CN106683756A (en) * | 2016-11-11 | 2017-05-17 | 湖北龙腾红旗电缆(集团)有限公司 | Comprehensive protection-type medium-voltage subway cable |
| CN108461196A (en) * | 2018-04-20 | 2018-08-28 | 山东森联能源科技有限公司 | A kind of anticorrosive, stretch-proof, direct-burried water-resisting medium-voltage cable |
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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: 20130116 |