CN208673791U - Water repellent electric cable is pressed in one kind - Google Patents
Water repellent electric cable is pressed in one kind Download PDFInfo
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- CN208673791U CN208673791U CN201820547154.6U CN201820547154U CN208673791U CN 208673791 U CN208673791 U CN 208673791U CN 201820547154 U CN201820547154 U CN 201820547154U CN 208673791 U CN208673791 U CN 208673791U
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Abstract
The utility model, which provides, presses water repellent electric cable in one kind, include multiply core, and core includes longitudinal water-blocking copper conductor, and longitudinal water-blocking copper conductor is the molded line conductor that special-shaped monofilament is twisted, and is provided with the first semiconductor waterstop between each twisted layer；Longitudinal water-blocking copper conductor is coated with semiconductive and blocks water binding strap, and semiconductive blocks water binding strap outer layer, co-extrusion conductor shield, crosslinked polyetylene insulated layer, insulation screen；It is surrounded with the second semiconductor waterstop outside insulation screen, the second semiconductor waterstop outer layer is overlapped wrapped metal screen layer；Multiply core is twisted into core, and core gap uses non-woven fabrics band to tighten outside by the gasket for packing filling rounding that blocks water, core, the wrapped waterstop of non-woven fabrics outer layer, successively extrudes pvc sheath layer and high density polyethylene (HDPE) restrictive coating outside waterstop.Middle pressure water repellent electric cable longitudinal water-blocking excellent effect, outer diameter is small, and material consumption is low, and double sheath radial direction waterproof layer structures are simple, manufactures convenience.
Description
Technical field
The utility model relates to press water repellent electric cable in cable technology more particularly to one kind.
Background technique
During power transmission and distribution, midium voltage cable is as basic routing line line, it will usually using in direct-burried or cable duct
The system of laying of laying, in such cases, cable inevitably will appear the case where being exposed to wet environment for a long time or impregnating in water,
As main cable, midium voltage cable is once intake, and hydrone penetrates into insulating layer, can generate water tree, when water tree extends to centainly
Degree will result in insulation breakdown, gently it will cause fixed area power failure, influence normal work production, life, heavy then can occur
Fire causes the person, property to incur loss, and in such cases, design department usually requires that cable itself has when selecting cable
Standby radial water-resisting ability, and then enhance the service life of cable.
Meanwhile if cable socket is intake, hydrone can prolong cable, and portion is propagated axially inwards, and the insulated wire cores with moisture exist
Serious security risk is had in use process, in many cases, cable can be abandoned use, but the usual section of midium voltage cable compared with
Greatly, value is higher, and to avoid such situation from wasting, cable has longitudinal waterproof while having through radial waterproof ability
It is particularly important.
The cable for having both longitudinally and radially water-resisting ability currently on the market is less, and complex process, and outer diameter is larger, is produced into
This is higher, so, manufacture and design a kind of have both in the longitudinally and radially high performance-price ratio of water-proof function and presses water repellent electric cable.
Utility model content
The purpose of this utility model is that proposing to press water repellent electric cable in one kind for above situation, the cable water-blocking conductor
Longitudinal water-blocking excellent effect, outer diameter is small, and material consumption is low, and double sheath radial direction waterproof layer structures are simple, manufactures convenience, is a kind of anti-
Water effect is good, presses water-proof cable in the low high performance-price ratio of production cost.
Water repellent electric cable is pressed in one kind that in order to achieve the above purposes, the technical solution adopted by the utility model is:, includes multi cord
Core, the core include longitudinal water-blocking copper conductor, and the longitudinal water-blocking copper conductor is the molded line conductor that special-shaped monofilament is twisted,
It is provided with the first semiconductor waterstop between each twisted layer, the longitudinal water-blocking copper conductor is coated with semiconductive and blocks water binding strap,
As the water blocking layer between conductor and interior screen；The semiconductive blocks water three-layer co-extruded conductor shield outside binding strap, the poly- second of crosslinking
Alkene insulating layer, insulation screen；It is overlapped outside the insulation screen and is surrounded with the second semiconductor waterstop；Second semiconductive
Waterstop outer layer is overlapped wrapped metal screen layer；
The multiply core is twisted into core, and the core gap uses nothing by the gasket for packing filling rounding that blocks water, core outside
Woven fabric band tightens, and the non-woven fabrics outer layer is overlapped wrapped waterstop, as the longitudinal water-blocking between cable core and sheath
Layer, outside the waterstop, pvc sheath layer and high density polyethylene (HDPE) restrictive coating are successively extruded, the radial water-resisting as cable
Double sheath water blocking layers.Non-woven fabrics outer layer, being overlapped wrapped waterstop effect is only to block water, and is common waterstop, meets meeting after water
Expansion；And above-mentioned semiconductor waterstop is because close to conductor, waterstop in the production process, is blended with the addition of conductive material
Agent, it is therefore an objective to the electric field being homogenized around conductor.
Further, the longitudinal water-blocking copper conductor is anaerobic copper conductor, and the anaerobic copper conductor is greater than for purity
99.98% red copper.
The copper conductor that blocks water is the conductor that special-shaped monofilament is twisted, and the resistance of the first semiconductive is provided between each twisted layer
Water band, conventional 2 class conductor strand techniques, is all made of circular monofilaments, even if still having gap between adjacent monofilament after layering is pressed,
Conductor filled coefficient is low, and degree of pressing is low, and stranded molding conductor resistance is higher, meanwhile, if pressing excessively, easily cause monofilament
Fracture or monofilament jump creek, twisted using the special-shaped monofilament of the utility model, can effectively avoid above situation, and special-shaped monofilament combines single
2 points of shape requirements of silk radical and splicing, directly by monofilament design at cambered molded line monofilament, so that each layer of structure mistake
After mould, be already spliced into the conductor of circular area, be not required to it is excessive complete to be squeezed and deformed by mold, meanwhile, adjacent monofilament is close
Fitting, reduces void area between adjacent monofilament, reduces contact resistance.In process of production, each layer presses mold and adopts
With nanometer-scale mold, conductor diameter is smooth, and roundness is high, and income the most obvious is, about list in meeting national standard GB/T 3956
Under the premise of silk radical and resistance value require, same nominal area conductor has smaller weighing area and outer diameter, such
Situation can effectively reduce the outside diameter of cable, while reduce the technique materials of each layer structure of cable from-inner-to-outer.
The process structure of the water-blocking conductor has abandoned traditional water-blocking conductor by water blocking yarn to fill round silk stranded conductor
The complicated technology in twisted gap, the utility model utilize the molded line monofilament of special designing, tightness between conductor monofilament are promoted,
Meanwhile semiconductive water blocking layer is provided between each twisted layer, conductor outer layer, which is provided with semiconductive and blocks water, binds belt, so that conductor has
Longitudinal water-blocking ability truly.
The semiconductor waterstop is that high strength non-woven fabric and high hydroscopic resin are bonded, and characteristic is water swelling,
Prevent moisture along cable axial migration.
The semiconductive binding strap that blocks water is that polyester textile, high hydroscopic resin, semiconductive adhesive are bonded, characteristic
Tensile strength height is shown as, block-water effect is good.
Further, the conductor shielding layer material is screen material in 35kV semiconductive.
Further, the crosslinked polyetylene insulated layer material is 35kv cross-linked polyethylene insulating material.
Further, the insulation shielding layer material is 35kV semiconductive external screen material.
Further, the metal screen layer is attached most importance to the anaerobic copper belt of lap wound packet.
Further, outside the waterstop, from-inner-to-outer is disposed with separation layer and armor.
Further, the armor material is the double-deck galvanized steel strip.
Further, the separation layer is pvc sheath layer.
The gasket for packing that blocks water contains water uptake expansion resin, the gasket for packing rapid expanding after water suction, so that filled by it
Gap becomes more densely cross-linked, effectively organizes hydrone along cable cabling gap axial migration.
Double restrictive coating internal layers are pvc sheath, and outer layer is high density polyethylene (HDPE) sheath, have both guaranteed the radial resistance of cable
Outlet capacity, while enhancing the safeguard function to internal core, cable abrasive resistance is promoted, cable overall utility is enhanced.
A kind of middle pressure drag water power cable structure of the utility model is simple, reasonable, compact, has compared with prior art following
Advantage:
(1) block-water effect is good, has abandoned the technique that blocks water of traditional complexity, has passed through molded line water-blocking conductor and each water blocking layer of outer layer
The mode combined has been provided with omnibearing stereo stop water longitudinally and radially, from accomplishing for conductor from-inner-to-outer
It successively blocks water, so that cable integrally has stronger radial direction and longitudinal water-blocking ability.
(2) conductor diameter size is small, and structure dosage is few.The conductor being twisted using special-shaped monofilament, is effectively raised
Conductor filled coefficient, reduces contact resistance, wants so that conductor meets in national standard GB/T 3956 about monofilament radical and resistance value
Under the premise of asking, same nominal area conductor has smaller weighing area and outer diameter.
(3) good in economic efficiency.From-inner-to-outer, conductor materials are few compared with the 2 class conductors that conventional circular monofilaments are twisted, and lead
The reduction of external diameter can effectively reduce insulation, sheath or even armor materials, thereby reduce the cost materials of entire cable.
To sum up, for pressure water repellent electric cable under the premise of meeting national standard, water-resisting ability is strong in the utility model one kind, material consumption
It is low, it is the higher water repellent electric cable of a cost performance.
Detailed description of the invention
Fig. 1 is to press water repellent electric cable schematic cross-section (non-armored type) in the utility model one kind.
Fig. 2 is to press water repellent electric cable schematic cross-section (armored type) in the utility model one kind
Specific embodiment
The present invention will be further described with reference to embodiments:
Embodiment 1
Fig. 1 is to press water repellent electric cable schematic cross-section (non-armored type) in the utility model one kind.
Present embodiment discloses water repellent electric cable is pressed in one kind, as shown in Figure 1, the core includes vertical comprising multiply core
To the copper conductor that blocks water, longitudinal water-blocking copper conductor 1 is the molded line conductor that special-shaped monofilament is twisted, and copper wire is greater than for purity
99.98% red copper.
In each twisted layer of longitudinal water-blocking copper conductor 1, it is provided with the first semiconductor waterstop 2, the longitudinal water-blocking copper is led
Outside body 1, it being provided with semiconductive group water binding strap 3, semiconductive blocks water 3 outer layer of binding strap, using catenary suspension type continuous vulcanization peroxide production line,
Three-layer co-extruded conductor shielding 4, crosslinked polyetylene insulated layer 5, insulation screen 6, outside insulation screen 6, successively wrapped the second half
Conductive waterstop 7 and oxygen-free copper stripe 8.
The multiply core is twisted into core, and core stranding gap is filled with the gasket for packing 9 that blocks water, outside core, according to
Secondary wrapped non-woven fabrics belting layer 10 and waterstop 11,11 outer layer of waterstop are provided with 2 layers and extrude type sheath, and 2 layers of sheath are in
And outside it is respectively pvc sheath layer 14, high density polyethylene (HDPE) restrictive coating 15.
Water-blocking conductor described in the present embodiment is twisted by special-shaped molded line monofilament, and each stratotype line monofilament can directly be put together
Circular cross-section, prevented conventional circular monofilaments it is twisted between gap, meanwhile, be provided with semiconductive between each twisted layer of water-blocking conductor
Waterstop, as the water blocking layer between each twisted layer, water-blocking conductor outer layer is provided with semiconductive and blocks water binding strap, is both used as conductor
Water blocking layer between conductor shielding, while interior screen can also be effectively prevent to fall into material, accomplish the longitudinal water-blocking of real meaning, water-blocking conductor
Longitudinal water-blocking excellent effect, outer diameter is small, and material consumption is low, and double sheath radial direction waterproof layer structures are simple, manufactures convenience.
Embodiment 2
Fig. 2 is to press water repellent electric cable schematic cross-section (armored type) in the utility model one kind.
Embodiment 2 is roughly the same with the structure of embodiment 1, and different parts is, embodiment 2 is armored type cable,
In structure, isolation jacket layer 12, armor 13, pvc sheath layer 14 and high-density polyethylene are set gradually outside stranding waterstop 11
Alkene sheath 15, such armored type cable, which is more used in, requires cable to have armour protective layer, can resist the occasion field of certain lateral pressure
Institute.
The utility model is not limited to the above embodiment in documented one kind and presses water repellent electric cable, wherein anaerobic copper conductor knot
The change of structure radical, the change of each thickness degree both are within the protection scope of the present invention.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (6)
1. pressing water repellent electric cable in one kind, it is characterised in that: include multiply core, the core includes longitudinal water-blocking copper conductor, institute
Stating longitudinal water-blocking copper conductor is the molded line conductor that special-shaped monofilament is twisted, and is provided with the first semiconductive between each twisted layer and blocks water
Band；The longitudinal water-blocking copper conductor is coated with semiconductive and blocks water binding strap；The semiconductive blocks water three-layer co-extruded outside binding strap
Conductor shield, crosslinked polyetylene insulated layer, insulation screen；It is overlapped outside the insulation screen and is surrounded with the resistance of the second semiconductive
Water band；The second semiconductor waterstop outer layer, is overlapped wrapped metal screen layer；
The multiply core is twisted into core, and the core gap uses non-woven fabrics by the gasket for packing filling rounding that blocks water, core outside
Band tightens, the non-woven fabrics outer layer, is overlapped wrapped waterstop, outside the waterstop, successively extrude pvc sheath layer and
High density polyethylene (HDPE) restrictive coating；
Outside the waterstop, from-inner-to-outer is disposed with separation layer and armor；The armor material is the double-deck galvanized steel
Band, the separation layer are pvc sheath layer.
2. pressing water repellent electric cable in one kind according to claim 1, which is characterized in that the longitudinal water-blocking copper conductor is oxygen-free copper
Conductor.
3. pressing water repellent electric cable in one kind according to claim 1, which is characterized in that the conductor shielding layer material is 35kV half
Screen material in conductive.
4. pressing water repellent electric cable in one kind according to claim 1, which is characterized in that the crosslinked polyetylene insulated layer material is
35kv cross-linked polyethylene insulating material.
5. pressing water repellent electric cable in one kind according to claim 1, which is characterized in that the insulation shielding layer material is 35kV half
Conductive external screen material.
6. pressing water repellent electric cable in one kind according to claim 1, which is characterized in that the metal screen layer is attached most importance to lap wound packet
Anaerobic copper belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820547154.6U CN208673791U (en) | 2018-04-18 | 2018-04-18 | Water repellent electric cable is pressed in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820547154.6U CN208673791U (en) | 2018-04-18 | 2018-04-18 | Water repellent electric cable is pressed in one kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208673791U true CN208673791U (en) | 2019-03-29 |
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ID=65823111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820547154.6U Active CN208673791U (en) | 2018-04-18 | 2018-04-18 | Water repellent electric cable is pressed in one kind |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113380443A (en) * | 2021-06-16 | 2021-09-10 | 中天科技海缆股份有限公司 | Ultrahigh-voltage submarine cable, production method of ultrahigh-voltage submarine cable and cabling device |
| CN117038189A (en) * | 2023-07-12 | 2023-11-10 | 河源坚宝电缆有限公司 | Water-blocking type medium-high voltage power cable |
-
2018
- 2018-04-18 CN CN201820547154.6U patent/CN208673791U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113380443A (en) * | 2021-06-16 | 2021-09-10 | 中天科技海缆股份有限公司 | Ultrahigh-voltage submarine cable, production method of ultrahigh-voltage submarine cable and cabling device |
| CN113380443B (en) * | 2021-06-16 | 2023-01-24 | 中天科技海缆股份有限公司 | Ultrahigh-voltage submarine cable, production method of ultrahigh-voltage submarine cable and cabling device |
| CN117038189A (en) * | 2023-07-12 | 2023-11-10 | 河源坚宝电缆有限公司 | Water-blocking type medium-high voltage power cable |
| CN117038189B (en) * | 2023-07-12 | 2024-04-26 | 河源坚宝电缆有限公司 | Water-blocking type medium-high voltage power cable |
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