CN204332475U - A kind of multicore water repellent electric cable with wire core - Google Patents
A kind of multicore water repellent electric cable with wire core Download PDFInfo
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- CN204332475U CN204332475U CN201420718212.9U CN201420718212U CN204332475U CN 204332475 U CN204332475 U CN 204332475U CN 201420718212 U CN201420718212 U CN 201420718212U CN 204332475 U CN204332475 U CN 204332475U
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Abstract
The utility model discloses a kind of multicore water repellent electric cable with wire core, comprise and tighten layer (1) and cable core (2).Described layer (1) of tightening wraps in cable core (2) outward; Described cable core (2) comprises core (22) and several wire core (21) circularly, and core (22) is positioned at cable core (2) center circularly; Core (21) is by round conductor (211) and be extruded in round conductor (211) extruded insulation layer (212) outward and form.The multicore water repellent electric cable of band wire core of the present utility model, power wire core is corrugated structure, and compact conformation between wire core, does not need to use the water uptake expansion materials such as waterstop, waterproofing rope, water blocking yarn, water-proofing powder between core, reduce production cost, block-water performance is reliable.Conductor adopts circle to press structure, and technology difficulty is little and can not Damage to insulation layer.
Description
Technical field
The utility model belongs to technical field of electric wires and cables, particularly a kind of multicore water repellent electric cable with wire core.
Background technology
The intrusion of moisture often power cable suffer to destroy, useful life affected main cause.Moisture immerses approach and mainly invades cable from the sheath of cable and the end of cable, causes the oxidation of conductor, corrosion, thus affects the electrical property of cable, even abnormal broken line accident occurs; Moisture infiltrates insulating barrier, and under the effect of highfield, insulating barrier can produce " water tree ", accelerates the voltage ageing of cable, causes cable breakdown accident, reduces cable useful life.In order to prevent the intrusion of moisture, require between each structure of cable closely very close to each other.
Prior art, in order to prevent the intrusion of moisture, multicore cable is generally many circular cores twisted synthesizing cable together with waterproofing rope or water blocking yarn, wrapped waterstop between primary structure, adopt the method for the water uptake expansion materials such as waterstop, waterproofing rope, water blocking yarn, water-proofing powder of arranging between each structure of cable, a large amount of hydrophilic radical that material water-proof material contains, will imbibition with water short-time contact, can absorb and conduct oneself with dignity into hundred times even water of thousandfold, there is fabulous water-retaining property.This method one is that the use of a large amount of material water-proof material can increase production cost, and two is the modes by water conservation, is absorbing the part of moisture, and moisture still can damage conductor or infiltrate insulating barrier.In order to improve the block-water performance of cable, also usually use corrugated conductor in prior art, extruded insulation forms stranding after corrugated core, and gap between core can be made to drop to minimum, but and gap between sheath still exist.Especially there is an a lot of difficult problem and drawback in process of production in the processing of corrugated conductor: one is that technology difficulty is large, in order to meet the enough flexibilities of corrugated conductor and stability, all higher to the characteristic requirements of the design of conductor structure, moulds of industrial equipment, equipment; Two is want conductor to adopt compact conductor for preventing moisture from infiltrating, and to improve the activity coefficient of wire, reduced outside diameter, reduces gap between conductor, and corrugated conductor to be corrugated press, the shape of every layer is different, the difficulty increase of pressing; Three is easily cause electric field to concentrate in each angle course of processing of corrugated conductor and damage cable insulation.
Utility model content
The utility model is overcome the shortcoming that prior art exists, and provides a kind of compact conformation, cost is low, technology difficulty is low, the multicore water repellent electric cable of band wire core that block-water performance is good.
A kind of multicore water repellent electric cable with wire core of the present utility model comprises tightens layer and cable core.Described layer of tightening wraps in outside cable core; Described cable core comprises core and several wire core circularly, and core is positioned at cable core center circularly; Core is made up of round conductor and the extruded insulation layer be extruded in outside round conductor.
As the further improvement of technique scheme, described core is circularly be extruded with circular insulating layer outside bare conductor structure or bare conductor.
Another kind as technique scheme improves, and described round conductor is round compacted comductor or presses circular molded line conductor.
Another kind as technique scheme improves, and described extruded insulation layer is circular or corrugated sheath.
Another kind as technique scheme improves, the circular insulating layer outside described round conductor and arrange one deck or multilayer sheath between extruded insulation layer, and described sheath is armour and/or screen.
Another kind as technique scheme improves, described in tighten layer and be wrapped, vertical bag, weave or extrude.
Another kind as technique scheme improves, described in tighten layer for braiding, braid is coated with pitch.
Another kind as technique scheme improves, and is provided with protective layer between each core described.
The multicore water repellent electric cable of band wire core of the present utility model, power wire core is corrugated structure, and compact conformation between wire core, does not need to use the water uptake expansion materials such as waterstop, waterproofing rope, water blocking yarn, water-proofing powder between core, reduce production cost, block-water performance is reliable.Conductor adopts circle to press structure, and technology difficulty is little and can not Damage to insulation layer.
Accompanying drawing explanation
Fig. 1 is the multicore water repellent electric cable structural representation of the band wire core of embodiment one;
Fig. 2 is the multicore water repellent electric cable structural representation of the band wire core of embodiment two;
Fig. 3 is the multicore water repellent electric cable structural representation of the band wire core of embodiment three.
Embodiment
Below in conjunction with accompanying drawing, a kind of multicore water repellent electric cable with wire core that the utility model proposes is described in detail.
Embodiment one
As shown in Figure 1, a kind of multicore water repellent electric cable with wire core of the present embodiment, comprises and tightens layer 1 and cable core 2.Described layer 1 of tightening wraps in outside cable core 2; Described cable core 2 comprises core 22 and 3 cores 21 circularly, and core 22 is positioned at cable core 2 center circularly, and core 22 is bare conductor structure circularly.Core 21 is made up of round conductor 211 and the extruded insulation layer 212 be extruded in outside round conductor 211.
Described round conductor 211 is for round compacted comductor or press circular molded line conductor.Preferably press circular molded line conductor.
Described extruded insulation layer 212 is circular or corrugated sheath.Circular.Can be squash type or crowded tubular type, preferred squash type.
Described layer 1 of tightening is wrapped, vertical bag, weaves or extrude.Tighten layer 1 and be preferably braid, braid is coated with pitch.
Protective layer is provided with between each core 21 described.
Embodiment two
As shown in Figure 2, a kind of multicore water repellent electric cable with wire core of the present embodiment, comprises and tightens layer and cable core.Described layer of tightening wraps in outside cable core; Described cable core comprises core and 4 cores circularly, and core is positioned at cable core center circularly, and core is made up of the circular insulating layer extruded outside bare conductor and bare conductor circularly.Core is made up of round conductor and the extruded insulation layer be extruded in outside round conductor.
Described round conductor is round compacted comductor or presses circular molded line conductor.Preferably press circular molded line conductor.
Described extruded insulation layer is circular or corrugated sheath.Circular.Can be squash type or crowded tubular type, preferred squash type.
Circular insulating layer outside described round conductor and arrange multilayer sheath between extruded insulation layer, described sheath is armour and/or screen.
Described layer of tightening is wrapped, vertical bag, weaves or extrude.Tighten layer and be preferably braid, braid is coated with pitch.
Embodiment three
As shown in Figure 3, a kind of multicore water repellent electric cable with wire core of the present embodiment, comprises and tightens layer and cable core.Described layer of tightening wraps in outside cable core; Described cable core comprises core and 5 cores circularly, and core is positioned at cable core center circularly, and core is made up of the circular insulating layer extruded outside bare conductor and bare conductor circularly.Core is made up of round conductor and the extruded insulation layer be extruded in outside round conductor.
Described round conductor is round compacted comductor or presses circular molded line conductor.Preferably press circular molded line conductor.
Described extruded insulation layer is circular or corrugated sheath.Circular.Can be squash type or crowded tubular type, preferred squash type.
Circular insulating layer outside described round conductor and arrange one deck or multilayer sheath between extruded insulation layer, described sheath is armour and/or screen.
Described layer of tightening is wrapped, vertical bag, weaves or extrude.Tighten layer and be preferably braid, braid is coated with pitch.
Claims (8)
1. the multicore water repellent electric cable with wire core, comprises and tightens layer (1) and cable core (2), it is characterized in that: described in tighten layer (1) and wrap in cable core (2) outward; Described cable core (2) comprises core (22) and several wire core (21) circularly, and core (22) is positioned at cable core (2) center circularly; Core (21) is by round conductor (211) and be extruded in round conductor (211) extruded insulation layer (212) outward and form.
2. the multicore water repellent electric cable of band wire core according to claim 1, is characterised in that: described core circularly (22) is for being extruded with circular insulating layer outside bare conductor structure or bare conductor.
3. the multicore water repellent electric cable of band wire core according to claim 1, is characterised in that: described round conductor (211) is for round compacted comductor or press circular molded line conductor.
4. the multicore water repellent electric cable of band wire core according to claim 1, is characterised in that: described extruded insulation layer (212) is circular or corrugated sheath.
5. the multicore water repellent electric cable of band wire core according to claim 2, be characterised in that: arrange one deck or multilayer sheath between the outer circular insulating layer of described round conductor (211) and extruded insulation layer (212), described sheath is armour and/or screen.
6. the multicore water repellent electric cable of band wire core according to claim 1, is characterised in that: described in tighten layer (1) and be wrapped, vertical bag, weave or extrude.
7. the multicore water repellent electric cable of band wire core according to claim 6, is characterised in that: described in tighten layer (1) for braiding, braid is coated with pitch.
8. the multicore water repellent electric cable of band wire core according to claim 1, is characterised in that: be provided with protective layer between described each core (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420718212.9U CN204332475U (en) | 2014-11-26 | 2014-11-26 | A kind of multicore water repellent electric cable with wire core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420718212.9U CN204332475U (en) | 2014-11-26 | 2014-11-26 | A kind of multicore water repellent electric cable with wire core |
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| CN204332475U true CN204332475U (en) | 2015-05-13 |
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| CN201420718212.9U Active CN204332475U (en) | 2014-11-26 | 2014-11-26 | A kind of multicore water repellent electric cable with wire core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332230A (en) * | 2014-11-26 | 2015-02-04 | 无锡江南电缆有限公司 | Multi-core waterproof cable |
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2014
- 2014-11-26 CN CN201420718212.9U patent/CN204332475U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332230A (en) * | 2014-11-26 | 2015-02-04 | 无锡江南电缆有限公司 | Multi-core waterproof cable |
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