CN102592732B - Water resistant high-voltage cable and production method thereof - Google Patents
Water resistant high-voltage cable and production method thereof Download PDFInfo
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- CN102592732B CN102592732B CN2012100794651A CN201210079465A CN102592732B CN 102592732 B CN102592732 B CN 102592732B CN 2012100794651 A CN2012100794651 A CN 2012100794651A CN 201210079465 A CN201210079465 A CN 201210079465A CN 102592732 B CN102592732 B CN 102592732B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a water resistant high-voltage cable and a production method thereof. The cable comprises a cable core and a cable core sleeve wrapped on the cable core. The cable core comprises a plurality of conductors. Fragile water resistant belts are wound on the conductors. Each fragile water resistant belt comprises semi-conducting fragile non-woven fabric and water resistant powder. The water resistant powder is wrapped in the semi-conducting fragile non-woven fabric. When the cable core is stressed, the semi-conducting fragile non-woven fabric is smashed, the water resistant powder fills gaps among the conductors. The production method of the water resistant high-voltage cable includes the steps of producing the cable core and the cable core sleeve. When the cable core is produced, the fragile water resistant belts are wound on the conductors, each fragile water resistant belt comprises the semi-conducting fragile non-woven fabric and the water resistant powder, and the water resistant powder is wrapped in the semi-conducting fragile non-woven fabric. The cable core of the water resistant high-voltage cable adopts the fragile water resistant belts, and the water resistant powder is wrapped in the semi-conducting fragile non-woven fabric and can be filled in the gaps among the conductors of the cable core so that the water resistant high-voltage cable achieves good powder adhesion effect and has optimal water resistant effect.
Description
Technical field
The present invention relates to the cable technology field, be specifically related to a kind of Water resistant high-voltage cable and preparation method thereof.
Background technology
At present, the mesolow field of cables, the mode of blocking water of existing cable structure has two kinds: a kind of is that static state blocks water, and a kind of is dynamically to block water.It is generally to fill some to refuse hydrate with the immersion of the passive form prevention of static state moisture content that static state blocks water, in process of production, because the control of technique is unstable and the impact of the factor such as the variation of environment for use (expanding with heat and contract with cold) makes between water blocking layer and outer jacket or core to produce some little air gaps, block-water effect is undesirable, and the cable cost of manufacture is high, weight large, complex procedures.Dynamically the stop water material therefor is to contain to meet the water even macromolecular compound of decades of times of own vol several times that can expand rapidly.This macromolecular compound is filled between the gaps such as conductor, core, core cover with forms such as water-proofing powder, water blocking yarn, common waterstop, waterproofing rope; form a set of complete system that blocks water; the volume of itself is increased rapidly; filling institute has living space; as clog water pipe with stopper; water is blocked, prevent that moisture from continuing infiltration, reaches the purpose of protection cable.In dynamic stop water, with regard to the conductor part of core, when whole employing water-proofing powder, because conductor core wire is large with strand and layer space, attached powder difficulty, if by the attached powder of medium, easily cause core insulation distortion; When whole employing water blocking yarn, conductor diameter is increased and be prone to the phenomenons such as hand pick, conductive surface are not bright and clean; When the common waterstop of whole employings, conductor diameter increases, and the phenomenons such as electrical property is unstable occur.
High pressure, extra-high-tension cable field, due to the particularity of product, the existing insulated wire cores outside adopts the structure of semi-conductive buffer water blocking layer longitudinal water-blocking, metallic sheath longitudinal water-blocking.Can avoid like this insulation screen to affect the insulation property of cable and useful life because touching water or making moist.Once but the damage of insulation shield layer, or the joint fault, water will infiltrate conductor inside, and a whole like this cable just can't be used, and because the unit price of high pressure, extra-high-tension cable is higher, each loss is all even up to a million at hundreds of thousands.
Disclose a kind of core part in the Chinese utility model patent file that is CN2554774Y at publication number and adopted water-proofing powder, the technology that dynamically blocks water that water blocking yarn is mixed, can solve conductor diameter increase and hand pick that core part only produces with water blocking yarn, the problem that conductive surface is not bright and clean, but this water blocking yarn technology mixed with water-proofing powder still can not make water-proofing powder good be attached to conductive surface, and in manufacturing process, need water-proofing powder is attached on water blocking yarn or by water-proofing powder and is attached on conductor, but because the adhesiveness of water-proofing powder itself is not high, the unavoidable water-proofing powder that causes in the process of attached powder is unrestrained, may bring the water-proofing powder waste, and increased manufacture difficulty, and in the situation that the attached powder amount of water blocking yarn is limited, its block-water effect reached is also limited.
Summary of the invention
The invention provides a kind of Water resistant high-voltage cable, can solve the problem that the attached powder of water-proofing powder is limited and block-water effect is limited that existing water repellent electric cable adopts water blocking yarn technology mixed with water-proofing powder to bring.
The invention provides a kind of Water resistant high-voltage cable, the core cover that comprises core and parcel core, described core comprises many conductors, be wound around frangible waterstop on conductor, described frangible waterstop comprises the frangible nonwoven fabrics of semiconductive and water-proofing powder, and parcel water-proofing powder in the frangible nonwoven fabrics of semiconductive, when core is under pressure, the frangible nonwoven fabrics fragmentation of semiconductive, the gap between water-proofing powder filling conductor.
Preferably, many conductors of described core form respectively inner core, inferior inner core, inferior outer core and outer core from inside to outside, and inner core, inferior inner core, inferior outer core and outer core wrap up by frangible waterstop.
Preferably, described core cover comprises the first semiconductive waterstop, conductor shield, insulating barrier, insulation screen, the second semiconductive waterstop, metallic sheath and oversheath from inside to outside.
Preferably, the skin at oversheath also comprises semi-conductive layer.
Preferably, described core is divided into a plurality of secter pats, comprises many conductors in each secter pat.
Preferably, the two-sided insulation crimped paper that blocks water of liner between every two secter pats.
Preferably, secter pat forms centre bore at the core center, and central hole location adds many water blocking yarns.
The core of Water resistant high-voltage cable provided by the invention adopts frangible waterstop, frangible waterstop is by the frangible nonwoven fabrics parcel of semiconductive water-proofing powder, core is when being under pressure, the frangible nonwoven fabrics fragmentation of semiconductive, water-proofing powder is filled in the conductor gap of core, realize good attached powder effect, there is best block-water effect.
In addition, the present invention also provides a kind of manufacture method of Water resistant high-voltage cable, can solve in prior art in the core manufacturing process of water repellent electric cable attached powder not good, causes the water-proofing powder waste, the problem that make efficiency is not high.
The manufacture method of a kind of Water resistant high-voltage cable provided by the invention, comprise and make core and make the core cover, to be wound around frangible waterstop on conductor while making core, described frangible waterstop comprises the frangible nonwoven fabrics of semiconductive and water-proofing powder, parcel water-proofing powder in the frangible nonwoven fabrics of semiconductive.
Preferably, the described step by the frangible waterstop of winding on conductor comprises:
By many conductors from inside to outside close-packed arrays form and to there is concentrically ringed conductor layer, be wound around frangible waterstop on every one deck conductor.
As another kind of optimal way, the described step by the frangible waterstop of winding on conductor comprises:
Many conductor close-packed arrays are made into to inner core, are wound around frangible waterstop on inner core;
Make time inner core with many conductor close-packed arrays on the inner core that has been wound around frangible waterstop, be wound around frangible waterstop on inferior inner core;
Make time outer core with many conductor close-packed arrays on being wound around the inferior inner core of frangible waterstop, the frangible waterstop of winding on inferior outer core;
Make outer core with many conductor close-packed arrays on being wound around time outer core of frangible waterstop, outside the frangible waterstop of winding on core.
Because adopting on conductor in the manufacturing process of core, the manufacture method of Water resistant high-voltage cable provided by the present invention is wound around frangible waterstop, frangible waterstop is by the frangible nonwoven fabrics parcel of semiconductive water-proofing powder, the mode that has replaced direct attached powder in existing manufacture method, improved the efficiency of attached powder in manufacturing process, and whole manufacturing process is easy to realize more.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the axial cross section schematic diagram of the core of the Water resistant high-voltage cable that is not under pressure in the embodiment of the present invention 1;
Fig. 2 is the structural representation of Water resistant high-voltage cable in the embodiment of the present invention 1;
Fig. 3 is the structural representation of the core of another Water resistant high-voltage cable in the embodiment of the present invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under the creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
The embodiment of the present invention provides a kind of Water resistant high-voltage cable, the core cover that comprises core and parcel core, described core comprises many conductors, be wound around frangible waterstop on conductor, described frangible waterstop comprises the frangible nonwoven fabrics of semiconductive and water-proofing powder, and parcel water-proofing powder in the frangible nonwoven fabrics of semiconductive, when core is under pressure, the frangible nonwoven fabrics fragmentation of semiconductive, the gap between water-proofing powder filling conductor.
Specifically as shown in Figure 1, described core consists of many conductors 10, and conductor 10 forms respectively inner core 11 from inside to outside, inferior inner core 12, inferior outer core 13 and outer core 14; Inner core 11, inferior inner core 12, at first inferior outer core 13 and outer core 14, by frangible waterstop 20 parcels, can be wound around the frangible waterstop of inner core 11 use, then be formed time inner core 12 with conductor in the manufacturing process of core, then continue to be wound around time inner core 12 with frangible waterstop, form time outer core 13 with conductor again, continue to be wound around time outer core 13 with frangible waterstop, finally with conductor, form outer core, finally with frangible waterstop, be wrapped on outer core, so far formed the core that has wrapped up frangible waterstop.Tend to form a center conductor 101 at inner core 11De center, in order to guarantee the inner gapless of inner core 11, therefore on center conductor 101, still can be wound around the frangible waterstop 201 in center.
Outside at the core that wraps frangible waterstop also has the core cover, specifically as shown in Figure 2, core 1 is by core 2 parcels, core cover 2 comprises the first semiconductive waterstop 21 from inside to outside, conductor shield 22, insulating barrier 23, insulation screen 24, the second semiconductive waterstop 25, metallic sheath 26 and oversheath 27; As a kind of improved procedure of the embodiment of the present invention, at the skin of oversheath 27, also comprise semi-conductive layer 28.
When online 2 pairs of cores 1 of core retainer plate are wrapped up, core 1 is under pressure, outer core, inferior outer core, inferior inner core, inner core all can shrink to the center of circle direction of core, therefore frangible waterstop can be subject to (outer core and time outer core between two sandwich layers equally, inferior outer core and time inner core, inferior inner core and inner core, outer core overlaps innermost layer with core) extruding, so frangible nonwoven fabrics 201 fragmentations of the semiconductive of frangible waterstop, the gap that water-proofing powder 202 filling conductor is 10.The equal close-packed arrays of conductor due to outer core, inferior outer core, inferior inner core and inner core, therefore, water-proofing powder can be stepped up can not leak outside between two sandwich layers, and also can adhere to water-proofing powder 202 on the broken frangible nonwoven fabrics 201 of semiconductive, guarantee the attached powder amount of the water-proofing powder in core, for block-water effect, can realize the best.
Embodiment 2:
As shown in Figure 3, described core 1 is divided into a plurality of secter pats 31, belongs to a kind of multicore cable, in each secter pat 31, comprises many conductors 10.The two-sided insulation crimped paper 32 that blocks water of liner between every two secter pats.Secter pat 31 is formed centrally centre bore in core 1, and central hole location adds many water blocking yarns 33.Still adopt the mode in above-described embodiment 1 for the conductor 10 in secter pat 31, the frangible waterstop of conductor 10 use is wound around, be understandable that, in the embodiment of the present invention, the arrangement of conductor does not need layering, therefore, frangible waterstop has multiple to the canoe of conductor, can only be wound around a conductor with a frangible waterstop and be wrapped up, and also can be wound around many conductors with a frangible waterstop and be wrapped up.
Core in the embodiment of the present invention still adopts the core cover in above-described embodiment 1 to be wrapped up outward, and concrete core nested structure can, referring to the detailed introduction of in above-described embodiment 1, the core cover being made, repeat no more herein.
Embodiment 3:
The embodiment of the present invention provides a kind of manufacture method of Water resistant high-voltage cable, comprise and make core and make the core cover, to be wound around frangible waterstop on conductor while making core, described frangible waterstop comprises the frangible nonwoven fabrics of semiconductive and water-proofing powder, parcel water-proofing powder in the frangible nonwoven fabrics of semiconductive.
Particularly, while being wound around frangible waterstop on conductor, first-selected will many conductors from inside to outside close-packed arrays form and there is concentrically ringed conductor layer, the frangible waterstop of winding on every one deck conductor.
As a kind of improved procedure of the embodiment of the present invention, many conductor close-packed arrays can also be made into to inner core, the frangible waterstop of winding on inner core when being wound around frangible waterstop on conductor; Make time inner core with many conductor close-packed arrays on the inner core that has been wound around frangible waterstop, be wound around frangible waterstop on inferior inner core; Make time outer core with many conductor close-packed arrays on being wound around the inferior inner core of frangible waterstop, the frangible waterstop of winding on inferior outer core; Make outer core with many conductor close-packed arrays on being wound around time outer core of frangible waterstop, outside the frangible waterstop of winding on core.
It should be noted that, due to structure embodiment of the present invention and the inventive method embodiment, based on same design, particular content can, referring to the narration in structure embodiment of the present invention, repeat no more herein.
Above a kind of Water resistant high-voltage cable that the embodiment of the present invention is provided and preparation method thereof is described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention simultaneously.
Claims (10)
1. a Water resistant high-voltage cable, the core cover that comprises core and parcel core, it is characterized in that: described core comprises many conductors, be wound around frangible waterstop on conductor, described frangible waterstop comprises the frangible nonwoven fabrics of semiconductive and water-proofing powder, and parcel water-proofing powder in the frangible nonwoven fabrics of semiconductive, when core is under pressure, the frangible nonwoven fabrics fragmentation of semiconductive, the gap between water-proofing powder filling conductor.
2. a kind of Water resistant high-voltage cable as claimed in claim 1, it is characterized in that: many conductors of described core form respectively inner core, inferior inner core, inferior outer core and outer core from inside to outside, and inner core, inferior inner core, inferior outer core and outer core wrap up by frangible waterstop.
3. a kind of Water resistant high-voltage cable as claimed in claim 1 or 2 is characterized in that: described core cover comprises the first semiconductive waterstop, conductor shield, insulating barrier, insulation screen, the second semiconductive waterstop, metallic sheath and oversheath from inside to outside.
4. a kind of Water resistant high-voltage cable as claimed in claim 3, it is characterized in that: the skin at oversheath also comprises semi-conductive layer.
5. a kind of Water resistant high-voltage cable as claimed in claim 1, it is characterized in that: described core is divided into a plurality of secter pats, comprises many conductors in each secter pat.
6. a kind of Water resistant high-voltage cable as claimed in claim 5, is characterized in that: the two-sided insulation crimped paper that blocks water of liner between every two secter pats.
7. a kind of Water resistant high-voltage cable as described as claim 5 or 6 is characterized in that: secter pat forms centre bore at the core center, central hole location adds many water blocking yarns.
8. the manufacture method of a Water resistant high-voltage cable, comprise and make core and make the core cover, it is characterized in that: will be wound around frangible waterstop on conductor while making core, described frangible waterstop comprises the frangible nonwoven fabrics of semiconductive and water-proofing powder, parcel water-proofing powder in the frangible nonwoven fabrics of semiconductive; When core is under pressure, the frangible nonwoven fabrics fragmentation of semiconductive, the gap between water-proofing powder filling conductor.
9. the manufacture method of a kind of Water resistant high-voltage cable as claimed in claim 8, is characterized in that, the described step by the frangible waterstop of winding on conductor comprises:
By many conductors from inside to outside close-packed arrays form and to there is concentrically ringed conductor layer, be wound around frangible waterstop on every one deck conductor.
10. the manufacture method of a kind of Water resistant high-voltage cable as claimed in claim 8, is characterized in that, the described step by the frangible waterstop of winding on conductor comprises:
Many conductor close-packed arrays are made into to inner core, are wound around frangible waterstop on inner core;
Make time inner core with many conductor close-packed arrays on the inner core that has been wound around frangible waterstop, be wound around frangible waterstop on inferior inner core;
Make time outer core with many conductor close-packed arrays on being wound around the inferior inner core of frangible waterstop, the frangible waterstop of winding on inferior outer core;
Make outer core with many conductor close-packed arrays on being wound around time outer core of frangible waterstop, outside the frangible waterstop of winding on core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100794651A CN102592732B (en) | 2012-03-22 | 2012-03-22 | Water resistant high-voltage cable and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100794651A CN102592732B (en) | 2012-03-22 | 2012-03-22 | Water resistant high-voltage cable and production method thereof |
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| CN102592732A CN102592732A (en) | 2012-07-18 |
| CN102592732B true CN102592732B (en) | 2013-12-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104505159A (en) * | 2014-11-27 | 2015-04-08 | 江苏中煤电缆有限公司 | Watertight conductor |
| CN105810302B (en) * | 2016-05-20 | 2018-05-15 | 江苏亨通高压海缆有限公司 | Submarine cable special-shaped conductor adopting non-regular stranding |
| CN106057329A (en) * | 2016-08-08 | 2016-10-26 | 中天科技海缆有限公司 | Trapezoidal single wire water-blocking conductor for +/-500kV flexible DC cable and submarine cable |
| CN106531337A (en) * | 2016-12-30 | 2017-03-22 | 无锡江南电缆有限公司 | Segmental conductor with central built-in optical fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10172358A (en) * | 1996-12-09 | 1998-06-26 | Fukuoka Cloth Kogyo Kk | Water cut-off tape for power cable, and rubber plastic insulating power cable using the same |
| CN100392461C (en) * | 2003-10-16 | 2008-06-04 | 上海电缆研究所 | Expansion water blocking tape for optical cable |
| CN201063261Y (en) * | 2007-06-30 | 2008-05-21 | 蒋陆肆 | High-resistance aquosity cable conductor |
| CN202134226U (en) * | 2011-07-06 | 2012-02-01 | 浙江晨光电缆股份有限公司 | High voltage cable large cross section split conductor |
| CN202487251U (en) * | 2012-03-22 | 2012-10-10 | 广州岭南电缆股份有限公司 | Waterproof high-voltage cable |
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