CN211879091U - Waterproof and moistureproof insulated cable - Google Patents
Waterproof and moistureproof insulated cable Download PDFInfo
- Publication number
- CN211879091U CN211879091U CN202020375507.6U CN202020375507U CN211879091U CN 211879091 U CN211879091 U CN 211879091U CN 202020375507 U CN202020375507 U CN 202020375507U CN 211879091 U CN211879091 U CN 211879091U
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- CN
- China
- Prior art keywords
- layer
- fluororubber
- moisture
- copper
- proof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 48
- 239000004020 conductor Substances 0.000 claims abstract description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- 239000004743 Polypropylene Substances 0.000 claims abstract description 22
- -1 polypropylene Polymers 0.000 claims abstract description 22
- 229920001155 polypropylene Polymers 0.000 claims abstract description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 9
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000077 silane Inorganic materials 0.000 claims abstract description 7
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 5
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000005253 cladding Methods 0.000 claims abstract 2
- 230000004888 barrier function Effects 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 8
- 239000011889 copper foil Substances 0.000 claims description 7
- 229920002799 BoPET Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims 1
- 240000005572 Syzygium cordatum Species 0.000 abstract description 5
- 235000006650 Syzygium cordatum Nutrition 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 5
- 230000001934 delay Effects 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- Laminated Bodies (AREA)
- Insulated Conductors (AREA)
Abstract
The utility model discloses a waterproof moisture-proof type insulated cable, including the inner conductor, the outside cladding in proper order of inner conductor has dampproof course in the fluororubber, interior semiconduction shielding layer, silane grafting crosslinked low density polyethylene insulating layer, outer semiconduction shielding layer, the outer dampproof course of fluororubber, polypropylene hygroscopic layer, copper mould compound area around covering, shielding mesh conductor layer, PTFE around band layer and oversheath, the inner conductor with it has the polypropylene to inhale the core to fill between the dampproof course in the fluororubber, the dampproof course in the fluororubber with the outer dampproof course of fluororubber is 0.5mm to 3mm in thickness, the dampproof course in the fluororubber with the outer dampproof course of fluororubber is two-layer fluororubber layer upon layer structure as an organic whole at least. The cable has excellent waterproof and moistureproof performance, delays the aging phenomenon of water trees, has excellent insulating performance, stable electrical shielding performance and better laying environment adaptability.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a waterproof moisture-proof type insulated cable.
Background
A large number of cables are applied in power construction, the cable has good insulating property, the power supply reliability can be improved, the appearance of the city is beautified, and the popularization and application values are higher. In the cable construction process, the phenomenon that the cable is affected with damp and enters water sometimes happens, and the potential hidden danger influencing the safe operation of the cable is formed. When the cable is laid, the cable often passes through roads, bridges and the like, and due to reasons such as weather and the like, moisture can not permeate into the cable, the water tree aging phenomenon can occur under the action of an electric field, the cable insulation is damaged, and finally the cable breakdown accident is caused. If the thickness of the cable insulating layer is only increased, the aging phenomenon of the water tree is delayed, and the temporary solution and the permanent solution are not treated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a waterproof moisture-proof type insulated cable, has excellent dampproofing and waterproofing performance, delays the ageing phenomenon of water tree, and insulating properties is excellent, and electrical shielding performance is stable, lays environmental suitability better.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
A waterproof and moisture-proof insulated cable comprises an inner conductor, wherein the outer part of the inner conductor is sequentially coated with a fluororubber inner moisture-proof layer, an inner semiconductive shielding layer, a silane grafted crosslinked low-density polyethylene insulating layer, an outer semiconductive shielding layer, a fluororubber outer moisture-proof layer, a polypropylene moisture absorption layer, a copper-plastic composite tape wrapping layer, a shielding mesh conductor layer, a PTFE wrapping layer and an outer sheath, a polypropylene moisture absorption core material is filled between the inner conductor and the fluororubber inner moisture-proof layer, the fluororubber inner moisture-proof layer and the fluororubber outer moisture-proof layer are 0.5mm to 3mm in thickness, and the fluororubber inner moisture-proof layer and the fluororubber outer moisture-proof layer are laminated into an integral structure by at least two layers of fluoror.
Preferably, the inner conductor is formed by concentrically twisting a plurality of copper stranded wires, each copper stranded wire is formed by bundling a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.05mm to 0.08 mm.
Preferably, the lay length of the inner conductor is 10 to 20 times the outer diameter of the inner conductor.
Preferably, the thickness of the fluororubber inner moisture barrier and the fluororubber outer moisture barrier is 1mm to 2 mm.
Preferably, the inner semiconductive shield layer and the outer semiconductive shield layer are both EVA resin layers.
Preferably, the polypropylene moisture absorption layer is formed by lapping and wrapping a polypropylene winding belt on the fluororubber outer moisture-proof layer in a unidirectional spiral manner.
Preferably, the copper-plastic composite tape wrapping layer is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer.
Preferably, the shielding mesh conductor layer is formed by spirally winding and weaving polyester fiber copper foil filaments and tin-plated copper monofilaments in opposite directions.
Preferably, the PTFE wrapping tape layer is a gap wrapping structure.
Preferably, the outer sheath is a silane grafted cross-linked high density polyethylene outer sheath.
The utility model has the advantages that:
1. when the temperature of the cable rises, moisture from the polypropylene moisture absorption core material and the polypropylene moisture absorption layer is effectively blocked by the inner fluororubber moisture-proof layer and the outer fluororubber moisture-proof layer, so that the moisture is inhibited from diffusing to the insulating layer, the water tree aging phenomenon of the insulating layer is greatly delayed, the cable has excellent electrical insulation property, better voltage resistance, longer cable life and durable use.
2. Moisture barrier and fluororubber outer moisture barrier are multilayer fluororubber layer lamination crowded package structure in the fluororubber, can effectively avoid the individual layer crowded package easily to cause the uneven phenomenon of thickness, have excellent dampproofing water blocking performance.
3. The polypropylene moisture absorption layer is formed by overlapping the polypropylene winding belt in a one-way spiral mode on the fluororubber outer moisture-proof layer, the polypropylene winding belt can be made of iron resin composite materials, the polypropylene moisture absorption layer has conductivity, the potential difference between the fluororubber outer moisture-proof layer and the copper plastic composite belt can be reduced, and the occurrence of uneven electric field intensity and partial discharge is reduced.
4. Copper is moulded composite band around the covering, shielding mesh conductor layer can effectual suppression inside signal or noise leak to the outside and restrain the interference that comes from the external signal, copper is moulded composite band and is included copper foil strip skin and PET film inlayer, make this shielding layer be difficult for appearing the phenomenon of rupture, shielding mesh conductor layer can mould composite band good contact with copper, guarantee effectual shielding performance, adopt PTFE around the band layer, the coefficient of friction is little, it moulds composite band around the covering to reduce copper, shielding mesh conductor layer stress concentration, improve the stability of reinforcing shielding characteristic, guarantee effectual shielding performance, durable use.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: the composite cable comprises, by weight, 1-an inner conductor, 2-a fluororubber inner moisture-proof layer, 3-an inner semiconductive shielding layer, 4-a silane grafted crosslinked low-density polyethylene insulating layer, 5-an outer semiconductive shielding layer, 6-a fluororubber outer moisture-proof layer, 7-a polypropylene moisture absorption layer, 8-a copper-plastic composite tape wrapping layer, 9-a shielding mesh conductor layer, 10-a PTFE wrapping tape layer, 11-an outer sheath and 12-a polypropylene moisture absorption core material.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a waterproof moisture-proof type insulated cable, including inner conductor 1, specific theory, inner conductor 1 is a plurality of copper strands concentric compound twists and constitutes, the copper strand comprises a plurality of tinned copper monofilament bunches, the diameter of tinned copper monofilament is 0.05mm to 0.08 mm. Further, the lay length of the inner conductor 1 is 10 to 20 times the outer diameter of the inner conductor 1.
The outside of inner conductor 1 is wrapped in proper order and is had moisture barrier 2 in the fluororubber, interior semiconduction shielding layer 3, silane grafting crosslinked low density polyethylene insulating layer 4, outer semiconduction shielding layer 5, the outer moisture barrier 6 of fluororubber, polypropylene hygroscopic layer 7, the compound area of copper plastic is around covering 8, shielding mesh conductor layer 9, PTFE is around band layer 10 and oversheath 11. And a polypropylene moisture absorption core material 12 is filled between the inner conductor 1 and the fluororubber inner moisture-proof layer 2. Moisture barrier 2 in the fluororubber with moisture barrier 6 thickness outside the fluororubber is 0.5mm to 3mm, preferred, moisture barrier 2 in the fluororubber with moisture barrier 6 thickness outside the fluororubber is 1mm to 2 mm. The inner fluororubber moisture-proof layer 2 and the outer fluororubber moisture-proof layer 6 are both of at least two fluororubber layers laminated into an integral structure. The inner semiconductive shield layer 3 and the outer semiconductive shield layer 5 may be formed of an EVA resin layer, for example. In one embodiment, the polypropylene moisture absorption layer 7 is formed by wrapping a polypropylene winding tape on the fluororubber outer moisture-proof layer 6 in a unidirectional spiral overlapping manner. In one embodiment, the copper-plastic composite tape wrapping layer 8 is a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer. In one embodiment, the shielding mesh conductor layer 9 is formed by weaving polyester fiber copper foil filaments and tin-plated copper monofilaments in a reverse spiral winding manner. Preferably, the PTFE wrapping tape layer 10 is a gap wrapping structure. Preferably, the outer sheath 11 is a silane-grafted cross-linked high-density polyethylene outer sheath.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.
Claims (10)
1. Waterproof moisture-proof type insulated cable, characterized by: including inner conductor (1), the outside cladding in inner conductor (1) has in proper order moisture barrier (2), interior semiconductive shield (3), silane grafting cross-linking low density polyethylene insulating layer (4), outer semiconductive shield (5), outer moisture barrier (6) of fluororubber, polypropylene hygroscopic layer (7), copper mould compound area around covering (8), shielding mesh conductor layer (9), PTFE around band layer (10) and oversheath (11), inner conductor (1) with it has polypropylene to inhale wet core (12) to fill between moisture barrier (2) in the fluororubber, moisture barrier (2) in the fluororubber with moisture barrier (6) thickness is 0.5mm to 3mm outside the fluororubber, moisture barrier (2) in the fluororubber with moisture barrier (6) outside the fluororubber are two-layer fluororubber layer at least and laminate structure as an organic whole.
2. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the inner conductor (1) is formed by concentrically twisting a plurality of copper stranded wires, each copper stranded wire is formed by bundling a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.05 mm-0.08 mm.
3. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the lay length of the inner conductor (1) is 10 to 20 times of the outer diameter of the inner conductor (1).
4. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the thickness of the fluororubber inner moisture-proof layer (2) and the fluororubber outer moisture-proof layer (6) is 1mm to 2 mm.
5. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the inner semi-conductive shielding layer (3) and the outer semi-conductive shielding layer (5) are both EVA resin layers.
6. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the polypropylene moisture absorption layer (7) is formed by lapping and wrapping a polypropylene winding belt on the fluororubber outer moisture-proof layer (6) in a unidirectional spiral manner.
7. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the copper-plastic composite tape wrapping layer (8) is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer.
8. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the shielding mesh-shaped conductor layer (9) is formed by spirally winding and weaving polyester fiber copper foil filaments and tin-plated copper monofilaments in opposite directions.
9. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the PTFE wrapping tape layer (10) is of a gap wrapping structure.
10. The water-resistant moisture-proof insulated cable according to claim 1, wherein: the outer sheath (11) is a silane grafted cross-linked high-density polyethylene outer sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375507.6U CN211879091U (en) | 2020-03-23 | 2020-03-23 | Waterproof and moistureproof insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375507.6U CN211879091U (en) | 2020-03-23 | 2020-03-23 | Waterproof and moistureproof insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211879091U true CN211879091U (en) | 2020-11-06 |
Family
ID=73257650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020375507.6U Expired - Fee Related CN211879091U (en) | 2020-03-23 | 2020-03-23 | Waterproof and moistureproof insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211879091U (en) |
-
2020
- 2020-03-23 CN CN202020375507.6U patent/CN211879091U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |