CN214152501U - Moisture-proof and breakage-proof single-core insulated cable - Google Patents
Moisture-proof and breakage-proof single-core insulated cable Download PDFInfo
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- CN214152501U CN214152501U CN202120221862.2U CN202120221862U CN214152501U CN 214152501 U CN214152501 U CN 214152501U CN 202120221862 U CN202120221862 U CN 202120221862U CN 214152501 U CN214152501 U CN 214152501U
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- Prior art keywords
- proof
- layer
- single core
- moisture
- copper wire
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims abstract description 16
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 16
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 16
- 229910000077 silane Inorganic materials 0.000 claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 claims abstract description 12
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001155 polypropylene Polymers 0.000 claims abstract description 12
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 5
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 238000004132 cross linking Methods 0.000 claims abstract description 4
- 238000009422 external insulation Methods 0.000 claims abstract description 4
- 238000009421 internal insulation Methods 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 9
- 238000009941 weaving Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 240000005572 Syzygium cordatum Species 0.000 abstract description 4
- 235000006650 Syzygium cordatum Nutrition 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001934 delay Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a dampproofing single core insulated cable of broken string type of preventing, reach including single core conductor the outside cladding in proper order of single core conductor has polypropylene moisture absorption layer, first fluororubber dampproof course, the linear low density polyethylene internal insulation layer of silane grafting crosslinking, ETFE external insulation layer, second fluororubber dampproof course, copper wire to weave shielding layer and tetrafluoroethylene propylene copolymerization fluororubber oversheath layer, the external diameter of single core conductor is 4.5mm to 12 mm. The single-core insulated cable has excellent waterproof and moistureproof performance, delays the aging phenomenon of water trees, has excellent insulating performance, is not easy to break a shielding layer, has stable shielding effect and better laying environmental adaptability.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a dampproofing single core insulated cable of broken string type of preventing.
Background
Coaxial cables are one of the main varieties of wire cables. The coaxial cable needs to have good flexibility and shielding performance. However, the industrial application site environment is complex, and in the actual laying process, after the common coaxial cable is bent or twisted, the disconnection phenomenon of the shielding layer is easy to occur, the shielding effect is unstable, the electrical characteristics of long-distance transmission are poor, and the durability is affected. Moreover, when the cable is laid, the phenomenon that the cable is affected with damp and enters water sometimes occurs, water vapor permeates into the cable, the water tree aging phenomenon can occur under the action of an electric field, the insulation of the cable is damaged, and finally the cable breakdown accident is caused, so that the potential hidden danger of influencing the safe operation of the cable is formed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a dampproofing anti-breaking line type single core insulated cable, has excellent dampproofing and waterproofing performance, delays the ageing phenomenon of water tree, and insulating properties is excellent, and the difficult broken string of shielding layer, shielding effect is stable, lays environmental suitability better.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
Dampproofing broken line type single core insulated cable of preventing, including single core conductor and the outside cladding in proper order of single core conductor has polypropylene hygroscopic layer, first fluororubber dampproof course, silane grafting cross-linking linear low density polyethylene internal insulation layer, ETFE external insulation layer, second fluororubber dampproof course, copper wire to weave shielding layer and tetrafluoroethylene propylene copolymerization fluororubber oversheath layer, the external diameter of single core conductor is 4.5mm to 12 mm.
Preferably, the polypropylene moisture absorption layer is formed by wrapping a polypropylene winding tape on the single-core conductor in a unidirectional spiral overlapping manner.
Preferably, the single-core conductor is formed by concentrically twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.02mm to 0.45 mm.
Preferably, the thickness of the silane grafted crosslinked linear low density polyethylene inner insulating layer is greater than that of the ETFE outer insulating layer.
Preferably, the thickness of the ETFE outer insulating layer is one-fourth to one-half of the thickness of the silane-grafted crosslinked linear low-density polyethylene inner insulating layer.
Preferably, the thickness of the first fluororubber moisture-proof layer and the second fluororubber moisture-proof layer is not more than 2 mm.
Preferably, the copper wire braided shielding layer is formed by spirally winding inner and outer double-layer tinned copper wires in the same direction, the winding distance and the spiral angle degree of the inner layer tinned copper wire and the outer layer tinned copper wire are the same, and the wire diameter of the inner layer tinned copper wire is smaller than that of the outer layer tinned copper wire.
Preferably, the helix angle is 50 degrees to 70 degrees, the diameter of the inner layer of the tinned copper wire is 0.05mm to 0.12mm, and the diameter of the outer layer of the tinned copper wire is 0.08mm to 0.18 mm.
Preferably, the weaving density of the copper wire weaving shielding layer is 92% to 98%.
Preferably, the silane grafted crosslinked linear low-density polyethylene inner insulating layer and the ETFE outer insulating layer are of a co-extrusion molding structure.
The utility model has the advantages that:
1. through set up second fluororubber dampproof course and tetrafluoroethylene propylene copolymerization fluororubber oversheath layer respectively outside in the shielding layer is woven to the copper wire, the rubber layer of inside and outside both sides provides better shock resistance for the shielding layer is woven to the copper wire, has improved the pliability greatly, and difficult emergence broken string guarantees the stability of cable shielding effect.
2. First fluororubber dampproof course and second fluororubber dampproof course have excellent dampproofing water blocking performance, have inhibited moisture to the insulating layer diffusion, delay the insulating layer and take place the ageing phenomenon of water tree, and when the cable temperature rose, the moisture that comes from the polypropylene hygroscopic layer was effectively obstructed by first fluororubber dampproof course, guarantee excellent electrical insulation characteristic, and voltage resistance is better, extension cable life.
3. The insulating layer adopts silane graft cross-linked linear low density polyethylene inner insulating layer and ETFE outer insulating layer, the ETFE outer insulating layer has excellent wear resistance, bending resistance and heat resistance, the silane graft cross-linked linear low density polyethylene inner insulating layer has small static friction coefficient and better flexibility, the thickness of the inner insulating layer is larger than that of the outer insulating layer, and the insulating layer has better bending resistance and flexibility on the premise of obtaining excellent wear resistance by optimizing the thickness ratio.
4. The inner layer tinned copper wire diameter of the copper wire braided shielding layer is smaller than the outer layer tinned copper wire diameter, flexibility of the cable is improved, inner layer tinned copper wire braiding density is large, internal signals can be prevented from being leaked to the outside, the electrical resistance of the outer layer tinned copper wire is small, and interference from external signals can be restrained. The inner layer tinned copper wire line footpath is different with outer layer tinned copper wire line footpath, can effectually reduce to weave the gap, and the friction phenomenon that produces between the greatly reduced tinned copper wire helps increasing the pliability and the antitorque commentaries on classics nature of cable when improving the noise shielding characteristic, is difficult for appearing the broken string phenomenon.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: the composite material comprises, by weight, 1-single-core conductor, 2-polypropylene moisture absorption layer, 3-first fluororubber moisture-proof layer, 4-silane grafted crosslinked linear low-density polyethylene inner insulating layer, 5-ETFE outer insulating layer, 6-second fluororubber moisture-proof layer, 7-copper wire braided shielding layer and 8-tetrafluoroethylene propylene copolymerized fluororubber outer sheath layer.
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 discloses single core insulated cable of disconnection type is prevented in dampproofing, including single core conductor 1, specific theory, single core conductor 1 constitutes for the concentric transposition of a plurality of tinned copper monofilament, tinned copper monofilament line footpath is 0.02mm to 0.45 mm.
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. Dampproofing prevent disconnected line type single core insulated cable, characterized by: including single core conductor (1) and single core conductor (1) outside cladding in proper order has polypropylene hygroscopic layer (2), first fluororubber dampproof course (3), silane grafting cross-linking linear low density polyethylene internal insulation layer (4), ETFE external insulation layer (5), second fluororubber dampproof course (6), copper wire to weave shielding layer (7) and tetrafluoroethylene propylene copolymerization fluororubber oversheath layer (8), the external diameter of single core conductor (1) is 4.5mm to 12 mm.
2. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the polypropylene moisture absorption layer (2) is formed by lapping polypropylene winding tapes on the single-core conductor (1) in a unidirectional spiral manner.
3. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the single-core conductor (1) is formed by concentrically twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.02mm to 0.45 mm.
4. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the thickness of the silane grafted cross-linked linear low-density polyethylene inner insulating layer (4) is larger than that of the ETFE outer insulating layer (5).
5. The moisture-proof breakage-proof linear single core insulated cable according to claim 4, wherein: the thickness of the ETFE outer insulating layer (5) is one fourth to one half of the thickness of the silane grafted crosslinked linear low-density polyethylene inner insulating layer (4).
6. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the thickness of the first fluororubber moisture-proof layer (3) and the thickness of the second fluororubber moisture-proof layer (6) are not more than 2 mm.
7. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the copper wire braided shielding layer (7) is formed by spirally winding an inner tinned copper wire and an outer tinned copper wire in the same direction, the winding distance and the spiral angle of the inner tinned copper wire and the outer tinned copper wire are the same, and the wire diameter of the inner tinned copper wire is smaller than that of the outer tinned copper wire.
8. The moisture-proof breakage-proof linear single core insulated cable according to claim 7, wherein: the spiral angle is 50 degrees to 70 degrees, the diameter of the inner layer of the tinned copper wire is 0.05mm to 0.12mm, and the diameter of the outer layer of the tinned copper wire is 0.08mm to 0.18 mm.
9. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the weaving density of the copper wire weaving shielding layer (7) is 92-98%.
10. The moisture-proof breakage-proof linear single core insulated cable according to claim 1, wherein: the silane grafted crosslinked linear low-density polyethylene inner insulating layer (4) and the ETFE outer insulating layer (5) are of a co-extrusion molding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221862.2U CN214152501U (en) | 2021-01-27 | 2021-01-27 | Moisture-proof and breakage-proof single-core insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221862.2U CN214152501U (en) | 2021-01-27 | 2021-01-27 | Moisture-proof and breakage-proof single-core insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214152501U true CN214152501U (en) | 2021-09-07 |
Family
ID=77549050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120221862.2U Expired - Fee Related CN214152501U (en) | 2021-01-27 | 2021-01-27 | Moisture-proof and breakage-proof single-core insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214152501U (en) |
-
2021
- 2021-01-27 CN CN202120221862.2U patent/CN214152501U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |