CN220324210U - Impact-resistant small-diameter 5-core low-voltage flame-retardant cable - Google Patents
Impact-resistant small-diameter 5-core low-voltage flame-retardant cable Download PDFInfo
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- CN220324210U CN220324210U CN202322098361.1U CN202322098361U CN220324210U CN 220324210 U CN220324210 U CN 220324210U CN 202322098361 U CN202322098361 U CN 202322098361U CN 220324210 U CN220324210 U CN 220324210U
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- flame
- layer
- cable
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- core
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000003063 flame retardant Substances 0.000 title claims abstract description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 25
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 25
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 18
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 18
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 18
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 9
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims abstract description 6
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 239000000806 elastomer Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 97
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- -1 4-butyl Chemical group 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The utility model discloses an impact-resistant small-diameter 5-core low-voltage flame-retardant cable, which comprises five flame-retardant cable cores, wherein the five flame-retardant cable cores are twisted together around a cross-linked fluororubber central elastomer to form a cable core, a fluororubber dampproof layer, a butyl rubber water-blocking decompression layer, an impact-resistant plain-woven net armor layer, a nylon tape wrapping layer and a tetrafluoroethylene propylene copolymer fluororubber sheath are sequentially coated outside the cable core, the flame-retardant cable cores comprise copper core conductors, and EVA water-blocking inner bonding layers, PTFE semi-oriented tape wrapping insulation layers, polyamide resin inner flame-retardant layers, EVA water-blocking outer bonding layers and polyamide resin outer flame-retardant layers are sequentially coated outside the copper core conductors. The cable has better slight impact resistance, has excellent dampproof and water-blocking properties, and ensures the flame retardance and the insulativity of the cable.
Description
Technical Field
The application belongs to the technical field of cables, and particularly relates to an impact-resistant small-diameter 5-core low-voltage flame-retardant cable.
Background
The cable may be classified into a power cable, a communication cable, a control cable, and the like according to its use. The cable is a rope-like cable formed by twisting a plurality of wire cores, the wire cores are mutually insulated, the cable cores are twisted around a central rope, the cable cores are externally coated with a highly insulating coating layer, and the cable cores are erected in the air or are installed in the ground or the water bottom for telecommunication or power transmission. In recent years, there is an increasing trend toward finer outer diameters of cable wires, but it is an important issue to reduce the thickness of the flame retardant layer and the insulating layer of the cable wires, and to ensure the mechanical strength, impact resistance, moisture-proof and water-blocking properties, flame retardancy and insulation properties of the cable wires.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved is to provide the impact-resistant small-diameter 5-core low-voltage cable which is better in slight impact resistance, has excellent dampproof and water-blocking characteristics, and ensures the flame retardance and the insulativity of the cable.
The technical problems are solved by the following technical scheme.
The utility model provides a low pressure flame retardant cable of thin diameter 5 core of shock resistance, includes five flame retardant core and surrounds a crosslinked fluororubber central elastomer and twist together and constitute the cable core, the outside cladding of cable core has fluororubber dampproof course, butyl rubber water-blocking decompression layer, anti-shock plain weave net armor, nylon tape around covering and tetrafluoroethylene propylene copolymerization fluororubber sheath in proper order, flame retardant core includes the copper core conductor, copper core conductor outside cladding has EVA water-blocking inner adhesive layer, PTFE semi-oriented tape around covering insulating layer, polyamide resin inner flame retardant layer, EVA water-blocking outer adhesive layer and polyamide resin outer flame retardant layer in proper order, PTFE semi-oriented tape around covering insulating layer thickness is not less than 0.3mm, PTFE semi-oriented tape around covering insulating layer thickness is not more than polyamide resin inner flame retardant layer with polyamide resin outer flame retardant layer total thickness 40%.
Preferably, the PTFE semi-oriented tape is not greater than 0.8mm thick around the insulating layer.
Preferably, the PTFE semi-oriented tape wrapping insulating layer is formed by seamlessly wrapping and sintering and sealing a plurality of layers of PTFE semi-oriented tapes.
Preferably, the PTFE semi-oriented tape has an orientation degree of 1.2 to 1.4 and a thickness of 0.05 to 0.1mm.
Preferably, the cable core lay length is 10 to 20 times of the outer diameter of the flame-retardant cable core.
Preferably, the thickness of the EVA water-blocking inner adhesive layer and the EVA water-blocking outer adhesive layer is 20-50 μm.
Preferably, the copper core conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.05mm to 0.3 mm.
Preferably, the butyl rubber water-blocking decompression layer is of a multi-layer covering and wrapping structure of a butyl rubber belt, and the covering rate of the butyl rubber belt is one-fourth to one-half of the width of the butyl rubber belt.
Preferably, the impact-resistant plain weave mesh armor layer comprises an inner layer tinned copper wire plain weave mesh and an outer layer tinned copper wire plain weave mesh, wherein the inner layer tinned copper wire plain weave mesh is a fine tinned copper wire woven to form a plain weave mesh structure, the outer layer tinned copper wire plain weave mesh is a coarse tinned copper wire woven to form a plain weave mesh structure, the wire diameter of the fine tinned copper wire is not less than 0.1mm, the wire diameter of the coarse tinned copper wire is 3 to 8 times of the wire diameter of the fine tinned copper wire, and the weaving density of the inner layer tinned copper wire plain weave mesh is greater than that of the outer layer tinned copper wire plain weave mesh.
Preferably, the tetrafluoroethylene propylene copolymer fluororubber sheath has a thickness of 1mm to 2mm.
The beneficial effects of this application:
1. the thickness of the PTFE semi-oriented tape wrapping insulating layer is not less than 0.3mm, and the thickness of the PTFE semi-oriented tape wrapping insulating layer is not more than 20% of the total thickness of the inner and outer flame retardant layers of the polyamide resin. The insulation layer has good flame retardant property while ensuring mechanical strength, the copper core conductor and the insulation layer are effectively isolated by adding the EVA water-blocking inner adhesive layer, water is prevented from diffusing to the insulation layer through the conductor, the EVA water-blocking outer adhesive layer is added between the inner flame-blocking layer and the outer flame-blocking layer of the polyamide resin to form an integrated adhesive structure, the structural strength of the flame-blocking layer is improved, and the insulation layer is beneficial to inhibiting the penetration of water vapor in the cable core from the outside to the inside, so that the deterioration of flame retardant property is prevented, and the excellent flame retardant property, insulation property and electrical property in the cable core are ensured.
2. The anti-impact plain weave net armor layer adopting the inner and outer layer tinned copper wire plain weave net double-layer structure is additionally arranged outside the cable core, the copper wire diameter of the outer layer tinned copper wire plain weave net is larger than that of the inner layer tinned copper wire plain weave net, and the cable core is beneficial to enhancing the mechanical strength of the armor layer, improving the slight impact resistance and having better durability while taking flexibility into consideration.
3. The fluorine rubber moisture-proof layer has moisture-proof and water-blocking properties, and the butyl rubber water-blocking decompression layer enhances the moisture-proof and water-blocking functions, so that the diffusion of water to the cable core is effectively inhibited, the safety and reliability of the cable are improved, and the service life of the cable is prolonged.
Drawings
Fig. 1 is a schematic cross-sectional structure of an embodiment of the present application.
Reference numerals illustrate:
the cable comprises a 1-flame-retardant cable core, a 2-crosslinked fluororubber central elastomer, a 3-fluororubber moisture-proof layer, a 4-butyl rubber water-blocking decompression layer, a 5-impact-resistant plain-woven net armor layer, a 6-nylon tape wrapping layer, a 7-tetrafluoroethylene propylene copolymer fluororubber sheath, an 8-copper core conductor, a 9-EVA water-blocking inner bonding layer, a 10-PTFE semi-oriented tape wrapping insulation layer, an 11-polyamide resin inner flame-retardant layer, a 12-EVA water-blocking outer bonding layer and a 13-polyamide resin outer flame-retardant layer.
Description of the embodiments
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1, the impact-resistant small-diameter 5-core low-voltage flame-retardant cable of the embodiment of the application comprises five flame-retardant wire cores 1 which are twisted together around a cross-linked fluororubber central elastomer 2 to form a cable core, wherein the twisting pitch of the cable core is 10 to 20 times of the outer diameter of the flame-retardant wire cores 1. The flame-retardant wire core 1 comprises a copper core conductor 8, and specifically, the copper core conductor 8 is formed by concentrically twisting a plurality of tin-plated copper monofilaments with diameters of 0.05mm to 0.3 mm. The copper core conductor 8 is sequentially coated with an EVA water-blocking inner bonding layer 9, a PTFE semi-oriented tape wrapping insulating layer 10, a polyamide resin inner flame-retardant layer 11, an EVA water-blocking outer bonding layer 12 and a polyamide resin outer flame-retardant layer 13. In one embodiment, the PTFE semi-oriented tape wrapping insulating layer 10 is formed by seamless wrapping and sintering and sealing of a plurality of layers of PTFE semi-oriented tapes, and further, the PTFE semi-oriented tapes have an orientation degree of 1.2 to 1.4 and a thickness of 0.05 to 0.1mm. The thickness of the PTFE semi-oriented tape wrapping insulating layer 10 is not less than 0.3mm, and further, the thickness of the PTFE semi-oriented tape wrapping insulating layer 10 is not more than 0.8mm. The thickness of the PTFE semi-oriented tape wrapped insulation layer 10 is not more than 40% of the total thickness of the polyamide resin inner flame retardant layer 11 and the polyamide resin outer flame retardant layer 13. The thickness of the EVA water-blocking inner adhesive layer 9 and the EVA water-blocking outer adhesive layer 12 is 20-50 mu m.
The cable core is sequentially coated with a fluororubber moisture-proof layer 3, a butyl rubber water-blocking decompression layer 4, an anti-impact plain-weave net armor layer 5, a nylon tape wrapping layer 6 and a tetrafluoroethylene propylene copolymer fluororubber sheath 7. In one embodiment, the butyl rubber water-blocking decompression layer 4 is a butyl rubber tape multi-layer lapping structure, and the butyl rubber tape lapping rate is one-fourth to one-half of the width of the butyl rubber tape. In one embodiment, the impact-resistant plain weave mesh armor 5 comprises an inner layer tinned copper wire plain weave mesh and an outer layer tinned copper wire plain weave mesh, the inner layer tinned copper wire plain weave mesh is a fine tinned copper wire woven to form a plain weave mesh structure, the outer layer tinned copper wire plain weave mesh is a coarse tinned copper wire woven to form a plain weave mesh structure, the wire diameter of the fine tinned copper wire is not less than 0.1mm, the coarse tinned copper wire diameter is 3 to 8 times the wire diameter of the fine tinned copper wire, and the inner layer tinned copper wire plain weave mesh woven density is greater than the outer layer tinned copper wire plain weave mesh woven density. The tetrafluoroethylene propylene copolymer fluororubber sheath 7 has a thickness of 1mm to 2mm.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (10)
1. An impact-resistant small-diameter 5-core low-voltage flame-retardant cable is characterized in that: the cable comprises five flame-retardant cable cores (1) which are formed by jointly twisting a cross-linked fluororubber central elastomer (2) around, wherein fluororubber moisture-proof layers (3), butyl rubber water-blocking decompression layers (4), anti-impact plain weave net armor layers (5), nylon tape wrapping layers (6) and tetrafluoroethylene propylene copolymer fluororubber sheaths (7) are sequentially coated outside the cable cores, the flame-retardant cable cores (1) comprise copper core conductors (8), EVA water-blocking inner bonding layers (9), PTFE semi-oriented tape wrapping insulation layers (10), polyamide resin inner flame-retardant layers (11), EVA water-blocking outer bonding layers (12) and polyamide resin outer flame-retardant layers (13) are sequentially coated outside the copper core conductors (8), the thickness of the PTFE semi-oriented tape wrapping insulation layers (10) is not smaller than 0.3mm, and the thickness of the PTFE semi-oriented tape wrapping insulation layers (10) is not more than 40% of the total thickness of the polyamide resin inner flame-retardant layers (11) and the polyamide resin outer flame-retardant layers (13).
2. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the thickness of the PTFE semi-oriented tape wrapping insulating layer (10) is not more than 0.8mm.
3. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the PTFE semi-oriented tape wrapping insulating layer (10) is formed by seamlessly wrapping and sintering and sealing a plurality of layers of PTFE semi-oriented tapes.
4. The impact resistant, small diameter 5 core low voltage flame retardant cable of claim 3, characterized by: the PTFE semi-oriented tape has an orientation degree of 1.2 to 1.4 and a thickness of 0.05 to 0.1mm.
5. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the cable core lay length is 10 to 20 times of the outer diameter of the flame-retardant wire core (1).
6. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the thickness of the EVA water-blocking inner adhesive layer (9) and the EVA water-blocking outer adhesive layer (12) is 20-50 mu m.
7. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the copper core conductor (8) is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.05mm to 0.3 mm.
8. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the butyl rubber water-blocking decompression layer (4) is of a multi-layer covering and wrapping structure of a butyl rubber belt, and the covering rate of the butyl rubber belt is one fourth to one half of the width of the butyl rubber belt.
9. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the anti-impact plain weave net armor (5) comprises an inner layer tinned copper wire plain weave net and an outer layer tinned copper wire plain weave net, wherein the inner layer tinned copper wire plain weave net is a fine tinned copper wire woven to form a plain weave net structure, the outer layer tinned copper wire plain weave net is a coarse tinned copper wire woven to form a plain weave net structure, the wire diameter of the fine tinned copper wire is not less than 0.1mm, the wire diameter of the coarse tinned copper wire is 3 to 8 times of the wire diameter of the fine tinned copper wire, and the weaving density of the inner layer tinned copper wire plain weave net is greater than that of the outer layer tinned copper wire plain weave net.
10. The impact resistant small diameter 5 core low voltage flame retardant cable of claim 1, characterized by: the thickness of the tetrafluoroethylene propylene copolymer fluororubber sheath (7) is 1mm to 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322098361.1U CN220324210U (en) | 2023-08-07 | 2023-08-07 | Impact-resistant small-diameter 5-core low-voltage flame-retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322098361.1U CN220324210U (en) | 2023-08-07 | 2023-08-07 | Impact-resistant small-diameter 5-core low-voltage flame-retardant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220324210U true CN220324210U (en) | 2024-01-09 |
Family
ID=89425017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322098361.1U Active CN220324210U (en) | 2023-08-07 | 2023-08-07 | Impact-resistant small-diameter 5-core low-voltage flame-retardant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220324210U (en) |
-
2023
- 2023-08-07 CN CN202322098361.1U patent/CN220324210U/en active Active
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