CN218069390U - Tensile 4-core low-voltage fire-resistant cable - Google Patents
Tensile 4-core low-voltage fire-resistant cable Download PDFInfo
- Publication number
- CN218069390U CN218069390U CN202221080399.5U CN202221080399U CN218069390U CN 218069390 U CN218069390 U CN 218069390U CN 202221080399 U CN202221080399 U CN 202221080399U CN 218069390 U CN218069390 U CN 218069390U
- Authority
- CN
- China
- Prior art keywords
- core
- cable
- high temperature
- layer
- resistant
- 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.)
- Active
Links
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 29
- 239000004020 conductor Substances 0.000 claims abstract description 21
- 229920001778 nylon Polymers 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 239000003365 glass fiber Substances 0.000 claims abstract description 17
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 16
- 229910000077 silane Inorganic materials 0.000 claims abstract description 13
- 239000004677 Nylon Substances 0.000 claims abstract description 12
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 12
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims abstract 4
- 239000004760 aramid Substances 0.000 claims description 12
- 229920003235 aromatic polyamide Polymers 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 230000017105 transposition Effects 0.000 claims description 2
- 238000004132 cross linking Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 36
- 238000005452 bending Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010618 wire wrap Methods 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 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 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Images
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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a stretch-proofing 4 core low pressure fire resisting cable, including four insulation core through the stretch-proofing nylon fiber core strip of rhombus keep mutual interval and strand jointly and form the cable core, spacing distance between the insulation core is not less than 0.3mm, the outside cladding of cable core has high temperature fire prevention area to wind covering, nylon area around covering and silane grafting crosslinked high density polyethylene oversheath in proper order, insulation core includes the inner conductor and the cladding in proper order the outside PTFE insulating layer of inner conductor, high temperature glass fiber area are around covering and aramid fiber twist winding layer, and aramid fiber twist winding layer is the one-way spiral of aramid fiber twist around the package structure, and the screw direction of aramid fiber twist is the same with high temperature glass fiber area around the covering direction, and the external diameter of silane grafting crosslinked high density polyethylene oversheath is 10.5mm to 13.6mm. The anti-stretching performance of the fire-resistant cable is improved and the safety and reliability of the fire-resistant cable are enhanced by optimizing the cable core structure and the fire-resistant layer structure.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a stretch-proofing 4 core low pressure fire resisting cable.
Background
The development of the power cable industry also has the situations of low concentration, dispersed technical strength and the like. The fire-resistant cable produced at present has thick insulation thickness, can generate a large amount of heat value release during combustion, and an insulation layer is fused to bring harm to an inner conductor, along with the improvement of fire-resistant requirements, the requirements of various industries on fire-resistant cable products are developed towards high performance and high quality, the fire-resistant cable is increasingly adopted, different process technical requirements are required on the design of the fire-resistant cable compared with common cables, the safety performance can be ensured only by having a more reliable fire-resistant function, and meanwhile, the manufacturing requirements of the flexibility and the tensile resistance of the fire-resistant cable need to be considered.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a 4 core low pressure fire resisting cable of stretch-proofing type, optimizes cable core structure, flame retardant coating structure, improves stretch-proofing performance, reinforcing fire resisting cable's fail safe nature.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
A stretch-resistant 4-core low-voltage fire-resistant cable comprises four insulation wire cores, wherein the four insulation wire cores are mutually spaced and jointly stranded through a rhombic stretch-resistant nylon fiber core strip to form a cable core, the spacing distance between the insulation wire cores is not less than 0.3mm, the exterior of the cable core is sequentially wrapped with a high-temperature fire-resistant tape wrapping layer, a nylon tape wrapping layer and a silane grafted and crosslinked high-density polyethylene outer sheath, each insulation wire core comprises an inner conductor, and the insulation wire cores are sequentially wrapped with a PTFE insulation layer, a high-temperature glass fiber tape wrapping layer and an aramid twisted wire wrapping layer which are arranged on the exterior of the inner conductor, the high-temperature fire-resistant tape wrapping layer is a high-temperature fire-resistant tape one-way lapping and covering wrapping structure, the high-temperature fire-resistant tape wrapping layer is a high-temperature fire-resistant tape one-way lapping and covering bonding integrated structure, the high-temperature glass fiber tape wrapping layer is a high-temperature glass tape one-way lapping and covering wrapping structure, the aramid twisted wire winding layer is an aramid one-way spiral wrapping structure, the spiral direction of the aramid twisted wire is the same as the wrapping direction of the high-temperature polyethylene tape, and the silane grafted and crosslinked high-density polyethylene outer diameter is 10.5-13.6 mm.
Preferably, the inner conductor is formed by stranding a plurality of tinned copper monofilaments with the diameter of 0.12mm to 0.28 mm.
Preferably, the lay length of the inner conductor is 10 to 30 times of the outer diameter of the inner conductor.
Preferably, the winding distance of the aramid twisted yarn is 3mm to 8mm.
Preferably, the spiral direction of the aramid twisted wire is the same as the twisting direction of the cable core.
Preferably, the diameter of the aramid twisted yarn is 0.18mm to 0.26mm.
Preferably, the nylon tape lapping layer is a multilayer lapping and lapping structure of the nylon tape and has a thickness of 0.3mm to 0.5mm.
Preferably, the PTFE insulating layer has a thickness of 1.5mm to 2.8mm.
Preferably, the lay length of the cable core is 10 to 15 times of the outer diameter of the insulated wire core.
Preferably, the outer sheath of the silane grafted and crosslinked high density polyethylene has a thickness of 1.6mm to 4.8mm.
The utility model has the advantages that:
1. through the special structure of the diamond stretch-proofing nylon fiber core strip, lateral pressure when bending can be born, the flexibility and stretch-proofing performance of the fire-resistant cable are improved, meanwhile, the diamond stretch-proofing nylon fiber core strip enables the cable to keep a better circular section in the bending process, local stress concentration of an inner conductor is reduced, deformation and wire breakage of the inner conductor are prevented, the spacing distance between the insulated wire cores is not less than 0.3mm, the stable electrical characteristic of the fire-resistant cable is guaranteed, and the extrusion resistance and the bending resistance of the insulated wire cores are improved.
2. Make the effective fire prevention of insulation core keep apart around covering and aramid fiber twist winding layer through high temperature glass fiber tape, it is fixed around the covering to wind the high temperature glass fiber tape through aramid fiber twist winding layer, the screw direction of aramid fiber twist is the same with the winding direction of high temperature glass fiber tape, can effectively fix high temperature glass fiber tape, improve the fire resistance of cable, the outside high temperature fire prevention area of cable core winds the covering and presss from both sides core bonding body structure for interior outer coating of crosslinked polyethylene resin and mica tape intermediate layer three-layer, help improving high temperature resistant, on the basis of thermal-insulated insulating property, effectively prolong heat-conduction to the inside time of cable core, reduce the inside temperature of cable, improve the heat-resisting ageing-resistant performance of insulating layer, the fail safe nature of improvement cable.
3. The silane grafted crosslinked high-density polyethylene outer sheath has a small static friction coefficient, is beneficial to improving the flexibility of the cable, has strong capability of adapting to low-temperature working condition environment, is not easy to crack, and has better durability and usability.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: the cable comprises 1-an insulating wire core, 2-a diamond stretch-resistant nylon fiber core strip, 3-a high-temperature fireproof tape wrapping layer, 4-a nylon tape wrapping layer, a 5-silane grafted cross-linked high-density polyethylene outer sheath, 6-an inner conductor, 7-a PTFE insulating layer, 8-a high-temperature glass fiber tape wrapping layer and 9-an aramid twisted wire wrapping layer.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.
As shown in fig. 1, the utility model provides a stretch-proofing type 4 core low pressure fire resisting cable, including four insulation core 1 through the stretch-proofing nylon fiber core strip 2 of rhombus keep mutual interval and transposition jointly form the cable core, the spacing distance between insulation core 1 is not less than 0.3mm, the lay length of cable core does 10 to 15 times of 1 external diameter of insulation core. The insulated wire core 1 comprises an inner conductor 6 and a PTFE (polytetrafluoroethylene) insulating layer 7, a high-temperature glass fiber tape wrapping layer 8 and an aramid twisted wire winding layer 9 which are sequentially coated outside the inner conductor 6. Specifically, the inner conductor 6 is formed by stranding a plurality of tinned copper monofilaments with the diameter of 0.12mm to 0.28mm, and further, the stranding distance of the inner conductor 6 is 10 to 30 times of the outer diameter of the inner conductor 6. Preferably, the PTFE insulating layer 7 is 1.5mm to 2.8mm thick. The high-temperature glass fiber tape wrapping layer 8 is of a high-temperature glass fiber tape one-way lapping and covering wrapping structure. The aramid fiber twisted wire winding layer 9 is an aramid fiber twisted wire unidirectional spiral wrapping structure, is preferable, the wire diameter of the aramid fiber twisted wire is 0.18mm to 0.26mm, and is preferable, and the winding distance of the aramid fiber twisted wire is 3mm to 8mm. The spiral direction of the aramid fiber twisted wire is the same as the wrapping direction of the high-temperature glass fiber tape, and further, the spiral direction of the aramid fiber twisted wire is the same as the twisting direction of the cable core.
And the high-temperature fireproof tape wrapping layer 3, the nylon tape wrapping layer 4 and the silane grafted cross-linked high-density polyethylene outer sheath 5 are sequentially wrapped outside the cable core. The high-temperature fireproof belt wrapping layer 3 is a high-temperature fireproof belt one-way lapping and wrapping structure, and the high-temperature fireproof belt is a three-layer sandwich bonding integrated structure of an inner wrapping layer and an outer wrapping layer of crosslinked polyethylene resin and a mica belt interlayer. In one embodiment, the nylon tape lapping layer 4 is a multi-layer lapping and lapping structure of nylon tapes and has a thickness of 0.3mm to 0.5mm. The outer diameter of the silane grafted crosslinked high-density polyethylene outer sheath 5 is 10.5mm to 13.6mm. The thickness of the silane grafted cross-linked high-density polyethylene outer sheath 5 is 1.6mm to 4.8mm.
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. Stretch-proofing 4 core low pressure fire resisting cable of type, characterized by: keep mutual interval and transposition jointly through rhombus stretch-proofing nylon fiber core strip (2) including four insulation core (1) and form the cable core, spacing distance between insulation core (1) is not less than 0.3mm, the cable core outside cladding in proper order has high temperature fire prevention area around covering (3), nylon area around covering (4) and silane grafting crosslinking high density polyethylene oversheath (5), insulation core (1) includes inner conductor (6) and cladding in proper order PTFE insulating layer (7), the high temperature glass fiber area of inner conductor (6) outside wind covering (8) and aramid fiber twist line winding layer (9), high temperature fire prevention area is around covering for high temperature fire prevention area one-way lapping around the covering (3), the high temperature fire prevention area is interior outer coating of crosslinked polyethylene resin and mica tape intermediate layer bonding integral structure, high temperature glass fiber area winding layer (8) is high temperature glass fiber area one-way lapping around covering structure, aramid fiber twist line winding layer (9) is the one-way spiral structure of twisting line, the spiral direction of aramid fiber twist line with the spiral winding the high temperature core three-layer of high temperature glass fiber area with the same silane grafting external diameter of winding (13.5 mm to the high temperature grafting polyethylene oversheath.
2. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the inner conductor (6) is formed by twisting a plurality of tinned copper monofilaments with the diameters of 0.12mm to 0.28 mm.
3. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the lay length of the inner conductor (6) is 10 to 30 times of the outer diameter of the inner conductor (6).
4. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the winding distance of the aramid twisted wire is 3mm to 8mm.
5. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the spiral direction of the aramid twisted wire is the same as the twisting direction of the cable core.
6. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the diameter of the aramid twisted wire is 0.18mm to 0.26mm.
7. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the nylon tape lapping layer (4) is a nylon tape multi-layer lapping and covering lapping structure, and the thickness of the nylon tape lapping layer is 0.3mm to 0.5mm.
8. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the thickness of the PTFE insulating layer (7) is 1.5mm to 2.8mm.
9. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the lay length of the cable core is 10-15 times of the outer diameter of the insulated wire core (1).
10. The stretch resistant 4-core low voltage fire resistant cable of claim 1, wherein: the thickness of the silane grafted cross-linked high-density polyethylene outer sheath (5) is 1.6mm to 4.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221080399.5U CN218069390U (en) | 2022-05-07 | 2022-05-07 | Tensile 4-core low-voltage fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221080399.5U CN218069390U (en) | 2022-05-07 | 2022-05-07 | Tensile 4-core low-voltage fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218069390U true CN218069390U (en) | 2022-12-16 |
Family
ID=84430618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221080399.5U Active CN218069390U (en) | 2022-05-07 | 2022-05-07 | Tensile 4-core low-voltage fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218069390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116153572A (en) * | 2023-04-20 | 2023-05-23 | 浙江元通线缆制造有限公司 | Weather-proof anti-corrosion fireproof cable |
-
2022
- 2022-05-07 CN CN202221080399.5U patent/CN218069390U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116153572A (en) * | 2023-04-20 | 2023-05-23 | 浙江元通线缆制造有限公司 | Weather-proof anti-corrosion fireproof cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217361193U (en) | Fireproof rodent and ant underground cable | |
| CN112837851A (en) | Waterproof reinforced low-voltage fireproof cable and preparation method thereof | |
| CN220526656U (en) | Control cable for inhibiting wire breakage of shielding layer | |
| CN219832263U (en) | Fire-resistant self-supporting multi-core control cable | |
| CN217008750U (en) | Fire-resistant anti-aging prefabricated branch cable | |
| CN217239121U (en) | Environment-friendly flexible mineral insulation fireproof cable | |
| CN217847527U (en) | Light environment-friendly digital monitoring comprehensive flat cable | |
| CN217239105U (en) | Steel wire reinforced heat-resistant flame-retardant rubber jacketed flexible cable | |
| CN214476597U (en) | Bending-resistant 5-core fireproof cable | |
| CN211265005U (en) | Bending-resistant 3-core low-voltage fireproof cable | |
| CN211906988U (en) | Torsion-resistant protective sleeve fracture type four-core insulated cable | |
| CN210692188U (en) | Flexible ageing-resistant shielding twisted-pair cable | |
| CN219497367U (en) | Elastic recovery type bending-resistant 5-core low-voltage fireproof aluminum alloy cable | |
| CN217008727U (en) | Stretch-proofing marine combination cable | |
| CN217008761U (en) | Small-diameter bending-resistant 5-core low-voltage fireproof cable | |
| CN220065221U (en) | Tension-resistant medium-voltage power cable capable of inhibiting wire breakage | |
| CN217444106U (en) | Environment-friendly low-smoke fire-resistant armored control cable | |
| CN214705531U (en) | Bending-resistant middle-low voltage fireproof cable | |
| CN215376970U (en) | Flexible single-core power cable | |
| CN220324184U (en) | Multi-core insulated cable for inhibiting cracking of shielding layer | |
| CN223051910U (en) | Fire-resistant reinforced 3-core aluminum alloy cable | |
| CN219497389U (en) | High-temperature-resistant overcurrent early-warning type symmetrical communication cable for ship | |
| CN214624496U (en) | Twist-resistant water-blocking insulated cable | |
| CN221884713U (en) | Bending-resistant four-core lead sheath low-voltage armored cable | |
| CN211265006U (en) | Bending-resistant middle-low voltage single-core cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |