CN220121528U - High-performance flame-retardant fireproof waterproof power cable - Google Patents
High-performance flame-retardant fireproof waterproof power cable Download PDFInfo
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- CN220121528U CN220121528U CN202223396101.4U CN202223396101U CN220121528U CN 220121528 U CN220121528 U CN 220121528U CN 202223396101 U CN202223396101 U CN 202223396101U CN 220121528 U CN220121528 U CN 220121528U
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- fireproof
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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 35
- 239000003063 flame retardant Substances 0.000 title claims abstract description 35
- 239000010410 layer Substances 0.000 claims abstract description 128
- 238000011049 filling Methods 0.000 claims abstract description 7
- 239000011247 coating layer Substances 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 35
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- 230000001681 protective effect Effects 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000010445 mica Substances 0.000 claims description 12
- 229910052618 mica group Inorganic materials 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 11
- 230000009970 fire resistant effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 claims 1
- 150000002367 halogens Chemical class 0.000 claims 1
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Abstract
The utility model discloses a high-performance flame-retardant fireproof waterproof power cable, which comprises a cable core, wherein the periphery of the cable core is sequentially coated with a comprehensive waterproof layer, a comprehensive fireproof layer and an outer coating layer from inside to outside; the cable core comprises a plurality of insulating wire cores and filling wires, wherein the insulating wire cores are circumferentially distributed and stranded, and the filling wires are distributed in areas among the insulating wire cores and respectively contacted with the insulating wire cores. Compared with the prior art, the high-performance flame-retardant fireproof waterproof power cable provided by the utility model has better flexibility, waterproof property, fireproof property, flame retardance and environmental protection.
Description
Technical Field
The utility model relates to a power cable, in particular to a high-performance flame-retardant fireproof waterproof power cable.
Background
At present, the low-voltage fireproof cable has two structures, the first is a mica tape insulation metal corrugated sheath low-voltage fireproof cable, the second is a composite insulation nonmetal sleeve low-voltage fireproof cable, and the two structures mainly have the following defects:
the insulation of first kind cable is that the mica tape forms around the package, and the cable is when the outside metal ripple sheath of cable core appears the leak if receive external force effect in the use, and outside moisture or moisture slowly get into inside the cable core, and the mica tape insulation is because of its dielectric property decline of wetting, and the leakage current increases gradually, finally leads to insulation breakdown.
The insulation of the second cable is a mica tape and crosslinked polyethylene insulated composite structure, the crosslinked polyethylene insulated insulation performance is good, but the cable core is provided with a fireproof layer with fireproof mud, and the fireproof mud is hard and poor in bending performance.
From the above description, it can be seen that the waterproof performance, insulating performance and fireproof performance of the current fireproof power cable need to be improved.
Disclosure of Invention
Aiming at the problems of the prior fireproof power cable, the utility model aims to provide a high-performance flame-retardant fireproof waterproof power cable so as to overcome the problems of the prior art.
In order to achieve the purpose, the high-performance flame-retardant fireproof waterproof power cable provided by the utility model comprises a cable core, wherein the periphery of the cable core is sequentially coated with a comprehensive waterproof layer, a comprehensive fireproof layer and an outer coating layer from inside to outside;
the cable core comprises a plurality of insulating wire cores and filling wires, wherein the insulating wire cores are circumferentially distributed and stranded, and the filling wires are distributed in areas among the insulating wire cores and respectively contacted with the insulating wire cores.
Further, the insulated wire core comprises a conductor, and the periphery of the conductor is sequentially coated with a protective insulating layer, a split-phase fireproof insulating layer and a plastic insulating layer from inside to outside.
Further, the protective insulating layer is formed by overlapping and wrapping a polyester tape on a conductor; the split-phase fireproof insulating layer is formed by overlapping and wrapping ceramic mica tapes.
Further, the comprehensive waterproof layer comprises an insulating waterproof layer and a radial waterproof layer from inside to outside.
Further, the insulating waterproof layer is formed by overlapping wrapped insulating waterproof tapes, and the radial waterproof layer is formed by extruding polyethylene sheath materials.
Further, the comprehensive fireproof layer comprises a fireproof insulating layer, an inner heat-insulating protective layer, a metal reinforcing layer and an outer heat-insulating protective layer from inside to outside.
Furthermore, the fireproof insulating layer for the system package is formed by overlapping and wrapping a ceramic mica tape.
Further, the inner heat insulation protective layer and the outer heat insulation protective layer are formed by overlapping and wrapping glass fiber belts.
Furthermore, the metal reinforcing layer is formed by metal belt interlocking armor.
Further, the outer coating is formed by extruding and packing halogen-free low-smoke flame-retardant polyolefin sheath materials.
The beneficial effects of the utility model are as follows:
compared with the prior art, the high-performance flame-retardant fireproof waterproof power cable provided by the utility model has better flexibility, waterproof property, fireproof property, flame retardance and environmental protection.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural view of a high-performance flame-retardant fireproof waterproof power cable according to the present utility model.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
Referring to fig. 1, an example of the internal construction of the high performance flame retardant, fire resistant, waterproof power cable provided in this example is shown.
As can be seen from the figure, the high-performance flame-retardant fireproof waterproof power cable mainly comprises a cable core 300, a comprehensive waterproof layer 400 wrapped around the cable core 300, a comprehensive fireproof layer 500 and an outer coating layer 600.
Specifically, the present example preferably includes a comprehensive waterproof layer 400, a comprehensive fireproof layer 500, and an outer cover layer 600 coated around the cable core 300 in this order from inside to outside, thereby forming a high-performance flame-retardant, fireproof, and waterproof power cable.
In some embodiments, the cable core 300 in this example is comprised of a filler 200 and a number of insulated wire cores 100.
The insulated wire core 100 may have the same specification or different specifications, and when the insulated wire core is of different specifications, the small specification is 0.5 times or more of the large specification.
In this way, the plurality of insulated wire cores 100 are distributed and stranded along the same circumference, and the filler 200 is disposed in the area between the plurality of insulated wire cores 100 and is respectively in contact with each insulated wire core 100, so that the cable core 300 becomes round, and thus the cable cores 300 are formed in a matching manner.
In some embodiments, the insulated wire core 100 in this example includes a conductor 110, a protective insulating layer 120 covering the conductor 110, a split-phase fireproof insulating layer 130, and a plastic insulating layer 140.
Specifically, in this example, the periphery of the conductor 110 is sequentially coated with the protective insulating layer 120, the split-phase fireproof insulating layer 130 and the plastic insulating layer 140 from inside to outside, so as to form the corresponding insulating wire core 100.
In some embodiments, the conductor 110 in this example may be specifically a solid copper conductor 1 or a stranded copper conductor 2 or a soft copper conductor 5 or a soft copper conductor 6 or a tin-plated soft copper conductor 5 or a tin-plated soft copper conductor 6.
In some embodiments, the protective insulating layer 120 in this example is formed by overlapping a polyester tape on the wrapping conductor 110, and the protective insulating layer 120 has better insulating performance under normal use conditions.
Further, the protective insulating layer 120 can isolate moisture and oxygen in the plastic insulating layer 140 from contacting the conductor, thereby reducing the influence of moisture and oxygen on the conductor when the cable is energized and heated. The protective insulating layer 120 can also prevent the conductor 110 from loosening, when the cable is bent, the conductor 110 generates force on the protective insulating layer 120, so that the mechanical damage of the split-phase fireproof insulating layer 130 is buffered and lightened, when the cable burns, the polyester tape is burnt into carbon, a gap is formed between the conductor 110 and the split-phase fireproof insulating layer 130, the conductor is heated and expanded, and the force of the conductor 110 on the split-phase fireproof insulating layer 130 is lightened.
In some embodiments, the split-phase fire-resistant insulating layer 130 in this example is formed by overlapping and wrapping a ceramic mica tape around the protective insulating layer 120.
The ceramic mica tape has good electrical insulation performance, fire insulation and flame retardance, namely, the ceramic shell formed after combustion still has good insulation performance, and the ceramic shell has a stable and compact structure without air gaps and is not absorbed by moisture after long-term exposure in air, so that the cable can be ensured to have good insulation performance between conductors after combustion.
In some embodiments, the plastic insulation 140 in this example is constructed of an extrusion coated phase separation flame retardant insulation 130 with a crosslinked polyethylene insulation or polypropylene insulation.
For example, the extrusion mode can be a half extrusion mode or a vacuum extrusion mode, so that an air gap between the conductor 110 and the plastic insulating layer 140 is smaller, and the insulation performance of the split-phase fireproof insulating layer 130 is kept.
In some embodiments, the composite waterproof layer 400 in this example includes an insulating waterproof layer 410 and a radial waterproof layer 420 from inside to outside.
In some embodiments, the insulating water blocking layer 410 in this example is formed by overlapping and wrapping the insulating water blocking tape around the cable core 300.
The insulating water-blocking layer 410 thus formed has a certain insulating property, and the insulating water-blocking layer 410 can also prevent the cable core 300 from loosening, expanding rapidly when meeting water or moisture, and has radial and longitudinal water-blocking effects. Thus, when the radial waterproof layer 420 of the cable is damaged, the insulating waterproof layer 410 expands to block the damaged part, so that the moisture and humidity outside the cable can be effectively prevented from entering the cable, and the insulating performance of the cable is not reduced.
In some embodiments, the radial waterproof layer 420 in this example is formed by extruding a medium density polyethylene jacket material or a high density polyethylene jacket material over the insulating waterproof layer 410.
In the radial waterproof layer 420 formed by the method, the density polyethylene or high-density polyethylene-based isolation sleeve has good compactness, so that the water absorption capacity is very small when meeting water, and the radial waterproof layer 420 has good radial waterproof performance, thereby further improving the radial waterproof performance of the comprehensive waterproof layer 420.
In some embodiments, the composite fire protection layer 500 in this example includes, from inside to outside, a unified fire protection layer 510, an inner insulation protection layer 520, a metal reinforcement layer 530, and an outer insulation protection layer 540.
In some embodiments, the unified fire barrier 510 in this example is formed from a ceramic mica tape that is lapped over the radial waterproof layer 420.
The formed unified package fireproof insulation layer 510 has better electrical insulation performance, fire insulation and flame retardance based on the ceramic mica tape, so that the unified package fireproof insulation layer 510 becomes a ceramic hard shell after burning and still has better insulation performance, the ceramic hard shell is stable and compact in structure, has no air gap and is not absorbed by moisture after being exposed in the air for a long time, and accordingly, the cable can be ensured to have better insulation performance between a conductor and the metal reinforcing layer 530 after burning.
In some embodiments, the inner insulation shield 520 in this example is comprised of overlapping wrapped fiberglass tape.
The inner fire-isolating protective layer 520 formed by the method has small heat release quantity, has good fire-isolating and heat-insulating effects, can slow down the transmission of external heat to the unified package fireproof insulating layer 510 during combustion, can effectively protect the unified package fireproof insulating layer 510 from being damaged by the action of external force during production, can also buffer and alleviate the action of the external metal reinforcing layer 530 on the unified package fireproof insulating layer 510, and can effectively protect the unified package fireproof insulating layer 510 from being damaged.
In some embodiments, the metal reinforcement layer 530 in this example is formed by double metal tape interlocking armor over the inner insulation shield 520.
In the metal reinforcing layer 530 thus constituted, the metal strips of the double-layer metal strip interlocking armor structure are tightly bonded, stable in structure, good in flexibility, good in external mechanical resistance, and resistant to biting by animals, so that the radial waterproof layer 420 of the cable can be well protected from damage.
In some embodiments, the outer insulation layer 540 in this example is comprised of overlapping wrapped fiberglass tape.
The outer fire-barrier layer 540 thus formed has a small heat release and good fire-barrier and heat-insulating effects, which ensures that the temperature rise of the cable during combustion, from the external combustion heat transferred to the metal reinforcing layer, is within the melting point of the metal strip, thus ensuring that the metal reinforcing layer 530 is not melt-damaged.
In some embodiments, the outer coating 600 in this example is formed by extruding a halogen-free low smoke flame retardant polyolefin sheath material over the outer insulation layer 540.
The outer coating 600 thus formed has less heat release, better flame retardancy, better mechanical and physical properties, and better protection of the cable's metal reinforcement layer 530 from damage and corrosion.
The fire-proof wall of the cable can be formed by uniformly wrapping the fireproof insulating layer 510, the inner heat-insulating protective layer 520, the metal reinforcing layer 530 and the outer heat-insulating protective layer 540, and has good fire-proof, flame-retardant and mechanical protective effects.
In addition, since the metal reinforcing layer 530 is an interlocking armor and the outer surface is provided with a corrugated structure, the outer cover 600 is extruded in a tight package, and the outer surface of the cable is also provided with the corrugated structure, the structure can effectively prevent the outer cover 600 from shrinking to a certain extent when being exposed to high temperature weather and illumination, so that the outer cover 600 at the middle joint of the cable does not slip after running for a few years, and the performance of the middle joint can be effectively ensured to continuously meet the requirements.
In addition, because the plastic insulating layer 140 of the cable is plastic insulating, the radial waterproof layer 420 is a polyethylene sheath, the metal reinforcing layer 530 is an interlocking armor, so that the cable has better bending property, after the cable burns, the protective insulating layer 120, the plastic insulating layer 140 and the comprehensive waterproof layer 400 of the cable are burnt to form air gaps, the split-phase fireproof insulating layer 130 and the unified fireproof insulating layer 510 are sintered into ceramic sealing hard shells and have better insulating property, at the moment, the metal belt interlocking armor structure becomes a metal bracket of the cable, the structures of the split-phase fireproof insulating layer 130 and the unified fireproof insulating layer 510 can be effectively protected from being damaged, and the better insulating property between the conductors 110 of the cable and between the conductors 110 and the metal reinforcing layer 530 is always maintained. Meanwhile, the cable can still pass the fire resistance, impact resistance and fire resistance and water spraying test under S-shaped bending or U-shaped bending, so that the cable can still run safely and reliably after being burned, and the cable has better fire resistance.
In the high-performance flame-retardant fireproof waterproof power cable formed by the embodiment, the adopted protective insulating layer 120, the split-phase fireproof insulating layer 130, the plastic insulating layer 140, the filling 200, the insulating waterproof layer 410, the radial waterproof layer 420, the uniformly-wrapped fireproof insulating layer 510, the inner heat-insulating protective layer 520, the outer heat-insulating protective layer 540 and the outer coating 600 are made of halogen-free low-smoke nonmetallic materials, so that the high-performance flame-retardant fireproof waterproof power cable also has better environment-friendly performance.
In the high-performance flame-retardant fireproof waterproof power cable formed by the embodiment, the uniformly-wrapped fireproof insulation layer 510, the inner heat-insulating protection layer 520, the metal reinforcing layer 530, the outer heat-insulating protection layer 540 and the outer coating layer 600 are all made of flame-retardant materials, and the heat can be effectively accumulated on the metal belt due to the good heat conductivity of the metal belt and the heat insulation protection belt inside and outside the metal belt, so that the rise of the temperature of the cable core 300 and the external combustion environment is effectively slowed down, and the cable also has good flame retardant performance.
In the high-performance flame-retardant fireproof waterproof power cable formed by the embodiment, the plastic insulating layer 140, the radial waterproof layer 420 and the outer coating layer 600 are all extruded compact plastic sleeves, and the insulating waterproof layer 410 has radial and longitudinal waterproof effects, so that the cable also has good waterproof performance.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The high-performance flame-retardant fireproof waterproof power cable is characterized by comprising a cable core, wherein the periphery of the cable core is sequentially coated with a comprehensive waterproof layer, a comprehensive fireproof layer and an outer coating layer from inside to outside;
the cable core is composed of a plurality of insulating wire cores and filling wires, the insulating wire cores are distributed and stranded along the same circumference, and the filling wires are distributed in areas among the insulating wire cores and respectively contacted with the insulating wire cores, so that the cable core forms a round structure.
2. The high-performance flame-retardant fireproof waterproof power cable according to claim 1, wherein the insulated wire core comprises a conductor, and the periphery of the conductor is sequentially coated with a protective insulating layer, a split-phase fireproof insulating layer and a plastic insulating layer from inside to outside.
3. The high-performance flame-retardant fireproof waterproof power cable according to claim 2, wherein the protective insulating layer is formed by overlapping and wrapping a polyester tape on a conductor; the phase-splitting fireproof insulating layer is formed by overlapping and wrapping a ceramic mica tape outside the protective insulating layer, and the plastic insulating layer is formed by extruding and wrapping a cross-linked polyethylene insulating material or a polypropylene insulating material on the phase-splitting fireproof insulating layer.
4. The high-performance flame-retardant fireproof waterproof power cable according to claim 1, wherein the comprehensive waterproof layer comprises an insulating waterproof layer and a radial waterproof layer from inside to outside.
5. The high-performance flame-retardant fireproof waterproof power cable according to claim 4, wherein the insulating waterproof layer is formed by overlapping and wrapping an insulating waterproof tape which is overlapped and wrapped outside a cable core, and the radial waterproof layer is formed by extruding polyethylene sheath materials.
6. The high performance flame retardant, fire resistant, waterproof power cable of claim 1, wherein the composite flame retardant layer comprises, from inside to outside, a unified flame retardant insulation layer, an inner thermal insulation protective layer, a metal reinforcing layer, an outer thermal insulation protective layer.
7. The high performance flame retardant, fire resistant, water resistant power cable of claim 6, wherein the unified fire resistant insulation layer is formed by overlapping and wrapping a ceramic mica tape.
8. The high performance flame retardant, fire resistant, waterproof power cable of claim 6 wherein the inner and outer insulation shields are wrapped with overlapping fiberglass tapes.
9. The high performance flame retardant, fire resistant, waterproof power cable of claim 6, wherein the metal reinforcement layer is metal tape interlocked armor.
10. The high performance flame retardant, fire resistant, water resistant power cable of claim 1 wherein the outer jacket is extruded from a halogen free low smoke flame retardant polyolefin sheathing compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223396101.4U CN220121528U (en) | 2022-12-14 | 2022-12-14 | High-performance flame-retardant fireproof waterproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223396101.4U CN220121528U (en) | 2022-12-14 | 2022-12-14 | High-performance flame-retardant fireproof waterproof power cable |
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| Publication Number | Publication Date |
|---|---|
| CN220121528U true CN220121528U (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223396101.4U Active CN220121528U (en) | 2022-12-14 | 2022-12-14 | High-performance flame-retardant fireproof waterproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121528U (en) |
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2022
- 2022-12-14 CN CN202223396101.4U patent/CN220121528U/en active Active
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