CN220121533U - Composite insulating flame-retardant fireproof environment-friendly cable - Google Patents
Composite insulating flame-retardant fireproof environment-friendly cable Download PDFInfo
- Publication number
- CN220121533U CN220121533U CN202223396069.XU CN202223396069U CN220121533U CN 220121533 U CN220121533 U CN 220121533U CN 202223396069 U CN202223396069 U CN 202223396069U CN 220121533 U CN220121533 U CN 220121533U
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- Prior art keywords
- insulating
- cable
- fireproof
- layer
- flame
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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 29
- 239000003063 flame retardant Substances 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000011049 filling Methods 0.000 claims abstract description 20
- 239000011241 protective layer Substances 0.000 claims abstract description 11
- 239000011247 coating layer Substances 0.000 claims abstract description 8
- 239000004020 conductor Substances 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 15
- 239000010445 mica Substances 0.000 claims description 9
- 229910052618 mica group Inorganic materials 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 21
- 229910052628 phlogopite Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000002265 prevention Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a composite insulating flame-retardant fireproof environment-friendly cable, which comprises a cable core, wherein the periphery of the cable core is sequentially coated with a cooling water-blocking layer, a heat-insulating protective layer and an outer coating layer from inside to outside; the cable core comprises a filling frame and a plurality of insulating wire cores, wherein the insulating wire cores are circumferentially distributed and stranded, and the filling frame is filled in areas among the insulating wire cores and is respectively in contact with each insulating wire core. Compared with the prior art, the composite insulating flame-retardant fireproof environment-friendly cable provided by the utility model has better flexibility, fireproof performance, flame retardance and environment-friendly performance.
Description
Technical Field
The utility model relates to a power cable, in particular to a composite insulating flame-retardant fireproof environment-friendly cable.
Background
At present, a non-metal sheath low-voltage fireproof cable has a fireproof structure that fireproof mud is extruded outside a cable core, and the structure has the following defects:
1) The cable core adopts fire prevention mud as cable fire prevention cooling structure outward, after a period of time, fire prevention mud structure design hardens, cable bending performance is relatively poor, in case its outside temperature of conflagration is passed through mineral fire prevention mud and can release moisture and have better cooling effect after the cable uses, along with the progression of burning, fire prevention mud is sintered into the crust, this kind of crust structure has better fire blocking, fire isolation, oxygen isolation effect, but because fire prevention mud structure is the ring structure that is located cable core outward, the cable is when using to bend, receive great tension and easily make fire prevention mud structure crack in the bending outside, the cable burns, fire prevention mud structure is likely to produce the crackle because of the stress effect, the cable is sprayed water (like fire control water spray) in the burning, then water permeates into cable core inside through the crackle (cable after burning, moisture in the air slowly gets into cable core inside), again because the mica tape outside the conductor is relatively poor its leakproofness after the moisture infiltration or moisture gets into, the dielectric strength of its mica tape drops and leads to the puncture, finally, lead to fire resistance to failure.
2) The fire-proof mud structure is easy to cause large eccentricity and thick if the fire-proof mud structure is not shaped during production, and has unstable fire-proof property and poor cable bending property.
From the above description, it can be seen that the fire resistance of the composite insulated flame-retardant fireproof environment-friendly cable needs to be improved at present.
Disclosure of Invention
The utility model aims to solve the problems, and provides a composite insulating flame-retardant fireproof environment-friendly cable.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the cable comprises a cable core, wherein the periphery of the cable core is sequentially coated with a cooling water-blocking layer, a heat-insulating protective layer and an outer coating layer from inside to outside;
the cable core comprises a filling frame and a plurality of insulating wire cores, wherein the insulating wire cores are circumferentially distributed and stranded, and the filling frame is filled in areas among the insulating wire cores and is respectively in contact with each insulating wire core.
In a preferred embodiment of the utility model, the filling frame is a halogen-free low-smoke elastic polygonal filling strip, the number of sides of the polygonal filling strip is the same as that of the insulated wire cores, and the sides of the polygon are in tangential contact with the insulated wire cores.
In a preferred embodiment of the utility model, the insulated wire core comprises a conductor, and the periphery of the conductor is sequentially coated with a fireproof insulating layer and a plastic insulating layer from inside to outside.
In a preferred embodiment of the utility model, the fire-resistant insulating layer is a ceramic mica tape laminated around the wrapped conductor.
In a preferred embodiment of the present utility model, the ceramic mica tape comprises a ceramic phlogopite paper layer, a glass cloth layer and an adhesive layer, wherein the glass cloth layer is fixed on the ceramic phlogopite paper layer through the adhesive layer.
In a preferred embodiment of the utility model, the plastic insulation may be formed by extrusion of a crosslinked polyethylene insulation or a polypropylene insulation over the fire-resistant insulation.
In a preferred embodiment of the present utility model, the cooling water-blocking layer is formed by extruding and wrapping fireproof mud on the cable core, and the fireproof mud is filled in a side gap between the insulated cable cores and is not adhered to the insulated cable cores.
In a preferred embodiment of the utility model, the thermal insulation protection layer is composed of an overlapped and wrapped thermal insulation protection belt.
In a preferred embodiment of the present utility model, the heat-insulating protective tape may be one or two of a fiberglass tape, a highly flame retardant tape, and a mica tape.
In a preferred embodiment of the utility model, the outer coating is formed by extrusion of a halogen-free low smoke polyolefin flame retardant sheath material over the insulation shield.
The beneficial effects of the utility model are as follows:
compared with the prior art, the composite insulating flame-retardant fireproof environment-friendly cable provided by the utility model has better flexibility, fireproof performance, flame retardance and environment-friendly performance.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a composite insulated flame-retardant fireproof environment-friendly cable provided by the 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 structure of the composite insulated flame-retardant fireproof environment-friendly cable provided by the utility model is shown.
As can be seen from the figure, the composite insulated flame-retardant fireproof environment-friendly cable mainly comprises a cable core 300, a cooling water-blocking layer 400, a heat-insulating protective layer 500 and an outer coating layer 600, wherein the cooling water-blocking layer 400, the heat-insulating protective layer 500 and the outer coating layer 600 are wrapped on the cable core 300.
Specifically, the outer periphery of the cable core 300 is preferably coated with the cooling water blocking layer 400, the heat insulation protection layer 500 and the outer coating layer 600 from inside to outside in sequence, so that the composite insulating flame-retardant fireproof environment-friendly cable is formed.
In some embodiments, the cable core 300 in this example is composed of a filler rack 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 insulation cores 100 are distributed and twisted along the same circumference, and the filling frame 200 is disposed in an area between the plurality of insulation cores 100, i.e., a central position of the cable core 300, and is respectively in contact with each insulation core 100, thereby cooperatively forming the corresponding cable core 300.
In some embodiments, the filling frame 200 in this example is preferably a polygonal filling bar, the number of sides of the polygonal filling bar is equal to the number of the insulated wire cores, and the sides of the polygon are in tangential contact with the insulated wire cores.
Further, the filling frame 200 in this example is extruded from a halogen-free low-smoke elastomer material, so that the filling frame has elasticity, can relieve the action of the force between the insulated wire cores 100, and has a fixing effect on the positions of the insulated wire cores 100, and can not be loosened and the structure is stable under the condition that the cable core is not fastened by a protective belt.
In some embodiments, the insulated wire core 100 in this example includes a conductor 110, and a fireproof insulating layer 120 and a plastic insulating layer 130 that cover the conductor 110.
Specifically, in this example, the periphery of the conductor 110 is sequentially coated with a fireproof insulating layer 120 and a plastic insulating layer 130 from inside to outside, so as to form a 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 fireproof insulation layer 120 in this example is formed by overlapping a ceramic mica tape on the wrapped conductor 110, and the fireproof insulation layer 120 still has better insulation performance after burning, which is used for improving the fireproof insulation performance of the conductor.
Specifically, the ceramic mica tape comprises a ceramic phlogopite paper layer, a glass cloth layer and an adhesive layer, wherein the glass cloth layer is fixed on the ceramic phlogopite paper layer through the adhesive layer. Wherein, the glass cloth layer is used for improving the intensity of the ceramic phlogopite paper layer, the bonding layer is convenient for fixing the glass cloth layer and the ceramic phlogopite paper layer, and the bonding layer is specifically high temperature resistant organic silica gel adhesive.
Furthermore, the ceramic phlogopite paper layer is formed by uniformly spraying ceramic powder on the phlogopite paper, namely, the ceramic phlogopite paper layer is formed by matching the phlogopite paper with the ceramic powder layer distributed on the phlogopite paper.
The fireproof insulating layer 120 formed by the structure can ensure that the ceramic-shaped hard shell formed by burning still has good insulating performance, the ceramic-shaped hard shell has stable and compact structure without air gaps, has good moisture and water blocking effects, and the cable can still be safely and reliably electrified to operate even though the insulating layer 130 of the cable is burnt out, but the fireproof insulating layer 120 still has good insulating performance.
In some embodiments, the plastic insulating layer 130 in this example is formed by extruding a crosslinked polyethylene insulating material or a polypropylene insulating material over the fire-resistant insulating layer 120. The plastic insulating layer 130 is a plastic sleeve with good waterproof performance and good insulating performance in normal use.
In some embodiments, the cooling water barrier 400 in this example is formed by extrusion coating of fire clay onto the cable core 300. The fireproof mud is filled into the side gaps between the insulated wire cores and is not adhered to the insulated wire cores, and the inner surface of the fireproof mud is of an embedded structure, so that the fireproof mud is stable in structure and small in deformation; based on the cooling water-blocking layer 400 formed by the fire-proof mud with the structure, the cooling water-blocking layer 400 also mainly comprises a round filling part of the cable core 300, and the thickness outside the cable core 300 is very thin, when the cable is bent, the insulation core 100 and the cooling water-blocking layer 400 of the cable are mainly stressed wholly, and the cooling water-blocking layer 400 is not hardened wholly and the bending performance of the cable is not affected.
Further, the fireproof mud in the embodiment is formed by mixing liquid sodium silicate with inorganic mineral powder, the inorganic mineral powder can be one or two of magnesium hydroxide and aluminum hydroxide, the structure can separate out water when the cable burns, the structure has obvious effect on cooling the cable core, the main component of the structure is inorganic mineral, the structure becomes a hard shell after burning, the fireproof insulating layer 120 can be effectively protected from being damaged by external force, and the structure has better effects of flame retardance, heat insulation, fire resistance and water blocking,
in some embodiments, the insulation shield 500 in this example is comprised of overlapping wrapped insulation strips.
The heat-insulating protective belt can be one or two of a glass fiber belt, a high flame-retardant belt and a mica tape.
The heat insulation protection layer 500 formed in this way can slow down the transmission of external heat to the cooling water-blocking layer 400 when burning, can effectively ensure that the cooling water-blocking layer 400 crust forms and protect the cooling water-blocking layer 400 from being destroyed.
In some embodiments, the outer coating 600 in this example is the outermost protective layer of the cable, which is tightly extruded onto the insulation protective layer 500 using a halogen-free low smoke flame retardant polyolefin sheathing compound.
In the composite insulating flame-retardant fireproof environment-friendly cable formed by the embodiment, the adopted fireproof insulating layer 120, the plastic insulating layer 130, the filling frame 200, the cooling water-blocking layer 400, the heat-insulating protective layer 500 and the non-metal materials used for the outer coating layer 600 are halogen-free low-smoke materials, so that the composite insulating flame-retardant fireproof environment-friendly cable has better environment-friendly performance.
In the composite insulating flame-retardant fireproof environment-friendly cable formed by the embodiment, the adopted cooling water-blocking layer 400, the heat-insulating protective layer 500 and the outer coating layer 600 are all made of flame-retardant materials, so that the cable also has good flame-retardant performance.
In the composite insulating flame-retardant fireproof environment-friendly cable formed by the embodiment, the periphery of the insulating wire core 100 of the cable core 300 is not filled with the filler, but the cooling water-blocking layer 400 is adopted, so that the effects of cooling and water blocking are fully exerted, and the outer diameter of the cable and the weight of the cable are effectively reduced.
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 (6)
1. The composite insulating flame-retardant fireproof environment-friendly cable is characterized by comprising a cable core, wherein the periphery of the cable core is sequentially coated with a cooling water-blocking layer, a heat-insulating protective layer and an outer coating layer from inside to outside;
the cable core comprises a filling frame and a plurality of insulating wire cores, wherein the insulating wire cores are distributed and stranded along the same circumference, and the filling frame is filled in the area between the insulating wire cores and is respectively contacted with each insulating wire core to form a corresponding cable core in a matched manner;
the cooling water blocking layer is formed by extruding fireproof mud on the cable core, the fireproof mud is filled into a side gap between the insulating cable cores and is not adhered to the insulating cable cores, and the inner surface of the fireproof mud is of an embedded structure.
2. The composite insulating flame-retardant fireproof environment-friendly cable according to claim 1, wherein the filling frame is a halogen-free low-smoke elastomer polygonal filling strip, the number of sides of the polygonal filling strip is the same as the number of the insulating wire cores, and the sides of the polygon are in tangential contact with the insulating wire cores.
3. The composite insulated flame-retardant fireproof environment-friendly cable according to claim 1, wherein the insulated wire core comprises a conductor, and the periphery of the conductor is sequentially coated with a fireproof insulating layer and a plastic insulating layer from inside to outside.
4. The composite insulating flame-retardant fireproof environment-friendly cable according to claim 3, wherein the fireproof insulating layer is formed by overlapping and wrapping a ceramic mica tape on a conductor.
5. The composite insulated flame-retardant and fireproof environment-friendly cable according to claim 1, wherein the heat-insulating protective layer is formed by overlapping wrapped heat-insulating protective strips.
6. The composite insulating flame-retardant fireproof environment-friendly cable according to claim 1, wherein the outer coating is formed by tightly wrapping and extruding a halogen-free low-smoke polyolefin flame-retardant sheath material on the heat-insulating protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223396069.XU CN220121533U (en) | 2022-12-14 | 2022-12-14 | Composite insulating flame-retardant fireproof environment-friendly cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223396069.XU CN220121533U (en) | 2022-12-14 | 2022-12-14 | Composite insulating flame-retardant fireproof environment-friendly cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220121533U true CN220121533U (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223396069.XU Active CN220121533U (en) | 2022-12-14 | 2022-12-14 | Composite insulating flame-retardant fireproof environment-friendly cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121533U (en) |
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2022
- 2022-12-14 CN CN202223396069.XU patent/CN220121533U/en active Active
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