CN222260600U - A long-life flame-retardant cable - Google Patents
A long-life flame-retardant cable Download PDFInfo
- Publication number
- CN222260600U CN222260600U CN202421047207.XU CN202421047207U CN222260600U CN 222260600 U CN222260600 U CN 222260600U CN 202421047207 U CN202421047207 U CN 202421047207U CN 222260600 U CN222260600 U CN 222260600U
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- China
- Prior art keywords
- layer
- flame
- conductive
- flame retardant
- retardant cable
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 42
- 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 32
- 239000004020 conductor Substances 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 98
- 239000011241 protective layer Substances 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 12
- 229920000098 polyolefin Polymers 0.000 claims description 8
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 claims 2
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 6
- 229920002379 silicone rubber Polymers 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 241000283984 Rodentia Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000017105 transposition 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model belongs to the field of cables for buildings, and provides a long-life flame-retardant cable which comprises four conductive units and a wire core, wherein the four conductive units are positioned on four corners of the wire core and surround the wire core, the four conductive units and the wire core are nested in a compressed layer, the center of each conductive unit is a conductive layer, the conductive layer adopts a compressed special-shaped structure conductor, and the shape of the conductor is a tile rounding structure and a fan rounding structure. The conductive layer of the utility model adopts a compressed fan shape or a compressed tile shape, so that products are mutually complemented to form a round shape when being stranded, and organic combustion matters of the products are reduced.
Description
Technical Field
The utility model belongs to the field of cables for buildings, and particularly relates to a flame-retardant cable with long service life.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
And the wire and cable is used for transmitting electric energy or magnetic energy or realizing products of electromagnetic energy conversion.
With the development of modern science and technology and the improvement of living standard of people and the increasingly complicated and high-flexibility requirements of industrial and commercial building structures, people continuously pay more attention to the safety and environmental protection of various wire and cable products for comprehensive wiring.
The inventor finds that the low-smoke halogen-free flame-retardant cable is mainly a round conductor and is insulated in a single layer, and the lining mode is mostly a single-layer wrapping mode, and no wrapping layer exists after armor. The common flame retardance of the structure can meet the requirements of B1 and long service life, but the B1 grade is more and more strict along with the requirements of long service life in places such as nuclear power stations, urban rails, subways, hospitals and high-rise buildings.
Disclosure of utility model
In order to solve the problems, the utility model provides a flame-retardant cable with long service life, and the conductive layer adopts a compressed fan shape or a compressed tile shape, so that products are mutually complemented to form a round shape when being stranded, and organic combustibles of the products are reduced.
According to some embodiments, the utility model provides a long-life flame-retardant cable, which adopts the following technical scheme:
The long-life flame-retardant cable comprises four conductive units and a wire core, wherein the four conductive units are positioned at four corners of the wire core and surround the wire core, and the four conductive units and the wire core are nested in a compressed layer;
The center of the conductive unit is a conductive layer, the conductive layer adopts a tightly pressed special-shaped structure conductor, and the shape of the conductor is a tile rounding structure and a fan rounding structure.
Further, the conducting layer is provided with a fireproof layer, and the fireproof layer is formed by wrapping a positive and negative stranded mica tape.
Further, an insulating layer is arranged outside the fireproof layer, and the insulating layer adopts a heterogeneous material double-layer co-extrusion structure.
Furthermore, the compacting layer is formed by compacting a low-smoke halogen-free flame retardant belt, and the center and the side gaps are filled by high-flame retardant inorganic paper ropes.
Further, a first protective layer and a second protective layer are sequentially arranged outside the compacting layer.
Further, a metal layer is arranged outside the second protection layer, and the metal layer is armored by a metal belt.
Further, a first protective layer and a second protective layer are sequentially arranged outside the metal layer;
the first protective layer is formed by wrapping high-flame-retardant wrapping tape.
Further, the second protective layer is made of irradiation crosslinked polyolefin material and extruded.
Further, the conductor is 90 DEG to 100 DEG W-shaped or 90 DEG to 180 DEG fan-shaped.
Further, the fireproof layer is of a double-layer structure.
Compared with the prior art, the utility model has the beneficial effects that:
The conductive layer of the utility model adopts a compressed fan shape or a compressed tile shape, so that products are mutually complemented to form a round shape when being stranded, and organic combustion matters of the products are reduced. The cable fire-proof layer adopts positive and negative transposition, makes between the fire-proof layer more compact and, less overlap layer because of the syntropy produces.
The cable insulating layer is made of heterogeneous material double-layer co-extrusion materials, so that the electrical performance, mechanical performance and low smoke zero halogen flame retardant property of the product are more excellent, the product inner insulation has excellent insulating property, the outer insulation has excellent low smoke zero halogen flame retardant property, and after the product is crosslinked through an electron accelerator, the linear structure of the insulated molecular structure product is formed into a net structure, so that the service life of the product is greatly prolonged to 80 years. The structure strengthens the electrical insulation performance of the cable, simultaneously ensures that the cable insulation layer has good flame retardant property, and the low-smoke halogen-free material can not release toxic gas when being burnt, thereby improving the survival rate of trapped personnel in a fire scene.
The cable conductive layer is formed by wrapping the compacting layer with the low-smoke halogen-free flame retardant tape after adopting the special-shaped structure, so that a layer of protection is added outside the insulated wire core. The cable metal layer can adopt various structures, and can be replaced according to actual use environments, such as copper strips, copper wires, steel strips, steel wires and the like. The metal layer mainly considers that the product is subjected to external stress such as dragging, smashing and the like to protect the inner wire core when a fire disaster occurs.
The cable protection layer is of a two-layer structure, the first layer structure mainly aims at isolating heat from the metal layer and damaging the protection capability of the metal layer when a fire disaster occurs, the second protection layer mainly aims at improving the low-smoke halogen-free flame retardant effect of the cable, and the molecular structure of the product is changed after the product is irradiated. The service life is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a block diagram of a long life flame retardant cable of the present utility model;
In the figure:
1. The metal layer comprises a conductive layer, a fireproof layer, an inner insulating layer, an outer insulating layer, a compacting layer, a first protective layer, a second protective layer, a metal layer, a first protective layer and a second protective layer.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present utility model, terms such as "fixedly attached," "connected," "coupled," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection, or both, as well as directly or indirectly via an intermediary. The specific meaning of the terms in the present utility model can be determined according to circumstances by a person skilled in the relevant art or the art, and is not to be construed as limiting the present utility model.
Example 1
As shown in fig. 1, the present embodiment provides a long-life flame-retardant cable, which comprises four conductive units and a wire core, wherein the four conductive units are positioned at four corners of the wire core and surround the wire core, and the four conductive units and the wire core are nested in a compressed layer;
the center of the conductive unit is a conductive layer 1, the conductive layer adopts a tightly pressed special-shaped structure conductor, and the shape of the conductor is a tile rounding structure and a fan rounding structure.
The fireproof layer 2 is arranged outside the conductive layer, the fireproof layer is formed by wrapping a positive and negative stranded mica tape, and the overlapping of the mica tape is more than 50%.
An insulating layer is arranged outside the fireproof layer 2, the insulating layer adopts a heterogeneous material double-layer co-extrusion structure, the inner insulating layer 3 adopts high flame-retardant crosslinked polyethylene, and the outer insulating layer 4 adopts low-smoke halogen-free flame-retardant crosslinked polyolefin. The insulation ratio of the inside to the outside is 1:3, and the electric insulation layer needs to be subjected to an irradiation crosslinking process. After the product is crosslinked by the electron accelerator, the linear structure of the insulated molecular structure product is formed into a net structure.
The compacting layer 5 is formed by compacting a low-smoke halogen-free flame retardant belt, and the center and the side gaps are filled with high flame retardant inorganic paper ropes.
The first protective layer 6 and the second protective layer 7 are sequentially arranged outside the compacting layer.
The first protective layer is made of ceramic silicon rubber, the ceramic silicon rubber has the characteristics of excellent fire resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, residues after combustion are hard ceramic shells, the hard shells are not melted and drop-off in a fire environment, and the line integrity test of the ceramic shell can be carried out by passing through GB/T19216.21-2003 under the condition that the temperature is 950-1000 ℃ and the ceramic shell is subjected to fire for 90min and is cooled for 15 min. The ceramic silicon rubber product has no special requirement on equipment, the processing technology is simple, the production can be realized by adopting the traditional silicon rubber processing equipment, and compared with the current refractory wire and cable production technology, the ceramic silicon rubber product has higher production efficiency, can reduce the production energy consumption and save the cost.
The second protective layer is an oxygen-isolating layer, and adopts ceramic polyolefin, and the ceramic polyolefin can rapidly generate a complete ceramic shell under the temperature or flame condition of more than 650 ℃, the bending strength can reach 10MPa, the dielectric strength is more than 20kV/mm, and the volume resistivity is more than 5 multiplied by 1013 ohm cm. The generated ceramic shell is not cracked and dripped, has excellent electric isolation performance and excellent oxygen and heat insulation effect, can effectively isolate the damage of high-temperature flame to the inside of a circuit, delay the decomposition of internal materials, avoid the fusing of conductors in the flame, and ensure the smoothness of the circuit under the condition of fire. The material is formed in one step by adopting common polyolefin cable material processing equipment, has simple process and can be continuously produced.
The second protection layer is provided with a metal layer 8, the metal layer adopts metal tape armor, and the metal tape has the characteristics of collision prevention, high protection and the like.
The metal layer is externally provided with a first protective layer 9 and a second protective layer 10 in sequence, the first protective layer is formed by wrapping a high flame-retardant wrapping tape, and the second protective layer is made of irradiation cross-linked polyolefin material and extruded.
The cable adopts double-deck inoxidizing coating, and first layer adopts 2 layers of high fire-retardant band to wrap up and forms, and the second layer adopts the irradiation cross-linked polyolefin material, and the product has flame retardant efficiency good, and the plasticity is high, and extrusion mode adopts extrusion formula to extrude. The first protective layer protects the isolation effect of the metal layer and the outermost protective layer.
The first layer structure is mainly used for isolating heat from the metal layer when a fire disaster occurs, the protection capability of the metal layer is destroyed, and the second protective layer is mainly used for improving the low-smoke halogen-free flame retardant effect of the cable. The service life is prolonged. The 2 nd layer inoxidizing coating adopts protection against rodents, prevents ant, anti ultraviolet material, even the comparatively abominable product of product environment still can use, can not release poison gas at the burning, and is more environmental protection, and life is longer.
The main implementation measures are as follows:
The product conducting layer 1 is coated with two fire-proof layers 2 in a forward and reverse mode through a coating machine, then a special extruder is used for extruding a double-layer heterogeneous insulating layer, then a ground nano electron accelerator is used for irradiation crosslinking, the insulating layer is provided with a compacting layer 5 through a cabling device, then two protective layers are extruded through an extrusion molding device respectively, then a metal layer 8 is completed through an armor device or a braiding device, then the metal layer returns to a first protective layer 9 of the cabling device for coating, and finally a second protective layer 10 is extruded through the extrusion molding device and then the ground nano electron accelerator is used for irradiation crosslinking. Finally, the cable is formed.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.
Claims (10)
1. The long-life flame-retardant cable is characterized by comprising four conductive units and a wire core, wherein the four conductive units are positioned at four corners of the wire core and surround the wire core, and the four conductive units and the wire core are nested in a compressed layer;
The center of the conductive unit is a conductive layer, the conductive layer adopts a tightly pressed special-shaped structure conductor, and the shape of the conductor is a tile rounding structure and a fan rounding structure.
2. The long-life flame-retardant cable of claim 1, wherein a flame-retardant layer is arranged outside the conductive layer, and the flame-retardant layer is formed by wrapping a positively and negatively stranded mica tape.
3. The long life flame retardant cable of claim 2, wherein said fire resistant layer is provided with an insulating layer, said insulating layer being of a heterogeneous material double layer co-extruded construction.
4. The long life flame retardant cable of claim 1 wherein said compression layer is formed by compression of a low smoke halogen free flame retardant tape and the center and side gaps are filled with high flame retardant inorganic paper rope.
5. The long life flame retardant cable of claim 1, wherein said compression layer is provided with a first protective layer and a second protective layer in sequence.
6. The long life flame retardant cable of claim 5, wherein said second protective layer is externally provided with a metal layer, said metal layer being metal tape armored.
7. The long-life flame-retardant cable of claim 6, wherein a first protective layer and a second protective layer are sequentially arranged outside the metal layer;
the first protective layer is formed by wrapping high-flame-retardant wrapping tape.
8. The long life flame retardant cable of claim 7 wherein said second protective layer is extruded from an irradiated cross-linked polyolefin material.
9. A long life flame retardant cable according to claim 1 wherein said conductor is in the form of a 90 ° to 100 ° watt or a 90 ° to 180 ° sector.
10. A long life flame retardant cable according to claim 2 wherein said flame retardant layer is of a double layer construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421047207.XU CN222260600U (en) | 2024-05-14 | 2024-05-14 | A long-life flame-retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421047207.XU CN222260600U (en) | 2024-05-14 | 2024-05-14 | A long-life flame-retardant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222260600U true CN222260600U (en) | 2024-12-27 |
Family
ID=93997899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421047207.XU Active CN222260600U (en) | 2024-05-14 | 2024-05-14 | A long-life flame-retardant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222260600U (en) |
-
2024
- 2024-05-14 CN CN202421047207.XU patent/CN222260600U/en active Active
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