CN219418566U - Flame-retardant structure of cable - Google Patents
Flame-retardant structure of cable Download PDFInfo
- Publication number
- CN219418566U CN219418566U CN202320208693.8U CN202320208693U CN219418566U CN 219418566 U CN219418566 U CN 219418566U CN 202320208693 U CN202320208693 U CN 202320208693U CN 219418566 U CN219418566 U CN 219418566U
- Authority
- CN
- China
- Prior art keywords
- layer
- retardant
- flame
- sheath
- polyurethane
- 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
- 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 group 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 93
- 239000003063 flame retardant Substances 0.000 claims abstract description 106
- 229920002635 polyurethane Polymers 0.000 claims abstract description 41
- 239000004814 polyurethane Substances 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- 239000011888 foil Substances 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 239000005030 aluminium foil Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 92
- 238000009941 weaving Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 230000007480 spreading Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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 discloses a flame-retardant structure of a cable, which comprises a polyurethane outer sheath, wherein an outer flame-retardant layer is arranged on the inner side of the polyurethane outer sheath, an outer aluminum foil wrapping layer is arranged on the inner side of the outer flame-retardant layer, an inner flame-retardant filling layer is arranged on the inner side of the outer aluminum foil wrapping layer, and high-polymer flame-retardant particles are arranged on the inner side of the inner flame-retardant filling layer. According to the structure, the outer flame-retardant layer is additionally arranged in the polyurethane outer sheath at the outer side of the cable, the inner flame-retardant filling layer with the high-molecular flame-retardant particles is additionally arranged at the inner side of the cable, the flame-retardant effect of the section of the cable can be further reduced, meanwhile, the flame-retardant sheath is additionally arranged at the outer side of the cable core, the first flame-retardant layer and the second flame-retardant layer are alternately arranged between the first polyurethane sheath layer and the second polyurethane sheath layer of the flame-retardant sheath, and the high-efficiency direct flame-retardant protection can be carried out after the high temperature is generated in the short circuit of the cable core, so that the economic loss caused by the short circuit fault of the cable is effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of insulated cables, and particularly relates to a flame retardant structure of a cable.
Background
The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and electric power or information is transmitted from one place to another place through the wires, and flame retardance of the cable mainly prevents fire from spreading along the cable after the cable is short-circuited.
The patent publication No. CN202120773767.3, which is searched by Chinese patent network, is a high-temperature resistant insulated cable with a flame retardant structure, and the content of the cable generally comprises an inner shell, wherein an inner cavity of the inner shell is provided with an assembly cavity through a interlayer, a cable core is fixedly assembled in the assembly cavity through a connecting rod, and a heat conducting block is assembled in the assembly cavity. At present, the flame-retardant structure of the cable in the prior art is relatively single, and most of the cable adopts a multi-wire core structure, while the prior art is provided with a flame-retardant layer at the center of the outer shell, but short circuit is caused by a wire core part, gradually diffuses to the periphery of the section and finally spreads along the cable, so that the flame-retardant effect is not ideal in the actual use process, and technical improvement is needed.
Disclosure of Invention
In view of the problems mentioned in the background art, it is an object of the present utility model to provide a flame retardant structure for cables to solve the problems mentioned in the background art above.
The technical aim of the utility model is realized by the following technical scheme:
the utility model provides a fire-retardant structure of cable, includes the polyurethane oversheath, the inboard of polyurethane oversheath is equipped with outer fire-retardant layer, the inboard of outer fire-retardant layer is equipped with outer aluminium foil around the covering, the inboard of outer aluminium foil around the covering is equipped with interior fire-retardant filling layer, the inboard of interior fire-retardant filling layer is equipped with the fire-retardant granule of polymer, the inboard of interior fire-retardant filling layer is equipped with interior aluminium foil around the covering, the inboard of interior aluminium foil around the covering is equipped with fire-retardant sheath, the inboard of fire-retardant sheath is equipped with the sinle silk.
Further, as the preferable technical scheme, a shielding weaving layer is arranged between the outer flame retardant layer and the outer aluminum foil wrapping layer, and the shielding weaving layer is formed by weaving 5 strands of copper wire warps and 5 strands of copper wire wefts.
Further, as a preferable technical scheme, a polyvinyl chloride wrapping layer is arranged between the inner combustion filling layer and the outer aluminum foil wrapping layer.
Further, as a preferable technical scheme, the inner side of the inner fire resistant filling layer is provided with 4 inner aluminum foil wrapping layers in equal angles.
Further, as a preferable technical scheme, the flame-retardant sheath comprises a first polyurethane sheath layer and a second polyurethane sheath layer, a first flame-retardant layer is arranged between the first polyurethane sheath layer and the second polyurethane sheath layer, and a second flame-retardant layer is arranged on the inner side of the second polyurethane sheath layer.
Further, as a preferable technical scheme, a talcum powder layer is arranged on the inner side of the second flame retardant layer.
Further, as a preferable technical scheme, a heat-resistant layer is arranged between the polyurethane outer sheath and the outer flame-retardant layer, and the heat-resistant layer is specifically made of a nitrogen-Lao-boron fiber material.
In summary, the utility model has the following advantages:
through add outer flame retardant coating in the polyurethane oversheath in the cable outside to add the internal combustion filling layer that has the fire-retardant granule of polymer in the cable inboard, can further reduce the fire-retardant effect of cable cross-section, add fire-retardant sheath in the outside of sinle silk simultaneously, and crisscross first fire-retardant layer and the fire-retardant layer of second between the first polyurethane restrictive coating and the second polyurethane restrictive coating of fire-retardant sheath, can carry out the direct fire-retardant protection of high efficiency after the line core short circuit produces high temperature, effectively reduce the economic loss that the cable short circuit trouble caused.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a flame retardant jacket of the present utility model;
fig. 3 is an enlarged view of fig. 1 a of the present utility model.
Reference numerals: 1. polyurethane oversheath, 2, outer flame retardant coating, 3, shielding weaving layer, 4, outer aluminum foil wrapping layer, 5, inner aluminum foil wrapping layer, 6, flame retardant sheath, 601, first polyurethane sheath layer, 602, first flame retardant layer, 603, second polyurethane sheath layer, 604, second flame retardant layer, 7, wire core, 8, talcum powder layer, 9, polyvinyl chloride wrapping layer, 10, inner flame retardant filling layer, 11, macromolecule flame retardant particles, 12 and heat resistant layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-3, a flame retardant structure of a cable according to the present embodiment includes a polyurethane outer sheath 1, an outer flame retardant layer 2 is disposed on the inner side of the polyurethane outer sheath 1, an outer aluminum foil wrapping layer 4 is disposed on the inner side of the outer flame retardant layer 2, an inner flame retardant filling layer 10 is disposed on the inner side of the outer aluminum foil wrapping layer 4, high polymer flame retardant particles 11 are disposed on the inner side of the inner flame retardant filling layer 10, an inner aluminum foil wrapping layer 5 is disposed on the inner side of the inner flame retardant filling layer 10, a flame retardant sheath 6 is disposed on the inner side of the inner aluminum foil wrapping layer 5, and a wire core 7 is disposed on the inner side of the flame retardant sheath 6; the inner side of the inner flame-retardant filling layer 10 is provided with 4 inner aluminum foil wrapping layers 5 at equal angles, and 4 inner aluminum foil wrapping layers 5 are additionally arranged at equal angles on the inner side of the inner flame-retardant filling layer 10, so that 4 cable cores 7 can be protected conveniently; the heat-resistant layer 12 is arranged between the polyurethane outer sheath 1 and the outer flame-retardant layer 2, the heat-resistant layer 12 is specifically made of a nitrogen-and-boron fiber material, and the heat-resistant layer 12 is additionally arranged between the polyurethane outer sheath 1 and the outer flame-retardant layer 2, so that after a fire condition occurs outside the cable, the combustion can be prevented from spreading from outside to inside on the section of the cable, and the flame-retardant reliability of the cable is further improved.
Example 2
Referring to fig. 1, in order to achieve the purpose of improving the anti-interference capability of the cable, a shielding braid 3 is arranged between the outer flame retardant layer 2 and the outer aluminum foil wrapping layer 4, the shielding braid 3 is formed by weaving 5 strands of copper wire warps and 5 strands of copper wire wefts, and the shielding braid 3 is additionally arranged between the outer flame retardant layer 2 and the outer aluminum foil wrapping layer 4, so that the inner wire core 7 of the cable can be prevented from being interfered.
Referring to fig. 3, for the purpose of achieving this, a polyvinyl chloride wrapping 9 is provided between the inner fire-retardant filler layer 10 and the outer aluminum foil wrapping, and the inner fire-retardant filler layer 10 can be reinforced after being wrapped with a tensile effect by adding the polyvinyl chloride wrapping 9 between the inner fire-retardant filler layer 10 and the outer aluminum foil wrapping.
Example 3
Referring to fig. 1-2, in this embodiment, based on embodiment 1, in order to achieve the purpose of improving the flame retardant effect of the cable, the flame retardant sheath 6 is innovatively designed in this embodiment, specifically, the flame retardant sheath 6 includes a first polyurethane sheath layer 601 and a second polyurethane sheath layer 603, a first flame retardant layer 602 is disposed between the first polyurethane sheath layer 601 and the second polyurethane sheath layer 603, a second flame retardant layer 604 is disposed on the inner side of the second polyurethane sheath layer 603, and by adding the flame retardant sheath 6 on the outer side of the wire core 7, the first flame retardant layer 602 and the second flame retardant layer 604 are added between the first polyurethane sheath layer 601 and the second polyurethane sheath layer 603 of the flame retardant sheath 6 in a staggered manner, so that high-efficiency and direct flame retardant protection can be performed after the wire core 7 is shorted to generate high temperature.
Referring to fig. 2, in order to achieve the purpose of improving the service life of the second flame retardant layer 604, the inner side of the second flame retardant layer 604 of this embodiment is provided with the talcum powder layer 8, and by adding the talcum powder layer 8 to the inner side of the second flame retardant layer 604, friction collision between the wire core 7 and the second flame retardant layer 604 can be reduced, and the service life is improved.
The use principle and the advantages are that: when the flame-retardant cable is used, the flame-retardant effect of the outer periphery of the cable section can be improved by additionally arranging the polyurethane outer sheath 1 with the outer flame-retardant layer 2 on the outer periphery of the cable section, the flame-retardant filling layer 10 with the high-molecular flame-retardant particles 11 is additionally arranged on the inner side of the cable, the flame-retardant effect of the cable section can be further reduced, the flame-retardant effect of the cable can be improved by additionally arranging the flame-retardant sheath 6 on the outer side of the cable core 7, and the first flame-retardant layer 602 and the second flame-retardant layer 604 are alternately arranged between the first polyurethane sheath layer 601 and the second polyurethane sheath layer 603 of the flame-retardant sheath 6, so that high-efficiency and direct flame-retardant protection can be performed after the short circuit of the wire core 7 is generated, and the shielding braid layer 3 is additionally arranged between the outer flame-retardant layer 2 and the outer aluminum foil wrapping layer 4.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A flame retardant construction for a cable, characterized by: including polyurethane oversheath (1), the inboard of polyurethane oversheath (1) is equipped with outer fire-retardant layer (2), the inboard of outer fire-retardant layer (2) is equipped with outer aluminium foil around covering (4), the inboard of outer aluminium foil around covering (4) is equipped with interior fire-retardant filling layer (10), the inboard of interior fire-retardant filling layer (10) is equipped with polymer fire-retardant granule (11), the inboard of interior fire-retardant filling layer (10) is equipped with interior aluminium foil around covering (5), the inboard of interior aluminium foil around covering (5) is equipped with fire-retardant sheath (6), the inboard of fire-retardant sheath (6) is equipped with sinle silk (7).
2. A flame retardant structure for an electrical cable according to claim 1, wherein: a shielding braiding layer (3) is arranged between the outer flame retardant layer (2) and the outer aluminum foil wrapping layer (4), and the shielding braiding layer (3) is formed by braiding 5 strands of copper wire warps and 5 strands of copper wire wefts.
3. A flame retardant structure for an electrical cable according to claim 1, wherein: and a polyvinyl chloride wrapping layer (9) is arranged between the inner combustion filling layer (10) and the outer aluminum foil wrapping layer.
4. A flame retardant structure for an electrical cable according to claim 1, wherein: the inner side of the inner resistance filling layer (10) is provided with 4 inner aluminum foil wrapping layers (5) in equal angles.
5. A flame retardant structure for an electrical cable according to claim 1, wherein: the flame retardant sheath (6) comprises a first polyurethane sheath layer (601) and a second polyurethane sheath layer (603), a first flame retardant layer (602) is arranged between the first polyurethane sheath layer (601) and the second polyurethane sheath layer (603), and a second flame retardant layer (604) is arranged on the inner side of the second polyurethane sheath layer (603).
6. A flame retardant structure for an electrical cable according to claim 5, wherein: and a talcum powder layer (8) is arranged on the inner side of the second flame retardant layer (604).
7. A flame retardant structure for an electrical cable according to claim 1, wherein: a heat-resistant layer (12) is arranged between the polyurethane outer sheath (1) and the outer flame-retardant layer (2), and the heat-resistant layer (12) is specifically made of a nitrogen-lao-boron fiber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320208693.8U CN219418566U (en) | 2023-02-01 | 2023-02-01 | Flame-retardant structure of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320208693.8U CN219418566U (en) | 2023-02-01 | 2023-02-01 | Flame-retardant structure of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219418566U true CN219418566U (en) | 2023-07-25 |
Family
ID=87242699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320208693.8U Active CN219418566U (en) | 2023-02-01 | 2023-02-01 | Flame-retardant structure of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219418566U (en) |
-
2023
- 2023-02-01 CN CN202320208693.8U patent/CN219418566U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104715840B (en) | The maritime platform essential safe type oil resistant fireproof cable of resistance to mud and preparation technology | |
| CN112397239A (en) | Practical wire and cable of resistance to compression heat resistance | |
| CN110660509A (en) | Flame-retardant heat-dissipation type automobile cable | |
| CN210223639U (en) | High-temperature-resistant cable for vehicle | |
| CN219418566U (en) | Flame-retardant structure of cable | |
| CN204423958U (en) | The maritime platform essential safe type oil resistant fireproof cable of resistance to mud | |
| CN212010456U (en) | Environment-friendly flame-retardant anti-interference cable | |
| CN215450968U (en) | Stretch-proofing fire-retardant fire resisting cable | |
| CN205943533U (en) | Low -voltage power cable for nuclear power plant | |
| CN214671950U (en) | High flame-retardant insulated wire and cable | |
| CN212570438U (en) | Copper core crosslinked polyethylene insulation armored power cable | |
| CN104240802A (en) | Flexible cable for intrinsic safety DCS | |
| CN208335819U (en) | A kind of insulated cable with anti-complications | |
| CN216084402U (en) | High-performance environment-friendly special frequency conversion cable | |
| CN215868762U (en) | Composite cable | |
| CN214796796U (en) | Medium-voltage power cable with large current-carrying capacity | |
| CN216014885U (en) | High-voltage-resistant reinforced insulation motor cable | |
| CN212303120U (en) | Cable with high flexibility | |
| CN217788043U (en) | High flame retardant cable with good distortion resistance effect | |
| CN219457180U (en) | Composite structure control cable | |
| CN214624505U (en) | Low-temperature-resistant flame-retardant composite cable for electric power and computer | |
| CN215577741U (en) | Flame-retardant control cable for coal mining machine | |
| CN216697916U (en) | High-temperature-resistant crosslinked polyethylene armored fireproof cable | |
| CN215183220U (en) | Flame-retardant four-core cable with high insulation resistance | |
| CN210349351U (en) | Inorganic mineral insulated corrugated aluminum sheath fireproof cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |