CN216928071U - High-temperature-resistant flame-retardant flexible cable - Google Patents
High-temperature-resistant flame-retardant flexible cable Download PDFInfo
- Publication number
- CN216928071U CN216928071U CN202220191221.1U CN202220191221U CN216928071U CN 216928071 U CN216928071 U CN 216928071U CN 202220191221 U CN202220191221 U CN 202220191221U CN 216928071 U CN216928071 U CN 216928071U
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- China
- Prior art keywords
- layer
- flame retardant
- flexible cable
- high temperature
- resistant flame
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 41
- 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 40
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 70
- 239000000463 material Substances 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 10
- 239000004945 silicone rubber Substances 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 239000004703 cross-linked polyethylene Substances 0.000 description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000010521 absorption reaction Methods 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
- 230000001488 breeding effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
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- 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
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- Insulated Conductors (AREA)
Abstract
The utility model belongs to the technical field of flexible cables, and particularly relates to a high-temperature-resistant flame-retardant flexible cable. The conductor is formed by twisting a plurality of fine twisted oxygen-free copper wires, the silicon rubber insulating layers are coated on the outer layer of the conductor, the wrapping layer is coated on the outer layer of the silicon rubber insulating layers, the filler is filled between the wrapping layer and the silicon rubber insulating layers, and the sheathing layer is coated on the outer layer of the wrapping layer. The utility model is used for solving the problem of inconvenient installation.
Description
Technical Field
The utility model belongs to the technical field of flexible cables, and particularly relates to a high-temperature-resistant flame-retardant flexible cable.
Background
In modern cities, high-rise buildings are built at any time of social development, and in many buildings, the frequency of using air conditioners in summer and winter is high, the power consumption is increased rapidly, and the phenomenon of short-term power load overload exists. Meanwhile, higher requirements are put forward for the cables to guarantee the personal safety of personnel, the spread of fire is prevented as much as possible, the emission of harmful gas generated during combustion is reduced, and the difficulty of complex installation of an electric circuit is increased, so that flame-retardant and overload-resistant cables are selected from large domestic projects.
However, most of the existing cables are made of polyvinyl chloride materials and crosslinked polyethylene, and the bending radius of the cable is six to eight times of the outer diameter of the finished cable, so that the cable cannot be applied to some occasions with complicated wiring arrangement, and the installation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application embodiment will solve lies in overcoming prior art not enough, provides a fire-retardant flexible cable of high temperature resistant for solve the inconvenient problem of installation.
The technical scheme for solving the technical problems in the embodiment of the application is as follows: a high temperature resistant flame retardant flexible cable comprising:
the conductors are formed by stranding a plurality of strands of fine-twisted oxygen-free copper wires;
the silicon rubber insulating layer is coated on the outer layer of the conductor;
the wrapping tape layer is wrapped on the outer layers of the silicon rubber insulating layers;
the filling material is filled between the belting layer and the silicon rubber insulating layer;
and the sheath layer is coated on the outer layer of the belting layer.
Compared with the prior art, the technical scheme has the following beneficial effects:
adopt the flexible copper wire transposition bunch silk conductor of stranded fine twisting anaerobic, and the insulating layer of silicon rubber material, guaranteed the degree of flexibleness of cable, conventional polyvinyl chloride material and crosslinked polyethylene flexible cable minimum bend radius 6 ~ 8D, wherein D stands for the finished product external diameter, chooses for use silicon rubber cable minimum bend radius 4D, and bend radius is little, can conveniently bend, the installation of being more convenient for.
Further, the outer layer of the copper wire is coated with a tinning layer.
Furthermore, the thickness of the tinning layer is more than or equal to 1.27 mu m.
Further, the single-layer conductor has the twist pitch ratio of 12-14 times.
Furthermore, the conductor is divided into at least an inner layer and an outer layer, wherein the inner layer pitch-diameter ratio is 18-20 times, and the outer layer pitch-diameter ratio is 13-15 times.
Further, the filler is alkali-free glass fiber rope filler.
Further, the belting layer is formed by wrapping halogen-free low-smoke flame-retardant glass cloth.
Further, at least one surface of the halogen-free low-smoke flame-retardant glass cloth is coated with a flame-retardant coating.
Further, the thickness of the halogen-free low-smoke flame-retardant glass cloth is 0.18mm-0.22 mm.
Further, the sheath layer is a flame-retardant silicone rubber sheath layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
Reference numerals:
1. a conductor; 2. a silicon rubber insulating layer; 3. a belting layer; 4. a filler; 5. and a sheath layer.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
As shown in fig. 1, an embodiment of the present invention provides a high temperature resistant flame retardant flexible cable, which includes: the conductor comprises five conductors 1, wherein the conductors are formed by stranding a plurality of strands of fine-twisted oxygen-free copper wires, a silicon rubber insulating layer 2 is coated on the outer layer of the conductors, a belting layer 3 is coated on the outer layer of the silicon rubber insulating layer, a filler 4 is filled between the belting layer and the silicon rubber insulating layer, and a sheath layer 5 is coated on the outer layer of the belting layer.
Adopt the flexible copper wire transposition bunch silk conductor of stranded fine twisting anaerobic, and the insulating layer of silicon rubber material, guaranteed the degree of flexibleness of cable, conventional polyvinyl chloride material and crosslinked polyethylene flexible cable minimum bend radius 6 ~ 8D, wherein D stands for the finished product external diameter, chooses for use silicon rubber cable minimum bend radius 4D, and bend radius is little, can conveniently bend, the installation of being more convenient for.
The insulating layer is a silicon rubber insulating layer, the silicon rubber silicon-oxygen bond has high bonding energy, so the insulating layer has high thermal stability, the long-term use temperature range can reach 180-250 ℃, the good thermal conductivity can improve the current carrying capacity of the cable, the silicon rubber material has stable electrical insulating property even under the condition of high temperature and frequency change or tide, the silicon dioxide generated after combustion is still an insulator, and the insulating layer has high resistivity, the insulating resistance value of the silicon rubber material is stable, the insulating resistance value of the silicon rubber material can be stable in a wide temperature and frequency range, and the silicon rubber material has good resistance to high-voltage corona discharge and arc discharge, and has the characteristic of softness, so the cable product has excellent electrical performance by using the material, and is convenient to install. Therefore, the selected silicon rubber material not only can meet the requirement of high-temperature resistant use environment, but also has the flexibility of the cable and ensures the excellent electrical performance of the cable.
In addition, in the case of high ambient temperature, the insulation and sheath materials of ordinary cables are easily embrittled in a short time, and silicone rubber has excellent thermal stability. The current-carrying capacity of the cable is related to the conductor section, the insulation thickness and the material, and the higher the insulation temperature-resistant grade and the higher the current-carrying capacity are in the same conductor section. For example, the current-carrying capacity of a 70 ℃ polyvinyl chloride insulated and sheathed cable VV 5 × 16 in air (40 ℃) is 66A, the current-carrying capacity of a 90 ℃ cross-linked polyethylene insulated and polyvinyl chloride sheathed cable YJV5 × 16 in air (40 ℃) is 84A, and the current-carrying capacity of a 180 ℃ silicone rubber insulated and sheathed cable GG 5 × 16 in air (40 ℃) is 102A, through data comparison, the current-carrying capacity of the silicone rubber cable is about 15-20% higher than that of a common cable, and the current-carrying capacity and the overload resistance of the cable are better improved.
In this embodiment, the outer layer of the copper wire is coated with a tin plating layer; wherein the thickness of the tin plating layer is more than or equal to 1.27 mu m, the continuity of the conductor is ensured, and the oxidation resistance is improved.
When the conductor is of a single-layer structure, the stranding pitch ratio of the single-layer conductor is 12-14 times.
When the conductor is a large-section conductor, a layered structure is adopted, and the conductor is at least divided into an inner layer and an outer layer, wherein the pitch diameter ratio of the inner layer is 18-20 times, and the pitch diameter ratio of the outer layer is 13-15 times.
Different pitch-diameter ratios are set according to different structures, so that the flexibility and the flexibility of the wire core are ensured.
The filler is alkali-free glass fiber rope filler.
The belting layer is formed by wrapping halogen-free low-smoke flame-retardant glass cloth.
And at least one surface of the halogen-free low-smoke flame-retardant glass cloth is coated with a flame-retardant coating, and then an inorganic flame retardant is added to prepare the flame-retardant glass cloth.
Furthermore, the thickness of the halogen-free low-smoke flame-retardant glass cloth is 0.18mm-0.22mm, the longitudinal strength is more than or equal to 300N/mm2, the oxygen index is more than or equal to 50%, the smoke density (NF method) is less than or equal to 150Dm, the acidity pH value is more than or equal to 4.3, and the conductivity is less than or equal to 10 mu S/mm, so that the flame-retardant performance of the cable can be effectively provided, the external flame can be isolated during combustion, the cable is protected, and the flame-retardant effect is achieved.
The sheath layer is a flame-retardant silicone rubber sheath layer;
although the common organic silicon rubber meets the high-temperature use environment and has good flexibility, the self flame-retardant effect is not good, the flame-retardant silicon rubber material is selected, the flame retardant is added into the silicon rubber material, the silicone rubber material is heated to expand during combustion, a crust layer similar to a fixed structure is formed on the surface of the silicone rubber material, and the flame can be prevented from being transferred from outside to inside under the condition of not being touched by external force, so that the internal insulation wire core is not influenced by external flame, the integrity of a cable circuit is ensured, and the cable has the flame-retardant performance; through verification, the carbonization height of the vertical combustion test in bundle installation is 0.5-0.7 mm, excellent flame retardant property is guaranteed, and a fixed crust formed on the surface during combustion is solid and cannot float in the air, so that the effect of dust suction of people during fire is avoided, and the harm to the people is reduced. In addition, the water absorption of the silicon rubber material is not more than 0.015 percent, the silicon rubber material has no breeding effect on various algae and mould, has good mildew resistance and is suitable for being used in the places with worse environment such as water vapor and humidity.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A high temperature resistant flame retardant flexible cable, comprising:
the conductors are formed by stranding a plurality of strands of fine-twisted oxygen-free copper wires;
the silicon rubber insulating layer is coated on the outer layer of the conductor;
the wrapping tape layer is wrapped on the outer layers of the silicon rubber insulating layers;
the filling material is filled between the belting layer and the silicon rubber insulating layer;
and the sheath layer is coated on the outer layer of the belting layer.
2. The high temperature resistant flame retardant flexible cable according to claim 1, wherein the outer layer of copper wire is coated with a tin plating layer.
3. The high temperature resistant flame retardant flexible cable according to claim 2, wherein the thickness of the tin plating layer is greater than or equal to 1.27 μm.
4. The high temperature resistant flame retardant flexible cable according to claim 1, wherein the single layer conductor has a twist pitch ratio of 12 to 14 times.
5. The high temperature resistant flame retardant flexible cable according to claim 1, wherein the conductor is divided into at least an inner layer and an outer layer, wherein the inner layer pitch ratio is 18-20 times, and the outer layer pitch ratio is 13-15 times.
6. The high temperature resistant flame retardant flexible cable of claim 1, wherein the filler is an alkali free glass fiber cord filler.
7. The high-temperature-resistant flame-retardant flexible cable according to claim 1, wherein the wrapping layer is formed by wrapping halogen-free low-smoke flame-retardant glass cloth.
8. The high temperature resistant flame retardant flexible cable according to claim 7, wherein at least one side of said halogen-free low smoke flame retardant glass cloth is coated with a flame retardant coating.
9. The high temperature resistant flame retardant flexible cable according to claim 8, wherein the thickness of the halogen-free low smoke flame retardant glass cloth is 0.18mm-0.22 mm.
10. The high temperature resistant flame retardant flexible cable according to claim 1, wherein the sheath layer is a flame retardant silicone rubber sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220191221.1U CN216928071U (en) | 2022-01-24 | 2022-01-24 | High-temperature-resistant flame-retardant flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220191221.1U CN216928071U (en) | 2022-01-24 | 2022-01-24 | High-temperature-resistant flame-retardant flexible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928071U true CN216928071U (en) | 2022-07-08 |
Family
ID=82263688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220191221.1U Active CN216928071U (en) | 2022-01-24 | 2022-01-24 | High-temperature-resistant flame-retardant flexible cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928071U (en) |
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2022
- 2022-01-24 CN CN202220191221.1U patent/CN216928071U/en active Active
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