CN219642598U - High-temperature-resistant polyolefin sheath fireproof power cable - Google Patents
High-temperature-resistant polyolefin sheath fireproof power cable Download PDFInfo
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- CN219642598U CN219642598U CN202320738416.8U CN202320738416U CN219642598U CN 219642598 U CN219642598 U CN 219642598U CN 202320738416 U CN202320738416 U CN 202320738416U CN 219642598 U CN219642598 U CN 219642598U
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- Prior art keywords
- belt
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- outside
- power cable
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 32
- 239000004809 Teflon Substances 0.000 claims abstract description 25
- 229920006362 Teflon® Polymers 0.000 claims abstract description 25
- 239000004744 fabric Substances 0.000 claims abstract description 24
- 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 claims abstract description 23
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 15
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 12
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 239000004945 silicone rubber Substances 0.000 claims abstract description 7
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 50
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 10
- 230000009970 fire resistant effect Effects 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 7
- 229920002748 Basalt fiber Polymers 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 229920004933 Terylene® Polymers 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract 3
- 239000010703 silicon Substances 0.000 abstract 3
- 239000002585 base Substances 0.000 description 10
- 238000009413 insulation Methods 0.000 description 8
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000002679 ablation Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- -1 so that the strength Substances 0.000 description 1
- 230000002277 temperature effect 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
Abstract
The utility model discloses a high-temperature-resistant polyolefin sheath fireproof power cable which comprises a cable core, wherein the cable core is formed by twisting a plurality of insulating wire cores, epoxy resin glue is filled in a gap of the cable core, a teflon composite fireproof belt is overlapped and wrapped outside the cable core, a thermoplastic silicone rubber inner sheath is extruded outside the teflon composite fireproof belt, a tin-plated copper braid belt is woven outside the thermoplastic silicone rubber inner sheath, a glass fiber coating cloth is wrapped outside the tin-plated copper braid belt, a high-temperature-resistant aluminum-plastic composite belt is wrapped outside the glass fiber coating cloth, a high-silicon fiber fireproof belt is overlapped and wrapped outside the high-silicon fiber fireproof belt, and a thermoplastic halogen-free low-smoke flame-retardant polyolefin outer sheath is extruded outside the high-silicon fiber fireproof belt. The utility model has the characteristics of chemical corrosion resistance, high temperature resistance, high strength, high flame retardance, good fireproof performance, stable chemical performance and the like.
Description
Technical Field
The utility model relates to the field of wires and cables, in particular to a high-temperature-resistant fireproof power cable with a polyolefin sheath.
Background
With the continuous development of the economy and the continuous improvement of the living standard of people in China, the consumption concept and the consumption level of people are greatly changed and improved. Under this opportunity, the fire-resistant cable industry has also rapidly developed, and from the market scale development of these two years, the fire-resistant cable industry is under rapid development.
Fireproof cables, in a broad sense, are a generic term for wires and cables having a fire-resistant property, and refer to a class of wires and cables having a property of directly or indirectly reducing loss of fire under fire conditions, and are generally classified into flame-retardant wires and cables and flame-retardant wires and cables, wherein when the cable burns under prescribed test conditions, flame spreads over a cable specimen but does not exceed a prescribed range and self-extinguishes after removing the fire source, i.e., the ability to prevent or delay the occurrence or spread of flame.
External fire can damage the integrated wiring system, causing transmission interruption. At the same time, the comprehensive wiring system can generate more or less harmful gas and smoke in the flame, and can also help the fire to spread to other floors or other rooms gradually. With the increasing importance of people on environmental protection and fire protection consciousness, the fire department has continuously improved the requirements on the safety and reliability of the fire-fighting system of modern high-rise buildings, various important construction projects and civil houses. Modern buildings have made great technical advances in terms of function, structure, materials, etc. The building uses a large amount of organic chemical materials, the traditional fireproof cable is not suitable for the actual condition of strong flame and ultra-high temperature of modern building fire, and the temperature grade of the fireproof cable is necessary to be improved continuously; the existing cable is poor in strength, elasticity, heat resistance, wear resistance, light resistance, fire resistance, high temperature resistance and corrosion resistance, so that the service life of the cable is short.
In addition, the insulating layer of the cable is used for electrically isolating the wire core from the ground and the wire cores with different phases, so that electric energy transmission is ensured, and the cable is an indispensable component in the power cable structure. However, the insulating property of the cable insulating layer in the current industry is insufficient, and the cable insulating layer cannot resist high temperature and has poor fireproof performance when facing the high temperature generated by overload and overcurrent, so that the cable insulating layer loses the insulating function and an electrical fire disaster is caused.
And secondly, the flame retardant and fireproof structure of the cable is single, so that the high temperature resistance, flame retardance and fireproof performance of the cable are poor, and the use of the cable is affected.
Disclosure of Invention
In order to overcome the defects in the prior art, the fireproof power cable with the high-temperature-resistant polyolefin sheath has the characteristics of chemical corrosion resistance, high temperature resistance, high strength, high flame retardance, good fireproof performance, stable chemical performance and the like.
The utility model provides a high-temperature-resistant polyolefin sheath fireproof power cable which comprises a cable core, wherein the cable core is formed by twisting a plurality of insulating wire cores, epoxy resin glue is filled in a gap of the cable core, a teflon composite fireproof belt is overlapped and wrapped outside the cable core, a thermoplastic silicone rubber inner sheath is extruded outside the teflon composite fireproof belt, a tin-plated copper braid belt is woven outside the thermoplastic silicone rubber inner sheath, a glass fiber coating cloth with wrapping thickness of 0.8-1.0mm is wrapped outside the tin-plated copper braid belt, a high-temperature-resistant aluminum-plastic composite belt is wrapped outside the glass fiber coating cloth, a high-silica fiber fireproof belt with wrapping thickness of 1.0-3.0mm is overlapped outside the high-temperature-resistant aluminum-plastic composite belt, and a thermoplastic halogen-free low-smoke flame-retardant polyolefin outer sheath is extruded outside the high-silica fiber fireproof belt.
Preferably, the insulating wire core is composed of a conductor formed by twisting graphene coated soft copper wire bundles and an insulating layer arranged outside the conductor.
Preferably, the insulating layer comprises a first base layer, a composite layer and a second base layer, and the first base layer, the composite layer and the second base layer are sequentially compounded.
Preferably, the composite layer is basalt fiber fabric and insulating heat-conducting glue layers coated on the front side and the back side of the basalt fiber fabric.
Preferably, the first base layer is a PET insulating film.
Preferably, the second base layer is a high silica fiber insulating tape.
Preferably, the teflon composite fireproof belt comprises a teflon grid belt matrix, wherein the upper surface of the teflon grid belt matrix is compounded with terylene flame-retardant non-woven fabrics through insulating heat-conducting glue, and the lower surface of the teflon grid belt matrix is connected with compound glass fiber flame-retardant fabrics through insulating heat-conducting glue.
Preferably, the overlapping wrapping rate of the high silica fiber fire belt is not lower than 90%.
Compared with the prior art, the utility model has the beneficial effects that:
the graphene coated copper wire with better conductivity and mechanical strength than the common coated copper wire is adopted as the conductor, so that the section of the conductor can be reduced under the condition of transmitting the same conductive capacity load, and the section of the electric wire can not be increased too much under the condition of adding one insulating layer;
the insulation layer with the composite structure can increase the electrical insulation, high temperature resistance and flame retardance and fireproof performance of the cable insulation layer, so that the cable insulation layer can play a better role in protection;
the cable core is filled with the epoxy resin glue, so that the cable core is more round and the stability of the cable core is ensured; the cable has excellent physical and mechanical properties, electrical insulation properties, chemical corrosion resistance and heat resistance, ensures the rolling resistance of the cable core, and ensures that the cable core is not easy to deform;
the Teflon composite fireproof belt is adopted, wherein the carbon fiber woven cloth is formed by high-temperature oxidization and carbonization, and has the characteristics of high strength, excellent heat resistance, excellent thermal shock resistance, low thermal expansion coefficient (small deformation), small heat capacity, small specific gravity, excellent corrosion resistance, excellent radiation resistance and the like, so that the cable strength can be greatly improved; the glass fiber fireproof flame-retardant cloth has good fireproof performance, high temperature resistance and strong corrosion resistance;
the Teflon grid of the inner layer has good chemical corrosion resistance, high temperature resistance and high strength, the terylene flame-retardant non-woven fabric has high strength, good elasticity, good heat resistance, good wear resistance and good light resistance, and is compounded with the carbon fiber woven fabric and the glass fiber flame-retardant fabric, after the compounding, the cable has 10 to 20 times better performance than the existing cable which adopts non-woven fabrics, glass fibers and other flame-retardant materials, so that the strength, chemical corrosion resistance, high temperature resistance and flame resistance of the cable are all optimal in the similar cables, the cable is further improved in the flame-retardant cable, and the cable has long service life and is suitable for market demands.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of an insulating layer according to the present utility model;
fig. 3 is a schematic structural view of the teflon composite fire protection belt of the present utility model.
Description of the embodiments
The present utility model is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the utility model and not limiting of its scope, and various modifications of the utility model, which are equivalent to those skilled in the art upon reading the utility model, will fall within the scope of the utility model as defined in the appended claims.
As shown in fig. 1-2, the utility model provides a high-temperature-resistant polyolefin sheath flame-retardant power cable, which comprises a cable core, wherein the cable core is formed by twisting a plurality of insulating wire cores; the insulated wire core is composed of a conductor 1 formed by twisting graphene coated soft copper wire bundles and an insulating layer 2 arranged outside the conductor; the conductor adopts the graphene coated copper wire with better conductivity and mechanical strength than the common coated copper wire, and the section of the conductor can be reduced under the condition of transmitting the same conductive capacity load, so that the section of the electric wire can not be increased too much under the condition of adding one insulating layer;
the insulating layer comprises a first base layer 21, a composite layer 22 and a second base layer 23, which are sequentially compounded; the composite layer 22 is basalt fiber fabric and insulating heat conducting glue layers 24 coated on the front side and the back side of the basalt fiber fabric; the insulation layer with the composite structure can increase the electrical insulation property and the high temperature resistance of the cable insulation layer, so that the cable insulation layer can play a better role in protection; in addition, the first base layer adopts a PET insulating film, has high tensile strength, is resistant to burning crack, is not easy to damage, has excellent electrical and optical properties, is good in flame retardance and moisture resistance, is cold-resistant and heat-resistant, has excellent characteristics of corrosion resistance and stable contractibility, and further improves various characteristics of the insulating layer; the second base layer is a high silica fiber insulating tape, has high strength, high toughness and easy processing, can be used for high temperature resistance, ablation resistance and heat insulation under high temperature severe conditions, has excellent performances of stable chemical performance, high temperature resistance, ablation resistance, incombustibility, acid resistance and the like, further enhances various performances of the wire core, such as high temperature resistance, acid resistance, ablation resistance and the like, can be used for a long time at 1000 ℃, can work for 10 minutes at 1450 ℃, and still remains in an intact state at 1600 ℃ for 15 seconds.
The gaps of the cable core are filled with the epoxy resin glue 3, so that the cable core is more round and the stability of the cable core is ensured; the cable core is overlapped and wrapped with the teflon composite fireproof belt 4, and the teflon composite fireproof belt is externally wrapped with the thermoplastic silicone rubber inner protective layer 5 in an extrusion manner, so that the cable has good physical and mechanical properties, high temperature resistance, good weather resistance, strong chemical stability, good oil resistance, excellent electrical insulation performance, good elasticity and rebound resilience, and the compression resistance of the cable is further enhanced;
the tinned copper braided belt 6 is braided outside the thermoplastic silicon rubber inner protective layer, and the glass fiber rubberized fabric 7 with the thickness of 0.8-1.0mm is formed by wrapping the tinned copper braided belt, is fireproof cloth with high-temperature glue on the surface of the glass fiber cloth through mechanical coating, does not burn when being contacted with flame, has the long-term use temperature of less than or equal to 500 ℃, and has the functions of fire prevention and alkali resistance; the glass fiber rubberized fabric is coated with a high-temperature resistant aluminum-plastic composite belt 8, a high-silica fiber fireproof belt 9 with the thickness of 1.0-3.0mm is overlapped and wrapped outside the high-temperature resistant aluminum-plastic composite belt, the overlapping and wrapping rate is not lower than 90%, the high-silica fiber belt is formed by carding and braiding high-silica fiber yarns rich in 97.3% of silica, the fireproof high-silica fiber belt is braided compactly, has good heat insulation and constant temperature effects, is high in heat resistance, can continuously work at the high temperature of 1000 ℃ for a long time, does not embrittle, does not generate dust, does not generate harmful gas, and is environment-friendly; the multi-layer flame-retardant fireproof structure is adopted inside, so that the flame retardance and the fire resistance of the cable are further enhanced;
the thermoplastic halogen-free low-smoke flame-retardant polyolefin outer sheath 10 extruded outside the high-silica fiber fireproof band has the advantages of low smoke, no toxicity, good drip resistance, excellent dielectric property, excellent cracking resistance, burning crust and good flame retardance, and further improves the flame retardance of the cable.
As shown in fig. 3, the teflon composite fireproof belt 4 comprises a teflon mesh belt matrix 41, and an insulating heat-conducting glue composite carbon fiber woven cloth 42 is formed by high-temperature oxidization and carbonization on the upper surface of the teflon mesh belt matrix, so that the cable strength can be greatly improved due to the characteristics of high strength, excellent heat resistance, excellent thermal shock resistance, low thermal expansion coefficient (small deformation), small heat capacity, small specific gravity, excellent corrosion resistance, excellent radiation resistance and the like; the lower surface of the Teflon mesh belt matrix is connected with a composite glass fiber fireproof flame-retardant cloth 43 through insulating heat-conducting glue, so that the Teflon mesh belt has good fireproof performance, high temperature resistance and strong corrosion resistance;
the Teflon grid of the inner layer has good chemical corrosion resistance, high temperature resistance and high strength, the terylene flame-retardant non-woven fabric has high strength, good elasticity, good heat resistance, good wear resistance and good light resistance, and is compounded with the carbon fiber woven fabric and the glass fiber flame-retardant fabric, and the cable has 10-20 times better performance than the existing cable which adopts the non-woven fabric, the glass fiber and other flame-retardant materials, so that the strength, the chemical corrosion resistance, the high temperature resistance and the flame resistance of the cable are all optimal in the similar cable, the cable is further improved in the flame-retardant cable, and the cable is suitable for market demands.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that variations and modifications could be made by those skilled in the art without departing from the principles of the present utility model, which would also be considered to fall within the scope of the utility model.
Claims (8)
1. The utility model provides a high temperature resistant polyolefin sheath fireproof power cable which characterized in that: the cable comprises a cable core, wherein the cable core is formed by twisting a plurality of insulating wire cores, epoxy resin glue is filled in a gap of the cable core, a teflon composite fire-proof belt is overlapped and wrapped outside the cable core, a thermoplastic silicone rubber inner protective layer is extruded outside the teflon composite fire-proof belt, a tin-plated copper braid belt is woven outside the thermoplastic silicone rubber inner protective layer, a glass fiber rubberized fabric with the wrapping thickness of 0.8-1.0mm is wrapped outside the tin-plated copper braid belt, a high-temperature-resistant aluminum-plastic composite belt is wrapped outside the glass fiber rubberized fabric, a high-silica fiber fire-proof belt with the wrapping thickness of 1.0-3.0mm is overlapped outside the high-temperature-resistant aluminum-plastic composite belt, and a thermoplastic halogen-free low-smoke flame-retardant polyolefin outer sheath is extruded outside the high-silica fiber fire-proof belt.
2. The high temperature resistant polyolefin jacketed fire resistant power cable of claim 1, wherein: the insulated wire core is composed of a conductor formed by twisting graphene coated soft copper wire bundles and an insulating layer arranged outside the conductor.
3. The high temperature resistant polyolefin jacketed fire resistant power cable of claim 2, wherein: the insulating layer comprises a first base layer, a composite layer and a second base layer, and the first base layer, the composite layer and the second base layer are sequentially compounded.
4. A high temperature resistant polyolefin jacketed fire resistant power cable as in claim 3, wherein: the composite layer is basalt fiber fabric and insulating heat-conducting glue layers coated on the front side and the back side of the basalt fiber fabric.
5. A high temperature resistant polyolefin jacketed fire resistant power cable as in claim 3, wherein: the first base layer is a PET insulating film.
6. A high temperature resistant polyolefin jacketed fire resistant power cable as in claim 3, wherein: the second base layer is a high silica fiber insulating tape.
7. The high temperature resistant polyolefin jacketed fire resistant power cable of claim 1, wherein: the teflon composite fireproof belt comprises a teflon grid belt matrix, wherein the upper surface of the teflon grid belt matrix is compounded with terylene flame-retardant non-woven fabrics through insulating heat-conducting glue, and the lower surface of the teflon grid belt matrix is connected with compound glass fiber flame-retardant fabrics through insulating heat-conducting glue.
8. The high temperature resistant polyolefin jacketed fire resistant power cable of claim 1, wherein: the overlapping wrapping rate of the high silica fiber fire-proof belt is not lower than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320738416.8U CN219642598U (en) | 2023-04-06 | 2023-04-06 | High-temperature-resistant polyolefin sheath fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320738416.8U CN219642598U (en) | 2023-04-06 | 2023-04-06 | High-temperature-resistant polyolefin sheath fireproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219642598U true CN219642598U (en) | 2023-09-05 |
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ID=87813927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320738416.8U Active CN219642598U (en) | 2023-04-06 | 2023-04-06 | High-temperature-resistant polyolefin sheath fireproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219642598U (en) |
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2023
- 2023-04-06 CN CN202320738416.8U patent/CN219642598U/en active Active
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