CN219811361U - Composite fireproof power cable - Google Patents
Composite fireproof power cable Download PDFInfo
- Publication number
- CN219811361U CN219811361U CN202320691921.1U CN202320691921U CN219811361U CN 219811361 U CN219811361 U CN 219811361U CN 202320691921 U CN202320691921 U CN 202320691921U CN 219811361 U CN219811361 U CN 219811361U
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- CN
- China
- Prior art keywords
- fire
- sheath
- cable
- power cable
- insulating layer
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- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 34
- 239000010445 mica Substances 0.000 claims abstract description 33
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 33
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 239000011490 mineral wool Substances 0.000 claims abstract description 10
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 10
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 7
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 7
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 7
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- KZKGLGIVGQYOTG-UHFFFAOYSA-N [F].[Au] Chemical compound [F].[Au] KZKGLGIVGQYOTG-UHFFFAOYSA-N 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 238000009941 weaving Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 5
- 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 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting 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
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FKIQSOGFDBALHA-UHFFFAOYSA-L aluminum trimagnesium potassium dioxido(oxo)silane oxygen(2-) difluoride Chemical compound [O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[K+].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O FKIQSOGFDBALHA-UHFFFAOYSA-L 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 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
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model relates to the technical field of cables, in particular to a composite fireproof power cable which comprises a plurality of groups of cable inner cores, wherein fire-resistant mica tapes are arranged on the outer surfaces of the cable inner cores, double-layer shielding layers are arranged on the outer surfaces of the fire-resistant mica tapes in a wrapping mode, insulating layers are fixedly arranged on the outer surfaces of the shielding layers, inner jackets are arranged on the outer surfaces of the insulating layers, fireproof rock wool is filled between the inner jackets and the insulating layers, armor layers are arranged on the outer surfaces of the inner jackets, and outer jackets are arranged on the outer surfaces of the armor layers. According to the utility model, the multi-layer fire-resistant mica tape is wrapped on the cable inner core, and fireproof rock wool is filled between the inner sheath and the insulating layer, the insulating layer is a crosslinked polyethylene insulating layer, the inner sheath is a polyvinyl chloride inner sheath, the outer sheath is a ceramic silicon rubber outer sheath, and the ceramic silicon rubber outer sheath is carbonized after fire burning to form a carbonized layer, so that a fire source can be blocked, and the cable inner core is prevented from being exposed and short circuit is prevented from being formed due to the fire source.
Description
Technical Field
The utility model relates to a cable, in particular to a composite fireproof power cable, and belongs to the technical field of cables.
Background
The power cable is a cable for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station outgoing lines, power supply in industrial and mining enterprises and power transmission lines under the sea water crossing the river, and is generally a cable similar to a rope formed by twisting several or several groups of wires (at least two wires in each group), wherein each group of wires are mutually insulated and are often twisted around a center, and the whole outside is covered with a highly insulating coating. The cable has an inner energized, outer insulated feature.
With the continuous development and progress of society, the requirements on cables are more and more strict, the existing power cables also have a certain fireproof standard, the existing power cables are basically fireproof through flame-retardant materials or corrugated copper pipe sheaths, the flame-retardant materials are nonflammable, the flame temperature reaches and still burns, the inner cores of the cables cannot be protected, the manufacturing process of the corrugated copper pipes is complex, the price of copper is high, and the manufacturing cost of the power cables causing the fireproof is too high.
Accordingly, there is a need for an improved fire-resistant power cable that addresses the above-described problems.
Disclosure of Invention
The utility model aims to provide a composite fireproof power cable, which is characterized in that a plurality of layers of fireproof mica tapes are wrapped on a cable inner core, fireproof rock wool is filled between an inner sheath and an insulating layer, the insulating layer is a crosslinked polyethylene insulating layer, the inner sheath is a polyvinyl chloride inner sheath, a ceramic silicon rubber outer sheath is used as an outer sheath, and the ceramic silicon rubber outer sheath is carbonized after being burnt to form a carbonized layer, so that a fire source can be blocked, and the cable inner core is prevented from being exposed and short circuit is prevented from being formed due to the fire source.
In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:
the utility model provides a compound fire prevention power cable, includes multiunit cable inner core, cable inner core surface is provided with fire-resistant mica tape, fire-resistant mica tape surface is provided with double-deck shielding layer around the package, the external fixation of shielding layer is provided with the insulating layer, the insulating layer external surface is provided with the inner sheath, the inner sheath with it has fire prevention rock wool to fill between the insulating layer, the surface of inner sheath is provided with the armor, the surface of armor is provided with the oversheath.
Preferably, the cable inner core is formed by twisting a plurality of copper wires, and the copper wires are all annealed oxygen-free copper wires.
Preferably, the fire-resistant mica tape is wrapped on the outer surface of the cable core by a plurality of layers, and the fire-resistant mica tape is wrapped by a plurality of layers with a thickness of 0.5mm to 1.5mm.
Preferably, the fire-resistant mica tape is a synthetic fluorophlogopite tape.
Preferably, the shielding layer is a copper wire woven shielding net, the shielding layer is woven in a branched manner, and the insulating layer is a crosslinked polyethylene insulating layer.
Preferably, the inner sheath is a polyvinyl chloride inner sheath, and the outer sheath is a ceramic silicone rubber outer sheath.
Preferably, the armor layer is steel tape armor.
The utility model has at least the following beneficial effects:
1. the fire-resistant mica tape is wrapped on the outer surface of the cable inner core through multiple layers, so that the fire-resistant mica tape is tightly attached to the outer surface of the cable inner core, fireproof rock wool is filled between the inner sheath and the insulating layer, and can isolate external fire of the cable, and the influence of the fire on the cable inner core is avoided.
2. The fire-resistant mica tape is a synthetic fluorine gold mica tape, the synthetic fluorine gold mica tape does not contain crystal water, the melting point is 1375 ℃, the safety margin is large, and the synthetic fluorine gold mica tape has excellent high temperature resistance and combustion resistance, and can avoid spontaneous combustion due to overhigh temperature inside a cable.
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 and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic view of an isometric structure of the present utility model;
FIG. 2 is a front view of the present utility model;
fig. 3 is a perspective cross-sectional view of the utility model without the cable core at A-A in fig. 2.
In the figure, 1, a cable inner core; 11. a fire resistant mica tape; 12. a shielding layer; 13. an insulating layer; 14. an inner sheath; 15. fireproof rock wool; 16. an armor layer; 17. an outer sheath; 2. copper wires.
Detailed Description
The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.
As shown in fig. 1-3, the composite fireproof power cable provided by the embodiment includes a plurality of groups of cable inner cores 1, the cable inner cores 1 are formed by twisting a plurality of copper wires 2, the flexibility of the cable inner cores 1 is better, the strength is larger, the reliability is higher and the stability is better through twisting the copper wires 2, the copper wires 2 are all annealed oxygen-free copper wires, the annealed oxygen-free copper wires have the high-quality characteristics of high purity, low oxygen content, high conductivity, good production and processing characteristics and the like, the conductivity of the cable inner cores 1 can be better, the outer surfaces of the cable inner cores 1 are provided with fire-resistant mica tapes 11, the outer surfaces of the fire-resistant mica tapes 11 are wrapped with double-layer shielding layers 12, the outer surfaces of the shielding layers 12 are fixedly provided with insulating layers 13, the outer surfaces of the insulating layers 13 are provided with inner jackets 14, fireproof rock wool 15 are filled between the inner jackets 14 and the insulating layers 13, the outer surfaces of the inner jackets 14 are provided with armor layers 16, the armor layers 16 are steel tape armor, the armor layers can improve the mechanical strength of the cable inner cores, the cable inner cores are provided with mechanical strength, and the mechanical strength of the cable sheaths can be increased, and the mechanical strength of the cable layers can be increased by rolling the armor layers of the armor layers 17.
Wherein, as shown in fig. 1, the fire-resistant mica tape 11 is wrapped on the outer surface of the cable core 1 through a plurality of layers, the thickness of the fire-resistant mica tape 11 wound by a plurality of layers is 0.5mm to 1.5mm, and the fire-resistant mica tape 11 can be tightly attached to the outer surface of the cable core 1 through wrapping the fire-resistant mica tape 11 on the cable core 1;
further, as shown in fig. 1, the fire-resistant mica tape 11 is a synthetic fluorine gold mica tape, which does not contain crystal water, has a melting point of 1375 ℃, has a large safety margin, has excellent high temperature resistance and combustion resistance, and can avoid spontaneous combustion due to overhigh internal temperature of the cable;
in a further step, as shown in fig. 1, the shielding layer 12 is a copper wire woven shielding net, the weaving mode of the shielding layer 12 is 128, the copper wire woven shielding net is mainly capable of resisting some external electromagnetic interference, the electromagnetic interference problem caused by external electromagnetic on power transmission is effectively prevented in the using process, the weaving mode of the shielding layer 12 is 128, the anti-interference performance is better, the insulating layer 13 is a crosslinked polyethylene insulating layer, a cable which is insulated by crosslinked polyethylene is adopted, the long-term working temperature of the cable can be increased to 90 ℃, and the bearable instantaneous short-circuit temperature can reach 170-250 ℃;
further, as shown in fig. 1, the inner sheath 14 is a polyvinyl chloride inner sheath, the polyvinyl chloride inner sheath has the advantage of good flame retardance, the outer sheath 17 is a ceramic silicone rubber outer sheath, the ceramic silicone rubber outer sheath has the characteristics of excellent fire resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, the residue after combustion is a hard ceramic shell, the hard shell is not melted and not dropped in a fire environment, and the line integrity test can be carried out by stipulating in GB/T19216.21-2003 at 950-1000 ℃ for 90min under fire, and cooling for 15 min.
As shown in fig. 1 to 3, the principle of the composite fireproof power cable provided in this embodiment is as follows: the cable inner core 1 is formed by twisting a plurality of copper wires 2, the outer surface of the cable inner core 1 is wrapped with a plurality of layers of fire-resistant mica tapes 11, the fire-resistant mica tapes 11 can be tightly attached to the outer surface of the cable inner core 1, the outer surface of the fire-resistant mica tapes 11 is wrapped with two layers of shielding nets which are woven in a 128-branch mode, the shielding nets are mainly used for resisting external electromagnetic interference, the outer surface of each shielding layer 12 is provided with an insulating layer 13, the insulating layers 13 are crosslinked polyethylene insulating layers and can play a certain flame-retardant effect, the insulating layers 13 are externally provided with inner jackets 14, fireproof rock wool 15 is filled between the insulating layers 13 and the inner jackets 14, the fireproof rock wool 15 can isolate external fire of the cable, the inner jackets 14 are polyvinyl chloride inner jackets with good flame retardance, steel tape armor is fixedly arranged on the outer surfaces of the inner jackets 14, the mechanical strength of the cable jackets can be improved through steel tape armor, the outer surface of each armor layer 16 is fixedly provided with an outer jacket 17, each outer jacket 17 is a ceramic silicon rubber outer jacket, residues on the outer jackets can prevent and treat the external fire of the cable, the ceramic silicon rubber outer jackets are hard ceramic shells, the hard fire-melting environments cannot cause the internal fire drop in the cable, and the inner cores cannot be prevented from being exposed, and the external fire condition of the cable is prevented from being dropped in the inner core.
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in a commodity or system comprising the element.
While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (7)
1. The utility model provides a compound fire prevention power cable, includes multiunit cable inner core (1), its characterized in that, cable inner core (1) surface is provided with fire-resistant mica tape (11), fire-resistant mica tape (11) surface is provided with double-deck shielding layer (12) around the package, the fixed surface of shielding layer (12) is provided with insulating layer (13), insulating layer (13) surface is provided with inner sheath (14), inner sheath (14) with fill between insulating layer (13) and be had fire prevention rock wool (15), the surface of inner sheath (14) is provided with armor (16), the surface of armor (16) is provided with oversheath (17).
2. A composite fire resistant power cable according to claim 1 wherein: the cable inner core (1) is formed by twisting a plurality of copper wires (2), and the copper wires (2) are all annealed oxygen-free copper wires.
3. A composite fire resistant power cable according to claim 1 wherein: the fire-resistant mica tape (11) is wrapped on the outer surface of the cable inner core (1) through multiple layers, and the thickness of the fire-resistant mica tape (11) wound in multiple layers is 0.5mm to 1.5mm.
4. A composite fire resistant power cable according to claim 1 wherein: the fire-resistant mica tape (11) is a synthetic fluorine gold mica tape.
5. A composite fire resistant power cable according to claim 1 wherein: the shielding layer (12) is a copper wire woven shielding net, the weaving mode of the shielding layer (12) is 128, and the insulating layer (13) is a crosslinked polyethylene insulating layer.
6. A composite fire resistant power cable according to claim 1 wherein: the inner sheath (14) is a polyvinyl chloride inner sheath, and the outer sheath (17) is a ceramic silicone rubber outer sheath.
7. A composite fire resistant power cable according to claim 1 wherein: the armor layer (16) is steel tape armor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320691921.1U CN219811361U (en) | 2023-03-31 | 2023-03-31 | Composite fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320691921.1U CN219811361U (en) | 2023-03-31 | 2023-03-31 | Composite fireproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219811361U true CN219811361U (en) | 2023-10-10 |
Family
ID=88208423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320691921.1U Active CN219811361U (en) | 2023-03-31 | 2023-03-31 | Composite fireproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219811361U (en) |
-
2023
- 2023-03-31 CN CN202320691921.1U patent/CN219811361U/en active Active
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| GR01 | Patent grant |