CN221079645U - Super-flexible fire-resistant medium-voltage cable - Google Patents
Super-flexible fire-resistant medium-voltage cable Download PDFInfo
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- CN221079645U CN221079645U CN202322485879.0U CN202322485879U CN221079645U CN 221079645 U CN221079645 U CN 221079645U CN 202322485879 U CN202322485879 U CN 202322485879U CN 221079645 U CN221079645 U CN 221079645U
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- layer
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- voltage cable
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- shielding layer
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 26
- 239000011490 mineral wool Substances 0.000 claims abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 10
- 239000004800 polyvinyl chloride Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 238000009954 braiding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 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 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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 discloses an ultra-soft fire-resistant medium voltage cable, which comprises at least one wire; the first fire-resistant layer is spirally wound on the outer wall of the lead; the first shielding layer is coated outside the first refractory layer; the first insulating layer is coated outside the first shielding layer; and rock wool is filled in a gap between the sheath and the first insulating layer. The beneficial effects of the utility model are as follows: according to the technical scheme, through the optimal design and the new structure and the new process matched with the new structure, the cable is ensured to have considerable fire resistance and considerable flexible data.
Description
Technical Field
The utility model relates to a medium voltage cable, in particular to an ultra-soft fire-resistant medium voltage cable.
Background
The power cable is a cable for transmitting and distributing electric energy, and is commonly used for urban underground power grids, outgoing lines of power stations, large enterprises and the like. The high-voltage cable can be divided into a medium-voltage cable, a low-voltage cable (35 kilovolts or less), a high-voltage cable (110 kilovolts or more), an ultrahigh-voltage cable (275-800 kilovolts) and an extra-high voltage cable (1000 kilovolts or more) according to voltage grades. With the increase of electricity load for economic development and the improvement of people's fire prevention and safety consciousness, domestic petrochemical enterprises and key engineering projects are gradually increasing the demands on the current carrying capacity and the environment-friendly flame retardant fire resistance of the medium voltage cable, but the current cable can lead to insufficient current carrying capacity and fire resistance of the cable due to technical or external force reasons, so that the service life of the cable is shortened, once the cable encounters a fire disaster, an insulating layer of the cable is easy to burn, gas harmful to human bodies is generated, and meanwhile, under some special use conditions, the cable also has considerable flexibility requirements, so that an ultra-soft flame retardant medium voltage cable has to be developed, and the same technical scheme as the utility model is not found through searching.
Disclosure of utility model
The technical problem to be solved by the utility model is to provide an ultra-flexible fire-resistant medium voltage cable, which solves one or more of the above prior art problems.
In order to solve the technical problems, the utility model adopts a technical scheme that: an ultra-soft fire-resistant medium voltage cable is characterized in that: comprising
At least one wire;
the first fire-resistant layer is spirally wound on the outer wall of the lead;
The first shielding layer is coated outside the first refractory layer;
The first insulating layer is coated outside the first shielding layer;
And rock wool is filled in a gap between the sheath and the first insulating layer.
In some embodiments, when the wires are equal to or more than 2, all of the wires are wound together to form a twisted wire assembly, the wire assembly being externally helically wound with a second refractory layer.
In some embodiments, a second shielding layer is further arranged between the sheath and the rock wool, and the second shielding layer is attached to the inner wall of the sheath.
In some embodiments, the sheath is a polyvinylchloride sheath having alumina particles or alumina powder uniformly distributed within the interior of the polyvinylchloride sheath.
In some embodiments, the wire is composed of several pure oxygen-free copper wires.
In some embodiments, the first refractory layer and the second refractory layer are both mica tapes.
In some embodiments, the first and second shielding layers are both tinned copper wire braid.
The beneficial effects of the utility model are as follows: according to the technical scheme, through the optimal design and the new structure and the new process matched with the new structure, the cable is ensured to have considerable fire resistance and considerable flexible data.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
Fig. 1 is a schematic structural view of example 1 of an ultra-flexible fire-resistant medium voltage cable according to the present utility model.
Fig. 2 is a schematic structural view of example 2 of an ultra-flexible fire-resistant medium voltage cable according to the present utility model.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments 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
As shown in fig. 1, an embodiment of the present utility model includes:
An ultra-flexible fire-resistant medium voltage cable comprises a wire 100; a first refractory layer 200, the first refractory layer 200 being spirally wound on the outer wall of the wire 100; a first shielding layer 300, wherein the first shielding layer 300 is coated outside the first refractory layer 200; a first insulating layer 400, the first insulating layer 400 being coated on the outside of the first shielding layer 300; the sheath 700, the space between sheath 700 and the first insulating layer 400 is filled with rock wool 500, and the filler in the space between sheath 700 and the first insulating layer 400 of this technical scheme adopts rock wool 500, gives attention to fire resistance and flexibility.
In this embodiment, a second shielding layer 600 is further disposed between the sheath 700 and the rock wool 500, where the second shielding layer 600 is attached to the inner wall of the sheath 700, and in this technical solution, by using the shielding layers of the inner layer and the outer layer, when the electric wire passes through a large current, the magnetic field generated by the electric wire is shielded inside the cable, so that the peripheral components are not greatly affected, and the peripheral components are protected; the sheath 700 is a polyvinyl chloride sheath 700, alumina particles or alumina powder are uniformly distributed in the interior of the polyvinyl chloride sheath 700, and the technical scheme is that the sheath 700 is firstly made of polyvinyl chloride with stronger fire resistance, and alumina particles or alumina powder are doped in the sheath to further submit fire resistance, and meanwhile, the flexibility of the sheath 700 is not affected due to gaps among the alumina particles or the alumina powder; the wire 100 is formed by combining a plurality of pure oxygen-free copper wires, and the pure oxygen-free copper wires in the technical scheme have good flexibility; the first fire resistant layer 200 and the second fire resistant layer are both mica tapes, and the first fire resistant layer 200 in the technical scheme adopts the mica tapes, so that the high-temperature fire resistance is ensured, and the overall flexibility of the cable is not influenced; the first shielding layer 300 and the second shielding layer 600 are both tinned copper wire braiding layers, and the tinned copper wire braiding layers are adopted as shielding layers in the technical scheme, so that the shielding effect is excellent and the flexibility is considered.
In this embodiment
Example 2
As shown in fig. 2, an embodiment of the present utility model includes:
an ultra-flexible fire resistant medium voltage cable comprising
At least one wire 100;
a first refractory layer 200, the first refractory layer 200 being spirally wound on the outer wall of the wire 100;
A first shielding layer 300, wherein the first shielding layer 300 is coated outside the first refractory layer 200;
a first insulating layer 400, the first insulating layer 400 being coated on the outside of the first shielding layer 300;
and a sheath 700, wherein rock wool 500 is filled in a gap between the sheath 700 and the first insulating layer 400.
In this embodiment, when the number of wires 100 is equal to or more than 2, all the wires 100 are wound together to form a twisted wire 100 assembly, and a second refractory layer is spirally wound on the outside of the wire 100 assembly; a second shielding layer 600 is further arranged between the sheath 700 and the rock wool 500, and the second shielding layer 600 is attached to the inner wall of the sheath 700; the sheath 700 is a polyvinyl chloride sheath 700, alumina particles or alumina powder are uniformly distributed in the interior of the polyvinyl chloride sheath 700, and the technical scheme is that the sheath 700 is firstly made of polyvinyl chloride with stronger fire resistance, and alumina particles or alumina powder are doped in the sheath to further submit fire resistance, and meanwhile, the flexibility of the sheath 700 is not affected due to gaps among the alumina particles or the alumina powder; the wire 100 is formed by combining a plurality of pure oxygen-free copper wires, and the pure oxygen-free copper wires in the technical scheme have good flexibility; the first fire resistant layer 200 and the second fire resistant layer are all mica tapes, and the first fire resistant layer 200 and the second fire resistant layer in the technical scheme are all mica tapes, so that the high-temperature fire resistance is ensured, and the overall flexibility of the cable is not influenced; the first shielding layer 300 and the second shielding layer 600 are both tinned copper wire braiding layers, and the tinned copper wire braiding layers are adopted as shielding layers in the technical scheme, so that the shielding effect is excellent and the flexibility is considered.
According to the technical scheme, through the optimal design and the new structure and the new process matched with the new structure, the cable is ensured to have considerable fire resistance and considerable flexible data.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (7)
1. An ultra-flexible fire-resistant medium voltage cable, which is characterized in that: comprising
At least one wire (100);
the first refractory layer (200) is spirally wound on the outer wall of the wire (100);
A first shielding layer (300), wherein the first shielding layer (300) is coated on the outer part of the first refractory layer (200);
a first insulating layer (400), the first insulating layer (400) being coated on the outside of the first shielding layer (300);
And the sheath (700) is filled with rock wool (500) in a gap between the sheath (700) and the first insulating layer (400).
2. An ultra-flexible fire resistant medium voltage cable according to claim 1, wherein: when the number of the wires (100) is equal to or more than 2, all the wires (100) are wound together to form a twisted wire (100) assembly, and a second refractory layer is spirally wound outside the wire (100) assembly.
3. An ultra-flexible fire resistant medium voltage cable according to claim 1, wherein: a second shielding layer (600) is further arranged between the sheath (700) and the rock wool (500), and the second shielding layer (600) is attached to the inner wall of the sheath (700).
4. An ultra-flexible fire resistant medium voltage cable according to claim 1, wherein: the sheath (700) is a polyvinyl chloride sheath (700), and alumina particles or alumina powder are uniformly distributed in the interior of the polyvinyl chloride sheath (700).
5. An ultra-flexible fire resistant medium voltage cable according to claim 1, wherein: the wire (100) is formed by combining a plurality of pure oxygen-free copper wires.
6. An ultra-flexible fire resistant medium voltage cable according to claim 1, wherein: the first refractory layer (200) and the second refractory layer are both mica tapes.
7. An ultra-flexible fire resistant medium voltage cable according to claim 1, wherein: the first shielding layer (300) and the second shielding layer (600) are both tinned copper wire braiding layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322485879.0U CN221079645U (en) | 2023-09-12 | 2023-09-12 | Super-flexible fire-resistant medium-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322485879.0U CN221079645U (en) | 2023-09-12 | 2023-09-12 | Super-flexible fire-resistant medium-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221079645U true CN221079645U (en) | 2024-06-04 |
Family
ID=91255097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322485879.0U Active CN221079645U (en) | 2023-09-12 | 2023-09-12 | Super-flexible fire-resistant medium-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221079645U (en) |
-
2023
- 2023-09-12 CN CN202322485879.0U patent/CN221079645U/en active Active
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