CN222546003U - A mineral insulated B1 class cable - Google Patents
A mineral insulated B1 class cable Download PDFInfo
- Publication number
- CN222546003U CN222546003U CN202421292044.1U CN202421292044U CN222546003U CN 222546003 U CN222546003 U CN 222546003U CN 202421292044 U CN202421292044 U CN 202421292044U CN 222546003 U CN222546003 U CN 222546003U
- Authority
- CN
- China
- Prior art keywords
- mineral
- cable
- wire cores
- layer
- insulated
- 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.)
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Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 71
- 239000011707 mineral Substances 0.000 title claims abstract description 71
- 239000010410 layer Substances 0.000 claims abstract description 46
- 238000009413 insulation Methods 0.000 claims abstract description 34
- 239000011241 protective layer Substances 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- 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 15
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 7
- 230000009970 fire resistant effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 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
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 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 relates to the technical field of insulated cables, and provides a mineral insulated B1-level cable which comprises a plurality of mineral insulated wire cores, wherein the mineral insulated wire cores are spirally wound, the outer layers of the mineral insulated wire cores are covered with composite protective layers, the mineral insulated wire cores comprise a plurality of strands of conductors, and the outer layers of the plurality of strands of conductors are covered with a mineral insulating layer and a flame retardant layer in sequence. The mineral insulation B1-class cable disclosed by the utility model can simultaneously have good conductivity and stability of the cable, and mineral insulation and flame retardance of the cable in buildings, industrial equipment and the like.
Description
Technical Field
The utility model relates to the technical field of insulated cables, in particular to a mineral insulated B1-level cable.
Background
The mineral insulated cable is a power cable, and an insulating layer of the mineral insulated cable adopts a mineral insulated material instead of a traditional plastic or rubber material, and common mineral insulated materials comprise rock wool, aluminum silicate and the like, and the mineral insulated cable has good fire resistance and flame retardance, can be kept stable at high temperature, and can effectively prevent fire spread. Further, according to GBT 19666-2019 general rules of flame-retardant and fire-resistant electric wires and cables or optical cables, the flame-retardant grade of the cable is classified into ZA, ZB, ZC, ZD grades, and GB 31247-2014 general rules of flame performance of the cable is classified into A, B, B2 and the flame-retardant grade of the cable does not reach the B2 grades. The B1-level cable has higher flame retardant property, can slow down fire spread when a fire disaster occurs, improves fire disaster safety of buildings and facilities, and is commonly used for the buildings, industrial facilities and the like.
The patent with the publication number of CN220604360U provides a mineral insulation B1-level cable, which comprises a plurality of wire cores and a sheath for wrapping the wire cores, and is characterized in that the structure of the wire cores is sequentially provided with a conductor, a protective layer, a mineral insulation layer, a first fire-proof layer and an inner protective layer from inside to outside, a filler is arranged in a gap between the wire cores, and a second fire-proof layer and an outer protective layer from inside to outside.
However, the conventional mineral insulated cable as described above has problems in that either the conductive effect of the cable is unstable or the mineral insulation or flame retardant effect of the cable is poor. Thus, there is a need for a cable with good mineral insulation and flame retardant properties and stable electrical conductivity.
Disclosure of utility model
The utility model aims to solve the problems that the traditional mineral insulated cable is unstable in conductive effect or poor in mineral insulation or flame retardant effect. The utility model provides a mineral insulation B1-level cable, which can simultaneously have good conductivity and stability of the cable, and mineral insulation and flame retardance of the cable in buildings, industrial equipment and the like.
The utility model is realized by the following technical scheme:
The mineral insulation B1-level cable comprises a plurality of mineral insulation wire cores, wherein the mineral insulation wire cores are spirally wound, the outer layers of the mineral insulation wire cores are covered with composite protective layers, the mineral insulation wire cores comprise a plurality of strands of conductors, and the outer layers of the plurality of strands of conductors are covered with a mineral insulation layer and a flame retardant layer in sequence.
Further, the outer side wall surfaces of every two adjacent mineral insulated wire cores are abutted to enable the sections of the mineral insulated wire cores to be in a circumferential shape, and the axes of the mineral insulated wire cores are penetrated with wires.
Further, the periphery of the wire is wrapped with a heat insulation layer.
Further, fillers are arranged between the plurality of mineral insulation wire cores and the composite protective layer, and between the multi-strand conductor and the mineral insulation layer.
Further, along the direction from the axis of the cable to the outer layer, the composite protective layer comprises a first protective layer, a fireproof insulating layer, an armor layer and a second protective layer which are sequentially arranged.
Further, an armor layer is also sandwiched between the first protective layer and the fireproof insulating layer.
The technical scheme of the utility model has the following beneficial effects:
According to the mineral insulation B1-level cable, the conductor of the cable and the structure of the coating layer such as the protective material arranged outside the conductor are improved, so that the manufactured cable can simultaneously have good conductivity and stability of the cable, and the mineral insulation and flame retardance of the cable in buildings, industrial equipment and the like, and has better environmental adaptability and longer service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional structural view of a mineral insulated B1-stage cable in example 1;
Fig. 2 is a schematic cross-sectional structure of the mineral insulated wire core in embodiment 1.
The illustration is 11-stranded conductor, 12-mineral insulation, 13-flame retardant, 14-wire, 15-insulation, 2-filler, 31-first protective layer, 32-fire-resistant insulation, 33-armor, 34-second protective layer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Example 1
As shown in fig. 1 to 2, the embodiment provides a mineral insulated B1-level cable, which comprises a plurality of mineral insulated wire cores, wherein the mineral insulated wire cores are spirally wound, a composite protective layer is wrapped on the outer layers of the mineral insulated wire cores, the mineral insulated wire cores comprise a plurality of strands of conductors 11, and a mineral insulating layer 12 and a flame retardant layer 13 are sequentially wrapped on the outer layers of the plurality of strands of conductors 11.
The stranded conductor 11 is a stranded wire 14, which is prevented from loosening, so as to maintain the stability of the conductive performance of the cable.
In this embodiment, the outer side wall surfaces of every two adjacent mineral insulated wire cores are abutted to each other, so that the sections of the mineral insulated wire cores are in a circumferential shape, and the axes of the mineral insulated wire cores are penetrated with the wires 14.
In this embodiment, the outer periphery of the wire 14 is covered with a heat insulating layer 15.
In this embodiment, the mineral insulating layer 12 may be made of a mica material with good comprehensive electrical insulation performance, the flame-retardant layer 13 is made of a fireproof silicon micropowder material, sodium silicate is added to the mixture, stirring and mixing are performed to form a colloid, the colloid is wrapped on the outer surface of the mineral insulating layer 12 of the multi-strand conductor 11 by using extrusion equipment and the like, the flame-retardant effect is exerted by isolating oxygen, and the heat-insulating layer 15 is made of a crosslinked polyethylene material and has excellent heat resistance, insulation performance and chemical corrosion resistance.
In the embodiment, a filler 2 is arranged between a plurality of mineral insulated wire cores and the composite protective layer, a high flame retardant filling rope is adopted, and the filler 2 is also arranged between the multi-strand conductor 11 and the mineral insulated layer 12, and the filler 2 is flexible.
In this embodiment, along the direction from the axis of the cable to the outer layer, the composite protective layer includes a first protective layer 31, an armor layer 33, a fireproof insulating layer 32, an armor layer 33, and a second protective layer 34, which are sequentially wrapped.
In this embodiment, the protective layer may be made of halogen-free low-smoke flame-retardant B1-grade polyolefin material, the armor layer 33 may be made of galvanized steel strip or stainless steel strip, etc., and the fireproof insulating layer 32 may be made of mineral insulating material with good fireproof performance such as rock wool and aluminum silicate.
In the embodiment, the mineral insulation B1-level cable is improved in the structure of the conductor of the cable and the coating layers such as the protective material arranged outside the conductor, so that the manufactured cable can simultaneously have good conductivity and stability of the cable, and can still maintain the B1-level mineral insulation cable performance standard required by GB 31247-2014 'cable and optical cable combustion performance grading', the mineral insulation and flame retardance of the cable in buildings or industrial equipment and the like after long-time use, and the cable has better environmental adaptability and longer service life.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The mineral insulation B1-level cable is characterized by comprising a plurality of mineral insulation wire cores, wherein the mineral insulation wire cores are spirally wound, and the outer layers of the mineral insulation wire cores are coated with composite protective layers;
The mineral insulation wire core comprises a plurality of strands of conductors (11), and the outer layers of the strands of conductors (11) are sequentially coated with a mineral insulation layer (12) and a flame retardant layer (13).
2. The mineral-insulated B1-stage cable according to claim 1, wherein outer side wall surfaces of each adjacent two mineral-insulated wire cores are abutted so that the sections of the plurality of mineral-insulated wire cores are in a circumferential shape;
the axes of the mineral insulated wire cores are penetrated with wires (14).
3. The mineral insulated B1 cable according to claim 2, characterized in that the conductor (14) is peripherally covered with a heat insulating layer (15).
4. The mineral insulated B1 cable according to claim 1, characterized in that a filler (2) is arranged between the several mineral insulated wire cores and the composite protective layer, and between the multi-strand conductor (11) and the mineral insulating layer (12).
5. The mineral insulated B1 cable according to any one of claims 1 to 4, wherein the composite protective layer comprises a first protective layer (31), a fireproof insulating layer (32), an armor layer (33), and a second protective layer (34) which are sequentially arranged along the direction from the axis of the cable to the outer layer.
6. The mineral insulated B1 cable according to claim 5, characterized in that an armour layer (33) is also sandwiched between the first protective layer (31) and the fire-resistant insulating layer (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421292044.1U CN222546003U (en) | 2024-06-06 | 2024-06-06 | A mineral insulated B1 class cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421292044.1U CN222546003U (en) | 2024-06-06 | 2024-06-06 | A mineral insulated B1 class cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222546003U true CN222546003U (en) | 2025-02-28 |
Family
ID=94721336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421292044.1U Active CN222546003U (en) | 2024-06-06 | 2024-06-06 | A mineral insulated B1 class cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222546003U (en) |
-
2024
- 2024-06-06 CN CN202421292044.1U patent/CN222546003U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |