CN219759255U - Fire-resistant cable - Google Patents
Fire-resistant cable Download PDFInfo
- Publication number
- CN219759255U CN219759255U CN202320946772.9U CN202320946772U CN219759255U CN 219759255 U CN219759255 U CN 219759255U CN 202320946772 U CN202320946772 U CN 202320946772U CN 219759255 U CN219759255 U CN 219759255U
- Authority
- CN
- China
- Prior art keywords
- fire
- resistant
- fire resistant
- coating
- insulating layer
- 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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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 72
- 239000011248 coating agent Substances 0.000 claims abstract description 41
- 238000000576 coating method Methods 0.000 claims abstract description 41
- 238000000465 moulding Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 12
- 239000011261 inert gas Substances 0.000 claims description 7
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 238000005253 cladding Methods 0.000 abstract 2
- 239000002861 polymer material Substances 0.000 description 7
- 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 5
- 239000003063 flame retardant Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 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
- 239000003973 paint Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a fire-resistant cable, comprising: the glass binding belt, the sheath, the outer insulating layer and the outer fireproof coating are arranged in the core area; a glass binding belt is wound outside the core area; an outer insulating layer is arranged outside the glass binding band; a sheath is arranged outside the outer insulating layer; an outer refractory coating is arranged outside the sheath. Through setting up fire-resistant moulding strip between arbitrary two adjacent wires, this strip structure can fill, support adjacent wire on the one hand to can buckle along with the wire according to the direction shape, on the other hand can realize comprehensive cladding to the wire again, and utilize moulding strip own material characteristic increase the fire-resistant cladding material thickness outside the wire in the cable, effectively prolong the fire-resistant time of fire-resistant cable.
Description
Technical Field
The utility model relates to the technical field of cable production, in particular to a fire-resistant cable.
Background
The existing fire-resistant cable structure mainly achieves the effect of fire resistance or high temperature resistance in a certain time by coating and arranging a plurality of fire-resistant material layers or fire-resistant paint on the outer side of a wire.
Among a plurality of wires in the existing fire-resistant cable, the filling material does not have the effect of high temperature resistance or fire resistance, so that the fire-resistant time of the existing fire-resistant cable is shorter.
Disclosure of Invention
The utility model aims at the technical problems and provides a fire-resistant cable which is used for solving the technical problems of poor fire resistance of filling materials between wires and short fire-resistant time of the cable in the prior art.
The utility model provides a fire resistant cable comprising: the glass binding belt, the sheath, the outer insulating layer and the outer fireproof coating are arranged in the core area;
a glass binding belt is wound outside the core area;
an outer insulating layer is arranged outside the glass binding band;
a sheath is arranged outside the outer insulating layer;
an outer refractory coating is arranged outside the sheath;
the core region includes: the wire comprises a plurality of wires, an inner insulating layer, a main fire-resistant molding strip and an auxiliary fire-resistant molding strip, wherein the outer wall of the wires is provided with the inner insulating layer; an inner refractory coating is arranged on the inner insulating layer;
a main fire-resistant molding strip is inserted between any two adjacent wires;
auxiliary fire-resistant molding strips are inserted in gaps among the main fire-resistant molding strips.
Preferably, the main fire-resistant molding strip is made of flame-retardant high polymer material through injection molding.
Preferably, the auxiliary fire-resistant molding strip is formed by injection molding of a flame-retardant high polymer material.
Preferably, the outer refractory coating is any one of a foamed fire-resistant coating, a nitrogen-containing fire-resistant coating, or an inert gas fire-resistant coating.
Preferably, the inner refractory coating is any one of a foamed fire-resistant coating, a nitrogen-containing fire-resistant coating, or an inert gas fire-resistant coating.
Preferably, an auxiliary fire-resistant molding strip is inserted in the center surrounded by the plurality of wires.
The utility model has the beneficial effects that:
1) According to the fire-resistant cable provided by the utility model, the fire-resistant molding strips are arranged between any two adjacent wires, so that the strip-shaped structure can be used for filling and supporting the adjacent wires and bending along with the wires according to the guiding shape, and can be used for comprehensively coating the wires, and the thickness of fire-resistant coating materials outside the wires in the cable is increased by utilizing the material characteristics of the molding strips, so that the fire-resistant time of the fire-resistant cable is effectively prolonged.
Drawings
FIG. 1 is a schematic diagram of a fire-resistant cable in front cross-section;
legend description:
4. a glass binding belt; 1. an outer refractory coating; 2. a sheath; 3. an outer insulating layer; 5. a main fire-resistant molding strip; 51. auxiliary fire-resistant molding strips; 6. a wire; 62. an inner insulating layer; 61. an inner refractory coating.
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. 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, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
The technical means which are not described in detail and are not used for solving the technical problems of the utility model are all arranged according to common general knowledge in the field, and various common general knowledge arrangement modes can be realized.
Referring to fig. 1, the fire-resistant cable provided by the present utility model includes: the plurality of wires 6, the inner insulating layer 62 material is wound on the outer wall of each wire 6 at first, so as to realize the insulating effect of the wires 6 and serve as the first protection for avoiding electric leakage; an inner refractory coating 61 is arranged on the outer wall of the inner insulating layer 62 material of each wire 6, and the refractory capability of each wire 6 can be improved by adopting refractory coating.
After the above winding and brushing operations are performed on the wires 6, the primary flame-retardant molding strip 5 and the secondary flame-retardant molding strip 51 are inserted between the wires 6 in the core region, and then the binding operation is performed. The glass binding belt 4 is arranged in the core area in a winding manner outside each wire 6, and the shape of the core area is fixed and the fastening effect is realized. The fire-resistant molding strips are arranged between the wires 6 to prolong the normal power supply time of the wires 6 under the conditions of high temperature and fire, and prolong the required time for rush repair after the fire.
The main fire-resistant molding strip 5 and the auxiliary fire-resistant molding strip 51 are made of flame-retardant polymer materials through injection molding.
The fire-resistant molding strip is made of high polymer materials through extrusion injection molding, the high polymer materials are good in flexibility, the original shapes are kept after extrusion, effective protection of the wires 6 can be achieved, and meanwhile fire-resistant materials are added in the high polymer materials before injection molding in a mixing stage, so that fire-resistant effects of the materials are achieved. The fire-resistant molding strip has elasticity and can bear certain deformation, and the cross section shape of the used die is approximate to the shape of the cable cross section gap.
The added refractory material powder can be mica powder, composite inorganic mineral powder and other materials. The polymer material of the fire-resistant molding strip can be EVA and LLDPE which are mixed and then mixed.
The outer refractory coating 1, the inner refractory coating 61 is any one of a foaming fireproof coating, a nitrogen-containing fireproof coating, or an inert gas fireproof coating.
The foaming fireproof coating can realize expansion and foaming of the coating after being heated, and form a carbon foam heat insulation layer to seal and protect the cable.
The nitrogen-containing fireproof coating can realize the generation of NO and NH by thermal decomposition 3 The chain reaction is interrupted to realize the protection of the cable.
The inert gas fireproof coating can be decomposed after being heated to generate nonflammable inert gas so as to isolate and protect the gas around the cable.
The glass binding belt 4 outside the core area is sequentially provided with an outer insulating layer 3, a sheath 2 and an outer fireproof coating 1 from inside to outside to form a fireproof cable, and the cable is protected under the conditions of high temperature and fire.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. A fire resistant cable comprising: the glass binding belt, the sheath, the outer insulating layer and the outer fireproof coating are arranged in the core area;
a glass binding belt is wound outside the core area;
an outer insulating layer is arranged outside the glass binding band;
a sheath is arranged outside the outer insulating layer;
an outer refractory coating is arranged outside the sheath;
the core region includes: the wire comprises a plurality of wires, an inner insulating layer, a main fire-resistant molding strip and an auxiliary fire-resistant molding strip, wherein the outer wall of the wires is provided with the inner insulating layer; an inner refractory coating is arranged on the inner insulating layer;
a main fire-resistant molding strip is inserted between any two adjacent wires;
auxiliary fire-resistant molding strips are inserted in gaps among the main fire-resistant molding strips.
2. The fire resistant cable according to claim 1, wherein the main fire resistant molding bar is injection molded of a fire resistant polymeric material.
3. The fire resistant cable according to claim 1, wherein the secondary fire resistant molding strip is injection molded of a fire resistant polymeric material.
4. The fire resistant cable according to claim 1, wherein the outer fire resistant coating is any one of a foamed fire resistant coating, a nitrogen containing fire resistant coating or an inert gas fire resistant coating.
5. The fire resistant cable according to claim 1, wherein the inner fire resistant coating is any one of a foamed fire resistant coating, a nitrogen containing fire resistant coating or an inert gas fire resistant coating.
6. The fire resistant cable according to claim 1, wherein an auxiliary fire resistant molding strip is inserted around the center of the plurality of wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320946772.9U CN219759255U (en) | 2023-04-24 | 2023-04-24 | Fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320946772.9U CN219759255U (en) | 2023-04-24 | 2023-04-24 | Fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219759255U true CN219759255U (en) | 2023-09-26 |
Family
ID=88072806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320946772.9U Active CN219759255U (en) | 2023-04-24 | 2023-04-24 | Fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219759255U (en) |
-
2023
- 2023-04-24 CN CN202320946772.9U patent/CN219759255U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |