CN216487443U - Insulated wire and cable with excellent fire resistance - Google Patents
Insulated wire and cable with excellent fire resistance Download PDFInfo
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- CN216487443U CN216487443U CN202122991326.3U CN202122991326U CN216487443U CN 216487443 U CN216487443 U CN 216487443U CN 202122991326 U CN202122991326 U CN 202122991326U CN 216487443 U CN216487443 U CN 216487443U
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Abstract
The utility model discloses an insulated wire and cable with excellent fire resistance, relates to the technical field of fire-resistant cables, and aims to solve the problem that a common fire-resistant insulated cable in the prior art is not good enough in heat insulation effect. The fireproof insulated cable comprises a flame-retardant polyvinyl fluoride insulating outer sleeve, wherein a foaming polyurethane protective layer is arranged on the inner side of the flame-retardant polyvinyl fluoride insulating outer sleeve, the flame-retardant polyvinyl fluoride insulating outer sleeve is adhered with the foaming polyurethane protective layer through flame-retardant glue, a fluoroplastic insulating inner sleeve is arranged on the inner side of the foaming polyurethane protective layer, the fluoroplastic insulating inner sleeve is adhered with the foaming polyurethane protective layer through flame-retardant glue, a steel belt armor is arranged on the inner side of the fluoroplastic insulating inner sleeve, the steel belt armor is attached to the fluoroplastic insulating inner sleeve, a glass wire wrapping belt is arranged on the inner side of the steel belt armor, and the glass wire wrapping belt is attached to the steel belt armor.
Description
Technical Field
The utility model relates to the technical field of fire-resistant cables, in particular to an insulated wire and cable with excellent fire resistance.
Background
Fire-resistant cable means a cable that can be kept in operation safely for a certain period of time in the event of a flame burn. Fire-resistant cable is widely used in places such as high-rise buildings, underground railways, underground streets, large power stations and important industrial and mining enterprises which are related to fire safety and fire-fighting life saving, for example, power supply lines and control lines of emergency facilities such as fire-fighting equipment and emergency guide lamps, but the existing cable has some defects, such as:
for example, a cable with good fire-resistant and insulating properties, disclosed as CN107274979A, comprises a central hollow tube, a belting layer, an insulating layer, an inner sheath layer, an armor layer and an outer sheath layer, the outer side of the central hollow pipe is provided with a belting layer, conductor strands and control line conductors are arranged between the central hollow pipe and the belting layer, the number of the control line conductors is two, the conductor strands are uniformly distributed on the circumference of the central hollow pipe, the outer side of the belting layer is sequentially wrapped with an insulation layer, an inner protection layer, an armor layer and an outer protection layer, the armor layer is formed by embossing of a steel-plastic composite belt, the outer protection layer is formed by polymerizing waterproof halogen-free low-smoke irradiation crosslinking flame-retardant polyolefin, the outer surface of the outer protection layer is provided with four grooves, and the grooves are triangular.
The above prior art solutions have the following drawbacks: although the fire resistance level and the insulating capability of the cable can be improved, the fire-resistant material can ensure that the cable is not burnt through, the copper core of the cable can be continuously invaded by the temperature generated during combustion, the copper core of the cable is easily damaged by high temperature, and the heat insulation effect is not achieved.
We have proposed an insulated electric wire and cable having excellent fire resistance so as to solve the problems set forth above.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to an insulated wire and cable with excellent fire resistance, so as to solve the problem of insufficient heat insulation effect of the conventional fire-resistant insulated cable proposed in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an insulated wire and cable that fire resistance is outstanding, includes fire-resistant insulated cable, fire-resistant insulated cable is including hindering alkene polyvinyl fluoride insulating coat, the inboard of hindering alkene polyvinyl fluoride insulating coat is provided with the foaming polyurethane sheath, hinder alkene polyvinyl fluoride insulating coat and foaming polyurethane sheath and pass through fire-retardant type glue adhesion, the inboard of foaming polyurethane sheath is provided with fluoroplastics insulating endotheca, fluoroplastics insulating endotheca and foaming polyurethane sheath pass through fire-retardant type glue adhesion.
Preferably, a steel belt armor is arranged on the inner side of the fluoroplastic insulating inner sleeve, the steel belt armor is attached to the fluoroplastic insulating inner sleeve, a glass fiber wrapping tape is arranged on the inner side of the steel belt armor, and the glass fiber wrapping tape is attached to the steel belt armor.
Preferably, the inboard in glass silk band is provided with the aerogel filling layer, and glass silk band and aerogel filling layer pass through fire-retardant type glue adhesion.
Preferably, the inside of aerogel filling layer is provided with the crosslinked polyethylene insulating layer, the crosslinked polyethylene insulating layer laminates with the aerogel filling layer.
Preferably, a phenolic FRP fire-resistant layer is arranged on the inner side of the crosslinked polyethylene insulating layer, the phenolic FRP fire-resistant layer is attached to the crosslinked polyethylene insulating layer, a copper core is arranged on the inner side of the crosslinked polyethylene insulating layer, and the copper core is attached to the crosslinked polyethylene insulating layer.
Preferably, the mark knot is arranged on the outer side of the anti-alkene polyvinyl fluoride insulating outer sleeve, and the mark knot and the anti-alkene polyvinyl fluoride insulating outer sleeve are arranged into an integral structure.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model discloses a through the setting of foaming polyurethane sheath, foaming polyurethane sheath main material is foaming polyurethane, its coefficient of heat conductivity is only 0.024W/(m K), foaming polyurethane is cool with isocyanic acid, the polyol (combination polyether or poly cool) adds the bi-component that the additive constitutes as the main raw materials, the stereoplasm foam material that has adiabatic and waterproof function, but the thermal circulation of efficient separation, thereby the copper core of cable is invaded to high temperature when can preventing the burning, improve fireproof cable's thermal-insulated effect, improve fireproof cable life.
2. The utility model discloses a setting through phenolic aldehyde FRP flame retardant coating, phenolic aldehyde FRP flame retardant coating main material is phenolic resin, its biggest characteristics and breakthrough are exactly the recombination of resin system, form high reaction activity resin system, need not the solvent, can directly soak the substrate, spread the layer, the curing time is short, the curing condition is selectable, but normal atmospheric pressure solidification even, the advantage is that fire behaviour is good, the oxygen index is high, need not add the fire retardant, the oxygen index can be greater than 50, 2), the degree of fuming is low, the index of fuming is 7, 3), high temperature resistant, heat stability is good, the heat altered shape temperature is greater than 300 degrees, make this fire resisting cable environmental protection more, fire resistance is more outstanding.
Drawings
Fig. 1 is an overall view of an insulated wire cable having excellent fire resistance according to the present invention.
Fig. 2 is a front view of the insulated wire and cable of the present invention in a state of being wound up.
Fig. 3 is a vertical sectional view of an insulated wire and cable having excellent fire resistance according to the present invention.
In the figure: 1. a fire-resistant insulated cable; 2. a vinyl fluoride insulating outer sleeve; 3. a foamed polyurethane protective layer; 4. a fluoroplastic insulating inner sleeve; 5. steel band armor; 6. a glass fiber wrapping tape; 7. an aerogel packing layer; 8. a crosslinked polyethylene insulating layer; 9. phenolic FRP refractory layer; 10. a copper core; 11. and marking knots.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, an embodiment of the present invention is shown: the utility model provides an excellent insulated wire cable of fire resistance, includes fire-resistant insulated cable 1, fire-resistant insulated cable 1 is including hindering alkene polyvinyl fluoride insulating coat 2, hinders the inboard of alkene polyvinyl fluoride insulating coat 2 and is provided with foaming polyurethane sheath 3, hinders alkene polyvinyl fluoride insulating coat 2 and foaming polyurethane sheath 3 and passes through fire-retardant type glue adhesion, foaming polyurethane sheath 3's inboard is provided with fluoroplastics insulating inner cover 4, fluoroplastics insulating inner cover 4 and foaming polyurethane sheath 3 are through fire-retardant type glue adhesion.
Further, a steel belt armor 5 is arranged on the inner side of the inner fluoroplastic insulation sleeve 4, the steel belt armor 5 is attached to the inner fluoroplastic insulation sleeve 4, a glass fiber wrapping tape 6 is arranged on the inner side of the steel belt armor 5, the glass fiber wrapping tape 6 is attached to the steel belt armor 5, and the inner fluoroplastic insulation sleeve 4 can bear high temperature of two hundred sixty degrees centigrade.
Further, the inner side of the glass fiber wrapping tape 6 is provided with an aerogel filling layer 7, the glass fiber wrapping tape 6 is adhered to the aerogel filling layer 7 through flame-retardant glue, the heat conductivity coefficient of the aerogel filling layer 7 is only 0.02W/(m.K), and the type of the flame-retardant glue is LDJ-243-2 adhesive.
Further, the inboard of aerogel filling layer 7 is provided with crosslinked polyethylene insulating layer 8, and crosslinked polyethylene insulating layer 8 can bear ninety degrees centigrade high temperature with the laminating of aerogel filling layer 7, crosslinked polyethylene insulating layer 8.
Further, a phenolic FRP fire-resistant layer 9 is arranged on the inner side of the crosslinked polyethylene insulating layer 8, the phenolic FRP fire-resistant layer 9 is attached to the crosslinked polyethylene insulating layer 8, a copper core 10 is arranged on the inner side of the crosslinked polyethylene insulating layer 8, the copper core 10 is attached to the crosslinked polyethylene insulating layer 8, and the phenolic FRP is also called as second-generation phenolic resin.
Further, the mark knots 11 are arranged on the outer side of the vinyl fluoride insulation outer sleeve 2, the mark knots 11 and the vinyl fluoride insulation outer sleeve 2 are arranged into an integral structure, and the distance between every two mark knots 11 is one meter.
The working principle is as follows: when the cable is used, the fire-resistant insulated cable 1 carries out electric power transmission through the copper core 10, the length of the fire-resistant insulated cable 1 can be judged through the mark knot 11, the cable is convenient to cut and use, the phenolic FRP fire-resistant layer 9 is arranged on the outer side of the copper core 10 and has the functions of fire resistance and fire retardation, flame is prevented from being directly burnt to the copper core 10, the cable is a last defense line of the whole fire-resistant insulated cable 1, the crosslinked polyethylene insulating layer 8 is arranged on the outer side of the phenolic FRP fire-resistant layer 9 and is used for insulation and avoiding electric leakage, the crosslinked polyethylene insulating layer 8 is wrapped by the aerogel filling layer 7, the heat conductivity coefficient of the aerogel filling layer 7 is 0.02W/(m.K), high temperature can be effectively blocked, the copper core 10 is used for heat insulation, the first defense line of the whole fire-resistant insulated cable 1 is composed of the alkene-resistant polyvinyl fluoride insulating outer sleeve 2, the foamed polyurethane protective layer 3, the armor insulating inner sleeve 4, the steel belt armor 5 and the glass fiber 6, the insulating outer sleeve 2 of the flame-retardant polyvinyl fluoride is the outermost side and is directly contacted with flame, the heat resistance is highest, and the steel belt armor 5 is used for improving the rigidity of the whole structure of the fire-resistant insulating cable 1.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. An insulated wire and cable excellent in fire resistance, comprising a fire-resistant insulated cable (1), characterized in that: fire-resistant insulated cable (1) is including hindering alkene polyvinyl fluoride insulating coat (2), the inboard of hindering alkene polyvinyl fluoride insulating coat (2) is provided with foaming polyurethane sheath (3), hinder alkene polyvinyl fluoride insulating coat (2) and foaming polyurethane sheath (3) through fire-retardant type glue adhesion, the inboard of foaming polyurethane sheath (3) is provided with fluoroplastics insulating inner sleeve (4), fluoroplastics insulating inner sleeve (4) and foaming polyurethane sheath (3) are through fire-retardant type glue adhesion.
2. The insulated wire and cable with excellent fire resistance according to claim 1, wherein: the inner side of the fluoroplastic insulating inner sleeve (4) is provided with a steel belt armor (5), the steel belt armor (5) is attached to the fluoroplastic insulating inner sleeve (4), the inner side of the steel belt armor (5) is provided with a glass fiber belting (6), and the glass fiber belting (6) is attached to the steel belt armor (5).
3. The insulated wire and cable with excellent fire resistance according to claim 2, wherein: the inner side of the glass fiber wrapping tape (6) is provided with an aerogel filling layer (7), and the glass fiber wrapping tape (6) is adhered to the aerogel filling layer (7) through flame-retardant glue.
4. The insulated wire and cable with excellent fire resistance according to claim 3, wherein: the inside of aerogel filling layer (7) is provided with crosslinked polyethylene insulating layer (8), crosslinked polyethylene insulating layer (8) and aerogel filling layer (7) laminating.
5. The insulated wire and cable with excellent fire resistance according to claim 4, wherein: the phenolic FRP fire-resistant layer (9) is arranged on the inner side of the crosslinked polyethylene insulating layer (8), the phenolic FRP fire-resistant layer (9) is attached to the crosslinked polyethylene insulating layer (8), the copper core (10) is arranged on the inner side of the crosslinked polyethylene insulating layer (8), and the copper core (10) is attached to the crosslinked polyethylene insulating layer (8).
6. The insulated wire and cable with excellent fire resistance according to claim 1, wherein: the outside of hindering alkene polyvinyl fluoride insulating coat (2) is provided with mark knot (11), mark knot (11) set up structure as an organic whole with hindering alkene polyvinyl fluoride insulating coat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122991326.3U CN216487443U (en) | 2021-12-01 | 2021-12-01 | Insulated wire and cable with excellent fire resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122991326.3U CN216487443U (en) | 2021-12-01 | 2021-12-01 | Insulated wire and cable with excellent fire resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216487443U true CN216487443U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122991326.3U Active CN216487443U (en) | 2021-12-01 | 2021-12-01 | Insulated wire and cable with excellent fire resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216487443U (en) |
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2021
- 2021-12-01 CN CN202122991326.3U patent/CN216487443U/en active Active
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