CN203746536U - Mineral insulated fireproof cable - Google Patents
Mineral insulated fireproof cable Download PDFInfo
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- CN203746536U CN203746536U CN201320886288.8U CN201320886288U CN203746536U CN 203746536 U CN203746536 U CN 203746536U CN 201320886288 U CN201320886288 U CN 201320886288U CN 203746536 U CN203746536 U CN 203746536U
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- cable
- mineral
- mineral insulated
- inner core
- insulated
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Abstract
The utility model discloses a mineral insulated fireproof cable. The mineral insulated fireproof cable includes an inner core and an outer layer wrapping the inner core; an inorganic mineral filler is filled between the inner core and the outer layer; the inner core comprises at least two insulated wire cores which are mutually insulated from each other; the insulated wire core comprises at least two conducting wire cores and an insulating layer wrapping the at least two conductive wire cores; and the outer layer is provided with an inorganic insulating wrapping tape, an inner meta sheath, an isolation layer and an outer sheath which are arranged from inside to outside. When being combusted, the mineral insulated fireproof cable does not release harmful gases, so that a secondary disaster can be avoided; the inorganic insulating wrapping tape, the inorganic mineral filler and the insulating layers can absorb a large quantity of heat, and can form a carbon shell layer so as to isolate air, so that the supply of oxygen and the flow of combustible gases can be hindered, and therefore, the insulating layers can be protected from being combusted, and further combustion of the cable can be avoided. The mineral insulated fireproof cable of the utility model is mainly suitable for items of which the rated voltage is 1000V or below.
Description
Technical field
The utility model relates to a kind of fireproof cable, relates in particular to a kind of mineral insulated cable.
Background technology
Along with the fast development of national economy and improving constantly of living standards of the people, social power consumption greatly increases.
The steep increasing of various electric equipment consumptions, electrical fire accident also increases severely thereupon.According to statistics, approximately more than ten ten thousand of the annual breaking out of fires of China, more than 10 hundred million yuan of direct property loss.Wherein, the fire being caused by the electric reason such as electric wire short circuit, excess load, electric equipment fault accounts for 30% of sum, and the frequency of electrical fire and the loss causing all occupy first of all kinds of fire.In electrical fire, the fire being caused by electric wire accounts for half.Therefore about the fire-retardant of electric wire and fire safety problem people, more and more pay attention to, also more and more higher to the fire-retardant and fire protection requirement of electric wire.
Fireproof cable general reference has the cable of fire-retardant or fire resistance, generally refers in particular to that to take magnesium oxide be the mineral insulated cable of insulation or the cable with similar performance in industry.Although current this insulated cable has certain fire-retardant or fire resistance, during its burning, easily discharge pernicious gas and smog, cause secondary disaster, and effective air-isolation, when breaking out of fire, cannot stop cable further to burn.
In view of this, providing the insulated cable that a kind of fire protecting performance is better is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of mineral insulated cable, this mineral insulated cable can not discharge pernicious gas and smog when burning, the unlikely secondary disaster that causes, and can hinder the supply of oxygen and flowing of fuel gas, prevent that cable from further burning.
To achieve these goals, the technical solution of the utility model is as follows:
A mineral insulated cable, comprises cable inner core and is wrapped in the cable outer layer outside described cable inner core, between described cable inner core and described cable outer layer, is filled with inorganic mineral filler; Described cable inner core comprises at least two insulated wire cores insulated from each other, and described insulated wire cores comprises at least two conductor wire cores and is wrapped at least two insulating barriers outside described conductor wire core; Described cable outer layer is disposed with inorganic insulation band, metal inner sheath, separator and oversheath from inside to outside.
In a preferred embodiment of the present utility model, the cross sectional shape of described conductor wire core is circular.
In a preferred embodiment of the present utility model, every conductor monofilament of described conductor wire core is circular copper wire.
In a preferred embodiment of the present utility model, described circular copper wire is naked round annealed copper wire.
In a preferred embodiment of the present utility model, described circular copper wire is the surperficial single round copper wire that is provided with tin coating.
In a preferred embodiment of the present utility model, described insulating barrier is inorganic mineral insulation layer.
In a preferred embodiment of the present utility model, described metal inner sheath is nonmagnetic aluminium sheath.
In a preferred embodiment of the present utility model, described separator is metallic compound separator, and described metallic compound separator is coated on described metal inner sheath.
In a preferred embodiment of the present utility model, described oversheath is fire retardant anticorrosion clean type material oversheath.
The mineral insulated cable that the utility model provides; when burning, just do not discharge pernicious gas and smog; unlikely causing " secondary disaster "; inorganic insulation band, inorganic mineral filler and separator can attract a large amount of heats; and form the shell isolated air of carbon; hinder the supply of oxygen and flowing of fuel gas, protection insulating barrier is avoided burning, prevents that cable from further burning.The utility model is safe, environment friendly and pollution-free, can be suitable for various specific occasions lays, and extends product useful life, thereby reaches the designing requirement of scientific and technical innovation, environmental protection, safety non-pollution.
Accompanying drawing explanation
The cross sectional representation of a kind of embodiment of the mineral insulated cable that Fig. 1 provides for the utility model.
Embodiment
Core of the present utility model aims to provide a kind of mineral insulated cable, this mineral insulated cable can not discharge pernicious gas and smog when burning, the unlikely secondary disaster that causes, and can hinder the supply of oxygen and flowing of fuel gas, prevent that cable from further burning.
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with specific embodiment, further set forth the utility model.
With reference to figure 1, the cross sectional representation of a kind of embodiment of the mineral insulated cable that Fig. 1 provides for the utility model.
As shown in Figure 1, a kind of mineral insulated cable, comprises cable inner core and is wrapped in the cable outer layer outside cable inner core, is filled with inorganic mineral filler 3 between cable inner core and cable outer layer; Cable inner core comprises at least two insulated wire cores insulated from each other, and insulated wire cores comprises at least two conductor wire cores 1 and is wrapped in the insulating barrier 2 outside at least two conductor wire cores 1; Cable outer layer is disposed with inorganic insulation band 4, metal inner sheath 5, separator 6 and oversheath 7 from inside to outside.
In a kind of embodiment, cable inner core comprises plural insulated wire cores, can for two, three, four, five or more insulated wire cores are stranded makes.Insulated wire cores is followed successively by conductor wire core 1, insulating barrier 2 from inside to outside.The cross sectional shape of conductor wire core 1 is circular.Every conductor monofilament of conductor wire core 1 is circular copper wire.Circular copper wire is naked round annealed copper wire; Or circular copper wire is that overlay coating is the single round copper wire of tin.Conductor wire core 1 of the present utility model can have some layers, and every layer has somely with prismatic conductor, and per share have some conductor monofilament, twists between layers on the contrary.Single round copper wire surface do not have wrinkle, crackle, burr, field trash and other is to using harmful defect.Single line allows welding, but distance between adjacent two solder joints should be not less than 300mm, and welding is wanted firmly, and smoothing cavetto is wanted in joint.The stranded core of various processes does not allow whole root bead to connect.
In a kind of embodiment, between conductor wire core 1 and insulating barrier 2, anti-damp-proof layer can be set, insulating barrier 2 adopts the mineral insulation band of 0.18mm ± 0.02mm evenly closely wrapped on damp-proof layer, and the wrapped number of plies is not less than 6 layers, and the rate of putting up is not less than 50%.The sparking test of interchange 50HZ, 15kV that in production process, insulated wire cores should be stipulated by GB/T3048.9 is as middle inspection, not only high temperature resistant and have and do not prolong combustion and can not produce the feature of the hydrogen halide that corrosivity is very strong.Unlikely causing " secondary disaster ", safe, environment friendly and pollution-free, can be suitable for various specific occasions and lay, extend product useful life.
In a kind of embodiment, cable outer layer is followed successively by mineral insulation band 4, metal inner sheath 5, separator 6, oversheath 7 from inside to outside.Between cable inner core and cable outer layer, be filled with inorganic mineral filler 3, there is high temperature resistant, flame resistant, not Halogen, the feature such as be not fuming.Wrap up outside more positive and negative 5 layers of mineral insulation band 4, the rate of putting up is not less than 50%, and isolated insulation layer 4 and metallic sheath 5, in case mutual bonding and affect the machinery, physics, electrical property etc. of cable between them.This kind of mineral insulation band and inorganic mineral filler adopt aluminium borosilicate glass to take out fibrage processed and form, and its alkaline metal cpds is not more than 0.5%, directly makes band shape after finished product.Band lock seaming, soft, wrapped smooth, the stretching resistance extra-heavy of frangibility, performance not.Band is met after naked light, 900 ℃ of temperature, can not burn below, can stop flame to pass, and protection insulating barrier is not burned, and the smog discharging during burning is few, greatly reduces fire evil degree.When cable runs into burning; inorganic insulation band and inorganic mineral filler can attract a large amount of heats; and form the shell isolated air of carbon; hinder the supply of oxygen and flowing of fuel gas; protection insulating barrier is avoided burning; prevent that cable from further burning, make the loss of fire be unlikely further extension.
In a kind of embodiment, metal inner sheath 5 is nonmagnetic aluminium sheath.Aluminium sheath adopts aluminium directly to extrude or argon arc welding is carried out welding manner to commissure and carried out, and when adopting argon arc welding to carry out welding manner to commissure, weld intensity should be not less than 80% of mother metal.Welding guarantees not Damage to insulation band, and weld surface is without wrinkle, crackle, burr, field trash and other is to using harmful defect.
In a kind of embodiment; separator 6 is a kind of mixed type metal compound; being soft state is coated on metal inner sheath 6; when cable is met fire burning, the cooling of its bleed, and generate hard housing; can effectively stop flame to cable internal-combustion; effectively protection cable internal structure stable operation, also has anti-mechanical oscillation, water-fast spray, fire retardation simultaneously and presses down hood, clean environment firendly.
In a kind of embodiment, oversheath 7 is a kind of fire retardant anticorrosion clean type material, has Halogen, low cigarette, high flame retardant, waterproof, the composite characteristic such as corrosion-resistant, can guarantee the maximum adaptation of cable to surrounding environment.
The mineral insulated cable that the utility model provides; when burning, just do not discharge pernicious gas and smog; unlikely causing " secondary disaster "; inorganic insulation band, inorganic mineral filler and separator can attract a large amount of heats; and form the shell isolated air of carbon; hinder the supply of oxygen and flowing of fuel gas, protection insulating barrier is avoided burning, prevents that cable from further burning.The utility model is safe, environment friendly and pollution-free, can be suitable for various specific occasions lays, and extends product useful life, thereby reaches the designing requirement of scientific and technical innovation, environmental protection, safety non-pollution.
The mineral insulated cable that the utility model provides is that a kind of novel structure, process technology performance are good, fire prevention, waterproof, decay resistance is strong, mounting and installation is convenient, safe cable, it has that traditional mineral insulated cable is high temperature resistant concurrently, fire prevention, LSZH, the excellent specific property such as ageing-resistant, also overcome traditional mineral insulated cable bending property poor, easily the moisture absorption simultaneously; The shortcomings such as joint is many, installation is inconvenient, are the renewal products of traditional mineral insulated cable, and it brings a new revolution will to domestic fire-fighting domain and fire prevention market.
The utility model is mainly applicable to skyscraper, public place of entertainment and numerous construction project that requires high-quality and high safety of rated voltage 1000V and following large size city.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection range that the utility model requires is defined by appending claims and equivalent thereof.
Claims (9)
1. a mineral insulated cable, is characterized in that, comprises cable inner core and is wrapped in the cable outer layer outside described cable inner core, between described cable inner core and described cable outer layer, is filled with inorganic mineral filler; Described cable inner core comprises at least two insulated wire cores insulated from each other, and described insulated wire cores comprises at least two conductor wire cores and is wrapped at least two insulating barriers outside described conductor wire core; Described cable outer layer is disposed with inorganic insulation band, metal inner sheath, separator and oversheath from inside to outside.
2. mineral insulated cable according to claim 1, is characterized in that, the cross sectional shape of described conductor wire core is circular.
3. mineral insulated cable according to claim 1, is characterized in that, every conductor monofilament of described conductor wire core is circular copper wire.
4. mineral insulated cable according to claim 3, is characterized in that, described circular copper wire is naked round annealed copper wire.
5. mineral insulated cable according to claim 3, is characterized in that, described circular copper wire is the surperficial single round copper wire that is provided with tin coating.
6. mineral insulated cable according to claim 1, is characterized in that, described insulating barrier is inorganic mineral insulation layer.
7. mineral insulated cable according to claim 1, is characterized in that, described metal inner sheath is nonmagnetic aluminium sheath.
8. mineral insulated cable according to claim 1, is characterized in that, described separator is metallic compound separator, and described metallic compound separator is coated on described metal inner sheath.
9. mineral insulated cable according to claim 1, is characterized in that, described oversheath is fire retardant anticorrosion clean type material oversheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886288.8U CN203746536U (en) | 2013-12-31 | 2013-12-31 | Mineral insulated fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886288.8U CN203746536U (en) | 2013-12-31 | 2013-12-31 | Mineral insulated fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746536U true CN203746536U (en) | 2014-07-30 |
Family
ID=51346306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320886288.8U Expired - Fee Related CN203746536U (en) | 2013-12-31 | 2013-12-31 | Mineral insulated fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575806A (en) * | 2013-12-31 | 2015-04-29 | 上海摩恩电气股份有限公司 | Insulated fireproof mineral cable |
-
2013
- 2013-12-31 CN CN201320886288.8U patent/CN203746536U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575806A (en) * | 2013-12-31 | 2015-04-29 | 上海摩恩电气股份有限公司 | Insulated fireproof mineral cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20191231 |