CN104575806A - Insulated fireproof mineral cable - Google Patents
Insulated fireproof mineral cable Download PDFInfo
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- CN104575806A CN104575806A CN201310747885.7A CN201310747885A CN104575806A CN 104575806 A CN104575806 A CN 104575806A CN 201310747885 A CN201310747885 A CN 201310747885A CN 104575806 A CN104575806 A CN 104575806A
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Abstract
The invention discloses a insulated fireproof mineral cable. The insulated fireproof mineral cable comprises a cable inner core and a cable outer layer wrapping the cable inner core, wherein a space between the cable inner core and the cable outer layer is filled with inorganic mineral fillers; the cable inner core comprises at least two insulated wire cores insulated from each other; each insulated wire core comprises at least two conductor wire cores and an insulated layer wrapping the conductor wire cores; the cable outer layer comprises an inorganic insulated wrapping tape, a metal inner protective jacket, an isolating layer and an outer protective jacket from inside to outside sequentially. The insulated fireproof mineral cable does not release harmful gas or smoke during combustion, and does not cause a secondary disaster; the inorganic insulated wrapping tape, the inorganic mineral fillers and the isolating layer can be used for attracting a large amount of heat and forming a carbon housing layer to isolate air, so that the supply of oxygen and the flow of combustible gas are blocked, the insulated layer is protected from being combusted, and the cable is prevented from being further combusted. The insulated fireproof mineral cable is mainly suitable for a project at the nominal voltage of not higher than 1000 V.
Description
Technical field
The present invention relates to a kind of fireproof cable, relate 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 consumption, electrical fire accident also increases severely thereupon.According to statistics, the annual breaking out of fire of China about more than ten ten thousand, direct property loss more than 10 hundred million yuan.Wherein, account for 30% of sum by the fire that electrically reason causes such as electric wire short circuit, excess load, electric equipment fault, the frequency of electrical fire and the loss caused all occupy first of all kinds of fire.In electrical fire, the fire caused by electric wire accounts for half.Therefore more and more pay attention to about the fire-retardant of electric wire and fire safety problem people, to the fire-retardant of electric wire and fire protection requirement also more and more higher.
Fireproof cable general reference has cable that is fire-retardant or fire resistance, and generally refering in particular to magnesium oxide in industry is the mineral insulated cable insulated or the cable with similar performance.Although current this insulated cable has certain fire-retardant or fire resistance, easily discharge pernicious gas and smog during its burning, cause secondary disaster, and can not effective air-isolation, cable cannot be stoped to burn further when breaking out of fire.
In view of this, the more excellent insulated cable of a kind of fire protecting performance is provided to be the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of the present invention is to provide a kind of mineral insulated cable, this mineral insulated cable can not discharge pernicious gas and smog when burning, unlikelyly cause secondary disaster, and the supply of oxygen and the flowing of fuel gas can be hindered, prevent cable from burning further.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of mineral insulated cable, comprises cable inner core and is wrapped in the cable outer layer outside described cable inner core, be filled with inorganic mineral filler between described cable inner core and described cable outer layer; 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 in the insulating barrier outside at least two described conductor wire cores; Described cable outer layer is disposed with outer inorganic insulation band, metal inner sheath, separator and oversheath from inside to outside.
In a preferred embodiment of the invention, described insulating barrier is made in the following way: evenly wrapped on described conductor wire core by the mineral insulation band of 0.18mm ± 0.02mm, the wrapped number of plies is not less than 6 layers, and the rate of putting up is not less than 50%.
In a preferred embodiment of the invention, in described insulating barrier, described inorganic mineral filler and described outer inorganic insulation band any one, appoint the two or above-mentioned three by fusing point be 1400 DEG C, working temperature is 1200-1300 DEG C, puncture voltage is 230V/mm, the synthetic mineral of specific insulation >=1014 Ω ˙ cm insulation fire proofing material is made.
In a preferred embodiment of the invention, the cross sectional shape of described conductor wire core is circular.
In a preferred embodiment of the invention, every root conductor monofilament of described conductor wire core is circular copper wire.
In a preferred embodiment of the invention, described circular copper wire is naked round annealed copper wire.
In a preferred embodiment of the invention, described circular copper wire is the single round copper wire that surface is provided with tin coating.
In a preferred embodiment of the invention, described metal inner sheath is nonmagnetic aluminium sheath.
In a preferred embodiment of the invention, described separator is metallic compound separator, and described metallic compound separator is coated on described metal inner sheath.
In a preferred embodiment of the invention, described oversheath is made in the following way: interweave on described separator by the inorganic mineral fiber yarn class material radial direction of high temperature resistant 1400 DEG C, and coverage rate >=98%, and at outside dip-coating organic synthesis solution, through 500-600 DEG C of high bake temperature form.
Mineral insulated cable provided by the invention; just pernicious gas and smog is not discharged when burning; unlikelyly to cause " secondary disaster "; outer 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 the flowing of fuel gas, protection insulating barrier, from burning, prevents cable from burning further.Fail safe of the present invention is high, environment friendly and pollution-free, can be suitable for various specific occasion lays, and extends product useful life, thus reaches the designing requirement of scientific and technical innovation, environmental protection, safety non-pollution.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of a kind of embodiment of mineral insulated cable provided by the invention.
Embodiment
Core of the present invention aims to provide a kind of mineral insulated cable, this mineral insulated cable can not discharge pernicious gas and smog when burning, unlikelyly cause secondary disaster, and the supply of oxygen and the flowing of fuel gas can be hindered, prevent cable from burning further.
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further below in conjunction with specific embodiment.
It is the cross sectional representation of a kind of embodiment of mineral insulated cable provided by the invention with reference to figure 1, Fig. 1.
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, be 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, the insulating barrier 2 that insulated wire cores comprises at least two conductor wire cores 1 and is wrapped in outside at least two conductor wire cores 1; Cable outer layer is disposed with outer 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, and can being two, three, four, five or more, insulated wire cores is 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 root conductor monofilament of conductor wire core 1 is circular copper wire.Circular copper wire is naked round annealed copper wire; Or, the single round copper wire of circular copper wire to be overlay coating be tin.Conductor wire core 1 of the present invention can have some layers, and every layer has some with prismatic conductor, and per share have some conductor monofilament, twists on the contrary between layers.The surperficial wrinkle that do not have of single round copper wire, crackle, burr, field trash and other defect harmful to use.Single line allows welding, but the distance between adjacent two solder joints should be not less than 300mm, and welding is wanted firmly, and smoothing cavetto is wanted in joint.Variously whole root bead is not allowed to connect through stranded core.
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 uniform close of 0.18mm ± 0.02mm ground 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%.
In production process, the sparking test of interchange 50HZ, 15kV that insulated wire cores should be specified 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 very strong hydrogen halide of corrosivity.Unlikelyly to cause " secondary disaster ", fail safe is high, environment friendly and pollution-free, various specific occasion can be suitable for lay, extend product useful life.
In a preferred embodiment of the invention, in insulating barrier 2, inorganic mineral filler 3 and outer inorganic insulation band 4 any one, appoint the two or above-mentioned three by fusing point be 1400 DEG C, working temperature is 1200-1300 DEG C, puncture voltage is 230V/mm, the synthetic mineral of specific insulation >=1014 Ω ˙ cm insulation fire proofing material is made.
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.The feature such as be filled with inorganic mineral filler 3, have high temperature resistant, flame resistant, not Halogen, be not fuming between cable inner core and cable outer layer.Wrap up positive and negative 5 layers of mineral insulation band 4 more outside, the rate of putting up is not less than 50%, 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, not frangibility, performance softness, wrapped smooth, stretching resistance extra-heavy.Band can not burn temperature less than 900 DEG C, flame can be stoped to pass after meeting naked light, and protection insulating barrier is not burned, and the smog discharged during burning is few, greatly reduces fire evil degree.When cable runs into burning; outer 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 the flowing of fuel gas; protection insulating barrier is from burning; prevent cable from burning further, 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 ensures 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 metallic compound; be coated in soft state on metal inner sheath 6; when fire burning met by cable, its bleed is lowered the temperature, and generates hard housing; can effectively stop flame to cable internal-combustion; the stable operation of available protecting cable internal structure, also has resistance to mechanical vibration simultaneously, resistance to Water spray, fire retardation 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 ensure the maximum adaptation of cable to surrounding environment.
In a preferred embodiment of the invention, oversheath 7 is made in the following way: interweave on described separator by the inorganic mineral fiber yarn class material radial direction of high temperature resistant 1400 DEG C, and coverage rate >=98%, and at outside dip-coating organic synthesis solution, form through 500-600 DEG C of high bake temperature.
Mineral insulated cable provided by the invention; just pernicious gas and smog is not discharged when burning; unlikelyly to cause " secondary disaster "; outer 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 the flowing of fuel gas, protection insulating barrier, from burning, prevents cable from burning further.Fail safe of the present invention is high, environment friendly and pollution-free, can be suitable for various specific occasion lays, and extends product useful life, thus reaches the designing requirement of scientific and technical innovation, environmental protection, safety non-pollution.
Mineral insulated cable provided by the invention is that a kind of novel structure, process technology performance are good, fire prevention, waterproof, decay resistance is strong, mounting and installation is convenient, fail safe is high cable, it has that conventional mineral insulated cable is high temperature resistant concurrently, fire prevention, LSZH, the excellent specific property such as ageing-resistant, also overcome conventional mineral insulated cable bending property poor, the easy moisture absorption simultaneously; The shortcomings such as joint is many, installation is inconvenient are the renewal products of conventional mineral insulated cable, and it brings a new revolution will to domestic fire-fighting domain and fire prevention market.
The present invention is mainly applicable to the skyscraper of rated voltage 1000V and following large size city, public place of entertainment and numerous construction project requiring high-quality and high safety.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection range of application claims is defined by appending claims and equivalent thereof.
Claims (10)
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, be filled with inorganic mineral filler between described cable inner core and described cable outer layer; 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 in the insulating barrier outside at least two described conductor wire cores; Described cable outer layer is disposed with outer inorganic insulation band, metal inner sheath, separator and oversheath from inside to outside.
2. mineral insulated cable according to claim 1, it is characterized in that, described insulating barrier is made in the following way: evenly wrapped on described conductor wire core by the mineral insulation band of 0.18mm ± 0.02mm, the wrapped number of plies is not less than 6 layers, and the rate of putting up is not less than 50%.
3. mineral insulated cable according to claim 1, it is characterized in that, in described insulating barrier, described inorganic mineral filler and described outer inorganic insulation band any one, appoint the two or above-mentioned three by fusing point be 1400 DEG C, working temperature is 1200-1300 DEG C, puncture voltage is 230V/mm, the synthetic mineral of specific insulation >=1014 Ω ˙ cm insulation fire proofing material is made.
4. mineral insulated cable according to claim 1, is characterized in that, the cross sectional shape of described conductor wire core is circular.
5. mineral insulated cable according to claim 1, is characterized in that, every root conductor monofilament of described conductor wire core is circular copper wire.
6. mineral insulated cable according to claim 5, is characterized in that, described circular copper wire is naked round annealed copper wire.
7. mineral insulated cable according to claim 5, is characterized in that, described circular copper wire is the single round copper wire that surface is provided with tin coating.
8. mineral insulated cable according to claim 1, is characterized in that, described metal inner sheath is nonmagnetic aluminium sheath.
9. 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.
10. mineral insulated cable according to claim 1, it is characterized in that, described oversheath is made in the following way: interweave on described separator by the inorganic mineral fiber yarn class material radial direction of high temperature resistant 1400 DEG C, and coverage rate >=98%, and at outside dip-coating organic synthesis solution, form through 500-600 DEG C of high bake temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747885.7A CN104575806A (en) | 2013-12-31 | 2013-12-31 | Insulated fireproof mineral cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747885.7A CN104575806A (en) | 2013-12-31 | 2013-12-31 | Insulated fireproof mineral cable |
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| Publication Number | Publication Date |
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| CN104575806A true CN104575806A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310747885.7A Pending CN104575806A (en) | 2013-12-31 | 2013-12-31 | Insulated fireproof mineral cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913913A (en) * | 2016-03-23 | 2016-08-31 | 远东电缆有限公司 | Intelligent constructional mineral type insulation copper sheath flexible fireproof cable and manufacturing method |
| CN108329565A (en) * | 2018-03-06 | 2018-07-27 | 江西太平洋电缆集团有限公司 | Cable insulating materials, flexible mineral insulation fireproof cable |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06162832A (en) * | 1992-11-16 | 1994-06-10 | Kurabe Ind Co Ltd | Heat-resisting insulated cable |
| CN201829223U (en) * | 2010-09-28 | 2011-05-11 | 安徽新科电缆集团股份有限公司 | Private cable for movable buggy ladle |
| CN102403063A (en) * | 2011-11-28 | 2012-04-04 | 江苏华鹏电缆股份有限公司 | Fireproof cable |
| CN102842376A (en) * | 2012-08-27 | 2012-12-26 | 淮南新光神光纤线缆有限公司 | High-temperature fire-resistant insulated cable for ships and warships |
| CN202711799U (en) * | 2012-08-02 | 2013-01-30 | 河南华泰特种电缆有限公司 | Mineral insulation fireproof cable having corrugated stainless steel sheath |
| CN103151109A (en) * | 2012-11-16 | 2013-06-12 | 宁夏海洋线缆有限公司 | Energy-saving, low-smoke and halogen-free cable for fire protection |
| CN203746536U (en) * | 2013-12-31 | 2014-07-30 | 上海摩恩电气股份有限公司 | Mineral insulated fireproof cable |
-
2013
- 2013-12-31 CN CN201310747885.7A patent/CN104575806A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06162832A (en) * | 1992-11-16 | 1994-06-10 | Kurabe Ind Co Ltd | Heat-resisting insulated cable |
| CN201829223U (en) * | 2010-09-28 | 2011-05-11 | 安徽新科电缆集团股份有限公司 | Private cable for movable buggy ladle |
| CN102403063A (en) * | 2011-11-28 | 2012-04-04 | 江苏华鹏电缆股份有限公司 | Fireproof cable |
| CN202711799U (en) * | 2012-08-02 | 2013-01-30 | 河南华泰特种电缆有限公司 | Mineral insulation fireproof cable having corrugated stainless steel sheath |
| CN102842376A (en) * | 2012-08-27 | 2012-12-26 | 淮南新光神光纤线缆有限公司 | High-temperature fire-resistant insulated cable for ships and warships |
| CN103151109A (en) * | 2012-11-16 | 2013-06-12 | 宁夏海洋线缆有限公司 | Energy-saving, low-smoke and halogen-free cable for fire protection |
| CN203746536U (en) * | 2013-12-31 | 2014-07-30 | 上海摩恩电气股份有限公司 | Mineral insulated fireproof cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913913A (en) * | 2016-03-23 | 2016-08-31 | 远东电缆有限公司 | Intelligent constructional mineral type insulation copper sheath flexible fireproof cable and manufacturing method |
| CN108329565A (en) * | 2018-03-06 | 2018-07-27 | 江西太平洋电缆集团有限公司 | Cable insulating materials, flexible mineral insulation fireproof cable |
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Application publication date: 20150429 |
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