CN104575739A - Mineral insulated metal sheath cable - Google Patents
Mineral insulated metal sheath cable Download PDFInfo
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- CN104575739A CN104575739A CN201310475131.0A CN201310475131A CN104575739A CN 104575739 A CN104575739 A CN 104575739A CN 201310475131 A CN201310475131 A CN 201310475131A CN 104575739 A CN104575739 A CN 104575739A
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- layer
- cable
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- insulated wire
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Abstract
The invention discloses a mineral insulated metal sheath cable. The mineral insulated metal sheath cable comprises a cable core consisting of at least one insulated wire core, a refractory layer encircled on the cable core and an external protection layer wrapping the refractory layer in an extending manner, wherein the insulated wire core comprises a conductor produced by a conductive material and a refractory insulation layer wrapping the outer layer of the conductor in an extending manner, a high-temperature filling rope is filled in a gap between the insulated wire core and the refractory layer, the refractory layer adopts a ceramic fireproof and refractory silicone rubber and high temperature-resistant glass fiber cloth composite belt layer, double layers are overlapped and bound on the cable core in opposite positions, and the external protection layer comprises a fireproof layer, a filled layer and a metal outer layer. The cable disclosed by the invention is excellent in electric insulation performance, good softness, resistance to high temperature and low temperature, and excellent fireproofness and fire resistance; the cable is further simple in processing technology and convenient to transport and mount.
Description
Technical field
The present invention relates to electric wire, especially relate to a kind of power flexible cable with fireproof function.
Background technology
Along with the development of modern electric power industry, the sharp increase of urban population, skyscraper, hotel, large supermarket, hospital, subway, power plant, nuclear power station, warehouse, airport constantly increase, and fireproof cable is widely used in these important public places.And along with the proposition of parliament of European Union and EU Council RoHS environmental protection instruction, people are also more and more higher for the environmental requirement of cable.
The fireproof cable of current China cable industry mainly contains two large types: a class is the commonplace wrapped compound fire-resisting cable adding insulation of fire-resistant isinglass belt; One class is insulating protective metal shell of mineral cable.Insulating protective metal shell of mineral cable needs special production equipment, and fund input is large, and production cost is high, and oversheath is metal material, product than great, bending radius is little, transport, mounting and installation difficulty are large; Mica tape class fire-resisting cable is not then by spray, vibratory test, existing a lot of mica tape again thicker, binder content is high, hardness is large, in wrapped or bending process, mica sheet easily comes off, and mica tape is of a great variety, quality is uneven, less stable, is difficult to ensure its fire resistance quality.
Summary of the invention
The object of the present invention is to provide a kind of insulating protective metal shell of mineral cable, to overcome the existing technological deficiency of fireproof cable, improve fireproofing of cable fire resistance.
Insulating protective metal shell of mineral cable of the present invention comprises by the cable conductor being no less than an insulated wire cores and forming, be centered around the flame retardant coating on described cable conductor, and the outer jacket extruded on described flame retardant coating, wherein said insulated wire cores comprises the conductor be made up of electric conducting material and is extruded in the outer field refractory insulating layer of described conductor, high temperature packing rope is filled with in gap wherein between described insulated wire cores and flame retardant coating, described flame retardant coating adopts ceramic fireproof silicon rubber and high temperature resistance glass fiber cloth composite band material, double-layer overlapping is oppositely tightened on cable conductor, described outer jacket is by fireprotection layer, packed layer and metal outer are formed.
As preferably, described conductor is formed by multiply zinc-plated soft copper conductor or not zinc-plated soft copper conductor strand.
As preferably, described fireprotection layer has multilayer Mica tape to form.
As preferably, described packed layer is asbestos layer.
As preferably, described metal outer is insulated metal.
As preferably, described refractory insulating layer adopts refractory ceramics fire-resistant silicon rubber to make, and outer jacket can adopt plastics, elastomer or elastomeric material to make.
The flame retardant coating of insulating protective metal shell of mineral cable of the present invention adopts the composite band material of ceramic fireproof silicon rubber and high temperature resistance glass fiber cloth, wherein ceramic fireproof silicon rubber in high temperature silicone rubber (HTV), adds white carbon, silicone oil, antistructurizing agent and other auxiliary agent make, possesses the performance of usual silicone rubber at normal temperatures, hard ceramic shell is formed after the calcination of thermal-flame, form the isolation layer that one deck is good, make insulation still have certain mechanical strength and good electrical insulation capability; In addition, oppositely tightened by composite band flame retardant coating double-layer overlapping, composite band starts hardening under 350 DEG C and above flame condition, along with temperature raises, and, complete housing hard by Low fire ceramic shape rapidly, the cable core of protection object to be burned body is not damaged; Insulating barrier plays dual synergy together with composite band flame retardant coating, makes cable itself not prolong combustion, not open circuit, not short circuit, not power-off, plays good fireproof effect.
Insulating protective metal shell of mineral cable of the present invention is except having higher electrical insulation capability, good softness and high temperature resistant, outside resistance to low temperature, cable fire function admirable, when fire occurs, cable line still can keep the normal operation of certain hour, for rescue work wins the quality time to greatest extent, casualties and damage to property can be reduced to a great extent, cable insulation is non-corrosiveness when burning, toxicant and gas produce, secondary will be caused to endanger to disaster-stricken people, be specially adapted to public fire protection, the place that fire safety demands is very high uses.
Insulating protective metal shell of mineral Cable Bending Radius of the present invention is little, and proportion is little, and easily transport is laid, and processing technology is simple, and cost performance is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of insulating protective metal shell of mineral cable of the present invention.
In figure: 1-conductor; 2-refractory insulating layer; 3-high temperature resistant gasket for packing; 4-flame retardant coating; 5-outer jacket.
Embodiment
Below by way of embodiment, and the invention will be further described by reference to the accompanying drawings.
As shown in Figure 1, include conductor 1, refractory insulating layer 2, high temperature resistant gasket for packing 3, flame retardant coating 4 and outer jacket 5 from inside to outside successively, described outer jacket is made up of fireprotection layer, packed layer and metal outer the structure of insulating protective metal shell of mineral cable.
It should be noted that in described outer jacket and be also added with sillimanite.
It should be noted that described fireprotection layer has multilayer Mica tape to form.
It should be noted that described packed layer is asbestos layer.
It should be noted that described metal outer is insulated metal.
Zinc-plated or not zinc-plated soft copper is stranded by multiply conductor 1 and to be extruded in the outer field material of conductor 1 be that the refractory insulating layer 2 of refractory ceramics fire-resistant silicon rubber forms insulated wire cores, the many stranded formation cable conductors of insulated wire cores.On filling in the gap of insulated wire cores after high temperature resistant gasket for packing 3, around upper flame retardant coating 4, flame retardant coating 4 is oppositely tightened by ceramic fireproof silicon rubber and high temperature resistance glass fiber cloth composite band double-layer overlapping.Finally, be extruded in by outer jacket 5 on flame retardant coating 4, outer jacket 5 can adopt plastics, elastomer or elastomeric material.
The present embodiment insulating protective metal shell of mineral cable properties all meet design requirement and instructions for use, its technical performance index is: operating voltage: 0.6/1kV and following; Test voltage, time: 3.5kV/5min, do not puncture; Cable Bending Radius :≤6D(D: the outside diameter of cable).
Claims (5)
1. an insulating protective metal shell of mineral cable, comprise by the cable conductor being no less than an insulated wire cores and forming, be centered around the flame retardant coating on described cable conductor, and the outer jacket extruded on described flame retardant coating, wherein said insulated wire cores comprises the conductor be made up of electric conducting material and is extruded in the outer field refractory insulating layer of described conductor, it is characterized in that being filled with high temperature packing rope in the gap between described insulated wire cores and flame retardant coating, described flame retardant coating adopts ceramic fireproof silicon rubber and high temperature resistance glass fiber cloth composite band material, double-layer overlapping is oppositely tightened on cable conductor, described outer jacket is by fireprotection layer, packed layer and metal outer are formed.
2. insulating protective metal shell of mineral cable according to claim 1, is characterized in that, described conductor is formed by multiply zinc-plated soft copper conductor or not zinc-plated soft copper conductor strand.
3. insulating protective metal shell of mineral cable according to claim 1, is characterized in that, described fireprotection layer has multilayer Mica tape to form.
4. insulating protective metal shell of mineral cable according to claim 1, is characterized in that, described packed layer is asbestos layer.
5. insulating protective metal shell of mineral cable according to claim 4, is characterized in that, described metal outer is insulated metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475131.0A CN104575739A (en) | 2013-10-12 | 2013-10-12 | Mineral insulated metal sheath cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475131.0A CN104575739A (en) | 2013-10-12 | 2013-10-12 | Mineral insulated metal sheath cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104575739A true CN104575739A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310475131.0A Pending CN104575739A (en) | 2013-10-12 | 2013-10-12 | Mineral insulated metal sheath cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104575739A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710670A (en) * | 2005-07-20 | 2005-12-21 | 江苏远东集团有限公司 | Fire-retardant electric wire |
| CN201134299Y (en) * | 2007-12-21 | 2008-10-15 | 安徽华菱电缆集团有限公司 | Ceramic silicon rubber insulating flame-resistant cable |
| CN201897996U (en) * | 2010-08-09 | 2011-07-13 | 山东阳谷电缆集团有限公司 | Rat-proof and termite-proof power cable |
| CN202058496U (en) * | 2011-06-10 | 2011-11-30 | 安徽华能电缆集团有限公司 | Inorganic-mineral-insulated fire-resistant cable with copper core and stainless steel sheath |
| CN202454356U (en) * | 2011-12-30 | 2012-09-26 | 深圳市沃尔核材股份有限公司 | Vitrified fireproof compound band |
| CN202887857U (en) * | 2012-09-22 | 2013-04-17 | 安徽亚神电缆集团有限公司 | Frequency converter special aluminum alloy power cable |
-
2013
- 2013-10-12 CN CN201310475131.0A patent/CN104575739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710670A (en) * | 2005-07-20 | 2005-12-21 | 江苏远东集团有限公司 | Fire-retardant electric wire |
| CN201134299Y (en) * | 2007-12-21 | 2008-10-15 | 安徽华菱电缆集团有限公司 | Ceramic silicon rubber insulating flame-resistant cable |
| CN201897996U (en) * | 2010-08-09 | 2011-07-13 | 山东阳谷电缆集团有限公司 | Rat-proof and termite-proof power cable |
| CN202058496U (en) * | 2011-06-10 | 2011-11-30 | 安徽华能电缆集团有限公司 | Inorganic-mineral-insulated fire-resistant cable with copper core and stainless steel sheath |
| CN202454356U (en) * | 2011-12-30 | 2012-09-26 | 深圳市沃尔核材股份有限公司 | Vitrified fireproof compound band |
| CN202887857U (en) * | 2012-09-22 | 2013-04-17 | 安徽亚神电缆集团有限公司 | Frequency converter special aluminum alloy power cable |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |