CN104409143A - (Heat insulating type) mineral insulating and fireproof cable - Google Patents
(Heat insulating type) mineral insulating and fireproof cable Download PDFInfo
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- CN104409143A CN104409143A CN201410805405.2A CN201410805405A CN104409143A CN 104409143 A CN104409143 A CN 104409143A CN 201410805405 A CN201410805405 A CN 201410805405A CN 104409143 A CN104409143 A CN 104409143A
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Abstract
The invention provides a (heat insulating type) mineral insulating and fireproof cable. The (heat insulating type) mineral insulating and fireproof cable comprises an armor layer and a plurality of fireproof and insulating cable cores arranged in the armor layer, wherein the outer surfaces of the plurality of fireproof and insulating cable cores are arrayed in a tangent manner; fillers are arranged among the plurality of fireproof and insulating cable cores; heat insulating layers are arranged between the armor layer and the plurality of fireproof and insulating cable cores; and each fireproof and insulating cable core comprises a metal conductor, a mica insulating layer and an insulating protection layer in sequence from inside to outside. According to the (heat insulating type) mineral insulating and fireproof cable, an interlocking armor is used for protecting, is pressed into a circular arc shape by a machine and is formed by mutually buckling and armoring; the armor layer is not easy to deform, has better flexibility and is convenient to construct and mount; meanwhile, the service life of the product is prolonged; and halogen-free silicon ceramic adhesive is arranged between the interlocking armor layer and the fireproof and insulating cable cores and is used for separating the fireproof and insulating cable cores from external hot air and water, so that the integrity and the insulating performance of the mica insulating layers are protected.
Description
[technical field]
The present invention relates to a kind of power cable, particularly relate to a kind of mineral insulated cable with fire protecting performance armouring.
[background technology]
The cable in the market with fire protecting performance is mainly divided three classes, one is that glass fiber strap built up mica sheet is wrapped in copper cash outer surface as fireprotection layer, this cable fire-proof poor performance, the fire prevention temperature of product and fire resistance period cannot arrive the design specification of modern high-rise building, and outer field glass fiber fire protecting performance when high temperature is poor simultaneously; Another kind uses mineral powders as the rigid fireproof cable of insulating barrier, and this cable outer layer is copper pipe, lays rigid fireproof cable, complex process, and production difficulty is large, produce and use cost higher, bending property is poor, install and construction more difficult; Last one is silicon rubber insulated cable, and silicone rubber fireproof temperature is low, and therefore fire protecting performance is poor, and breaking out of fire can discharge toxic gas.
[summary of the invention]
The present invention is intended to solve the problem and provides (heat insulation type) mineral insulated cable that a kind of structure is simple, laying performance is good, use under scene of fire.
For achieving the above object, the invention provides one (heat insulation type) mineral insulated cable, armour should be comprised and is arranged on multiple fire-proof insulation cores of described armour inside by (heat insulation type) mineral insulated cable, described multiple fire-proof insulation core outer surface arranged tangential, be provided with filler between described multiple fire-proof insulation core, between described armour and multiple fire-proof insulation core, be provided with thermal insulation layer.
Described thermal insulation layer is Halogen silicon porcelain cement, and this Halogen silicon porcelain cement makes by pressing formula fashion of extrusion.
Described fire-proof insulation core from inside to outside comprises metallic conductor, mica insulation layer and insulating protective layer successively.
Described armour is interlocking S type friendship button armouring cover, and its outer surface is shape of threads, and inner surface is round and smooth shape of threads, and described armour material is the one of galvanized steel, copper alloy, stainless steel or zinc-plated Al rare earth alloy coated steel.
Described armour outer surface is provided with external protection, and this external protection is low-smoke halogen-free polyolefin or polyethylene protective sleeve.
(heat insulation type) of the present invention mineral insulated cable compared with prior art; its beneficial effect is: fire-proof insulation core adopts mica material as product insulating material; improve the validity that product insulated wire cores ensures insulation property under high temperature and fire condition; improve the useful life of product; Halogen silicon porcelain cement is provided with between lock armo layer and fire-proof insulation core; for fire-proof insulation core and outside hot gas being separated, in scene of fire, play integrality and the insulation property of protection mica insulation layer.Employing lock armo is protected; lock armo becomes arc-shaped by machine die mould; button armouring it is handed over mutually to form again; armour is not yielding; good pliability, constructability and installation, increase product useful life simultaneously; reach the effect of digital preservation cable, improve the useful life of product in scene of fire.
[accompanying drawing explanation]
Fig. 1 is cross-sectional structure schematic diagram of the present invention.
Fig. 2 is the cross-sectional structure schematic diagram that the present invention increases external protection.
[embodiment]
The following example is further explanation of the present invention, does not constitute any limitation the present invention.
As shown in Figure 1, the present invention includes multiple fire-proof insulation core 1 and armour 2, arranged tangential between multiple fire-proof insulation core 1 outer surface is also arranged on the inside of armour 2, between multiple fire-proof insulation core 1 outer surface, be provided with filler 3, between armour 2 and multiple fire-proof insulation core 1 outer surface, be provided with thermal insulation layer 4.Fire-proof insulation core 1 can be one or be at least more than two, in the present embodiment, this the present invention adopts five fire-proof insulation cores 1, fire-proof insulation core 1 from inside to outside comprises metallic conductor 11, mica insulation layer 12 and insulating protective layer 13 successively, metallic conductor 11 is by many strip metals conductor strand, the cross section of many strip metals conductor is circular or regular polygon, reduce the contact area of stranded rear metallic conductor 11, reduce contact impedance, in the present embodiment, metallic conductor 11 is copper conductor; Mica insulation layer 12 at least adopts 5 layers to be wound around copper conductor 11, mica insulation layer 12 insulation resistance is large, good insulation preformance, high temperature resistant more than 1200 DEG C, the validity of insulating barrier insulation property when ensure that cable copper conductor temperature is below fusing point, conductor working temperature when product uses can be improved simultaneously, improve the ampacity of product; Insulating protective layer 13 is polyvinyl chloride or polyethylene protective sleeve, and the integrality of protection mica insulation layer 12, plays waterproof and dampproof effect, add the useful life of fire-proof insulation core 1 simultaneously.
As shown in Figure 1, armour 2 is interlocking S type friendship button armouring cover, and this armour 2 outer surface is shape of threads, and its inner surface is round and smooth shape of threads.Armour can use the materials such as galvanized steel, zinc-plated Al rare earth alloy coated steel or copper alloy, and in the present embodiment, this armour 2 adopts galvanized steel material, and galvanized steel fusing point is more than 1500 DEG C.Armour 2 its make the rounded shape of cable profile and reduce the bending radius of cable, install more convenient, by being not easy distortion after External Force Acting, and make armouring metal occur edge of a knife shape sheet metal by producing after external force, damage can not be caused to cable inner core, increase the useful life of cable, energy digital preservation cable; During breaking out of fire, steel sheath lock armo can not discharge toxic gas, and after burning, product light transmittance is higher than 80% or higher.Armour 2 can effectively completely cut off the calcination of naked light to cable internal structure; only there is hot gas can enter cable inside, then have passed through the protection of thermal insulation layer 4, far away less than 1000 DEG C during hot gas arrival mica insulation layer 12; can ensure that mica insulation layer 12 can not be out of shape, ensure insulation property validity.Armour 2 is sturdy and durable, and anti-weight jolt capacity is strong.
As shown in Figure 1; thermal insulation layer 4 is the insulated wire cores thermal insulation layer of high molecular halogen-free silicon porcelain cement; for fire-proof insulation core 1 and outside hot gas are separated; play the effect of fire prevention, protection against the tide, heat insulation and waterproof; the integrality of the mica insulation layer 12 of fire-proof insulation core 1 internal layer, insulation property play the effect of waterproof can be protected; high molecular halogen-free silicon porcelain cement makes by pressing formula fashion of extrusion, is filled between armour 2 and multiple fire-proof insulation core 1 outer surface.In fiery residence situation, when ambient temperature reaches more than 650 DEG C, this thermal insulation layer 4 starts carbonization, under metal armor layers 2 is protected, can cable core be fixed after thermal insulation layer 4 carbonization, and effectively fire-proof insulation cable core and external heat air bound be opened, play integrality and the insulation property of protection mica insulation layer 12, the not short circuit of protection cable, not open circuit, thus ensure that the unobstructed of circuit; Thermal insulation layer 4 effectively can completely cut off core heat, and reduce sheath temperature, when fire-proof insulation core 1 is operated in temperature 125 DEG C, outer jacket temperature is within 75 DEG C, and working temperature 150 DEG C, outer jacket temperature is within 88 DEG C.
As shown in Figure 1, filler 3 adopts glass fibre, not firing of glass fibre, anti-corruption, heat insulation, sound-proofing good, and tensile strength is high, the characteristic that electrical insulating property is good, can not affect the fire performance of product in fire hazard environment.
Cable is as shown in Figure 1 applied widely, can be used in the densely populated types such as nuclear power, mine, petrochemical industry, ships, large-scale synthesis body market, skyscraper, subway, airport, school, hospital, hotel and office space, pay much attention to the house wiring use in the field of fire-fighting fire-proof.
As shown in Figure 2; one deck external protection 5 is extruded at the outer surface of armour 2 of the present invention; this external protection 5 can select low-smoke halogen-free polyolefin, polyethylene or igelite plastics; increasing external protection 5 can digital preservation cable, increases the useful life of product and improves the water resistance of product.The cable increasing external protection 5 is mainly used in outdoor laid and uses.
Although by above embodiment to invention has been announcement, protection scope of the present invention is not limited thereto, under the condition not departing from the present invention's design, all will fall in right of the present invention the distortion, replacement etc. that above each component does.
Claims (5)
1. (heat insulation type) mineral insulated cable, this cable comprises armour (2) and is arranged on the inner multiple fire-proof insulation cores (1) of described armour (2), described multiple fire-proof insulation core (1) outer surface arranged tangential, filler (3) is provided with between described multiple fire-proof insulation core (1), it is characterized in that, between described armour (3) and multiple fire-proof insulation core (1), be provided with thermal insulation layer (4).
2. as claimed in claim 1 (heat insulation type) mineral insulated cable, is characterized in that, described thermal insulation layer (4) is Halogen silicon porcelain cement, and this Halogen silicon porcelain cement makes by pressing formula fashion of extrusion.
3. (heat insulation type) mineral insulated cable as claimed in claim 1; it is characterized in that, described fire-proof insulation core (1) from inside to outside comprises metallic conductor (11), mica insulation layer (12) and insulating protective layer (13) successively.
4. (heat insulation type) mineral insulated cable as claimed in claim 1, it is characterized in that, described armour (2) is interlocking S type friendship button armouring cover, its outer surface is shape of threads, inner surface is round and smooth shape of threads, and described armour (2) material is the one of galvanized steel, copper alloy, stainless steel or zinc-plated Al rare earth alloy coated steel.
5. (heat insulation type) mineral insulated cable as claimed in claim 1; it is characterized in that; described armour (2) outer surface is provided with external protection (5), and this external protection (5) is low-smoke halogen-free polyolefin or polyethylene protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805405.2A CN104409143A (en) | 2014-12-22 | 2014-12-22 | (Heat insulating type) mineral insulating and fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805405.2A CN104409143A (en) | 2014-12-22 | 2014-12-22 | (Heat insulating type) mineral insulating and fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104409143A true CN104409143A (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410805405.2A Pending CN104409143A (en) | 2014-12-22 | 2014-12-22 | (Heat insulating type) mineral insulating and fireproof cable |
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| Country | Link |
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| CN (1) | CN104409143A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010612A (en) * | 2017-11-28 | 2018-05-08 | 安徽恒晶电缆集团有限公司 | A kind of protective metal shell fire-proof insulation cable |
| CN110111926A (en) * | 2019-04-03 | 2019-08-09 | 深圳市奔达康电缆股份有限公司 | A kind of fireproof cable with automatic cooling mineral refuge floor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201590278U (en) * | 2010-01-06 | 2010-09-22 | 郑州电缆有限公司 | Fire-resisting cable with silicon-rubber organic elastomer |
| CN202758633U (en) * | 2012-08-06 | 2013-02-27 | 杭州电缆股份有限公司 | Low-voltage flexible fireproof cable |
| CN203225128U (en) * | 2013-05-07 | 2013-10-02 | 深圳深缆科技有限公司 | Interlocked armored steel-sheath cable with rated voltage below 1 kV |
| CN203950601U (en) * | 2014-07-07 | 2014-11-19 | 安徽徽宁电器仪表集团有限公司 | A kind of fire resistant flexible control cables |
| CN204375444U (en) * | 2014-12-22 | 2015-06-03 | 深圳深缆科技有限公司 | Heat insulation type mineral insulated cable |
-
2014
- 2014-12-22 CN CN201410805405.2A patent/CN104409143A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201590278U (en) * | 2010-01-06 | 2010-09-22 | 郑州电缆有限公司 | Fire-resisting cable with silicon-rubber organic elastomer |
| CN202758633U (en) * | 2012-08-06 | 2013-02-27 | 杭州电缆股份有限公司 | Low-voltage flexible fireproof cable |
| CN203225128U (en) * | 2013-05-07 | 2013-10-02 | 深圳深缆科技有限公司 | Interlocked armored steel-sheath cable with rated voltage below 1 kV |
| CN203950601U (en) * | 2014-07-07 | 2014-11-19 | 安徽徽宁电器仪表集团有限公司 | A kind of fire resistant flexible control cables |
| CN204375444U (en) * | 2014-12-22 | 2015-06-03 | 深圳深缆科技有限公司 | Heat insulation type mineral insulated cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010612A (en) * | 2017-11-28 | 2018-05-08 | 安徽恒晶电缆集团有限公司 | A kind of protective metal shell fire-proof insulation cable |
| CN110111926A (en) * | 2019-04-03 | 2019-08-09 | 深圳市奔达康电缆股份有限公司 | A kind of fireproof cable with automatic cooling mineral refuge floor |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |