CN204375444U - Heat insulation type mineral insulated cable - Google Patents

Heat insulation type mineral insulated cable Download PDF

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Publication number
CN204375444U
CN204375444U CN201420826748.2U CN201420826748U CN204375444U CN 204375444 U CN204375444 U CN 204375444U CN 201420826748 U CN201420826748 U CN 201420826748U CN 204375444 U CN204375444 U CN 204375444U
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China
Prior art keywords
fire
armour
proof
insulation
proof insulation
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Active
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CN201420826748.2U
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Chinese (zh)
Inventor
沈俊安
洪潜琪
郭克钢
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SHENZHEN DEEP CABLE TECHNOLOGY Co Ltd
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SHENZHEN DEEP CABLE TECHNOLOGY Co Ltd
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Abstract

Heat insulation type mineral insulated cable; comprise armour and be arranged on multiple fire-proof insulation cores of described armour inside; described multiple fire-proof insulation core outer surface arranged tangential; filler is provided with between described multiple fire-proof insulation core; be provided with thermal insulation layer between described armour and multiple fire-proof insulation core, described fire-proof insulation core from inside to outside comprises metallic conductor, mica insulation layer and insulating protective layer successively.Employing lock armo is protected, and lock armo becomes arc-shaped by machine die mould, then it is handed over mutually button armouring to form, and armour is not yielding, good pliability, constructability and installation, increases product useful life simultaneously; 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 and moisture are separated, the integrality of protection mica insulation layer and insulation property.

Description

Heat insulation type mineral insulated cable
[technical field]
The utility model relates to a kind of power cable, particularly relates 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 utility model be intended to solve the problem and provide a kind of structure simple, lay performance heat insulation type mineral insulated cable that is good, that use under scene of fire.
For achieving the above object, the utility model provides a kind of heat insulation type mineral insulated cable, this heat insulation type mineral insulated cable comprises armour and is arranged on multiple fire-proof insulation cores of described armour inside, 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.
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 mineral insulated cable of the present utility model 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 utility model.
Fig. 2 is the cross-sectional structure schematic diagram that the utility model increases external protection.
[embodiment]
The following example is to further explanation of the present utility model and explanation, does not constitute any limitation the utility model.
As shown in Figure 1, the utility model comprises 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 utility model 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; 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 utility model; 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 disclosed the utility model by above embodiment; but protection range of the present utility model is not limited thereto; under the condition not departing from the utility model design, all will fall in right of the present utility model 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. heat insulation type mineral insulated cable as claimed in claim 1, it is characterized in that, described thermal insulation layer (4) is Halogen silicon porcelain cement.
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.
CN201420826748.2U 2014-12-22 2014-12-22 Heat insulation type mineral insulated cable Active CN204375444U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420826748.2U CN204375444U (en) 2014-12-22 2014-12-22 Heat insulation type mineral insulated cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420826748.2U CN204375444U (en) 2014-12-22 2014-12-22 Heat insulation type mineral insulated cable

Publications (1)

Publication Number Publication Date
CN204375444U true CN204375444U (en) 2015-06-03

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CN201420826748.2U Active CN204375444U (en) 2014-12-22 2014-12-22 Heat insulation type mineral insulated cable

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104409143A (en) * 2014-12-22 2015-03-11 深圳深缆科技有限公司 (Heat insulating type) mineral insulating and fireproof cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104409143A (en) * 2014-12-22 2015-03-11 深圳深缆科技有限公司 (Heat insulating type) mineral insulating and fireproof cable

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