CN204463907U - A kind of fireproof cable - Google Patents
A kind of fireproof cable Download PDFInfo
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- CN204463907U CN204463907U CN201520159453.9U CN201520159453U CN204463907U CN 204463907 U CN204463907 U CN 204463907U CN 201520159453 U CN201520159453 U CN 201520159453U CN 204463907 U CN204463907 U CN 204463907U
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Abstract
The utility model discloses a kind of fireproof cable, comprise conductor, insulating barrier, laying, the restrictive coating arranged from inside to outside, described insulating barrier is the composite insulation layer be made up of inorganic mineral insulation band lapping layer and the fire-resistant composite band lapping layer of ceramic, has good heat-insulating, fire-preventing performance and overload capacity; Between insulating barrier and laying, be also provided with thermistor wire, this thermistor wire is through cable longitudinally, be connected with external monitoring warning device, send real-time early warning signal, can avoid causing from source property fire, when exogenous fire, can not be combustion-supporting, can work on.
Description
Technical field
The utility model relates to cable, particularly relates to a kind of fireproof cable.
Background technology
Along with industrialization, urbanization process are accelerated, all kinds of fire incident also frequently occurs, and causes the massive losses of lives and properties, and wherein, many fire cause because cable transships.
Along with the raising of fire-fighting consciousness, developed country has specified that the distribution line of some electric equipments must use fireproof cable, and domestic electrical department also promotes the use of fireproof cable at the skyscraper in city and public place of entertainment.
Fireproof cable should meet two aspect requirements, and one is to avoid from source property fire, and namely cable self can not initiation fire, and two is that cable does not fire in outer rim fire, also not combustion-supporting, and can work on.
The insulating material of existing common fireproof cable generally adopts polyvinyl chloride or crosslinked polyethylene, and be only in insulating material, add fire retardant, antismoke agent, refractory temperature is low, still easily breaking out of fire, once occur, cannot ensure that circuit works on, for escaping and rescuing the time striving for more growing.
At the beginning of fire occurs, the intensity of a fire is generally very little, but lays because cable is normally hidden, is difficult to be realized, easily misses fire extinguishing opportunity.
Summary of the invention
The purpose of this utility model is the shortcoming overcoming existing fireproof cable, provides that a kind of dielectric strength is good, heat resisting temperature is high, the cable that can work on after fire alarm, fire can be provided to occur.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of fireproof cable, comprise conductor, insulating barrier, laying, the restrictive coating arranged from inside to outside, it is characterized in that, described insulating barrier is the composite insulation layer be made up of inorganic mineral insulation band lapping layer and the fire-resistant composite band lapping layer of ceramic; Between insulating barrier and laying, be also provided with thermistor wire, this thermistor wire is through cable longitudinally.
Described conductor forms by multiply thin copper wire is stranded.
Described inorganic mineral insulation band is one of mica tape, asbestos yarn, glass fiber tape.
Described thermistor wire is many, is distributed on surface of insulating layer along insulating barrier circumference.
Described restrictive coating is corrugated copper tape restrictive coating.
Another kind of scheme of the present utility model is:
A kind of fireproof cable, this cable is multicore cable, have two insulated wire cores at least, it is characterized in that, described insulated wire cores is made up of conductor and the insulating barrier be coated on conductor, described conductor forms by multiply thin copper wire is stranded, and described insulating barrier is the composite insulation layer that the fire-resistant composite band lapping layer of inorganic mineral insulation band lapping layer and ceramic is formed; All insulated wire cores are stranded is formed as one cable core, and the fill gaps between insulated wire cores has inorfil, described inorfil preferred glass fibers; Outside cable core, be with laying, this laying is the fire-resistant composite band lapping layer of ceramic; Between cable core, laying, be provided with thermistor wire, this thermistor wire is through cable longitudinally, and described thermistor wire is many, is distributed on cable core surface along cable core circumference; Corrugated copper tape restrictive coating is with outside laying.
The beneficial effects of the utility model:
Because this cable does not use any organic material, can not burn, and be provided with thermistor wire in the cable, be connected with external monitoring warning device, real-time early warning signal can be sent, when cable temperature rise superelevation, cut off the electricity supply, would not organic substance near shot-firing cable, this just thoroughly avoids and causes from source property fire; In exogenous fire, cable not spontaneous combustion, not combustion-supporting yet, the intensity of a fire and smog can be alleviated, alleviate personal injury.
Because insulating barrier adopts inorganic mineral insulation band (one of mica tape, asbestos yarn, glass fibre belt), the fire-resistant composite band of ceramic wrapped, there is excellent insulating properties and heat-resisting quantity, ceramic fire-resistant composite band surface forms the hard ceramic layer of one deck, when cable overload temperature rise superelevation, can ensure that insulation is not breakdown, on the one hand, cable is made to have very strong overload capacity; On the other hand, play fire-proof and thermal-insulation effect in exogenous fire, protection cable, still can continue energising; for time enough is won in escape and rescue, more on the one hand, in cables manufacturing and laid processes; can prevent mica, asbestos powder of detached, protection insulating barrier, strengthens technological feasibility.
Metal sheath layer can play waterproof, protection against the tide, anticorrosion, the anti-external force effect of wounding, and doublely can make ground wire simultaneously.
Accompanying drawing explanation
Fig. 1 is cable list cored structure schematic diagram of the present utility model.
Fig. 2 is cable multicore structure schematic diagram of the present utility model.
Resistance wire; 5-inorfil is filled; 6-corrugated copper tape restrictive coating.
Embodiment
In order to explain the technical solution of the utility model further, be described in detail below in conjunction with drawings and Examples.
embodiment one:
As shown in Figure 1, this cable is single-core cable, this example has 4 insulated wire cores, the copper conductor 1 arranged from the inside to the outside, copper conductor 1 forms by multiply thin copper wire is stranded, the wrapped inorganic mineral insulation band of smooth densification on described copper conductor 1, but inorganic mineral insulation band mica tape, may also be asbestos yarn, go back glass fiber tape; The fire-resistant composite band of wrapped ceramic again, forms a composite insulation layer 2.Described composite insulation layer arranges thermistor wire 4, described thermistor wire 4 examples are four, be uniformly distributed along composite insulation layer circumference, this thermistor wire 4 for connecting external monitoring warning device, when breaking out of fire, owing to being heated, the resistance of thermistor wire 4 is caused to change, send early warning signal, cut off the electricity supply in time, avoid causing from source property fire.Peripheral at described thermistor wire, wrapped one deck ceramic fire resistant belt, forms laying 3; Outside laying 3, be with corrugated copper tape restrictive coating 6, metal sheath layer 6 plays waterproof, protection against the tide, anticorrosion, the anti-machinery effect of wounding, and doublely can make ground wire simultaneously.
The manufacturing step of this cable:
(1), by thin copper wire be twisted into conductor, the material of thin copper wire, diameter, number of share of stock is by designing requirement configuration;
, on conductor wrapped inorganic mineral insulation band, the more fire-resistant composite band of wrapped ceramic, forms insulating barrier;
(3), by thermistor wire arrangement on the insulating layer, specification, the quantity of thermistor wire configure by designing requirement, if many, should be uniformly distributed along insulating barrier circumference;
, the fire-resistant composite band of wrapped ceramic, formed laying;
(5), indulge copper-clad band, through argon arc welding welding, and form metal sheath layer by special wrinkle rolling equipment.
embodiment two:
As shown in Figure 2, this cable is multicore cable, this example has 4 insulated wire cores, described insulated wire cores is made up of copper conductor 1 and the insulating barrier 2 be coated on copper conductor 1, described copper conductor 1 forms by multiply thin copper wire is stranded, and described insulating barrier 2 insulating barrier is the composite insulation layer that the fire-resistant composite band lapping layer of inorganic mineral insulation band lapping layer and ceramic is formed; Fill gaps between insulated wire cores has inorfil 5, and described inorfil 5 preferably selects glass fibre; All insulated wire cores are stranded is formed as one cable core, is with laying 3 outside cable core, and this laying 3 is the fire-resistant composite band lapping layers of ceramic; Between laying 3, cable core, be provided with thermistor wire 4, this thermistor wire 4 is through cable longitudinally, and described thermistor wire 4 examples are four, are distributed on cable core surface along cable core circumference; Outside laying 3, be with metal sheath layer 6, this metal sheath layer 6 is corrugated copper tape layers.
The manufacturing step of this cable:
(1), by thin copper wire be twisted into conductor, the material of thin copper wire, diameter, number of share of stock is by designing requirement configuration;
, on conductor wrapped inorganic mineral insulation band, the more fire-resistant composite band of wrapped ceramic, forms insulating barrier, obtained insulated wire cores;
(3), by the many stranded formation cable cores of insulated wire cores, insulated wire cores quantity is by designing requirement configuration;
(4) the fill gaps inorfil, between insulated wire cores, and arrange rounding;
, the fire-resistant composite band of wrapped ceramic, formed laying;
(6), by thermistor wire be arranged between laying and cable core, specification, the quantity of thermistor wire configure by designing requirement, if many, should be uniformly distributed along cable core circumference;
(7), indulge copper-clad band, through argon arc welding welding, and form metal sheath layer by special wrinkle rolling equipment.
Claims (6)
1. a fireproof cable, comprises conductor, insulating barrier, laying, the restrictive coating arranged from inside to outside, it is characterized in that, described insulating barrier is the composite insulation layer be made up of inorganic mineral insulation band lapping layer and the fire-resistant composite band lapping layer of ceramic; Between insulating barrier and laying, be also provided with thermistor wire, this thermistor wire is through cable longitudinally.
2. fireproof cable as claimed in claim 1, it is characterized in that, described inorganic mineral insulation band is one of mica tape, asbestos yarn, glass fiber tape.
3. fireproof cable as claimed in claim 1, it is characterized in that, described thermistor wire is many, is distributed on surface of insulating layer along insulating barrier circumference.
4. fireproof cable as claimed in claim 1, it is characterized in that, described restrictive coating is corrugated copper tape restrictive coating.
5. fireproof cable as claimed in claim 1, it is characterized in that, described conductor forms by multiply thin copper wire is stranded.
6. a fireproof cable, this cable is multicore cable, have two insulated wire cores at least, it is characterized in that, described insulated wire cores is made up of conductor and the insulating barrier be coated on conductor, described conductor forms by multiply thin copper wire is stranded, and described insulating barrier is the composite insulation layer that the fire-resistant composite band lapping layer of inorganic mineral insulation band lapping layer and ceramic is formed; All insulated wire cores are stranded is formed as one cable core, and the fill gaps between insulated wire cores has inorfil, described inorfil preferred glass fibers; Outside cable core, be with laying, this laying is the fire-resistant composite band lapping layer of ceramic; Between cable core, laying, be provided with thermistor wire, this thermistor wire is through cable longitudinally, and described thermistor wire is many, is distributed on cable core surface along cable core circumference; Corrugated copper tape restrictive coating is with outside laying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159453.9U CN204463907U (en) | 2015-03-20 | 2015-03-20 | A kind of fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159453.9U CN204463907U (en) | 2015-03-20 | 2015-03-20 | A kind of fireproof cable |
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| Publication Number | Publication Date |
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| CN204463907U true CN204463907U (en) | 2015-07-08 |
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| CN201520159453.9U Active CN204463907U (en) | 2015-03-20 | 2015-03-20 | A kind of fireproof cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751968A (en) * | 2015-03-20 | 2015-07-01 | 特变电工(德阳)电缆股份有限公司 | Fireproof cable and manufacturing method thereof |
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2015
- 2015-03-20 CN CN201520159453.9U patent/CN204463907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751968A (en) * | 2015-03-20 | 2015-07-01 | 特变电工(德阳)电缆股份有限公司 | Fireproof cable and manufacturing method thereof |
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