CN207663817U - A kind of power cable having excellent fire-retardancy - Google Patents
A kind of power cable having excellent fire-retardancy Download PDFInfo
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- CN207663817U CN207663817U CN201721653683.6U CN201721653683U CN207663817U CN 207663817 U CN207663817 U CN 207663817U CN 201721653683 U CN201721653683 U CN 201721653683U CN 207663817 U CN207663817 U CN 207663817U
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- stranding
- retardancy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model discloses a kind of power cables having excellent fire-retardancy, including copper conductor, insulating layer, the copper conductor is combined into insulated wire cores and is twisted as a stranding with insulating layer, it is provided with wrapping layer on the periphery of the stranding, liner layer, internal layer external sheath layer, outer layer external sheath layer are coated with successively in the periphery of at least two strandings；The insulating layer of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof by being made, the liner layer is made of A class halogen-free environment-friendly flame-proof cable material of polyolefin, the internal layer external sheath layer is the oxygen barrier layer with superelevation oxygen index (OI), and the outer layer external sheath layer is used and is made of halogen-free and low-smoke flame-retardant polyolefin material.The utility model copper conductor and insulating layer are combined into insulated wire cores and are twisted as a stranding and wrapped, several stranding periphery setting liner layers, double external sheath layers, each layer is made up of oxygen barrier fire proofing, temperature resistant grade is high, can fire insulation cooling, there are excellent flame retardant property, electrical insulation properties.
Description
Technical field
The utility model is related to field of cable technology, relate generally to a kind of power cable having excellent fire-retardancy.
Background technology
With being constantly progressive for human civilization, the factor for inducing fire increases considerably, and the frequency that fire occurs is increasing
Greatly, the safety of life and property of people is seriously threatened, fire has become " the terrified killer " of modern society.
Since the 1980s, multiple cable factories of China start to develop flame-proof power cable, have decades so far
Course.It is shown according to the statistical data of national cause of fire in 2014：30% causes for the electrical equipment malfunction of electric wiring,
The anti-flammability of accounting highest, electric wiring is increasingly paid attention to by government, design department and users, many skyscrapers
And densely populated place, such as subway, station, megastore, large-scale public place of entertainment, hospital be all made of A class flame retardant cables and supplied
Electricity, to ensure the person and property safety of people.
The requirement of the flame retardant property of fire-retardant class cable in national standard, fire-retardant A classes cable are fire-retardant rank highest, anti-flammability
The best fire-retardant class cable of energy, but with the development of the times, a large amount of construction of skyscraper and large scale business synthesis and people
Life security and environmental consciousness constantly enhance, fire-retardant A classes cable has been unable to meet the demand of people.With the hair of society
Exhibition, urbanization process increasingly accelerates and the awareness of safety such as fire-fighting, fire prevention are gradually increased in people, excellent fireproof performance electric power electricity
The market prospects of cable will be boundless.
Utility model content
That the technical problem to be solved by the utility model is to provide a kind of temperature resistant grades is high, can fire insulation cooling, have excellent
Flame retardant property, electrical insulation properties, when burning nontoxic smokeless, good environmental protection, external force resistance hits, and corrosion resistance is preferable
Has the power cable of excellent fire-retardancy.
Following technical solution may be used to realize in technical problem to be solved in the utility model：
A kind of power cable having excellent fire-retardancy, which is characterized in that including copper conductor, be coated on the copper conductor
Periphery on insulating layer, the copper conductor and insulating layer are combined into insulated wire cores and are twisted as a stranding, in the stranding
It is provided on periphery and absorbs the wrapping layer that heat forms carburization zone when burning, be coated with successively in the periphery of at least two strandings
Liner layer, internal layer external sheath layer, outer layer external sheath layer；
For the insulating layer by being made of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof, the liner layer uses A classes
Halogen-free environment-friendly flame-proof cable material of polyolefin is made, and the internal layer external sheath layer is the oxygen barrier layer with superelevation oxygen index (OI), described outer
Layer external sheath layer is used to be made of halogen-free and low-smoke flame-retardant polyolefin material.
In a preferred embodiment of the utility model, the wrapping layer using dual-layer high-resistance combustion glass cloth tape it is wrapped and
At.
In a preferred embodiment of the utility model, the gap location of the stranding is provided with filled layer, it is described to fill out
Layer is filled to be made of low-smoke bittern-free highly fire-proof gasket for packing material.
In a preferred embodiment of the utility model, armour is provided between the liner layer and internal layer external sheath layer
Layer is filled, the armor is formed by the double-deck galvanized steel strip is wrapped.
The utility model has the beneficial effects that：A kind of power cable having excellent fire-retardancy, copper conductor and insulating layer
It is combined into insulated wire cores and is twisted as a stranding and wrapped, several stranding peripheries setting liner layers, double external sheath layers, each layer passes through
Oxygen barrier fire proofing is made, temperature resistant grade is high, can fire insulation cooling, there are excellent flame retardant property, electrical insulation properties；Between cable core
Gap is filled using low-smoke bittern-free highly fire-proof gasket for packing, when burning nontoxic smokeless, good environmental protection；Using the double-deck galvanized steel strip
Wrapped sheathed structure, can external force resistance hit, corrosion resistance is preferable.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for the power cable having excellent fire-retardancy of the utility model.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to Fig. 1, what is provided in figure is a kind of power cable having excellent fire-retardancy, including copper conductor 100, cladding
Insulating layer 200 on the periphery of copper conductor 100, for conductor using copper conductor 100 is pressed, performance meets GB/T 3956-2008
Requirement；Insulating layer 200 has excellent flame retardant property by being made of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof
And electrical insulation properties, material temperature resistant grade is very high, and when burning is nontoxic smokeless.Copper conductor 100 is combined into insulation with insulating layer 200
Core is simultaneously twisted as a stranding, the wrapping layer 300 of absorption heat formation carburization zone when being provided with burning on the periphery of stranding, around
Covering 300 uses dual-layer high-resistance to fire, and glass cloth tape is wrapped to be formed；After stranding in such a way that dual-layer high-resistance combustion glass cloth tape is wrapped,
So that product is absorbed heat in burning, form carburization zone, completely cut off gas-bearing formation, prevent propagation of flame, reduces cable internal temperature.
The gap location of stranding is provided with filled layer 400, filled layer 400 uses low-smoke bittern-free highly fire-proof gasket for packing material system
At；Cable core gap is filled using low-smoke bittern-free highly fire-proof gasket for packing, and burn low smoke and zero halogen, harmless in use, relative to
Traditional mineral wool rope is more environmentally-friendly.
It is coated with liner layer 500, armor 600, internal layer external sheath layer 700 and outer successively in the periphery of at least two strandings
Layer external sheath layer 800, it is preferred that the inside of liner layer 500 is provided with four strandings and the copper conductor 100 of at least one group stranding counts
It measures unequal, the periphery of four strandings is provided with square insulation sleeve, filled layer 400 is arranged in the inside of insulation sleeve, insulation sleeve
It is made of ceramic crosslinked polyolefin insulating material.
Fire lagging 900 is provided between insulation sleeve and liner layer 500, fire lagging 900 is by sodium metasilicate, pearl
One or more mixing groups in rock, calcium hydroxide, aluminium hydroxide, magnesium hydroxide, ceramic powder, glass powder, bentonite, mica powder
At.The formula each component content ratio of fire lagging 900 is：Sodium metasilicate 15-40, perlite 2-6, calcium hydroxide 4-10, hydrogen-oxygen
Change aluminium 25-40, magnesium hydroxide 2-5, ceramic powder 3-10, glass powder 3-8, bentonite 3-10, mica powder 3-10；Preferably, it prevents fires
The formula each component content ratio of separation layer 900 is：Sodium metasilicate 30, perlite 4, calcium hydroxide 7, aluminium hydroxide 30, hydroxide
Magnesium 3, ceramic powder 6, glass powder 5, bentonite 6, mica powder 7.
Liner layer 500 is made of A class halogen-free environment-friendly flame-proof cable material of polyolefin, and 500 material of liner layer uses environment-friendly type A
Class phosphorus flame retardant etc., this material oxygen index (OI) is very high, and good fire insulation cooling can be played when fire occurs for cable
Effect.
Armor 600 is formed by the double-deck galvanized steel strip is wrapped, have under flame well gear fire action, can prevent flame to
Sprawling inside cable, enhancing cable external force resistance are hit, and corrosion resistance is preferable.
Internal layer external sheath layer 700 be the oxygen barrier layer with superelevation oxygen index (OI), special fire insulation cooling oxygen barrier layer the characteristics of be
A large amount of hydrone can be generated by meeting fire, can be played the role of cooling, and can produce hard ceramic-like shell rapidly, can be prevented fire
Flame is inwardly spread, and cable core is protected not scalded by flame, further increases the flame retardant property of cable；Outer layer external sheath layer 800 uses
It is made of halogen-free and low-smoke flame-retardant polyolefin material, meets cable-flame retardant, low smoke and zero halogen requirement, improved cable and normally lay and make
Mechanical performance in；Oversheath uses special bilayer combination oversheath, not only ensure that the overall flame performance of cable, but also protect
The mechanical and physical performance of cable jacket is demonstrate,proved.
In conclusion the utility model copper conductor 100 is combined into insulated wire cores and is twisted as a stranding simultaneously with insulating layer 200
Wrapped, several stranding periphery setting liner layers 500, double external sheath layers have more excellent flame retardant property, as shown in the table：
Each layer is made up of oxygen barrier or fire proofing, and processing performance is good, is readily produced, and material is cost-effective, product section
Can environmental protection securely and reliably more conducively the evacuation of personnel and withdrawn when fire occurs, ensured the safety of life and property of the people.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection domain is asked to be defined by appended claims and coordinate.
Claims (4)
1. a kind of power cable having excellent fire-retardancy, which is characterized in that including copper conductor, be coated on the copper conductor
Insulating layer on periphery, the copper conductor and insulating layer are combined into insulated wire cores and are twisted as a stranding, in the week of the stranding
It is provided on side and absorbs the wrapping layer that heat forms carburization zone when burning, in the periphery of at least two strandings is coated with successively
Lining, internal layer external sheath layer, outer layer external sheath layer；
For the insulating layer by being made of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof, the liner layer uses A class Halogens
Environmental protection flame retardant cable material of polyolefin is made, and the internal layer external sheath layer is the oxygen barrier layer with superelevation oxygen index (OI), outside the outer layer
Restrictive coating is used and is made of halogen-free and low-smoke flame-retardant polyolefin material.
2. a kind of power cable having excellent fire-retardancy as described in claim 1, which is characterized in that the wrapping layer is adopted
With dual-layer high-resistance combustion, glass cloth tape is wrapped forms.
3. a kind of power cable having excellent fire-retardancy as claimed in claim 2, which is characterized in that in the stranding
Gap location is provided with filled layer, and the filled layer is made of low-smoke bittern-free highly fire-proof gasket for packing material.
4. a kind of power cable having excellent fire-retardancy as claimed in claim 3, which is characterized in that in the liner layer
Armor is provided between internal layer external sheath layer, the armor is formed by the double-deck galvanized steel strip is wrapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721653683.6U CN207663817U (en) | 2017-12-01 | 2017-12-01 | A kind of power cable having excellent fire-retardancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721653683.6U CN207663817U (en) | 2017-12-01 | 2017-12-01 | A kind of power cable having excellent fire-retardancy |
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| Publication Number | Publication Date |
|---|---|
| CN207663817U true CN207663817U (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721653683.6U Active CN207663817U (en) | 2017-12-01 | 2017-12-01 | A kind of power cable having excellent fire-retardancy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863185A (en) * | 2017-12-01 | 2018-03-30 | 金杯电工衡阳电缆有限公司 | A kind of power cable for possessing excellent fire-retardancy |
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2017
- 2017-12-01 CN CN201721653683.6U patent/CN207663817U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863185A (en) * | 2017-12-01 | 2018-03-30 | 金杯电工衡阳电缆有限公司 | A kind of power cable for possessing excellent fire-retardancy |
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