CN106601357A - Copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable - Google Patents
Copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable Download PDFInfo
- Publication number
- CN106601357A CN106601357A CN201611265535.7A CN201611265535A CN106601357A CN 106601357 A CN106601357 A CN 106601357A CN 201611265535 A CN201611265535 A CN 201611265535A CN 106601357 A CN106601357 A CN 106601357A
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- Prior art keywords
- layer
- power cable
- fire
- retardant
- cable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/022—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/028—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients with screen grounding means, e.g. drain wires
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable. The copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable comprises a cable core, wherein the cable core comprises three main insulating wire cores and three ground insulating wire cores; each main insulating wire core or each ground insulating wire core comprises conductors; the periphery of each conductor is coated with a fireproof layer and an insulating layer from inside to outside in sequence; and the periphery of the cable core is coated with a fire insulation layer, a metal shielding layer, an oxygen insulation layer, an armoring layer and an external covering layer from inside to outside in sequence. The power cable has quite high flame retardancy and fireproof property, electromagnetic compatibility, interference resistance, reliable supportability, and environment protection performance, thereby achieving quite long service life and satisfying environment requirement.
Description
Technical field
The present invention relates to a kind of power cable, and in particular to a kind of rated voltage 0.6/1kV cross-linked polyethylene insulated copper strip
The fire-retardant core power cable of A classes fire resisting environmental protection three+three of shielding steel-tape armouring low smoke, zero halogen polyolefin oversheath.
Background technology
With the development of society, continuous enhancing of the people to safe and environment-friendly consciousness is safe and reliable to electrical equipment and equipment
Property require also more and more higher.Three-phase four-wire system for low-voltage distributing line is changed into three-phase five-wire mode, increases on the basis of original
Protective grounding line is used for the ground connection of equipment, it is ensured that reduce when electrical equipment is leaked electricity and the person and equipment are compromised.To line
There is fire and continue to keep the energization of certain hour, the intensity of a fire model of fire in the occasion that road use environment has higher requirements, such as circuit
Enclose the impact that less cigarette, external electromagnetic are produced in indiffusion, fire to this circuit, impact of this circuit electromagnetism to miscellaneous equipment
Deng needing market to continually develop and meet these requirements substitute products.
Currently used for three-phase five-wire mode electrical power distribution system typical cable be the core of rated voltage 0.6/1kV five (mainly have three+
Two cores, four+one cores, the class of five core 3) crosslinking polyethylene insulated steel band armored polrvinyl chloride oversheath power cable.Serial five core
Cable 50mm2 and above specification conductor are generally using fan-shaped compact conductor or shoe compact conductor, fan-shaped compact conductor or shoe
Compact conductor is fortuitous conductor, and in use electric field occurs irregular uneven situation, and the insulating barrier degree of eccentricity is larger, and this is
Three complete electric power systems of row five-core cable, when three master core current balance types, the electric current of its neutral core is zero；Work as height
When subharmonic is produced, through the multiple reflections of cable, will there is the crest to this superimposed with trough with crest or trough
Chance, the longer stacking machine of cable can show also more obvious more.In addition this big electric capacity of cable itself is to higher hamonic wave
Just there is amplification, in neutral conductor in-core without phase contrast, so electric current will for the current component that higher hamonic wave is produced
The several times of former component are superimposed as, neutral core will soon be breakdown under high-frequency impulse.The serial five-core cable is without metal screen
Shield structure, the jamming performance of anti-external electromagnetic signal is poor in energization running, while this circuit will produce electromagnetic signal pair
It is poor that neighbouring electrical equipment interferes i.e. Electro Magnetic Compatibility.When there is fire in cable run, the intensity of a fire is more and more prosperous not
Disconnected to expand, cable run is burned at once so as to cannot normally supply, and has a strong impact on the elimination of live fire and the rescue of personnel, fire
More toxic smoke will be produced during calamity very big injury is caused to the person, environment is made a very bad impression.Serial five-core cable is not
Its corresponding requirement can be met.
The content of the invention
The present invention is low so as to provide a kind of fire-retardant A classes fire resisting environmental protection of copper strip shielding steel tape armouring in order to solve the above problems
Piezoelectric forces cable.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of fire-retardant A classes fire resisting environmental protection lv power cable of copper strip shielding steel tape armouring, the copper strip shielding steel tape armouring
Fire-retardant A classes fire resisting environmental protection lv power cable includes cable core, and the cable core includes three major insulation cores and three ground covered wires
Core, every major insulation core or ground insulated wire cores include conductor, and conductor periphery coats successively from inside to outside flame retardant coating and absolutely
Edge layer, the cable core periphery is coated with successively from inside to outside refuge floor, metal screen layer, oxygen barrier layer, armor and serving.
In a preferred embodiment of the invention, the conductor presses circular stranded conductor for the 2nd kind.
In a preferred embodiment of the invention, the flame retardant coating is made up of main flame retardant coating and protective refractory layer, described
Main flame retardant coating by mica tape overlap it is wrapped form, the protective refractory layer overlaps wrapped forming by non-woven fabrics.
In a preferred embodiment of the invention, the insulating barrier is made up of major insulation internal layer and colour code outer layer,
The major insulation internal layer is extruded by cross-linked polyethylene insulating material and formed, and colour code outer layer is by crosslinked polyetylene insulated equal with color masterbatch
Even compound is extruded and formed, and colour code outer layer thickness is the 5%～10% of thickness of insulating layer.
In a preferred embodiment of the invention, three major insulation cores contact with each other, and three ground insulated wire cores are in
Between three major insulation cores in edge voids.
In a preferred embodiment of the invention, the refuge floor is formed by halogen-free low-smoke high-flame band overlap is wrapped,
The metal screen layer is that copper strips overlap is wrapped to be formed, and to extrude low smoke, zero halogen oxygen barrier layer, the armor is the oxygen barrier layer
Double-deck galvanized steel strip gap is wrapped to be formed, and the serving is to extrude low smoke, zero halogen polyolefin oversheath.
The invention has the beneficial effects as follows：
The present invention has very high anti-flammability and fire resistance, and electromagnetic compatibility and anti-interference, reliable guarantee, environmental protection
Performance, so as to having very high service life and meeting environmental requirement.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1, the fire-retardant A classes fire resisting environmental protection lv power cable of the copper strip shielding steel tape armouring that the present invention is provided, its master
It is used for skyscraper, public place and has the special place of fire protection requirement, it includes cable core 100, cable core 100 includes three masters
Insulated wire cores 110 and three ground insulated wire cores 120, every major insulation core 110 or ground insulated wire cores 120 all include conductor 200.
Conductor 200 specially presses regular the 2nd kind of stranded round conductor, its each layer compacting degree uniform one using layering
Cause, specifically pressed from high abrasion, high accuracy, the layering of high-strength nano coating mold, so that the smooth in appearance of conductor 200,
Electric discharge is little.
Flame retardant coating 210 and insulating barrier 220 are coated successively from inside to outside in the periphery of conductor 200.
Flame retardant coating 210 is made up of main flame retardant coating 211 and protective refractory layer 212 successively from inside to outside.
Main flame retardant coating 211 by mica tape overlap it is wrapped form, protective refractory layer 212 overlaps wrapped forming by non-woven fabrics；
Due to main flame retardant coating 212 by mica tape overlap it is wrapped form, Duplication 15%～20%, protective refractory layer 212 by
Non-woven fabrics overlap wrapped forming, so that conductor 200 is not mechanically damaged.
Insulating barrier 220 is made up of major insulation internal layer 221 and colour code outer layer 222 successively from inside to outside.
Insulating barrier 220 is specifically extruded by cross-linked polyethylene insulating material and formed, and is produced by extrusion molding main frame.
Colour code outer layer 222 is specifically formed by crosslinked polyetylene insulated extruding with the uniform compound of color masterbatch, auxiliary by extrusion molding
Machine is produced.
In addition, the insulation thickness of insulating barrier 220 is uniform, major insulation internal layer 221 is with colour code outer layer 222 in extrusion head
Merge, between can not be layered, the thickness of colour code outer layer 222 for the thickness of insulating barrier 220 5%～10%.
Because major insulation internal layer 221 is using cross-linked polyethylene insulating material this colorant, so can reduce it is traditional it is complete in color masterbatch
Impact of the material to insulating properties；
The color masterbatch that colour code outer layer 222 is adopted for concentration carrier-free color masterbatch, granule is tiny, steady quality, no
Moisture-sensitive, Jing long term high temperatures are colour-fast, and additional proportion is 0.05%～0.15%, and color masterbatch mixes with cross-linked polyethylene insulating material
Colo(u)r mixer is installed additional using in extrusion molding subsidiary engine hopper and charging aperture, the outstanding amount of master batch of colo(u)r mixer can be with the association of extrusion molding subsidiary engine and synchronous,
Guarantee to extrude the uniformity of colour code outer layer 222, cross-linked polyethylene insulating material is wasted and also greatly reduced when changing colour specification.
Three major insulation cores 110 in the application contact with each other, and three ground insulated wire cores 120 are exhausted in three masters
Between edge core 110 in edge voids, so ensure the roundness of cable core 100.
In addition, in order to further improve roundness, poly- third can be filled in edge voids between three major insulation cores 110
Alkene inserts.
The periphery of cable core 100 is coated with successively from inside to outside refuge floor 310, metal screen layer 320, oxygen barrier layer 330, armor
340 and outer jacket 350.
Refuge floor 310 is specifically formed by halogen-free low-smoke high-flame band overlap is wrapped, and it has very high high-temperature stability, Jing
Long-time calcination remains to play good fire insulation effect, flame combustion can be reduced to the degree of insulation, so as to prevent the intensity of a fire from expanding
Greatly.
Metal screen layer 320 specifically using copper strips overlap it is wrapped forms, its maskable external electromagnetic interference and this line electricity
The transmitting of magnetic, separately as the protective grounding of electrical equipment, protects electrical equipment and personal safety.
Oxygen barrier layer 330 is specifically extruded on metal screen layer 320 using low smoke, zero halogen polyolefin oxygen barrier material, and it has very high
Oxygen index (OI), can crust under flame calcination or hot conditionss, housing is not melted, not dripped, and has extraordinary heat-insulated fire insulation effect
Really, fireproofing of cable wall is formed.
Armor 340 specifically adopts steel-tape armouring structure, and it is for providing mechanical protection to cable, to improve cable
Tensile property, lateral pressure resistant performance, external mechanical are damaged and anti-mouse performance, can very well protect the cable core of cable to preserve from, separately
Can be used for the ground connection electic protection of circuit.
Serving 350 is specifically extruded on armor 340 using environment-protective halogen-free low-smoke protective cover material, and it has more aerobic finger
Number, preferably, with preferable mechanical and physical performance, the cable core for having protection cable very well preserves from anti-flammability.
By the enforcement of such scheme, the conductor 100 in cable core 100 is made 3+3 structures, three ground covered wires by the application
Core 120 is filled out respectively between three major insulation cores 110 on the space at edge, it is possible to reduce the use of inserts, three neutrality
Mutually delayed 120 ° of the phase place of core, defines the state of a symmetrical balance so that electric current will not be superimposed, and effectively reduce
Harm of the higher hamonic wave to cable, protective grounding line is made in outside cable core becomes concentric conductor, and the concentric conductor both can be protected
The ground connection for equipment is grounded, but also as metallic shield, this just effectively shields leaking for electromagnetic wave, with more preferable electricity
Magnetic compatibility, to suppressing interference to play a role, and the odd harmonic in the poorly efficient higher hamonic wave of energy, improve cable
Anti-interference.
Conductor 200 presses circular stranded regular conductor using the 2nd kind, and insulation thickness is uniform, and the insulating barrier degree of eccentricity can reach
10% and less, seldom, insulation resistance is bigger for color masterbatch consumption, and insulating properties have larger lifting, and wire core is located at master core
Between in edge voids, core structure is symmetrical, and electric fields uniform during energization, cable service life is longer.
Wrapped mica tape is overlapped as flame retardant coating 210, cable run occurs to remain to protect during fire due to having on conductor 200
The energization of certain hour is held, for scene of fire rescue preferable environmental condition is provided.
The refuge floor 310 of cable core 100, metal screen layer 320, oxygen barrier layer 330, armor 340 and outer jacket 350 are respectively provided with
Good anti-flammability, the intensity of a fire of cable run can be limited in certain scope and can't aggravate when there is fire.
The oxygen barrier layer 330 of cable core 100 and serving using low smoke, zero halogen environmental protection protective cover material, when cable run in a fire
Burning discharge murder by poisoning cigarette it is less, greatly reduce the injures and deaths of personnel.
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of copper strip shielding steel tape armouring fire-retardant A classes fire resisting environmental protection lv power cable, it is characterised in that the insulated copper ribbon
Shielding steel-tape armouring fire-retardant A classes fire resisting environmental protection lv power cable includes cable core, the cable core include three major insulation cores and
Three ground insulated wire cores, every major insulation core or ground insulated wire cores include conductor, and the conductor periphery is wrapped successively from inside to outside
Flame retardant coating and insulating barrier are covered, the cable core periphery is coated with successively from inside to outside refuge floor, metal screen layer, oxygen barrier layer, armouring
Layer and serving.
2. a kind of copper strip shielding steel tape armouring according to claim 1 fire-retardant A classes fire resisting environmental protection lv power cable, it is special
Levy and be, the conductor presses circular stranded conductor for the 2nd kind.
3. a kind of copper strip shielding steel tape armouring according to claim 1 fire-retardant A classes fire resisting environmental protection lv power cable, it is special
Levy and be, the flame retardant coating is made up of main flame retardant coating and protective refractory layer, the main flame retardant coating by mica tape overlap it is wrapped form,
The protective refractory layer overlaps wrapped forming by non-woven fabrics.
4. a kind of copper strip shielding steel tape armouring according to claim 1 fire-retardant A classes fire resisting environmental protection lv power cable, it is special
Levy and be, the insulating barrier is made up of major insulation internal layer and colour code outer layer, the major insulation internal layer is exhausted by crosslinked polyethylene
Edge material is extruded and formed, and colour code outer layer is formed by crosslinked polyetylene insulated extruding with the uniform compound of color masterbatch, outside colour code
Thickness degree is the 5%～10% of thickness of insulating layer.
5. a kind of copper strip shielding steel tape armouring according to claim 1 fire-retardant A classes fire resisting environmental protection lv power cable, it is special
Levy and be, three major insulation cores contact with each other, three ground insulated wire cores are between three major insulation cores in edge voids.
6. a kind of copper strip shielding steel tape armouring according to claim 1 fire-retardant A classes fire resisting environmental protection lv power cable, it is special
Levy and be, the refuge floor is formed by halogen-free low-smoke high-flame band overlap is wrapped, the metal screen layer is that copper strips overlap is wrapped
Form, the oxygen barrier layer is to extrude low smoke, zero halogen oxygen barrier layer, and the armor is formed for double-deck galvanized steel strip gap is wrapped, described
Serving is to extrude low smoke, zero halogen polyolefin oversheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611265535.7A CN106601357A (en) | 2016-12-30 | 2016-12-30 | Copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611265535.7A CN106601357A (en) | 2016-12-30 | 2016-12-30 | Copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106601357A true CN106601357A (en) | 2017-04-26 |
Family
ID=58581823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611265535.7A Pending CN106601357A (en) | 2016-12-30 | 2016-12-30 | Copper band shielding steel band armoured flame-retardant A type fireproof environment-friendly low-voltage power cable |
Country Status (1)
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| CN (1) | CN106601357A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967842A (en) * | 2021-04-15 | 2021-06-15 | 鲁能泰山曲阜电缆有限公司 | Integrated cable for signal and digital network transmission |
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2016
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| CN112967842A (en) * | 2021-04-15 | 2021-06-15 | 鲁能泰山曲阜电缆有限公司 | Integrated cable for signal and digital network transmission |
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Application publication date: 20170426 |