CN107863185A - A kind of power cable for possessing excellent fire-retardancy - Google Patents
A kind of power cable for possessing excellent fire-retardancy Download PDFInfo
- Publication number
- CN107863185A CN107863185A CN201711251385.9A CN201711251385A CN107863185A CN 107863185 A CN107863185 A CN 107863185A CN 201711251385 A CN201711251385 A CN 201711251385A CN 107863185 A CN107863185 A CN 107863185A
- Authority
- CN
- China
- Prior art keywords
- layer
- external sheath
- fire
- stranding
- insulating barrier
- Prior art date
- 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
-
- 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
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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 invention discloses a kind of power cable for possessing excellent fire-retardancy, including copper conductor, insulating barrier, the copper conductor is combined into insulated wire cores and is twisted as a stranding with insulating barrier, lapping layer is provided with the periphery of the stranding, inner liner, internal layer external sheath layer, outer layer external sheath layer are coated with successively in the periphery of at least two strandings；The insulating barrier of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof by being made, the inner liner 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.Copper conductor of the present invention and insulating barrier are combined into insulated wire cores and are twisted as a stranding and wrapped, some stranding peripheries set inner liner, 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 fire resistance, electrical insulation properties.
Description
Technical field
The present invention relates to field of cable technology, relates generally to a kind of power cable for possessing excellent fire-retardancy.
Background technology
With the continuous progress of human civilization, the factor for inducing fire increases considerably, and the frequency that fire occurs increases
Greatly, serious threat the safety of life and property of people, and fire has become " the terrified killer " of modern society.
Since the 1980s, multiple cable factories of China start to develop flame-proof power cable, so far existing decades
Course.Shown according to the statistics of national cause of fire in 2014：30% causes for the electrical equipment malfunction of electric wiring, its
Accounting highest, the anti-flammability of electric wiring are 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 are supplied using A class flame retardant cables
Electricity, to ensure the person of people and property safety.
The requirement of the fire resistance 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 in epoch, skyscraper and a large amount of construction of large scale business synthesis and people
Life security and environmental consciousness constantly strengthen, fire-retardant A classes cable can not meet the needs of people.With the hair of society
Exhibition, urbanization process increasingly accelerates and people gradually step up to awareness of safety such as fire-fighting, fire prevention, excellent fireproof performance electric power electricity
The market prospects of cable will be boundless.
The content of the invention
The technical problems to be solved by the invention be to provide a kind of temperature resistant grade it is high, can fire insulation cooling, there is excellent resistance
Performance, electrical insulation properties are fired, nontoxic smokeless, good environmental protection, external force resistance hit during burning, and decay resistance preferably possesses
The power cable of excellent fire-retardancy.
The technical problems to be solved by the invention can be adopted the following technical scheme that to realize：
A kind of power cable for possessing excellent fire-retardancy, it is characterised in that including copper conductor, be coated on the copper conductor
Periphery on insulating barrier, the copper conductor and insulating barrier are combined into insulated wire cores and are twisted as a stranding, in the stranding
The lapping layer that heat forms carburization zone is absorbed when burning is provided with periphery, is coated with successively in the periphery of at least two strandings
Inner liner, internal layer external sheath layer, outer layer external sheath layer；
For the insulating barrier by being made of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof, the inner liner 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 uses to be made of halogen-free and low-smoke flame-retardant polyolefin material.
In a preferred embodiment of the invention, glass cloth tape is wrapped forms using dual-layer high-resistance combustion for the lapping layer.
In a preferred embodiment of the invention, the gap location of the stranding is provided with packed layer, the packed layer
It is made of low-smoke bittern-free highly fire-proof gasket for packing material.
In a preferred embodiment of the invention, it is provided with armouring between the inner liner and internal layer external sheath layer
Layer, the armor are formed by double-deck galvanized steel strip is wrapped.
The beneficial effects of the invention are as follows：A kind of power cable for possessing excellent fire-retardancy, copper conductor combine with insulating barrier
Into insulated wire cores and it is twisted inner liners, double external sheath layers is set for a stranding and wrapped, some stranding peripheries, each layer passes through oxygen barrier
Fire proofing is made, temperature resistant grade is high, can fire insulation cooling, there are excellent fire resistance, electrical insulation properties；Adopt in cable core gap
It is filled with low-smoke bittern-free highly fire-proof gasket for packing, nontoxic smokeless, good environmental protection during burning；It is wrapped using double-deck galvanized steel strip
Sheathed structure, can external force resistance hit, decay resistance is preferable.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the power cable for possessing excellent fire-retardancy of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1, what is provided in figure is a kind of power cable for possessing excellent fire-retardancy, including copper conductor 100, cladding
Insulating barrier 200 on the periphery of copper conductor 100, for conductor using copper conductor 100 is pressed, its performance meets GB/T 3956-2008
Requirement；Insulating barrier 200 has excellent fire resistance 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, nontoxic smokeless during burning.Copper conductor 100 is combined into insulation with insulating barrier 200
Core is simultaneously twisted as a stranding, the lapping 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 by the way of dual-layer high-resistance combustion glass cloth tape is wrapped,
Product is absorbed heat in burning, form carburization zone, completely cut off gas-bearing formation, prevent propagation of flame, reduce cable internal temperature.
The gap location of stranding is provided with packed layer 400, packed layer 400 uses low-smoke bittern-free highly fire-proof gasket for packing material system
Into；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 inner liner 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 inner side of inner liner 500 is provided with four strandings and the copper conductor 100 of at least one composition cable counts
Measure unequal, square insulation sleeve is provided with the periphery of four strandings, packed layer 400 is arranged on 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 inner liner 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 dust, bentonite, mica powder
Into.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 dust 3-8, bentonite 3-10, mica powder 3-10；Preferably, prevent fires
The formula each component content ratio of separation layer 900 is：Sodium metasilicate 30, perlite 4, calcium hydroxide 7, aluminium hydroxide 30, magnesium hydroxide
3, ceramic powder 6, glass dust 5, bentonite 6, mica powder 7.
Inner liner 500 is made of A class halogen-free environment-friendly flame-proof cable material of polyolefin, and the material of inner liner 500 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 double-deck galvanized steel strip is wrapped, have under flame well gear fire action, can prevent flame to
Spread inside cable, enhancing cable external force resistance hits, and decay resistance is preferable.
Internal layer external sheath layer 700 is the oxygen barrier layer with superelevation oxygen index (OI), is the characteristics of special fire insulation cooling oxygen barrier layer
Substantial amounts of hydrone can be generated by meeting fire, can play a part of cooling, and can produce hard ceramic-like housing rapidly, can prevent fire
Flame inwardly spreads, and protects cable core not scalded by flame, further improves the fire resistance 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, is improved cable and normally lay and make
Mechanical performance in；Oversheath uses special bilayer combination oversheath, both ensure that the overall flame performance of cable, protects again
The mechanical and physical performance of cable jacket is demonstrate,proved.
In summary, copper conductor 100 of the present invention and insulating barrier 200 be combined into insulated wire cores and be twisted as a stranding and around
Bag, some stranding peripheries set inner liner 500, double external sheath layers, have more excellent fire resistance, as shown in the table：
Each layer is made up of oxygen barrier or fire proofing, and processing characteristics is good, is readily produced, and material is cost-effective, product section
Can be environmentally friendly, securely and reliably, occur to be more conducive to the evacuation of personnel during fire and withdraw, ensured the safety of life and property of the people.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and together
Defined Deng thing.
Claims (4)
1. a kind of power cable for possessing excellent fire-retardancy, it is characterised in that including copper conductor, be coated on the copper conductor
Insulating barrier on periphery, the copper conductor and insulating barrier are combined into insulated wire cores and are twisted as a stranding, in the week of the stranding
The lapping layer that heat forms carburization zone is absorbed when burning is provided with side, is coated with successively in the periphery of at least two strandings interior
Lining, internal layer external sheath layer, outer layer external sheath layer；
For the insulating barrier by being made of 105 DEG C of halogen-free and low-smoke flame-retardant polyolefin materials of heatproof, the inner liner 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 for possessing excellent fire-retardancy as claimed in claim 1, it is characterised in that the lapping layer is adopted
With dual-layer high-resistance combustion, glass cloth tape is wrapped forms.
3. a kind of power cable for possessing excellent fire-retardancy as claimed in claim 2, it is characterised in that in the stranding
Gap location is provided with packed layer, and the packed layer is made of low-smoke bittern-free highly fire-proof gasket for packing material.
4. a kind of power cable for possessing excellent fire-retardancy as claimed in claim 3, it is characterised in that in the inner liner
Armor is provided between internal layer external sheath layer, the armor is formed by double-deck galvanized steel strip is wrapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251385.9A CN107863185A (en) | 2017-12-01 | 2017-12-01 | A kind of power cable for possessing excellent fire-retardancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251385.9A CN107863185A (en) | 2017-12-01 | 2017-12-01 | A kind of power cable for possessing excellent fire-retardancy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107863185A true CN107863185A (en) | 2018-03-30 |
Family
ID=61704696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711251385.9A Pending CN107863185A (en) | 2017-12-01 | 2017-12-01 | A kind of power cable for possessing excellent fire-retardancy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107863185A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826633Y (en) * | 2005-09-14 | 2006-10-11 | 扬州亚光电缆有限公司 | Metal shielding type power cable |
| CN200976294Y (en) * | 2006-10-30 | 2007-11-14 | 扬州亚光电缆有限公司 | Power cable for offshore oil platform |
| CN203520988U (en) * | 2013-10-21 | 2014-04-02 | 辽宁通用电缆有限公司 | Zero-halogen low-smoke cables flame-retardant medium-voltage fireproof cable |
| CN205564360U (en) * | 2016-02-03 | 2016-09-07 | 上海胜华电气股份有限公司 | Fire -retardant power cable of super A class |
| CN205666090U (en) * | 2016-04-21 | 2016-10-26 | 湖北龙腾红旗电缆(集团)有限公司 | Energy -concerving and environment -protective type power cable of crosslinked |
| CN207663817U (en) * | 2017-12-01 | 2018-07-27 | 金杯电工衡阳电缆有限公司 | A kind of power cable having excellent fire-retardancy |
-
2017
- 2017-12-01 CN CN201711251385.9A patent/CN107863185A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826633Y (en) * | 2005-09-14 | 2006-10-11 | 扬州亚光电缆有限公司 | Metal shielding type power cable |
| CN200976294Y (en) * | 2006-10-30 | 2007-11-14 | 扬州亚光电缆有限公司 | Power cable for offshore oil platform |
| CN203520988U (en) * | 2013-10-21 | 2014-04-02 | 辽宁通用电缆有限公司 | Zero-halogen low-smoke cables flame-retardant medium-voltage fireproof cable |
| CN205564360U (en) * | 2016-02-03 | 2016-09-07 | 上海胜华电气股份有限公司 | Fire -retardant power cable of super A class |
| CN205666090U (en) * | 2016-04-21 | 2016-10-26 | 湖北龙腾红旗电缆(集团)有限公司 | Energy -concerving and environment -protective type power cable of crosslinked |
| CN207663817U (en) * | 2017-12-01 | 2018-07-27 | 金杯电工衡阳电缆有限公司 | A kind of power cable having excellent fire-retardancy |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180330 |
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| RJ01 | Rejection of invention patent application after publication |