CN103198891A - Power and/or telecommunications cable capable of preventing the spread of a fire - Google Patents
Power and/or telecommunications cable capable of preventing the spread of a fire Download PDFInfo
- Publication number
- CN103198891A CN103198891A CN2013100817751A CN201310081775A CN103198891A CN 103198891 A CN103198891 A CN 103198891A CN 2013100817751 A CN2013100817751 A CN 2013100817751A CN 201310081775 A CN201310081775 A CN 201310081775A CN 103198891 A CN103198891 A CN 103198891A
- Authority
- CN
- China
- Prior art keywords
- cable
- ground floor
- conducting element
- aforementioned
- fire
- 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.)
- Granted
Links
Classifications
-
- 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
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
-
- 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
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
- H01B3/082—Wires with glass or glass wool
-
- 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
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
- H01B3/084—Glass or glass wool in binder
-
- 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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
-
- 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
-
- 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
- H01B3/448—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 other vinyl compounds
-
- 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
- H01B3/46—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 silicones
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
The present invention relates to a power and/or telecommunications cable (1) comprising: - at least one elongated electrically conductive element (2), and - a thermally protective first layer (3) coaxially surrounding said electrically conductive element (2), characterized in that the thermally protective first layer (3) comprises glass fibres, with a mass per unit volume of at least 0.5 g/cm<3>.
Description
Technical field
The present invention relates to a kind of aluminum cable, it can bear extreme temperature conditions, and more particularly, can prevent the fire propagation.
The present invention has found but has not been unique application in electric power and/or field of telecommunications cables that when cable stood high temperature and/or directly faces flame, they were intended to keep moving set a period of time particularly advantageous.
Background technology
Nowadays, one of subject matter in cable industry is to improve behavior and the performance of cable under extreme temperature conditions, particularly those situations that face during fire.Particularly, in essence for the reason of safety, being necessary to improve to greatest extent the ability of cable, is to stop flame propagation on the one hand, is to bear big fire on the other hand.Stop flame to advance significantly to provide evacuate the management place extra time of proper proportion quantity and/or use suitable extinguishing device.The time that better fire resistance makes cable to work is longer, because its degraded is so not fast.
No matter it be electricity or light, be intended to transmit or transfer of data for electric power, cable schematically is made up of at least one conducting element, conducting element extends at least one insulation component.It should be noted that at least one in the insulation component also can be used as protective device, and/or cable also can comprise at least one specific protection component, the formation sheath.
Especially, the cable that has the aluminium conducting element that close combustible material is installed must be able to sustain scope can be warm from 750 ℃ to 900 ℃ fire, in order to do not propagate fire.Yet these fiery temperature are higher than the fusing point of the aluminium that is about 658 ℃.
At present, well-known, except the best insulation and/or protective material used in cable, the many misfortune in them also are extremely inflammable materials.Particularly for the situation of polyolefin and copolymer thereof, the polymer of the copolymer of polyethylene, polypropylene, ethene and vinylacetate and ethene and propylene for example.Which kind of situation no matter, in fact, this excessive inflammability proof contrast to fire-resistant necessity be inconsistent fully.
In field of cables, exist a lot of methods for improvement of the fire line of the polymer that is used as insulation and/or protective materials.
The most general solution of Shi Yonging is to use halogenated compound so far, and it to be to be dispersed in the form of the halo accessory substance in the polymer substrate, perhaps directly with the form of halogenated polymer, for example under the situation of polyvinyl chloride (PVC).Yet current regulation is to tend to ban use of such material now, is because no matter their potential toxicity and corrosivity is when manufactured materials basically, still when its combustion decomposition.This is more real because discussing decomposition not only can like outer the appearance at fire, and can when burning, have a mind to appearance.Under any circumstance, recycling of halo material still exists special problem.
Here it is, and seeking help of why increasing day by day pointed to non-halogenated fire-retardant filler, and metal hydroxides particularly, such as aluminium hydroxide or magnesium hydroxide.Yet, thereby the shortcoming that such technical scheme has is to need a large amount of inserts to reach the effect of satisfactory level, no matter is aspect the ability that stops flame propagation, still aspect fire resistance.Give an example, calculate by weight, with respect to the resin total amount, the content of metal hydroxides can reach 150% to 200% usually.At present, any mixing on a large scale all of filler can cause sizable increase in the viscosity of material, and therefore, rate of extrusion obviously reduces, thereby causes productivity to reduce greatly.Add excessive flame-retardant additive and also can cause the machinery of cable and the remarkable deterioration of electrical characteristic.
In its prior art, file GB2035666 has described a kind of cable that can at high temperature work, and this cable comprises at least one aluminium or copper conductor, and vertical or helically is coated with the mineral insulation layer based on glass fibre.Studies show that this material is intractable, and therefore manufacture process becomes tediously long and trouble.And, in described file, studies show that this layer glass fibre shown the unsteadiness of its behavior when about 400-500 ℃ temperature, and in the time of about 700-800 ℃, this glass fibre having the viscosity phase, this makes it not too insulate.
Therefore, the objective of the invention is by advising that a kind of fire-resistant electric power and/or telecommunication cable overcome shortcoming of the prior art, by abundant improved mechanical property particularly is provided, described cable also can prevent the problems of the prior art, and has operation function simultaneously during fire.
Summary of the invention
A theme of the present invention is a kind of electric power and/or telecommunication cable, and it comprises:
-at least one elongated conducting element, and
-coaxially round first thermal-protective coating of described conducting element,
It is characterized in that heat protection ground floor comprises glass fibre, the quality of per unit volume is 0.5g/cm at least
3
Verified, the object (curtain etc.) around such layer of glass can be transmitted to by described cable restriction fire, thus make described cable have fire resistance, and guarantee operation function simultaneously.Particularly, described heat protection ground floor prevents the conducting element fusing, particularly when this element is made of aluminum.Therefore, the thermodynamic barrier that is formed by this layer glass fibre prevents the fusing of described conducting element, and therefore, the material around also preventing is lighted, and this may be that drippage by melting aluminum causes, and makes cable to move simultaneously, although big fire has taken place.
The fire resistance that therefore described glass fibre ground floor provides is better than the glass layer of describing in file GB2035666.
In a preferred embodiment, described ground floor can comprise at least one glass fiber tape.Described band is especially spirally round this conducting element.
Described glass fiber tape can coat this conducting element, and the degree of overlapping that has is about 15%-20%.
The quality of the per unit volume that ground floor of the present invention can have is 0.8g/cm at least
3, and preferably be 1g/cm at least
3
The no more than 2g/cm of the quality of the per unit volume that described ground floor can have
3, and no more than 1.5g/cm preferably
3
Particularly preferably, the mass range of the described ground floor per unit volume that can have is for from 1.0g/cm
3To 1.5g/cm
3
Ground floor of the present invention can preferably be used as thermodynamic barrier, particularly flame barrier.For at least 800 ℃ temperature and at least 1000 ℃ temperature preferably, can keep the integrality of described conducting element.Conducting element fusing when therefore, this prevents fire.Advantageously, the ground floor of the present invention conductive coefficient that can have is at most 0.25W/m ℃ (every meter degree centigrade of watt).
Preferably, the thickness range of described ground floor is from 0.10mm to 0.40mm.For example, if this ground floor only comprises a glass fiber tape, thickness will be about 0.10mm so, and if it comprise two, thickness will be about 0.40mm so.
Preferably, the mass range of the per unit area that has of described ground floor (being made by glass fibre) can be from 120g/cm
3To 160g/cm
3
Conducting element of the present invention can be the material of selecting from aluminium (Al) or aluminium alloy.Aluminium alloy can be selected from copper aluminium, nickel aluminium and copper nickel aluminium or combination wherein.
Described conducting element for example can be sub-thread type or multiply type.
Advantageously, cable of the present invention can comprise the second layer round described ground floor.This second layer can be by according to well known to a person skilled in the art extruding or wrapped formation of technology, thus the second layer only formed by one or several sublayers, preferably such as being two.
Preferably, the described second layer is electric insulation, and can be by from synthetic rubber, for example silicon rubber, and polyolefin, and the ethylene copolymer in ethylene-vinyl acetate (EVA) type for example, perhaps the material of selecting in the combination is wherein made.
Advantageously, the thickness range of the described second layer is from 0.5mm to 3.0mm.
When cable of the present invention comprised the described second layer, ground floor can directly contact with conducting element physics, and the described second layer can directly contact with ground floor physics.Described cable also can comprise the protective sleeve round the second layer.
In a particularly preferred embodiment, described electric power and/or telecommunication cable are insulated electric conductors, and wherein elongated conducting element is center part.
Theme of the present invention still is above-described use for the fiery cable of propagating of restriction.
Description of drawings
In order to understand the present invention better, this specification will be with reference to the accompanying drawings, and the accompanying drawing that provides is for schematic purpose purely, do not have any implicit restriction.
In this width of cloth figure:
-Fig. 1 shows the perspective view of electric power according to the preferred embodiment of the invention and/or telecommunication cable partly cut-away.
Embodiment
Embodiment:
Example 1: according to the example (Fig. 1) of cable composition of the present invention
For clarity sake, only schematically showing understanding the present invention among Fig. 1 is the element that is necessary, and does not draw in proportion.
Power cable 1 shown in Fig. 1 is insulated electric conductor, it comprises particularly multiply type center conductive element 2 made of aluminum, and successively and coaxially around the ground floor 3 of this element, this ground floor 3 is formed by the glass fibre bar (band) that Stevtiss or Tisstech company sell, or is formed by the glass fiber tape of the reference SFR10/103 of Scapa company sale.
This glass fiber tape is coating described conducting element, has the degree of overlapping of about 15%-20%, avoids the influence of flame thereby all surface of guaranteeing this conducting element is protected.The second layer 4 places on this glass fiber tape, and the second layer 4 is made up of two sublayer extruded materials based on silicon rubber: the black material that one deck is made with reference to the ethylene copolymer by the European standard EN50382-1 that is used for rolling stock of EM107 with reference to the white material of being made by polysiloxane polymer and one deck of EI111.This second layer 4 is optional layers.
In this example, (that is, ground floor 3) thickness is 0.12mm to described band, and the quality of its per unit volume is 1.16g/cm
3The thickness of the described second layer 4 is about 2.7mm.
Example 2: be used for preparation according to the process of cable of the present invention
Described multiply aluminium electric conductor 2 by as the ground floor glass fiber tape in example 1, mentioned round.Then by above-mentioned two-layer silicon rubber and polyolefinic extruding and this glass fiber tape is coated.
For a person skilled in the art, wrapped and extruding technology is known, and will not be further explained in detail in present patent application.
Experiment test
To carrying out fire-resistant test as the cable of in example 1, describing.The blowtorch of 850 ℃ of flames of emission is placed near according to cable of the present invention 1 hour, thereby flame touches the part of described cable.Also a piece of paper is placed near this cable, at a distance of 30cm, be kept away from torch flame simultaneously approximately.
Find after one hour that the second layer of being made by silicon rubber and polyolefin has caught fire, and has been burnt fully in the zone that contacts with flame, still described multiply aluminium conductor is owing to the effect of glass fiber tape remains intact.And this band also remains intact.In addition, this paper of placing apart from cable 30cm does not catch fire, and has therefore shown according to cable of the present invention and has not propagated fire.
Although the present invention is described in conjunction with the specific embodiments, obviously, it never is limited to this, and it comprises all equivalent technologies of institute's describing method and combination with it, and prerequisite is if they fall into scope of the present invention.
Claims (11)
1. electric power and/or telecommunication cable (1), it comprises:
-at least one elongated conducting element (2), and
-protect ground floor (3) round the heat of described conducting element (2) coaxially,
It is characterized in that described heat protection ground floor (3) comprises glass fibre, the quality of the per unit volume that has is 0.5g/cm at least
3
2. cable according to claim 1 (1) is characterized in that, described ground floor comprises at least one glass fiber tape.
3. cable according to claim 1 and 2 (1) is characterized in that, the quality of the per unit volume that described ground floor has is 0.8g/cm at least
3, and preferably be 1g/cm at least
3
4. according to each described cable (1) in the aforementioned claim, it is characterized in that the no more than 2g/cm of the quality of the per unit volume that described ground floor has
3, and no more than 1.5g/cm preferably
3
5. according to each described cable (1) in the aforementioned claim, it is characterized in that the quality of the per unit area that described ground floor (3) has is about 120g/m
2To 160g/m
2
6. according to each described cable (1) in the aforementioned claim, it is characterized in that the thickness of described ground floor (3) is about 0.10mm to 0.40mm.
7. according to each described cable (1) in the aforementioned claim, wherein said conducting element (2) is made by the material of selecting from aluminium (Al) and aluminium alloy.
8. according to each described cable (1) in the aforementioned claim, it is characterized in that it comprises the second layer round described ground floor.
9. cable according to claim 8 (1) is characterized in that, the described second layer is made by the material of selecting from synthetic rubber and polyolefin or their combination.
10. according to each described cable (1) in the aforementioned claim, it is characterized in that described ground floor (3) directly contacts with described conducting element (2) physics.
11. according to each described cable (1) in the aforementioned claim, it is characterized in that it is insulated electric conductor, wherein said conducting element (2) is center part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1250123 | 2012-01-05 | ||
| FR1250123A FR2985596B1 (en) | 2012-01-05 | 2012-01-05 | ALUMINUM CABLE THAT PREVENTS THE PROPAGATION OF A FIRE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103198891A true CN103198891A (en) | 2013-07-10 |
| CN103198891B CN103198891B (en) | 2019-01-15 |
Family
ID=47427273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310081775.1A Active CN103198891B (en) | 2012-01-05 | 2013-01-04 | The electric power and/or communication cable that can prevent fire from propagating |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2613326B1 (en) |
| CN (1) | CN103198891B (en) |
| AU (1) | AU2013200032A1 (en) |
| CA (1) | CA2801931A1 (en) |
| FR (1) | FR2985596B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116453751B (en) * | 2023-03-31 | 2024-06-04 | 江苏赛特电气有限公司 | Comprehensive protection B1-level flame-retardant cable for rail transit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3602636A (en) * | 1969-11-06 | 1971-08-31 | Reynolds Metals Co | Wrapped service entrance cable |
| CN2817002Y (en) * | 2005-08-05 | 2006-09-13 | 江苏江扬电缆有限公司 | Fire-retardant cable |
| CN201402665Y (en) * | 2009-05-06 | 2010-02-10 | 四川明星电缆股份有限公司 | Medium-and-high voltage fire-proof cable |
| CN201698802U (en) * | 2010-06-30 | 2011-01-05 | 四川川东电缆有限责任公司 | Fire-resistant cable |
| CN202076045U (en) * | 2011-06-10 | 2011-12-14 | 江苏上上电缆集团有限公司 | Medium voltage fireproof cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2035666A (en) * | 1979-10-26 | 1980-06-18 | Pirelli Brasil | Electric cable resistant to high temperatures |
-
2012
- 2012-01-05 FR FR1250123A patent/FR2985596B1/en not_active Expired - Fee Related
-
2013
- 2013-01-04 CA CA 2801931 patent/CA2801931A1/en not_active Abandoned
- 2013-01-04 CN CN201310081775.1A patent/CN103198891B/en active Active
- 2013-01-04 EP EP13150213.0A patent/EP2613326B1/en active Active
- 2013-01-04 AU AU2013200032A patent/AU2013200032A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3602636A (en) * | 1969-11-06 | 1971-08-31 | Reynolds Metals Co | Wrapped service entrance cable |
| CN2817002Y (en) * | 2005-08-05 | 2006-09-13 | 江苏江扬电缆有限公司 | Fire-retardant cable |
| CN201402665Y (en) * | 2009-05-06 | 2010-02-10 | 四川明星电缆股份有限公司 | Medium-and-high voltage fire-proof cable |
| CN201698802U (en) * | 2010-06-30 | 2011-01-05 | 四川川东电缆有限责任公司 | Fire-resistant cable |
| CN202076045U (en) * | 2011-06-10 | 2011-12-14 | 江苏上上电缆集团有限公司 | Medium voltage fireproof cable |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2985596A1 (en) | 2013-07-12 |
| CA2801931A1 (en) | 2013-07-05 |
| CN103198891B (en) | 2019-01-15 |
| FR2985596B1 (en) | 2015-07-17 |
| AU2013200032A1 (en) | 2013-07-18 |
| EP2613326B1 (en) | 2016-05-04 |
| EP2613326A1 (en) | 2013-07-10 |
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