CN203644445U - Flame-retardant composite fireproof cable - Google Patents

Flame-retardant composite fireproof cable Download PDF

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Publication number
CN203644445U
CN203644445U CN201320853407.XU CN201320853407U CN203644445U CN 203644445 U CN203644445 U CN 203644445U CN 201320853407 U CN201320853407 U CN 201320853407U CN 203644445 U CN203644445 U CN 203644445U
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CN
China
Prior art keywords
retardant
fire
layer
flame
cable
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Withdrawn - After Issue
Application number
CN201320853407.XU
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Chinese (zh)
Inventor
卢宇
金世强
李高强
李宁
马俊杰
闫东东
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JINSHUI CABLE GROUP CO Ltd
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JINSHUI CABLE GROUP CO Ltd
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Priority to CN201320853407.XU priority Critical patent/CN203644445U/en
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Publication of CN203644445U publication Critical patent/CN203644445U/en
Withdrawn - After Issue legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

The utility model relates to a flame-retardant composite fireproof cable. The flame-retardant composite fireproof cable is characterized in that the cable comprises a cable core formed by at least two intertwisted copper wire conductors which are wrapped by mica fireproof layers, insulating damp-proof layers, aluminium alloy interlocking armor barrier layers, and flame-retardant layers in sequence from inside to outside, and cabling belting, an oxygen isolation layer, a ceramic fireproof layer, an interlocking armor layer, and a flame-retardant outer sheath layer which wrap the cable core in sequence from inside to outside, and flame-retardant fillers filled between the cable core and the cabling belting.

Description

A kind of fire-retardant composite fire-proof cable
Technical field
The utility model relates to a kind of fire-retardant composite fire-proof cable.
Background technology
What the fire-resisting cable of prior art adopted mostly is magnesium oxide mineral insulation fire-resisting cable and the fire-resisting cable with Mica tape inorganic insulation.Magnesium oxide mineral insulation fire-resisting cable advantage is that the magnesian fusing point of insulant is 2800 ℃, in the time of the flame combustion of 750 ℃, its construction of cable there will not be problem, there is excellent fire resistance, but this rated voltage for cable only reaches 750V, it is numerous and diverse that it manufactures production technology, and the energy consumption of manufacture process is large, equipment investment costliness.Because this cable is that non-continous way is produced, yield poorly, manufacturing cost is high, incompatible with the growing market demand.The factory length of cable is limited, lays as long distance, need repeatedly joint, and the easily moisture absorption of magnesium oxide causes cable to decline at the insulation resistance of joint, affects electric property.The bending property of this cable is poor in addition, mounting and installation inconvenience, and the scope of application is subject to certain limitation.With the advantage of the fire-resisting cable of Mica tape inorganic insulation be that production technology is simple, cable insulation adopts Mica tape, sheath adopts the vertical bag of soft copper band to squeeze argon and is welded, its cable can be produced by big-length continuously.But shortcoming is to need in process of production multilayer wrapped, due to process conditions restriction, overlapping the slot place often easily causes defect, its insulation property of mica tape moisture-sensitive will decline, in addition, and due to the restriction of capacity of equipment, for electric cable with large cross-section, in technique, cannot realize.After burning, mica tape embrittlement easily comes off, and also can cause fire resistance not good, thereby is difficult to guarantee safe and smooth under fire condition of power supply electric power facility.
Summary of the invention
The purpose of this utility model provides a kind of fire-retardant composite fire-proof cable for existing weak point in above-mentioned prior art just.Fireproof cable of the present utility model adopts twisted copper wires to do conductor, the mica of dielectric property excellence, the inorganic band such as silicon dioxide and damp-proof layer do and insulate, aluminium alloy lock armo does phase-splitting barriers and oxygen barrier layer, ceramic fireprotection layer, total copper lock armo layer and fire proofing do sheath, make cable both retain mineral insulated cable high temperature resistant of prior art, fire prevention, LSZH, the characteristic such as ageing-resistant, overcome again the existing bending property of prior art poor simultaneously, the easily moisture absorption, joint is many, installation inconvenience, and manufacturing equipment costliness, complex process, yield poorly, energy consumption is high, the restricted shortcomings that waits of factory length.
The purpose of this utility model can realize by following technique measures:
Fire-retardant composite fire-proof cable of the present utility model comprises that at least two are enclosed with respectively mica fireprotection layer from the inside to the outside successively, the insulated damp-proof layer being formed by crosslinked polyethylene material, aluminium alloy lock armo barrier layer, the cable core that the twisted copper wires conductor of the flame-retardant layer being made up of high flame retardant gluing glass fiber belt forms, be wrapped in successively from the inside to the outside the stranding band being formed by high flame retardant gluing glass fiber material outside cable core, polyolefin oxygen barrier, the ceramic fireprotection layer being formed by overlapping wrapped ceramic fire guard, lock armo layer, the fire-retardant outer jacket being formed by flame-retardant low-smoke halogen-free polyolefin jacket, and be filled in the flame-retardant filler between cable core and stranding band.
The fire-retardant oxygen barrier cool principle of described oxygen barrier layer is: the one, when hydroxide is burned, to absorb the amount of heat in surrounding air, and this chemical reaction is the endothermic reaction; The 2nd, the hydrone that it produces also needs to absorb heat in burning evaporation process, has virtually reduced the temperature on comburant surface; The 3rd, it has produced insoluble not molten metal oxide shell, and prevention has cut off oxygen and contacted with organic.Form good protective barrier.
The thickness of mica fireprotection layer described in the utility model is 0.98 ~ 1.26mm; Described insulated damp-proof layer is extruded in outside mica fireprotection layer, and thickness is 0.5 ~ 1.7mm; The thickness on described aluminium alloy lock armo barrier layer is 0.2 ~ 0.8mm; Beyond described flame-retardant layer, putting up wrapped mode is arranged on outside barrier layer; Described flame-retardant filler adopts fire-retardant gasket for packing to form, and its oxygen index is greater than 30%; Described stranding band attach most importance to lap wound bag the fire-retardant gluing glass fiber of two floor heights material form, oxygen index is greater than 55%; Described oxygen barrier layer is extruded in outside stranding band, and oxygen index is greater than 42%; Described ceramic fireprotection layer is to be made up of overlapping wrapped ceramic fire guard, and thickness is 5.6 ~ 7.2mm; Described lock armo layer is to be made up of (specifically snake tubulose copper sheath, lock armo layer is to be the mutual hasp in S shape edge by copper strips, forms and has flexible snake tubulose copper sheath, can bear radial pressure, protection cable is avoided extraneous mechanical damage, anti-fiery calcination, makes this construction of cable more stable, and bending property is good, fire protecting performance excellence, its copper belt interlocking armored sheath is than mineral insulated cable copper sheath softness, and lightweight), thickness is 0.3 ~ 0.8mm; The oxygen index of described fire-retardant outer jacket is greater than 30%.
The beneficial effects of the utility model are as follows:
The utility model is that fire-retardant fire-retardant highest level category-A and excellent fire protecting performance are combined as a whole, and is the upgrade version that mineral insulated cable updates, and has the following advantages:
1) flexibility is good.Product adopts stranded conductor and lock armo metal sheath etc. to improve the soft structure design of bending property, makes cable have less bending radius.For product big-length is produced, is installed, transportation, reduce the transition joint condition of providing convenience less.
2) fire protecting performance excellence.The employing various structures of cable and different fire proofing material, therefore determined the non-ignitibility of the fire-retardant barrier of cable itself.Ceramic fire guard is nontoxic, tasteless at normal temperatures, has good flexibility and elasticity, and it possesses the characteristic such as high-low temperature resistant, weather-proof aging, good electric insulation.Under its high temperature and flame calcination more than 500 ℃, its organic principle changes into hard ceramics shape material within the anxious short time, has formed the flame barrier layer with good insulation properties.And increase with calcination time, temperature raises, and its hardness is more obvious.Its heat-insulating, fire-preventing effect is very good, guarantees that outside flame heat regulating is difficult for passing on the insulating barrier in cable, can effectively protect the insulated wire cores of cable.Its fire resistance test not only meets the requirement of GB GB/T 19216, also can meet the requirement of the A level, B level and the C level that stipulate in Britain BS6387 standard.Meanwhile, in burning, can also tolerate water spray (W level) and mechanical shock (X, Y, Z level).
3) voltage withstand class is high, long service life.Mineral insulation fire-resisting cable rated voltage only reaches 750V.And this rated voltage for cable reaches 1000V.Have adequately protecting of aluminium alloy and copper interlocking band, useful life is higher than general cable.According to the cable of same cross-sectional, fire-retardant category-A composite fire-proof cable can not only transmit higher electric current and can bear larger overload.
4) moistureproof, anticorrosion.Sandwich construction adds metal interlocking band and has good damp proof insulation, prevents chemical corrosion effect, even if the no power operation of cable long period also can not reduce insulation property because of the material moisture absorption.
5) low cigarette, Halogen.The various materials that fire-retardant category-A composite fire-proof cable adopts can not emitted a large amount of smog and pernicious gas under the state of flame combustion, are a kind of Green Products.Adopt flame-retardant polyolefin sheathedly, carry out flue gas disperse test according to IEC 1034, test light transmittance reaches more than 60%; No acidic air release.
6) mechanical strength is high.Can bear stronger mechanical external force drawing and impact.
7) shielding.Metal interlocking band has shielding action, can prevent electromagnetic interference.
8) simple installation.Install, continue and be close with common plastic insulating power cable, do not need special accessory and tool.
Accompanying drawing explanation
Fig. 1 is cross-sectional structure figure of the present utility model.
Embodiment
The utility model is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, fire-retardant composite fire-proof cable of the present utility model comprises that at least two are enclosed with respectively mica fireprotection layer 2 from the inside to the outside successively, the insulated damp-proof layer 3 being formed by crosslinked polyethylene material, aluminium alloy lock armo barrier layer 4, the cable core that the twisted copper wires conductor 2 of the flame-retardant layer 5 being made up of high flame retardant gluing glass fiber belt forms, be wrapped in successively from the inside to the outside the stranding band 7 being formed by high flame retardant gluing glass fiber material outside cable core, oxygen barrier layer 8, the ceramic fireprotection layer 9 being formed by overlapping wrapped ceramic fire guard, lock armo layer 10, the fire-retardant outer jacket 11 being formed by flame-retardant low-smoke halogen-free polyolefin jacket, and be filled in the flame-retardant filler 6 between cable core and stranding band 7.
Described oxygen barrier layer is to be by percentage by weight: the Mg (OH) 2 of the polyolefin of ##%, the AL of ##% (OH) 3, ##% is prepared from.Its fire-retardant oxygen barrier cool principle is: the one, when hydroxide is burned, to absorb the amount of heat in surrounding air, and this chemical reaction is the endothermic reaction; The 2nd, the hydrone that it produces also needs to absorb heat in burning evaporation process, has virtually reduced the temperature on comburant surface; The 3rd, it has produced insoluble not molten metal oxide shell, and prevention has cut off oxygen and contacted with organic, has formed good protective barrier.
More specifically: described twisted copper wires conductor 1 is for pressing twisted copper wires, and nominal cross can be: 1.5 mm 2, 2.5 mm 2, 4 6mm 2, 10mm 2, 16mm 2, 25mm 2, 35mm 2, 50mm 2, 70mm 2, 95mm 2, 120mm 2, 150mm 2, 185mm 2, 240mm 2, 400mm 2.Cable core number is 2 cores, 3 cores, 4 cores, 5 cores, 3+1 core, 4+1 core, 3+2 core.
The thickness of mica fireprotection layer described in the utility model is 0.98 ~ 1.26mm; Described insulated damp-proof layer is extruded in outside mica fireprotection layer, and thickness is 0.5 ~ 1.7mm; The thickness on described aluminium alloy lock armo barrier layer is 0.2 ~ 0.8mm; Beyond described flame-retardant layer, putting up wrapped mode is arranged on outside barrier layer; Described flame-retardant filler adopts fire-retardant gasket for packing to form, and its oxygen index is greater than 30%; Described stranding band attach most importance to lap wound bag the fire-retardant gluing glass fiber of two floor heights material form, oxygen index is greater than 55%; Described oxygen barrier layer is extruded in outside stranding band, and oxygen index is greater than 42%; Described ceramic fireprotection layer is to be made up of overlapping wrapped ceramic fire guard, and thickness is 5.6 ~ 7.2mm; Described lock armo layer is to be made up of (specifically snake tubulose copper sheath, lock armo layer is to be the mutual hasp in S shape edge by copper strips, forms and has flexible snake tubulose copper sheath, can bear radial pressure, protection cable is avoided extraneous mechanical damage, anti-fiery calcination, makes this construction of cable more stable, and bending property is good, fire protecting performance excellence, its copper belt interlocking armored sheath is than mineral insulated cable copper sheath softness, and lightweight), thickness is 0.3 ~ 0.8mm; The oxygen index of described fire-retardant outer jacket is greater than 30%.
The utility model utilizes the lock armo of two kinds of fire proofing materials and unlike material to form fire-retardant category-A composite fire-proof cable.Himself characteristic has fire prevention completely, flame retardant rating is high, overload protection ability is strong, working temperature is high, rated voltage can reach 1000V, anticorrosion, good bending property, long service life, can produce continuously, lay the advantages such as flexible by big-length.Its fire protecting performance can match in excellence or beauty with mineral insulated cable, and fire resistance test not only meets the requirement of GB GB/T 19216, applies 1000V voltage between conductor, the 180min that burns in flame temperature is the flame of 750~800 ℃, and cable neither short circuit is not also opened a way.Also can meet the A level stipulating in Britain BS6387 standard: 650 ℃, 3h; X level: 650 ℃, 15min(mechanical shock).B level: 750 ℃, 3h; Y level: 750 ℃, 15min(mechanical shock).C level: 950 ℃, 3h; Z level: 950 ℃, 15min(mechanical shock).W level: 650 ℃, 15min(water spray).In process of the test, cable neither short circuit is not also opened a way.This cable is fire-retardant category-A, is fire-retardant highest level, and anti-flammability in order to extinguish, reduce or suppress the burning of material, adds fire retardant conventionally in material, makes material in the time of burning, have the performance that stops or delay propagation of flame.In the situation that burning things which may cause a fire disaster disappears outside, through can certainly putting out after a while.In structural design, for reaching fire-retardant category-A requirement, adopt wrapped high flame retardant band, fire-retardant filling and oxygen barrier layer, and adopt fire-retardant oversheath to realize.

Claims (2)

1. a fire-retardant composite fire-proof cable, it is characterized in that: it comprises that at least two are enclosed with respectively mica fireprotection layer from the inside to the outside successively, the insulated damp-proof layer being formed by crosslinked polyethylene material, aluminium alloy lock armo barrier layer, the cable core that the twisted copper wires conductor of the flame-retardant layer being made up of high flame retardant gluing glass fiber belt forms, be wrapped in successively from the inside to the outside the stranding band being formed by high flame retardant gluing glass fiber material outside cable core, polyolefin oxygen barrier, the ceramic fireprotection layer being formed by overlapping wrapped ceramic fire guard, lock armo layer, the fire-retardant outer jacket being formed by flame-retardant low-smoke halogen-free polyolefin jacket, and be filled in the flame-retardant filler between cable core and stranding band.
2. fire-retardant composite fire-proof cable according to claim 1, is characterized in that: the thickness of described mica fireprotection layer is 0.98 ~ 1.26mm; Described insulated damp-proof layer is extruded in outside mica fireprotection layer, and thickness is 0.5 ~ 1.7mm; The thickness on described aluminium alloy lock armo barrier layer is 0.2 ~ 0.8mm; Beyond described flame-retardant layer, putting up wrapped mode is arranged on outside barrier layer; Described flame-retardant filler adopts fire-retardant gasket for packing to form, and its oxygen index is greater than 30%; Described stranding band attach most importance to lap wound bag the fire-retardant gluing glass fiber of two floor heights material form, oxygen index is greater than 55%; Described polyolefin oxygen barrier is extruded in outside stranding band, and oxygen index is greater than 42%; Described ceramic fireprotection layer is to be made up of overlapping wrapped ceramic fire guard, and thickness is 5.6 ~ 7.2mm; Described lock armo layer is to be made up of snake tubulose copper sheath, and thickness is 0.3 ~ 0.8mm; The oxygen index of described fire-retardant outer jacket is greater than 30%.
CN201320853407.XU 2013-12-23 2013-12-23 Flame-retardant composite fireproof cable Withdrawn - After Issue CN203644445U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103646712A (en) * 2013-12-23 2014-03-19 河南金水电缆集团有限公司 Flame-retardant composite fireproof cable
CN104616788A (en) * 2015-01-30 2015-05-13 云南正晓电缆有限公司 Fire refractory control cable
CN104681169A (en) * 2015-01-31 2015-06-03 安徽华泰电缆科技有限公司 Dual-layer shielding corrosion resistant insulation cable
CN105244093A (en) * 2015-10-30 2016-01-13 苏俊兰 Wear-resistant low-smoke environmental protection device
CN105244103A (en) * 2015-10-30 2016-01-13 苏俊兰 Environmental protection device
CN105244104A (en) * 2015-10-30 2016-01-13 苏俊兰 Corrosion-resistant environmental protection device
CN105244102A (en) * 2015-10-30 2016-01-13 苏俊兰 Fireproof environmental protection device
CN105244101A (en) * 2015-10-30 2016-01-13 苏俊兰 Fireproof low-smoke environmental protection device
CN105405520A (en) * 2015-10-30 2016-03-16 苏俊兰 Low-smoke environmental protection equipment
CN105989914A (en) * 2015-02-05 2016-10-05 上海朗达电缆(集团)有限公司 Environment-friendly type flexible fireproof cable
CN109346215A (en) * 2018-09-21 2019-02-15 何银亚 A kind of flexible wire structure of insulation fire-type
CN111415776A (en) * 2020-02-20 2020-07-14 江苏浦漕科技股份有限公司 Soft mineral insulation fireproof cable

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103646712A (en) * 2013-12-23 2014-03-19 河南金水电缆集团有限公司 Flame-retardant composite fireproof cable
CN103646712B (en) * 2013-12-23 2016-01-06 河南金水电缆集团有限公司 A kind of flame-retardant composite fireproof cable
CN104616788A (en) * 2015-01-30 2015-05-13 云南正晓电缆有限公司 Fire refractory control cable
CN104681169A (en) * 2015-01-31 2015-06-03 安徽华泰电缆科技有限公司 Dual-layer shielding corrosion resistant insulation cable
CN105989914B (en) * 2015-02-05 2018-10-30 上海朗达电缆(集团)有限公司 A kind of environment-friendly type flexible fire-proof cable
CN105989914A (en) * 2015-02-05 2016-10-05 上海朗达电缆(集团)有限公司 Environment-friendly type flexible fireproof cable
CN105244102A (en) * 2015-10-30 2016-01-13 苏俊兰 Fireproof environmental protection device
CN105244104A (en) * 2015-10-30 2016-01-13 苏俊兰 Corrosion-resistant environmental protection device
CN105244101A (en) * 2015-10-30 2016-01-13 苏俊兰 Fireproof low-smoke environmental protection device
CN105405520A (en) * 2015-10-30 2016-03-16 苏俊兰 Low-smoke environmental protection equipment
CN105244103A (en) * 2015-10-30 2016-01-13 苏俊兰 Environmental protection device
CN105244093A (en) * 2015-10-30 2016-01-13 苏俊兰 Wear-resistant low-smoke environmental protection device
CN109346215A (en) * 2018-09-21 2019-02-15 何银亚 A kind of flexible wire structure of insulation fire-type
CN111415776A (en) * 2020-02-20 2020-07-14 江苏浦漕科技股份有限公司 Soft mineral insulation fireproof cable

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C25 Abandonment of patent right or utility model to avoid double patenting
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Granted publication date: 20140611

Effective date of abandoning: 20160106