CN102682906A - Aluminum-core low-voltage fireproof power cable and manufacture method thereof - Google Patents

Aluminum-core low-voltage fireproof power cable and manufacture method thereof Download PDF

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Publication number
CN102682906A
CN102682906A CN2012101342882A CN201210134288A CN102682906A CN 102682906 A CN102682906 A CN 102682906A CN 2012101342882 A CN2012101342882 A CN 2012101342882A CN 201210134288 A CN201210134288 A CN 201210134288A CN 102682906 A CN102682906 A CN 102682906A
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China
Prior art keywords
layer
core
cable
aluminium
power cable
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Pending
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CN2012101342882A
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Chinese (zh)
Inventor
杨泽元
刘彦军
仲怀国
李茁实
王永
董春
张成龙
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Baosheng Science and Technology Innovation Co Ltd
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Baosheng Science and Technology Innovation Co Ltd
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Priority to CN2012101342882A priority Critical patent/CN102682906A/en
Publication of CN102682906A publication Critical patent/CN102682906A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an aluminum-core low-voltage fireproof power cable and a manufacture method thereof. The power cable comprises a cable core and a sheath, wherein a wrapping belt, a thermal insulation layer, a fire-blocking layer, a cooling layer and an armor layer are sequentially arranged outside the cable core, a non-woven fabric wrapping belt is wrapped outside the cable core, an inorganic fiber wrapping belt thermal insulation layer is wrapped outside the wrapping belt, the ceramic high-polymer composite fireproof silicon rubber fire-blocking layer is wrapped outside the thermal-insulation layer, the inorganic metal hydrate cooling layer is wrapped outside the fire-blocking layer in squeezing mode, the armor layer is arranged outside the cooling layer, and the halogen-free low-smoke inflaming retarding polyolefin sheath is wrapped outside the armor layer in squeezing mode. Inorganic fiber fillers are filled in gaps of the cable core, and an insulating wire core is formed by wrapping a crosslinked polyethylene insulating layer on an aluminum conductor in squeezing mode. The aluminum conductor is formed by pressing aluminum wires, the compressing degree of the aluminum wires is higher than 90%, and the roundness of the aluminum wires is higher than 98%. The inorganic metal hydrate cooling layer is made of oxygen blocking layer materials which use Al(OH)3 and Mg(OH)3 as the main body. The aluminum-core low-voltage fireproof power cable is good in fire resistance, flexible, high in inflaming retardant and environment friendly.

Description

A kind of aluminium core low pressure fireproof power cable and preparation method thereof
Technical field
The invention discloses structure of a kind of cable and preparation method thereof, be specifically related to a kind of aluminium core low pressure fireproof power cable and preparation method thereof, belong to the cables manufacturing technical field.
Background technology
In recent years along with the sharp increase of urban population, the continuous increase on skyscraper, large-scale hotel, supermarket, hospital, station, airport, the construction of subway, urban track traffic, construction of large common facility or the like; The importance of security against fire highlights, and the amount of laying of cable is doubled and redoubled in the building, lays not only consumptive material but also consume energy of too much cable in the small space; Therefore building begins to adopt fire-resisting cable to supply power; As fire-resisting cable, flame retardant coating is under flame temperature, and is not only fire-resistant; And to have higher thermal insulation not damage built-in electrical insulation to guarantee extraneous high temperature, guarantee the integrality of cable circuit in the back certain hour that catches fire.
Common fire-resisting cable mostly is the hard cable of bending property extreme difference, and bending radius is bigger, need 20 times of cable sizes usually at least, and cable weight is big, is unfavorable for that transportation and construction lay, and can only be used for major diameter, large space lays, difficult installation.
Summary of the invention
Technical problem to be solved by this invention provides a kind of aluminium core low pressure fireproof power cable and preparation method thereof, and fire resistance is good, softness, high flame retardant, environmental protection.
For solving the problems of the technologies described above; Aluminium core low pressure fireproof power cable of the present invention comprises cable core and sheath, and cable core sets gradually band, thermal insulation layer, retaining fire bed, cooling layer and armour outward; The outer wrapped nonwoven fabrics band of cable core; The outer wrapped inorfil band thermal insulation layer of band, thermal insulation layer are provided with potteryization macromolecule composite fire silicon rubber retaining fire bed outward, and the retaining fire bed extrudes inorganic metal hydrate cooling layer outward; The cooling layer is outer to be provided with the filament armour, and armour extrudes halogen-free and low-smoke flame-retardant polyolefin sheathed outward; The inorfil filler is filled in the gap of cable core, and insulated wire cores is to extrude crosslinked polyetylene insulated layer on the aluminium conductor to constitute.
Said inorganic metal hydrate cooling layer is with Al (OH) 3, Mg (OH) 2Oxygen barrier layer material for main body.
The preparation method of above-mentioned aluminium core low pressure fireproof power cable may further comprise the steps:
(1) aluminium wire is compacted into aluminium conductor, on aluminium conductor, extrudes crosslinked polyetylene insulated layer and constitute insulated wire cores; Insulated wire cores is twisted into cable core, and the inorfil filler is filled in the gap of cable core;
(2) wrapped band outside cable core; The outer wrapped inorfil band thermal insulation layer of band; Thermal insulation layer is provided with potteryization macromolecule composite fire silicon rubber retaining fire bed outward, and the retaining fire bed extrudes inorganic metal hydrate cooling layer outward, the outer filament armour that is provided with of cooling layer; Armour extrudes halogen-free and low-smoke flame-retardant polyolefin sheathed outward, obtains aluminium core low pressure fireproof power cable.
The degree of pressing of aluminium wire reaches more than 90% in the said aluminium conductor, and the roundness of aluminium conductor reaches more than 98%.
Compared with prior art, the present invention has following beneficial effect:
The first, cable adopts special three-in-one composite fire structure, is followed successively by thermal insulation layer, retaining fire bed, cooling layer from inside to outside, fully guarantees midium voltage cable fire resistance and fire-resistant back recoverability ability.Internal layer is the inorfil thermal insulation layer; When flame attacks cable; The high flame retardant inorfil is filled and band resolves into metal oxide and separates out the crystallization water, and metal oxide decomposes the back and forms network structure, and flue gas is had certain suction-operated; The crystallization water of separating out not only plays tangible settlement action to soot, but also has endothermic effect preferably.Can form carbonized structure in this external combustion process, this charring layer hinders supply and imflammable gas mobile of air, thus better protect insulating barrier.The soft type thermosetting elastomer of inferior outer employing independent research i.e. potteryization macromolecule composite fire silicon rubber; Under by the situation of flame ablation, organic substance can be ablated in the extremely short time, then in the course of reaction of very fast adding potteryization; Change into hard ceramic-like material; Form the good isolation layer of one deck, stop burning away of flame, play good flameproof effect; Under the normal operating position of cable, have good heat-conducting, not only can improve the service condition of cable, and can guarantee the normal use of cable; When cable was met the flame invasion and attack, flame retardant coating expanded rapidly and forms respond well heat shield, and the protection cable core does not receive the invasion and attack of outside burning things which may cause a fire disaster; At this moment, the flame retardant coating in the cable still has good heat-conducting, can the heat that conductor produces be transmitted to the non-fire zone that receives of cable, makes the increase that the temperature rise of conductor can be not too fast, guarantee cable normal use and fire-resistant after the recoverability ability.The oxygen barrier layer material that outermost layer adopts extrusion molding to be the main body with Al (OH) 3, Mg (OH) 2; The crystallization water molecule that this material at high temperature or burning back produce; With its adjacent layers cooling; When the outer flame temperature reaches 950 ℃ and when above, the primary insulation surface is lower than 200 ℃, guarantees that fully being transmitted to the internal layer temperature is suitably reduced; Can form cavernous shell and the metal oxide that resolves into is adsorbed on the flame retardant coating surface, this shell has certain suction-operated to flue gas, guarantees that simultaneously cable has the characteristic of high flame retardant and high current-carrying; Because its anti-flammability is very good, fully guarantee the high flame retardant characteristic of cable, improve the ampacity of cable.
The second, conductor adopts aluminium wire, and the degree of pressing of conductor reaches more than 90%; Roundness reaches more than 98%; Conductive surface is bright and clean, and no burr, cut guarantee that product has certain flexibility when having good electrical properties; Be convenient to install and lay, pair cross-section is reasonably controlled in design and manufacture process.
The 3rd, insulating material adopts has the good ultrapure clean crosslinked polyethylene insulation material of pliability, mechanical strength and electric property, when guaranteeing the cable electrical insulation property, and the tensile strength of reinforced insulation layer and anti-extrusion performance; Outer jacket adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material to extrude and forms, and makes cable have good flame retardant property and low smoke and zero halogen performance simultaneously.
Description of drawings
Fig. 1 is the structural representation of aluminium core low pressure fireproof power cable of the present invention;
Among the figure: 1 conductor, 2 insulating barriers, 3 fillers, 4 bands, 5 thermal insulation layers, 6 retaining fire beds, 7 cooling layers, 8 armours, 9 oversheaths.
Embodiment
Aluminium wire is compacted into aluminium conductor 1, and the degree of pressing of conductor reaches more than 90%, and roundness reaches more than 98%, and conductive surface is bright and clean, no burr, cut.Aluminium conductor extrudes crosslinked polyetylene insulated layer 2 outward and constitutes insulated wire cores.Insulated wire cores is twisted into cable core with cabler, fills inorfil filler 3 in the cable core of stranded stranding.The outer wrapped nonwoven fabrics band 4 of cable core; The outer wrapped inorfil band thermal insulation layer 5 of band; Thermal insulation layer is provided with potteryization macromolecule composite fire silicon rubber retaining fire bed 6 outward, and the retaining fire bed extrudes inorganic metal hydrate cooling layer 7 outward, the outer filament armour 8 that is provided with of cooling layer; It is halogen-free and low-smoke flame-retardant polyolefin sheathed 9 that armour extrudes outward, constitutes aluminium core low pressure fireproof power cable.Inorganic metal hydrate cooling layer is with Al (OH) 3, Mg (OH) 2Oxygen barrier layer material for main body.

Claims (4)

1. an aluminium core low pressure fireproof power cable comprises cable core and sheath, it is characterized in that; Cable core sets gradually band, thermal insulation layer, retaining fire bed, cooling layer and armour outward, the outer wrapped nonwoven fabrics band of cable core, the outer wrapped inorfil band thermal insulation layer of band; Thermal insulation layer is provided with potteryization macromolecule composite fire silicon rubber retaining fire bed outward; The retaining fire bed extrudes inorganic metal hydrate cooling layer outward, and the cooling layer is outer to be provided with the filament armour, and armour extrudes halogen-free and low-smoke flame-retardant polyolefin sheathed outward; The inorfil filler is filled in the gap of cable core, and insulated wire cores is to extrude crosslinked polyetylene insulated layer on the aluminium conductor to constitute.
2. aluminium core low pressure fireproof power cable according to claim 1 is characterized in that, said inorganic metal hydrate cooling layer is with Al (OH) 3, Mg (OH) 2Oxygen barrier layer material for main body.
3. a method for preparing aluminium core low pressure fireproof power cable as claimed in claim 1 is characterized in that, may further comprise the steps:
(1) aluminium wire is compacted into aluminium conductor, on aluminium conductor, extrudes crosslinked polyetylene insulated layer and constitute insulated wire cores; Insulated wire cores is twisted into cable core, and the inorfil filler is filled in the gap of cable core;
(2) wrapped band outside cable core; The outer wrapped inorfil band thermal insulation layer of band; Thermal insulation layer is provided with potteryization macromolecule composite fire silicon rubber retaining fire bed outward, and the retaining fire bed extrudes inorganic metal hydrate cooling layer outward, the outer filament armour that is provided with of cooling layer; Armour extrudes halogen-free and low-smoke flame-retardant polyolefin sheathed outward, obtains aluminium core low pressure fireproof power cable.
4. the method for preparing aluminium core low pressure fireproof power cable according to claim 3 is characterized in that the degree of pressing of aluminium wire reaches more than 90% in the said aluminium conductor, and the roundness of aluminium conductor reaches more than 98%.
CN2012101342882A 2012-05-03 2012-05-03 Aluminum-core low-voltage fireproof power cable and manufacture method thereof Pending CN102682906A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102881373A (en) * 2012-10-18 2013-01-16 江苏荣宜电缆有限公司 Fire-resisting cable
CN103325473A (en) * 2013-05-31 2013-09-25 远东电缆有限公司 Fire-proof low smoke zero halogen medium-pressure hoisting cable for high-rise building and production process thereof
CN105957609A (en) * 2016-06-16 2016-09-21 安徽太平洋电缆股份有限公司 Medium-voltage hoisting fire-resistant cable and preparation method thereof
CN106057344A (en) * 2016-07-28 2016-10-26 江苏长峰电缆有限公司 Impact-resistant spray-resistant, halogen-free, low-smoke flame-retardant medium voltage fire-resistant cable
CN108010620A (en) * 2016-10-30 2018-05-08 镇江亚昆机械有限公司 A kind of aluminium core cloth cable
CN113963853A (en) * 2021-10-21 2022-01-21 绍兴电力设备有限公司 Flame-retardant, fire-resistant, waterproof and impact-resistant medium-voltage power cable and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200979814Y (en) * 2006-11-30 2007-11-21 无锡市沪安电线电缆有限公司 A middle-high voltage 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
CN102360612A (en) * 2011-10-08 2012-02-22 江苏亨通电力电缆有限公司 Fireproof silicone rubber insulation fireproof power cable with rated voltage of 1kv and below
CN202632856U (en) * 2012-05-03 2012-12-26 宝胜科技创新股份有限公司 Low-voltage aluminum-core fireproof power cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200979814Y (en) * 2006-11-30 2007-11-21 无锡市沪安电线电缆有限公司 A middle-high voltage 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
CN102360612A (en) * 2011-10-08 2012-02-22 江苏亨通电力电缆有限公司 Fireproof silicone rubber insulation fireproof power cable with rated voltage of 1kv and below
CN202632856U (en) * 2012-05-03 2012-12-26 宝胜科技创新股份有限公司 Low-voltage aluminum-core fireproof power cable

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102881373A (en) * 2012-10-18 2013-01-16 江苏荣宜电缆有限公司 Fire-resisting cable
CN103325473A (en) * 2013-05-31 2013-09-25 远东电缆有限公司 Fire-proof low smoke zero halogen medium-pressure hoisting cable for high-rise building and production process thereof
CN103325473B (en) * 2013-05-31 2017-09-26 远东电缆有限公司 Skyscraper fire resisting low-smoke halogen-free medium voltage crane cable and its production technology
CN105957609A (en) * 2016-06-16 2016-09-21 安徽太平洋电缆股份有限公司 Medium-voltage hoisting fire-resistant cable and preparation method thereof
CN105957609B (en) * 2016-06-16 2017-10-10 安徽太平洋电缆股份有限公司 Middle pressure lifting fire-resisting cable and preparation method thereof
CN106057344A (en) * 2016-07-28 2016-10-26 江苏长峰电缆有限公司 Impact-resistant spray-resistant, halogen-free, low-smoke flame-retardant medium voltage fire-resistant cable
CN108010620A (en) * 2016-10-30 2018-05-08 镇江亚昆机械有限公司 A kind of aluminium core cloth cable
CN113963853A (en) * 2021-10-21 2022-01-21 绍兴电力设备有限公司 Flame-retardant, fire-resistant, waterproof and impact-resistant medium-voltage power cable and preparation method thereof

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CB03 Change of inventor or designer information

Inventor after: Yang Zeyuan

Inventor after: Zhang Huarong

Inventor after: Zou Hongfei

Inventor after: Liu Yanjun

Inventor after: Zhong Huaiguo

Inventor after: Li Zhuoshi

Inventor after: Wang Yong

Inventor after: Dong Chun

Inventor after: Zhang Chenglong

Inventor after: Hu Yuan

Inventor after: Xu Yunhai

Inventor before: Yang Zeyuan

Inventor before: Liu Yanjun

Inventor before: Zhong Huaiguo

Inventor before: Li Zhuoshi

Inventor before: Wang Yong

Inventor before: Dong Chun

Inventor before: Zhang Chenglong

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: YANG ZEYUAN LIU YANJUN ZHONG HUAIGUO LI ZHUOSHI WANG YONG DONG CHUN ZHANG CHENGLONG TO: YANG ZEYUAN LIU YANJUN ZHONG HUAIGUO LI ZHUOSHI WANG YONG DONG CHUN ZHANG CHENGLONG HU YUAN XU YUNHAI ZHANG HUARONG ZOU HONGFEI

C02 Deemed withdrawal of patent application after publication (patent law 2001)
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Application publication date: 20120919