CN103021539B - Middle companding holds A level flame resistant cable - Google Patents
Middle companding holds A level flame resistant cable Download PDFInfo
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- CN103021539B CN103021539B CN201110282759.XA CN201110282759A CN103021539B CN 103021539 B CN103021539 B CN 103021539B CN 201110282759 A CN201110282759 A CN 201110282759A CN 103021539 B CN103021539 B CN 103021539B
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Abstract
To the present invention relates in one companding and hold A level flame resistant cable, structure comprises cable core, the isolation strip that blocks water, inorganic compounding filler, glass fiber band, sheath, armour and oversheath.Described core is stranded conductor, conductor screen, insulation, insulation shielding and metallic shield; The wrapped isolation strip that blocks water of metallic shield, fills the inorganic mineral composite powder adopting special formulation, then wrapped alkali-free glass wool band; One deck sheath, galvanized steel strip and ceramic sheath material is extruded outside band.Advantage of the present invention to meet fire-retardant A level and fire resistant requirements, in flame temperature 800 DEG C of situations, keeps insulating inner temperature below 160 DEG C, ensure that circuit normally runs, and owing to changing packing material, cable transmission ability is improved.Have fire-retardant, fire-resistant, expand transmission capacity, production technology easy, be easy to construction, be applicable to being used in the place that power station, oil field, skyscraper, subway, airport, chemical industry etc. require flame-retardant strict.
Description
Technical field
The present invention relates to a kind of middle companding and hold the structure of A level flame resistant cable and the formula of inorganic fill and porcelain sheath material, belong to field of cable technology.
Background technology
In recent years, the heaviness loss of domestic each big bus public place of entertainment, chemical industry, colliery, mall, people's life that fire of high-rise building causes and property, people have had more deep understanding to fire-fighting, fire safety; Along with the sharp increase of urban population; skyscraper, hotel, large supermarket, hospital, station, airport constantly increase; the construction of subway, tunnel traffic; and large-scale place of public amusement, public transit facility increase; the importance of fire-fighting fire-proof safety shows especially out; how when there is abnormal fire; within a certain period of time ensure electric power with communicate unimpeded; ask when winning valuable to greatest extent; the injures and deaths of minimizing personnel and the loss of lives and properties, this is that people are constantly exploring always.In the past, the design of pressure flame-retardant fire-resistant power cable was filled mainly with glass fibre or mineral wool rope and extruded thick oxygen barrier layer, insulate in combustion process and also can cause cable breakdown because of overheated, generation electrification, do not reach lasting fire resistant requirements, and a large amount of dense smoke and harmful substance can be produced in combustion, cause secondary pollution to surrounding environment.Use the glass fibre of high thermal resistance or rock wool to fill the diffusion affecting cable conductor heat simultaneously, make cable temperature too high, the transmittability that impact is overall.
Summary of the invention
The task of patent of the present invention solves cable to insulate under flame conditions and can keep normal electrical property, guarantee electric line normally works, fire-retardantly reach the above requirement of A level, without noxious substance and dense smoke during burning, and in normal use procedure, improve transmission capacity, reduce energy loss, carry the useful life of high pressure fire-resisting cable.Thus raising Electrical Safety, reduce the features such as use cost.
The present invention designs companding in one and holds A level flame resistant cable, comprise cable core, oversheath, it is characterized in that: described cable core is stranded conductor, the outer wrapped isolation strip that blocks water of conductor shield, insulating barrier, insulation screen, metal screen layer and metal screen layer is enclosed with outward according to this at cable core, between cable core and oversheath, be filled with inorganic mineral composite powder, oversheath is from the inside to the outside according to this for extruding one deck sheath, galvanized steel strip and ceramic sheath material outside alkali-free glass wool band, alkali-free glass wool band.It is characterized in that: described inorganic mineral composite powder is the mixture of inorganic mineral and inorganic combustion inhibitor.Inorganic mineral composite powder is made up of following composition and percentage by weight: inorganic mineral calcium oxide 62.5%, inorganic combustion inhibitor is 37.5%, hydrotalcite 4.5%, aluminium hydroxide 25%, magnesium hydroxide 8% in inorganic combustion inhibitor, the particle size diameter of all constituents is 1 ~ 100nm.It is characterized in that: described ceramic protective cover material is made up of following composition and weight portion: ethylene-ethyl acrylate copolymer 30 ~ 40 parts, ethylene-ethyl acetate copolymer 30 ~ 40 parts, polyethylene 20 ~ 40 parts, become porcelain filling 55 ~ 85 parts, coupling agent 0.5 ~ 2.5 part, fire retardant A90 ~ 100 part, fire retardant B15 ~ 20 part, lubricant 1 ~ 2 part, 1 ~ 3 part, antioxidant.
The present invention is rational in infrastructure, manufactures than being easier to, and fire-retardant and fire resistance rating improves greatly, and cable transmission capacity, serviceability and life-span all get a promotion.When controlling fire-resisting cable cost, use inorganic compounding packing material, hydrotalcite wherein, aluminium hydroxide, magnesium hydroxide associating fire retardant can decomposite a large amount of water when burning, and produce metal oxide to be wrapped in closely on core, play oxygen barrier, heat insulation, cooling effect, ensure that insulation is normal and use.The thermal resistance of inorganic oxide calcium powder is very little, be filled in uniformly between core, make the diffusion of heat stable equilibrium, reduction except conductor wire core temperature decreases line loss and plays except energy-conservation effect, also extend the useful life of cable insulation and sheath, because the aging life-span of organic material and its working temperature height have a direct impact.
Accompanying drawing explanation
Accompanying drawing is construction of cable drawing in side sectional elevation of the present invention.
Embodiment
Below by accompanying drawing, patent of the present invention is introduced.
Figure comprises cable core, oversheath, it is characterized in that: described cable core is that multiply presses stranded copper conductor, the outer wrapped isolation strip that blocks water of conductor shield, insulating barrier, insulation screen, metal screen layer and metal screen layer is enclosed with outward according to this at cable core, inorganic mineral composite powder is filled with, one deck sheath, galvanized steel strip and the ceramic sheath material of oversheath from the inside to the outside according to this for extruding outside alkali-free glass wool band, alkali-free glass wool band between cable core and oversheath.It is characterized in that: described inorganic mineral composite powder is the mixture of inorganic mineral and inorganic combustion inhibitor.Inorganic mineral composite powder is made up of following composition and percentage by weight: inorganic mineral calcium oxide 62.5%, inorganic combustion inhibitor is 37.5%, hydrotalcite 4.5%, aluminium hydroxide 25%, magnesium hydroxide 8% in inorganic combustion inhibitor, the particle size diameter of all constituents is 1 ~ 100nm.It is characterized in that: described ceramic protective cover material is made up of following composition and weight portion: ethylene-ethyl acrylate copolymer 30 ~ 40 parts, ethylene-ethyl acetate copolymer 30 ~ 40 parts, polyethylene 20 ~ 40 parts, become porcelain filling 55 ~ 85 parts, coupling agent 0.5 ~ 2.5 part, fire retardant A90 ~ 100 part, fire retardant B15 ~ 20 part, lubricant 1 ~ 2 part, 1 ~ 3 part, antioxidant.
Described cable core is that multiply presses twisted copper conductors (1), three-layer co-extruded semiconductive polyolefin conductor shield (2), the insulating barrier (3) of crosslinked polyethylene, semiconductive polyolefin insulation shielding (4), insulation shielding (4) outward wrapped one deck rate of putting up be greater than the copper strips of 15% as metal screen layer (5), the outer wrapped isolation strip that blocks water (6) of metal screen layer, and ensure that waterstop is closely wrapped and put up about 50%, fill inorganic mineral composite powder (7), and tight wrapped 2 layers of alkali-free glass wool band (8), the material (9) of one deck height oxygen index polyolefin sheath is extruded outside band, wrapped 2 layers of galvanized steel strip (10) between protecting outside sheath, two-layer clearance control is less than 50% of width of steel band, finally extrude last layer ceramic sheath material (11), before extruding, ceramic sheath material is stirred.Ceramic protective cover material can more than 750 DEG C rapid porcelain, sinter duricrust into, and constitute jointly protective layer with steel band, isolated flame, guarantees that cable is complete in case of fire.
Claims (1)
1. companding holds A level flame resistant cable in one kind, comprise cable core, oversheath, it is characterized in that: described cable core is stranded conductor, the outer wrapped isolation strip that blocks water of conductor shield, insulating barrier, insulation screen, metal screen layer and metal screen layer is enclosed with outward successively at cable core, between cable core and oversheath, be filled with inorganic mineral composite powder, oversheath is followed successively by one deck sheath, galvanized steel strip and the ceramic sheath material that extrude outside alkali-free glass wool band, alkali-free glass wool band from the inside to the outside; Described inorganic mineral composite powder is the mixture of inorganic mineral and inorganic combustion inhibitor; Inorganic mineral composite powder is made up of following composition and percentage by weight: inorganic mineral calcium oxide 62.5%, inorganic combustion inhibitor is 37.5%, hydrotalcite 4.5%, aluminium hydroxide 25%, magnesium hydroxide 8% in inorganic combustion inhibitor, the particle size diameter of all constituents is 1 ~ 100nm; Described ceramic sheath material is made up of following composition and weight portion: ethylene-ethyl acrylate copolymer 30 ~ 40 parts, ethylene-ethyl acetate copolymer 30 ~ 40 parts, polyethylene 20 ~ 40 parts, become porcelain filling 55 ~ 85 parts, coupling agent 0.5 ~ 2.5 part, fire retardant A90 ~ 100 part, fire retardant B15 ~ 20 part, lubricant 1 ~ 2 part, 1 ~ 3 part, antioxidant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110282759.XA CN103021539B (en) | 2011-09-22 | 2011-09-22 | Middle companding holds A level flame resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110282759.XA CN103021539B (en) | 2011-09-22 | 2011-09-22 | Middle companding holds A level flame resistant cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103021539A CN103021539A (en) | 2013-04-03 |
| CN103021539B true CN103021539B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110282759.XA Expired - Fee Related CN103021539B (en) | 2011-09-22 | 2011-09-22 | Middle companding holds A level flame resistant cable |
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| Country | Link |
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| CN (1) | CN103021539B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985457A (en) * | 2014-04-24 | 2014-08-13 | 安徽徽宁电器仪表集团有限公司 | Shield cable |
| CN105023641A (en) * | 2015-06-16 | 2015-11-04 | 安徽天元电缆有限公司 | Light flame-retardant plate shielding flame-retardant composite layer, filling layer and manufacturing method thereof |
| CN105655038B (en) * | 2016-04-08 | 2017-06-16 | 长城电缆有限公司 | A kind of fireproof cable and its production technology |
| CN107424667B (en) * | 2017-07-27 | 2024-01-23 | 应急管理部四川消防研究所 | Halogen-free flame-retardant fire-resistant cable and preparation method thereof |
| CN110993174A (en) * | 2019-12-18 | 2020-04-10 | 山东中电通电缆科技有限公司 | Aluminum alloy core composite shielding flame-retardant fire-resistant cable for frequency converter |
| CN111192716B (en) * | 2020-01-06 | 2021-09-14 | 浙江中大元通特种电缆有限公司 | Flame-retardant cable for underground coal mine |
| CN111599518A (en) * | 2020-06-02 | 2020-08-28 | 超达电线电缆有限公司 | Novel high-precision intelligent instrument signal cable and manufacturing process thereof |
Citations (6)
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| CN1625786A (en) * | 2002-04-29 | 2005-06-08 | 皮雷利&C.有限公司 | Fire resistant cable |
| CN1969007A (en) * | 2004-06-15 | 2007-05-23 | Lg电线有限公司 | Resin composition resistant to thermal deformation and cut-through and the insulation material and the cable using the same |
| CN101169993A (en) * | 2007-11-21 | 2008-04-30 | 远东电缆有限公司 | Medium-voltage fire-proof cable |
| CN201134299Y (en) * | 2007-12-21 | 2008-10-15 | 安徽华菱电缆集团有限公司 | Ceramic silicon rubber insulating flame-resistant cable |
| CN101404189A (en) * | 2008-11-25 | 2009-04-08 | 南京工业大学 | Rapid ceramic fire-resistant cable material and preparation method thereof |
| CN101447252A (en) * | 2008-12-26 | 2009-06-03 | 宝胜科技创新股份有限公司 | Novel flame resistant cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO921286D0 (en) * | 1992-04-02 | 1992-04-02 | Norsk Kabel Abb | CABLE DEVICE, SPECIAL FIRE-RESISTANT CABLE |
-
2011
- 2011-09-22 CN CN201110282759.XA patent/CN103021539B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1625786A (en) * | 2002-04-29 | 2005-06-08 | 皮雷利&C.有限公司 | Fire resistant cable |
| CN1969007A (en) * | 2004-06-15 | 2007-05-23 | Lg电线有限公司 | Resin composition resistant to thermal deformation and cut-through and the insulation material and the cable using the same |
| CN101169993A (en) * | 2007-11-21 | 2008-04-30 | 远东电缆有限公司 | Medium-voltage fire-proof cable |
| CN201134299Y (en) * | 2007-12-21 | 2008-10-15 | 安徽华菱电缆集团有限公司 | Ceramic silicon rubber insulating flame-resistant cable |
| CN101404189A (en) * | 2008-11-25 | 2009-04-08 | 南京工业大学 | Rapid ceramic fire-resistant cable material and preparation method thereof |
| CN101447252A (en) * | 2008-12-26 | 2009-06-03 | 宝胜科技创新股份有限公司 | Novel flame resistant cable |
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| CN103021539A (en) | 2013-04-03 |
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Granted publication date: 20151007 Termination date: 20190922 |