CN106297994A - A kind of insulating protective metal shell of mineral fire-resisting cable and manufacture method thereof and application - Google Patents

A kind of insulating protective metal shell of mineral fire-resisting cable and manufacture method thereof and application Download PDF

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CN106297994A
CN106297994A CN201510253757.6A CN201510253757A CN106297994A CN 106297994 A CN106297994 A CN 106297994A CN 201510253757 A CN201510253757 A CN 201510253757A CN 106297994 A CN106297994 A CN 106297994A
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layer
mineral
fire
flame
thickness
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张国宾
张志清
刘磊
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Shanghai Gaoqiao Cable Factory Co Ltd
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Shanghai Gaoqiao Cable Factory Co Ltd
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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

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Abstract

The invention discloses a kind of insulating protective metal shell of mineral fire-resisting cable and manufacture method thereof and application.This cable includes being located at some insulated wire cores of inside and being coated on the aluminum metal sheath outside core and be coated on the anti-rot plastic layer of aluminum metal sheath outer layer, mineral oxygen barrier layer, the first flame-retardant layer, the fire-resistant expanding layer of mineral, metal shielding, the second flame-retardant layer and low-smoke non-halogen flame-retardant oversheath successively;Insulated wire cores is the metallic conductor that external sheath has mineral insulation layer.The method includes: first by mineral insulation material around wrapping in prepared insulated wire cores outside metallic conductor, then cable core it is twisted into, afterwards aluminum metal is extruded in outside cable core continuously, extrude anti-rot plastic and mineral oxygen barrier material the most successively, wrapped fire proofing, extrudes mineral refractory swelling material, braided metal silk, wrapped fire proofing, extrudes halogen-free low-smoke flame retardant material.The cable speed of production of the present invention is fast, cable length length, have the waterproof and fire resistant flame retardant anticollision of excellence.

Description

A kind of insulating protective metal shell of mineral fire-resisting cable and manufacture method thereof and application
Technical field
The present invention relates to a kind of cable, particularly relate to a kind of insulating protective metal shell of mineral fire-resisting cable and Manufacture method and application.
Background technology
What common fire-resisting cable typically insulated use is all high-molecular organic material, therefore at flame condition Under easily carbonization and lose insulating effect, it is unable to reach under 950 DEG C of flames fire-resistant 3 on refractory ability Hour requirement, and without functions such as waterproof, anticollisioves, be difficult to meet the demand in market.Mineral are exhausted Edge cable main material uses inorganic mineral or mineral compound, and these materials the most all have higher melt, It is not easy to burn or combustion-supporting under flame condition, becomes the focus studied in the last few years.
In existing market, application disclosure satisfy that what BS6387 standard C.W.Z level fire resistance test only has With the BTT class rigidity mineral insulated cable of magnesium oxide insulated copper pipe sheath, but such mineral insulation electricity Cable is opaque due to magnesium oxide insulated material and copper pipe sheath cannot directly extrude, and causing it to produce can only Following more than 100 year front repeatedly drawing and dial moulding process, this technique speed of production is slow, engineering length is short, connect Head is many, manufacturing environment severe (dust), field installation process are complicated.Although flexible mineral insulation cable Can preferably overcome drawbacks described above, but generally use due to it copper strips to indulge bag welding procedure, commissure is easy Solder skip, easy to fall off, water resistance is poor, bends, weld seam easily ftractures when burning, and there is use safety the most hidden Suffer from.And aluminum metal is owing to extruding continuously, become the current preferable protective metal shell of flexible mineral insulation cable Material.Chinese patent CN2745194A discloses one, and to extrude mineral insulation protective metal shell continuously fire-resistant Cable, its use metallic aluminium as sheath, although this cable the most also can be by the inspection of BS6387 Survey, but due to the unicity on this Cable Construction Design, without stable anti-collision structure, fire resistance It not highly stable, and aluminum metal set can only extrude relatively thin thickness continuously because technique limits, and causes The substandard requirement of body D.C. resistance, it is impossible to use as ground connection core (PE line or protective earthing-neutral conductor), And it is unable to reach the fire-resistant bump test of 2 hours of BS8491 regulation, i.e. cannot meet fire-resistant and clash into After carrying out two hours, 5 minutes cables of Water spray do not puncture again simultaneously.
Summary of the invention
Technical problem solved by the invention is precisely in order to overcome existing BTT class rigidity mineral insulation resistance to Thermoelectricity cable speed of production is slow, engineering length is short, joint is many, manufacturing environment is severe, field installation process is multiple Miscellaneous defect and existing flexible mineral insulation cable fire unstable properties, BS8491 cannot be met The defect of the fire-resistant bump test of 2 hours of standard regulation, it is provided that a kind of insulating protective metal shell of mineral is fire-resistant Cable and manufacture method thereof and application.The insulating protective metal shell of mineral fire-resisting cable of the present invention is that all-round connects Continuing and extrude insulating protective metal shell of mineral fire-resisting cable, this fire-resisting cable can reach BS6387 regulation C.W.Z rank, moreover it is possible to meet the fire-resistant bump test of 2 hours that BS8491 standard specifies, the most fire-resistant After carrying out two hours with shock, 5 minutes cables of Water spray do not puncture again simultaneously, and speed of production is fast, can With long length and whole continuous production, owing to the metal tube of continuous seamless technology exists so that this flame proof electrical Cable has the water resistance of excellence.
The present invention solves above-mentioned technical problem by following technical proposals.
The invention provides a kind of insulating protective metal shell of mineral fire-resisting cable, including being located at described mineral insulation Some insulated wire cores within protective metal shell fire-resisting cable, an aluminum metal sheath, an anti-rot plastic layer, One mineral oxygen barrier layer, one first flame-retardant layer, a fire-resistant expanding layer of mineral, a metal shielding, one Second flame-retardant layer and the low-smoke non-halogen flame-retardant being located at described insulating protective metal shell of mineral fire-resisting cable outer layer Oversheath;Described insulated wire cores is the metallic conductor that external sheath has a mineral insulation layer;Described aluminium gold Belonging to sheath and be coated on the outside of described some insulated wire cores, the outer layer of described aluminum metal sheath is coated with successively Described anti-rot plastic layer, described mineral oxygen barrier layer, described first flame-retardant layer, described mineral are fire-resistant swollen Swollen layer, described metal shielding, described second flame-retardant layer and described low-smoke non-halogen flame-retardant oversheath.
Wherein, the radical of described insulated wire cores is preferably 1~5, is more preferably 1~4.
Wherein, the material of described mineral insulation layer can use material commonly used in the art, preferably For fireproof mica.The thickness of described mineral insulation layer is preferably 0.4~1.8mm.
Wherein, the material of described metallic conductor can use material commonly used in the art, preferably copper. The sectional area of described metallic conductor is preferably 1.5~630mm2
Wherein, described aluminum metal sheath typically uses and extrudes jointless technique continuously and be coated on described some eradications The outside of edge core, described extrude jointless technique continuously this area routine operation can be used to carry out, described Aluminum metal sheath has the waterproof and moistureproof performance of excellence.The thickness of described aluminum metal sheath is preferably 1.2~1.8mm, it is more preferably 1.2~1.5mm.
Wherein, the thickness of described anti-rot plastic layer is preferably 1.0mm.Described anti-rot plastic layer is preferably For profile of tooth anti-rot plastic layer, the tooth height of described profile of tooth is preferably 0.6mm.Described anti-rot plastic layer Material can use material commonly used in the art, preferably polyethylene and/or crosslinked polyethylene.
Wherein, the material of described mineral oxygen barrier layer is preferably made up of perlite, magnesium hydroxide and graphite. Described mineral oxygen barrier layer has the fire protecting performance of excellence, and heat can decompose water outlet.Described mineral oxygen barrier The thickness of layer is preferably 1.0~2.0mm.
Wherein, the material of described first flame-retardant layer can use material commonly used in the art, preferably Halogen-free low-smoke flame retardant material.The thickness of described first flame-retardant layer is preferably 1.2~1.8mm.
Wherein, the material of the fire-resistant expanding layer of described mineral is preferably by waterglass, perlite, hydroxide Magnesium, aluminium hydroxide and graphite composition.The material of the fire-resistant expanding layer of described mineral have higher viscosity and Fastness so that the fire-resistant expanding layer of mineral heat can expand and form duricrust, to prevent the invasion and attack of flame. The thickness of the fire-resistant expanding layer of described mineral is preferably 2.0~3.0mm.
Wherein, described metal shielding is preferably formed by metal wire knitted, and described diameter wiry is relatively It is 0.6~1.0mm goodly.Described metal shielding is more preferably formed by stainless steel silk and/or proof copper-wire braided. Described metal shielding coordinates the fire-resistant expanding layer of described mineral to constitute a stable anti-collision structure.Institute The thickness stating metal shielding is preferably 1.2~2.0mm.
Wherein, the material of described second flame-retardant layer can use material commonly used in the art, preferably Fire resistant ceramic silicone rubber.Described second flame-retardant layer can ensure described metal shielding and described when fire-resistant The anti-collision structure that the fire-resistant expanding layer of mineral is constituted is indeformable.The thickness of described second flame-retardant layer is preferably It is 1.2~1.8mm.
Wherein, the material of described low-smoke non-halogen flame-retardant oversheath can use material commonly used in the art, It is preferably polyolefin or the elastomeric material of low-smoke non-halogen flame-retardant.Described low-smoke non-halogen flame-retardant oversheath Thickness is preferably 1.8~3.8mm, is more preferably 1.8~3.3mm.
Present invention also offers the manufacture method of above-mentioned insulating protective metal shell of mineral fire-resisting cable, it include as Lower step:
(1) by mineral insulation material around wrapping in outside metallic conductor, a mineral insulation layer is formed, Prepare an insulated wire cores;
(2) some described insulated wire cores are twisted into cable core, then aluminum metal is extruded in continuously institute State outside cable core, form an aluminum metal sheath;
(3) anti-rot plastic is extruded in outside described aluminum metal sheath, forms an anti-rot plastic layer;
(4) mineral oxygen barrier material is extruded in outside described anti-rot plastic layer, formed a mineral every Oxygen layer;
(5) by fire proofing around wrapping in outside described mineral oxygen barrier layer, one first flame-retardant layer is formed;
(6) mineral refractory swelling material is extruded in outside described first flame-retardant layer, forms mineral The fire-resistant expanding layer of matter;
(7) weave with tinsel outside the fire-resistant expanding layer of described mineral, form a metal and add Strong layer;
(8) by fire proofing around wrapping in outside described metal shielding, one second flame-retardant layer is formed;
(9) halogen-free low-smoke flame retardant material is extruded in outside described second flame-retardant layer, formed a low cigarette without The fire-retardant oversheath of halogen.
In step (1), described metallic conductor is preferably formed, more preferably by copper by conductor monofilament is stranded Monofilament is stranded to be formed.The sectional area of described metallic conductor is preferably 1.5~630mm2.Art technology The diameter of conductor monofilament and radical can be selected by personnel according to the sectional area of metallic conductor of the present invention.
In step (1), described mineral insulation material is preferably fireproof mica.Described wrapped thickness Degree preferably 0.4~1.8mm, those skilled in the art are according to step (1) mineral insulant Wrapped thickness the wrapped number of plies can be selected.
In step (2), described cable core is preferably formed, more preferably by 1~5 described insulated wire cores is stranded Ground is formed by 1~4 described insulated wire cores is stranded.Described cable core should require surfacing, no concave-convex or torsion Bent.
In step (2), described aluminum metal is extruded continuously before, described aluminum metal is preferably through pre-place Reason, described pretreatment is carried out preferably according to following step: first brush away the dust on aluminum metal surface with hairbrush Foul, cleans the greasy dirt removing aluminum metal surface the most again, makes aluminum metal surface cleaning clean;Described use Hairbrush brushes away the dust foul on aluminum metal surface and brush unit can be used to carry out, and described cleaning removes aluminum metal The greasy dirt on surface can use on-line cleaning system to carry out.
In step (2), described in extrude the extruder that this area can be used conventional and carry out, described extruder Die holder on be generally equipped with the circumference that feeding guide-plate and cavity, feeding guide-plate and cavity take turns with extruding and match And forming extrusion chamber with the material blocking block on cavity, pressing material is compacted through compact wheel, under the effect of frictional force It is continuously fed into extrusion chamber, blank circumferentially retard motion before material blocking block, enter cavity, pass through cavity Interior extrusion die extrusion aluminum metal sheath.Described cavity preferably through preheating, described in preheat relatively It is to place in the baking oven of 550~650 DEG C 4~5 hours goodly, more preferably places in the baking oven of 600 DEG C 4~5 hours.
In step (2), described in the temperature that extrudes be preferably 480~530 DEG C, be more preferably 500 DEG C. The described thickness extruded is preferably 1.2~1.8mm, is more preferably 1.2~1.5mm.Described aluminum metal is protected The conductor DC resistance of set should be greater than the requirement of corresponding copper ground connection core, using meet aluminum metal sheath as The requirement of ground connection core (PE line or protective earthing-neutral conductor).
In step (3), described anti-rot plastic is preferably polyethylene and/or crosslinked polyethylene.
In step (3), described in extrude and preferably use 90 type extruders to carry out, described in the temperature that extrudes Preferably experience seven temperature provinces, respectively 170~175 DEG C, 175~180 DEG C, 180~185 DEG C, 185~190 DEG C, 190~195 DEG C, 190~195 DEG C and 195~200 DEG C.The described thickness extruded is preferably For 1.0mm.
In step (3), described anti-rot plastic layer is preferably profile of tooth anti-rot plastic layer, described profile of tooth Tooth height is preferably 0.6mm.
In step (4), described mineral oxygen barrier material is preferably by perlite, magnesium hydroxide and graphite Composition.
In step (4), described in extrude preferably employing cold-extruded mode, described cold-extruded can use this area Conventional extruder is carried out, and described extruder typically has special head and wolfram steel mould, without the thermal treatment zone. The described thickness extruded is preferably 1.0~2.0mm.
In step (5), described fire proofing is preferably halogen-free low-smoke flame retardant material.Described wrapped Thickness is preferably 1.2~1.8mm, those skilled in the art according in step (5) fire proofing around The wrapped number of plies can be selected by bag thickness.
In step (6), described mineral refractory swelling material is preferably by waterglass, perlite, hydrogen Magnesium oxide, aluminium hydroxide and graphite composition.
In step (6), described in extrude preferably employing cold-extruded mode, described cold-extruded can use this area Conventional extruder is carried out, and described extruder typically has special head and wolfram steel mould, without the thermal treatment zone. The described thickness extruded is preferably 2.0~3.0mm.
In step (7), described diameter wiry is preferably 0.6~1.0mm.Described tinsel is relatively Goodly for stainless steel silk and/or copper wire.The thickness of described braiding is preferably 1.2~2.0mm.Described metal Enhancement Layer coordinates the fire-resistant expanding layer of described mineral to constitute a stable anti-collision structure.
In step (8), described fire proofing is preferably fire resistant ceramic silicone rubber.Described wrapped thickness Degree preferably 1.2~1.8mm, those skilled in the art are according to fire proofing wrapped in step (8) The wrapped number of plies can be selected by thickness.Described second flame-retardant layer can ensure described metal when fire-resistant The anti-collision structure that enhancement Layer and the fire-resistant expanding layer of described mineral are constituted is indeformable.
In step (9), described halogen-free low-smoke flame retardant material is preferably the polyolefin of low-smoke non-halogen flame-retardant Or elastomeric material.
In step (9), described in extrude and preferably use 120 type extruders to carry out, described in the temperature that extrudes Degree preferably experience eight temperature provinces, respectively 90~95 DEG C, 90~95 DEG C, 95~100 DEG C, 100~110 DEG C, 115~120 DEG C, 120~125 DEG C, 125~130 DEG C and 130~135 DEG C.The described thickness extruded is preferably It is 1.8~3.8mm, is more preferably 1.8~3.3mm.
Present invention also offers above-mentioned insulating protective metal shell of mineral fire-resisting cable to need to protect under Fire Conditions Hold distribution that circuit integrity can require, illuminate, control and application in warning system.
On the basis of meeting common sense in the field, above-mentioned each optimum condition, can combination in any, i.e. get Ben Fa Bright each preferred embodiments.
Agents useful for same of the present invention and raw material are the most commercially.
The most progressive effect of the present invention is:
(1) the aluminum metal sheath selected in the insulating protective metal shell of mineral fire-resisting cable of the present invention can be continuous Extruding formation, therefore cable length length and whole are continuously;Overlap due to the aluminum metal of seamless extrusion and exist, electricity Cable has the water resistance of excellence, and has rat-and-ant proof, anti-scattered strays stream, the jamproof effect of resistance to compression. Meanwhile, this aluminum metal sheath also serves as the most again PE line or protective earthing-neutral conductor, thus reduces same specification The diameter of cable, and the life safety in electricity consumption can be improved, it is to avoid the generation of electric shock accidents.
(2) the insulating protective metal shell of mineral fire-resisting cable of the present invention is arranged especially at aluminum metal sheath outer layer One mineral oxygen barrier layer and the fire-resistant expanding layer of a mineral;This mineral oxygen barrier layer has hot-cast socket function, Magnesium hydroxide heat can decomposite thermal resistance little (thickness is thin) before magnesium oxide and water, i.e. ignition of cable, in order to Heat radiation;The fire-resistant expanding layer of this mineral have employed tinsel while extrusion and weaves, and mineral is resistance to Fire expanding layer and tinsel constitute enhancement Layer, have and can form duricrust after heated, generate many spaces, height The thermal resistance material of foaming, and then strengthen the high-temperature resistance of built-in aluminum metal sheath, can fully meet The C.W.Z rank of BS6387 standard, and 2 hours can specified by BS8491 standard is resistance to Fire adds bump test, and the spray test of 5min.
(3) the insulating protective metal shell of mineral fire-resisting cable of the present invention can be applicable to need under Fire Conditions to protect Hold distribution that circuit integrity can require, illuminate, control and warning system.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of insulating protective metal shell of mineral fire-resisting cable of the present invention, wherein, 1 For insulated wire cores, 2 is mineral insulation layer, and 3 is metallic conductor, and 4 is aluminum metal sheath, and 5 is profile of tooth Anti-rot plastic layer, 6 is mineral oxygen barrier layer, and 7 is the first flame-retardant layer, and 8 is the fire-resistant expanding layer of mineral, 9 is metal shielding, and 10 is the second flame-retardant layer, and 11 is low-smoke non-halogen flame-retardant oversheath.
Detailed description of the invention
Further illustrate the present invention below by the mode of embodiment, but the most therefore limit the present invention to Among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example, according to often Rule method and condition, or select according to catalogue.
In following embodiment, material raw material used is the most commercially.
Embodiment 1
A kind of insulating protective metal shell of mineral fire-resisting cable, its cross section structure is as it is shown in figure 1, this mineral insulation Being provided with four insulated wire cores 1 in protective metal shell fire-resisting cable, the outer layer of insulated wire cores 1 is mineral insulation Layer 2 and in be provided with metallic conductor 3, aluminum metal sheath 4 is coated on the outside of four insulated wire cores 1, The outer layer of aluminum metal sheath 4 is coated with profile of tooth anti-rot plastic layer 5 successively, mineral oxygen barrier layer 6, first hinders Combustion layer 7, the fire-resistant expanding layer of mineral 8, metal shielding the 9, second flame-retardant layer 10 and low smoke and zero halogen resistance Combustion oversheath 11.Wherein, mineral insulation layer 2 is made up of fireproof mica material, and layer thickness is 0.7mm; Metallic conductor 3 is formed by copper monofilament is stranded, and sectional area is 35mm2;The thickness of aluminum metal sheath 4 is 1.2mm;Profile of tooth anti-rot plastic layer 5 is made up of crosslinked polyethylene material, and layer thickness is 1.0mm, tooth depth For 0.6mm;The material that mineral oxygen barrier layer 6 is combined by perlite, magnesium hydroxide and graphite is made, layer Thickness is 1.0mm;First flame-retardant layer 7 is made up of LSOH anti-flaming material, and layer thickness is 1.2mm; The fire-resistant expanding layer of mineral 8 is combined by waterglass, perlite, magnesium hydroxide, aluminium hydroxide and graphite Material is made, and layer thickness is 2.0mm;Metal shielding 9 is formed by proof copper-wire braided, and brass wire diameter is 0.6mm, layer thickness is 1.2mm;Second flame-retardant layer 10 is made up of fire resistant ceramic silicone rubber material, layer Thickness is 1.2mm;Low-smoke non-halogen flame-retardant oversheath 11 is made up of the polyolefin material of low-smoke non-halogen flame-retardant, Oversheath thickness is 2.2mm.
It is prepared by following manufacture method:
(1) copper conductor monofilament being twisted into sectional area is 35mm2Metallic conductor, then outside it Wrapped fire-resistant isinglass belt, wrapped thickness is 0.7mm, forms a mineral insulation layer, prepares a covered wire Core;
(2) four insulated wire cores are twisted into cable core, cable core surfacing, no concave-convex or distortion;So After by aluminum metal brush unit the foul such as dust removing surface, then wash away surface with online purging system Greasy dirt, make aluminum metal surface cleaning clean, be extruded in cable core continuously by cleaning clean metallic aluminium afterwards Outside, extrudes the cavity of front extruder and is first placed in preheating 4.5 hours in the baking oven of 600 DEG C, extrude temperature Being 500 DEG C, the thickness extruded is 1.2mm, to form an aluminum metal sheath, the conductor of aluminum metal sheath D.C. resistance is more than the requirement of corresponding copper ground connection core;
(3) 90 type extruders are used to be extruded in outside aluminum metal sheath by crosslinked polyethylene, the temperature extruded Degree experience seven temperature provinces, respectively 170~175 DEG C, 175~180 DEG C, 180~185 DEG C, 185~190 DEG C, 190~195 DEG C, 190~195 DEG C and 195~200 DEG C, the thickness extruded is 1.0mm, to form a profile of tooth Anti-rot plastic layer, tooth depth is 0.6mm;
(4) use cold-extruded mode that the compound of perlite, magnesium hydroxide and graphite is extruded in profile of tooth to prevent Outside rotten plastic layer, the thickness extruded is 1.0mm, forms a mineral oxygen barrier layer;
(5) by LSOH anti-flaming material band around wrapping in outside mineral oxygen barrier layer, wrapped thickness is 1.2mm, forms one first flame-retardant layer;
(6) use cold-extruded mode by waterglass, perlite, magnesium hydroxide, aluminium hydroxide and graphite Compound is extruded in outside the first flame-retardant layer, and the thickness extruded is 2.0mm, forms a mineral fire-resistant swollen Swollen layer;
(7) weave with the copper wire of a diameter of 0.6mm outside the fire-resistant expanding layer of mineral, braiding Thickness is 1.2mm, forms a metal shielding;
(8) by fire resistant ceramic silicone rubber band around wrapping in outside metal shielding, wrapped thickness is 1.2mm, Form one second flame-retardant layer;
(9) 120 type extruders are used to be extruded in outside the second flame-retardant layer by the polyolefin of low-smoke non-halogen flame-retardant Side, the temperature extruded experience eight temperature provinces, respectively 90~95 DEG C, 90~95 DEG C, 95~100 DEG C, 100~110 DEG C, 115~120 DEG C, 120~125 DEG C, 125~130 DEG C and 130~135 DEG C, the thickness extruded For 2.2mm, to form a low-smoke non-halogen flame-retardant oversheath.
Embodiment 2
A kind of insulating protective metal shell of mineral fire-resisting cable, its cross section structure is as it is shown in figure 1, this mineral insulation Being provided with an insulated wire cores 1 in protective metal shell fire-resisting cable, the outer layer of insulated wire cores 1 is mineral insulation Layer 2 and in be provided with metallic conductor 3, aluminum metal sheath 4 is coated on the outside of an insulated wire cores 1, The outer layer of aluminum metal sheath 4 is coated with profile of tooth anti-rot plastic layer 5 successively, mineral oxygen barrier layer 6, first hinders Combustion layer 7, the fire-resistant expanding layer of mineral 8, metal shielding the 9, second flame-retardant layer 10 and low smoke and zero halogen resistance Combustion oversheath 11.Wherein, mineral insulation layer 2 is made up of fireproof mica material, and layer thickness is 1.8mm; Metallic conductor 3 is formed by copper monofilament is stranded, and sectional area is 630mm2;The thickness of aluminum metal sheath 4 is 1.5mm;Profile of tooth anti-rot plastic layer 5 is made up of polyethylene material, and layer thickness is 1.0mm, and tooth depth is 0.6mm;The material that mineral oxygen barrier layer 6 is combined by perlite, magnesium hydroxide and graphite is made, thickness Thickness is 2.0mm;First flame-retardant layer 7 is made up of LSOH anti-flaming material, and layer thickness is 1.8mm;Ore deposit The material that the fire-resistant expanding layer of material 8 is combined by waterglass, perlite, magnesium hydroxide, aluminium hydroxide and graphite Matter is made, and layer thickness is 3.0mm;Metal shielding 9 is formed by stainless steel silk braiding, and stainless steel silk is straight Footpath is 1.0mm, and layer thickness is 2.0mm;Second flame-retardant layer 10 is made up of fire resistant ceramic silicone rubber material, Layer thickness is 1.8mm;Low-smoke non-halogen flame-retardant oversheath 11 is by the elastomer material system of low-smoke non-halogen flame-retardant Becoming, oversheath thickness is 3.3mm.
It is prepared by following manufacture method:
(1) copper conductor monofilament being twisted into sectional area is 630mm2Metallic conductor, then outside it Wrapped fire-resistant isinglass belt, wrapped thickness is 1.8mm, forms a mineral insulation layer, prepares a covered wire Core;
(2) insulated wire cores surfacing, no concave-convex or distortion;Then aluminum metal brush unit is gone The fouls such as the dust falling surface, then the greasy dirt on surface is washed away with online purging system, make aluminum metal surface clear Clean totally, afterwards by clean clean metallic aluminium be extruded in continuously outside cable core, extrude the chamber of front extruder Body preheats 4 hours in being first placed in the baking oven of 650 DEG C, and extruding temperature is 480 DEG C, and the thickness extruded is 1.5mm, to form an aluminum metal sheath, the conductor DC resistance of aluminum metal sheath connects more than corresponding copper The requirement of wire core;
(3) 90 type extruders are used to be extruded in outside aluminum metal sheath by polyethylene, the temperature warp extruded Go through seven temperature provinces, respectively 170~175 DEG C, 175~180 DEG C, 180~185 DEG C, 185~190 DEG C, 190~195 DEG C, 190~195 DEG C and 195~200 DEG C, the thickness extruded is 1.0mm, to form a profile of tooth Anti-rot plastic layer, tooth depth is 0.6mm;
(4) use cold-extruded mode that the compound of perlite, magnesium hydroxide and graphite is extruded in profile of tooth to prevent Outside rotten plastic layer, the thickness extruded is 2.0mm, forms a mineral oxygen barrier layer;
(5) by LSOH anti-flaming material band around wrapping in outside mineral oxygen barrier layer, wrapped thickness is 1.8mm, forms one first flame-retardant layer;
(6) use cold-extruded mode by waterglass, perlite, magnesium hydroxide, aluminium hydroxide and graphite Compound is extruded in outside the first flame-retardant layer, and the thickness extruded is 3.0mm, forms a mineral fire-resistant swollen Swollen layer;
(7) weave with the stainless steel silk of a diameter of 1.0mm outside the fire-resistant expanding layer of mineral, Braiding thickness is 2.0mm, forms a metal shielding;
(8) by fire resistant ceramic silicone rubber band around wrapping in outside metal shielding, wrapped thickness is 1.8mm, Form one second flame-retardant layer;
(9) 120 type extruders are used to be extruded in outside the second flame-retardant layer by the elastomer of low-smoke non-halogen flame-retardant Side, the temperature extruded experience eight temperature provinces, respectively 90~95 DEG C, 90~95 DEG C, 95~100 DEG C, 100~110 DEG C, 115~120 DEG C, 120~125 DEG C, 125~130 DEG C and 130~135 DEG C, the thickness extruded For 3.3mm, to form a low-smoke non-halogen flame-retardant oversheath.
Embodiment 3
A kind of insulating protective metal shell of mineral fire-resisting cable, its cross section structure is as it is shown in figure 1, this mineral insulation Being provided with five insulated wire cores 1 in protective metal shell fire-resisting cable, the outer layer of insulated wire cores 1 is mineral insulation Layer 2 and in be provided with metallic conductor 3, aluminum metal sheath 4 is coated on the outside of five insulated wire cores 1, The outer layer of aluminum metal sheath 4 is coated with profile of tooth anti-rot plastic layer 5 successively, mineral oxygen barrier layer 6, first hinders Combustion layer 7, the fire-resistant expanding layer of mineral 8, metal shielding the 9, second flame-retardant layer 10 and low smoke and zero halogen resistance Combustion oversheath 11.Wherein, mineral insulation layer 2 is made up of fireproof mica material, and layer thickness is 0.4mm; Metallic conductor 3 is formed by copper monofilament is stranded, and sectional area is 1.5mm2;The thickness of aluminum metal sheath 4 is 1.2mm;Profile of tooth anti-rot plastic layer 5 is made up of crosslinked polyethylene material, and layer thickness is 1.0mm, tooth depth For 0.6mm;The material that mineral oxygen barrier layer 6 is combined by perlite, magnesium hydroxide and graphite is made, layer Thickness is 1.0mm;First flame-retardant layer 7 is made up of LSOH anti-flaming material, and layer thickness is 1.2mm; The fire-resistant expanding layer of mineral 8 is combined by waterglass, perlite, magnesium hydroxide, aluminium hydroxide and graphite Material is made, and layer thickness is 2.0mm;Metal shielding 9 is formed by proof copper-wire braided, and brass wire diameter is 0.6mm, layer thickness is 1.2mm;Second flame-retardant layer 10 is made up of fire resistant ceramic silicone rubber material, layer Thickness is 1.2mm;Low-smoke non-halogen flame-retardant oversheath 11 is made up of the polyolefin material of low-smoke non-halogen flame-retardant, Oversheath thickness is 1.8mm.
It is prepared by following manufacture method:
(1) copper conductor monofilament being twisted into sectional area is 1.5mm2Metallic conductor, then outside it Wrapped fire-resistant isinglass belt, wrapped thickness is 0.4mm, forms a mineral insulation layer, prepares a covered wire Core;
(2) five insulated wire cores are twisted into cable core, cable core surfacing, no concave-convex or distortion;So After by aluminum metal brush unit the foul such as dust removing surface, then wash away surface with online purging system Greasy dirt, make aluminum metal surface cleaning clean, be extruded in cable core continuously by cleaning clean metallic aluminium afterwards Outside, extrudes the cavity of front extruder and is first placed in preheating 5 hours in the baking oven of 550 DEG C, and extruding temperature is 530 DEG C, the thickness extruded is 1.2mm, and to form an aluminum metal sheath, the conductor of aluminum metal sheath is straight Leakage resistance is more than the requirement of corresponding copper ground connection core;
(3) 90 type extruders are used to be extruded in outside aluminum metal sheath by crosslinked polyethylene, the temperature extruded Degree experience seven temperature provinces, respectively 170~175 DEG C, 175~180 DEG C, 180~185 DEG C, 185~190 DEG C, 190~195 DEG C, 190~195 DEG C and 195~200 DEG C, the thickness extruded is 1.0mm, to form a profile of tooth Anti-rot plastic layer, tooth depth is 0.6mm;
(4) use cold-extruded mode that the compound of perlite, magnesium hydroxide and graphite is extruded in profile of tooth to prevent Outside rotten plastic layer, the thickness extruded is 1.0mm, forms a mineral oxygen barrier layer;
(5) by LSOH anti-flaming material band around wrapping in outside mineral oxygen barrier layer, wrapped thickness is 1.2mm, forms one first flame-retardant layer;
(6) use cold-extruded mode by waterglass, perlite, magnesium hydroxide, aluminium hydroxide and graphite Compound is extruded in outside the first flame-retardant layer, and the thickness extruded is 2.0mm, forms a mineral fire-resistant swollen Swollen layer;
(7) weave with the copper wire of a diameter of 0.6mm outside the fire-resistant expanding layer of mineral, braiding Thickness is 1.2mm, forms a metal shielding;
(8) by fire resistant ceramic silicone rubber band around wrapping in outside metal shielding, wrapped thickness is 1.2mm, Form one second flame-retardant layer;
(9) 120 type extruders are used to be extruded in outside the second flame-retardant layer by the polyolefin of low-smoke non-halogen flame-retardant Side, the temperature extruded experience eight temperature provinces, respectively 90~95 DEG C, 90~95 DEG C, 95~100 DEG C, 100~110 DEG C, 115~120 DEG C, 120~125 DEG C, 125~130 DEG C and 130~135 DEG C, the thickness extruded For 1.8mm, to form a low-smoke non-halogen flame-retardant oversheath.
Effect example 1
The insulating protective metal shell of mineral fire-resisting cable of the present invention is carried out speed of production, cable length, aluminium gold Belong to the test of the tests such as sheath D.C. resistance, waterproof test and fire resistant flame retardant anticollision, and use existing product Disclosed in product i.e. Chinese utility model patent CN2745194A, cable is as a control group, concrete test result As shown in table 1.
Table 1
As can be seen from the above table, with matched group Chinese utility model patent CN2745194A disclosed in cable Comparing, the insulating protective metal shell of mineral fire-resisting cable speed of production of the embodiment of the present invention 1 is slow, cable length Long, significantly improve production efficiency, simultaneously because the insulating protective metal shell of mineral fire-resisting cable of embodiment 1 Disclosure satisfy that the conductor DC resistance of regulation in GB 3956, cable can reduce by a core, by original 5 Core becomes 4 cores, saves the material of a corresponding copper conductor of core, although add aluminum metal set, but aluminum Proportion be 1/3rd of copper, operation has made root insulated wire cores less, has reduced manufacturing cost, more Add beneficially industrialization, and the aluminum metal set of the insulating protective metal shell of mineral fire-resisting cable of embodiment 1 is furnished with Special adapter, install more convenient reliably.Furthermore, the insulating protective metal shell of mineral of embodiment 1 is fire-resistant Cable meets the conductor DC resistance of regulation in GB 3956, can be as ground connection core (PE line or PEN Line) demand, and there is the waterproof and fire resistant flame retardant anticollision performance of excellence.Though the cable of matched group So also having water-proof function, but it is owing to being limited by technique, aluminum metal sheath D.C. resistance cannot meet Relevant regulations in GB 3956, it is impossible to use as ground connection core, although and it can pass through BS6387 Detection, but fire resistance is not highly stable, and is unable to reach 2 hours of BS8491 regulation Fire-resistant bump test.Visible, the insulating protective metal shell of mineral fire-resisting cable of the embodiment of the present invention 1 relatively compares Group has more excellent fire resistant flame retardant anticollision performance, and the fire resistant flame retardant anticollision effect of embodiment 2~3 is with real Execute example 1 suitable.

Claims (10)

1. an insulating protective metal shell of mineral fire-resisting cable, it is characterised in that it includes being located at described ore deposit Some insulated wire cores within thing insulated metal sheath fire-resistant cable, an aluminum metal sheath, an anticorrosion is moulded The bed of material, a mineral oxygen barrier layer, one first flame-retardant layer, a fire-resistant expanding layer of mineral, a metal is strengthened Layer, one second flame-retardant layer and the low smoke and zero halogen being located at described insulating protective metal shell of mineral fire-resisting cable outer layer Fire-retardant oversheath;Described insulated wire cores is the metallic conductor that external sheath has a mineral insulation layer;Described Aluminum metal sheath is coated on the outside of described some insulated wire cores, and the outer layer of described aluminum metal sheath is successively It is coated with described anti-rot plastic layer, described mineral oxygen barrier layer, described first flame-retardant layer, described mineral resistance to Fire expanding layer, described metal shielding, described second flame-retardant layer and described low-smoke non-halogen flame-retardant oversheath.
2. insulating protective metal shell of mineral fire-resisting cable as claimed in claim 1, it is characterised in that institute The radical stating insulated wire cores is 1~5;
And/or, the sectional area of described metallic conductor is 1.5~630mm2
And/or, the thickness of described mineral insulation layer is 0.4~1.8mm;
And/or, the thickness of described aluminum metal sheath is 1.2~1.8mm;
And/or, the thickness of described anti-rot plastic layer is 1.0mm;
And/or, described anti-rot plastic layer is profile of tooth anti-rot plastic layer, and the tooth height of described profile of tooth is 0.6mm;
And/or, the thickness of described mineral oxygen barrier layer is 1.0~2.0mm;
And/or, the thickness of described first flame-retardant layer is 1.2~1.8mm;
And/or, the thickness of the fire-resistant expanding layer of described mineral is 2.0~3.0mm;
And/or, the thickness of described metal shielding is 1.2~2.0mm;
And/or, described metal shielding is formed by metal wire knitted;
And/or, the thickness of described second flame-retardant layer is 1.2~1.8mm;
And/or, the thickness of described low-smoke non-halogen flame-retardant oversheath is 1.8~3.8mm.
3. insulating protective metal shell of mineral fire-resisting cable as claimed in claim 2, it is characterised in that institute The radical stating insulated wire cores is 1~4;
And/or, the thickness of described aluminum metal sheath is 1.2~1.5mm;
And/or, described wiry a diameter of 0.6~1.0mm;
And/or, described tinsel is stainless steel silk and/or copper wire;
And/or, the thickness of described low-smoke non-halogen flame-retardant oversheath is 1.8~3.3mm.
4. insulating protective metal shell of mineral fire-resisting cable as claimed in claim 1, it is characterised in that institute The material stating metallic conductor is copper;
And/or, the material of described mineral insulation layer is fireproof mica;
And/or, the material of described anti-rot plastic layer is polyethylene and/or crosslinked polyethylene;
And/or, the material of described mineral oxygen barrier layer is made up of perlite, magnesium hydroxide and graphite;
And/or, the material of described first flame-retardant layer is halogen-free low-smoke flame retardant material;
And/or, the material of the fire-resistant expanding layer of described mineral is by waterglass, perlite, magnesium hydroxide, hydrogen Aluminium oxide and graphite composition;
And/or, the material of described second flame-retardant layer is fire resistant ceramic silicone rubber;
And/or, the polyolefin that material is low-smoke non-halogen flame-retardant of described low-smoke non-halogen flame-retardant oversheath or elasticity Body material.
5. the manufacture of insulating protective metal shell of mineral fire-resisting cable as described in any one of Claims 1 to 4 Method, it is characterised in that it comprises the steps:
(1) by mineral insulation material around wrapping in outside metallic conductor, a mineral insulation layer is formed, Prepare an insulated wire cores;
(2) some described insulated wire cores are twisted into cable core, then aluminum metal is extruded in continuously institute State outside cable core, form an aluminum metal sheath;
(3) anti-rot plastic is extruded in outside described aluminum metal sheath, forms an anti-rot plastic layer;
(4) mineral oxygen barrier material is extruded in outside described anti-rot plastic layer, formed a mineral every Oxygen layer;
(5) by fire proofing around wrapping in outside described mineral oxygen barrier layer, one first flame-retardant layer is formed;
(6) mineral refractory swelling material is extruded in outside described first flame-retardant layer, forms mineral The fire-resistant expanding layer of matter;
(7) weave with tinsel outside the fire-resistant expanding layer of described mineral, form a metal and add Strong layer;
(8) by fire proofing around wrapping in outside described metal shielding, one second flame-retardant layer is formed;
(9) halogen-free low-smoke flame retardant material is extruded in outside described second flame-retardant layer, formed a low cigarette without The fire-retardant oversheath of halogen.
6. manufacture method as claimed in claim 5, it is characterised in that in step (1), described gold Belong to conductor to be formed by conductor monofilament is stranded;
And/or, in step (1), the sectional area of described metallic conductor is 1.5~630mm2
And/or, in step (1), described mineral insulation material is fireproof mica;
And/or, in step (2), described cable core is formed by 1~5 described insulated wire cores is stranded;
And/or, in step (2), described aluminum metal is extruded continuously before, described aluminum metal is through pre-place Reason, described pretreatment is carried out as steps described below: first brush away the dust foul on aluminum metal surface with hairbrush, Clean the greasy dirt removing aluminum metal surface the most again;
And/or, in step (2), described in extrude employing extruder carry out, on the die holder of described extruder Equipped with feeding guide-plate and cavity, described cavity through preheating, described in preheat be 550~650 DEG C of process 4~5 hours;
And/or, in step (2), described in the temperature that extrudes be 480~530 DEG C;
And/or, in step (2), described in the thickness that extrudes be 1.2~1.8mm;
And/or, in step (3), described anti-rot plastic is polyethylene and/or crosslinked polyethylene;
And/or, in step (3), described in extrude employing 90 type extruders and carry out, described in the temperature that extrudes Experience seven temperature provinces, respectively 170~175 DEG C, 175~180 DEG C, 180~185 DEG C, 185~190 DEG C, 190~195 DEG C, 190~195 DEG C and 195~200 DEG C.
7. manufacture method as claimed in claim 6, it is characterised in that in step (1), described gold Belong to conductor to be formed by copper monofilament is stranded;
And/or, in step (1), described wrapped thickness is 0.4~1.8mm;
And/or, in step (2), described cable core is formed by 1~4 described insulated wire cores is stranded;
And/or, in step (2), described in preheat be 600 DEG C process 4~5 hours;
And/or, in step (2), described in the temperature that extrudes be 500 DEG C;
And/or, in step (2), described in the thickness that extrudes be 1.2~1.5mm;
And/or, in step (3), described in the thickness that extrudes be 1.0mm;
And/or, in step (3), described anti-rot plastic layer is profile of tooth anti-rot plastic layer, described profile of tooth Tooth height is 0.6mm.
8. manufacture method as claimed in claim 5, it is characterised in that in step (4), described ore deposit Material oxygen barrier material is made up of perlite, magnesium hydroxide and graphite;
And/or, in step (4), described in extrude employing cold-extruded mode;
And/or, in step (5), described fire proofing is halogen-free low-smoke flame retardant material;
And/or, in step (6), described mineral refractory swelling material is by waterglass, perlite, hydrogen Magnesium oxide, aluminium hydroxide and graphite composition;
And/or, in step (6), described in extrude employing cold-extruded mode;
And/or, in step (7), described wiry a diameter of 0.6~1.0mm;
And/or, in step (8), described fire proofing is fire resistant ceramic silicone rubber;
And/or, in step (9), described halogen-free low-smoke flame retardant material is the polyolefin of low-smoke non-halogen flame-retardant Or elastomeric material;
And/or, in step (9), described in extrude employing 120 type extruders and carry out, described in the temperature that extrudes Degree experience eight temperature provinces, respectively 90~95 DEG C, 90~95 DEG C, 95~100 DEG C, 100~110 DEG C, 115~120 DEG C, 120~125 DEG C, 125~130 DEG C and 130~135 DEG C;
And/or, in step (9), described in the thickness that extrudes be 1.8~3.8mm.
9. manufacture method as claimed in claim 8, it is characterised in that in step (4), described crowded The thickness of bag is 1.0~2.0mm;
And/or, in step (5), described wrapped thickness is 1.2~1.8mm;
And/or, in step (6), described in the thickness that extrudes be 2.0~3.0mm;
And/or, in step (7), described tinsel is stainless steel silk and/or copper wire;
And/or, in step (7), the thickness of described braiding is 1.2~2.0mm;
And/or, in step (8), described wrapped thickness is 1.2~1.8mm;
And/or, in step (9), described in the thickness that extrudes be 1.8~3.3mm.
10. one kind as described in any one of Claims 1 to 4 insulating protective metal shell of mineral fire-resisting cable at fire Under the conditions of need the distribution of the complete performance requirement of holding circuit, illuminate, control and application in warning system.
CN201510253757.6A 2015-05-18 2015-05-18 A kind of insulating protective metal shell of mineral fire-resisting cable and manufacture method thereof and application Pending CN106297994A (en)

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CN107644707A (en) * 2017-11-15 2018-01-30 江苏凯达电缆有限公司 A kind of mineral insulation fire resistant cable
CN115376729A (en) * 2022-09-02 2022-11-22 青岛胶州湾电缆有限公司 Flexible isolated form fireproof cable
CN117936178A (en) * 2024-03-18 2024-04-26 广州南洋电缆集团有限公司 Fire-retardant fire-resistant cable for monitoring line for fire control

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CN117936178A (en) * 2024-03-18 2024-04-26 广州南洋电缆集团有限公司 Fire-retardant fire-resistant cable for monitoring line for fire control

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