CN110010273A - Flexible fire-proof cable - Google Patents
Flexible fire-proof cable Download PDFInfo
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- CN110010273A CN110010273A CN201910414518.2A CN201910414518A CN110010273A CN 110010273 A CN110010273 A CN 110010273A CN 201910414518 A CN201910414518 A CN 201910414518A CN 110010273 A CN110010273 A CN 110010273A
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- 239000010410 layer Substances 0.000 claims abstract description 52
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000009413 insulation Methods 0.000 claims abstract description 36
- 229910052802 copper Inorganic materials 0.000 claims abstract description 34
- 239000010949 copper Substances 0.000 claims abstract description 34
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 28
- 239000011707 mineral Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- -1 polyethylene Polymers 0.000 claims abstract description 19
- 239000004698 Polyethylene Substances 0.000 claims abstract description 18
- 229920000573 polyethylene Polymers 0.000 claims abstract description 17
- 239000012792 core layer Substances 0.000 claims abstract description 15
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 15
- 150000002367 halogens Chemical class 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000011049 filling Methods 0.000 claims description 12
- 239000011295 pitch Substances 0.000 claims description 12
- 238000005491 wire drawing Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000010445 mica Substances 0.000 claims description 9
- 229910052618 mica group Inorganic materials 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000004519 grease Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000004500 asepsis Methods 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 12
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 239000000395 magnesium oxide Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0006—Apparatus or processes specially adapted for manufacturing conductors or cables for reducing the size of conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of flexible fire-proof cables comprising a cable main body, cable main body are coated by multilayered structure and designed, its innermost layer is copper core layer, the outside of copper core layer is mineral insulation, and the outside of mineral insulation is polyethylene clad, and the outside of polyethylene clad is flexible copper layer；When the cable main body occurs in the form of more in same cable, the outside of copper core layer is mineral insulation, the outside of mineral insulation is polyethylene clad, when the base core of composition cable main body uses at the same time through the above structure, by coating one layer of Halogen restrictive coating outside more foundation cores, the outside of the Halogen restrictive coating is outer layer flexibility copper pipe；Fill sludge in gap between Halogen restrictive coating and Duo Gen cable main body.There is this flexible fire-proof cable good fire resistance, the characteristic of corrosion resistance and asepsis environment-protecting, while the present invention also to have good flexible, and minimum bending radius is 69 times of the outside diameter of cable.
Description
Technical field
The present invention relates to fireproof cable technical field more particularly to a kind of flexible fire-proof cables.
Background technique
In field of cables, current universal architecture is all for conductor inside center, and conductor outside is insulating layer, insulating layer
Outer layer be braided outer conductor layer, outermost layer is arranged plastic sheath layer, and such cable has that production is simple, it is excellent to be easy to promote
Point, but it cannot achieve good fire line, and such cable No-mistake Principle defencive function, be easy to press through because of overcurrent or height
It is high and lead to insulation fever aging and breakdown, furthermore, existing cable operating temperature is low, non-refractory, is easy under high temperature
Lead to rupture of line；Existing cable is provided with the outer fireproof covering of plastics, so there is certain waterproofness, but its antiseptic property
Difference, there is biggish security risks for use under some corrosive environments；The rigidity of existing cable is too strong, when by bending
It is easy to cause mechanicalness to damage.
How to be improved by technology, designed a novel as industry technical staff for the drawback in the prior art
Flexible fire-proof cable, can solve the poor corrosion resistance of cable in the prior art, non-refractory, fire prevention difference and flexible difference
Drawback is existing industry technical staff technical problem urgently to be resolved.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of flexible fire-proof cables, can lead to
Novel cable structure is crossed to promote its durability and safety；The drawbacks of to improve existing fireproof cable.
A kind of flexible fire-proof cable a comprising cable main body, cable main body is coated by multilayered structure and designed, most interior
Layer is copper core layer, and the outside of copper core layer is mineral insulation, and the outside of mineral insulation is polyethylene clad, polyethylene cladding
The outside of layer is flexible copper layer.
Further, when the cable main body occurs in the form of more in same cable, the outside of copper core layer is mine
Object insulating layer, the outside of mineral insulation are polyethylene clad, constitute the base core of cable main body, more foundation through the above structure
For core simultaneously in use, by coating one layer of Halogen restrictive coating outside more foundation cores, the outside of the Halogen restrictive coating is outer
The flexible copper pipe of layer；Sludge is filled in gap between Halogen restrictive coating and Duo Gen cable main body.
The mineral insulation is mica tape.
Flexible fire-proof cable as described above, production method are specific as follows:
Wire drawing: using the wire drawing machine of 13 moulds, under room temperature working environment, conductor surface temperature reaches 40 DEG C or so, from Φ
8.0mm is drawn to regulation string diameter, and is lubricated by water and wire drawing oil and is cooled down the mixed of the water and wire drawing oil
It closes liquid to be made by mixing with the ratio of 1:9, maximum annealing then is carried out to the conductor drawn again, 550 DEG C of annealing temperature, is moved back
After being preheated to annealing temperature value first when fiery, be quenched using water-cooling pattern, cooling time 2S；
Twisted wire: 54 disk disk winches are used, process, the conductor of adjacent level are twisted to opposite each layer of conductor at same direction；Often
Layer conductor carries out process by different pitches, and following table is arranged in pitch:
| Disk number | Pitch range | Maximum speed | Receive first disk specification |
| 12 | 56~962mm | 173m/min | PN800-1600 |
| 18 | 64-1095mm | 152m/min | PN800-1600 |
| 24 | 73-1245mm | 133m/min | PN800-1600 |
；
The 54 disk disk winches, whole point of 3 sections of designs；
Mica tape: using double end mica winding machine, and every layer of wrapped overlap rate is controlled in 10-20%；
Polyethylene clad squeezes out: using the extruder of 70 specification of Φ, changing 6 warm areas of equipment point, and sets equipped with ultraviolet irradiation
It is standby；When extrusion, extruder warm area is gradually risen by mixed material area to head extrusion area, and temperature range is uniformly distributed between 170~210 DEG C
Setting；Ultraviolet irradiation temperature is crosslinked operation at 350 DEG C, by ultraviolet irradiation completion, and the core wire squeezed out is in ultraviolet light spoke
It is different according to the difference of core wire specification according to the residence time in area, as follows referring in particular to the time:
| Square number mm2 | Insulation thickness mm | Speed of production | Up to hot elongation percentage |
| 10 | 0.7 | 0.7-1m/s | 95-99% |
| 16 | 0.7 | 0.7-1m/s | 95-99% |
| 25 | 0.9 | 0.6-0.9m/s | 95-99% |
| 35 | 0.9 | 0.6-0.9m/s | 95-99% |
| 50 | 1.0 | 0.6-0.8m/s | 95-99% |
| 70 | 1.1 | 0.6-0.7m/s | 95-99% |
| 95 | 1.1 | 0.6m/s | 95-100% |
| 120 | 1.2 | 0.5-0.6m/s | 95-100% |
| 150 | 1.4 | 0.4-0.5m/s | 95-100% |
| 185 | 1.6 | 0.4-0.5m/s | 95-100% |
| 240 | 1.7 | 0.4-0.5m/s | 95-100% |
| 300 | 1.8 | 0.4m/s | 95-100% |
Core after irradiation enters cooling pond and carries out cooling and shaping；
Stranding: 1.6 meters of cable-formers are used；Stranding is the process to insulation core wire, it is ensured that whole rounding, when stranding operation,
Process should be carried out with same direction and same pitch；
Sludge filling: using sludge filling machine, and powder is imposed grease and a small amount of water in feeding port and is sufficiently mixed
The mixed proportion of conjunction, powder and grease and water is 10:3:1, and the core wire semi-finished product good to stranding carry out gap filling；
Twining package tape: twining package tape operation is synchronous with sludge filling step to be carried out, using glass fibre band, by filled mine
Mud drum overlays on whole cable；
High temperature resistant restrictive coating: using 120 extruder of Φ, point 9 warm areas, respectively one area of machine barrel, 2nd area of machine barrel, machine barrel three
Area, 4th area of machine barrel, 5th area of machine barrel, 6th area of machine barrel, flange, one area of head, 2nd area of head, are again coupled to perseverance after connecting with upper curtate
Reservoir；Because of the particularity of material, it is to be ensured that the temperature of each position reaches in processing range value, the temperature range requirements
150-170 DEG C, constant temperature water tank temperature controls in the range of 60-70；
Flexible copper fireprotection layer is carried out chain armouring to the copper strips of specific thickness, is met the whole of product using chain armoring machine
Body pliability, pliability maximum can accomplish 8 times of diameter values.
The invention has the following advantages: the present invention, by designing above, the flexible fire-proof cable of production is had
Have the beneficial effect that description: this flexible fire-proof cable has good fire resistance, and cable itself can not only burn, mine
The use of object insulating layer has good anti-flammability, even if cable can still work normally, and only in the case where the kindling of outside
Want flame temperature be lower than copper melting temperature, fire behavior eliminate after, no replacement is required for cable, may continue to using；It is with good
Overload protection performance, even if cable punctures because current overload or voltage are excessive, in breakdown moment, magnesia is at breakdown point
When melt, be still magnesia at breakdown point, overload eliminate after, cable performance will not generate variation, may continue to normal use；This
Flexible fire-proof cable transmits the identical magnitude of current using that can have biggish current-carrying capability after the setting of mineral insulation, if choosing
With mineral insulated cable than Plastic cable 1 to 2 section grades of reduction or more greatly；The operating temperature of this flexible fire-proof cable
Height, the melting temperature of mineral insulation magnesia is much higher than the melting temperature of copper, thus bare cable highest normal working temperature can
Up to 250 DEG C, can be continued to run at 1083 DEG C of melting temperature close to copper in short term；Since this mineral insulated cable is using seamless
Copper pipe makees sheath, is dense compaction body between conductor, insulation and sheath three, so it, which has, prevents water, moisture, oil and someization
The infringement of substance is learned, and has and flammable oil vapour, gas and flame Sou is prevented to prolong；It is with good shielding properties:
Cable copper sheath is optimal shielding protection layer, can not only prevent interference of the cable to other cables itself, but also can prevent extraneous electricity
Interference of the magnetic field to itself；It is with good capability of resistance to radiation: since cable composition material is inorganic matter, thus being subjected to
After nuclear radiation, the electrical and mechanical performance of cable will not generate any variation；The composition material of this flexible fire-proof cable is nothing
Machine object is free of any organic matter, thus cable will not generate a bit smog, more even in 1000 DEG C or more heating
Halogen-free and poisonous gas；Furthermore this flexible fire-proof cable has the advantages that high mechanical strength, and the construction of cable is closely knit, firm
It is durable, extruding, shock, bending, flattening of external force etc. can be born, when cable is flattened to the 1/3 2/3 of the original outside diameter of cable,
May continue to safe normal use, bending property is excellent: cable has general plastic cable can not after sufficiently annealing
The flexible compared, minimum bending radius are 69 times of the outside diameter of cable, if need to repeat, be repeatedly bent, do not need to use
Blowtorch heats bending part；Furthermore this flexible fire-proof cable is when in use, does not need independent earth lead, because cable
Copper sheath has played the role of earth lead, and can provide fabulous low ground resistance, and compared with organic cable, it can be saved
Save a ground wire.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
The schematic perspective view that Fig. 1 is cable main body of the present invention when being single state；
The schematic perspective view that Fig. 2 is cable main body of the present invention when being more states；
In figure, 1, copper core layer, 2, mineral insulation, 3, polyethylene clad, 4, flexible copper layer, 5, Halogen restrictive coating, 6, outer
The flexible copper pipe of layer, 7, cable main body, 8, sludge.
Specific embodiment
Careful description is carried out to the present invention below, those skilled in the art can be light by content disclosed by this specification
It changes places and understands other advantages and efficacy of the present invention.
A kind of flexible fire-proof cable shown in reference to the accompanying drawings a comprising cable main body 7, cable main body 7 is by multilayer knot
Structure cladding design, innermost layer are copper core layer 1, and the outside of copper core layer 1 is mineral insulation 2, and the outside of mineral insulation 2 is poly-
Ethylene clad 3, the outside of polyethylene clad 3 are flexible copper layer 4, and the mineral insulation 2 uses mica tape material；
On the basis of the design of the above structure, pipeline outer layer is caused to wear in cable laying in order to prevent, the copper core layer 1
Outside be mineral insulation 2, the outside of mineral insulation 2 is polyethylene clad 3, and the outside of polyethylene clad 3 is soft
Property copper layer 4, the protection of 7 outer layer of cable main body can be realized by flexible copper layer 4.On the basis of such structure setting, this
Cable described in invention product can be made of multiple cable main bodies 7, and structure setting is as shown in Fig. 2, the outside of copper core layer 1 is mine
Object insulating layer 2, the outside of mineral insulation 2 are polyethylene clad 3, constitute the base core of cable main body through the above structure, more
Foundation core is simultaneously in use, by one layer of Halogen restrictive coating 5 of cladding outside more foundation cores, outside the Halogen restrictive coating 5
Portion is outer layer flexibility copper pipe 6；Fill sludge 8 in gap between Halogen restrictive coating 5 and Duo Gen cable main body 7.
Flexible fire-proof cable as described above, below will be by four cable main bodies 7 when coating setting, production method
Specific as follows: flexible fire-proof cable as described above, production method are specific as follows:
Technique explanation will be carried out by taking Φ 10mm string diameter as an example as follows:
Wire drawing: using the wire drawing machine of 13 moulds, under room temperature working environment, conductor surface temperature reaches 40 DEG C or so, from Φ
10mm is drawn to regulation string diameter, and the mixing of the water and wire drawing oil is lubricated and cooled down by water and wire drawing oil
Liquid is made by mixing with the ratio of 1:9, is then carried out maximum annealing to the conductor drawn again, 550 DEG C of annealing temperature, is preheated
It is instantaneous to reach annealing requirement to annealing temperature value, using water-cooling pattern 2S cooling time；Guarantee that conductor is soft, surface light
Clean, impulse- free robustness, without greasy dirt；
Twisted wire: using 54 disk disk winches, and each layer of conductor presses certain direction process, the conductor of adjacent level twist on the contrary,
In this manner guarantee process after conductor rounding and meet regulation, the conductor DC resistance under cross-sectional area of conductor meets national mark
Standard, used national standard are GB/T3956-2008, and every layer of conductor carries out process by different pitches, such as referring in particular to table
Under:
| Disk number | Pitch range | Maximum speed | Receive first disk specification |
| 12 | 56~962mm | 173m/min | PN800-1600 |
| 18 | 64-1095mm | 152m/min | PN800-1600 |
| 24 | 73-1245mm | 133m/min | PN800-1600 |
；The 54 disk disk winches, whole point of 3 sections of designs, purpose of design are that every section of pitch is adjustable, and has broken string to stop
Machine function passes through the use of 54 disk disk winches, it can be ensured that process conductive surface rounding is bright and clean, without random stock, surface impulse- free robustness and oil
It is dirty；
Mica tape: using double end mica winding machine, and every layer of wrapped overlap rate is controlled in 10-20%.
Polyethylene clad squeezes out: using the extruder of 70 specification of Φ, changing 6 warm areas of equipment point, and is furnished with ultraviolet light spoke
According to equipment；When extrusion, extruder warm area is gradually risen by mixed material area to head extrusion area, and temperature range is between 170~210 DEG C
It is uniformly arranged；Ultraviolet irradiation temperature is crosslinked operation, the core wire that extrusion molding finishes at 350 DEG C, by ultraviolet irradiation completion
The residence time is different according to the difference of core wire specification in ultraviolet irradiation area, reference table,
| Square number mm2 | Insulation thickness mm | Speed of production | Up to hot elongation percentage |
| 10 | 0.7 | 0.7-1m/s | 95-99% |
| 16 | 0.7 | 0.7-1m/s | 95-99% |
| 25 | 0.9 | 0.6-0.9m/s | 95-99% |
| 35 | 0.9 | 0.6-0.9m/s | 95-99% |
| 50 | 1.0 | 0.6-0.8m/s | 95-99% |
| 70 | 1.1 | 0.6-0.7m/s | 95-99% |
| 95 | 1.1 | 0.6m/s | 95-100% |
| 120 | 1.2 | 0.5-0.6m/s | 95-100% |
| 150 | 1.4 | 0.4-0.5m/s | 95-100% |
| 185 | 1.6 | 0.4-0.5m/s | 95-100% |
| 240 | 1.7 | 0.4-0.5m/s | 95-100% |
| 300 | 1.8 | 0.4m/s | 95-100% |
；The present embodiment is to select following data to carry out irradiation operation for being explained for 10mm core；
| Square number mm2 | Insulation thickness mm | Speed of production | Up to hot elongation percentage |
| 95 | 1.1 | 0.6m/s | 95-100% |
Core after irradiation enters cooling pond and carries out cooling and shaping；The purpose of ultraviolet irradiation is to make occur crosslinking shape inside core
State, core inner conductor molecular structure promote its electric conductivity to improve from linearly becoming netted, and anti-tensile slightly increases；
Stranding: 1.6 meters of cable-formers are used；Stranding is the process to insulation core wire, it is ensured that whole rounding, when stranding operation,
Process should be carried out with same direction and same pitch；
Sludge filling: using mine machine filling machine, and powder is imposed grease and a small amount of water in feeding port and is sufficiently mixed
It closes, powder and grease mixed proportion are 10:3:1, and the core wire semi-finished product good to stranding carry out gap filling, allow after populated
It is generally round；
Twining package tape: twining package tape operation is synchronous with sludge filling step to be carried out, using glass fibre band, by filled mine
Mud drum overlays on whole cable.
High temperature resistant restrictive coating: using 120 extruder of Φ, point 9 warm areas, respectively one area of machine barrel, 2nd area of machine barrel, machine
Cylinder 3rd area, 4th area of machine barrel, 5th area of machine barrel, 6th area of machine barrel, flange, one area of head, 2nd area of head, connect again after being connected with upper curtate
Connect constant temperature water tank.Because of the particularity of material, it is to be ensured that the temperature of each position reaches in processing range value, the temperature range
It is required that 150-170 DEG C, constant temperature water tank temperature controls in the range of 60-70, and monitoring ensures that the oversheath squeezed out meets technique and wants
It asks, and the particular/special requirement of material can be reached.
Flexible copper fireprotection layer is carried out chain armouring to the copper strips of specific thickness, is met product using chain armoring machine
Overall bulk softness, pliability maximum can accomplish 8 times of diameter values, and can accomplish waterproof, fire prevention.
After this flexible fire-proof cable is arranged using the above structure, pass through advantage such as following table brought by new structural design
Show:
1. fire resistance is excellent: after this flexible fire-proof cable is arranged using the above structure, Halogen restrictive coating 5 and outer layer flexibility copper pipe
6 and copper core layer 1 and mineral insulation 2 and flexible copper layer 4 itself can not burn, will not more cause fire source, even if catching fire
In the case where, it can still work normally；As long as flame temperature be lower than copper material melting temperature, fire behavior eliminate after, cable without
Need to change, may continue to using.
2. overload protection is strong: when circuit overload, existing plastic cable can cause insulation hair because of overcurrent or overvoltage
Heat ageing or breakdown are easy to cause fire；And for mineral insulated cable, as long as the melting temperature of copper material is not achieved in fever,
Cable body 7 is not damaged, even if because electric current is excessive or super-pressure causes moment to puncture, even if magnesia is molten at breakdown point
Change, be still magnesia material at breakdown point, after overload is eliminated, cable performance will not generate variation, may continue to normal use.
3. current-carrying capacity is big: the particularity of material and structure due to cable insulation, by the use of mineral insulation 2, so that
This flexible fire-proof cable has biggish current-carrying capability, transmits the identical magnitude of current, if selecting mineral insulated cable than plastics
Class cable reduces 1 to 2 section grades or bigger.
4. operating temperature is high: since the melting temperature of insulating layer magnesia is much higher than the melting temperature of copper, thus bare cable
Highest normal working temperature can continue to run at 1083 DEG C of melting temperature close to copper material in short term up to 250 DEG C.
5. waterproof and anticorrosion is explosion-proof: since this flexible fire-proof cable makees outer protective sleeve, conductor, insulation and shield using seamless copper pipe
It is dense compaction body between set three, thus makes it not only there is the infringement for preventing water, moisture, oil and some chemical substances, and
Prolong with the flammable oil vapour of prevention, gas and flame Sou.
6. shielding properties is excellent: the flexible copper layer 5 and outer layer flexibility copper pipe 6 of this flexible fire-proof cable are optimal shieldings
Protective layer can not only prevent interference of the cable main body 7 to other cables, but also can prevent interference of the external electromagnetic field to itself.
7. capability of resistance to radiation is strong: since the composition material of cable main body 7 is inorganic matter, thus being subjected to all radiation
Afterwards, the electrical and mechanical performance of cable main body 7 will not generate any variation.
8. long service life: since cable main body 7 is all made of inorganic material, because without aging, service life
Most down to centuries more than.
9. Environmental Safety: 7 composition material of cable main body is inorganic matter, is free of any organic matter, even if thus cable place
In 1000 DEG C or more heating, a bit smog will not be generated, there are no halogen and poisonous gas.The series cable is can be really
Realize environmentally protective, the safety-type product without " secondary disaster ".
10 high mechanical strengths: 7 structure of cable main body is closely knit, sturdy and durable, can bear the extruding, shock, bending, pressure of external force
It is flat etc., at the 1/3 2/3 of the flattening of cable main body 7 to the original outside diameter of cable, it may continue to safe normal use
11. bending property: cable main body 7 is after sufficiently annealing, with the flexible that general plastic cable can not be compared, most
Small-bend radius is only 69 times of the outside diameter of cable, if need to repeat, be repeatedly bent, does not need to heat bending section with blowtorch
Point.
12 ground connection are good: for this flexible fire-proof cable, independent earth lead are not needed, because of this fire resistant flexible
The outer layer flexibility copper pipe 6 of cable has played the role of earth lead, and can provide fabulous low ground resistance, has with existing
Electric cable is compared, it can save a ground wire, can effectively save use cost when in high volume using.
Claims (4)
1. a kind of flexible fire-proof cable, it is characterised in that: it includes a cable main body, and cable main body is set by multilayered structure cladding
Meter, innermost layer are copper core layer, and the outside of copper core layer is mineral insulation, and the outside of mineral insulation is polyethylene clad,
The outside of polyethylene clad is flexible copper layer.
2. flexible fire-proof cable as described in claim 1, it is characterised in that: further, the cable main body is same
When occurring in the form of more in cable, the outside of copper core layer is mineral insulation, and the outside of mineral insulation is polyethylene cladding
Layer constitutes the base core of cable main body through the above structure, and more foundation cores are simultaneously in use, by coating one outside more foundation cores
Layer Halogen restrictive coating, the outside of the Halogen restrictive coating are outer layer flexibility copper pipe；In Halogen restrictive coating and Duo Gen cable main body
Between gap fill sludge.
3. flexible fire-proof cable as described in claim 1, it is characterised in that: the mineral insulation is mica tape.
4. flexible fire-proof cable according to claim 2, it is characterised in that: its production method is specific as follows:
Wire drawing: using the wire drawing machine of 13 moulds, under room temperature working environment, conductor surface temperature reaches 40 DEG C or so, from Φ
8.0mm is drawn to regulation string diameter, and is lubricated by water and wire drawing oil and is cooled down the mixed of the water and wire drawing oil
It closes liquid to be made by mixing with the ratio of 1:9, maximum annealing then is carried out to the conductor drawn again, 550 DEG C of annealing temperature, is moved back
After being preheated to annealing temperature value first when fiery, be quenched using water-cooling pattern, cooling time 2S；
Twisted wire: 54 disk disk winches are used, process, the conductor of adjacent level are twisted to opposite each layer of conductor at same direction；Often
Layer conductor carries out process by different pitches, and following table is arranged in pitch:
；
The 54 disk disk winches, whole point of 3 sections of designs；
Mica tape: using double end mica winding machine, and every layer of wrapped overlap rate is controlled in 10-20%；
Polyethylene clad squeezes out: using the extruder of 70 specification of Φ, changing 6 warm areas of equipment point, and sets equipped with ultraviolet irradiation
It is standby；When extrusion, extruder warm area is gradually risen by mixed material area to head extrusion area, and temperature range is uniformly distributed between 170~210 DEG C
Setting；Ultraviolet irradiation temperature is crosslinked operation at 350 DEG C, by ultraviolet irradiation completion, and the core wire squeezed out is in ultraviolet light spoke
It is different according to the difference of core wire specification according to the residence time in area, as follows referring in particular to the time:
Core after irradiation enters cooling pond and carries out cooling and shaping；
Stranding: 1.6 meters of cable-formers are used；Stranding is the process to insulation core wire, it is ensured that whole rounding, when stranding operation,
Process should be carried out with same direction and same pitch；
Sludge filling: using sludge filling machine, powder imposed grease in feeding port and a small amount of water is sufficiently mixed,
The mixed proportion of powder and grease and water is 10:3:1, and the core wire semi-finished product good to stranding carry out gap filling；
Twining package tape: twining package tape operation is synchronous with sludge filling step to be carried out, using glass fibre band, by filled sludge
It is coated on whole cable；
High temperature resistant restrictive coating: using 120 extruder of Φ, point 9 warm areas, respectively one area of machine barrel, 2nd area of machine barrel, machine barrel three
Area, 4th area of machine barrel, 5th area of machine barrel, 6th area of machine barrel, flange, one area of head, 2nd area of head, are again coupled to perseverance after connecting with upper curtate
Reservoir；Because of the particularity of material, it is to be ensured that the temperature of each position reaches in processing range value, the temperature range requirements
150-170 DEG C, constant temperature water tank temperature controls in the range of 60-70；
Flexible copper fireprotection layer is carried out chain armouring to the copper strips of specific thickness, is met the whole of product using chain armoring machine
Body pliability, pliability maximum can accomplish 8 times of diameter values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414518.2A CN110010273A (en) | 2019-05-18 | 2019-05-18 | Flexible fire-proof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414518.2A CN110010273A (en) | 2019-05-18 | 2019-05-18 | Flexible fire-proof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110010273A true CN110010273A (en) | 2019-07-12 |
Family
ID=67177323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910414518.2A Pending CN110010273A (en) | 2019-05-18 | 2019-05-18 | Flexible fire-proof cable |
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| Country | Link |
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| CN (1) | CN110010273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223758A (en) * | 2021-03-29 | 2021-08-06 | 浙江元通线缆制造有限公司 | Prefabricated branch cable and production process thereof |
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