CN110415866A - A kind of mica tape mineral insulated cable and its manufacturing process - Google Patents
A kind of mica tape mineral insulated cable and its manufacturing process Download PDFInfo
- Publication number
- CN110415866A CN110415866A CN201910775058.6A CN201910775058A CN110415866A CN 110415866 A CN110415866 A CN 110415866A CN 201910775058 A CN201910775058 A CN 201910775058A CN 110415866 A CN110415866 A CN 110415866A
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- conductor
- band
- alkali
- free glass
- glass fibre
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 83
- 239000011707 mineral Substances 0.000 title claims abstract description 82
- 239000010445 mica Substances 0.000 title claims abstract description 36
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000004020 conductor Substances 0.000 claims abstract description 102
- 239000003365 glass fiber Substances 0.000 claims abstract description 57
- 238000009413 insulation Methods 0.000 claims abstract description 52
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 40
- FKIQSOGFDBALHA-UHFFFAOYSA-L aluminum trimagnesium potassium dioxido(oxo)silane oxygen(2-) difluoride Chemical compound [O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[K+].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O FKIQSOGFDBALHA-UHFFFAOYSA-L 0.000 claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 claims abstract description 37
- 239000010949 copper Substances 0.000 claims abstract description 37
- 239000011241 protective layer Substances 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 235000010755 mineral Nutrition 0.000 claims description 73
- 239000010410 layer Substances 0.000 claims description 37
- 238000012856 packing Methods 0.000 claims description 30
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 238000000137 annealing Methods 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 241001124569 Lycaenidae Species 0.000 claims 1
- 235000014987 copper Nutrition 0.000 claims 1
- 238000000338 in vitro Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000784726 Lycaena thetis Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
-
- 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
- H01B7/0045—Cable-harnesses
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0291—Disposition of insulation comprising two or more layers of insulation having different electrical properties
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of mica tape mineral insulated cable and its manufacturing process; including single or multi-core conductor; mineral insulation, insulating protective layer, restrictive coating are successively coated with outside the conductor; the mineral insulation is the two-sided synthetic fluorophlogopite band of multilayer, and two-sided synthetic fluorophlogopite band described in multilayer is along conductor extending direction on the outside of the conductor；The mineral insulation protective layer is multilayer alkali-free glass fibre band, and alkali-free glass fibre band described in multilayer is along conductor extending direction on the outside of the mineral insulation；The restrictive coating is ripple copper strips, and the ripple copper strips is welded on the outside of the mineral insulation protective layer along conductor extending direction longitudinal wrap.When the present invention meets fire-resistance property and the burning of mineral insulated cable the advantages of cable body not heat release, and efficiently solve that existing mineral insulated cable product manufacturing length is short, the defect of the big inconvenient mounting and installation of product hardness.
Description
Technical field
The present invention relates to technical field of cable, and in particular to mica tape mineral insulated cable and its manufacture work
Skill.
Background technique
With the rapid development of our country's economy, the requirement to the performances such as the fire resisting of cable, fire-retardant is continuously improved, especially to super
The densely populated places structural fire protection such as skyscraper, public place of entertainment requires constantly to be promoted.
It can satisfy noninflammability on the market (by national standard GB 31247-2014 " cable and optical cable classification system for fire performance " at present
Meeting A grades) cable only uses the BTTZ cable of copper core magnesium oxide mineral insulation copper pipe jacket structure, and execution standard is GB/T
13033-2007 " voltage rating 750V and following mineral insulated cable and terminal ", structure is using electrician's red copper bar as line
Core uses inorganic mineral magnesia powder to form as mineral insulating material processing and fabricating using seamless copper pipe as sheath.Such production
Product manufacturing process also limits the factory length of cable, and connector is caused to increase, and the water-proofing treatment of connector is also highly difficult, often because of connector
Place's water inlet, causes insulation resistance unqualified.There are also cable bend performance is poor, be unable to sabot, can only lopping transport, constructional difficulties etc.
It is universal on a large scale that problem allows this product to be difficult to.
The raising with associated materials and technological equipment level domestic in recent years, on the basis of former mineral insulated cable,
There is the mineral insulated cable of RTTZ model, execution standard is GB/T 34926-2017 " voltage rating 0.6/1kV and following
Mica tape mineral insulation ripple copper sheath cable and terminal ", this fireproof cable uses copper conductor, and mineral insulation is using synthesis cloud
Master tape+Ceramic silicon rubber composite band or fiberglass cloth tape, outer protective sleeve add low smoke and zero halogen ring protection using wrinkle copper sheath
Layer material plays final protective effect, and this cable solves the limitation of magnesium oxide mineral insulation drum length of cable and increases
The flexibility of cable, mounting and installation are more convenient.
The insulation of RTTZ mica tape mineral insulation ripple copper sheath fireproof cable product uses synthetic mica tape insulation+ceramics
SiClx rubber composite belt or fiberglass cloth tape are to guarantee that insulation resistance meets GB/T34926-2017 " voltage rating 0.6/
1kV and following mica tape mineral insulation ripple copper sheath cable and terminal " it requires to be not less than 100M Ω km.Individually use mica
Band is as insulation or the in general finished product megger test of other wrapped non-ignitable bands in 40M Ω km~70M Ω km
Left and right.Mica tape mineral insulation is plus the wrapped rear mineral insulation of suitable thickness Ceramic silicon rubber composite band or fiberglass cloth tape
Resistance can be not less than 100M Ω km.But in the A grade for carrying out GB 31247-2014 " cable and optical cable classification system for fire performance "
Ceramic silicon rubber composite band and glass fibre cloth bag burning gross calorific value PCS can be more than 2MJ/kg, Bu Nengman when noninflammability detects
Sufficient A grades of non-ignitable performance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of mica tape mineral insulated cable and its manufacturing process, it
When meeting fire-resistance property and the burning of mineral insulated cable the advantages of cable body not heat release, and efficiently solve existing mineral
Insulated cable product manufacturing length is short, the defect of the big inconvenient mounting and installation of product hardness.
In order to solve the above-mentioned technical problems, the present invention provides a kind of mica tape mineral insulated cables, including single
Or multi-core conductor, the conductor are successively coated with mineral insulation, insulating protective layer, restrictive coating outside, the mineral insulation is
The two-sided synthetic fluorophlogopite band of multilayer, two-sided synthetic fluorophlogopite band described in multilayer is along conductor extending direction around the conductor
Outside；The insulating protective layer is multilayer alkali-free glass fibre band, and alkali-free glass fibre band described in multilayer is along conductor extending direction
On the outside of the mineral insulation；The restrictive coating is ripple copper strips, and the ripple copper strips is along conductor extending direction longitudinal wrap
It is welded on the outside of the insulating protective layer.
It further comprise that gasket for packing is also filled between the multi-core conductor in a preferred embodiment of the present invention, it is described
Gasket for packing is alkali-free glass fibre gasket for packing, and the alkali-free glass fibre gasket for packing is made of more alkali-free glass fibre lines, institute
Alkali-free glass fibre gasket for packing is stated for filling up the gap between the more conductors, band is also wrapped on outside the multi-core conductor
Layer, the belting layer by the gasket for packing it is wrapped with mineral insulation, the insulating protective layer outside multi-core conductor, conductor together with,
The belting layer is multilayer alkali-free glass fibre band, restrictive coating described in the belting layer outer cladding.
In a preferred embodiment of the present invention, further comprise the conductor be more annealing copper conductors, moved back described in more
Fiery copper conductor twists together.
In a preferred embodiment of the present invention, further comprise the two-sided synthetic fluorophlogopite band with a thickness of
0.14mm；The alkali-free glass fibre band with a thickness of 0.20mm.
In order to solve the above-mentioned technical problem, the present invention also provides a kind of manufacture works of mica tape mineral insulated cable
Skill includes the following steps:
S1, conductor is formed by more copper conductors are twisted；
S2, the wrapped two-sided synthetic fluorophlogopite band of multilayer on the outside of conductor, two-sided synthetic fluorophlogopite band edge described in multilayer
Conductor extending direction is synchronous on the outside of the conductor, forms mineral insulation；
S3, it is surrounded with multilayer alkali-free glass fibre band on the outside of the two-sided synthetic fluorophlogopite band of multilayer, forms insulation protection
Layer, the two-sided synthetic fluorophlogopite band of multilayer and multilayer alkali-free glass fibre band synchronize be coated on conductor outside；
S4, S1~S3 is subjected to drying and processing by the cable core that conductor, mineral insulation and insulating protective layer are formed, removes cloud
Moisture in master tape；
S5, by ripple copper strips argon arc welding on the outside of core, formed restrictive coating.
It further comprise after S3, when mica tape mineral insulated cable packet in a preferred embodiment of the present invention
When including multi-core conductor, gasket for packing is also filled between multi-core conductor, the gap for filling up between the more conductors, and
It is also wrapped on belting layer outside multi-core conductor, the belting layer is by the mineral insulation outside the gasket for packing and multi-core conductor, conductor
Layer, insulating protective layer are handled multicore core using S4, S5 around multicore core is formed together.
It further comprise before step S1, more copper conductors are made annealing treatment in a preferred embodiment of the present invention.
It further comprise the two-sided synthetic fluorophlogopite band in step S2 and S3 in a preferred embodiment of the present invention
With a thickness of 0.14mm, the alkali-free glass fibre band with a thickness of 2.0mm, the two-sided synthetic fluorophlogopite band of multilayer and alkali-free glass
The overlapping of glass fiber band is wrapped, and average Duplication is 25~35%.
In a preferred embodiment of the present invention, further comprise be arranged in step S4 drying temperature be 80 DEG C, setting dry
The dry time is 8~10 hours.
It further comprise in step 5, after being needed before being welded to being dried in S4 in a preferred embodiment of the present invention
Core carry out baking processing, the flash of alkali-free glass fibre band burning is melted, ripple copper strips is more advantageous to and carries out argon arc welding.
Beneficial effects of the present invention:
The present invention provides a kind of mica tape mineral insulated cables, including single or multi-core conductor, outside conductor according to
It is secondary to be surrounded with two-sided synthetic fluorophlogopite band, alkali-free glass fibre band and realize in outermost layer welding ripple copper strips to conductor
Outer protection, by such structure can satisfy cable bending property, flatten performance requirement；The present invention also provides one kind
The manufacturing process of mica tape mineral insulated cable passes through the two-sided synthetic fluorophlogopite band of multilayer and multilayer alkali-free glass fibre
Band synchronizes the manufacturing process such as wrapped, drying, argon arc welding and completes manufacturing process cooperation corresponding with structure design.
By structure design and the cooperation of corresponding manufacturing process, using the mineral mica tape of two-sided synthetic fluorophlogopite band,
Meet the non-combustibility test of cable and the requirement of insulation resistance index.GB31247-2014 " cable and optical cable are carried out in product
Classification system for fire performance " A grade non-combustibility test when representative value are as follows: mica tape calorific value 1.5MJ/kg, glass fibre fill calorific value
0.1MJ/kg, alkali-free glass fibre twining package tape calorific value 0.3MJ/kg, the synthesis calorific value 0.8MJ/kg of whole stranding meet A grades not
Fire combustion heat value≤2MJ/kg requirement of cable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of mica tape mineral insulated cable of the invention；
Fig. 2 is the structural schematic diagram of another embodiment of mica tape mineral insulated cable of the invention；
Fig. 3 is the flow chart of the manufacturing process of mica tape mineral insulated cable of the invention.
Figure label explanation: 1, conductor；2, mineral insulation；3, insulating protective layer；4, gasket for packing；5, belting layer；6, it protects
Jacket layer.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Shown in referring to Fig.1, an embodiment of mica tape mineral insulated cable of the invention, including single conductor 1, institute
It states and is successively coated with mineral insulation 2, insulating protective layer 3, restrictive coating 6 outside conductor 1, the mineral insulation 2 is that multilayer is two-sided
Synthetic fluorophlogopite band, two-sided synthetic fluorophlogopite band described in multilayer is along 1 extending direction of conductor around 1 outside of conductor；
The insulating protective layer 3 is multilayer alkali-free glass fibre band, and alkali-free glass fibre band described in multilayer is wrapped along 1 extending direction of conductor
In 2 outside of insulating layer；The restrictive coating 6 is ripple copper strips, and the ripple copper strips is welded on along 1 extending direction longitudinal wrap of conductor
The outside of the mineral insulation protective layer 3.
Referring to shown in Fig. 2, another embodiment of mica tape mineral insulated cable of the invention, the multi-core conductor 1
In each conductor 1 outside be successively coated with mineral insulation 2, insulating protective layer 3, the mineral insulation 2 is that multilayer is two-sided
Synthetic fluorophlogopite band, two-sided synthetic fluorophlogopite band described in multilayer is along 1 extending direction of conductor around 1 outside of conductor；
The insulating protective layer 3 is multilayer alkali-free glass fibre band, and alkali-free glass fibre band described in multilayer is wrapped along 1 extending direction of conductor
In 2 outside of mineral insulation, it is also filled with gasket for packing 4 between the multi-core conductor 1, the gasket for packing 4 is alkali-free glass
Fiber gasket for packing, the alkali-free glass fibre gasket for packing are made of more alkali-free glass fibre lines, and the alkali-free glass fibre is filled out
The gap restricted for filling up between the more conductors 1 is filled, is also wrapped on belting layer 5, the belting layer outside the multi-core conductor 1
5 by the gasket for packing 4 it is wrapped with mineral insulation 2, the insulating protective layer 3 outside multi-core conductor 1, conductor 1 together with, the band
Layer 5 is multilayer alkali-free glass fibre band, and restrictive coating 6 described in 5 outer cladding of belting layer, the restrictive coating 6 is ripple copper strips, institute
State the outside that ripple copper strips is welded on the belting layer 5 along conductor extending direction longitudinal wrap.
In above-mentioned two embodiment, the conductor 1 is more annealing copper conductors, and the more annealed copper wire strandings are one
It rises, the copper conductor by annealing can be improved the elongation percentage of copper conductor, reduce D.C. resistance.
The two-sided synthetic fluorophlogopite band proof voltage 1kV can continue 90min and not hit at 1000 DEG C ± 50 DEG C of high temperature
It wears, and its combustion heat value is 1.5MJ/kg, meets combustion heat value≤2MJ/kg requirement of A grades of non-ignitable cables.It is above-mentioned two
Two-sided synthetic fluorophlogopite band in embodiment with a thickness of 0.14mm, need can be used according to actual in other embodiments
It asks, chooses the two-sided synthetic fluorophlogopite band of different-thickness.
The alkali-free glass fibre band has 1000 DEG C of high temperature resistant or more also not combustion-supporting performances of not burning, and it is fired
Heating value is 0.3MJ/kg, equally also meets combustion heat value≤2MJ/kg requirement of A grades of non-ignitable cables, the insulating protective layer
Alkali-free glass fibre band in 3 with a thickness of 0.20mm；Alkali-free glass fibre band in the belting layer 5 with a thickness of
0.17mm。
The alkali-free glass fibre gasket for packing, the gap for filling up between multi-core conductor 1 make cable beauty rounding, and
Alkali-free glass fibre gasket for packing does not burn not combustion-supporting yet, and high temperature resistant requires 1000 DEG C or more, the alkali-free glass fibre gasket for packing
Combustion heat value be 0.1MJ/kg, equally also meet combustion heat value≤2MJ/kg requirement of A grades of non-ignitable cables.
Synthesis after above-mentioned two-sided synthetic fluorophlogopite band, alkali-free glass fibre band, alkali-free glass fibre gasket for packing stranding
Combustion heat value is 0.8MJ/kg, meets combustion heat value≤2MJ/kg requirement of A grades of non-ignitable cables.
Referring to shown in Fig. 3, a kind of manufacturing process of mica tape mineral insulated cable includes the following steps:
S1, conductor 1 is formed by more copper conductors are twisted；
S2, in the wrapped two-sided synthetic fluorophlogopite band of multilayer in the outside of conductor 1, two-sided synthetic fluorophlogopite band edge described in multilayer
1 extending direction of conductor is synchronous around 1 outside of conductor, forms mineral insulation 2；
S3, it is surrounded with multilayer alkali-free glass fibre band on the outside of the two-sided synthetic fluorophlogopite band of multilayer, forms insulation protection
Layer 3, the two-sided synthetic fluorophlogopite band of multilayer and multilayer alkali-free glass fibre band synchronize be coated on the outside of conductor 1；
S4, S1~S3 is subjected to drying and processing by the cable core that conductor 1, mineral insulation 2 and insulating protective layer 3 are formed, removed
Remove the moisture in mica tape；
S5, by ripple copper strips argon arc welding on the outside of core, formed restrictive coating 6.
Specifically, after step S3 processing, when mica tape mineral insulated cable includes multi-core conductor 1, more
Gasket for packing 4 is also filled between core conductor 1, multiple gasket for packings 4 are compacted, the sky for filling up between the more conductors 1
Gap, and belting layer 5 is also wrapped on outside multi-core conductor 1, the belting layer 5 is by the gasket for packing 4 and multi-core conductor 1, conductor 1
Outer mineral insulation 2, insulating protective layer 3 are handled multicore core using S4, S5 around multicore core is formed together.
The gasket for packing 4 and belting layer 5 are added, ensure that the rounding property for the cable core that multi-core conductor 1 is formed, also, in wrapped process
In, wrapped Duplication >=25% of the belting layer 5 guarantees that any position does not have bottom pour ladle and bale breaking phenomenon.
Specifically, before step S1, more copper conductors are made annealing treatment.
Specifically, in step S2 and S3, including 6 layers of two-sided synthetic fluorophlogopite band and 2 layers of alkali-free glass fibre band, wherein
Under same equipment, disposable completion overlapping is wrapped, average for 6 layers of two-sided synthetic fluorophlogopite band and 2 layers of alkali-free glass fibre band
Duplication is 25~35%, synchronizes wrapped mineral insulation 2 and insulating protective layer 3 makes to coat between it even closer, be not present
Gap.
Specifically, in step S4, the temperature that drying is arranged is 80 DEG C, and the time that drying is arranged is 8~10 hours, has been guaranteed
The moisture in two-sided synthetic fluorophlogopite band is removed entirely, furthermore, it is desirable to guarantee to complete restrictive coating 6 in one hour after the drying
Welding, prevents two-sided synthetic fluorophlogopite band from making moist again.
Specifically, it in step 5, needs to carry out baking processing to the core after drying in S4 before being welded, by alkali-free
The flash burning of glass fibre band is melted, and is more advantageous to ripple copper strips and is carried out argon arc welding.
Because restrictive coating 6 needs to have earth conductor 1 and protective case function, is welded, using ripple copper strips
Guarantee ripple copper strips in embossing, embossing depth and pitch should be uniform；Solder skip, firm welding be reliable when guaranteeing welding, weld seam
It is smooth, it should be ensured that product does not crack under the conditions of the bending radius of permission, should not occur obvious oxidative phenomena after the completion of welding.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of mica tape mineral insulated cable, which is characterized in that including single or multi-core conductor, outside the conductor successively
It is coated with mineral insulation, insulating protective layer, restrictive coating, the mineral insulation is the two-sided synthetic fluorophlogopite band of multilayer, more
The layer two-sided synthetic fluorophlogopite band is along conductor extending direction on the outside of the conductor；The insulating protective layer is multilayer
Alkali-free glass fibre band, alkali-free glass fibre band described in multilayer is along conductor extending direction on the outside of the mineral insulation；
The restrictive coating is ripple copper strips, and the ripple copper strips is welded on the mineral insulation protective layer along conductor extending direction longitudinal wrap
Outside.
2. mica tape mineral insulated cable as described in claim 1, which is characterized in that also filled out between the multi-core conductor
Filled with gasket for packing, the gasket for packing is alkali-free glass fibre gasket for packing, and the alkali-free glass fibre gasket for packing is by more alkali-free glass
Glass fiber line composition, the alkali-free glass fibre gasket for packing for filling up the gap between the more conductors, lead by the multicore
It is also wrapped on belting layer in vitro, the belting layer is exhausted by mineral insulation, the mineral outside the gasket for packing and multi-core conductor, conductor
Edge protective layer is wrapped together, and the belting layer is multilayer alkali-free glass fibre band, restrictive coating described in the belting layer outer cladding.
3. mica tape mineral insulated cable as described in claim 1, which is characterized in that the conductor is more annealed coppers
Conducting wire, the more annealed copper wire strandings are together.
4. mica tape mineral insulated cable as claimed in claim 2, which is characterized in that the two-sided synthetic fluorophlogopite
Band with a thickness of 0.14mm；Alkali-free glass fibre band in the mineral insulation protective layer with a thickness of 0.20mm；The band
Layer in alkali-free glass fibre band with a thickness of 0.17mm.
5. a kind of manufacturing process of mica tape mineral insulated cable, which comprises the steps of:
S1, conductor is formed by more copper conductors are twisted；
S2, the wrapped two-sided synthetic fluorophlogopite band of multilayer on the outside of conductor, two-sided synthetic fluorophlogopite band described in multilayer is along conductor
Extending direction is synchronous on the outside of the conductor, forms mineral insulation；
S3, it is surrounded with multilayer alkali-free glass fibre band on the outside of the two-sided synthetic fluorophlogopite band of multilayer, forms mineral insulation protection
Layer, the two-sided synthetic fluorophlogopite band of multilayer and multilayer alkali-free glass fibre band synchronize be coated on conductor outside；
S4, S1~S3 is subjected to drying and processing by the cable core that conductor, mineral insulation and mineral insulation protective layer are formed, removes cloud
Moisture in master tape and alkali-free glass fibre band；
S5, by ripple copper strips argon arc welding on the outside of core, formed restrictive coating.
6. the manufacturing process of mica tape mineral insulated cable as claimed in claim 5, which is characterized in that after S3,
When mica tape mineral insulated cable includes multi-core conductor, gasket for packing is also filled between multi-core conductor, for filling up
Gap between the more conductors, and belting layer is also wrapped on outside multi-core conductor, the belting layer is by the gasket for packing
With outside multi-core conductor, conductor mineral insulation, mineral insulation protective layer around multicore core is formed together, by multicore core
It is handled using S4, S5.
7. the manufacturing process of mica tape mineral insulated cable as claimed in claim 5, which is characterized in that in step S1
Before, more copper conductors are made annealing treatment.
8. the manufacturing process of mica tape mineral insulated cable as claimed in claim 5, which is characterized in that step S2 and S3
In, the two-sided synthetic fluorophlogopite band with a thickness of 0.14mm, the alkali-free glass fibre band with a thickness of 2.0mm, multilayer
Two-sided synthetic fluorophlogopite band and the overlapping of alkali-free glass fibre band are wrapped, and average Duplication is 25~35%.
9. the manufacturing process of mica tape mineral insulated cable as claimed in claim 5, which is characterized in that in step S4,
The temperature that drying is arranged is 80 DEG C, and the time that drying is arranged is 8~10 hours.
10. the manufacturing process of mica tape mineral insulated cable as claimed in claim 5, which is characterized in that in step 5,
It needs to carry out baking processing to the core after drying in S4 before being welded, the flash burning of alkali-free glass fibre band is melted,
It is more advantageous to ripple copper strips and carries out argon arc welding.
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| CN201910775058.6A CN110415866A (en) | 2019-08-21 | 2019-08-21 | A kind of mica tape mineral insulated cable and its manufacturing process |
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