CN106448905B - A kind of fire-resisting cable for power Transmission - Google Patents
A kind of fire-resisting cable for power Transmission Download PDFInfo
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- CN106448905B CN106448905B CN201610992861.1A CN201610992861A CN106448905B CN 106448905 B CN106448905 B CN 106448905B CN 201610992861 A CN201610992861 A CN 201610992861A CN 106448905 B CN106448905 B CN 106448905B
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- fiber cloth
- basalt fiber
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- interior
- mould tube
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 189
- 239000004744 fabric Substances 0.000 claims abstract description 188
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000000843 powder Substances 0.000 claims abstract description 112
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910052802 copper Inorganic materials 0.000 claims abstract description 96
- 239000010949 copper Substances 0.000 claims abstract description 96
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 64
- 238000011049 filling Methods 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims description 83
- 229920002545 silicone oil Polymers 0.000 claims description 30
- 239000000919 ceramic Substances 0.000 claims description 28
- 229920002379 silicone rubber Polymers 0.000 claims description 27
- 239000002131 composite material Substances 0.000 claims description 25
- 230000004888 barrier function Effects 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 16
- 238000009940 knitting Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 239000011435 rock Substances 0.000 claims description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000005304 joining Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 26
- 239000011707 mineral Substances 0.000 abstract description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 25
- 238000005516 engineering process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000013011 mating Effects 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 20
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 10
- 238000005056 compaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010445 mica Substances 0.000 description 5
- 229910052618 mica group Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910003978 SiClx Inorganic materials 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 230000009970 fire resistant effect Effects 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 241000206672 Gelidium Species 0.000 description 2
- 229910000629 Rh alloy Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 108010059642 isinglass Proteins 0.000 description 2
- 229910052627 muscovite Inorganic materials 0.000 description 2
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two 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
- H01B7/17—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
-
- 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
Abstract
The invention discloses a kind of fire-resisting cable for power Transmission, make full use of the hot-face insulation principle of mineral insulated cable, on the premise of the hot-face insulation principle is not changed, change the copper pipe sheath in mineral insulated cable into fusing point higher, the higher basalt fibre material wrappage of electrical insulating property, so that the fire-resisting cable that the application is provided has higher fire resistance and high-temperature insulating quality under combustion high temperature, and outer basalt fiber cloth set soft texture, it can turn up, before filling magnesia powder is started, turn up the free end on length direction that first outer basalt fiber cloth is covered, interior outside is exchanged, mating mold pipe, built in mould tube length very little wait smash pressure space, so smash pressure pipe or it is similar smash pressure device and can successfully pass in and out carry out smashing pressure in the mould tube, smash after the completion of pressing without drawing again or rolling, it is time saving and energy saving, simplify production technology, save great amount of cost, in theory fire-resisting cable to produce length unrestricted.
Description
Technical field
The present invention relates to power cable technical field, more particularly, to a kind of fire-resisting cable for power Transmission.
Background technology
It is more and more harsh to the fire resistant requirements of the cable for power Transmission with economic development and scientific and technological progress.At present
Fire-resisting cable mainly have three kinds of forms：Earliest Mica tape fire-resisting cable, the mineral insulated cable occurred later and
Recently the Ceramic silicon rubber fire-resisting cable occurred.
Mica tape fire-resisting cable：Flame retardant coating is generally formed using the higher fire-resistant isinglass belt of price is wrapped, wrapped speed
Degree is slow, it is wrapped during mica powder easily come off, influence fire resisting effect；Defocused fire-resistant isinglass belt embrittlement is burnt, shake is run into
It is dynamic and when spraying it is easy to fall off, fire resisting effect is poor, it is difficult to ensure that power circuit remain in the case of fire it is safe and smooth.
Mineral insulated cable：Mineral insulated cable abbreviation MI cables, conductor, inorganic matter oxidation are made using the copper of high conductivity
Magnesium is insulated, and seamless copper pipe makees sheath, if necessary, and one layer of plastics outer jacket is extruded outside annealing copper sheath, particular/special requirement without
Cigarette Halogen occasion can add one layer of low smoke and zero halogen sheath outside；Due to its unique structure and the inorganic insulation sheet of use material
Property so that mineral insulated cable has fire prevention, grease proofing, explosion-proof, waterproof, smokeless, Halogen, nontoxic, high temperature resistant, corrosion-resistant, resistance to spoke
Penetrate, anti-electromagnetic interference, current-carrying capacity is big, overload capacity is strong, high mechanical strength, small volume, lightweight, long lifespan, ground connection performance it is good,
It is easy for installation, the low characteristic better than other kind cables of integrated cost；Mineral insulated cable is current safest cable.Ore deposit
Although the structure of thing insulated cable is only simple three layers, all simple more than other fire-resisting cables, manufacture craft is very multiple
Miscellaneous, manufacture difficulty is very high, it is necessary to which special production equipment and production line, early stage equipment investment are larger, and yield rate and yield are equal
It is relatively low, although including relatively low installed in interior integrated cost, but its production cost is more much higher than other fire-resisting cables；It is
A kind of fire-resisting cable of gentrification, the daily household common people do not afford to do.
Ceramic silicon rubber fire-resisting cable：It is to solve present in Mica tape fire-resisting cable and mineral insulated cable
The problem of a kind of novel flame resistant cable for developing recently, its flame retardant coating is made using Ceramic silicon rubber, and it processes work
Skill is：Plus sulphur → extrusion → vulcanization, the special silicone rubber wire cable extruding machine completion of extrusion needs, vulcanization is also required to special
The vulcanizing equipment of door, such as：Hot-air cure stove, microwave vulcanization drying tunnel etc., flame retardant coating processing technology are complicated, low production efficiency.Enter
The improvement of one step, is first combined into Ceramic silicon rubber composite band, then as mica tape by Ceramic silicon rubber and glass fabric
It is wrapped like that refractory insulating layer is constituted on conductor, to improve production efficiency etc..
Three kinds of preparation methods of existing mineral insulated cable, are first with copper conductor cooperation one very short but thicker entirely
A cable intermediate products are made in a piece equally very short but thicker copper pipe, then mechanical pull or continuous rolling again, roll thin change
It is long, the mineral insulated cable of target external diameter size and length is just obtained, for example：In magnesia powder automatic filling method, most start
Copper pipe there was only 9 meters, assemble rear drawing, it is most long also with regard to 700 meters can be reached；So production the reason for be：If a copper pipe
With the length isometric with target cable, such as hundreds of meters or a few kms, no matter how high its hardness is, it naturally will
Generation amount of deflection flexural deformation, is now impossible the copper conductor with target external diameter to be remained concentric state insertion
The copper pipe, powder filling below compacting is even more to realize under the length of hundreds of meters or a few kms, smashes pressure device basic with regard to nothing
Method is smoothly moved between copper pipe and copper conductor, and running into amount of deflection bending will be stuck；Such production method, has led to mineral
The length of insulated cable will not be very long, and manufacture craft is very complicated, and manufacture difficulty is very high, and cost is higher, yield rate and yield compared with
It is low.
Therefore, how a kind of high-temperature insulating quality and fire resistance mineral insulated cable shoulder to shoulder to be provided, but production length it is longer,
Production technology is more simplified, cost is lower and the higher fire-resisting cable of production capacity is that the technology of those skilled in the art's urgent need to resolve is asked
Topic.
The content of the invention
It is an object of the invention to provide a kind of fire-resisting cable for power Transmission, the high-temperature insulating quality of the fire-resisting cable
With fire resistance mineral insulated cable shoulder to shoulder, but its production length is longer, production technology is more simplified, cost is lower and production capacity more
It is high.
To solve above-mentioned technical problem, the technical scheme that the present invention is provided is：
A kind of fire-resisting cable for power Transmission, including wrap up successively from inside to outside copper conductor, refractory insulating layer, absolutely
Edge layer, water blocking layer and restrictive coating；
The refractory insulating layer includes two ends and a position for being located at the copper conductor length direction two ends respectively
Pars intermedia between two ends；
The end of the refractory insulating layer be Ceramic silicon rubber composite band, the Ceramic silicon rubber composite band it is wrapped
On the two ends of the copper conductor；
The pars intermedia of the refractory insulating layer includes interior basalt fiber cloth set, outer basalt fiber cloth set, magnesia powder
And silicone oil；
The interior basalt fiber cloth set and outer basalt fiber cloth set are sequentially sleeved at the copper conductor from inside to outside
On, and the internal diameter of the outer basalt fiber cloth set is more than the external diameter that the interior basalt fiber cloth covers, with the interior Black Warrior
A cavity for being used to store magnesia powder and silicone oil, and institute are formed between rock fiber cloth set and outer basalt fiber cloth set
The size for stating the knitting eyelet of outer basalt fiber cloth set and interior basalt fiber cloth set is less than the particle diameter of the magnesia powder
Size, to prevent powder from being spilt from the knitting eyelet of the outer basalt fiber cloth set and interior basalt fiber cloth set；
It is compacted after the magnesia powder and silicone oil are well mixed fine in outer the basalt fiber cloth set and interior basalt
In cavity between Wei Bu sets；
The two ends that the Ceramic silicon rubber composite band covers the outer basalt fiber cloth set with interior basalt fiber cloth
Winding compression is sealed between Ceramic silicon rubber composite band and copper conductor.
It is preferred that, the insulating barrier is crosslinked polyetylene insulated layer.
It is preferred that, the water blocking layer is for two-sided waterstop with overlapping around the wrapped outer surface structure in the insulating barrier of packet mode
Into.
It is preferred that, in addition to armor, the armor is located between the insulating barrier and the restrictive coating, the armouring
Layer is steel-tape armouring layer.
It is preferred that, the restrictive coating is low smoke, zero halogen polyolefin flame-retardant restrictive coating.
Compared with prior art, this application provides a kind of fire-resisting cable for power Transmission, including from inside to outside
Copper conductor, refractory insulating layer, insulating barrier, water blocking layer and restrictive coating；The refractory insulating layer includes two respectively positioned at described
Pars intermedia between the end at copper conductor length direction two ends and two ends；The end of the refractory insulating layer is pottery
Porcelain SiClx rubber composite belt, the Ceramic silicon rubber composite band is wrapped on the two ends of the copper conductor；The hot-face insulation
The pars intermedia of layer includes interior basalt fiber cloth set, outer basalt fiber cloth set, magnesia powder and silicone oil；The magnesia powder
And silicone oil it is well mixed after be compacted closed cavity between the outer basalt fiber cloth set and interior basalt fiber cloth cover
In；
With 10MPa~20MPa pressure compaction in the outer basalt after the magnesia powder and silicone oil are well mixed
Fiber cloth is covered in the closed cavity between interior basalt fiber cloth set；
Outer basalt fiber cloth set and interior basalt fiber cloth set are due to being basalt fibre material, the machine such as its tensile strength
Tool mechanical property very well, will not burst outer basalt fiber cloth set under above-mentioned 10MPa~20MPa compaction pressure, it is ensured that
Magnesium oxide powder in cavity is in compacted state all the time before baked wheaten cake so that cable has preferable insulating properties, Bu Huiyin
It is conductive to be hole between powder, and due to being basalt fibre material, its fusing point is very high and high-temperature behavior very well,
Broken or burning will not be burnt under fire burning to leak, it is ensured that the magnesium oxide powder in cavity is in consolidation shape all the time during baked wheaten cake
State, and the particle diameter of control magnesium oxide powder is more than the knitting eyelet that outer basalt fiber cloth covers so that powder is unlikely to from outer profound
Spilt in the knitting eyelet of military rock fiber cloth set；
Silicone oil is used as a kind of addition anti-blushing agent, it is ensured that above-mentioned magnesia powder in process, in installation process with
And will not absorb water and make moist during the use in later stage, it is to avoid electrical insulating property declines after the powder moisture absorption of compacting；
Because the fusing point of magnesia powder is very high (2852 DEG C), and basalt fibre fusing point it is also very high (be basalt building stones
After 1450 DEG C~1500 DEG C melt, by the continuous fiber of platinum-rhodium alloy bushing high speed pulling), and magnesia powder
And the electrical insulating property of basalt fibre in itself is very high so that covered in the application by outer basalt fiber cloth and interior basalt is fine
The refractory insulating layer of Wei Bu set parcel magnesia powders has higher fire resistance and high-temperature insulating quality under combustion high temperature,
The normal transmission of copper conductor so as to for longer periods protect inner side is used.
To sum up, this application provides a kind of fire-resisting cable for power Transmission, the resistance to of mineral insulated cable is made full use of
Fire insulation principle, on the premise of the hot-face insulation principle is not changed, changes the copper pipe sheath in mineral insulated cable into fusing point
The higher basalt fibre material wrappage of higher, electrical insulating property so that the fire-resisting cable that the application is provided is under combustion high temperature
With higher fire resistance and high-temperature insulating quality, and outer basalt fiber cloth covers soft texture, can turn up, filling in beginning
Before magnesia powder, the free end on length direction for first covering outer basalt fiber cloth is turned up, and interior outside is exchanged, and turns up straight always
The outer turn-line put to outer basalt fiber cloth is close to the upper edge of mould tube, and mating mold pipe is built in mould tube
The waiting of one length very little smashes pressure space, so smashes pressure pipe or similar smash pressure device and can successfully pass in and out in the mould tube
Pressure is smash in progress, thoroughly solves in the magnesia powder automatic filling method of above-mentioned mineral insulated cable the nothing due to amount of deflection flexural deformation
The problem of method is processed, because copper conductor now used is the copper conductor of target thickness, the external diameter of outer basalt fiber cloth set is
The external diameter of target refractory insulating layer, smashes after the completion of pressing without drawing again or rolling, time saving and energy saving, simplifies production technology, saves
Saved great amount of cost, in theory fire-resisting cable to produce length unrestricted.
Brief description of the drawings
Fig. 1 is the structural representation of fire-resisting cable provided in an embodiment of the present invention；
Fig. 2 is the principle schematic of the preparation method of fire-resisting cable provided in an embodiment of the present invention.
In figure：1 copper conductor, 2 refractory insulating layers, basalt fiber cloth set, 202 powder compacts, 203 outer basalt in 201
Fiber cloth set, 204 outer turn-lines, 3 insulating barriers, 4 water blocking layers, 5 restrictive coatings, 6 mould tubes.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " axial direction ", " radial direction ", " longitudinal direction ", " transverse direction ",
" length ", " width ", " on ", " under ", "front", "rear", "left", "right", " top ", " bottom ", " interior ", " outer ", " clockwise ", " inverse
The orientation or position relationship of the instructions such as hour hands " are, based on orientation shown in the drawings or position relationship, to be for only for ease of description originally
Invention and simplified description, rather than instruction or the signified device of hint or element must be with specific orientation, with specific square
Position construction and operation, therefore be not considered as limiting the invention.
Reference picture 1~Fig. 2, Fig. 1 are the structural representation of fire-resisting cable provided in an embodiment of the present invention；Fig. 2 is the present invention
The principle schematic of the preparation method for the fire-resisting cable that embodiment is provided.
This application provides a kind of fire-resisting cable for power Transmission, including wrap up successively from inside to outside copper conductor 1,
Refractory insulating layer 2, insulating barrier 3, water blocking layer 4 and restrictive coating 5；
The refractory insulating layer 2 includes two ends for being located at the length direction two ends of copper conductor 1 respectively and one
Pars intermedia between two ends；
The end of the refractory insulating layer 2 is Ceramic silicon rubber composite band, and the Ceramic silicon rubber composite band is wrapped
On the two ends of the copper conductor 1；
The pars intermedia of the refractory insulating layer 2 includes interior basalt fiber cloth set 201, outer basalt fiber cloth set 203, oxygen
Change magnesium powder and silicone oil；
The interior basalt fiber cloth set 201 and outer basalt fiber cloth set 203 are sequentially sleeved at described from inside to outside
On copper conductor 1, and the internal diameter of the outer basalt fiber cloth set 203 is more than the external diameter that the interior basalt fiber cloth covers 201, with
One is formed between the interior basalt fiber cloth set 201 and outer basalt fiber cloth set 203 is used to store magnesia powder
And the cavity of silicone oil, and the outer basalt fiber cloth set 203 and interior basalt fiber cloth cover the big of 201 knitting eyelet
It is less than the particle size of the magnesia powder, to prevent powder from the outer basalt fiber cloth set 203 and interior basalt
Spilt in the knitting eyelet of fiber cloth set 201；
It is compacted after the magnesia powder and silicone oil are well mixed in the outer basalt fiber cloth set 203 and interior basalt
In cavity between fiber cloth set 201；
The outer basalt fiber cloth set 203 is covered 201 by the Ceramic silicon rubber composite band with interior basalt fiber cloth
Two ends winding compression be sealed between Ceramic silicon rubber composite band and copper conductor 1.
In one embodiment of the invention, the insulating barrier 3 is crosslinked polyetylene insulated layer 3.
In one embodiment of the invention, the water blocking layer 4 is two-sided waterstop with overlapping wrapped in institute around packet mode
The outer surface for stating insulating barrier 3 is constituted.
In one embodiment of the invention, the fire-resisting cable that the application is provided also includes armor, the armor position
Between the insulating barrier 3 and the restrictive coating 5, the armor is steel-tape armouring layer.
In one embodiment of the invention, the restrictive coating 5 is low smoke, zero halogen polyolefin flame-retardant restrictive coating 5.
This application provides a kind of fire-resisting cable for power Transmission, including copper conductor 1, hot-face insulation from inside to outside
Layer 2, insulating barrier 3, water blocking layer 4 and restrictive coating 5；The refractory insulating layer 2 includes two and is located at the length of copper conductor 1 respectively
Pars intermedia between the end at direction two ends and two ends；The end of the refractory insulating layer 2 is ceramic SiClx rubber
Glue composite band, the Ceramic silicon rubber composite band is wrapped on the two ends of the copper conductor 1；In the refractory insulating layer 2
Between portion include interior basalt fiber cloth set 201, outer basalt fiber cloth set 203, magnesia powder and silicone oil；The magnesia powder
And silicone oil it is well mixed after be compacted envelope between the outer basalt fiber cloth set 203 and interior basalt fiber cloth set 201
Close in cavity；
With 10MPa~20MPa pressure compaction in the outer basalt after the magnesia powder and silicone oil are well mixed
In closed cavity between fiber cloth set 203 and interior basalt fiber cloth set 201；
Outer basalt fiber cloth set 203 and interior basalt fiber cloth set 201 are due to being basalt fibre material, and its tension is strong
Outer basalt fiber cloth very well, 203 will not be covered under above-mentioned 10MPa~20MPa compaction pressure by the mechanical mechanics properties such as degree
Burst, it is ensured that the magnesium oxide powder in cavity is in compacted state all the time before baked wheaten cake so that cable has preferable insulation
Property, will not be because of being hole between powder and conductive, and due to being basalt fibre material, its fusing point is very high and high temperatures
Can will not be burnt under fire burning broken or burn and leak very well, it is ensured that the magnesium oxide powder in cavity during baked wheaten cake all the time
Particle diameter in compacted state, and control magnesium oxide powder is more than the knitting eyelet that outer basalt fiber cloth covers 203 so that powder
It is unlikely to spill from the knitting eyelet of outer basalt fiber cloth set 203；
Silicone oil is used as a kind of addition anti-blushing agent, it is ensured that above-mentioned magnesia powder in process, in installation process with
And will not absorb water and make moist during the use in later stage, it is to avoid electrical insulating property declines after the powder moisture absorption of compacting；
Because the fusing point of magnesia powder is very high (2852 DEG C), and basalt fibre fusing point it is also very high (be basalt building stones
After 1450 DEG C~1500 DEG C melt, by the continuous fiber of platinum-rhodium alloy bushing high speed pulling), and magnesia powder
And the electrical insulating property of basalt fibre in itself is very high so that by outer basalt fiber cloth set 203 and the interior Black Warrior in the application
The refractory insulating layer 2 that rock fiber cloth set 201 wraps up magnesia powder has higher fire resistance and height under combustion high temperature
Warm insulating properties, so as to for longer periods protect the normal transmission of copper conductor 1 of inner side to use.
To sum up, this application provides a kind of fire-resisting cable for power Transmission, the resistance to of mineral insulated cable is made full use of
Fire insulation principle, on the premise of the hot-face insulation principle is not changed, changes the copper pipe sheath in mineral insulated cable into fusing point
The higher basalt fibre material wrappage of higher, electrical insulating property so that the fire-resisting cable that the application is provided is under combustion high temperature
With higher fire resistance and high-temperature insulating quality, and outer basalt fiber cloth covers 203 soft textures, can turn up, and is starting
Before filling magnesia powder, the free end first covered outer basalt fiber cloth on 203 length direction is turned up, and interior outside is exchanged, and one
It is straight to turn up until outer basalt fiber cloth covers outer turn-line 204 on 203 close to the upper edge of mould tube 6, mating mold pipe 6,
Built in mould tube 6 length very little wait smash pressure space, so smash pressure pipe or similar pressure device of smashing can be suitable
Pass in and out sharply and carry out smashing pressure in the mould tube 6, in the magnesia powder automatic filling method for thoroughly solving above-mentioned mineral insulated cable
The problem of can not being processed due to amount of deflection flexural deformation, because copper conductor 1 now used is the copper conductor 1 of target thickness, outside
The external diameter of basalt fiber cloth set 203 is the external diameter of target refractory insulating layer 2, is smash after the completion of pressing without drawing again or rolling,
It is time saving and energy saving, simplify production technology, save great amount of cost, in theory fire-resisting cable to produce length unrestricted.
Present invention also offers a kind of preparation method of above-mentioned fire-resisting cable for power Transmission, comprise the following steps：
1) copper conductor 1 is taken；
Take the basalt fiber cloth of one piece of strip, then along its length on center line fold, then use basalt
Side seam on two length directions of the basalt fiber cloth is combined by single, then removes unnecessary joining edge,
The interior basalt fiber cloth set 201 of hollow tubular is obtained, then interior basalt fiber cloth is covered to one end on 201 length direction
From interior basalt fiber cloth cover 201 it is hollow in pass through to cause the interior outside of interior basalt fiber cloth set 201 to exchange and cause
For ensconced in the basalt fibre line of suture the interior basalt fiber cloth set it is hollow in, it is stand-by；
Take the basalt fiber cloth of one piece of strip, then along its length on center line fold, then use basalt
Side seam on two length directions of the basalt fiber cloth is combined by single, then removes unnecessary joining edge,
The outer basalt fiber cloth set 203 of hollow tubular is obtained, then outer basalt fiber cloth is covered to one end on 203 length direction
From outer basalt fiber cloth cover 203 it is hollow in pass through to cause the interior outside of outer basalt fiber cloth set 203 to exchange and cause
For ensconced in the basalt fibre line of suture the outer basalt fiber cloth set it is hollow in, it is stand-by；
And the internal diameter size of the control interior basalt fiber cloth set 201 meets the interior basalt fiber cloth set and is tightly placed in
On the copper conductor 1, and the internal diameter of the control outer basalt fiber cloth set 203 is more than the interior basalt fiber cloth set 201
External diameter, and the knitting eyelet of the control outer basalt fiber cloth set 203 and interior basalt fiber cloth set 201 is big slight
In the particle size of the magnesia powder, to prevent powder from the outer basalt fiber cloth set 203 and interior basalt fibre
Spilt in the knitting eyelet of cloth set 201；
Magnesia powder and silicone oil are well mixed, it is stand-by；
Take a hollow mould tube 6, and the internal diameter of the control mould tube 6 and the outer basalt fiber cloth set 203
External diameter it is identical, and the length of the mould tube 6 is is provided with screw thread on 15cm, and the lower end outer circumference surface of the mould tube 6,
And the mould tube 6 in vertical to being fixed in frame；
A hollow initial skirt is taken, and the internal diameter of the initial skirt is identical with the internal diameter of the mould tube 6, and institute
The external diameter for stating initial skirt is identical with the external diameter of the mould tube 6, and the length of the initial skirt is 5cm, and described initial
Screw thread is provided with the upper end outer circumferential face of skirt, and the lower end of the initial skirt is provided with for fastening the outer basalt
The fastening end cap of fiber cloth set 203, interior basalt fiber cloth set 201 and copper conductor 1；
2) by step 1) in the interior basalt fiber cloth set 201 be set in step 1) in copper conductor 1 on；
Then by step 1) in the outer basalt fiber cloth set 203 be set in the interior basalt fiber cloth set 201
On；
Then the outer basalt fiber cloth set 203, interior basalt fiber cloth set 201 and the copper that are set-located are led
Body 1 is inserted in the mould tube 6, is inserted into the initial skirt, most the outer basalt fiber cloth set 203, interior profound at last
The fastening end that military rock fiber cloth set 201 and copper conductor 1 are fixed on the initial skirt is covered, and then coordinates institute by nut
Initial skirt is threadedly coupled by the screw thread for stating the upper end of initial skirt with the screw thread of the lower end of mould tube 6 with mould tube 6；
Then the free end outer basalt fiber cloth covered on 203 length direction is turned up, and exchanges its interior outside, always
Turn up until outer basalt fiber cloth covers outer turn-line 204 on 203 close to the upper edge of the mould tube 6；
The part exposed outside the mould tube 6 of the copper conductor 1 is supported using a series of flat idler, it is described
The horizontal part of copper conductor 1 is connected by a bending section with inserting the part in the mould tube 6；
Ensure that the copper conductor 1 inserted in mould tube 6 is always positioned at the longitudinal center line of the mould tube 6 using guide roller
On；
3) to the mould tube 6 and the filling magnesia powder and silicone oil being well mixed in initial skirt；
Then with pressure pipe is smash by the magnesia powder in the mould tube 6 and initial skirt and silicone oil compacting, control is aoxidized
Magnesium powder and the filling amount of silicone oil with cause upper edge 4cm of the powder compact 202 away from mould tube 6 that is compacted in rear mold pipe 6~
5cm；
Then screw on nut disconnects the threaded connection of mould tube 6 and initial skirt；
Then 5cm is moved straight down using batching the initial skirt of machine travel；
During initial skirt is moved straight down, drive outer basalt fiber cloth cover 203 outer turn-line 204 by
Gradually move up；
4) filling well mixed magnesia powder and silicone oil again into the mould tube 6；
Then with pressure pipe is smash by the magnesia powder in the mould tube 6 and silicone oil compacting, magnesia powder and silicon are controlled
The filling amount of oil is to cause upper edge 4cm~5cm of the powder compact 202 away from mould tube 6 being compacted in rear mold pipe 6；
Then 5cm is moved using the direction for batching the initial skirt of machine travel to remote mould tube 6；
Then repeat according to the initial skirt movement 5cm of filling powder-smash press-powder end-traction；
5) after the length of the copper conductor 1 with refractory insulating layer 2 pulled out from mould tube 6 meets bending radius,
Copper conductor 1 with refractory insulating layer 2 is bent into horizontal direction, is supported using a series of flat idler；
When the refractory insulating layer 2 produced closes on the free end of copper conductor 1, stop filling powder, then will carry fire resisting
The copper conductor 1 of insulating barrier 2 is exited from mould tube 6 along the pulling motion direction of script copper conductor 1, then remove fastening end cap with
And initial skirt, it is then resistance in the wrapped making in the two ends without powder compact 202 of copper conductor 1 with Ceramic silicon rubber composite band
Fiery insulating barrier 2, and control outer basalt fiber cloth set 203 and interior basalt fiber cloth set 201 is wrapped in Ceramic silicon rubber
Between composite band and copper conductor 1；
6) in the outside of refractory insulating layer 2 extruded insulation layer 3, water blocking layer 4 and restrictive coating 5 successively from inside to outside, finally
Obtain fire-resisting cable.
The preparation method of mineral insulated cable of the prior art is mainly three kinds：The prefabricated Magnesium oxide knob insulator most started
Method, later magnesia powder automatic filling method and newest copper strips indulge bag argon arc welding welding continuous rolling method.The application is provided
The preparation method of the fire-resisting cable for power Transmission with reference to the magnesia automatic filling method of mineral insulated cable, the two is not
Same place is that the wrappage for wrapping up powder is different and is that soft outer basalt fiber cloth covers 203 due to wrap up powder
Part steps in caused production technology are different, and the other steps and corresponding technological parameter in production technology are substantially
Identical, the method and apparatus of not detailed description can be with the preparation method for the fire-resisting cable for power Transmission that the application is provided
With reference to the magnesia automatic filling method of mineral insulated cable, technical inspiration is obtained.
In the preparation method of the application, outer basalt fiber cloth covers 203 soft textures, can turn up, before beginning is filling,
The free end first outer basalt fiber cloth covered on 203 length direction is turned up, and interior outside is exchanged, and is turned up always until the outer Black Warrior
Outer turn-line 204 on rock fiber cloth set 203 now, can contain the only mould of powder close to the upper edge of the mould tube 6
Have the less space of this length in pipe 6, smash pressure pipe or similar smash pressure device and can successfully pass in and out in the mould tube 6
Less space, smash pressure pipe and be often compacted once, then lift, then initial skirt hauls the powder being compacted in mould tube 6
Last pressed compact 202 now there remains general 5cm or so powder compact 202 to outgoing 5cm in mould tube 6, as smashing pressure next time
It is rebasing, powder compact 202 in mould tube 6 is to during outgoing, the outer turn-line on outer basalt fiber cloth set 203
204 can also move up in 5cm, such mould tube 6 in the presence of the upper edge of mould tube 6 and vacate under a space wait
Powder filling once and pressure is smash, so moving 5cm according to filling powder-smash the initial skirt of press-powder end-traction repeats, therefore
In theory fire-resisting cable to produce length unrestricted.
In the application, outer basalt fiber cloth set 203 is with interior basalt fiber cloth set 201 due to being basalt fibre material
Matter, very well, copper sheath than wrapping up magnesia powder in mineral insulated cable is more resistance to be drawn the mechanical mechanics property such as its tensile strength
With it is pressure-resistant, outer basalt fiber cloth set 203 will not be burst under above-mentioned 10MPa~20MPa compaction pressure, it is ensured that cavity
In magnesium oxide powder be in compacted state all the time before baked wheaten cake so that cable has preferable insulating properties, will not be because of being powder
Hole between end and it is conductive, and due to being basalt fibre material, its fusing point is very high and high-temperature behavior very well, it is more exhausted than mineral
The more resistance to baked wheaten cake of copper sheath of magnesia powder is wrapped up in edge cable, will not be burnt under fire burning and break or burn leakage, it is ensured that be empty
Magnesium oxide powder in chamber is in compacted state all the time during baked wheaten cake, and the particle diameter of control magnesium oxide powder is more than the outer Black Warrior
The knitting eyelet of rock fiber cloth set 203 so that powder is unlikely to spill from the knitting eyelet of outer basalt fiber cloth set 203.
In the application, the effect of mould tube 6 is the effect that mould is served as during press-powder end is smash, if without mould
Pipe 6, because outer basalt fiber cloth covers, 203 quality are softer, and it can deform during pressure is smash, and smash whole copper after the completion of pressure
The thickness of powder compact 202 on the circumferential surface of conductor 1 will be uneven consistent.
In the application, the functioning as of initial skirt most starts to smash a pressure-bearing device of pressure, outer basalt for the first time
The lower end that fiber cloth set 203 covers 201 with interior basalt fiber cloth is opening, if without initial skirt, first time filling powder
End, powder will all be missed from following outlet, be that this application is provided with initial skirt, blocked outer basalt fiber cloth set
The lower ending opening in the space between 203 and interior basalt fiber cloth set 201, the filling powder for accepting is also used for smashing pressure
Pipe smashes the lower bolster of pressure for the first time；Its another effect is to cover tightly admittedly described outer basalt fiber cloth using fastening end thereon
Set 203, interior basalt fiber cloth set 201 and copper conductor 1, it is preferred that outer basalt fiber cloth set 203 and interior basalt cloth
Set only two ends are fastened on fastening end and covered, and remainder keeps internal diameter and external diameter constant, in case the powder obtained after pressure is smash in influence
The uniformity of thickness on the circumferential surface of last pressed compact 202, then, after the completion of pressure is smash in mould tube 6, initial skirt can also be made
For a drawing head, haul the copper conductor 1 with powder compact 202 and be moved rearwards by.
In the preparation method of the application, maximum innovative point is exactly on the length direction for cover outer basalt fiber cloth 203
Free end turn up, make its interior outside exchange, turn up always until outer basalt fiber cloth cover 203 on outer turn-line 204 connect
The upper edge of the nearly mould tube 6, mating mold pipe 6, built in mould tube 6 length very little wait smash pressure space
(smash pressure for the first time and be about 10cm, smash pressure every time later and be about 5cm), so smashes pressure pipe or similar pressure device of smashing can be with
Successfully pass in and out and carry out smashing pressure in the mould tube 6, thoroughly solve the magnesia powder automatic filling method of above-mentioned mineral insulated cable
In the problem of can not be processed due to amount of deflection flexural deformation, because copper conductor 1 now used is the copper conductor 1 of target thickness,
The external diameter of outer basalt fiber cloth set 203 is the external diameter of target refractory insulating layer 2, smashes after the completion of pressure without drawing again or rolls
System, it is time saving and energy saving, save great amount of cost.
After pressure certain length is smash, the copper conductor 1 not wrapped up by powder compact 202 is horizontal by a series of level
Carrying roller supports (i.e. the copper conductor 1 of the upstream of mould tube 6 is horizontal), and the copper conductor 1 wrapped up by powder compact 202 is also in
Horizontality supports (i.e. the copper conductor 1 in the downstream of mould tube 6 is horizontal) by a series of flat idler, and mould tube 6 begins
Eventually for it is vertical to, in this way, in terms of the length direction of whole copper conductor 1, just constitute a class zigzag, an occupancy level space,
Vertical space is prevented take up, it is convenient to build factory building and location production unit.
Since being filling powder in the basalt fiber cloth set being all open to two ends, it is necessary in outer basalt fiber cloth set
203 two ends carry out sealing treatment, and also having led to the two ends of copper conductor 1 can not be wrapped up by powder compact 202：Just
The presence of beginning skirt causes one end of copper conductor 1 can not be wrapped up by powder compact 202, and when the refractory insulating layer produced
2 when closing on the free end of copper conductor 1, also inconvenient progress powder filling and pressure is smash, therefore, in the application, when the fire resisting produced is exhausted
When edge layer 2 closes on the free end of copper conductor 1, stop filling powder, then by the copper conductor 1 with refractory insulating layer 2 from mould
Exited in pipe 6 along the pulling motion direction of script copper conductor 1, fastening end cap and initial skirt are then removed, then with ceramics
SiClx rubber composite belt copper conductor 1 the two ends without powder compact 202 it is wrapped make refractory insulating layer 2, and control will be outer
Basalt fiber cloth set 203 and interior basalt fiber cloth set 201 are wrapped between Ceramic silicon rubber composite band and copper conductor 1,
Outer basalt fiber cloth is covered to the two of 203 and interior basalt fiber cloth set 201 using the winding of Ceramic silicon rubber composite band
Side pressure tightening seal is between Ceramic silicon rubber composite band and copper conductor 1.
In the application, a layer insulating 3 is extruded again in the outside of refractory insulating layer 2, be for powder pressure before preventing from burning
Base 202 using the exhausted insulating properties of electricity present in process in the problem of being declined that be powered, because powder compact 202 is one in itself before burning
Individual compacts, particle is simply pressed together with particle under external force, is not connected chemically power between particle and particle, is deposited
In the possibility that electrical insulating property declines under extraneous emergency case, in order to perfectly safe, the application is additionally arranged a layer insulating again
3, so far, not only fire resisting but also the insulation of refractory insulating layer 2,3 insulation of insulating barrier form the structure of one layer of fire resisting, two layers of insulation.
To sum up, present invention also provides the preparation method of the above-mentioned fire-resisting cable for power Transmission, preparation method ginseng
The magnesia automatic filling method of mineral insulated cable has been examined, but it is not fully identical with magnesia automatic filling method, but parcel
The wrappage of powder is different and is that the outer basalt fiber cloth of softness covers the production technology caused by 203 wrap up powder
In part steps it is different so that fire-resisting cable is without drawing again or rolling, the length for the fire-resisting cable that can be produced in theory
Degree is unrestricted, time saving and energy saving, saves cost, improves production capacity.
The method and apparatus of the not detailed description of the present invention are prior art, are repeated no more.
Specific embodiment used herein is set forth to the principle and embodiment of the present invention, above example
Illustrate the method and its core concept for being only intended to help to understand the present invention.It should be pointed out that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these change
Enter and modify to also fall into the protection domain of the claims in the present invention.
Claims (5)
1. a kind of fire-resisting cable for power Transmission, it is characterised in that including wrap up successively from inside to outside copper conductor, fire resisting
Insulating barrier, insulating barrier, water blocking layer and restrictive coating；
The refractory insulating layer includes two and is located at two positioned at the end at the copper conductor length direction two ends and one respectively
Pars intermedia between the individual end；
The end of the refractory insulating layer is Ceramic silicon rubber composite band, and the Ceramic silicon rubber composite band is wrapped described
On the two ends of copper conductor；
The pars intermedia of the refractory insulating layer include interior basalt fiber cloth set, outer basalt fiber cloth set, magnesia powder and
Silicone oil；
The interior basalt fiber cloth set and outer basalt fiber cloth set are sequentially sleeved on the copper conductor from inside to outside, and
The internal diameter of the outer basalt fiber cloth set is more than the external diameter of the interior basalt fiber cloth set, with the interior basalt fibre
A cavity for being used to store magnesia powder and silicone oil is formed between cloth set and outer basalt fiber cloth set, and it is described outer profound
The size of the knitting eyelet of military rock fiber cloth set and interior basalt fiber cloth set is less than the particle size of the magnesia powder, with
Prevent powder from being spilt from the knitting eyelet of the outer basalt fiber cloth set and interior basalt fiber cloth set；
It is compacted after the magnesia powder and silicone oil are well mixed in the outer basalt fiber cloth set and interior basalt fiber cloth
In cavity between set；
The Ceramic silicon rubber composite band winds the outer basalt fiber cloth set with the two ends that interior basalt fiber cloth covers
Compression is sealed between Ceramic silicon rubber composite band and copper conductor；
The preparation method of the fire-resisting cable, comprises the following steps：
1) copper conductor is taken；
Take the basalt fiber cloth of one piece of strip, then along its length on center line fold, then use basalt fibre
Side seam on two length directions of the basalt fiber cloth is combined by line, is then removed unnecessary joining edge, is obtained
The interior basalt fiber cloth set of hollow tubular, the one end on length direction for then covering interior basalt fiber cloth is from interior basalt
Fiber cloth set it is hollow in pass through that the interior outside of interior basalt fiber cloth set is exchanged and causes the basalt for suturing
Ensconce in single the interior basalt fiber cloth set it is hollow in, it is stand-by；
Take the basalt fiber cloth of one piece of strip, then along its length on center line fold, then use basalt fibre
Side seam on two length directions of the basalt fiber cloth is combined by line, is then removed unnecessary joining edge, is obtained
The outer basalt fiber cloth set of hollow tubular, the one end on length direction for then covering outer basalt fiber cloth is from outer basalt
Fiber cloth set it is hollow in pass through that the interior outside of outer basalt fiber cloth set is exchanged and causes the basalt for suturing
Ensconce in single the outer basalt fiber cloth set it is hollow in, it is stand-by；
And the internal diameter size of the control interior basalt fiber cloth set meets the interior basalt fiber cloth set and is tightly placed in the copper
On conductor, and the internal diameter of the control outer basalt fiber cloth set is more than the external diameter of the interior basalt fiber cloth set, and controls
The particle diameter that the size of the knitting eyelet of the outer basalt fiber cloth set and interior basalt fiber cloth set is less than magnesia powder is big
It is small, to prevent powder from being spilt from the knitting eyelet of the outer basalt fiber cloth set and interior basalt fiber cloth set；
Magnesia powder and silicone oil are well mixed, it is stand-by；
Take a hollow mould tube, and the external diameter phase of the internal diameter of the control mould tube and the outer basalt fiber cloth set
Together, and the mould tube length to be provided with screw thread, and the mould on 15cm, and the lower end outer circumference surface of the mould tube
Pipe is in vertical to being fixed in frame；
A hollow initial skirt is taken, and the internal diameter of the initial skirt is identical with the internal diameter of the mould tube, and it is described first
The external diameter of beginning skirt is identical with the external diameter of the mould tube, and the length of the initial skirt is 5cm, and the initial skirt
Screw thread is provided with upper end outer circumferential face, and the lower end of the initial skirt is provided with for fastening the outer basalt fiber cloth
The fastening end cap of set, interior basalt fiber cloth set and copper conductor；
2) by step 1) in the interior basalt fiber cloth set be set in step 1) in copper conductor on；
Then by step 1) in the outer basalt fiber cloth set be set in the interior basalt fiber cloth and put；
Then the outer basalt fiber cloth set being set-located, interior basalt fiber cloth set and copper conductor are inserted described
In mould tube, be inserted into the initial skirt, most at last the outer basalt fiber cloth set, interior basalt fiber cloth set and
The fastening end that copper conductor is fixed on the initial skirt is covered, and the spiral shell of the upper end of the initial skirt is then coordinated by nut
Initial skirt is threadedly coupled by line with the screw thread of the mould tube lower end with mould tube；
Then the free end on length direction outer basalt fiber cloth covered is turned up, and exchanges its interior outside, turns up straight always
The outer turn-line put to outer basalt fiber cloth is close to the upper edge of the mould tube；
The part exposed outside the mould tube of the copper conductor, the copper conductor are supported using a series of flat idler
Horizontal part be connected by a bending section with inserting the part in the mould tube；
Ensure that the copper conductor inserted in mould tube is always positioned on the longitudinal center line of the mould tube using guide roller；
3) to the mould tube and the filling magnesia powder and silicone oil being well mixed in initial skirt；
Then the magnesia powder and silicone oil in the mould tube and initial skirt are compacted with smashing pressure pipe, control magnesia powder with
And the filling amount of silicone oil with cause be compacted rear mold pipe in upper edge 4cm~5cm of the powder compact away from mould tube；
Then screw on nut disconnects the threaded connection of mould tube and initial skirt；
Then 5cm is moved straight down using batching the initial skirt of machine travel；
During initial skirt is moved straight down, drive outer turn-line that outer basalt fiber cloth covers gradually to moving up
It is dynamic；
4) filling well mixed magnesia powder and silicone oil again into the mould tube；
Then with pressure pipe is smash by the magnesia powder in the mould tube and silicone oil compacting, the filling of magnesia powder and silicone oil is controlled
Loading amount with cause be compacted rear mold pipe in upper edge 4cm~5cm of the powder compact away from mould tube；
Then 5cm is moved using the direction for batching the initial skirt of machine travel to remote mould tube；
Then repeat according to the initial skirt movement 5cm of filling powder-smash press-powder end-traction；
5) after the length of the copper conductor with refractory insulating layer pulled out from mould tube meets bending radius, with fire resisting
The copper conductor of insulating barrier is bent into horizontal direction, is supported using a series of flat idler；
When the refractory insulating layer produced closes on the free end of copper conductor, stop filling powder, then will carry refractory insulating layer
Copper conductor exited from mould tube along the pulling motion direction of script copper conductor, then remove fastening and end cap and initially draw
Pipe, then with Ceramic silicon rubber composite band copper conductor the wrapped making refractory insulating layer in the two ends without powder compact, and
Control covers outer basalt fiber cloth and interior basalt fiber cloth set is wrapped between Ceramic silicon rubber composite band and copper conductor；
6) in the outside of refractory insulating layer extruded insulation layer, water blocking layer and restrictive coating successively from inside to outside, fire resisting is finally given
Cable.
2. fire-resisting cable according to claim 1, it is characterised in that the insulating barrier is crosslinked polyetylene insulated layer.
3. fire-resisting cable according to claim 1, it is characterised in that the water blocking layer is two-sided waterstop with overlapping wrapped
The wrapped outer surface in the insulating barrier of mode is constituted.
4. fire-resisting cable according to claim 1, it is characterised in that also including armor, the armor is located at described
Between insulating barrier and the restrictive coating, the armor is steel-tape armouring layer.
5. fire-resisting cable according to claim 1, it is characterised in that the restrictive coating protects for low smoke, zero halogen polyolefin flame-retardant
Jacket layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610992861.1A CN106448905B (en) | 2016-11-10 | 2016-11-10 | A kind of fire-resisting cable for power Transmission |
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| CN107808716A (en) * | 2017-09-30 | 2018-03-16 | 四川力智久创知识产权运营有限公司 | A kind of cable insulation |
| CN112071501A (en) * | 2020-08-12 | 2020-12-11 | 福建恒汇电缆有限公司 | Self-bearing fire-resistant flame-retardant coaxial high-voltage cable and manufacturing method thereof |
| CN113223759B (en) * | 2021-03-29 | 2022-11-08 | 浙江元通线缆制造有限公司 | Production process of magnesium oxide mineral insulated cable |
| CN113488245B (en) * | 2021-07-06 | 2023-04-07 | 海盐爱德森特种线缆有限公司 | High-temperature-resistant color-changing cable and production process thereof |
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| CN201387747Y (en) * | 2009-04-14 | 2010-01-20 | 江苏中兴电缆有限公司 | Mineral insulated cable with copper cores and jackets |
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