CN109841329A - Fire-resisting cable is pressed in new ceramics low bulk isolated form - Google Patents
Fire-resisting cable is pressed in new ceramics low bulk isolated form Download PDFInfo
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- CN109841329A CN109841329A CN201910245051.3A CN201910245051A CN109841329A CN 109841329 A CN109841329 A CN 109841329A CN 201910245051 A CN201910245051 A CN 201910245051A CN 109841329 A CN109841329 A CN 109841329A
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- polyolefin
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- 239000000919 ceramic Substances 0.000 title claims abstract description 40
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 229920000098 polyolefin Polymers 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims abstract description 28
- 239000003063 flame retardant Substances 0.000 claims abstract description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 25
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 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 abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000004888 barrier function Effects 0.000 claims abstract description 19
- 239000004411 aluminium Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052786 argon Inorganic materials 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 113
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 239000003365 glass fiber Substances 0.000 claims description 14
- -1 polyethylene Polymers 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 206010039509 Scab Diseases 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000034994 death Effects 0.000 description 2
- 231100000517 death Toxicity 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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Abstract
The present invention relates to electrical cable technical fields, it discloses in a kind of new ceramics low bulk isolated form and presses fire-resisting cable, including cable core and insulating refractory layer, insulating refractory layer successively includes oxygen barrier layer from the inside to the outside, flame retardant coating and outer jacket, the oxygen barrier layer, flame retardant coating, outer jacket is successively wrapped on the outside of cable core, cable core successively includes conductor from the inside to the outside, conductor shield, insulating layer, insulation screen, first buffer layer, metal screen layer, second buffer layer and longitudinal wrap argon arc welding aluminium set layer, the material of the first buffer layer and second buffer layer blocks water for semiconductive expands band.This cable is using high fire-retardance polyolefin as oxygen barrier layer; ceramic polyolefin is as flame retardant coating; low bulk crusts polyolefin as restrictive coating; so that cable has the function of excellent insulating refractory; increasing longitudinal wrap argon arc welding aluminium set layer simultaneously can protect conductor from foreign impacts, and buffer layer can avoid insulating materials burning expansion under high temperature and destroy insulating refractory layer and internal cable core.
Description
Technical field
The invention belongs to electrical cable technical fields, resistance to more particularly to pressing in a kind of new ceramics low bulk isolated form
Thermoelectricity cable.
Background technique
With the continuous progress of society, the raising of living standards of the people, people are increasingly heavier to the safety in life
Depending on, but people, while pursuing high-quality life, enjoying the clusterings such as emporium, grand theater life, fire safety is also more next
More important and urgent, comprehensive each conflagration is reported, wherein the spontaneous combustion of wire and cable and the fire that causes accounts for significant proportion,
And cause the ratio of personnel itself injures and deaths also to occupy very big ratio because of the reason of wire and cable again in fire, for example, fiery
Power transmission, which occurs, for the wire and cable that the calamity time very short after occurring bears power transmission interrupts, and causes elevator, illumination cannot be just
Often work, and so that people is tried in any path one could without heeding which one chose and cause injures and deaths.
At present fire-resisting cable application range it is extensively, such as: TV station, hospital, cinema, mall, subway, tunnel, railway,
Airport, station, large-scale Public Physical Education, public place of entertainment, large supermarket, hotel, skyscraper, military installations, nuclear power station, coal
Mine, chemical industry, medicine, steel, metallurgy, ship, civilian etc..
Existing fire-resisting cable is all made of copper core cable, and weight is big, and it is polyvinyl chloride that this oversheath, which uses, and fire occurs
When, oversheath burning can produce thick smoke, and fire resistance period is short.
Therefore, the emphasis how to solve the above problems as those skilled in the art's research.
Summary of the invention
The first purpose of this invention, which is to provide in a kind of new ceramics low bulk isolated form, presses fire-resisting cable,
The embodiment of the present invention is achieved in that
Fire-resisting cable, including cable core and insulating refractory layer are pressed in a kind of new ceramics low bulk isolated form, it is described heat-insulated
Flame retardant coating includes successively from the inside to the outside oxygen barrier layer, flame retardant coating and outer jacket, and the oxygen barrier layer, flame retardant coating, outer jacket successively wrap up
On the outside of cable core, the cable core successively includes conductor, conductor shielding layer, insulating layer, insulation screen, the first buffering from the inside to the outside
The material of layer, metal screen layer, second buffer layer and longitudinal wrap argon arc welding aluminium set layer, the first buffer layer and second buffer layer is
Semiconductive, which blocks water, expands band.
Further, conductor is strands circle type structure, and it is twisted to be all made of molded line, and conductor filled coefficient is up to 98%
More than.
Further, conductor shield, insulating layer, insulation screen are produced using three-layer co-extruded technique, conductor shield,
Material corresponding to insulating layer, insulation screen is divided into any one in following two material, and one kind is that semiconductive is cross-linking poly-
Ethylene, processes for chemically crosslinked polyethylene, semiconductive crosslinkable polyethylene, another kind are semi-conductive polypropylene, polypropylene, semiconductive poly- third
Alkene.
Further, the thickness of first buffer layer and second buffer layer is 0.6mm-2mm.
Further, the material of metal screen layer is that copper strip shielding or copper wire are dredged around+wrapped the composite construction in copper strips gap.
Further, longitudinal wrap argon arc welding aluminium set layer with a thickness of 1mm-2mm.
Further, the material of oxygen barrier layer is high fire-retardance polyolefin, and high fire-retardance polyolefin is that oxygen index (OI) is greater than or equal to 41
Polyolefin, oxygen barrier layer with a thickness of 3mm-5mm.
Further, flame retardant coating uses ceramic polyolefin layer+glass fibre belt+fireproof coating layer composite construction,
The ceramic polyolefin layer is with a thickness of 3mm-5mm, and two layers totally, every layer of 0.2mm of the glass fibre belt, the glass fibre
The mode that belt puts up 25~30% is overlapped around ceramic polyolefin layer surface is wrapped in, and fireproof paint coating is overlying on glass fiber tape
Layer surface.
Further, the material of outer jacket is low bulk crust polyolefin, and the low bulk crust polyolefin is expansion system
Number is less than 5*10-6The polyolefin of every Kelvin, the restrictive coating with a thickness of 2mm-5mm.
Further, the inside of outer jacket is machined with several sealed internal chambers, is filled with extinguishing chemical unit in sealed internal chamber.
The beneficial effects of the present invention are:
1, for cable of the present invention in burning, flame retardant coating forms fine and close ceramic structure, can be formed after high-temp combustion
Hard ceramic armor cooling and insulating flame retardant coating, protection circuit is unobstructed, and the ablation time is longer, and ceramic armouring is harder, has excellent
Different fire insulation heat insulation；And fireproof coating in flame retardant coating is heated decomposites non-ignitable inert gas, water down protected object body by
The imflammable gas thermally decomposed out is allowed to nonflammable or burning velocity slows down, and it is heated decomposite the groups such as NO, NH3, and have
Machine free radical chemical combination interrupts chain reaction, reduces temperature；
2, the oxygen barrier layer fire retardant polyolefin high using fire-retardant coefficient prevents propagation of flame and releases moisture, water when burning
Divide volatilization rapidly at high temperature, takes away heat, reduce the temperature of cable, the vapor being formed simultaneously can water down cable ambient oxygen
The concentration of gas slows down the speed of burning；
3, restrictive coating is crusted polyolefin using the low expansion of the coefficient of expansion, and it is heat-insulated to quickly form holey in burning
Layer, effectively slows down outside heat to cable internal transmission, while expansion crust being avoided to squeeze internal cable core, keeps cable core structure
Stability；
4, the design of buffer layer structure can avoid insulation expansion under high temperature and destroy insulating refractory layer and internal cable core.
5, for this cable when external flame temperature is up to 950 DEG C~1000 DEG C, cable core internal temperature is lower than 300 DEG C.With excellent
Different fire insulation heat insulation.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of flame retardant coating；
Fig. 3 is the structural schematic diagram of embodiment two.
Icon: 1- cable core, 101- conductor, 102- conductor shield, 103- insulating layer, 104- insulation screen, 105-
One buffer layer, 106- metal screen layer, 107- second buffer layer, 108- longitudinal wrap argon arc welding aluminium set layer, 2- insulating refractory layer, 201-
Oxygen barrier layer, 202- flame retardant coating, 203- restrictive coating, 2021- ceramic polyolefin layer, 2022- glass fibre belt, 2023- fire prevention
Dope layer, 3- sealed internal chamber, 4- extinguishing chemical unit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Embodiment one
It please refers to shown in Fig. 1 to Fig. 2, the present embodiment provides press flame proof electrical in a kind of new ceramics low bulk isolated form
Cable, including cable core 1 and insulating refractory layer 2, the insulating refractory layer 2 successively include oxygen barrier layer 201, flame retardant coating 202 from the inside to the outside
With outer jacket 203, the oxygen barrier layer 201, flame retardant coating 202, outer jacket 203 are successively wrapped in the outside of cable core 1, the cable core 1 by
It is interior to outside successively include conductor 101, conductor shield 102, insulating layer 103, insulation screen 104, first buffer layer 105, gold
Belong to shielded layer 106, second buffer layer 107 and longitudinal wrap argon arc welding aluminium set layer 108, the first buffer layer 105 and second buffer layer
107 material blocks water for semiconductive expands band.
Specifically: the conductor 101 is strands circle type structure, and is all made of molded line and is twisted, conductor filled coefficient
Up to 98% or more, 101 appearance rounding of conductor is bright and clean, and avoidable drawing presses to form burr, and field distribution is more uniform, is conducive to height
The lower stability to insulate of temperature；
The conductor shield 102, insulating layer 103, insulation screen 104 are produced using three-layer co-extruded technique, conductor screen
Any one that layer 102, insulating layer 103, material corresponding to insulation screen 104 be divided into following two material is covered, wherein one
Kind is semiconductive crosslinkable polyethylene, processes for chemically crosslinked polyethylene, semiconductive crosslinkable polyethylene, and another kind is semiconductive poly- third
Alkene, polypropylene, semi-conductive polypropylene；
The material of the metal screen layer 106 be copper strip shielding or copper wire dredge around with the wrapped composite construction copper strips in copper strips gap
With a thickness of 0.10mm-0.12mm, copper wire dredges the calculation of short-circuit current around the+wrapped composite construction in copper strips gap by cable, and
The section of copper wire and be not less than 25mm2；
The material of the first buffer layer 105 and second buffer layer 107 blocks water for semiconductive expands band, has semiconductive special
Property, product resistance is small, can effectively buffer electric field strength, high mechanical strength, and the thickness of first buffer layer 105 and second buffer layer is equal
For 0.6mm-2mm, material can be expanded in burning due to cable insulation, thus 107 layers of first buffer layer 105 and the second buffering to
The interior surge reduced to conductor, guarantees that conductor is not under compression, and keeps normal working condition, can reduce to heat-insulated outward
The expansion surge of flame retardant coating, avoids damage to insulating refractory layer；
The longitudinal wrap argon arc welding aluminium set layer 107 can generate with a thickness of 1mm-2mm since insulating refractory layer 2 is when then
Moisture, therefore longitudinal wrap argon arc welding aluminium set layer 105 can prevent moisture by penetrating into 105 inside of longitudinal wrap argon arc welding aluminium set layer inside outside, keep away
Exempt from influence of the moisture to metal screen layer 102, insulation screen 104 and conductor 101, while longitudinal wrap argon arc welding aluminium set layer 105 can
External mechanical impact, vibration are born, the integrality of protection metal screen layer 102, insulation screen 104 and conductor 101 guarantees to supply
Electric line operates normally in fire process；
The flame retardant coating 202 is using ceramic polyolefin layer 2021+ glass fibre belt 2022+ fireproof coating layer 2023
Composite construction, the ceramic polyolefin layer is using low bulk crust polyolefin, and ceramic polyolefin layer 2021 is with a thickness of 3mm-
5mm, two layers totally, every layer of 0.2mm of the glass fibre belt 2022, the glass fibre belt 2022 puts up 25~30% side
Formula overlapping is coated on 2022 surface of glass fibre belt around 2021 surface of ceramic polyolefin layer, fireproof coating layer 2023 is wrapped in,
Glass fiber tape can firm attachment fireproof coating, prevent fireproof coating from falling off；In burning, ceramic polyolefin layer 2021 can
Fine and close ceramic structure is formed, there is certain mechanical strength, and with the increase of burning time, the liter of ignition temperature
Height, mechanical strength can be higher, gradually form hard ceramic armor structure, and then reduce the temperature of internal cable core, to protect
The cable core structure of the inside guarantees the normal work of route；And electrical insulation capability is excellent at normal temperature for the flame retardant coating 202, safety
Environmental protection, Halogen, tasteless, flame retardant property is good, ceramic performance is good, speed is fast for crust, investing temperature is low, after burning, not dissolved drip, no
It falls off, not will cause spot fire, securely and reliably, while fireproof coating layer is heated and decomposites non-ignitable inert gas, waters down and is protected
The heated imflammable gas decomposited of shield object, is allowed to nonflammable or burning velocity slows down, and be heated and decomposite NO, NH3 etc.
Group interrupts chain reaction with organic free radical chemical combination, reduces temperature；
The material of the oxygen barrier layer 201 be oxygen index (OI) be greater than or equal to 41 high fire-retardance polyolefin, oxygen barrier layer with a thickness of
1mm-2mm, high fire-retardance polyolefin such first is nonflammable, flame can be prevented to burn inside, destroys cable internal structure, from
And ensure that the fire resistance of cable, moisture can be released when secondly oxygen barrier layer 201 is burnt in the case of a high temperature, moisture is at high temperature
Volatilization rapidly, takes away calory burning, reduces the temperature of cable, the vapor being formed simultaneously can water down the dense of cable ambient oxygen
Degree, reduce the time of sustained combustion, and burn generate moisture take away heat reduce temperature while so that longitudinal wrap argon arc welding
The temperature of aluminium set layer 108 is not higher than 600 DEG C, and protection aluminium set is non-fusible in combustion；
The material of the restrictive coating 103 is low bulk crust polyolefin, and the low bulk crust polyolefin is the coefficient of expansion
Less than 5*10-6The polyolefin of every Kelvin, restrictive coating 103 with a thickness of 2mm-3mm, the low bulk crust polyolefin is burning
When quickly form holey thermal insulation layer, effectively slow down outside heat to cable internal transmission, at the same avoid low bulk crust exist
In combustion process, the expansion deformation of generation is small, therefore there are many opposite decrease of extruding meeting for squeezing internal cable core, substantially increase cable
The stability of cored structure.
In summary: 1, for cable of the present invention in burning, flame retardant coating forms fine and close ceramic structure, high-temp combustion
Hard ceramic armor cooling and insulating flame retardant coating can be formed afterwards, and protection circuit is unobstructed, and the ablation time is longer, and ceramic armouring is got over
Firmly, there is excellent fire insulation heat insulation；And the fireproof coating in flame retardant coating is heated and decomposites non-ignitable inert gas, waters down and is protected
The heated imflammable gas decomposited of shield object, is allowed to nonflammable or burning velocity slows down, and be heated and decomposite NO, NH3 etc.
Group interrupts chain reaction with organic free radical chemical combination, reduces temperature；
2, the oxygen barrier layer fire retardant polyolefin high using fire-retardant coefficient prevents propagation of flame and releases moisture, water when burning
Divide volatilization rapidly at high temperature, takes away heat, reduce the temperature of cable, the vapor being formed simultaneously can water down cable ambient oxygen
The concentration of gas slows down the speed of burning；
3, restrictive coating is crusted polyolefin using the low expansion of the coefficient of expansion, and it is heat-insulated to quickly form holey in burning
Layer, effectively slows down outside heat to cable internal transmission, while expansion crust being avoided to squeeze internal cable core, keeps cable core structure
Stability；
4, the design of buffer layer structure can avoid insulation expansion under high temperature and destroy insulating refractory layer and internal cable core.
5, for this cable when external flame temperature is up to 950 DEG C~1000 DEG C, cable core internal temperature is lower than 300 DEG C.With excellent
Different fire insulation heat insulation.
Embodiment two
Referring to figure 2. and shown in Fig. 3, the present embodiment provides press flame proof electrical in a kind of new ceramics low bulk isolated form
Cable, in embodiment one in addition to all technical characteristics, distinctive points are: being machined on the restrictive coating 203 several
Sealed internal chamber 3 is filled with extinguishing chemical unit 4 in sealed internal chamber 3, this design is advantageous in that: cable in combustion, sheath
The extinguishing chemical unit 4 of sealed internal chamber 3 can be discharged after layer burning, to realize fire-extinguishing function concurrently.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. pressing fire-resisting cable in a kind of new ceramics low bulk isolated form, it is characterised in that: including cable core (1) and insulating refractory
Layer (2), the insulating refractory layer (2) successively include oxygen barrier layer (201), flame retardant coating (202) and outer jacket (203) from the inside to the outside,
The oxygen barrier layer (201), flame retardant coating (202), outer jacket (203) are successively wrapped on the outside of cable core (1), and the cable core (1) is by interior
To outside successively including conductor (101), conductor shield (102), insulating layer (103), insulation screen (104), first buffer layer
(105), metal screen layer (106), second buffer layer (107) and longitudinal wrap argon arc welding aluminium set layer (108), the first buffer layer
(105) it blocks water for semiconductive with the material of second buffer layer (107) and expands band.
2. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: conductor
(101) it is strands circle type structure, and is all made of that molded line is twisted, the fill factor of conductor (101) is up to 98% or more.
3. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: conductor screen
Cover layer (102), insulating layer (103), insulation screen (104) using three-layer co-extruded technique produce, conductor shield (102), absolutely
Material corresponding to edge layer (103), insulation screen (104) is divided into any one in following two material, and one of which is half
Conductive crosslinkable polyethylene, processes for chemically crosslinked polyethylene, semiconductive crosslinkable polyethylene, another kind are semi-conductive polypropylene, poly- third
Alkene, semi-conductive polypropylene.
4. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: first is slow
The thickness for rushing layer (105) and second buffer layer (107) is 0.6mm-2mm.
5. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: metal screen
The material for covering layer (106) is that copper strip shielding or copper wire are dredged around+wrapped the composite construction in copper strips gap.
6. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: longitudinal wrap argon
Arc-welding aluminium set layer (108) with a thickness of 1mm-2mm.
7. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: oxygen barrier layer
(201) material is high fire-retardance polyolefin, and high fire-retardance polyolefin is the polyolefin that oxygen index (OI) is greater than or equal to 41, oxygen barrier layer
(201) with a thickness of 1mm-2mm.
8. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: flame retardant coating
(202) ceramic polyolefin layer (2021)+glass fibre belt (2022)+fireproof coating layer (2023) composite construction is used,
The ceramic polyolefin layer (2021) is with a thickness of 3mm-5mm, two layers totally, every layer of 0.2mm of the glass fibre belt (2022),
The mode that the glass fibre belt (2022) puts up 25~30% is overlapped around ceramic polyolefin layer (2021) surface is wrapped in, and is prevented
Fiery paint coatings (2023) are overlying on glass fibre belt (2022) surface.
9. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: outer jacket
(203) material is low bulk crust polyolefin, and the low bulk crust polyolefin is that the coefficient of expansion is less than the every Kai Er of 5*10-6
Text polyolefin, the restrictive coating with a thickness of 2mm-3mm.
10. pressing fire-resisting cable in new ceramics low bulk isolated form according to claim 1, it is characterised in that: outer shield
The inside of layer (203) is machined with several sealed internal chambers (3), is filled with extinguishing chemical unit (4) in sealed internal chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245051.3A CN109841329A (en) | 2019-03-28 | 2019-03-28 | Fire-resisting cable is pressed in new ceramics low bulk isolated form |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245051.3A CN109841329A (en) | 2019-03-28 | 2019-03-28 | Fire-resisting cable is pressed in new ceramics low bulk isolated form |
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| CN109841329A true CN109841329A (en) | 2019-06-04 |
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| CN201910245051.3A Pending CN109841329A (en) | 2019-03-28 | 2019-03-28 | Fire-resisting cable is pressed in new ceramics low bulk isolated form |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556211A (en) * | 2019-08-20 | 2019-12-10 | 安徽省通信产业服务有限公司 | Flame-retardant method for cable protective layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202632870U (en) * | 2012-06-27 | 2012-12-26 | 安徽龙庵电缆集团有限公司 | Medium-voltage fireproof frequency-conversion electric cable |
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