CN205943544U - Flexible mineral insulated fireproof cable - Google Patents

Flexible mineral insulated fireproof cable Download PDF

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Publication number
CN205943544U
CN205943544U CN201620848003.5U CN201620848003U CN205943544U CN 205943544 U CN205943544 U CN 205943544U CN 201620848003 U CN201620848003 U CN 201620848003U CN 205943544 U CN205943544 U CN 205943544U
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China
Prior art keywords
insulating barrier
conductor cores
cable
band
flexible mineral
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CN201620848003.5U
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Chinese (zh)
Inventor
刘海峰
管新元
韩再全
虞踏峰
周子南
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Jiangsu Hengtong Power Cable Co Ltd
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Jiangsu Hengtong Power Cable Co Ltd
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Abstract

The application provides a flexible mineral insulated fireproof cable relates to power cable technical field, and this cable includes: columniform conductor core and overlap the insulating layer established, band in proper order in the periphery of conductor core, separate oxygen flame retardant coating and oversheath, wherein, insulation layer package conductor core to form cylindrical cable core, the band is the ring -type, and fixed conductor core and insulating layer the utility model discloses a through insulation layer package conductor core in the cable to and separate the setting of oxygen flame retardant coating, and make the cable under the condition that meets fire or high temperature, the hard armour body can be formed rapidly, thereby fine fire -retardant, the effect that separates the fire is played, when the conflagration breaing out, be convenient for continue to use.

Description

Flexible mineral insulation fireproof cable
Technical field
This utility model is related to power cable technical field, more particularly, to flexible mineral insulation fireproof cable.
Background technology
Cable, is a kind of transmission wire rod used in power transmission process.With expanding economy and people's living standard Raising, electric power electrical apparatus using increasing, from power bus to automobile power charge stake, from office computer to Full automatic power production equipment, application in the life and production of people for the electricity is more and more universal.
In order to improve the level of security of electric wiring, increasing people begin to focus on the fire-retardant problem of cable.However, At present after actual fire occurs, cable is easy to burn, and, can not continue after combustion to transmit electric energy.But permitted When there is fire in more important occasion, the evacuation of personnel, the illumination of passage, the response of fireproof alarming equipment, automatic fire-fighting facility with And the startup of other emergency set, the supply being required for electric energy just can be with normal work.
For the problems referred to above, trace it to its cause be cable fire-proof poor performance in the market it is impossible to resist the intensity of a fire for The erosion of the construction of cable, when leading to fire to occur, cable burns, then cannot regular supply electric energy.
Utility model content
In view of this, the purpose of this utility model embodiment is to provide flexible mineral insulation fireproof cable, by setting Insulating barrier and oxygen barrier flame retardant coating etc. are so that fireproofing of cable performance enhancement.
In a first aspect, this utility model embodiment provides flexible mineral insulation fireproof cable, including:Cylindrical conductor Core and in the periphery of conductor cores insulating barrier sheathed successively, band, oxygen barrier flame retardant coating and oversheath;
Wherein, insulating barrier parcel conductor cores, with the pillared cable core of shape;
Band is annular in shape, and fixed conductor core and insulating barrier.
In conjunction with a first aspect, this utility model embodiment provides the first possible embodiment of first aspect, its In, cable core includes multiple, hingedly connected between multiple cable cores.
In conjunction with a first aspect, this utility model embodiment provides the possible embodiment of second of first aspect, its In, also include gasket for packing, cable core is multiple, and multiple cable core parallel arranged;
Gasket for packing is filled between different cable cores, and is filled between band and cable core.
In conjunction with the possible embodiment of the second of first aspect, this utility model embodiment provides the of first aspect Three kinds of possible embodiments, wherein, also include glass fiber tape, glass fiber tape wrapped oxygen barrier flame retardant coating and oversheath it Between.
In conjunction with the possible embodiment of the second of first aspect, this utility model embodiment provides the of first aspect Four kinds of possible embodiments, wherein, insulating barrier is refractory thermal insulator, and, the thickness of insulating barrier is more than or equal to 2.0mm.
In conjunction with the 4th kind of possible embodiment of first aspect, this utility model embodiment provides the of first aspect Five kinds of possible embodiments, wherein, band is alkali-free glass fibre band, and, the thickness of band is 0.17mm.
In conjunction with the third possible embodiment of first aspect, this utility model embodiment provides the of first aspect Six kinds of possible embodiments, wherein, oxygen barrier flame retardant coating is fireproof oxygen-separation body, and, the thickness of oxygen barrier flame retardant coating is more than or equal to 2.0mm.
In conjunction with the 6th kind of possible embodiment of first aspect, this utility model embodiment provides the of first aspect Seven kinds of possible embodiments, wherein, oversheath is halogen-free and low-smoke flame-retardant polyolefin sheathed material.
In conjunction with the 4th kind of possible embodiment of first aspect, this utility model embodiment provides the of first aspect Eight kinds of possible embodiments, wherein, conductor cores are one, and insulating barrier is white;
Or, conductor cores are two, the insulating barrier of two conductor cores of parcel is respectively red and blue;
Or, conductor cores are three, the insulating barrier of three conductor cores of parcel is respectively yellow, green and blue;
Or, conductor cores are four, the insulating barrier of four conductor cores of parcel is respectively yellow, green, red and blue;
Or, conductor cores are five, the insulating barrier of five conductor cores of parcel is respectively yellow, green, redness, blue and black Color.
In conjunction with the 8th kind of possible embodiment of first aspect, this utility model embodiment provides the of first aspect Nine kinds of possible embodiments, wherein, band is wrapped in the outside of insulating barrier, and band is more than along the Duplication of its winding direction Or it is equal to 25%.
The flexible mineral insulation fireproof cable that this utility model embodiment provides, this equipment includes:Cylindrical conductor cores And in the periphery of conductor cores insulating barrier sheathed successively, band, oxygen barrier flame retardant coating and oversheath, insulating barrier wraps up conductor cores, With the pillared cable core of shape, band is annular in shape, and fixed conductor core and insulating barrier.Conductor cores are wrapped up by insulating barrier, and every The setting of oxygen flame retardant coating, when there is fire, cable can form rapidly hard armour body, plays fire-retardant, fire insulation work well With thus protecting the conductor cores normal power supply of inside.
For enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and Accompanying drawing appended by cooperation, is described in detail below.
Brief description
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to use required in embodiment Accompanying drawing be briefly described it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 shows the structural framing figure of the flexible mineral insulation fireproof cable that this utility model embodiment is provided.
Primary clustering symbol description:
1- conductor cores 2- insulating barrier
3- gasket for packing 4- band
5- oxygen barrier flame retardant coating 6- oversheath
Specific embodiment
Below in conjunction with accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly Chu, it is fully described by it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole realities Apply example.The assembly of this utility model embodiment generally described and illustrated in accompanying drawing herein can be come with various different configurations Arrangement and design.Therefore, below the detailed description of the embodiment of the present utility model providing in the accompanying drawings is not intended to limit Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on this utility model Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of not making creative work, all Belong to the scope of this utility model protection.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only For the ease of describe of the present utility model simplify description, rather than instruction or the hint equipment of indication or assembly must have specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.Wherein, term " One position " is two different positions with " second position ".
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly Connect;Can be to be mechanically connected or electrically connect;Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, It can be the connection of two component internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning in this utility model for the language.
For improving the level of security of electric wiring, the fire-retardant problem of cable increasingly causes the concern of people.However, at present On market, the cable of flame retardant series is only capable of making burning be confined in certain limit, and when actually occurring fire, cable also can Burn quickly, and can not continue to be energized.For example, the BTTZ cable on market, using electrician's red copper bar as core, with Seamless copper pipe, as sheath, is processed as insulant with inorganic mineral magnesia powder.But this kind of product quality is hard, Bending property difference, it is impossible to sabot, can only be transported, constructional difficulties in lopping.In use, once there is breakage in seamless copper pipe, Particularly run into the condition of high temperature, the insulating properties of cable can decline rapidly.Secondly as inorganic mineral magnesia powder is easy The moisture absorption, the humidity resistance of cable is poor, needs to coat fluid sealant in the joint of cable, so, not only increases use cost, and And, increasing with joint, the water-proofing treatment of joint is also highly difficult.
The mineral insulated cable of another common YTTW model, its insulating barrier adopts synthetic mica tape, outer protective sleeve Using wrinkle copper sheath, and increase low smoke and zero halogen protection layer material and shield although this cable solves BTTZ cable Quality is hard, problem not easy to install, but this fireproof cable is due to being that copper sheath embossing is indulged bag and is welded, in actual motion Middle copper sheath weld is easy to crack, easily causes the short circuit of cable run.
Also having a kind of on market is the cable being combined using fire-resistant wrapping tape and plastic insulation, and this cable is due to employing Plastic insulation, it is restricted using temperature grade, and organic insulation easily burns, and can give off heat, lead during burning Cause temperature to increase, in turn result in fire-resistant wrapping tape carbonization, so this cable can not meet wanting to the fire-fighting of cable when fire occurs Ask.
To sum up, cable fire-proof performance in the market is all poor, because power-off after fire burning met by cable, therefore is promptly rescuing Conventional fire protection alarm device, automatic fire-fighting facility and other emergency set etc. during helping, all because cannot normal power-up And can not use, make troubles to fire rescue work.
As shown in figure 1, this utility model provides a kind of flexible mineral insulation fireproof cable, including:Cylindrical conductor Core 1 and in the periphery of conductor cores 1 insulating barrier sheathed successively 2, band 4, oxygen barrier flame retardant coating 5 and oversheath 6, wherein, insulation Layer 2 parcel conductor cores 1, with the pillared cable core of shape, band 4 is annular in shape, and fixed conductor core 1 and insulating barrier 2.
Specifically, conductor cores 1 are using the annealing copper conductor meeting the 2nd kind of GB/T3956-2008 not metal cladding.Cable After processing, all there is different degrees of hardening phenomenon, its tensile strength and yield strength substantially increase, plasticity and toughness Generally reduce.In process of production through (for example, 550 DEG C) annealings of high temperature, the wire of copper conductor becomes soft flexible, It is difficult to be pulled off.And, compared with common copper conductor, the resistivity of this kind of conductor cores 1 reduces, and further reduces cable Line loss.
Insulating barrier 2 adopts ceramic halogen-free and low-smoke flame-retardant polyolefin, and, the thickness of insulating barrier 2 is more than or equal to 2.0mm. Between -40 DEG C~90 DEG C, so, insulating barrier 2 can bear temperature round the clock to the temperature resistant grade of ceramic halogen-free and low-smoke flame-retardant polyolefin The change of difference, also can use in the winter of the summer of heat and severe cold, insulating barrier 2 will not be in too high or too low temperature simultaneously Aging under degree, damaged, thus, the conductor cores 1 being wrapped within insulating barrier 2 will not be exposed because of the breakage of insulating barrier 2, occurs The problem of electric leakage.
In addition, using ceramic halogen-free and low-smoke flame-retardant polyolefin as insulation system, under flame or high-temperature condition, pottery Porcelain halogen-free and low-smoke flame-retardant polyolefin can be converted into the SiO2 pottery armour body of inorganic insulation, the armour body crooked breaking strength after ablation Up to 5-6MPa, highest is resistant to 2700 DEG C of temperature, so play at high temperature fire-retardant, fire resisting well, fire prevention, fire insulation, Water proof and the effect of antidetonation, ensure that cable run can keep unimpeded for a long time when there is fire.
In this utility model, after above-mentioned insulating barrier 2 coating conductor core 1 forms cable core, the band 4 of needs annular will Conductor cores 1 and insulating barrier 2 are fixed, and band 4 is alkali-free glass fibre band, and, the thickness of band 4 is 0.17mm.
Glass fibre is a kind of Inorganic Non-metallic Materials of excellent performance, and main component is silicon dioxide, aluminium oxide, oxidation Calcium etc..It is to be formed through high temperature melting, wire drawing, doff, the technique such as weave cotton cloth with glass bead or discarded glass for raw material.Glass fibers The diameter of dimension monofilament micron from several microns to twenties meters, every bundle fiber precursor has hundreds of even thousands of monofilament groups Become, usually as the reinforcing material in composite, electrically insulating material and heat-insulating material etc., it is specifically divided into following three Kind:
Alkali-free glass fibre chemical stability, electrical insulation capability are strong, intensity is high, are mainly used as electrically insulating material, fiberglass Reinforcing material etc..
In middle alkali glass fiber, the content of R2O is 11.9%-16.4%, because its alkalinity height is it is impossible to make electrically insulating material, but Its chemical stability and intensity are fair.Typically make latex cloth, grid cloth base material, acid filter cloth, window screening base material etc., also can oppose Electrical property and the not bery strict fiberglass reinforcing material of intensity requirement.
The low intensity of high alkali glass fibre itself presence, the defect that water-fast and alkali resistance is poor, this defect is to overcome 's.Make to strengthen product, the final interests that only can damage user with it.
In this utility model flexible mineral insulation fireproof cable, therefore using alkali-free glass fibre as band 4, to strengthen electricity The insulating properties of cable.
In addition, band 4 is wrapped in the outside of insulating barrier 2, that is, band 4 is with insulating barrier 2 as axle, the outside of insulating barrier 2 with Direction clockwise or counter-clockwise carries out winding from level to level, big along the Duplication of its winding direction between each layer of band 4 In or be equal to 25%, so, on the one hand can guarantee that band 4 be wound around compactness so as to be difficult loose;On the other hand, it is to avoid The band 4 causing because Duplication is excessive between each layer of band 4 wastes, and has saved cost.
Also it is arranged with oxygen barrier flame retardant coating 5 in the outside of band 4, specially fireproof oxygen-separation body, and, oxygen barrier flame retardant coating 5 Thickness is more than or equal to 2.0mm.Material due to oxygen barrier flame retardant coating 5 is fireproof oxygen-separation body, in the situation running into fire or high temperature Under, halogen-free low-voltage polyolefin becomes water and carbon dioxide volatilization, and the armour of remaining ceramic state based on silicon dioxide is external Shell.This armour physical ability bears larger mechanical impact, its dielectric strength >=40KV/m, and crust speed is fast, and crust is hard, closely knit, Vertical self-extinguishment can be accomplished, flame retardant rating can reach VW-1 level, in the case of having flame, nonflame at 350-1600 DEG C, all not melt, Do not drip, do not fall off, do not result in spot fire, and, temperature is higher, the time longer burn after ceramic-like armour body harder, Armour body crooked breaking strength after ablation can reach 5MPa.Residue is ceramic inorganic thing, and residual volume is more than 85%.Pottery Shape armour body can form cellular fine holes during sintering, such that it is able to play good fire insulation, heat-insulated, thermal insulation effect Really, keep off fire, thermal insulation effect is higher than aluminum alloy sheath.Do not prolong combustion, do not drip, flue gas toxity reaches ZA1 level, that is, white mice sucks cigarette After gas 30 minutes, it is not changed in three days, so secondary injury will not be caused to human body.Raw material Halogen, nontoxic, tasteless, no Heavy metal, more than the requirement of ROSH standard, additionally, the density of fireproof oxygen-separation body is little, price is low, is fire resistant flexible fire-resisting cable Best solution, can replace the mica tape in aluminum alloy sheath fireproof cable and fire-resisting ceramic silicone rubber and pottery Porcelain fire resisting composite band uses, process is simple, and production efficiency is high.
It is arranged with oversheath 6 outside above-mentioned oxygen barrier flame retardant coating 5, the material of oversheath 6 is protected for halogen-free and low-smoke flame-retardant polyolefin Jacking, sheath material meets requirement specified in GB/T 12706.1.The oversheath 6 of cable is closely extruded on armor, and It is easily peeled off and do not damage fireproof oxygen-separation layer, oversheath 6 surfacing, uniform color.
For the cable butting demand of different core numbers, during actual production and use, when cable core for multiple when, many Individual cable core parallel arranged, that is, multiple insulating barriers 2 wrap up multiple conductor cores 1 respectively, to form multiple cable cores, between multiple cable cores cut with scissors Close and connect.At this moment, also include gasket for packing 3, gasket for packing 3 is alkali-free glass fibre gasket for packing 3, gasket for packing 3 is filled in different cable cores Between, and be filled between band 4 and cable core, so that forming cylindrical shape between multiple cable core, cable after filling stranding Good interstitial channels are had, this passage can play good thermolysis, the heat producing when cable normally runs between core Various this interstitial channels between gasket for packing 3 can be tieed up by alkali-free glass fiber to be radiated, run into outside during fire biography The heat led into can also be gone out by these channel conductance, and other packing materials do not possess this characteristic.
Further, according to industry standard, when conductor cores 1 are one, insulating barrier 2 is white;Conductor cores 1 are two When, the insulating barrier 2 of two conductor cores 1 of parcel is respectively red and blue;When conductor cores 1 are three, three conductor cores 1 of parcel Insulating barrier 2 is respectively yellow, green and blue;When conductor cores 1 are four, the insulating barrier 2 of four conductor cores 1 of parcel is respectively Huang Color, green, red and blue;When conductor cores 1 are five, the insulating barrier 2 of five conductor cores 1 of parcel is respectively yellow, green, red Color, blueness and black, with easy to install and use.
Additionally, can be adopted with wrapped glass fiber tape, glass fiber tape between above-mentioned oxygen barrier flame retardant coating 5 and oversheath 6 With high-temperature-resistant high type glass fibre, process through special process.Have high temperature resistant, insulation, insulation, fire protection flame retarding, Corrosion-resistant, ageing-resistant the features such as, apply to and in cable, act primarily as heat-insulated protection, insulation, insulation, the effect such as anti-corrosion.
Embodiment one
In production, make the copper monofilament constituting conductor cores 1 first, that is, pass through copper bar wire drawing, copper bar is drawn into and conforms to The copper monofilament asked, then passes through conductor strand, copper monofilament is stranding into and meets second strand specified in GB/T 3956-2008 Close conductor.Then carry out the operation of insulating barrier 2 parcel, extrude ceramic LSOH anti-flaming fire resisting polyene on conductor cores 1 surface Hydrocarbon, its thickness is not less than 2.0mm, so makes cable core.When conductor cores 1 are multiple (2 to 5), the difference of multiple conductor cores 1 Insulating barrier 2 is stranded in order to carry out stranding, and fills alkali-free glass fibre gasket for packing 3 between insulating barrier 2, to form cylinder The construction of shape, two-layer alkali-free glass fibre band overlap in surface is wrapped to be tightened.Afterwards, carry out the interpolation of fireproof oxygen-separation layer, that is, exist The surface of band 4 extrudes one layer of ceramic LSOH anti-flaming fire-resistant polyolefin oxygen barrier material, and thickness is not less than 2.0mm.Finally, exist The surface of ceramic LSOH anti-flaming fire-resistant polyolefin extrudes one layer of halogen-free and low-smoke flame-retardant polyolefin sheathed material, and thickness meets The regulation of GB/T 12706.1-2008, constitutes finished cable.
Finished cable is carried out dispatching from the factory manufacture test, specifically, applied voltage is this rated voltage for cable 0.6/1kV, is subject to Fiery temperature is (830 to 870) DEG C, fire duration 120 minutes;Started within 10 minutes to impact by fire, every impact in 10 minutes once;Examination Test first 5 minutes of end, start to spray water, every 60 seconds water sprays once, 5 seconds persistent period of water spray every time, meet above-mentioned fire resisting inspection Packaging and storage.
The flexible mineral insulation fireproof cable that the present embodiment provides, the having the technical effect that of this embodiment:By arranging cylinder Conductor cores 1 of shape and in the periphery of conductor cores 1 insulating barrier sheathed successively 2, band 4, oxygen barrier flame retardant coating 5 and oversheath 6, its In, oxygen barrier flame retardant coating 5 adopts fireproof oxygen-separation body, and fireproof oxygen-separation body can sinter pottery dress armour body, this armour body under flame ablation into Larger mechanical impact can be born so that when fire occurs, cable also can normal power-up when flame additional mechanical is vibrated.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change Or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described power The protection domain that profit requires is defined.

Claims (10)

1. flexible mineral insulation fireproof cable it is characterised in that, including:Cylindrical conductor cores and outer in described conductor cores Enclose insulating barrier sheathed successively, band, oxygen barrier flame retardant coating and oversheath;
Wherein, described insulating barrier wraps up conductor cores, with the pillared cable core of shape;
Described band is annular in shape, and fixing described conductor cores and insulating barrier.
2. flexible mineral insulation fireproof cable according to claim 1 it is characterised in that described cable core include multiple, many Hingedly connected between individual described cable core.
3. flexible mineral insulation fireproof cable according to claim 1 is it is characterised in that also include gasket for packing, described cable Core is multiple, and multiple cable core parallel arranged;
Described gasket for packing is filled between different cable cores, and is filled between described band and cable core.
4. flexible mineral insulation fireproof cable according to claim 3 is it is characterised in that also include glass fiber tape, institute State glass fiber tape wrapped between described oxygen barrier flame retardant coating and described oversheath.
5. flexible mineral insulation fireproof cable according to claim 3 is it is characterised in that described insulating barrier is hot-face insulation Body, and, the thickness of described insulating barrier is more than or equal to 2.0mm.
6. flexible mineral insulation fireproof cable according to claim 5 is it is characterised in that described band is alkali-free glass fibre Dimension band, and, the thickness of described band is 0.17mm.
7. flexible mineral insulation fireproof cable according to claim 4 is it is characterised in that described oxygen barrier flame retardant coating is fire resisting Oxygen barrier body, and, the thickness of described oxygen barrier flame retardant coating is more than or equal to 2.0mm.
8. flexible mineral insulation fireproof cable according to claim 7 is it is characterised in that described oversheath is low smoke, zero halogen Flame retardant polyolefin jacket material.
9. flexible mineral insulation fireproof cable according to claim 5 it is characterised in that described conductor cores be one, institute Stating insulating barrier is white;
Or, described conductor cores are two, the described insulating barrier of two described conductor cores of parcel is respectively red and blue;
Or, described conductor cores are three, the described insulating barrier of three described conductor cores of parcel is respectively yellow, green and blue;
Or, described conductor cores be four, parcel four described conductor cores described insulating barrier be respectively yellow, green, redness and Blue;
Or, described conductor cores are five, the described insulating barrier of five described conductor cores of parcel is respectively yellow, green, redness, indigo plant Normal complexion black.
10. flexible mineral insulation fireproof cable according to claim 9 it is characterised in that described band be wrapped in described The outside of insulating barrier, and described band along its winding direction Duplication be more than or equal to 25%.
CN201620848003.5U 2016-08-08 2016-08-08 Flexible mineral insulated fireproof cable Active CN205943544U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620848003.5U CN205943544U (en) 2016-08-08 2016-08-08 Flexible mineral insulated fireproof cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620848003.5U CN205943544U (en) 2016-08-08 2016-08-08 Flexible mineral insulated fireproof cable

Publications (1)

Publication Number Publication Date
CN205943544U true CN205943544U (en) 2017-02-08

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Application Number Title Priority Date Filing Date
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Country Status (1)

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