CN205582598U - Fire -resistant cable - Google Patents
Fire -resistant cable Download PDFInfo
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- CN205582598U CN205582598U CN201620300526.6U CN201620300526U CN205582598U CN 205582598 U CN205582598 U CN 205582598U CN 201620300526 U CN201620300526 U CN 201620300526U CN 205582598 U CN205582598 U CN 205582598U
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Abstract
The utility model provides a fire -resistant cable, including cable core and shell, the shell surrounds outward the cable core has set gradually first crust flame retardant coating and fire -retardant oversheath by interior outside to, wherein, the ceramic case under the high temperature state, is formed including fire -resistant one or more in taking of compounding of potteryization silicon rubber area, pottery polyolefin refractory matter and potteryization fire prevention to first crust flame retardant coating, and the temperature is high more, and the hardness of ceramic case is big more. Above -mentioned fire -resistant cable's the highest normal operating temperature is 135 DEG C, and fire -resistant power -on time is not less than 180min.
Description
Technical field
This utility model belongs to field of cable technology, particularly relates to a kind of fire-resisting cable.
Background technology
Along with expanding economy, the place such as skyscraper, subway, power plant to cable when the condition of a fire occurs
Security performance propose higher requirement, GB/T19666-2005 requiring, fire-resisting cable is at fired state
Under fire-resistant conduction time be 90min, as it is shown in figure 1, existing cable 100 includes: multiple cable cores
110, each cable core 110 is disposed with wire 111, mica layer 112 and plastic insulation from the inside to the outside
Layer 113；Shell 120, the plurality of cable core of outer encirclement 110, it is disposed with fire-retardant band from inside to outside
121 and flame retardant plastics sheath 122.
The refractory mechanism of above-mentioned cable 100 is for delay by flame retardant plastics sheath 122 and fire-retardant band 121
Arriving the time of plastic insulating layer 113, when a fire, As time goes on flame retardant is (fire-retardant
Plastic sheath 122, fire-retardant band 121) burnout, flame arrives plastic insulating layer 113, plastic insulating layer
113 start burning, after plastic insulating layer 113 has burnt, continue to conduction time by mica layer 112.
The fire-resistant conduction time of the cable 100 of this kind of structure design can reach 90min, but can not reach
In 180min, burning continues the requirement of energising.
Utility model content
In view of the above problems, the purpose of this utility model is to provide and a kind of improves the fire-resistant of fire-resistant conduction time
Cable.
According to an aspect of the present utility model, it is provided that a kind of fire-resisting cable, including cable core and shell, its
In, described shell, the described cable core of outer encirclement, it is disposed with the first crust flame retardant coating and resistance from inside to outside
Combustion oversheath, wherein, described first crust flame retardant coating includes Ceramic silicon rubber band, ceramic polyolefin
One or more in refractory matter and ceramic fireproof composite band, at high operating temperatures, form pottery
Shell, temperature is the highest, and the hardness of ceramic case is the biggest.
Described fire-resisting cable, wherein, described shell also includes: fire-retardant inner cushion layer, is positioned at described first
Between crust flame retardant coating and described fire-retardant oversheath, outer encirclement first is crusted flame retardant coating.
Further, it is preferable to ground, described shell also includes: the second crust flame retardant coating, is positioned at described fire-retardant
Between inner cushion layer and described fire-retardant oversheath, the fire-retardant inner cushion layer of outer encirclement, including Ceramic silicon rubber band,
One or more in ceramic polyolefin refractory matter and ceramic fireproof composite band, in the condition of high temperature
Under, form ceramic case, temperature is the highest, and the hardness of ceramic case is the biggest.
Described fire-resisting cable, wherein, described cable core is disposed with wire and mica layer from the inside to the outside.
Preferably, described cable core also includes ceramic polyolefin insulation layer, outer encirclement mica layer.
Preferably, described wire is by single or how constitute with not tinned copper wire.
According to another aspect of the present utility model, it is provided that a kind of fire-resisting cable includes multiple cable core and shell,
Wherein, each described cable core include strand system multiple wires, the mica tape of wrapped multiple wires and
It is wound with ceramic polyolefin insulation layer insulating exruded on the wire of mica tape；Shell, outer encirclement is multiple
Cable core, including around the Ceramic silicon rubber band wrapped on cable core, at the cable being surrounded with Ceramic silicon rubber band
The fire-retardant inner cushion layer extruded on core, another pottery SiClx wrapped on the cable core having extruded fire-retardant inner cushion layer
Rubber strip and the fire-retardant oversheath extruded on the cable core being surrounded with another Ceramic silicon rubber band.
Described fire-resisting cable, wherein, the multiple described wire of each described cable core is according to dextrad rule
Twisted together, faradic current during to eliminate fire-resisting cable three-phase operation and induced voltage.
Described fire-resisting cable, wherein, also includes: flame retardant filler, is filled in described shell with described
Between cable core, including asbestos, glass fibre and based on aluminium hydroxide or the mixing of magnesium hydroxide
One or more in thing.
It is provided with the first crust fire-resistant between fire-retardant oversheath and the cable core of fire-resisting cable described in the utility model
Layer, it reduces the generation of flame and spreads, playing cable core while forming ceramic case at high operating temperatures
The effect of thermal insulation oxygen barrier, improves the highest normal working temperature of fire-resisting cable and fire-resistant conduction time.
Accompanying drawing explanation
By with reference to detailed description below and the content of claims and combine accompanying drawing, this practicality
Other novel purpose and result will be more apparent and should be readily appreciated that.In the accompanying drawings:
Fig. 1 is the schematic diagram of prior art fire-resisting cable；
Fig. 2 is the schematic diagram of this utility model fire-resisting cable.
In the accompanying drawings, identical reference indicates similar or corresponding feature or function.
Detailed description of the invention
This utility model being expanded on further below in conjunction with specific embodiment, embodiments below is only used for lifting
Example illustrates this utility model, and protection domain of the present utility model is not restricted by the embodiments, listed
Material is consistent with the requirement of material noted earlier.
Fig. 2 is the schematic diagram of this utility model fire-resisting cable, as in figure 2 it is shown, described fire-resisting cable 200
Including:
Cable core 210, is disposed with wire 211 and mica layer 212, wherein, described wire from the inside to the outside
211 electric actions, described mica layer 212, when fire, is surrounding the other materials combustion of mica layer 212
After burnouting, as last insulating barrier, maintain beam conduction, it is preferable that described wire 211 is by single
Or many constitute with not tinned copper wire；
Shell 220, the described cable core of outer encirclement 210, it is disposed with the first crust flame retardant coating 221 from inside to outside
With fire-retardant oversheath 224, wherein,
First crust flame retardant coating 221, including Ceramic silicon rubber band, ceramic polyolefin refractory matter and pottery
Change one or more in fireproof composite band, under the condition of high temperature (such as 650 DEG C to 3000 DEG C), knot
Becoming ceramic case, temperature is the highest, and the hardness of ceramic case is the biggest；
Fire-retardant oversheath 224 is low-smoke halogen-free polyolefin material.
The refractory mechanism of above-mentioned fire-resisting cable 200 is as follows: when a fire, first flame touch
It is fire-retardant oversheath 224, prevents flame from producing and spreading, say, that fire-retardant oversheath 224 is at flame
Effect under will not burn, simply As time goes on can gradually drip, after its all drippage, fire
Flame is applied to the first crust flame retardant coating 221, and the first crust flame retardant coating 221 forms ceramic case at high operating temperatures,
Cable core 210 is played thermal insulation and oxygen barrier effect, flame is entered into cable core 210 and is further intercepted,
Improve the highest normal working temperature of fire-resisting cable 200 and fire-resistant conduction time.
In another embodiment of the present utility model, described fire-resisting cable 200 also includes fire-retardant inner cushion layer
222 and second crust flame retardant coating 223, wherein,
Fire-retardant inner cushion layer 222, outer encirclement first crusts flame retardant coating 221, for low-smoke halogen-free polyolefin material,
Prevent flame from producing and spreading when fire；
Second crust flame retardant coating 223, the fire-retardant inner cushion layer of outer encirclement 222, including Ceramic silicon rubber band, pottery
One or more in porcelain polyolefin refractory matter and ceramic fireproof composite band, at high operating temperatures,
Forming ceramic case, temperature is the highest, and the hardness of ceramic case is the biggest.
Preferably, described first crust flame retardant coating 221 and the second crust flame retardant coating 223 include at least two-layer
Ceramic silicon rubber band, ceramic polyolefin refractory matter and the ceramic fireproof that winding direction is contrary is multiple
One or more in crossed belt, it is possible to ensure to be formed complete ceramic case when the condition of high temperature.
The refractory mechanism of above-mentioned fire-resisting cable 200 is as follows: when a fire, first flame touch
Being fire-retardant oversheath 224, it will not burn under the effect of flame, simply As time goes on can be gradually
Drippage, after its all drippage, flame interaction to second crust flame retardant coating 223, the second crust flame retardant coating
223 form ceramic case at high operating temperatures, and as ground floor containment vessel, fire-retardant inner cushion layer 222 now plays
Heat-insulating, fire-preventing effect, the first crust flame retardant coating 221 that fire-retardant inner cushion layer 222 surrounds, tie at high operating temperatures
Become second layer containment vessel, cable core 210 is played thermal insulation and oxygen barrier effect, flame is entered into cable core 210
Further intercepted, further increased the highest normal working temperature of fire-resisting cable 200 and fire-resistant
Conduction time.
Described first crust flame retardant coating 221 and the second crust flame retardant coating 223 the most soft flexible,
Autohension, electrical insulating property and good airproof performance, in case of fire, rapidly by hard complete of Low fire ceramic shape
Whole shell, the i.e. first crust flame retardant coating 221 and the second crust flame retardant coating 223 form two-layer ceramic shell, with
The growth of ablation time, ceramic case is the hardest, and cable core 210 is played well protection by stiff shell armouring
Effect, improves the fire-resistant conduction time of cable core 210.
In above-described embodiment, described in state between the fire-retardant oversheath 224 of fire-resisting cable 200 and cable core 210
Including the folder being made up of the first crust flame retardant coating 221, fire-retardant inner cushion layer 222 and the second crust flame retardant coating 223
Layer, reduces the generation of flame while forming containment vessel and spreads, cable core 210 is played thermal insulation oxygen barrier
Effect.
In one alternate embodiment, cable core 210 also includes ceramic polyolefin insulation layer 213, outer encirclement
Mica layer 212, in case of fire, crusts fire-resistant, forms third layer containment vessel.
In one alternate embodiment, described fire-resisting cable 200 also includes: flame retardant filler 230, fills
Between shell 220 and cable core 210, including asbestos, glass fibre and with aluminium hydroxide or hydrogen-oxygen
Change one or more in the mixture that magnesium is main body, stop flame to produce when fire.
In an embodiment of the present utility model, fire-resisting cable 200 includes:
Multiple cable cores 210, each cable core 210 includes multiple wires 211 of strand system, wrapped multiple wires
The mica tape 212 of 211 and ceramic insulating exruded on the wire 211 be wound with mica tape 212 gather
Alkene insulating barrier 213, wire 211 is used for conducting electricity, and ensures wire 211 when fire-resistant isinglass belt 212 is fire
The last barrier of energising, ceramic polyolefin insulation layer 213 forms ceramic case, plays protection when fire
Shell and the effect of insulation；
Shell 220, the multiple cable core of outer encirclement 210, including around the Ceramic silicon rubber wrapped on cable core 210
The fire-retardant inner cushion layer 222 that extrudes with 221, on the cable core 210 be surrounded with Ceramic silicon rubber band 221,
Another Ceramic silicon rubber band 223 wrapped on the cable core 210 having extruded fire-retardant inner cushion layer 222 and
The fire-retardant oversheath 224 extruded on the cable core 210 be surrounded with another Ceramic silicon rubber band 223, wherein,
The Ceramic silicon rubber band 221 of wrapped cable core 210 and another pottery SiClx of wrapped fire-retardant inner cushion layer 222
Rubber strip 221 crusts fire-resistant when fire, and fire-retardant inner cushion layer 222 and fire-retardant oversheath 224 are used for preventing
Only flame produces and spreads；
Flame retardant filler 230, is filled between shell 220 and multiple cable core 210, stops when fire
Flame produces, wherein, flame retardant filler 230 include asbestos, glass fibre and with aluminium hydroxide or
Magnesium hydroxide is one or more in the mixture of main body.
Preferably, it is extruded with the plurality of wire of ceramic polyolefin insulation layer 213 211 to advise according to dextrad
Restrain twisted together, described twisted together between the vector of multiple wires 211 be zero, so
Phase contrast when three-phase electricity is run just will not produce induced voltage, thus when eliminating fire-resisting cable three-phase operation
Faradic current and induced voltage.
Use 2A fuse that existing cable 100 and fire-resisting cable described in the utility model 200 are carried out
Fire test, the highest normal working temperature of cable 100 is 90 DEG C, fire-resisting cable 200 the highest normally
Operating temperature is 135 DEG C, and the current-carrying capacity of fire-resisting cable 200 improves 20% relative to cable 100, at fire
Flame temperature is 950 DEG C, within the confession fire time of 180min, connects the 2A fuse blows of cable 100,
And connect the 2A fuse of fire-resisting cable 200 constantly, fire-resisting cable 200 described in the utility model is described
Fire-resistant conduction time can reach 180min.
Fire resistance period is carried by fire-resisting cable 200 described in the utility model by structure change and new material application
A height of 180min, makes be brought up to 180min by 90min the conduction time of cable during breaking out of fire, for rescue
Win the quality time with escape and have immeasurable social value, it addition, the characteristic of its fireproof high-temperature resistant,
The normal working temperature 70 DEG C or 90 DEG C making cable can bring up to 135 DEG C, and the current-carrying capacity of cable is identical
Can improve about 20% under cross section, therefore the cross section of fire-resisting cable 200 can reduce can save substantial amounts of
Copper material, the cable needs amount 11458.957 hundred million yuan in the whole nation as a example by 2013, it is assumed that copper core cable accounts for 50%
(actual share is bigger) its sales volume is 5729.48 hundred million yuan, and in copper core cable, copper accounts for its ratio
65%-75%, compromise is by 70% calculating, and the total value of copper is 5729.48*70%=4010.63 hundred million yuan,
Combined closure system improves 20%, and 8%-10% can be reduced in its cross section, calculates can use less by minimum 8%
The copper that 4010.63*8%=320.85 is hundred million yuan, the average copper valency of 2013 is 5.2 ten thousand/ton, if all using
This kind of fire-resisting cable, can save 320.85 hundred million yuan/5.2 ten thousand=617019 tons copper of copper material.From upper calculating,
Fire-resisting cable 200 described in the utility model can produce huge economic benefit, can avoid non-renewable money
The exhaustive exploitation of source copper, improves copper material utilization rate.
As it has been described above, embodiment of the present utility model has been described in detail, but as long as substantially do not have
There are disengaging utility model point of the present utility model and effect can have a lot of deformation, this skill to this area
It is apparent from for art personnel.Therefore, such variation is also contained in protection of the present utility model
Within the scope of.
Claims (9)
1. a fire-resisting cable, including cable core and shell, it is characterised in that
Described shell, the described cable core of outer encirclement, it is disposed with the first crust flame retardant coating and resistance from inside to outside
Combustion oversheath, wherein, described first crust flame retardant coating includes Ceramic silicon rubber band, ceramic polyolefin
One or more in refractory matter and ceramic fireproof composite band, at high operating temperatures, form pottery
Shell, temperature is the highest, and the hardness of ceramic case is the biggest.
Fire-resisting cable the most according to claim 1, it is characterised in that described shell also includes:
Fire-retardant inner cushion layer, crusts between flame retardant coating and described fire-retardant oversheath described first, outer encirclement
First crust flame retardant coating.
Fire-resisting cable the most according to claim 2, it is characterised in that described shell also includes:
Second crust flame retardant coating, between described fire-retardant inner cushion layer and described fire-retardant oversheath, outer encirclement
Described fire-retardant inner cushion layer, prevents fires including Ceramic silicon rubber band, ceramic polyolefin refractory matter and ceramic
One or more in fire-resistant composite band, at high operating temperatures, form ceramic case, and temperature is the highest, pottery
The hardness of shell is the biggest.
Fire-resisting cable the most according to claim 1, it is characterised in that described cable core depends on from the inside to the outside
Secondary it is provided with wire and mica layer.
Fire-resisting cable the most according to claim 4, it is characterised in that described cable core also includes ceramic
Polyolefin insulation layer, the described mica layer of outer encirclement.
Fire-resisting cable the most according to claim 4, it is characterised in that described wire by single or how with
Tinned copper wire is not constituted.
7. a fire-resisting cable, it is characterised in that include multiple cable core and shell, wherein,
Each described cable core includes multiple wires, the mica tape of wrapped multiple wires of strand system and is twining
It is wound with ceramic polyolefin insulation layer insulating exruded on the wire of mica tape；
Shell, the multiple cable core of outer encirclement, including around the Ceramic silicon rubber band wrapped on cable core, wrapped
There is on the cable core of Ceramic silicon rubber band the fire-retardant inner cushion layer extruded, at the cable core having extruded fire-retardant inner cushion layer
Go up another the most wrapped Ceramic silicon rubber band and squeeze on the cable core being surrounded with another Ceramic silicon rubber band
The fire-retardant oversheath of bag.
8. according to the fire-resisting cable according to any one of claim 4 to 7, it is characterised in that each institute
The multiple described wire stating cable core is twisted together according to the rule that dextrad is stranded, to eliminate fire-resisting cable three
Faradic current when running mutually and induced voltage.
9. according to the fire-resisting cable described in claim 1 or 7, it is characterised in that also include: flame resistant filler
Thing, is filled between described shell and described cable core, including asbestos, glass fibre and with hydroxide
One or more in aluminum or mixture that magnesium hydroxide is main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620300526.6U CN205582598U (en) | 2016-04-12 | 2016-04-12 | Fire -resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620300526.6U CN205582598U (en) | 2016-04-12 | 2016-04-12 | Fire -resistant cable |
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| Publication Number | Publication Date |
|---|---|
| CN205582598U true CN205582598U (en) | 2016-09-14 |
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ID=56864861
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620300526.6U Active CN205582598U (en) | 2016-04-12 | 2016-04-12 | Fire -resistant cable |
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| CN (1) | CN205582598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615587A (en) * | 2016-12-12 | 2018-10-02 | 扬州腾飞电缆电器材料有限公司 | A kind of manufacture craft of novel low-smoke halogen-free fire-resistant wrapping tape |
-
2016
- 2016-04-12 CN CN201620300526.6U patent/CN205582598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615587A (en) * | 2016-12-12 | 2018-10-02 | 扬州腾飞电缆电器材料有限公司 | A kind of manufacture craft of novel low-smoke halogen-free fire-resistant wrapping tape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Fire resistant cable Effective date of registration: 20220901 Granted publication date: 20160914 Pledgee: China Construction Bank Corporation Raoyang Sub-branch Pledgor: HEBEI DONGZHAO CABLE Co.,Ltd. Registration number: Y2022980014268 |