CN207250168U - A kind of high bending ceramic cable - Google Patents
A kind of high bending ceramic cable Download PDFInfo
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- CN207250168U CN207250168U CN201720981552.4U CN201720981552U CN207250168U CN 207250168 U CN207250168 U CN 207250168U CN 201720981552 U CN201720981552 U CN 201720981552U CN 207250168 U CN207250168 U CN 207250168U
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Abstract
The utility model discloses a kind of high bending ceramic cable, the cable stock is followed successively by from outside to inside, low smoke and zero halogen external sheath layer, steel-tape armouring layer, outer fiber belting layer, the Tao Kai ceramic fire-resistant polyolefin oxygen barriers bed of material, high oxygen index (OI) oxygen barrier layer, interior fiber belting layer, alkali-free glass fiber dimension yarn filled layer and cable core；The cable core is three, and three cable cores are tieed up yarn filled layer by alkali-free glass fiber and isolated；The Tao Kai ceramics fire-resistant polyolefin oxygen barrier bed of material outer surface opens up threaded notch, ceramic cable in the utility model has good fire resistance, and by opening up threaded notch in Tao Kai ceramic fire-resistant polyolefin oxygen barrier bed of materials outer surface, so that ceramic cable bend performance boost, relative to existing ceramic cable, curvature can improve 36 °, be more favorable for connecting up, suitable for wider array of working environment.
Description
Technical field
It the utility model is related to power cable technical field, more particularly to a kind of high bending ceramic cable.
Background technology
Fire resisting cable refers to the cable that certain time safe operation can be kept in the case of flame combustion.Country of China mark
Fire resistance test is divided to A, B two kinds of ranks by quasi- GB12666.6, A grades of 950~1000 DEG C of flame temperatures, is continued for fiery time 90min, B
750~800 DEG C of flame temperature of level, continues for fiery time 90min, during whole experiment, sample should bear specified as defined in product
Magnitude of voltage.Ceramic cable is widely used in skyscraper, underground railway, undergrond street, large-scale power station and important industrial and mining enterprises
Deng the place related with fire safety and fire-extinguishing and lifesaving.Cable fire resistance is improved for ensureing public place fire safety to pass
It is important.When improving cable fire resistance, cable thickness and hardness increase are often resulted in so that cable is difficult to cut.
Utility model content
To solve in the prior art, cable fire resistance is poor and is not easy the technical problem cut, the technology of the utility model
Scheme is as follows：
A kind of high bending ceramic cable in the utility model, including, cable stock, the cable stock is by outside extremely
Inside it is followed successively by, low smoke and zero halogen external sheath layer, steel-tape armouring layer, outer fiber belting layer, Tao Kai ceramic fire-resistant polyolefin oxygen barrier material
Layer, high oxygen index (OI) oxygen barrier layer, interior fiber belting layer, alkali-free glass fiber dimension yarn filled layer and cable core；The cable core is three
Root, three cable cores are tieed up yarn filled layer by alkali-free glass fiber and are isolated；The Tao Kai ceramics fire-resistant polyolefin oxygen barrier material
Layer outer surface opens up threaded notch.
Wherein, V-shaped groove is radially opened up along the cable stock, Tao Kai ceramic polyolefin is filled in the V-shaped groove
Form V-type ring.
Wherein, the V-shaped groove is multigroup.
Wherein, the V-type ring opens up some stomatas.
Wherein, the cable core include steel band shielded layer, external shielding layer, crosslinked polyetylene insulated layer, internal shield and
Conductor.
Wherein, the slot bottom of the V-shaped groove is located at the Tao Kai ceramic fire-resistant polyolefin oxygen barrier bed of materials.
Wherein, the oxygen index (OI) of the high oxygen index (OI) oxygen barrier layer is more than 38, thickness 2-4mm.
Wherein, the thickness 5.5-6.5mm of the Tao Kai ceramics fire-resistant polyolefin oxygen barrier bed of material.
Ceramic cable in the utility model, compared with prior art, its advantage is：
Ceramic cable in the utility model has good fire resistance, and by gathering in Tao Kai ceramic fire resistings
Alkene oxygen barrier bed of material outer surface opens up threaded notch so that and fire resisting cable bending property is lifted, relative to existing ceramic cable,
Curvature can improve 3-6 °, be more favorable for connecting up, suitable for wider array of working environment.
Brief description of the drawings
Fig. 1 is the structure diagram of high bending ceramic cable in the utility model；
Fig. 2 is the A-A direction views of Fig. 1；
Fig. 3 is the structure diagram of the Tao Kai ceramic fire-resistant polyolefin oxygen barrier bed of materials of the utility model.
Embodiment
Below in conjunction with the attached drawing of the utility model, the technical solution of the utility model is clearly and completely described.
Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
As shown in Figs. 1-3, a kind of high bending ceramic cable, cable stock is followed successively by from outside to inside, outside low smoke and zero halogen
Restrictive coating 1, steel-tape armouring layer 2, outer fiber belting layer 3, the Tao Kai ceramic fire-resistant polyolefin oxygen barriers bed of material 4, high oxygen index (OI) oxygen barrier
Layer 5, interior fiber belting layer 6, alkali-free glass fiber dimension yarn filled layer 7 and cable core, cable core include steel band shielded layer 8, external screen
Cover layer 9, crosslinked polyetylene insulated layer 10, internal shield 11 and conductor 12.The cable core is three, three cable cores
Body is tieed up yarn filled layer 7 by alkali-free glass fiber and is isolated.4 outer surface of the Tao Kai ceramic fire-resistant polyolefin oxygen barriers bed of material opens up screw thread and cuts
Mouthful.So that in the case where ensureing fire resistance, cable bending degree is improved.By opening up threaded notch so that ceramic cable Integral bending
Degree of wearing improves 3-6 ° relative to existing ceramic cable, is more favorable for connecting up, suitable for wider array of working environment.
The oxygen index (OI) of high oxygen index (OI) oxygen barrier layer 5 is more than 38, and the thickness of high oxygen index (OI) oxygen barrier layer 5 is 2-4mm.Tao Kai ceramics
The thickness 5.5-6.5mm of the fire-resistant polyolefin oxygen barrier bed of material 4.Ceramic refers in high molecular polymer, such as plastics, rubber and thermoplastic
Property elastomer, add functional material, in the case of the aerobic or anaerobic more than 300 DEG C, sinter adamantine ceramics into
Shape inorganic matter housing supporter.Fire resisting is to be amenable to that high temperature or high temperature resistance must be lived, that is, meets standard within the regular hour
The ability of stability, integrality thermal insulation and other expectation functions specified in fire resistance test；Oxygen index (OI) (OI) is in regulation bar
Under part, sample maintains to stablize the minimum oxygen concentration needed for burning (having flame combustion) in N2 and O2 mixed airflows.It is to weigh
High polymer combustibility；But combustibility is weighed nor absolute with oxygen index (OI), if the oxygen index (OI) of polyethylene is 17.4,
The oxygen index (OI) of polystyrene is 18.1, and in contrast, polyethylene should be than polystyrene more easy firing, but actually polystyrene
What is burnt is more violent, because polystyrene flame transmission speed is more fast again than polyethylene.This is because the specific heat of polystyrene
Hold and decomposition temperature is relatively low caused.In addition to oxygen index (OI), specific heat capacity, thermal conductivity, fusing point, decomposition temperature and the ignition of high polymer
Temperature, flame propagation velocity, surface burning velocity also all reflect the combustibility of high polymer；Oxygen index (OI) is that having the feelings of flame
To a characterization of high polymer combustibility, the fireproof oxygen-separation layer of middle pressure fire resisting and the insulating refractory of low-voltage cable, base under condition
It is in the case of nonflame, anaerobic on this；For Tao Kai ceramics fire-resistant polyolefin in the case of nonflame, anaerobic, temperature reaches 300
Start slowly to crust more than DEG C, temperature continues to raise, crust speed accelerate with the ramp-up rate of temperature, formed ceramic without
Casing body supporter.Most important middle pressure fire-resisting cable design is also a bit the most key, seeks to accomplish to crosslinked polyethylene
Insulating layer carries out temperature protection, protects crosslinked polyetylene insulated layer in loading 10KV, 950~1000 DEG C × 90~180min of flame
Under conditions of, internal crosslinked polyetylene insulated layer does not melt, and does not soften, and when off-test is delivered to crosslinked polyetylene insulated layer
Temperature will be less than 160-180 DEG C, can so make it that crosslinked polyetylene insulated layer is protected well.Cable stock exists
The common cooperation of above-mentioned sandwich construction, progressively under absorbing and cooling temperature and insulation, ensure that the temperature of crosslinked polyetylene insulated layer is less than
160-180 DEG C of requirement.The alkali-free glass fiber yarn main component of alkali-free glass fiber yarn filled layer is silica, is a kind of highly stable
Inorganic material, nontoxic, heat resisting temperature will not produce harmful flue gas up to more than 650-1000 DEG C after heated；Alkali-free
The section of glass fibre yarn is cylindrical, has gap between every yarn after filling stranding, forms passage, this passage can play very well
Cooling effect, heat caused by cable normal operation can pass through these various passages and alkali-free glass fiber yarn sheet
Body radiates；The heat that exterior conductive is come in during fire can also be conducted by these passages and glass fibre yarn.Interior fiber
Belting layer and outer fiber belting layer carry out fire resisting guarantor also due to its excellent heat conduction, heat dissipation and heat-resisting new energy to cable stock
Shield.In order to ensure cable cut convenience, and cause section fire resistance it is stronger, along cable stock every 30m radially open up it is more
Group V-shaped groove, the interior filling Tao Kai ceramics polyolefin of V-shaped groove form V-type ring 13.V-shaped groove when opening up, V-shaped groove
Slot bottom is located in the Tao Kai ceramic fire-resistant polyolefin oxygen barriers bed of material 4.The use of time, cutting V-shaped ring 13, you can smoothly to cable
Cut.And cut surface by the V-type ring 13 that Tao Kai ceramic polyolefin is formed to Tao Kai ceramic fire-resistant polyolefin oxygen barrier material
Layer 4 has bond strength preferably, and low smoke and zero halogen external sheath layer 1, steel-tape armouring layer 2 and outer fiber belting layer 3 are protected
Shield.
In a kind of optional embodiment, the V-type ring opens up some stomatas.It is more favorable for radiating.Stomata opens up direction
To be parallel with diametric(al).
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (6)
1. a kind of high bending ceramic cable, including, cable stock, it is characterised in that the cable stock from outside to inside according to
It is secondary to be, low smoke and zero halogen external sheath layer, steel-tape armouring layer, outer fiber belting layer, the Tao Kai ceramic fire-resistant polyolefin oxygen barriers bed of material, height
Oxygen index (OI) oxygen barrier layer, interior fiber belting layer, alkali-free glass fiber dimension yarn filled layer and cable core；The cable core be three, three
Cable core described in root is tieed up yarn filled layer by alkali-free glass fiber and is isolated；The Tao Kai ceramics fire-resistant polyolefin oxygen barrier bed of material appearance
Face opens up threaded notch；
V-shaped groove is radially opened up along the cable stock, filling Tao Kai ceramics polyolefin forms V-type ring in the V-shaped groove；
The V-shaped groove is multigroup；Between two adjacent groups V-shaped groove at intervals of 30m.
2. a kind of high bending ceramic cable according to claim 1, it is characterised in that the V-type ring opens up some
Stomata.
3. a kind of high bending ceramic cable according to claim 2, it is characterised in that the cable core includes steel
Band shielded layer, external shielding layer, crosslinked polyetylene insulated layer, internal shield and conductor.
A kind of 4. high bending ceramic cable according to claim 3, it is characterised in that the slot bottom of the V-shaped groove
Positioned at the Tao Kai ceramic fire-resistant polyolefin oxygen barrier bed of materials.
A kind of 5. high bending ceramic cable according to claim 4, it is characterised in that the high oxygen index (OI) oxygen barrier layer
Oxygen index (OI) be more than 38, thickness 2-4mm.
A kind of 6. high bending ceramic cable according to claim 5, it is characterised in that the Tao Kai ceramics fire resisting
The thickness 5.5-6.5mm of the polyolefin oxygen barrier bed of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720981552.4U CN207250168U (en) | 2017-08-07 | 2017-08-07 | A kind of high bending ceramic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720981552.4U CN207250168U (en) | 2017-08-07 | 2017-08-07 | A kind of high bending ceramic cable |
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| Publication Number | Publication Date |
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| CN207250168U true CN207250168U (en) | 2018-04-17 |
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| CN201720981552.4U Active CN207250168U (en) | 2017-08-07 | 2017-08-07 | A kind of high bending ceramic cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578512A (en) * | 2019-09-27 | 2021-03-30 | 通鼎互联信息股份有限公司 | Fire-resistant communication optical cable |
| CN114188078A (en) * | 2021-12-09 | 2022-03-15 | 安庆横电电缆有限公司 | Halogen-free oxygen-insulating fireproof power cable, manufacturing process and soaking testing mechanism |
-
2017
- 2017-08-07 CN CN201720981552.4U patent/CN207250168U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578512A (en) * | 2019-09-27 | 2021-03-30 | 通鼎互联信息股份有限公司 | Fire-resistant communication optical cable |
| CN114188078A (en) * | 2021-12-09 | 2022-03-15 | 安庆横电电缆有限公司 | Halogen-free oxygen-insulating fireproof power cable, manufacturing process and soaking testing mechanism |
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