CN208459657U - A kind of flame-proof cable - Google Patents
A kind of flame-proof cable Download PDFInfo
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- CN208459657U CN208459657U CN201821235593.XU CN201821235593U CN208459657U CN 208459657 U CN208459657 U CN 208459657U CN 201821235593 U CN201821235593 U CN 201821235593U CN 208459657 U CN208459657 U CN 208459657U
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- optical cable
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Abstract
The utility model discloses a kind of flame-proof cables, from outside to inside successively include external sheath layer, external protection and optical cable core；External protection includes insulating and the fire resisting belt that is arranged in inside and outside insulating；Optical cable core is twisted by several optical cable tube cores; the center of optical cable core is equipped with FRP strengthening core; optical cable tube core successively includes inner protective layer, Loose tube layer, central core from outside to inside, and central core is equipped with several optical fiber, flexible water-blocking material is equipped between several optical fiber.The fire-resisting cable of the utility model is equipped with optical fiber loose tube, inner protective layer in the outside of optical fiber, and optical cable core is externally provided with external protection, inner protective layer and external protection and forms double shielding to optical fiber；Ceramic material in inner protective layer and external protection, which meets fire, can form ceramic tube body, and new support is formed to optical fiber, guarantee that the temperature of heated optical cable has heating and the cooling change procedure of mitigation when meeting fire, avoid optical fiber thermal shocking and crack, be broken.
Description
Technical field
The utility model relates to wire and cable optical communication field more particularly to a kind of flame-proof cables.
Background technique
With Optical Communication Technology Development, the laying of data center's highly dense, light velocity transmission and capacity increase, optic communication fire prevention
Ability and optic communication seem safely particularly important.
According to IEC60331-25 standard requirements, optical cable still needs to keep communication in 15 minutes after excessive fire.Existing cable interior
Optical fiber loose tube in organic matter heat fusing, condense to the cold, the cold and hot change dramatically of the optical fiber of excessive fire, optical fiber is in length direction
It stretches, the contracting sudden turn of events, optical fiber is caused crack occur or fracture；Optical fiber loose tube is volatilized by flame combustion, and bare fibre is not because supporting
Protection causes to be broken when being shaken by external force；And the nonmetallic materials in existing optical cable are generally extremely incendive polyolefine material,
There are good moisture-proof function, high and low temperature environment adaptable under normal operation, but material Heat liberation unit is huge after meeting fire, meeting
The temperature for aggravating the scene of a fire is promoted.
Utility model content
In view of the above-mentioned problems, the utility model aim is to provide a kind of flame-proof cable, to solve in the prior art ask
Topic.
To achieve the goals above, the technical solution of the utility model is as follows:
A kind of flame-proof cable, the flame-proof cable successively include external sheath layer, external protection and optical cable core from outside to inside；
The external protection includes insulating and the fire resisting belt that is arranged in inside and outside the insulating；
The optical cable core is twisted by several optical cable tube cores, and the center of the optical cable core is equipped with FRP strengthening core,
The optical cable tube core successively includes inner protective layer, Loose tube layer, central core from outside to inside, and the central core is equipped with several light
Fibre is equipped with flexible water-blocking material between several optical fiber.
A kind of preferred embodiment of the utility model is equipped with armor between the external sheath layer and external protection.
Another preferred embodiment of the utility model, the fire resisting belt, inner protective layer are ceramic tape.
Another preferred embodiment of the utility model, the fire resisting belt, inner protective layer are high silicon mica belt.
Another preferred embodiment of the utility model, the fire resisting belt, inner protective layer be can ceramic polyolefin layer.
Another preferred embodiment of the utility model, the insulating are the oxygen barrier bed of material of ceramic polyolefin.
The fire-resisting cable of the utility model is equipped with optical fiber loose tube, inner protective layer, optical cable core peripheral hardware in the outside of optical fiber
There are external protection, inner protective layer and external protection to form double shielding to optical fiber；Ceramic material in inner protective layer and external protection
Material, which meets fire, can form ceramic tube body, and new support is formed to optical fiber, guarantee that the temperature of heated optical cable has the liter of mitigation when meeting fire
Temperature and cooling change procedure, avoid optical fiber thermal shocking and crack, are broken.
Detailed description of the invention
Fig. 1 is the schematic cross-section of the utility model flame-proof cable；
Fig. 2 is the flow sheet of the utility model flame-proof cable.
Specific embodiment
In order to be apparent to the technological means and implementation of the utility model, combined with specific embodiments below further
Illustrate the utility model.
Referring to Fig. 1, the flame-proof cable of the utility model, flame-proof cable successively includes external sheath layer 10, armouring from outside to inside
Layer 20, external protection, optical cable core 40, armor 20 is arranged between external sheath layer 10 and external protection, can increase resistance to flame
The rigidity and intensity of cable.
The external sheath layer 10 is made of the material of low smoke and zero halogen, anti-flammability.
The external protection includes the fire resisting positioned at the insulating 32 of middle layer and positioned at 32 outside of insulating
Belt 31 and the fire resisting belt 31 on the inside of insulating 32.
The optical cable core 40 is twisted by several optical cable tube cores, and the center of optical cable core 40 is equipped with FRP, and (fiber increases
Strong composite plastic) material strengthening core 50, the optical cable tube core from outside to inside successively include inner protective layer 61, Loose tube layer 62,
Central core, the central core are equipped with several optical fiber 63, are filled with water-blocking material 64 flexible between several optical fiber 63.It is soft
Property water-blocking material 64 have a stabilization to optical fiber 63, and while meeting fire, is decomposed into half loose flexible filler, the non-combustible fibre at center
Dimension still keeps elasticity, still has supporting role to optical fiber.
In the utility model, the fire resisting belt 31, inner protective layer 61 are ceramic tape；Or it is the fire resisting belt 31, interior
Protective layer 61 is high silicon mica belt；Or the fire resisting belt 31, inner protective layer 61 be can ceramic polyolefin layer.Ceramic tape
Or the thickness of high silicon mica tape is generally 1.4mm-2.0mm, can the thickness of ceramic polyolefin layer be generally 0.8-1.5mm, have
Body is determined according to the diameter of optical cable.External protection and inner protective layer 61 form two layers of protection to optical cable, meet ceramics therein when fire
Powder can form ceramic tube body, and new support is formed to optical cable.
In the utility model, insulating 32 is insulating made of the oxygen barrier material of ceramic polyolefin, when heat
Ceramic material therein can also form ceramic tube body.
The flame-proof cable of the utility model, in the outside extrusion molding optical fiber loose tube of optical fiber when production；Extruding again can ceramic
Polyolefin or wrapped ceramic band, high silicon mica tape form optical cable tube core；Several optical cable tube cores are formed into optical cable through SZ is twisted again
Cable core；Then extruded on the outside of optical cable core can ceramic polyolefin finally extruded outer in wrapped ceramic band or high silicon mica tape
Restrictive coating.
The advantages of main feature, working method and the utility model of the utility model has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.
Claims (6)
1. a kind of flame-proof cable, it is characterised in that: the flame-proof cable successively includes external sheath layer (10), outer protection from outside to inside
Layer and optical cable core (40)；
The external protection includes the fire resisting belt of insulating (32) and setting inside and outside the insulating (32)
(31)；
The optical cable core (40) is twisted by several optical cable tube cores, and the center of the optical cable core (40) adds equipped with FRP
Strong core (50), the optical cable tube core successively include inner protective layer (61), Loose tube layer (62), central core from outside to inside, it is described in
Central layer is equipped with several optical fiber (63), and flexible water-blocking material (64) is equipped between several optical fiber (63).
2. flame-proof cable according to claim 1, it is characterised in that: be equipped between the external sheath layer (10) and external protection
Armor (20).
3. flame-proof cable according to claim 1 or claim 2, it is characterised in that: the fire resisting belt (31), inner protective layer (61) are
Ceramic tape.
4. flame-proof cable according to claim 1 or claim 2, it is characterised in that: the fire resisting belt (31), inner protective layer (61) are
High silicon mica belt.
5. flame-proof cable according to claim 1 or claim 2, it is characterised in that: the fire resisting belt (31), inner protective layer (61) are
It can ceramic polyolefin layer.
6. flame-proof cable according to claim 1 or claim 2, it is characterised in that: the insulating (32) is ceramic polyene
The oxygen barrier bed of material of hydrocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821235593.XU CN208459657U (en) | 2018-08-02 | 2018-08-02 | A kind of flame-proof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821235593.XU CN208459657U (en) | 2018-08-02 | 2018-08-02 | A kind of flame-proof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208459657U true CN208459657U (en) | 2019-02-01 |
Family
ID=65179113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821235593.XU Active CN208459657U (en) | 2018-08-02 | 2018-08-02 | A kind of flame-proof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208459657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534380A (en) * | 2021-07-12 | 2021-10-22 | 江苏中天科技股份有限公司 | Polyolefin sheath, preparation method thereof and fire-resistant nonmetal optical fiber ribbon cable |
-
2018
- 2018-08-02 CN CN201821235593.XU patent/CN208459657U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534380A (en) * | 2021-07-12 | 2021-10-22 | 江苏中天科技股份有限公司 | Polyolefin sheath, preparation method thereof and fire-resistant nonmetal optical fiber ribbon cable |
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