CN201156102Y - Fire resistant optical cable - Google Patents
Fire resistant optical cable Download PDFInfo
- Publication number
- CN201156102Y CN201156102Y CNU2008200922447U CN200820092244U CN201156102Y CN 201156102 Y CN201156102 Y CN 201156102Y CN U2008200922447 U CNU2008200922447 U CN U2008200922447U CN 200820092244 U CN200820092244 U CN 200820092244U CN 201156102 Y CN201156102 Y CN 201156102Y
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- sheath
- cable
- flame
- optical cable
- cable core
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Abstract
The utility model discloses a fireproof optical cable, which can be used in a metropolitan area network. The fireproof optical cable, which has a high fiber core density, comprises a sheath and a cable core, and wherein, the sheath, which wraps the cable core, consists of an outer sheath, a metal strip and an inner sheath which are arranged orderly from outside to inside. The fireproof optical cable has the following advantages: because the sheath is divided into the outer sheath and the inner sheath and a layer of metal strip is added between the outer sheath and the inner sheath, which are made of fire-retardant material, in extreme cases, if the outer sheath is burnt out by fire, the inner sheath can still be preserved by the enhanced protection of the metal strip, thus protecting fiber cores from being damaged.
Description
Technical field
The utility model relates to a kind of optical cable, particularly a kind of flame-proof cable that is used for Metropolitan Area Network (MAN), Access Network.
Background technology
Along with the arrival of information age, the conveying capacity of information becomes explosion type ground to increase.As the effective means of high capacity, long Distance Transmission, optical fiber cable has obtained a large amount of application.The application of optical cable is also developed to Metropolitan Area Network (MAN), Access Network direction by long distance line gradually.The development of industry is promoting development of technology, and new cable configuration is constantly released, and new technology constantly is applied.The micro optical cable technology is developed according to the demand of user and market development, is applied to the communication line of Metropolitan Area Network (MAN), Access Network.The appearance of micro optical cable is for the problem that solves restriction cable network benign developments such as present cost of investment height, utilization factor be low and a kind of new product of developing, it can reduce initial outlay, again can be along with the growth of customer demand, take big strides to invest, existing conduit resource is repeated utilization, the increase capacity, value-added service.Optical cable in the market is conventional central tubular optical fibre band optical cable, general structure is: cable core is made up of pipe core parcel optical fiber, at cable core outer wrapping one deck sheath, what have also has steel band or aluminium strip armouring between pipe core and sheath, sheath is generally made by plastics or other waterproof, fire prevention, smokeless material, such optical cable bore is little, be adapted at using in Metropolitan Area Network (MAN) and the Access Network, but this optical cable fire performance can not reach the standard of relevant buildings prescribed material.In urban network is from now on built, because optical cable will more and more be used for the space of relative closure, as occasions such as subway, tunnel, hospital, oil depot, stadiums; Meet with accident such as when on fire, must consider its influence when guaranteeing the optical cable transmission performance, so the fire resistance of optical cable and fire performance must be subjected to more attention surrounding environment and the person and device security.
Summary of the invention
In order to overcome the above problems, the utility model provides a kind of flame-proof cable, and this optical cable has very high performance.
The utility model is that the technical scheme that its technical matters of solution is adopted is: a kind of flame-proof cable, comprise sheath and cable core, and sheath parcel cable core, sheath comprises outer protective sleeve, steel band and the internal layer sheath that is arranged in order from outside to inside here.
The beneficial effects of the utility model are: because sheath is divided into outer protective sleeve and internal layer sheath, and between inside and outside layer sheath, increase one deck steel band, and inside and outside layer sheath made by fire proofing, if outer protective sleeve is by copying of fire under extreme case.Because the protection of steel band is arranged, and the internal layer sheath gets off preservation, the protection fibre core is without prejudice.
As a kind of improvement of the present utility model, in the internal layer sheath, be provided with the steel wire that is parallel to each other vertically symmetrically, can make the optical fiber cables cable have stronger intensity like this, can well protect optical fiber in the optical cable construction process or when using.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is the utility model embodiment one cross sectional view.
Fig. 2 is the utility model embodiment two cross sectional view.
Among the figure: 1, cable core, 11, optical fiber, 12, fine ointment, 13, the cable core sheath, 2, sheath, 21, the internal layer sheath, 22, steel band, 23, outer protective sleeve, 24, steel wire.
Embodiment:
Figure 1 shows that the cross sectional view of embodiment one of the present utility model, this optical cable comprises sheath 2 and cable core 1, sheath 2 parcel cable cores 1, and sheath 2 comprises outer protective sleeve 23, steel band 22 and the internal layer sheath 21 that is arranged in order from outside to inside here.Internal layer sheath 21 and outer protective sleeve 23 are to be the poly-hydrocarbon electrical materials and appliances of 90 ℃ of thermoplastic low-smoke halide-frees of SR-3211 type by the model that Shanghai Sirui PolymerTechnology Co., Ltd. produces, and fire performance is good.In order to increase the intensity of optical fiber, in internal layer sheath 21, be provided with the steel wire 24 that is parallel to each other vertically symmetrically, in order further to strengthen the intensity of optical cable, steel wire quantity can increase, also can be with other high-intensity tinsel.This optical cable is the central beam tube type flame-proof cable, the cable core sheath 13 of center beam tube for making by metal tube, here in order to strengthen the intensity of center beam tube, cable core sheath 13 is selected gapless stainless steel tube for use, because gapless stainless steel tube has stronger intensity, therefore generally speaking, in internal layer sheath 21, can not need steel wire.Optical fiber 11 is placed in the stainless-steel tube, fills full fine ointment 12 in the gap of stainless-steel tube inner fiber 11.
Optical cable in present embodiment is installed in the space of relative closure, as occasions such as subway, tunnel, hospital, oil depot, stadiums; Meet with accident such as when on fire; even baking for a long time in fire; the outer protective sleeve of optical cable is owing to be to be that the poly-hydrocarbon electrical materials and appliances of 90 ℃ of thermoplastic low-smoke halide-frees of SR-3211 type are made by the model that Shanghai Sirui PolymerTechnology Co., Ltd. produces; can not give out toxic gas; in addition because steel belt protection is arranged; the internal layer sheath can not be affected, and can guarantee the person and device security.
Fig. 2 is the cross sectional view of the utility model embodiment two, optical cable shown in this optical cable and the embodiment one is basic identical, and the model that its sheath 2 is also produced by Shanghai Sirui PolymerTechnology Co., Ltd. is that the internal layer sheath 21 made of the poly-hydrocarbon electrical materials and appliances of 90 ℃ of thermoplastic low-smoke halide-frees of SR-3211 type and the steel band 22 between outer protective sleeve 23 and the ectonexine sheath are formed.Also be the cable core sheath 13 double center beam tubes that utilize stainless-steel tube to make, fine ointment 12 is also arranged in cable core sheath 13, different is that with all optical fiber 11 usefulness fibre ribbon matrixes replacements that are placed in the stainless-steel tube, the fibre ribbon matrix is by four stranded forming of fibre ribbon fibre ribbon.In every fibre ribbon 6 optical fiber are arranged in the illustrated embodiment, 24 optical fiber are just arranged in this root optical cable.Certainly as required, fibre ribbon also can comprise more optical fiber, and the fibre ribbon of greater number also can be arranged in the whole fibre ribbon matrix, can make like this in the flame-proof cable and hold more optical fiber quantity.According to standard, no matter the diameter of an optical fiber is a multimode optical fiber is not that single fiber all is 250 microns, the diameter of optical cable 10 millimeters with interior can be micro optical cable, so the miniature flame-proof cable of central beam tube type utilizes the fibre ribbon matrix to do transmission medium can to accomplish more core number.
Claims (6)
1. a flame-proof cable comprises sheath (2) and cable core (1), sheath (2) parcel cable core (1), and it is characterized in that: described sheath (2) comprises outer protective sleeve (23), steel band (22) and the internal layer sheath (21) that is arranged in order from outside to inside.
2. flame-proof cable according to claim 1 is characterized in that: be provided with the steel wire (24) that is parallel to each other in described internal layer sheath (21) vertically symmetrically.
3. flame-proof cable according to claim 1, it is characterized in that: described cable core (1) comprises the cable core sheath of being made by metal tube (13), the optical fiber of placing in the cable core sheath (13) (11) and be filled in fine ointment (12) between the gap of cable core sheath inner fiber.
4. flame-proof cable according to claim 3 is characterized in that: described metal tube is a stainless-steel tube.
5. flame-proof cable according to claim 4 is characterized in that, described optical fiber (11) is fibre ribbon.
6. flame-proof cable according to claim 5 is characterized in that: described fibre ribbon is the fibre ribbon matrix, and the fibre ribbon matrix forms by several fibre ribbons are stranded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200922447U CN201156102Y (en) | 2008-02-02 | 2008-02-02 | Fire resistant optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200922447U CN201156102Y (en) | 2008-02-02 | 2008-02-02 | Fire resistant optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156102Y true CN201156102Y (en) | 2008-11-26 |
Family
ID=40103882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200922447U Expired - Fee Related CN201156102Y (en) | 2008-02-02 | 2008-02-02 | Fire resistant optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156102Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798951A (en) * | 2012-08-14 | 2012-11-28 | 江苏通鼎光电股份有限公司 | Special fireproofing optical cable for metro |
| CN103412379A (en) * | 2013-07-29 | 2013-11-27 | 成都亨通光通信有限公司 | Novel fire-resistant optical cable |
-
2008
- 2008-02-02 CN CNU2008200922447U patent/CN201156102Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798951A (en) * | 2012-08-14 | 2012-11-28 | 江苏通鼎光电股份有限公司 | Special fireproofing optical cable for metro |
| CN103412379A (en) * | 2013-07-29 | 2013-11-27 | 成都亨通光通信有限公司 | Novel fire-resistant optical cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20160202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |