CN216052317U - High-temperature-resistant flame-retardant optical cable - Google Patents
High-temperature-resistant flame-retardant optical cable Download PDFInfo
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- CN216052317U CN216052317U CN202121772445.3U CN202121772445U CN216052317U CN 216052317 U CN216052317 U CN 216052317U CN 202121772445 U CN202121772445 U CN 202121772445U CN 216052317 U CN216052317 U CN 216052317U
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Abstract
The utility model relates to the technical field of optical cables, in particular to a high-temperature-resistant flame-retardant optical cable. The cable comprises a cable core, be provided with interior sheath outside the cable core, interior sheath wraps up high temperature resistant composite bed, fire-retardant layer, oversheath in proper order outward, the high temperature resistant composite bed is by interior mica tape layer, silica aerogel flexible film insulating layer, ceramic silicon rubber flame retardant coating of including outside to, a plurality of through-holes have evenly been seted up to fire-retardant layer circumference, it has magnesium hydrate inorganic flame retardant to fill in the through-hole. The high temperature resistance and the flame retardant property of the optical cable are improved.
Description
Technical Field
The utility model relates to the technical field of optical cables, in particular to a high-temperature-resistant flame-retardant optical cable.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers according to a certain mode to form a cable core, is coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission.
The common optical cable in the market at present has the advantages of simple structure, poor high-temperature resistance and flame retardance, easy combustion and incapability of meeting the use requirement. Therefore, how to improve the high temperature resistance and flame retardant property of the optical cable is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a high temperature resistant flame retardant optical cable to solve the above problems of the background art.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a high temperature resistant fire resistance optical cable, includes the cable core, the cable core is provided with interior sheath outward, interior sheath wraps up in proper order outward has high temperature resistant composite bed, fire-retardant layer, oversheath, the high temperature resistant composite bed is by interior mica tape layer, silica aerogel flexible film insulating layer, ceramic silicon rubber flame retardant coating outward, a plurality of through-holes have evenly been seted up to fire-retardant layer circumference, it has magnesium hydrate inorganic flame retardant to fill in the through-hole.
The cable core comprises a central reinforcing piece, optical fibers are uniformly arranged on the periphery of the central reinforcing piece, a heat insulation layer wraps the optical fibers, and alkali-free glass fibers are filled between the heat insulation layer and the inner protection layer.
The heat insulation layer adopts a glass fiber braided layer.
The outer jacket is coated with a refractory coating.
The flame-retardant layer is a halogen-free low-smoke flame-retardant polyolefin layer.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the high-temperature-resistant composite layer, the flame-retardant layer and the outer sheath are adopted, the high-temperature-resistant composite layer comprises a mica tape layer, a silica aerogel flexible film heat-insulating layer and a ceramic silicon rubber flame-retardant layer from inside to outside, a plurality of through holes are uniformly formed in the circumferential direction of the flame-retardant layer, and the through holes are filled with the magnesium hydroxide inorganic flame retardant, so that the high-temperature resistance and the flame-retardant property of the optical cable are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural view of the present invention.
In the figure: the cable comprises a cable core 1, a central reinforcing member 11, optical fibers 12, a thermal insulation layer 13, an inner protection layer 2, a high-temperature-resistant composite layer 3, a mica tape layer 31, a silica aerogel flexible film thermal insulation layer 32, a ceramic silicon rubber fire-resistant layer 33, a flame-retardant layer 4, a through hole 41 and an outer protection sleeve 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention provides a technical solution: a high-temperature-resistant flame-retardant optical cable comprises a cable core 1, an inner protection layer 2 is arranged outside the cable core 1, a high-temperature-resistant composite layer 3, a flame-retardant layer 4 and an outer sheath 5 are sequentially wrapped outside the inner protection layer 2, the high-temperature-resistant composite layer 3 comprises a mica tape layer 31, a silica aerogel flexible film heat-insulating layer 32 and a ceramic silicon rubber flame-retardant layer 33 from inside to outside, the mica tape layer 31 improves the strength and the flame-retardant capability of the optical cable, the silica aerogel flexible film heat-insulating layer 32 has excellent heat-insulating property and prevents heat from being transferred to the cable core, the cable core cannot be damaged by the heat transferred to the cable core after being burnt for a long time, and the ceramic silicon rubber flame-retardant layer 33 is used in case of fire, because of being burnt by high temperature and gradually becoming hard, a protective hard shell is formed to prevent flame and simultaneously prevent the high temperature from being transferred to the cable core 1, a plurality of through holes 41 are uniformly formed in the circumferential direction of the flame-retardant layer 4, and the through holes 41 are filled with the magnesium hydroxide inorganic flame retardant.
Example two
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a high temperature resistant fire resistance optical cable, includes cable core 1, cable core 1 is provided with interior sheath 2 outward, interior sheath 2 wraps up in proper order outward has high temperature resistant composite bed 3, fire-retardant layer 4, oversheath 5, high temperature resistant composite bed 3 is by interior mica tape layer 31, silica aerogel flexible film insulating layer 32, ceramic silicon rubber flame retardant coating 33 outside to, a plurality of through-holes 41 have evenly been seted up to 4 circumference on fire-retardant layer, it has the inorganic fire retardant of magnesium hydrate to fill in the through-hole 41.
The cable core 1 comprises a central reinforcing part 11, optical fibers 12 are uniformly arranged on the periphery of the central reinforcing part 11, a heat insulation layer 13 is wrapped outside the optical fibers 12, and alkali-free glass fibers are filled between the heat insulation layer 13 and the inner protection layer 2.
The thermal insulation layer 13 adopts a glass fiber braided layer, so that the thermal insulation performance is improved, and the high temperature resistance of the optical fiber is enhanced.
The outer sheath 5 is coated with a fire-resistant coating, so that the fire resistance of the optical cable is improved.
The flame-retardant layer 4 is a halogen-free low-smoke flame-retardant polyolefin layer.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a high temperature resistant fire resistance optical cable, includes cable core (1), its characterized in that: the cable core (1) is provided with interior sheath (2) outward, interior sheath (2) wraps up in proper order has high temperature resistant composite bed (3), fire-retardant layer (4), oversheath (5), high temperature resistant composite bed (3) are by interior mica tape layer (31), silica aerogel flexible film insulating layer (32), ceramic silicon rubber flame retardant coating (33) to outer, a plurality of through-holes (41) have evenly been seted up to fire-retardant layer (4) circumference, it has the inorganic fire retardant of magnesium hydrate to fill in through-hole (41).
2. The high temperature resistant flame retardant optical cable according to claim 1, wherein: the cable core (1) comprises a central reinforcing piece (11), optical fibers (12) are uniformly arranged on the periphery of the central reinforcing piece (11), a heat insulation layer (13) is wrapped outside the optical fibers (12), and alkali-free glass fibers are filled between the heat insulation layer (13) and the inner protection layer (2).
3. The high temperature resistant flame retardant optical cable according to claim 2, wherein: the heat insulation layer (13) is a glass fiber braided layer.
4. The high temperature resistant flame retardant optical cable according to claim 1, wherein: the outer sheath (5) is coated with a refractory coating.
5. The high temperature resistant flame retardant optical cable according to claim 1, wherein: the flame-retardant layer (4) is a halogen-free low-smoke flame-retardant polyolefin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772445.3U CN216052317U (en) | 2021-07-30 | 2021-07-30 | High-temperature-resistant flame-retardant optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772445.3U CN216052317U (en) | 2021-07-30 | 2021-07-30 | High-temperature-resistant flame-retardant optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216052317U true CN216052317U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121772445.3U Active CN216052317U (en) | 2021-07-30 | 2021-07-30 | High-temperature-resistant flame-retardant optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216052317U (en) |
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2021
- 2021-07-30 CN CN202121772445.3U patent/CN216052317U/en active Active
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