CN111580232A - Novel floatable emergency optical cable - Google Patents
Novel floatable emergency optical cable Download PDFInfo
- Publication number
- CN111580232A CN111580232A CN202010551861.4A CN202010551861A CN111580232A CN 111580232 A CN111580232 A CN 111580232A CN 202010551861 A CN202010551861 A CN 202010551861A CN 111580232 A CN111580232 A CN 111580232A
- Authority
- CN
- China
- Prior art keywords
- optical cable
- floatable
- novel
- loose tube
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Abstract
The invention relates to a novel floatable emergency optical cable. The purpose is to provide a floatable emergency optical cable which is low in cost, simple, fast and recyclable. The technical scheme is as follows: the utility model provides a novel emergent optical cable of floatable which characterized in that: the cable core of the optical cable is a loose tube which is sleeved with a plurality of optical fibers in a penetrating mode, fiber paste for preventing moisture from entering is filled in the loose tube, the outside of the cable core is coated by an insulating foaming layer, the outside of the insulating foaming layer is coated by an aramid fiber reinforcement in a surrounding mode, and the outermost layer is a UV-resistant low-smoke halogen-free flame-retardant polyolefin sheath.
Description
Technical Field
The invention relates to a novel floatable emergency optical cable.
Background
With the continuous development of the optical communication industry, optical fiber cables are used more and more, people gradually leave optical fiber communication, the types of optical fiber cable products are increased, and various optical cable structures are in a variety of layers including pipelines, underwater, direct burial, overhead and the like in order to meet different laying environment requirements. In some special places, such as some rivers, lakes, shallow sea areas, or swimming pools, oceanographic venues, etc., sometimes a communication optical cable needs to be temporarily (emergently) laid for transmitting or receiving signals, the following two methods are used conventionally: (1) the underwater optical cable is used, but the cost is higher, the laying is difficult, and the recovery is difficult; (2) the overhead optical cable is used, but laying difficulty is high, fixing of two ends is difficult, and cost of the optical cable is high. In order to meet the laying requirements of customers, a novel optical cable is needed.
Disclosure of Invention
The invention aims to solve the technical problem, overcomes the defects in the background technology and provides a floatable emergency optical cable which is low in cost, simple, fast and recyclable.
The technical scheme adopted by the invention is as follows:
the utility model provides a novel emergent optical cable of floatable which characterized in that: the cable core of the optical cable is a loose tube which is sleeved with a plurality of optical fibers in a penetrating mode, fiber paste for preventing moisture from entering is filled in the loose tube, the outside of the cable core is coated by an insulating foaming layer, the outside of the insulating foaming layer is coated by an aramid fiber reinforcement in a surrounding mode, and the outermost layer is a UV-resistant low-smoke halogen-free flame-retardant polyolefin sheath.
The aramid fiber reinforcing member is aramid fiber yarn.
The loose tube is made of polybutylene terephthalate.
The invention has the beneficial effects that:
(1) the novel floatable emergency optical cable (hereinafter described as a floatable optical cable) can be directly laid on the water surface, a complex laying tool is not needed, the operation is simple, and the novel floatable emergency optical cable can be recycled, so that the labor cost is greatly saved;
(2) the water-blocking effect is good, the optical fiber is damped to cause attenuation and increase, the transmission performance is influenced, the floating optical cable core can play a good waterproof role by being filled with fiber paste and foamed, and normal communication can be ensured without other complicated waterproof measures;
(3) the floating optical cable can be normally used within the temperature range of 0-70 ℃, and special protection measures are not needed;
(4) compared with other optical cables with the same function (about 3000 yuan/km), the floating optical cable (1400 yuan/km) saves the cost by about 50 percent, and is high in quality and low in price.
(5) The invention has no metal component, resists electromagnetic signal interference and does not have the risk of electric shock.
Drawings
Fig. 1 is a schematic cross-sectional structure view of the floating optical cable according to the present invention.
1. An optical fiber; 2. fiber paste; 3. loosening the sleeve; 4. an insulating foam layer; 5. an aramid reinforcement; 6. an outer sheath.
Detailed Description
The invention will be further described with reference to an embodiment shown in the drawings.
The novel floatable emergency optical cable shown in the attached drawing is characterized in that a cable core of the optical cable is a loose tube 3 which is sleeved with a plurality of optical fibers 1 (two colored coated optical fibers are shown in the drawing), and the loose tube is filled with a fiber paste 2 (preferably a thixotropic fiber paste) to prevent moisture from entering; the cable core is coated by an insulating foaming layer 4, the insulating foaming layer is coated by an aramid fiber reinforcement part 5 in a surrounding mode, and an outer sheath 6 located on the outermost layer is a UV-resistant low-smoke halogen-free flame-retardant polyolefin sheath.
Preferably, the aramid reinforcement is aramid yarn.
Preferably, the material of the loose tube is polybutylene terephthalate.
The working principle of the invention is as follows:
1. when the optical cable is used, a part of the optical cable is immersed in water, and if the optical cable enters water, the attenuation is larger, so that the transmission performance is influenced; the loose tube is filled with the fiber paste, so that the moisture can be effectively prevented from entering.
2. The foaming process has high temperature and extrusion pressure during production, so that the optical fiber inside the foaming process is easily extruded, the optical fiber is damaged, the attenuation is large, and the transmission performance is influenced; the loose tube material of the invention is made of a material with high hardness and high temperature resistance, and the loose tube is made of polybutylene terephthalate (PBT for short), the hardness is greater than Shore 70D, the melting point is more than 210 ℃, and the influence of high extrusion pressure and high temperature of a foaming process on the optical fiber can be effectively counteracted.
3. In the process of laying and using the optical cable, a certain tensile force is needed, and the high-strength aramid fiber yarn is placed outside the insulating foaming layer to play a role in tensile resistance, so that the optical cable not only provides enough tensile force for the optical cable, but also plays a role in heat insulation (the insulating foaming layer is protected).
4. The outer sheath is made of low-smoke halogen-free flame-retardant polyolefin material with lower processing temperature (the processing temperature is about 150 ℃), so that no influence on foaming is ensured.
The above is a detailed description of the invention; for general manufacturers in the field, according to the ideas and principles of the embodiments of the present invention, the specific implementation and the application range may be changed; accordingly, the subject matter of this specification should not be construed as limiting the invention.
Claims (3)
1. The utility model provides a novel emergent optical cable of floatable which characterized in that: the cable core of the optical cable is a loose tube (3) which is sleeved with a plurality of optical fibers (1), a fiber paste (2) for preventing moisture from entering is filled in the loose tube, the outside of the cable core is coated by an insulating foaming layer (4), the outside of the insulating foaming layer is surrounded and coated by an aramid fiber reinforcement (5), and the outermost layer is a UV-resistant low-smoke halogen-free flame-retardant polyolefin sheath.
2. The novel floatable emergency optical cable of claim 1, characterized in that: the aramid fiber reinforcing member is aramid fiber yarn.
3. The novel floatable emergency optical cable of claim 2, characterized in that: the loose tube is made of polybutylene terephthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010551861.4A CN111580232A (en) | 2020-06-17 | 2020-06-17 | Novel floatable emergency optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010551861.4A CN111580232A (en) | 2020-06-17 | 2020-06-17 | Novel floatable emergency optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111580232A true CN111580232A (en) | 2020-08-25 |
Family
ID=72121735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010551861.4A Pending CN111580232A (en) | 2020-06-17 | 2020-06-17 | Novel floatable emergency optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111580232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115291347A (en) * | 2022-08-26 | 2022-11-04 | 江苏亨通光电股份有限公司 | High-performance pecking-proof overhead optical fiber ribbon and beam tube type optical fiber cable |
-
2020
- 2020-06-17 CN CN202010551861.4A patent/CN111580232A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115291347A (en) * | 2022-08-26 | 2022-11-04 | 江苏亨通光电股份有限公司 | High-performance pecking-proof overhead optical fiber ribbon and beam tube type optical fiber cable |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |