CN202196216U - All-dielectric temperature sensing optical cable - Google Patents
All-dielectric temperature sensing optical cable Download PDFInfo
- Publication number
- CN202196216U CN202196216U CN2011203165879U CN201120316587U CN202196216U CN 202196216 U CN202196216 U CN 202196216U CN 2011203165879 U CN2011203165879 U CN 2011203165879U CN 201120316587 U CN201120316587 U CN 201120316587U CN 202196216 U CN202196216 U CN 202196216U
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- temperature sensing
- beam tube
- twin
- pbt
- optic cable
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Abstract
The utility model discloses an all-dielectric temperature sensing optical cable, which comprises double-core optical fibers, fiber paste, a PBT (poly butylene terephthalate) beam tube, a glass fiber woven layer and a sheath layer, wherein the PBT beam tube is arranged on the peripheries of the double-core optical fibers, the fiber paste is filled in the space between the double-core optical fibers in the PBT beam tube, the glass fiber woven layer is tightly attached on the periphery of the PBT beam tube, and the sheath layer is wrapped on the periphery of the glass fiber woven layer. Due to the mode, the all-dielectric temperature sensing optical cable disclosed in the utility model has a simple structure and is convenient to manufacture; no metal components are contained in the structural material of the optical cable, so that the optical cable is applicable to a place where electromagnetic interference is frequent, and the risk that the induced voltage is damaged can be greatly reduced.
Description
Technical field
The utility model relates to the optical fiber cable field of optical fiber communication, particularly relates to a kind of structure and manufacturing technology thereof of temperature sensing optic cable.
Background technology
In distributed optical fiber temperature sensing system, optical fiber itself is temperature-sensing element (device), is again transmission medium.Usually utilize section property effect, Raman scattering and Brillouin scattering in the optical fiber can detect the variation of temperature of optical fiber present position, constituted ROTDR (Raman light time-domain reflectomer) distributed temperature sensing system and BOTDR (Brillouin light time-domain reflectomer) distributed temperature sensing system according to this principle.
In ROTDR distributed temperature sensing system, by the light wave that ROTDR sends, incide in the optical fiber, because optical photons and optical phonon generation inelastic collision in the optical fiber have produced the Raman scattering process, produced two spectral lines in the both sides of incident light spectrum.Wavelength is a stokes light greater than incident light, and its light intensity is temperature independent; Wavelength is an anti-Stokes light less than incident light, and its light intensity is relevant with temperature.Thereby the ratio of actual measurement Stokes light intensity and anti-Stokes light intensity, promptly can obtain variation of temperature, this is a ROTDR optical fiber sensing principle.
In BOTDR distributed temperature sensing system; The light wave that sends by BOTDR; Incide in the optical fiber, the frequency displacement of Brillouin scattering is the function of fiber optic temperature and strain dorsad, through the analysis to the frequency displacement of Brillouin scattering; Promptly can obtain the variation of temperature and strain, this is BOTDR fiber optic temperature and strain sensing principle.
Utilize distributed optical fiber temperature sensing system, sensing optic cable is applied in the various engineering construction structures, can monitor their temperature variation, thereby can guarantee the stable operation of engineering construction structure, prevent the generation of various disasters such as fire.
But owing to comprise hardware in the general temperature sensing optic cable, hardware receives the influence of external environment easily, particularly receives the interference of external electromagnetic easily.When in the more frequent place of some electromagnetic interference (EMI), for example when tunnel, high-tension cable raceway groove, transformer station etc., the destruction that receives induced voltage easily, thus influence the monitoring of temperature variation.
The utility model content
The technical matters that the utility model mainly solves provides a kind of simple in structure, function admirable, full medium temperature sensing optic cable that applicability is strong, and it is the containing metal element not, can reduce the influence to temperature monitoring such as electromagnetism, thunder and lightning.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of full medium temperature sensing optic cable is provided; Comprise: twin-core fiber, fine cream, PBT beam tube, fiberglass braided layer and restrictive coating, said PBT beam tube is arranged on the periphery of twin-core fiber, is filled with fine cream between the twin-core fiber in the said PBT beam tube; Said fiberglass braided layer fits tightly in PBT beam tube periphery, and said restrictive coating is wrapped in the periphery of fiberglass braided layer.
In preferred embodiment of the utility model, said twin-core fiber is multimode optical fiber or single-mode fiber.
In preferred embodiment of the utility model, two optical fiber in the said twin-core fiber are being marked two kinds of different colours.
In preferred embodiment of the utility model, the external diameter of said PBT beam tube is 1.4mm～1.8mm.
In preferred embodiment of the utility model, said restrictive coating adopts tygon or low-smoke halogen-free polyolefin protective cover material to process, and the external diameter of said restrictive coating is 3.5mm～4.5mm.
The beneficial effect of the utility model is: the full medium temperature sensing optic cable of the utility model is simple in structure; Easy to make; Do not have hardware in its cable configuration material, go for the more frequent place of electromagnetic interference (EMI), significantly reduced the risk that induced voltage destroys.
Description of drawings
Fig. 1 is the structural representation of xsect of a preferred embodiment of the full medium temperature sensing optic cable of the utility model;
The mark of each parts is following in the accompanying drawing: 1, twin-core fiber, 2, fine cream, 3, the PBT beam tube, 4, fiberglass braided layer, 5, restrictive coating.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the utility model is set forth in detail, thereby the protection domain of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, the utility model embodiment comprises:
A kind of full medium temperature sensing optic cable comprises: twin-core fiber 1, fine cream 2, PBT beam tube 3, fiberglass braided layer 4 and restrictive coating 5.Said PBT beam tube 3 is arranged on the periphery of twin-core fiber 1, is filled with fine cream 2 between the twin-core fiber 1 in the said PBT beam tube 3.Said fiberglass braided layer 4 fits tightly in PBT beam tube 3 peripheries, and said restrictive coating 5 is wrapped in the periphery of fiberglass braided layer 4.
Particularly, in the present embodiment, twin-core fiber 1 can adopt multimode optical fiber or single-mode fiber as sensing element, and wherein multimode optical fiber is applied to ROTDR distributed temperature sensing system, and single-mode fiber is applied to BOTDR distributed temperature sensing system.Two optical fiber in the twin-core fiber 1 need marked two kinds of different colours, the convenient differentiation.
Twin-core fiber 1 is arranged in the PBT beam tube 3, and PBT beam tube 3 can carry out mechanical protection to twin-core fiber 1, and the external diameter of said PBT beam tube 3 is 1.4mm～1.8mm.In PBT beam tube 3 between the twin-core fiber 1 also filling fine cream 2, fine cream 2 can further carry out the mechanical damping protection to twin-core fiber 1.
Periphery at PBT beam tube 3 has fitted tightly the reinforcing element of a fiberglass braided layer 4 as the full medium temperature sensing optic cable of the utility model.Particularly, can prevent that optical cable from receiving rodentine destruction, stop that mouse, hare etc. have identical functions with steel wire aspect the infringement of optical cable when wherein spun glass during as the strength members of sensing optic cable.
Also having wrapped up external diameter in the periphery of fiberglass braided layer 4 is the restrictive coating 5 of 3.5mm～4.5mm.Said restrictive coating 5 adopts tygon or low-smoke halogen-free polyolefin protective cover material to process, and it has good anti-flammability, uviolresistance and low-corrosiveness, has satisfied environmental protection requirement.
The full medium temperature sensing optic cable of the utility model also can be used as conventional indoor or outdoors optical cable and uses, and at this moment, the core number and the physical dimension of optical cable also can be done corresponding change.
The beneficial effect of the full medium temperature sensing optic cable of the utility model is: simple in structure, easy to make, with low cost; Excellent performance does not have hardware in the structured material of this temperature sensing optic cable, can avoid the interference of electromagnetism, thunder and lightning; When in the more frequent place of some electromagnetic interference (EMI), for example tunnel, high-tension cable raceway groove, transformer station etc. also can monitor variation of temperature; Significantly reduced the risk that induced voltage destroys, applicability is strong.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (5)
1. full medium temperature sensing optic cable; It is characterized in that; Comprise: twin-core fiber, fine cream, PBT beam tube, fiberglass braided layer and restrictive coating, said PBT beam tube is arranged on the periphery of twin-core fiber, is filled with fine cream between the twin-core fiber in the said PBT beam tube; Said fiberglass braided layer fits tightly in PBT beam tube periphery, and said restrictive coating is wrapped in the periphery of fiberglass braided layer.
2. full medium temperature sensing optic cable according to claim 1 is characterized in that said twin-core fiber is multimode optical fiber or single-mode fiber.
3. full medium temperature sensing optic cable according to claim 1 is characterized in that, two optical fiber in the said twin-core fiber are being marked two kinds of different colours.
4. full medium temperature sensing optic cable according to claim 1 is characterized in that the external diameter of said PBT beam tube is 1.4mm～1.8mm.
5. full medium temperature sensing optic cable according to claim 1 is characterized in that, said restrictive coating adopts tygon or low-smoke halogen-free polyolefin protective cover material to process, and the external diameter of said restrictive coating is 3.5mm～4.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203165879U CN202196216U (en) | 2011-08-26 | 2011-08-26 | All-dielectric temperature sensing optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203165879U CN202196216U (en) | 2011-08-26 | 2011-08-26 | All-dielectric temperature sensing optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202196216U true CN202196216U (en) | 2012-04-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203165879U Expired - Lifetime CN202196216U (en) | 2011-08-26 | 2011-08-26 | All-dielectric temperature sensing optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202196216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103984071A (en) * | 2014-05-06 | 2014-08-13 | 江苏南方通信科技有限公司 | Novel all-dielectric communication optical cable |
-
2011
- 2011-08-26 CN CN2011203165879U patent/CN202196216U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103984071A (en) * | 2014-05-06 | 2014-08-13 | 江苏南方通信科技有限公司 | Novel all-dielectric communication optical cable |
| CN103984071B (en) * | 2014-05-06 | 2017-02-15 | 江苏南方通信科技有限公司 | Novel all-dielectric communication optical cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
|
| CX01 | Expiry of patent term |