CN109633844B - Easily laid and easily peeled stress sensing optical cable - Google Patents
Easily laid and easily peeled stress sensing optical cable Download PDFInfo
- Publication number
- CN109633844B CN109633844B CN201910060221.0A CN201910060221A CN109633844B CN 109633844 B CN109633844 B CN 109633844B CN 201910060221 A CN201910060221 A CN 201910060221A CN 109633844 B CN109633844 B CN 109633844B
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- Prior art keywords
- optical cable
- glue
- easy
- cable sheath
- optical
- Prior art date
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- 230000003287 optical effect Effects 0.000 title claims abstract description 103
- 239000003292 glue Substances 0.000 claims abstract description 48
- 239000013307 optical fiber Substances 0.000 claims abstract description 28
- 238000005253 cladding Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 21
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 amplitude Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000000411 transmission spectrum Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
-
- 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
- G02B6/4407—Optical cables with internal fluted support member
-
- 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
Abstract
The invention relates to an easily laid easily peeled stress sensing optical cable which sequentially comprises an optical fiber, a tight cladding layer and an optical cable sheath layer from inside to outside, wherein a plurality of reinforcing elements are arranged in the optical cable sheath layer, the optical cable sheath layer comprises an optical cable sheath, a glue cap connected with the optical cable sheath and an optical cable cone connected with the glue cap, the cross section of the optical cable sheath is semicircular, the cross section of the glue cap is arrow-shaped, one end of the optical cable cone is connected with the glue cap, the cross section of the other end of the optical cable cone is reverse arrow-shaped, and the optical cable cone and the glue cap are adhered into an object to be tested through glue. Compared with the prior art, the invention has the advantages of high accuracy, high strain consistency, excellent durability and convenient arrangement and stripping.
Description
Technical Field
The invention relates to the technical field of sensing optical cables, in particular to an easily laid easily-peeled stress sensing optical cable.
Background
The stress sensing optical cable is based on the principle that the spectrum absorbed by partial substances changes along with the change of the optical fiber strain, and the optical fiber transmission spectrum is analyzed to know the real-time strain. The physical essence is to utilize the characteristic parameters of light waves transmitted in the optical fiber, such as amplitude, phase, polarization state, wavelength, mode and the like, to perform physical measurement feedback on the external environment factors, such as temperature, strain, vibration, pressure, radiation and the like, with sensitive characteristics. The conventional stress sensing optical cable mostly adopts a common communication optical cable with a compact structure inside, has no scene pertinence, and has more steps and more troubles in construction operations such as laying, stripping and the like.
Along with the rapid development of optical fiber structures and special optical cable technologies, stress monitoring applied to bridges, dams, tunnel inner walls and other occasions provides high requirements for optical fiber sensing technologies. At present, most of existing stress sensing optical cables are tightly-structured round cables, the pertinence to monitoring of wall structures is not strong, the construction and maintenance convenience degree is not high, and the reasons are as follows:
1. the existing sensing optical cables are mostly round cables, the strain of the optical cables can be kept consistent with the strain of a measured object in stress test except a cement pouring burying method, but the greatest defect of burying is that the buried original optical cable can only be taken out after the sensing optical cable is replaced once the optical cable is aged or damaged, so that the measured object can be damaged. Other layout methods such as gluing and supporting, wherein the sensing optical cable and the object to be tested have poor strain cooperativity, and degumming or supporting loosening can be caused by the long-term deformation and the restriction of the object to be tested and the optical cable;
2. the existing stress sensing optical cable is generally similar to a common cable in stripping construction and connection method, the stripping steps are complex, each layer of protective layer is required to be stripped by a professional stripping tool, the construction process is time-consuming and labor-consuming, and the construction period is long.
Disclosure of Invention
In order to overcome the defects of inconvenient arrangement and peeling in the prior art, and low strain consistency of the sensor optical cable and the object to be measured after arrangement, the invention provides the easily-laid easily-peeled stress sensor optical cable which has high accuracy, high strain consistency, excellent durability and convenient arrangement and peeling and is used for distributed monitoring stress, and the application of one cable with multiple scenes is satisfied.
In order to achieve the above purpose, the invention provides an easy-to-lay easy-to-peel stress sensing optical cable which sequentially comprises an optical fiber, a tight cladding layer and an optical cable sheath layer from inside to outside, wherein a plurality of reinforcing elements are arranged in the optical cable sheath layer, the optical cable sheath layer comprises an optical cable sheath, a glue cap connected with the optical cable sheath and an optical cable cone connected with the glue cap, the cross section of the optical cable sheath is semicircular, the cross section of the glue cap is arrow-shaped, one end of the optical cable cone is connected with the glue cap, the cross section of the other end of the optical cable cone is reverse arrow-shaped, and the optical cable cone and the glue cap are bonded into an object to be tested through glue.
According to a further technical scheme of the invention, the tight cladding is arranged on the periphery of the optical fiber in an extrusion fit mode.
According to a further technical scheme, the reinforcing element is a steel wire or glass fiber composite rod.
According to a further technical scheme, the reinforcing element is aramid yarn or glass yarn.
The further technical scheme of the invention is that the optical fiber is a single-mode coloring optical fiber.
The beneficial effects of the invention are as follows: according to the technical scheme, the easily laid and easily peeled stress sensing optical cable sequentially comprises an optical fiber, a tight cladding layer and an optical cable sheath layer from inside to outside, wherein a plurality of reinforcing elements are arranged in the optical cable sheath layer, the optical cable sheath layer comprises an optical cable sheath, a glue cap connected with the optical cable sheath and an optical cable cone connected with the glue cap, the cross section of the optical cable sheath is semicircular, the cross section of the glue cap is arrow-shaped, one end of the optical cable cone is connected with the glue cap, the cross section of the other end of the optical cable cone is reverse arrow-shaped, and the optical cable cone and the glue cap are adhered into an object to be tested through glue.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of an easy-lay, easy-peel stress sensing fiber optic cable of the present invention.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a preferred embodiment of an easy-to-lay easy-to-peel stress sensing optical cable according to the present invention.
As shown in fig. 1, the easy-to-lay easy-to-peel stress sensing optical cable provided by the embodiment sequentially comprises an optical fiber 10, a tight cladding 20 and an optical cable sheath layer from inside to outside, wherein a plurality of reinforcing elements 30 are arranged in the optical cable sheath layer, the optical cable sheath layer comprises an optical cable sheath 40, a glue cap 50 connected with the optical cable sheath 40 and an optical cable cone 60 connected with the glue cap 50, wherein the cross section of the optical cable sheath 40 is semicircular, the cross section of the glue cap 50 is arrow-shaped, one end of the optical cable cone 60 is connected with the glue cap 50, the cross section of the other end of the optical cable cone 60 is reverse arrow-shaped, and the optical cable cone 60 and the glue cap 50 are bonded in an object to be measured 80 through glue 70.
The object 80 may be, for example, an object 80 such as cement, a wall, or an inner wall of a tunnel.
Considering that the optical fiber 10 is very fragile, the optical fiber 10 is protected to prolong the service life of the sensing optical cable under the condition that the strain sensing sensitivity and consistency are not affected, and therefore, the optical fiber 10 is protected by adopting the tight cladding 20 in the embodiment.
In particular, the clad 20 may be provided on the outer circumference of the optical fiber 10 by press-fitting.
It should be noted that, the sensing optical cable provided in this embodiment has many application scenarios, and is best used in combination with the brillouin optical fiber sensing demodulator for measuring stress variation. The optical fiber 10 may be a single-mode colored optical fiber, the optical fiber 10 is used as a medium element for transmitting optical signals, and since the object 80 to be measured is glued to the sensing optical cable, the optical fiber 10 has no residual length in the optical cable and has a compact whole-cable structure, each component unit is formed by extrusion lamination, the object 80 to be measured is directly transmitted to the optical fiber 10 once strain is generated, the strain change causes brillouin frequency movement of the optical signal in the optical fiber 10, and strain measurement can be performed by frequency shift.
In this embodiment, the material of the reinforcing member 30 may be selected according to the usage scenario of the sensing fiber optic cable. For example, in a laying scene with a long straight route in most parts, a hard steel wire or glass fiber composite rod can be adopted, so that the whole cable has high rigidity and is convenient to lay straight; soft yarn-type tensile materials such as aramid yarns and glass yarns can be adopted in the scene of more corners and more bending routes, so that the whole cabling flexibility is high, and the bending routes can be comprehensively attached.
In this embodiment, the cable sheath layer needs to protect the cable because it is in direct contact with the outside, so as to provide the cable with wear resistance, compression resistance, impact resistance, and other capabilities. The function of the optical cable conical head 60 in the optical cable sheath layer is to facilitate the optical cable to sink into the glue 70, and the glue 70 is solidified after the laying construction, the reverse arrow at the other end of the optical cable conical head 60 can increase the glue adhesion area, so that the adhesiveness between the optical cable and the glue 70 is higher, and the optical cable can be prevented from falling out of the laying groove; the glue cap 50 in the optical cable sheath layer has the function of preventing the glue 70 from overflowing, forming the glue 70 blocking, laying the optical cable while extruding the glue 70 when laying, and effectively reducing the glue 70 from flowing out in the laying groove by the glue cap 50; the circular arc-shaped optical cable sheath 40 in the optical cable sheath layer is convenient to lay, and the optical cable can be laid in the groove by hands just like a thumbtack; the glue cap 50 and the semicircular optical cable sheath 40 in the optical cable sheath layer can be directly torn off by hand without any auxiliary tool, and the tightly packaged optical fiber 10 can be directly exposed after being torn off, so that the method is convenient and quick.
In summary, the easy-to-lay easy-to-peel stress sensing optical cable of the invention comprises an optical fiber, a tight cladding layer and an optical cable sheath layer from inside to outside in sequence, wherein a plurality of reinforcing elements are arranged in the optical cable sheath layer, the optical cable sheath layer comprises an optical cable sheath, a glue cap connected with the optical cable sheath and an optical cable cone connected with the glue cap, wherein the cross section of the optical cable sheath is semicircular, the cross section of the glue cap is arrow-shaped, one end of the optical cable cone is connected with the glue cap, the cross section of the other end of the optical cable cone is reverse arrow-shaped, and the optical cable cone and the glue cap are adhered in an object to be tested through glue.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or modifications in the structures or processes described in the specification and drawings, or the direct or indirect application of the present invention to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides an easy-to-lay easy-to-peel stress sensing optical cable, its characterized in that includes optic fibre, tight cladding and optical cable sheath layer from inside to outside in proper order, a plurality of reinforcement elements have been arranged in the optical cable sheath layer, the optical cable sheath layer include the optical cable sheath, with the glue cap that the optical cable sheath is connected, with the optical cable conical head that the glue cap is connected, wherein, the cross section of optical cable sheath is semicircular, semicircular plane portion with the glue cap is connected, the cross section of glue cap is the orientation the arrow of optic fibre, the arrow is including being on a parallel with semicircular plane portion's bottom surface, the one end of optical cable conical head with the bottom surface of glue cap is connected, and the cross section of the other end is reverse arrow, the glue cap prevents that glue from spilling over through glue bonding in the laying groove of the thing that awaits measuring.
2. The easy lay, easy peel stress sensing fiber optic cable of claim 1, wherein the tight cladding is disposed about the outer circumference of the optical fiber in a squeeze fit.
3. The easy lay easy peel stress sensing fiber optic cable of claim 1, wherein the strength member is a steel wire or fiberglass composite rod.
4. The easy lay easy peel stress sensing fiber optic cable of claim 1, wherein the strength members are aramid yarns or glass yarns.
5. The easy-lay, easy-peel stress sensing fiber optic cable of any of claims 1-4, wherein said optical fiber is a single-mode colored optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910060221.0A CN109633844B (en) | 2019-01-22 | 2019-01-22 | Easily laid and easily peeled stress sensing optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910060221.0A CN109633844B (en) | 2019-01-22 | 2019-01-22 | Easily laid and easily peeled stress sensing optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109633844A CN109633844A (en) | 2019-04-16 |
| CN109633844B true CN109633844B (en) | 2024-02-27 |
Family
ID=66063119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910060221.0A Active CN109633844B (en) | 2019-01-22 | 2019-01-22 | Easily laid and easily peeled stress sensing optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109633844B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217392A (en) * | 2021-11-01 | 2022-03-22 | 南京华信藤仓光通信有限公司 | Multipurpose special-shaped butterfly-shaped optical cable convenient for home-entry construction |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556458U (en) * | 2009-06-24 | 2010-08-18 | 沈群华 | Self-adhesive cable |
| CN203480088U (en) * | 2013-08-26 | 2014-03-12 | 扬州森斯光电科技有限公司 | Force strain transmission optical cable capable of reducing temperature influence |
| CN203535278U (en) * | 2013-10-16 | 2014-04-09 | 杭州富通通信技术股份有限公司 | Indoor optical fiber cable |
| CN203870304U (en) * | 2014-05-06 | 2014-10-08 | 西安西古光通信有限公司 | Micro introducing optical cable for concealed pipe wiring |
| CN104793306A (en) * | 2015-05-11 | 2015-07-22 | 江苏长飞中利光纤光缆有限公司 | Invisible optical cable and construction method |
| CN205374829U (en) * | 2015-12-01 | 2016-07-06 | 河南仕佳通信科技有限公司 | Indoor leading in cable of adherence type |
| CN209215673U (en) * | 2019-01-22 | 2019-08-06 | 深圳市特发信息股份有限公司 | Easily lay easy stripping stress sensing optical cable |
-
2019
- 2019-01-22 CN CN201910060221.0A patent/CN109633844B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556458U (en) * | 2009-06-24 | 2010-08-18 | 沈群华 | Self-adhesive cable |
| CN203480088U (en) * | 2013-08-26 | 2014-03-12 | 扬州森斯光电科技有限公司 | Force strain transmission optical cable capable of reducing temperature influence |
| CN203535278U (en) * | 2013-10-16 | 2014-04-09 | 杭州富通通信技术股份有限公司 | Indoor optical fiber cable |
| CN203870304U (en) * | 2014-05-06 | 2014-10-08 | 西安西古光通信有限公司 | Micro introducing optical cable for concealed pipe wiring |
| CN104793306A (en) * | 2015-05-11 | 2015-07-22 | 江苏长飞中利光纤光缆有限公司 | Invisible optical cable and construction method |
| CN205374829U (en) * | 2015-12-01 | 2016-07-06 | 河南仕佳通信科技有限公司 | Indoor leading in cable of adherence type |
| CN209215673U (en) * | 2019-01-22 | 2019-08-06 | 深圳市特发信息股份有限公司 | Easily lay easy stripping stress sensing optical cable |
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| Publication number | Publication date |
|---|---|
| CN109633844A (en) | 2019-04-16 |
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