CN206450232U - Distributed sensing optical cable simple and fast anchor - Google Patents
Distributed sensing optical cable simple and fast anchor Download PDFInfo
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- CN206450232U CN206450232U CN201720123407.2U CN201720123407U CN206450232U CN 206450232 U CN206450232 U CN 206450232U CN 201720123407 U CN201720123407 U CN 201720123407U CN 206450232 U CN206450232 U CN 206450232U
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- optical cable
- intermediate plate
- distributed sensing
- sensing optical
- spring
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- 230000003287 optical effect Effects 0.000 title claims abstract description 104
- 239000002184 metal Substances 0.000 claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 26
- 239000011435 rock Substances 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 4
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- 238000001514 detection method Methods 0.000 claims description 2
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a kind of distributed sensing optical cable simple and fast anchor, the large cylinder is placed in ring flange, two ends fixation hollow round platform.Spring is provided with large cylinder, metal intermediate plate is fixed at the two ends of spring, and the other end of metal intermediate plate is connected with small cylinder, and ring flange, large cylinder, spring, metal intermediate plate and small cylinder are coaxial.Loose dwelling distributed sensing optical cable is passed through in the circular hole on ring flange periphery, to play a part of temperature-compensating and aim at centering.The optical cable anchor controls elastic force by the stiffness factor of spring, tight set type distributed sensing optical cable section upper stress is evenly distributed, and optical cable is firmly installed, and compact, make simple, it is easily operated, install rapid, it is with low cost, light path microbending loss is small, anchoring effect is reliable, it is adaptable to the distributed sensing optical cable of different sizes, structure and clad material, can be securely fixed in concrete, Rock And Soil inside or steel construction, the surface of concrete structure.
Description
Technical field
The utility model is related to fiber-optic monitoring and installation technicses field, and in particular to a kind of distributed sensing optical cable is simply fast
Fast anchor.
Background technology
Optical fiber sensing technology develops very rapidly, with sensitivity in recent decades as a kind of new sensing technology
Height, compact, strong interference immunity, good insulating, corrosion-resistant, cost performance are high, monitoring distance length, the advantages of be easily integrated.Its
Middle Brillouin light time domain reflection technology (BOTDR), Brillouin optical time domain analysis technology (BOTDA), Brillouin light frequency-domain analysis skill
Art (BOFDA) distributed optical fiber sensing technology unites two into one " biography " and " sense ", all positions along measurable optical fiber, optical cable
Strain and the parameter such as temperature, the application in fields such as military affairs, national defence, the energy, medical treatment, household electrical appliances and civil engineerings is more next in recent years
It is wider, there is very big development potentiality especially in Geotechnical Engineering, Geological Hazards Monitoring early warning.At present, occurred both at home and abroad
Many application distribution formula sensing optic cables monitoring tunnel deformations, landslide displacement, pipeline stress, dam seepage, subgrade settlement, ground
Collapse, the case history of base pit stability.
The research on distributed sensing optical cable gradually increases in recent years, but it is main still concentrate on Fibre Optical Sensor precision,
Stability is improved, design, the networking of novel optical fiber sensor, measured data analysis and excavation, and various materials-optical cable interface
In terms of coupling, but seldom it is related to the design and field conduct of distributed sensing optical cable anchor.Due to tradition distribution
Formula sensing optic cable surface is very smooth, if cable surface is fixed without anchor, can cause the control of monitoring site three-dimensional coordinate
Become abnormal difficult, while monitoring result poor reliability, measuring accuracy is very big by optical cable and testee interface coupling
Influence.At present for the anchorage problem of distributed sensing optical cable, never good solution both at home and abroad.With distribution
The engineer applied of optical fiber sensing technology is more and more, and optical cable anchorage problem has been increasingly becoming a limit fibre monitoring technology development
Bottleneck problem.
It is many to be pasted using glue such as epoxy resin for the fixation of distributed sensing optical cable at present in engineering site, or
Carry out simple physics anchoring.Glue fix method operate it is complex, and implement when need to wait for glue curing, shadow
Construction speed is rung, has larger limitation in terms of installation standardizes poor, time-consuming, aesthetic property of constructing；On the other hand, in length
In phase monitoring process, the performance of glue is influenceed by environmental factors such as temperature, humidity, air-borne dusts again, exist it is fixed it is not firm,
The shortcomings such as Coupling Deformation is poor, poor durability, easy aging come off.
Simple physics anchoring is general to utilize iron wire colligation, or screw, nut and rigid clip fixation etc., and the former is present
Anchoring process is simple and crude, optical cable holds eely defect, and the latter has construction procedure many, and special clamping piece structure is complicated, involves great expense, nothing
The shortcomings of method controls chucking power size.The problem of also one important is that simple physics anchoring can neither fully meet anchoring
The requirement of intensity, can produce in potential physical damnification, light path to cable configuration and easily occur larger microbending loss, reduce again
The accuracy of fiber-optic monitoring data, monitoring reading can not be obtained when serious.So, urgent need research and development are a kind of simple in construction, fixed
Firm, anchoring is quick, cheap, applied widely, to new distribution type sensing optic cable anchoring side of the optical cable without physical damnification
Method and its device, under conditions of site operation progress and monitoring effect is not influenceed, realize rapid anchor of the optical cable in monitoring field
Gu and embedded fixation.
The content of the invention
The purpose of this utility model be for prior art exist shortcoming it is simply fast there is provided a kind of distributed sensing optical cable
Fast anchor, with make it is simple, anchor firm, attractive in appearance, easy to operate, time saving and energy saving, easily controllable chucking power, to optical cable
The features such as not damaged, small light path microbending loss.The anchoring process and device are applied to point of different sizes, structure and clad material
Cloth sensing optic cable, can be securely fixed in concrete, the inside of Rock And Soil or steel construction, the table of concrete structure
Face.
A kind of simple and fast anchor for distributed sensing optical cable that the utility model is provided, including ring flange, great circle
Cylinder, small cylinder, hollow round table, metal intermediate plate, spring, the large cylinder are placed in ring flange, two ends fixation hollow round platform, great circle
Spring is provided with cylinder, the two ends of spring are provided with metal intermediate plate, and the other end of metal intermediate plate is connected with small cylinder, ring flange, great circle
Cylinder, spring, metal intermediate plate and small cylinder are coaxial；Optical cable installation folder is detachably connected on the small cylinder at two ends；Described metal
Intermediate plate is open configuration under spring-compressed state, is closure state under spring extended configuration.
The circular hole on the ring flange periphery, which penetrates one, to be used for temperature-compensating and aims at the loose dwelling distributed sensing of centering
Optical cable.
The opening and closing of described metal intermediate plate are controlled by optical cable installation folder, when optical cable installation folder is by anchor
The small cylinder at two ends is pressed into large cylinder, then spring compression, and metal intermediate plate is separated from each other, and open-shaped state will now be waited to anchor
Tight set type distributed sensing optical cable be axially inserted into anchor；When unclamping optical cable installation folder, metal intermediate plate is in spring force
In the presence of rebound, metal intermediate plate is in closure state so that tight set type distributed sensing optical cable is clamped.
The metal intermediate plate at least provided with three valves, intermediate plate can folding realize auto-lock function.
The metal clip surface is provided with rubber sheet gasket.
The simple and fast anchor is directly anchored in mounting seat according to detection requirement, and mounting seat is with being tested
The surface of structure is fixedly connected；Or direct-burried is in detected concrete or the inside of Rock And Soil.
Beneficial effect：
Improvement of the utility model Jing Guo the above, can be achieved convenient, efficient distributed sensing optical cable anchoring, greatly carries
High efficiency of construction, while can realize temperature-compensating again, plays a part of calibrating centering, has filled up in technical field of optical fiber sensing
The blank of distributed sensing optical cable anchorage style.Special optical cable installation folder is formed according to the self structure of anchor is special,
Tight set type distributed sensing optical cable is enabled to pass easily through anchor.The metal clip surface is provided with rubber sheet gasket, can
To avoid optical cable from being contacted with the hard of metal intermediate plate, reduce the stress concentration that optical cable is produced in anchoring, while the bullet that optical cable is subject to
Property the big I of power controlled by the stiffness factor of spring, and be evenly distributed in cable cross-section upper stress, optical cable is firmly installed, and
Microbending loss is small.The utility model overcomes numerous shortcomings of conventional distributed sensing optical cable anchorage style, while having crowd concurrently again
More other functions, it is convenient and practical, with wide marketing and application value.
According to recklessly can law F=kx and optical fiber cable nature, control optical cable by adjusting the stiffness factor of spring
The size of chucking power so that chucking power suffered by the tight set type distributed sensing optical cable surface of different sizes, structure and clad material
It can arbitrarily adjust, reach optimal anchoring effect.
Flange thickness and diameter on anchor can be designed according to being actually needed for field monitoring, with full
The certain anchoring bearing capacity of foot, it is ensured that will not be slipped between optical cable and testee.The spacing of anchor is needed also according to monitoring
To determine.
Mounting seat can choose different shapes according to the difference of measurement structure, can realize gluing, welding, bolt
The different mounting means such as connection.
Brief description of the drawings
Fig. 1 is the structural representation that anchor of the present utility model is implemented.
Fig. 2 is that anchor of the present utility model is in opening and closing two states schematic diagram.
Fig. 3 is that the utility model anchors the schematic diagram for being arranged on tested structure surface.
Fig. 4 is that the utility model anchors the schematic diagram being embedded in inside detected concrete or Rock And Soil.
Ring flange 1, large cylinder 2, small cylinder 3, hollow round table 4, metal intermediate plate 5, spring 6, tight set type distributed sensing light
Cable 7, loose dwelling distributed sensing optical cable 8, optical cable installation folder 9, anchor 10, mounting seat 11 is tested structure 12, optical fiber
(FBG) demodulator 13, detected concrete or Rock And Soil 14.
Embodiment
Distributed sensing optical cable simple and fast anchoring process and device, including ring flange, large cylinder, small cylinder, open circles
Platform, metal intermediate plate, spring.The ring flange and large cylinder are welded to each other, two ends fixation hollow round platform.Bullet is provided with large cylinder
Metal intermediate plate is fixed at spring, the two ends of spring, and the other end of metal intermediate plate is connected with small cylinder.Metal intermediate plate is flat strip,
At least provided with three valves, intermediate plate can folding realize auto-lock function.On sheet metal surface with one layer of rubber sheet gasket so that anchoring light
Stress concentration will not be produced during fine or optical cable, to prevent distributed sensing optical cable structural damage, or optical path loss is excessive.Flange
Disk, large cylinder, spring, metal intermediate plate and small cylinder are coaxial；Optical cable installation folder is detachably connected on the small cylinder at two ends.
The circular hole on ring flange periphery can penetrate a loose dwelling distributed sensing optical cable, on the one hand play the work of temperature-compensating
With centering effect can be played by the other hand being stretched, and improve the degree of accuracy that optical cable is installed.Filled when will be anchored with optical cable installation folder
Put in the small cylinder press-in large cylinder at two ends so that spring compression, metal intermediate plate is separated from each other, and now can insert optical cable vertically
Enter in anchor；When unclamping optical cable installation folder, metal clip sector-meeting is rebounded under spring force so that optical cable is pressed from both sides
Tightly, the effect of anchoring optical cable is reached with this.The surface of metal intermediate plate 5 is provided with rubber sheet gasket, can avoid optical cable and metal
The hard contact of intermediate plate, reduces the stress concentration that optical cable is produced in anchoring, while the big I of elastic force that optical cable is subject to passes through bullet
The stiffness factor control of spring, and be evenly distributed on section, optical cable is firmly installed, and microbending loss is small.
When need to by distributed sensing optical cable Transducers Embedded in Concrete or Rock And Soil carry out deformation monitoring when, by anchor according to
Certain spacing is arranged on distributed strain sensor fibre or optical cable, to ensure the deformation coupling of optical fiber or optical cable and surrounding medium
Close.
Deformed when distributed strain sensor fibre or optical cable need to be arranged on concrete structure or steel structure surface
During monitoring, by optical fiber cable anchor according to certain spacing (l1、l2、l3……、ln) it is arranged on distributed strain sense light
On fine or optical cable, then fixed with monitored works by mounting seat.
According to recklessly can law F=kx and optical fiber nature, control optical cable to clamp by adjusting the stiffness factor of spring
The size of power so that chucking power suffered by the tight set type distributed sensing optical cable surface of different sizes, structure and clad material can appoint
Meaning adjustment, reaches optimal anchoring effect.
Embodiment：
As depicted in figs. 1 and 2, the utility model structure includes：Ring flange 1, large cylinder 2, small cylinder 3, hollow round table 4,
Metal intermediate plate 5, spring 6.Agent structure includes ring flange and large cylinder is welded to each other, two ends fixation hollow round platform.In large cylinder
Provided with spring, metal intermediate plate is fixed at the two ends of spring, and the other end of metal intermediate plate is connected with small cylinder.Metal intermediate plate is flat length
Strip, and on sheet metal surface with one layer of rubber sheet gasket so that it will not produce stress concentration when anchoring optical fiber or optical cable.Flange
Disk, large cylinder, spring, metal intermediate plate and small cylinder are coaxial；Optical cable installation folder is detachably connected on the small cylinder at two ends.
The small cylinder at anchor two ends is pressed into large cylinder when with optical cable installation folder so that spring compression, metal clip
Piece is separated from each other, and now tight set type distributed sensing optical cable can be axially inserted into anchor；When release optical cable installation folder
When, metal clip sector-meeting is rebounded under spring force so that tight set type distributed sensing optical cable is clamped.
Optical cable 7 and 8 is fixed in mounting seat 11 by Fig. 3 by anchor 10 of the present utility model, mounting seat 11
The surface of tested structure 12 is fixed on, then optical cable 7 and 8 is connected on optical fibre interrogation instrument 13, you can reading is monitored.Figure
4 are embedded in anchor 10 according to certain spacing the inside of Rock And Soil 14, and optical cable 7 and 8 finally is connected into optical fibre interrogation
Reading is carried out on instrument 13.Two kinds of optical cable arrangements can significantly increase the Coupling Deformation between optical cable and testee, carry
The monitoring accuracy of high distributed sensing optical cable.
According to recklessly can law F=kx and optical fiber nature, control optical cable to clamp by adjusting the stiffness factor of spring
The size of power so that chucking power suffered by the tight set type distributed sensing optical cable surface of different sizes, structure and clad material can appoint
Meaning adjustment, reaches optimal anchoring effect.
Anchoring spacing (the l of optical cable1、l2、l3……、ln) be designed according to actual requirement, when the optimal anchoring spacing of selection
Afterwards, mark is carried out on optical cable.Then anchor is unclamped using optical cable installation folder so that tight shell type distributed sensing optical cable
Passed through.When anchor reaches design anchorage point so that anchor is closed, and just can reach optimal anchoring
Effect.Then, loose sleeve distributed sensing optical cable is passed through into the circular hole on ring flange.Next step reuses optical cable installation folder by under
One anchor and optical cable connection.By that analogy, cause all anchors reach design anchorage point can be complete in order
Into the anchoring of whole optical cable.
Flange thickness and diameter on anchor can be designed according to being actually needed for field monitoring, with full
The certain anchoring bearing capacity of foot, it is ensured that will not be slipped between optical cable and testee.The spacing of anchor is needed also according to monitoring
To determine.
In addition to the implementation, the utility model can also have other embodiment.All use equivalent substitutions or equivalent change
The technical scheme to be formed is changed, the protection domain of the utility model requirement is all fallen within.
Claims (6)
1. a kind of simple and fast anchor of distributed sensing optical cable, it is characterised in that：Including ring flange (1), large cylinder
(2), small cylinder (3), hollow round table (4), metal intermediate plate (5), spring (6), the large cylinder are placed in ring flange, and two ends are fixed
Spring is provided with hollow round table, large cylinder, the two ends of spring are provided with metal intermediate plate, and the other end of metal intermediate plate connects with small cylinder
Connect, ring flange, large cylinder, spring, metal intermediate plate and small cylinder are coaxial；Optical cable installation folder (9) is detachably connected on the small of two ends
On cylinder；Described metal intermediate plate is open configuration under spring-compressed state, is closure state under spring extended configuration.
2. the simple and fast anchor of distributed sensing optical cable according to claim 1, it is characterised in that：The flange
The circular hole on disk periphery, which penetrates one, to be used for temperature-compensating and aims at the loose dwelling distributed sensing optical cable (8) of centering.
3. the simple and fast anchor of distributed sensing optical cable according to claim 1, it is characterised in that：Described gold
The opening and closing of category intermediate plate are controlled by optical cable installation folder, when the small cylinder at anchor two ends is pressed into by optical cable installation folder
In large cylinder, then spring compression, metal intermediate plate is separated from each other, open-shaped state, now passes tight set type distribution to be anchored
Sensing optical cable (7) is axially inserted into anchor；When unclamping optical cable installation folder, metal intermediate plate rebounds under spring force,
Metal intermediate plate is in closure state so that tight set type distributed sensing optical cable is clamped.
4. the simple and fast anchor of distributed sensing optical cable according to claim 1, it is characterised in that：The metal
Intermediate plate at least provided with three valves, intermediate plate can folding realize auto-lock function.
5. the simple and fast anchor of distributed sensing optical cable according to claim 1, it is characterised in that：The metal
Clip surface is provided with rubber sheet gasket.
6. the simple and fast anchor of distributed sensing optical cable according to claim 1, it is characterised in that：It is described simple
Quick anchoring device is directly anchored in mounting seat (11) according to detection requirement, mounting seat and tested structure (12)
Surface is fixedly connected；Or direct-burried is in detected concrete or the inside of Rock And Soil (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123407.2U CN206450232U (en) | 2017-02-10 | 2017-02-10 | Distributed sensing optical cable simple and fast anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123407.2U CN206450232U (en) | 2017-02-10 | 2017-02-10 | Distributed sensing optical cable simple and fast anchor |
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| Publication Number | Publication Date |
|---|---|
| CN206450232U true CN206450232U (en) | 2017-08-29 |
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ID=59665582
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720123407.2U Active CN206450232U (en) | 2017-02-10 | 2017-02-10 | Distributed sensing optical cable simple and fast anchor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679700A (en) * | 2017-02-10 | 2017-05-17 | 南京大学 | Simple and rapid anchoring method and apparatus of distributive sensing optical cable |
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2017
- 2017-02-10 CN CN201720123407.2U patent/CN206450232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679700A (en) * | 2017-02-10 | 2017-05-17 | 南京大学 | Simple and rapid anchoring method and apparatus of distributive sensing optical cable |
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