CN209727156U - A kind of OPLC flattens the device of experiment fibre strain and synchro measure of decaying - Google Patents
A kind of OPLC flattens the device of experiment fibre strain and synchro measure of decaying Download PDFInfo
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- CN209727156U CN209727156U CN201920538842.0U CN201920538842U CN209727156U CN 209727156 U CN209727156 U CN 209727156U CN 201920538842 U CN201920538842 U CN 201920538842U CN 209727156 U CN209727156 U CN 209727156U
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Abstract
The utility model discloses the devices that a kind of OPLC flattens experiment fibre strain and synchro measure of decaying.When measurement, comprising steps of OPLC conductor is connected and composed loop, different load electric current is injected using cable heating device, thermocouple measurement conductor and fiber unit position temperature are put into OPLC；OPLC is put in flatting apparatus platform base, lifting moveable platform applies different flat pressures；By optical fiber is connect with light source, light power meter all the way in OPLC, optical fiber attenuation is tested using insertion-loss method, another way optical fiber connect with fiber optic temperature strain analysis instrument, and realization temperature strain is tested；Change load current, different flat pressures are applied to OPLC, record the variation of temperature, optical power and Brillouin's frequency, synchronize to obtain the fibre strain under OPLC different temperatures difference flat pressure and optical fiber attenuation by calculating.The utility model is designed by the coordinated of OPLC different experiments device, solves the technical issues of synchro measure of fibre strain and decaying in the case of OPLC different load, different flat pressures.
Description
Technical field
The utility model belongs to 1kV (Um=1.2kV) and following optical fiber composite low-voltage cable OPLC flatten in experiment in cable
Optical fiber attenuation loss test technical field, and in particular to a kind of OPLC flattens the dress of experiment fibre strain and synchro measure of decaying
It sets.
Background technique
OPLC is that a kind of have conveying electric energy and optic communication ability by what insulated wire cores and optical transmission unit were combined
Cable can provide the transmission of electric power and information simultaneously, be suitable for voltage rating 0.6/1 (1.2) kV and power engineering below.
OPLC to need the complex engineerings of a plurality of route such as the electric wire, cable, telephone wire, the cable television line that lay originally and be integrated
Change construction, realizes four networks one platform, not only simplify installation procedure, line resource and pipeline resource is also greatly saved, simultaneously
It has the advantage of information-based, automation, interactive etc., is the terminal main product of " smart grid ".
The flattening test that OPLC is carried out, it is therefore an objective to determine that composite rope bears the ability flattened.One section is enough to implement to advise
The composite rope for determining flattening test flattens sample between flat susceptor plate and removable steel plate, applies different pressures
Flat power is monitored after retention time 1min, then gradually sheds flat pressure, is finally monitored again after crossing 5min, common
Acceptable criterion be optical fiber is not broken, optical fiber attenuation variation be no more than standardize as defined in numerical value.Currently, optical fiber exists in existing OPLC cable
Apply the method that optical fiber attenuation under flat pressure detects outside, but it can not be applied to different outer apply flat pressure, different load current, no
Optical fiber attenuation and fibre strain synchro measure in OPLC cable under synthermal.Therefore, existing test device cannot be directed to OPLC
It flattens experiment fibre strain and optical fiber attenuation synchro measure is those skilled in the art's technical issues that need to address.
Utility model content
The purpose of this utility model is that in view of the above shortcomings of the prior art, providing a kind of OPLC flattening experiment optical fiber
The device of strain and decaying synchro measure.
What the utility model adopts the following technical solution to realize:
A kind of OPLC flattens the device of experiment fibre strain and synchro measure of decaying, including thermocouple, thermocouple recorder,
Light source, light power meter, optical power recorder, fiber optic temperature strain analysis instrument, pressure testboard and strong current generator；Its
In,
When measurement, OPLC to be measured passes through strong current generator, and the both ends OPLC to be measured conductor connects, and forms power circuit；
Thermocouple is embedded on OPLC to be measured, for measuring the temperature of different moments OPLC to be measured；OPLC to be measured is arranged in pressure test
On platform, flat pressure is applied to OPLC to be measured by pressure testboard；The both ends of optical fiber in OPLC to be measured respectively with light source and light
Power meter connection, forms a light-path；The both ends of another optical fiber in OPLC to be measured respectively with fiber optic temperature strain analysis
Two ports of instrument are connected, and form another light-path；The electric current generated to OPLC to be measured is adjusted by strong current generator
Size；Thermocouple and light power meter are connect with thermocouple recorder, optical power recorder respectively, and thermocouple recorder is for storing up
The temperature value for each structure of OPLC to be measured that thermocouple was measured in different moments is deposited, light power meter is used to acquire the light function of different moments
Rate value, and the optical power measured every time is stored by optical power recorder；Fiber optic temperature strain analysis instrument is for when acquiring different
The Brillouin's frequency for the OPLC different location to be measured carved.
The utility model, which further improves, to be, OPLC to be measured includes the oversheath set gradually from outside to inside and wrapped
Band, and the light unit being arranged in twining package tape and several conductors, are provided with insulation in the circumferential direction of each conductor, and conductor with
Filler is provided between conductor and between conductor and light unit.
The utility model, which further improves, to be, pressure testboard includes that clamp column, pressure gauge, pressure gauge are fixed
Block, removable steel plate, fixed station and control panel；Wherein, pressure gauge connect with pressure gauge fixed block and is fixed on clamp column
On, removable steel plate is fixed on pressure gauge bottom by fixture, is control panel and fixed station below clamp column.
The utility model, which further improves, to be, light source is monochromatic source, the white light for being 1550nm for generation wavelength；
Light power meter is photodetector, and optical wavelength range that can be detected is in 185-25000nm；Fiber optic temperature strain analysis instrument is base
In the optical time-domain analyzer of Brillouin scattering, i.e. fiber optic temperature strain analysis instrument.
The utility model has following beneficial technical effect:
A kind of OPLC provided by the utility model flattens the device of experiment fibre strain and synchro measure of decaying, including optical fiber
Temperature strain analyzer, light source, strong current generator, light power meter, recorder, thermocouple and pressure testboard, can either be
The temperature of each structure under different electric currents is detected in the case where applying different flat pressures to OPLC, it also can be to optical fiber in cable
Strain and optical power detected.
In conclusion the utility model realizes each structure under OPLC cable leads under the effect of different flat pressures to different electric currents
Temperature and optical fiber strain detection synchronous with optical power, solve optical fiber in the case of OPLC different load, different flat pressure
The technical issues of synchro measure of strain and decaying.
Detailed description of the invention
Attached drawing 1 is the schematic device that OPLC flattens experiment fibre strain and synchro measure of decaying.
Attached drawing 2 is OPLC structural schematic diagram to be measured.
Attached drawing 3 is pressure testboard structural schematic diagram.
Attached drawing 4 is OPLC difference flat pressure fibre strain detection block diagram synchronous with optical fiber attenuation.
Attached drawing 5 is the corresponding fiber optic temperature curve graph of different electric currents.
Attached drawing 6 is Brillouin frequency curve chart of the optical fiber under the effect of different flat pressures under different electric currents.
Attached drawing 7 is fibre strain dygoram of the optical fiber under the effect of different flat pressures under different electric currents.
Attached drawing 8 is optical fiber attenuation curve graph of the optical fiber under the effect of different flat pressures under different electric currents.
Description of symbols:
1 is thermocouple, and 2 be thermocouple recorder, and 3 be light source, and 4 be light power meter, and 5 be optical power recorder, and 6 be optical fiber
Temperature strain analyzer, 7 be pressure testboard, and 8 be strong current generator, and 9 be OPLC to be measured, and 701 be clamp column, and 702 are
Pressure gauge, 703 be pressure gauge fixed block, and 704 be removable steel plate, and 705 be fixed station, and 706 be control panel, and 901 be conductor,
902 be insulation, and 903 be light unit, and 904 be filler, and 905 be twining package tape, and 906 be oversheath.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 to Figure 3, a kind of OPLC provided by the utility model flattens experiment fibre strain and decaying synchro measure
Device, including fiber optic temperature strain analysis instrument 6, light source 4, OPLC9 to be measured, strong current generator 8, light power meter 4, optical power
Recorder 5, thermocouple 1, thermocouple recorder 2 and pressure testboard 7.
When measurement, OPLC 9 to be measured passes through strong current generator 8, and 9 both ends conductor of OPLC to be measured connects, and is formed and is powered
Circuit；Thermocouple 1 is embedded on OPLC 9 to be measured, for measuring the temperature of different moments OPLC 9 to be measured；OPLC 9 to be measured is set
It sets on pressure testboard 8, is used to apply flat pressure to OPLC 9 to be measured by pressure testboard 8；Its in OPLC 9 to be measured
The both ends of middle optical fiber are connect with light source 3 and light power meter 4 respectively, form a light-path；Another light in OPLC 9 to be measured
Fine both ends are connected with two ports of fiber optic temperature strain analysis instrument 6 respectively, form another light-path；Adjust pressure regulator
17 for controlling strong current generator 8 to the size of the OPLC 9 to be measured electric current generated, and size of current passes through current transformer
22 registration obtains；Thermocouple 1 and light power meter 4 are connect with optical power recorder 5 respectively, and thermocouple recorder 2 is for storing
The temperature value for each structure of OPLC to be measured that thermocouple 1 was measured in different moments；Light power meter 4 can acquire the optical power of different moments
Value, and the optical power measured every time is stored by optical power recorder 5.
As shown in figure 4, flattening the dress of experiment fibre strain and synchro measure of decaying using OPLC provided by the utility model
It sets, when measurement, comprising the following steps:
1) OPLC 9 to be measured is passed through into strong current generator 8, and 9 both ends conductor 1 of OPLC to be measured is connected, formed
Power circuit；It is punched on OPLC 9 to be measured, is put into thermocouple 1, measure the temperature of different moments OPLC 9 to be measured；It will be to be measured
OPLC 9 is placed on the fixed station 705 of pressure testboard 8, is that OPLC 9 to be measured applies flat pressure using removable steel plate 704.
2) both ends of the wherein optical fiber in OPLC 9 to be measured are connect with light source 3 and light power meter 4 respectively, forms one
Light-path；By the both ends of another optical fiber in OPLC 9 to be measured respectively with two ports of fiber optic temperature strain analysis instrument 6
It is connected, forms another light-path.
3) change size of the strong current generator 8 by 9 electric current of OPLC to be measured, different flattenings are applied to OPLC 9 to be measured
Power records the temperature that thermocouple 1 measures under different electric currents, the optical power and fiber optic temperature strain analysis that light power meter 4 measures
Brillouin's frequency that instrument 6 measures.
4) it according to Brillouin's frequency and temperature, the relational expression of the relational expression of strain and optical fiber attenuation and optical power, obtains same
One moment the OPLC 9 to be measured strain of optical fiber and pad value under the effect of different flat pressures.
Step 1) is research object with the OPLC to be measured 9 of OPLC-WDZ-YJY-0.6/1kV-3*10+GQ-2B6a, to be measured
The structure of OPLC 9 includes conductor 901, insulation 902, light unit 903, fills 904, twining package tape 905 and oversheath 906, to be measured
9 structural schematic diagram of OPLC is as shown in Figure 2.It should make the conductor and light list in OPLC 9 to be measured when punching to OPLC 9 to be measured
Member is exposed, and thermocouple 1 is contacted with conductor 901, light unit 903 respectively, measures the temperature of each structure of OPLC 9 to be measured.Thermoelectricity
Even 1 connect with thermocouple recorder 2, stores the temperature value for each structure of OPLC to be measured 9 that thermocouple 1 was measured in different moments.
Pressure testboard 8 includes clamp column 701, pressure gauge 702, pressure gauge fixed block 703, moves steel plate 704, is solid
Determine platform 705 and control panel 706, the length for moving steel plate 704 is 100mm.Removable steel plate 704 is fixed on using fixture
Pressure gauge 702, pressure gauge 702 connect and are fixed on pressure gauge fixed block 703 clamp column 701, be below clamp column 701
OPLC 9 to be measured is placed on fixed station 705 by control panel 706 and fixed station 705, and by mobile fixture column 701
Pressure gauge fixed block 703 position change pressure gauge 702 and removable steel plate 704 height, adjusted by control panel 706
The size that pressure gauge 702 passes to the flat pressure of OPLC 9 to be measured by moving steel plate 704.702 structure of pressure testboard is shown
It is intended to as shown in Figure 3.
Step 2) is to carry out optical fiber attenuation detection to optical fiber in OPLC 9 to be measured, by a wherein optical fiber in OPLC 9 to be measured
Both ends and the welding of FC/APC single-mode fiber jumper so that the light that generates of light source 3 that pass through optical fiber transmitting in OPLC 9 to be measured
The size of optical power is measured to light power meter 4.Light source 3 is Fiberlabs ASE-1550-25 light source, is for generation wavelength
The white light of 1550nm, light power meter 4 are the PM320E light power meter of Thorlabs, and the optical wavelength range of that detection is in 185-
25000nm.By another optical fiber and fiber optic temperature strain analysis different from connection light source 3, light power meter 4 in OPLC 9 to be measured
Two connectors of instrument 6 are connected to form light-path by FC/APC single-mode fiber jumper.Fiber optic temperature strain analysis instrument 6 is
Omnisens DITEST STA-R fiber optic temperature strain analysis instrument, the analyzer are a set of former based on Brillouin optical time domain analysis
The distributed temperature strain detecting system of reason detects the fiber optic temperature of optical fiber different location and Strain Distribution feelings in OPLC 9 to be measured
Condition.The length of optical fiber is 10 meter in the OPLC to be measured 9 used in test, Brillouin's frequency of axial optical fiber different location in cable
It can be obtained by the analyzer measurement.
Step 3) OPLC 9 to be measured includes optical fiber temperature in different flat pressure fibre strains detection system synchronous with optical fiber attenuation
Spend strain analysis instrument 6, light source 3, OPLC to be measured 9, strong current generator 8, light power meter 4, optical power recorder 19, thermocouple
1, thermocouple recorder 2 and pressure testboard 8.Strong current generator 8 is controlled to change to the big of the OPLC 9 to be measured electric current generated
It is small.Current value is maintained at 20A, 40A, 60A, 80A, 100A respectively, thermocouple 1 is observed when electric current is stable at a value and is measured
Conductor temperature, when conductor temperature stablize one value it is constant when, adjust pressure testboard 8 apply flat pressure size be respectively
200N, 300N, 400N, the optical power size that recording optical power meter 4 measures under the effect of different flat pressures respectively, and utilize optical fiber
Temperature strain analyzer 6 measures Brillouin's frequency of optical fiber in OPLC 9 to be measured at this time.
Light power meter 4 can acquire the optical power value of different moments, connect the light that will be measured every time with thermocouple recorder 19
Power storage is in optical power recorder 5.The available OPLC to be measured in the case where optical circuit of fiber optic temperature strain analysis instrument 6
Brillouin's frequency of optical fiber different location in 9, fiber optic temperature strain analysis instrument 6 can be by optical fiber different locations containing embedded software
Brillouin's frequency stores, and Brillouin's frequency of optical fiber can answer variation by fiber optic temperature in the OPLC to be measured 9 of different moments measurement
Software storage in analyzer 6.OPLC 9 to be measured is in different flat pressure fibre strains detecting system schematic diagram synchronous with optical fiber attenuation
As shown in figure 4, the corresponding fiber optic temperature curve of different electric current as shown in figure 5, under different electric currents in OPLC 9 to be measured optical fiber not
It is as shown in Figure 6 with Brillouin's frequency curve under flat pressure effect.
Step 4) fiber optic temperature strain analysis instrument 6 can measure to obtain after different electric current lower conductors are stablized in OPLC 9 to be measured
The temperature of Brillouin's frequency of optical fiber different location, Brillouin's frequency and synchronization optical fiber, the relationship of strain such as formula (1) institute
Show:
vB(T, ε)=vB(T0,ε0)+CυT(T-T0)+Cυε(ε-ε0) (1)
Wherein vB(T0,ε0)、vB(T, ε) is fiber optic temperature strain analysis instrument conductor no current, conductor in OPLC 9 to be measured
There are optical fiber Brillouin scattering optical frequency shift amount, ε in the cable measured after electric current and conductor temperature stabilization0, ε be OPLC 9 to be measured in
Conductor no current, conductor have the strain value of optical fiber in the cable measured after electric current and conductor temperature stabilization, and T0, T are to be measured
Conductor no current, conductor have the temperature value of optical fiber in the cable measured after electric current and conductor temperature stabilization, C in OPLC 9vT、
CvεRespectively Brillouin shift temperature coefficient, the Brillouin shift coefficient of strain；Measure not by fiber optic temperature strain analysis instrument 6
With the Brillouin's frequency and the temperature value that measures of thermocouple 1 under electric current, can be calculated is having current conditions lower conductor temperature
The difference of fibre strain and fibre strain when no current after degree is stablized.Under different electric currents in OPLC 9 to be measured optical fiber in different flattenings
Fibre strain difference curve under power effect is as shown in Figure 7.
The optical fiber attenuation generated in 9 operational process of OPLC to be measured is obtained by optical power, and conductor is without electricity in OPLC 9 to be measured
Circulate it is out-of-date obtain an optical power, optical power under this condition can be obtained in conductor after thering is electric current to stablize by rear conductor temperature,
Can be obtained after calculating optical power conductor have electric current by when optical fiber attenuation, the relationship such as formula of optical power and optical fiber attenuation
(2) shown in:
Wherein P1The optical power value measured when being conductor no current in OPLC 9 to be measured, P2For conductor in OPLC 9 to be measured
There is the optical power value measured after electric current and conductor temperature stabilization.Under different electric currents in OPLC 9 to be measured optical fiber in different flattenings
Optical fiber attenuation curve under power effect is as shown in Figure 8.
Claims (6)
1. the device that a kind of OPLC flattens experiment fibre strain and synchro measure of decaying, which is characterized in that including thermocouple (1),
Thermocouple recorder (2), light source (3), light power meter (4), optical power recorder (5), fiber optic temperature strain analysis instrument (6), pressure
Power testboard (7) and strong current generator (8)；Wherein,
When measurement, OPLC (9) to be measured passes through strong current generator (8), and OPLC to be measured (9) both ends conductor connects, and is formed and is powered
Circuit；Thermocouple (1) is embedded on OPLC to be measured (9), for measuring the temperature of different moments OPLC to be measured (9)；OPLC to be measured
(9) it is arranged on pressure testboard (7), flat pressure is applied to OPLC to be measured (9) by pressure testboard (7)；OPLC (9) to be measured
In the both ends of optical fiber connect respectively with light source (3) and light power meter (4), form a light-path；It is another in OPLC (9) to be measured
The both ends of a piece optical fiber are connected with two ports of fiber optic temperature strain analysis instrument (6) respectively, form another light-path；It is logical
Super-high-current generator (8) adjusts the size of the electric current generated to OPLC to be measured (9)；Thermocouple (1) and light power meter (4) are respectively
It is connect with thermocouple recorder (2), optical power recorder (5), thermocouple recorder (2) is for storing thermocouple (1) in difference
The temperature value of OPLC to be measured (9) each structure that the moment measures；Light power meter (4) is used to acquire the optical power value of different moments, and
The optical power measured every time is stored by optical power recorder (5)；Fiber optic temperature strain analysis instrument (6) is for acquiring different moments
OPLC to be measured (9) different location Brillouin's frequency.
2. a kind of OPLC according to claim 1 flattens the device of experiment fibre strain and synchro measure of decaying, feature
It is, OPLC (9) to be measured includes the oversheath (906) and twining package tape (905) set gradually from outside to inside, and is arranged wrapped
With the light unit (903) and several conductors (901) in (905), insulation (902) are provided in the circumferential direction of each conductor (901),
And it is provided with filler (904) between conductor (901) and conductor (901) and between conductor (901) and light unit (903).
3. a kind of OPLC according to claim 1 flattens the device of experiment fibre strain and synchro measure of decaying, feature
It is, pressure testboard (7) includes clamp column (701), pressure gauge (702), pressure gauge fixed block (703), removable steel plate
(704), fixed station (705) and control panel (706)；Wherein, pressure gauge (702) connect and consolidates with pressure gauge fixed block (703)
Due on clamp column (701), removable steel plate (704) are fixed on pressure gauge (702) bottom, clamp column by fixture
(701) lower section is control panel (706) and fixed station (705).
4. a kind of OPLC according to claim 1 flattens the device of experiment fibre strain and synchro measure of decaying, feature
It is, light source (3) is monochromatic source, the white light for being 1550nm for generation wavelength.
5. a kind of OPLC according to claim 1 flattens the device of experiment fibre strain and synchro measure of decaying, feature
It is, light power meter (4) is photodetector, and optical wavelength range that can be detected is in 185-25000nm.
6. a kind of OPLC according to claim 1 flattens the device of experiment fibre strain and synchro measure of decaying, feature
It is, fiber optic temperature strain analysis instrument (6) is the optical time-domain analyzer based on Brillouin scattering, i.e. fiber optic temperature strain analysis
Instrument.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014068A (en) * | 2020-08-31 | 2020-12-01 | 国家电网有限公司 | Method and device for detecting fiber core of optical cable and computer readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014068A (en) * | 2020-08-31 | 2020-12-01 | 国家电网有限公司 | Method and device for detecting fiber core of optical cable and computer readable storage medium |
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