CN107643136A - A kind of monitoring method using Fibre Optical Sensor to extra large pipe safe condition - Google Patents
A kind of monitoring method using Fibre Optical Sensor to extra large pipe safe condition Download PDFInfo
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- CN107643136A CN107643136A CN201710778237.6A CN201710778237A CN107643136A CN 107643136 A CN107643136 A CN 107643136A CN 201710778237 A CN201710778237 A CN 201710778237A CN 107643136 A CN107643136 A CN 107643136A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
- 239000000835 fiber Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000003287 optical effect Effects 0.000 title claims description 31
- 239000002184 metal Substances 0.000 claims description 17
- 239000002689 soil Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 3
- 230000003862 health status Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The present invention relates to pipeline detection technique field, more particularly to a kind of monitoring method using fiber-optic grating sensor to submerged pipeline and platform standpipe safe condition.Due to wind, wave, the effect gushed, the extra large pipe in shallow sea area Aerial Submarine Pipeline, platform standpipe and deep-sea can be made to form vibration and sway, cause extra large tube failure, damage.The real-time stress monitor of dangerous position to whole pipeline is realized using fiber grating sensing system, effectively prevention can be realized to unsafe condition according to real time data.The fiber-optic grating sensor advantage such as have passive, electromagnetism interference, measurement data accurate, can carry out accurate measurements for a long time.
Description
Technical field
It is more particularly to a kind of to use fibre optical sensor to submerged pipeline and platform the present invention relates to pipeline detection technique field
The monitoring method of standpipe safe condition.
Background technology
In Offshore Engineering, submerged pipeline carries UNICOM's platform, single-point and land oil depot, continuous conveying oil（Gas）
Effect, be offshore oil（Gas）The chief component of field Development and Production system, it is most quick at present, most safety and economic and reliable
Offshore oil and gas means of transportation.With deepening continuously for Marine oil and gas resource exploitation, the laying scale of submarine pipeline is increasing.
To prevent wave, the influence of the marine environment to submarine pipeline stability such as gushing, typically the pipeline to being laid is needed in shallow-layer marine site
Carry out the fixing means such as filling.But due to the unstability of sea bed, easily there is different degrees of hanging phenomenon in submarine pipeline,
Wave, gush under effect, cause submarine pipeline vibration and sway, bending；Riser portions close to platform can also produce under wind wave action
The larger phenomenon of stress；Wave, vibrate in addition, the standpipe and horizontal tube in deep-sea marine site can equally exist in wave and in the presence of gushing
Situation.It is above-mentioned in wave, gush and the effect of ocean and man-made environment to submarine pipeline such as cast anchor, can cause certain part of pipeline by
Power is larger, or even the failure phenomenon such as causes to bend, is broken, and produces ill effect.Pipe detection is often using magnetics, acoustics etc. at present
Inner detection technique detects in carrying out, and can not realize the on-line real time monitoring during production run.Conventional electricity senses, ultrasound
There is active, electromagnetic interference, corrosion-resistant defect in the sensing modes such as ripple, thus make in marine environment in real-time monitoring process
Many deficiencies and limitation during be present.In recent years, emerging optical fiber sensing technology with its is passive, not by electromagnetic interference, survey
Amount stabilization is accurate to wait prominent advantage to be filled up by extensive use, instead of answering for other detection techniques such as many electricity sensings
Use scene.
The content of the invention
The invention aims to solve the deficiencies in the prior art, there is provided one kind is using optical fiber sensing technology to extra large Guan An
The monitoring method of full situation, the difficulty that submerged pipeline can be overcome to monitor in real time, realizes the stress to subsea horizontal pipeline and standpipe
The accurate measurement lasting etc. data stabilization.
The present invention realizes above-mentioned purpose by e measurement technology scheme as described below.
It is a kind of main to device involved by the monitoring method of submerged pipeline and platform standpipe safe condition using Fibre Optical Sensor
Including：Fiber Bragg grating strain sensor, fiber-optical grating temperature sensor, thin sheet of metal tooth button, optical cable, data-signal storage and place
Manage demodulated equipment, wherein fiber-optical grating temperature sensor plays a part of temperature-compensating, so will and fiber grating strain sensor
Device is used cooperatively, a pair of each measuring points placement, and both can also be encapsulated to integral sensor, as an integral arrangement
In each monitoring point.
Using exposed part level sea pipe, transition bent tube section as main monitoring object, using fiber grating answer
Become sensor measurement stress data, fiber-optical grating temperature sensor temperature-compensating, have waterproof anti-corrosion outside sensor and optical cable
Hermetically sealed, respectively there are two pins packaged sensor entirety both sides, for being welded on extra large pipe.
Thin sheet of metal tooth button as shown in Figure 1 is designed, fixation of the optical cable for long range transmission on pipeline, according to light
Cable external diameter selects the sheet metal of proper width, and both sides reserve pin so that welding, centre slightly bend up shape so that optical cable leads to
Cross, thin sheet of metal tooth button can be welded on submarine pipeline one by one when cloth cable, can also be shifted to an earlier date on the outer package of optical cable
Positioning assembling, is welded on extra large pipe in cloth cable, in the part charity lightguide cable link that pipeline buries, need to dig up again afterwards
Seabed soil makes pipeline spill upper end, in order to charity lightguide cable link, welding thin sheet of metal tooth button, after the completion of need will be original
Seabed soil landfill goes back.
For the overhanging portion that pipeline stress is larger, intensive arrangement monitoring point, each all circumferentially 90 ° uniform 4 of monitoring position
Individual strain transducer, as shown in Figure 2；Hanging, more dangerous naked section may occur quickly for some, can be optionally
Circumferential uniform 2 or 3 sensors, dangerous section can also excavate ttom of pipe ooze, circumferentially 4 sensors, then by seabed
Soil is returned and buried；For horizontal tube and the transition bent tube section of standpipe, all at three monitorings of charity：Close to horizontal tube, close to standpipe
And among bend pipe, each all circumferential 90 ° of uniform 4 strain transducers in monitoring position, as shown in Figure 3；For Riser portions
Pipeline, finite element analysis is carried out to it, after drawing the stress distribution situation of standpipe, according to stress distribution and standpipe local environment
Actual conditions choose some stress concentration points that can most reflect standpipe health status, carry out specific aim monitoring, such as pipe clamp bearing,
Circumferential 90 ° of uniform 4 strain transducers are all answered at each monitoring position, as shown in Figure 4.
Position and each section of overhanging portion independently monitored and the exposed portions such as extra large pipe standpipe is curved, horizontal curved, outpost of the tax office constraint
Divide and all draw an independent optical fiber respectively, connected in advance above, position the sensor assembled needed for this section, and be used as one
Individual passage accesses (FBG) demodulator, parallel with one another between each section, and more optical cables of overlay segment in parallel are bundled together, as a cable
Line is fixed, and introduces control room, as shown in Figure 5.
It is as described above for the monitoring of in-service extra large pipe, technical scheme；Managed for the sea that plan is newly laid, along extra large pipe
Seabed condition selection monitoring point, the installation of monitoring system can be as a part for pipe laying engineering, and pipe installation is simultaneously
Carry out, the specific installation method such as sensor arrangement, cable arrangement is same as above, after the completion of subsidiary monitoring to pipeline and thereon set
It is standby to carry out landfill fixation together.
The data message of all monitoring points is after the completion of demodulation calculates, and after being included into messaging software system, terminal is soft
The function setting of part system includes data acquisition, data storage and playback, data are shown, provides interface, pipeline with other systems
The amplitude of oscillation is shown, pipe stress Dynamic Announce, status early warning and condition diagnosing etc..
Brief description of the drawings
Fig. 1 thin sheet of metal teeth button fixes optical cable schematic diagram.
Fig. 2 sensor levels pipelines are layouted schematic diagram.
Fig. 3 sensor bend pipes are layouted schematic diagram.
Fig. 4 sensor riser clamps bearing layouts schematic diagram.
Fig. 5 cable runs schematic diagrames.
Embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail.
Level sea pipe, the transition portion of horizontal tube and standpipe of exposed part are main detection object.Using fiber grating
Strain transducer, separately it is aided with fiber-optical grating temperature sensor and carries out temperature-compensating, there must be water-tight corrosion-proof outside sensor and optical cable
Lose hermetically sealed, respectively there are two pins sensor both sides, for being welded on extra large pipe.
Optical cable is fixed on extra large pipe using thin sheet of metal tooth button.Thin sheet of metal tooth button both sides reserve pin for welding,
Centre slightly bends up shape so that optical cable is by as shown in Figure 1.Thin sheet of metal tooth button is assemblied on the outer package of optical cable in advance,
It is welded on one by one on submarine pipeline when cable runs, pipe-line of postponing draws optical cable the Central Control Room being connected on platform
It is interior.A thin sheet of metal tooth button is welded to fix optical cable in the exposed part interval suitable distance of pipeline；In the portion that pipeline buries
When lightguide cable link is applied in distribution, first diging up some seabed soil makes pipeline spill upper end, in order to charity lightguide cable link, welding
Thin sheet of metal tooth button, this part interval suitable distance or so weld a sheet metal tooth button, after the completion of need original seabed mud
Soil landfill goes back.
For some it is likely to that hanging, more dangerous naked section occurs quickly, in view of its exposed a part of pipe shaft,
Optionally circumferential uniform 2 or 3 sensors, dangerous section it can also can first excavate ttom of pipe ooze, circumferentially 4 sensings
Device, then seabed soil is returned and buried, it is easy to tackle the swing of pipeline, can also be pushed away according to the stress value that circumferential multiple sensors are measured
The swaying direction of disconnected pipeline.
For the overhanging portion that pipeline stress is larger, intensive arrangement monitoring point, each all circumferentially 90 ° uniform 4 of monitoring position
Individual strain transducer, as shown in Fig. 2 it is easy to tackle the swing of pipeline, can also according to the stress value that circumferential 4 sensors are measured
Infer the swaying direction of pipeline.
For the pipeline of transition portion, monitoring location is slightly closeer, each charity three in each transition bend pipe position of pipeline
At individual monitoring：Among horizontal tube, close standpipe and bend pipe, each all circumferential 90 ° of uniform 4 strain sensings in monitoring position
Device, as shown in figure 3, being easy to tackle the swing of pipeline, pipeline can also be inferred according to the stress value that circumferential 4 sensors are measured
Swaying direction.
For the pipeline of Riser portions, finite element analysis is carried out to it, after drawing the stress distribution situation of standpipe, according to should
Power is distributed and the actual conditions of standpipe local environment choose some stress concentration points that can most reflect standpipe health status, enters the hand-manipulating of needle
Property is monitored, as shown below such as pipe clamp bearing, circumferential 90 ° of uniform 4 strain transducers are all answered at each monitoring position, such as
Shown in Fig. 4, it is easy to tackle the swing of pipeline, the stress value measured according to circumferential 4 sensors can also infer the swing of pipeline
Direction.
Position or each section of independent overhanging portion monitored and the exposed portions such as extra large pipe standpipe is curved, horizontal curved, outpost of the tax office constraint
Divide and draw an independent optical fiber respectively, connect all sensors needed for this section in advance thereon, and be used as a passage
(FBG) demodulator is accessed, it is parallel with one another between each section.It is in cable runs, more optical cables of overlay segment in parallel are bundled together, make
It is fixed for a cable, introduces control room.
To collect stress signal demodulation after be sent into computer shown, store and various Dynamic Announces, early warning,
Alarm etc..Reach accurate measurement, the purpose of safety in production.For the test data required for follow-up management system, set
Interface is attached, and can be carried out data transmission by LAN.
The data message of all monitoring points is after the completion of demodulation calculates, after being included into messaging software system, by monitoring
Pipeline section split window individually show, facilitate engineering safety personnel to check data at any time.Function setting needed for terminal software system
Shown including data acquisition, data storage and playback, data and other systems provide interface, the pipeline amplitude of oscillation is shown, pipe stress
Dynamic Announce, status early warning and condition diagnosing etc..
Although the specific embodiment of the present invention is described above in conjunction with accompanying drawing, the invention is not limited in upper
The embodiment stated, above-mentioned embodiment is only schematical, be not it is restricted, this area it is common
Technical staff in the case of present inventive concept and scope of the claimed protection is not departed from, may be used also under the enlightenment of the present invention
By make it is many in the form of, these are belonged within protection scope of the present invention.
Claims (7)
1. a kind of monitoring method using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition, it is characterised in that involved
And device mainly includes：Fiber Bragg grating strain sensor, fiber-optical grating temperature sensor, thin sheet of metal tooth button, optical cable, data letter
Number storage and processing demodulated equipment, wherein fiber-optical grating temperature sensor plays a part of temperature-compensating, so will be with optical fiber light
Grid strain transducer is used cooperatively, a pair of each measuring points placement, both can also be encapsulated to integral sensor, as one
Individual integral arrangement is in each monitoring point.
2. according to a kind of monitoring side using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition described in claim 1
Method, be further characterized in that, using exposed part level sea pipe, transition bent tube section as main monitoring object, using light
Fiber grating strain transducer measures stress data, fiber-optical grating temperature sensor temperature-compensating, has outside sensor and optical cable anti-
Water anticorrosion is hermetically sealed, and respectively there are two pins packaged sensor entirety both sides, for being welded on extra large pipe.
3. according to a kind of monitoring side using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition described in claim 1
Method, it is further characterized in that, designs thin sheet of metal tooth button as shown in Figure 1, optical cable the consolidating on pipeline transmitted for long range
It is fixed, the sheet metal of proper width is selected according to cable outer diameter, both sides reserve pin for welding, centre slightly bend up shape with
For optical cable by the way that thin sheet of metal tooth button can be welded on submarine pipeline one by one when cloth cable, can also be shifted to an earlier date in optical cable
Assembling is positioned on outer package, is welded on again in cloth cable on extra large pipe afterwards, in the part charity lightguide cable link that pipeline buries, is needed
Diging up some seabed soil makes pipeline spill upper end, in order to charity lightguide cable link, welds thin sheet of metal tooth button, after the completion of
Original seabed soil need to be filled and gone back.
4. according to a kind of monitoring side using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition described in claim 1
Method, be further characterized in that, for the overhanging portion that pipeline stress is larger, intensive arrangement monitoring point, it is each monitoring position it is all circumferential
90 ° of uniform 4 strain transducers, as shown in Figure 2；Hanging, more dangerous naked section may occur quickly for some, can
Ttom of pipe ooze, circumferentially 4 sensors can also be excavated with optionally circumferential uniform 2 or 3 sensors, dangerous section,
Seabed soil is returned again and buried；For horizontal tube and the transition bent tube section of standpipe, all at three monitorings of charity：Close horizontal tube,
Among standpipe and bend pipe, each all circumferential 90 ° of uniform 4 strain transducers in monitoring position, as shown in Figure 3；For vertical
The pipeline of tube portion, finite element analysis is carried out to it, after drawing the stress distribution situation of standpipe, according to stress distribution and standpipe institute
The actual conditions for locating environment choose some stress concentration points that can most reflect standpipe health status, carry out specific aim monitoring, such as manage
Block bearing, circumferential 90 ° of uniform 4 strain transducers are all answered at each monitoring position, as shown in Figure 4.
5. according to a kind of monitoring side using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition described in claim 1
Method, it is further characterized in that, position and each section of overhanging portion independently monitored such as extra large pipe standpipe is curved, horizontal curved, outpost of the tax office constraint
An independent optical fiber is all drawn respectively with exposed part, is connected in advance above, is positioned the sensor assembled needed for this section,
And a passage access (FBG) demodulator is used as, and it is parallel with one another between each section, more optical cables of overlay segment in parallel are bundled together, make
It is fixed for a cable, introduces control room, as shown in Figure 5.
6. according to a kind of monitoring side using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition described in claim 1
Method, it is further characterized in that, it is as described above for the monitoring of in-service extra large pipe, technical scheme；Managed for the sea that plan is newly laid, according to
Seabed along extra large pipe ground condition selection monitoring point, the installation of monitoring system can be as a part for pipe laying engineering, and pipeline
Laying is carried out simultaneously, and the specific installation method such as sensor arrangement, cable arrangement is same as above, after the completion of to pipeline and thereon incidentally
Monitoring device carry out landfill fixation together.
7. according to a kind of monitoring side using Fibre Optical Sensor to submerged pipeline and platform standpipe safe condition described in claim 1
Method, it is further characterized in that, the data message of all monitoring points is included into messaging software system after the completion of demodulation calculates
Afterwards, the function setting of terminal software system includes data acquisition, data storage and playback, data are shown, is provided with other systems
Interface, the pipeline amplitude of oscillation are shown, pipe stress Dynamic Announce, status early warning and condition diagnosing etc..
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Cited By (4)
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| CN110030957A (en) * | 2019-05-16 | 2019-07-19 | 广州欧纳电子科技有限公司 | Submerged pipeline landfill depth monitoring device and method |
| CN112178425A (en) * | 2020-09-14 | 2021-01-05 | 中国海洋大学 | Rapid fixing device and laying method for optical fiber sensor for deep-sea mixed transport vertical pipe |
| CN112683185A (en) * | 2019-10-18 | 2021-04-20 | 三菱重工业株式会社 | Optical fiber detection device and method for detecting mechanical strain using optical fiber detection device |
| CN117870954A (en) * | 2024-03-07 | 2024-04-12 | 中国电建集团华东勘测设计研究院有限公司 | Self-elevating platform risk monitoring system based on dense distributed optical fiber sensing |
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| CN112178425A (en) * | 2020-09-14 | 2021-01-05 | 中国海洋大学 | Rapid fixing device and laying method for optical fiber sensor for deep-sea mixed transport vertical pipe |
| CN117870954A (en) * | 2024-03-07 | 2024-04-12 | 中国电建集团华东勘测设计研究院有限公司 | Self-elevating platform risk monitoring system based on dense distributed optical fiber sensing |
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