CN103700223B - Oil gas pipeline torrential flood disaster monitoring system - Google Patents
Oil gas pipeline torrential flood disaster monitoring system Download PDFInfo
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Abstract
The invention relates to a mountain torrent disaster monitoring system for an oil and gas pipeline. Fixing a metal flat plate (1) on the bank side of a river channel, installing a protective cylinder (3) arranged in the river channel on the metal flat plate (1), fixing a fiber grating water level sensor (4) in the wall of the protective cylinder (3), installing a reference pile (5) for fixing a fiber grating flow velocity sensor (6) at the bottom of the river channel, installing a fiber grating vibration sensor (8) on the monitoring section of an oil-gas pipeline (7), introducing the water level sensor (4), the flow velocity sensor (6) and the fiber grating vibration sensor (8) into an optical fiber junction box (9) and connecting the optical fiber junction box with an optical cable I (10); in the monitoring station, an optical cable I (10) is sequentially connected with an optical switch (11), a demodulator (12) and a lower computer (13), and the lower computer (13) is connected with an upper computer (16) of an office through a wireless communication module I (14) and a wireless communication module II (15). It has high spatial resolution, low cost, high safety and high efficiency.
Description
Technical field
The present invention is a kind of oil and gas pipes mountain flood monitoring system based on fiber grating sensing technology, is related to linear velocity
Measurement, the measurement of liquid level, the measurement of mechanical vibration, general safety device and tubing technical field.
Background technology
Mountain flood refers to flood, mud-rock flow and the landslide disaster that Mountainous Areas are caused by rainfall.With global in recent years
Climate warming causes extreme weather exception, decades not to meet heavy rain even not seen once in a hundred years and happen occasionally.China's middle and small river is many
Many, drainage area is in 100～1000km2River have 50,000 a plurality of；China is located in Over East Asia Monsoon Area, Mountain Area heavy rain frequency simultaneously
Send out, ravines and guillies criss-cross, topographic and geologic complicated condition, along with Human dried bloodstains（Indiscriminate felling of trees, cut into a mountain and cut slope, water conservancy irrigation）'s
Increasingly sharpen, initial land form, landforms are formed with larger disturbance destruction, causes mountain flood to occur frequently.
Long-distance oil ＆ gas pipeline and railway, highway etc., it is typical line-shape construction, these line-shape constructions are inevitably
Affected by river, raceway groove, such as washed away, river-bed deepened, embankment collapse, bank erosion and river diversion；In hypsography
Area, these engineerings also by flowing water caused by the erosion caused by sloping surfaces affected, such as caused by domatic soil erosion, surface subsidence, pipe trench are drawn
Empty, domatic collapse, fort bank collapses；Mountain area and in front of the mountains area's middle and small river, the catchment area caused because the slope of river is larger is big,
Current are anxious, it is violent etc. to wash away, and make riverbed usually expose basement rock, boulder and cobble and erratic boulder.In this kind of river course during roughing-in, pipe
If without build-in in stable basement rock or when buried depth is inadequate, once Freshets roar down from the mountains, these block stones of top layer and erratic boulder are in height in road
The next motion of fast flow action, pipeline are very likely gone out by water, form the hanging pipeline section being not directly contacted with ground surface, i.e.,
Tube span.Under certain condition, when current flow through pipeline, the wake zone of pipeline produces vortex, and is vortexed with certain frequency
Alternately discharge on rear side of the pipeline, make pipeline be subject to a following current to wave making resistance and fluctuating force perpendicular to flow direction, cause
Pipeline vibration, this phenomenon be commonly referred to as vortex-induced vibration, and it is to affect the service life of flood effect underground pipelines, cause tube span
One of principal element of fatigue failure.
Flood damage brings huge risk and loss to China's oil and gas pipes industry.Ma Huining such as loess plateau is managed
Road, after being constructed and put into operation, flood damage continuously emerges, and hanging, disconnected event of running affairs once occurs for several times.The puckery peaceful blue appendix of the Northwest
Road mountain flood also very frequently, often results in pipeline and exposes and vacantly.In July, 2004, Qinghai Province Ledu area bust heavy rain, stone
Cephalic groove breaks out mountain torrents, and pipeline is gone out by surging flood, the state for making pipeline hanging in naked pipe, and the big erratic boulder of flood entrainment is strong
Impulse piping.In July, 2010, loyal force pipeline bulky level ground area experience heavy showers attack.Heavy rain makes Lang Ping rivers, and the flood swelled in volume, along river course
There is dangerous situation in the loyalty force pipeline many places that lays, pipe long-distance drift pipe at wherein two, dew pipe at, separately have 30 many places water conservancy project protections
Barricade is destroyed by rush of water.In August, 2010, the flood swelled in volume for Sichuan Deyang Shi Tingjiang, causes river levee to be destroyed by rush of water, large area occurs and inrush, make
Into the hanging 400m of blue Chengdu-Chongqing Products Pipeline branch line, it is completely exposed under current scour.In March, 2011, the second west to east gas pipeline project exhales figure
There is flood in wall county Hei Wa gullys, cause this section of coombe bottom incision, about 140m pipelines to be rushed out, and the floating of pipeline airbreak occurs,
In critical condition.
Numerous middle small watershed mountain floods is faced, China's pipeline operator often takes positive Hydraulic Protection Project
Safeguard procedures, but these measures are the drawbacks of there is also some, are high cost first, next to that protection works also not " labor is forever
Ease ", the uncertain factor of design and construction is more, furthermore the cycle length of casing pipe protection and improvement opportunity are difficult to grasp.And monitor
It is then a kind of efficient, inexpensive prophylactico-therapeutic measuress.
At present, China's middle and small river mountain torrent monitoring early warning technology is also in the starting stage, due to most of middle and small river station
Reticular density is less than normal, and it is anxious to add the short stream in middle and small river source, the features such as mountain torrents have that intensity is big, last short, difficult forecast.Traditional mountain torrents
Using mechanical type or electromagnetic sensor more than disaster water regime monitoring, for the former, its technology relative maturity common are float-type
Water-level gauge, differential pressure water level gauge, mechanical rotor formula current meter etc., but due to being limited by frame for movement itself, its measurement error is big,
Precision is low；For the latter, radar type liquid-level gauge, ultrasonic current metre, acoustic Doppler velocimetry etc., certainty of measurement is common are
Higher, easy to use, but high cost, and easy electromagnetic wave interference.In addition, for landslide, avalanche, surface collapse, frozen swell and melt settlement,
Under the extensive soil body migration such as movable seismogenic fault, the safety monitoring of buried pipeline is more focused on answering body stress
The monitoring of change, and the failure mode of the lower pipeline of mountain torrents effect is mainly shown as that the vortex-induced vibration that Coupling effect of seepage rock deformation causes causes to manage
There is fatigue failure in road, simple monitoring body ess-strain can not meet the requirement of the lower pipeline security protection of mountain torrents effect.
For the vibration monitoring of hardware, traditional mechanical type, electric class vibrating sensor（Such as piezoelectricity, magnetoelectricity and electric vortex type etc.）Deposit
Sensitivity low, measurement range is little, transmission range is near and the shortcomings of fault in material, is not suitable for the long-term long-range of heavy construction
Real-time monitoring.The Distributed Optical Fiber Sensing Techniques for rising in recent years（With BOTDR as representative）Existing in terms of mechanical vibration monitoring
Certain application, but there is not yet Fiber Bragg Grating technology is applied to the report of mountain torrents effect underground pipelines vortex-induced vibration monitoring.
The engineerings such as highway, railway, power station, dam and urban flood defence body are applied to current mountain flood monitoring and warning technology more
System builds, also not to mountain torrents and its under the influence of buried oil and gas pipes carry out the combined monitoring of system.Carry out pipeline mountain flood
Combined monitoring, can not only judge in advance mountain torrents formed before water level, flow velocity and crest discharge, moreover it is possible to find out current scour to pipeline
Influence mode and degree, it is often more important that can grasp steel pipe occur under flood percussion vortex-induced vibration condition and
Changing Pattern, judges the safe condition of pipeline, and the determination for preventing and treating opportunity provides foundation.Information more than synthesis, just can be to mountain
The pipeline of area stream valley floor section carries out safe early warning, in advance the precarious position for forming time, scale and pipeline of forecast mountain torrents,
Design implementation for scheme of disaster reduction provides foundation.
Fiber grating is fiber optic passive device with the fastest developing speed in recent years.It is the light sensitive characteristic using fiber optic materials
A kind of space periodicity index distribution that sets up on the fibre core of optical fiber, its role is to be modified or controlled light in the region
Dissemination mode.Except have ordinary optic fibre electromagnetism interference, size is little, lightweight, intensity is high, high temperature resistant, the spy such as corrosion-resistant
Point is outer, and fiber grating also has its unique characteristic：It is easy to optical coupling, coupling loss is little, be easy to wavelength-division multiplex etc..Thus make
Obtaining fiber grating has wide prospect in the field such as optical-fibre communications and Fibre Optical Sensor.As a kind of emerging of photon research field
Technology, is subject to common concern, various countries' researcher to actively develop with fiber grating as the sensing technology of pedestal sensor part in recent years
Relevant research work.At present, the physical quantity that the fiber-optic grating sensor that has reported can be monitored has：Temperature, strain, pressure, position
Shifting, pressure, torsional angle, moment of torsion (torsional stress), acceleration, electric current, voltage, magnetic field, frequency, concentration, thermal coefficient of expansion, vibration etc.,
A portion fiber grating sensing system practical application.
Fiber Bragg Grating FBG（Fiber Bragg Grating）It is a kind of most simple, most common fiber grating.It is
One section of refractive index is in periodically variable optical fiber, and its refractive index modulation depth and screen periods are typically all constant.Temperature, strain
Change can cause the cycle of Fiber Bragg Grating FBG and the change of refractive index so that the reflectance spectrum of Fiber Bragg Grating FBG and
Transmission spectrum changes.By the change of the reflectance spectrum and transmission spectrum of detection fiber Bragg grating, it is possible to obtain corresponding
Temperature and strain information, here it is with Fiber Bragg Grating FBG measurement temperature and strain ultimate principle.
From coupled mode theory, wherein transmit guided mode can be coupled to separately by uniform Fiber Bragg Grating FBG
One guided mode for transmitting in opposite direction and form narrowband reflection, peak reflectance wavelength（Bragg wavelength）λBFor：
λB=2neffΛ （1）
In formula：λBFor bragg wavelength；neffEffective refractive index for spread fiber pattern；Λ is grating pitch.
The centre wavelength and temperature and the relation of strain of grating can be obtained to formula (1) differential：
In formula：αfThermal coefficient of expansion for optical fiber；Thermo-optical coeffecients of the ξ for fiber optic materials；PeBullet spectrum for fiber optic materials
Number.By formula (2）Understand, strain stress is to cause bragg wavelength due to the flexible and elasto-optical effect in Fiber Bragg Grating FBG cycle
Change, and temperature T is to cause the change of bragg wavelength due to Fiber Bragg Grating FBG thermal expansion effects and thermo-optic effect.
Fiber grating can be made into various senser elements, be used widely in sensory field.With traditional electric transducer phase
Than fiber-optic grating sensor has oneself uniqueness：（1）Transducing head structure is simple, small volume, lightweight, shape variable,
It is suitable in the various large scale structures of embedment, the stress of measurable inside configuration, strain and structural damage etc., stability, reproducible；
（2）There is natural compatibility between optical fiber, be easily connected with optical fiber, light loss is low, spectral characteristic good, reliability is high；（3）Tool
Have non-conducting, on measured medium affect little, again have anticorrosive, electromagnetism interference the characteristics of, be suitable for work in adverse circumstances
Make；（4）Light and handy soft, multiple gratings can be write in an optical fiber, constitute sensor array, with wavelength-division multiplex and time division multiplex
System combines, and realizes distributed sensing；（5）Metrical information is with Wavelength-encoding, thus fiber-optic grating sensor is not by light source
Light-intensity variation, optical fiber connection and the impact of the factors such as coupling loss, optical polarization change, have stronger capacity of resisting disturbance；（6）
High sensitivity, high degree of resolution.
Compared with widely used Brillouin light domain reflectometer BOTDR, the advantage of fiber-optic grating sensor has：（1）Right
Measurement point can be accurately positioned, high resolution；（2）Low cost；（3）Transducing part can be processed, be encapsulated so as to be more suitable for existing
The adverse circumstances of field.
Due to these advantages, in Geotechnical Engineering field, fiber-optic grating sensor is easy to imbed in Rock And Soil in which
The strain in portion and temperature carry out high-resolution and large-range measuring, technical advantage clearly, be especially embodied in can obtain long-term,
Reliable Rock And Soil deformation data, yet there are no fiber grating sensing technology for mountain stream River Valley Region mountain torrents rainwater feelings and
The report of flood percussion underground pipelines vortex-induced vibration frequency combined monitoring.
Content of the invention
The purpose of the present invention is a kind of spatial resolution height of invention, low cost, oil safely and effectively based on fiber grating
Feed channel mountain flood monitoring system.
The present invention proposes a kind of oil and gas pipes mountain flood monitoring and warning system based on fiber grating sensing technology.System
System adopts fiber grating sensing technology, carries out joint prison to mountain stream River Valley Region mountain torrents regimen and the pipeline under flood percussion
Survey, Contents for Monitoring includes the monitoring of river water level, mountain torrents flow velocity and pipeline vortex-induced vibration.And construct monitoring system, it is achieved that number
According to real-time automatic collecting, remote transmission and automatically analyze.
Oil and gas pipes mountain flood Contents for Monitoring based on fiber grating sensing technology proposed by the present invention includes three parts：
The monitoring of water level monitoring, flow monitoring and pipeline vortex-induced vibration, is respectively adopted fiber-optic grating sensor real time on-line monitoring, optical fiber light
Grid early warning content includes the early warning of the crest discharge to mountain torrents and pipeline vortex-induced vibration frequency.
Oil and gas pipes mountain flood monitoring principle based on fiber grating sensing technology is as shown in Figure 1.Including water level monitoring
Device, flow monitoring device, pipeline vortex-induced vibration monitoring device, field monitoring station, the receiving terminal-host computer of office.Will
The bolt 2 of metal plate 1 is fixed on river course bank, installs protection cylinder 3, and protection cylinder 3 is placed in downwards river on metal plate 1
In road, fiber grating level sensor 4 is fixed in 3 wall of protection cylinder with bolt, in bottom of river channel reference for installation stake 5, in stake
Fixed optical fiber optical grating flow speed sensor 6, installs optical fiber raster vibration sensor 8 in the monitoring cross section of oil and gas pipes 7, then will
Level sensor 4, flow sensor 6 introduce optical Fiber Closure 9 in the lump with vibrating sensor 8, with the optical cable 10 for causing monitoring station
Connection, in monitoring station, optical cable 10 is connected with photoswitch 11, and photoswitch 11 is connected with fiber Bragg grating (FBG) demodulator 12, (FBG) demodulator 12
It is connected with slave computer 13,13 pretreated data of slave computer are transmitted by wireless communication module 14, and wireless communication module 15 connects
Receive host computer 16;Oil and gas pipes mountain flood is monitored with said apparatus.
Fiber grating level sensor 4, optical fiber optical grating flow speed sensor 6 and optical fiber raster vibration sensor 8 are by mountain torrents water
Position, flow velocity of river and pipeline vortex-induced vibration signal pass to photoswitch 11 through optical cable I 10, pass through the demodulation of (FBG) demodulator 12 after photoswitch 11
To slave computer 13, slave computer 13 calls self-editing program, control photoswitch 11 and (FBG) demodulator 12, realizes collection the logarithm of data
According to carrying out pretreatment;Pretreated data are transmitted by wireless communication module I 14, wireless communication module II 15 is received
Position machine 16, host computer 16 are further analyzed process, obtain mountain torrents by river water level and mountain torrents flow relocity calculation to data
Crest discharge, judge whether the crest discharge in the region has reached forecast warning value, and combine pipeline vortex-induced vibration frequency with
The relative analyses of the eigentone of pipeline itself, judge the safe condition of pipeline under mountain torrents percussion.The process of data
Mainly completed by software, software flow is as shown in Figure 3.Fiber Bragg grating (FBG) demodulator is mainly gathered by slave computer data prediction
Optical wavelength data are converted into strain data, and host computer after receiving the data, is sorted data into first, according to rainfall, water level and stream
Speed calculates mountain torrents total amount and flood peak, and which is combined with pipeline vortex-induced vibration signal, judge time of mountain torrents formation, scale and
The safe condition of the lower pipeline of flood erosion effect.
The composition of oil and gas pipes mountain flood monitoring system as shown in figure 5, the system be divided into collection in worksite emission system and
Long-range reception analysis system, specifically includes Level monitor, flow monitoring device, pipeline vortex-induced vibration monitoring device, scene
Monitoring station, the receiving terminal (host computer) of office.
The overall of oil and gas pipes mountain flood monitoring system is constituted as shown in Figure 1.The bolt 2 of metal plate 1 is fixed on
River course bank, on metal plate 1 installs protection cylinder 3, and protection cylinder 3 is placed in river course downwards, with bolt by fiber grating
Level sensor 4 is fixed in barrel, in bottom of river channel reference for installation stake 5, fixes optical fiber optical grating flow speed sensor 6 in stake,
Optical fiber raster vibration sensor 8 is installed in the monitoring cross section of oil and gas pipes 7, then by level sensor 4, flow sensor 6 with
Vibrating sensor 8 introduces optical Fiber Closure 9 in the lump, is connected with the optical cable I 10 for causing monitoring station, in monitoring station, optical cable I 10 with
Photoswitch 11 connects, and photoswitch 11 is connected with fiber Bragg grating (FBG) demodulator 12, and (FBG) demodulator 12 is connected with slave computer 13, and slave computer 13 is pre-
Data after process are transmitted by wireless communication module I 14, and wireless communication module II 15 receives host computer 16；Use said apparatus
Combined monitoring is carried out to oil and gas pipes mountain flood.
Fiber grating level sensor 4, optical fiber optical grating flow speed sensor 6 and optical fiber raster vibration sensor 8 are by urban river water
Position, mountain torrents flow velocity and pipeline vortex-induced vibration signal pass to photoswitch 11 through optical cable I 10, pass through the demodulation of (FBG) demodulator 12 after photoswitch 11
To slave computer 13, slave computer 13 calls self-editing program, control photoswitch 11 and (FBG) demodulator 12, realizes collection the logarithm of data
According to carrying out pretreatment;Pretreated data are received upper by the transmission of wireless communication module I 14, wireless communication module II 15
Machine 16, host computer 16 are further analyzed process to data, obtain mountain torrents by river water level and mountain torrents flow relocity calculation
Crest discharge, judges whether the crest discharge in the region has reached forecast warning value, and combine pipeline vortex-induced vibration frequency and its
Natural frequency relative analyses result, judges the safe condition of pipeline under mountain torrents souring.
The electric principle of the system is as shown in fig. 6, monitor three type optical fiber gratings of water level, flow velocity and pipeline vortex-induced vibration respectively
The PC joints of sensor -- fiber grating level sensor 4, optical fiber optical grating flow speed sensor 6 and optical fiber raster vibration sensor 8
It is connected with the PC joints of light permutator 11 with optical cable I 10, the R232 of light permutator 11 connects the R232 interfaces of slave computer 13,
The PC joints of light permutator 11 connect the CH1 ends of fiber Bragg grating (FBG) demodulator 12SM125, fiber Bragg grating (FBG) demodulator 12SM125's
LAN port connects the LAN port of slave computer 13, and the R232 ports of slave computer 13 meet I 14 Siemens of GPRS wireless communication modules
The R232 ports of MC35i, GPRS wireless communication modules I 14 through antenna GSM, GPRS network, by GPRS wireless communication modules II 15
Antenna GSM is connected to the R232 of host computer 16 by R232 after receiving, the output of host computer 16 is terminated the VGA ends of display by VGA.
The output signal of three type optical fiber grating sensors of water level, flow velocity and pipeline vortex-induced vibration is turned on one by one through photoswitch
Transmit to fiber Bragg grating (FBG) demodulator 12, fiber Bragg grating (FBG) demodulator 12 demodulates the centre wavelength displacement of each fiber-optic grating sensor
Transmit to slave computer 13, the cycle of 11 Continuity signal of photoswitch is controlled by slave computer 13.Slave computer 13 carries out pretreatment to data,
And by process after data be defeated by GPRS wireless communication modules I 14, GPRS wireless communication modules I 14 by slave computer 13 calculate each
Monitoring variable is transferred to the host computer 16 positioned at office by public's cordless communication network, and host computer is by self-programmed software to data
Process is analyzed, is shown by display.
Wherein:
River water level monitoring device is as shown in Figure 2.Center in upper and lower two end faces of rustless steel containment housing 17
A cylinder 18 is fixed, a fiber Bragg grating strain sensor I 19 is pasted on 18 surface of cylinder, and will by optical cable II 20
Signal causes optical Fiber Closure 9, and optical Fiber Closure 9 is connected with optical cable I 10, and finally causes monitoring station.
The fiber Bragg grating strain sensor I 19 selects temperature compensating type fiber Bragg grating strain sensor.
Mountain torrents flow monitoring device is as shown in Figure 3.By venturi-type throttle pipe 21, conduit I 22, conduit II 23 and optical fiber
Grating pressure sensing mechanism constitutes, and fiber bragg grating pressure sensing mechanism is by lucite seal box 24, closed aluminum foil pipe 25, steel pin
26th, the composition such as equi intensity cantilever 27, temperature compensating type fiber Bragg grating strain sensor II 28 and optical cable III 29.Closed aluminum foil pipe
25 free ends by steel pin 26 with cantilever beam 27 are rigidly connected.By a temperature compensating type fiber Bragg grating strain sensor II 28
27 surface of cantilever beam is pasted onto, and signal is caused by optical Fiber Closure 9 by optical cable III 29, optical Fiber Closure 9 is connected with optical cable I 10
Connect, and finally cause monitoring station.
The fiber Bragg grating strain sensor II 28 selects temperature compensating type fiber Bragg grating strain sensor.
Pipeline vortex-induced vibration monitoring device as shown in figure 4, fix a metallic rod 31 on 30 side inwall of pedestal, bar
Free end fixes a metal derby 32, a fiber Bragg grating strain sensor III 33 is pasted on 31 surface of metallic rod, and is passed through
Signal is caused optical Fiber Closure 9 by optical cable IV 34, and optical Fiber Closure 9 is connected with optical cable I 10, and finally causes monitoring station.
The fiber Bragg grating strain sensor III 33 selects temperature compensating type fiber Bragg grating strain sensor.
Field monitoring station is arranged on the valve chamber near river course, including several parts as follows：
（1）The optical Fiber Closure of monitoring station and each sensor and it is connected optical cable, for by water level, flow velocity and pipeline whirlpool exciting
Dynamic sensor signal concentration of transmissions is to monitoring station；
（2）Light permutator, as sensor used by pipeline mountain flood monitoring is a lot, signalling channel is numerous, it is impossible to one
Secondary be connected on fiber Bragg grating (FBG) demodulator, with light permutator by each channel signal change successively give (FBG) demodulator analysis；
（3）Fiber Bragg grating (FBG) demodulator, for demodulating the centre wavelength displacement of each sensor；
（4）Computer and program, for controlling the frequency of (FBG) demodulator demodulation, and the centre wavelength position that (FBG) demodulator is demodulated
Shifting amount is calculated as each monitoring variable automatically, these monitoring variables is sent to GPRS wireless communication modules, and receives GPRS wireless telecommunications
The signal of module is controlled；
（5）GPRS wireless communication modules, each monitoring variable for calculating computer are transferred to by cordless communication network
The server of office is located at, the signal of server is also connect, is sent to computer.
The operation principle of the system is：When there is to continue rainfall in the mountain stream river valley region that is monitored, pipeline river along the line
Road water level, river flow change, and the amount of increase change for monitoring river water level by level sensor 4, by flow-velocity sensing
Device 6 is measured to mountain torrents flow velocity；Based on the crest discharge that river water level, mountain torrents flow velocity can calculate mountain torrents；Meanwhile, mountain torrents
Continuous erosion effect can cause pipeline 7 to produce vortex-induced vibration, measure its frequency of vibration by the vibrating sensor 8 on body；Logical
Connection optical cable I 10 is crossed, by the sensor signal concentration of transmissions of each position in pipeline mountain torrent monitoring region to light permutator 11,
Light permutator 11 changes each channel signal successively to fiber Bragg grating (FBG) demodulator 12, and fiber Bragg grating (FBG) demodulator 12 demodulates each biography
Sensor wavelengths centered wavelength shift amount simultaneously senses the middle cardiac wave demodulated (FBG) demodulator to field computer 13, field computer 13
Long displacement amount is calculated as each monitoring variable automatically, and monitoring variable is sent to live GPRS wireless communication modules I 14, GPRS channel radios
News module I 14 sends terminal server 16 by cordless communication network transmission signal to GPRS wireless communication modules II 15, eventually
Each crest discharge and pipeline vibration frequency are contrasted by end server 16 with alarm threshold value, provide warning when necessary.
The advantage of the system shows：
（1）Propose to mountain stream river valley area Storm Flood and its under the influence of the oil and gas pipes method that carries out combined monitoring, disclose
River water level change, mountain torrents change in flow with and flood erosion effect underground pipelines vortex-induced vibration change with optic fiber grating wavelength
Between linked character；The safe early warning of oil and gas pipes under the influence of mountain stream river valley area Storm Flood is carried out with multi objective；
（2）Fiber grating sensing technology is applied to pipeline mountain flood monitoring, the technology is anti-interference, corrosion-resistant, be easy to
Networking etc. is with the obvious advantage；The technology is easily achieved automatic real time on-line monitoring, and cost is relatively low；
（3）Water level monitoring, using the fiber grating level sensor of designed, designed, the hydraulic pressure that river water level change is caused
Change is converted into the movement of sensor internal fiber bragg grating center wavelength；Test wavelength moves size, can deduce water level height；With
Traditional float-type, bubble type, differential pressure type level sensor are compared, and this monitoring method has that sensitivity is high, measurement range is wide, passes
The advantages of defeated distance is remote, can realize the remote real time monitoring to long-distance oil ＆ gas pipeline mountain torrents water level along the line with minimum monitoring point；
（4）Flow monitoring, using the optical fiber optical grating flow speed sensor of designed, designed, based on venturi-type throttle pipe, will
Mountain torrents change in flow is converted into pressure change, and by equi intensity cantilever, pressure difference is converted into sensor internal optical fiber light
The movement of grid centre wavelength；Test wavelength moves size, can calculate the size of mountain torrents flow velocity；The optical fiber optical grating flow speed sensor with
Fiber grating is sensing primitive, without any rotary part, with traditional mechanical rotor formula current meter and ultrasonic current metre, sound
Learn doppler velocimeter compare, this monitoring method have the advantages that high precision, anti-electromagnetic wave interference, can multiple spot distributed, can use
Realize the remote real time monitoring to long-distance oil ＆ gas pipeline mountain torrents flow velocity along the line in minimum monitoring point；
（5）Pipeline vortex-induced vibration is monitored, using the optical fiber raster vibration sensor of designed, designed, using built-in metal bar
Stress is converted into axial strain amount parameters such as amplitude, acceleration, and then is converted into the bragg wavelength change of fiber grating, profit
The measurement that mountain torrents are acted on underground pipelines vortex-induced vibration can be just realized with the knots modification of (FBG) demodulator Detection wavelength；With traditional machinery
Formula, electric class vibrating sensor are compared, and this monitoring method has the advantages that sensitivity is high, measurement range is wide, long transmission distance, can use
The remote real time monitoring to long oil/gas pipe line is realized in minimum monitoring point, has saved cost, decrease equipment installation when
Between and damage to body, the preventing and treating for pipeline mountain flood provides effective foundation, it is ensured that the safety of pipeline.
The simple and direct reliable, purpose of design of present configuration is clearly, flexible for installation, hidden, safe, easy for operation, safeguards
Maintenance is simple, increases the specific aim of oil and gas pipes mountain flood protected working, effectiveness, is economic, practical pipeline mountain torrents
Disaster monitoring device.
The present invention can extensively use the monitoring of the common pipeline flood damages such as the damaged or destroyed by flood of stream road, domatic damaged or destroyed by flood, raised fields ground damaged or destroyed by flood
Early warning, with good application prospect.
Description of the drawings
Fig. 1 oil and gas pipes mountain flood monitoring method schematic diagrams
Fig. 2 level sensor monitoring device pie graphs
Fig. 3 flow sensor monitoring device pie graphs
Fig. 4 vibrating sensor monitoring device pie graphs
Fig. 5 oil and gas pipes mountain flood Fundamentals of Supervisory Systems
Fig. 6 oil and gas pipes mountain flood monitoring system electrical schematic diagrams
Wherein
1 metal plate, 2 bolt
3 protection cylinder, 4 fiber grating level sensor
5 spud pile, 6 optical fiber optical grating flow speed sensor
7- pipeline 8- optical fiber raster vibration sensors
9 optical Fiber Closure, 10 optical cable I
11 photoswitch, 12 (FBG) demodulator
13 slave computer, 14 wireless communication module I
15 wireless communication module, II 16 host computer
17 rustless steel containment housing, 18 cylinder
19 fiber Bragg grating strain sensor, I 20 optical cable II
21 venturi-type throttle pipe, 22 conduit I
23 conduit, II 24 lucite seal box
25 closed aluminum foil pipe, 26 steel pin
27 equi intensity cantilever, 28 fiber Bragg grating strain sensor II
29 optical cable, III 30 pedestal
31 metallic rod, 32 metal derby
33 fiber Bragg grating strain sensor, III 34 optical cable IV
Specific embodiment
Embodiment. this example is a kind of monitoring system, and which is constituted as shown in figs 1 to 6.And in blue Chengdu-Chongqing processed oil pipeline Pu
Ba He, loyal force natural gas line Lang Ping rivers have carried out field test respectively, and the two test sections belong to mountain area Typical Small Watershed
Stream road mountain torrents, flood season Mountainous Heavy Rainfall intensity is big, product conflux networks are fast, river flood rises to fall suddenly suddenly, river source section stream urgency, mountain torrents
Have the characteristics of intensity is big, flood peak is high, magnanimity is concentrated, incision and lateral erosion ability strong, to walking along the street, pipeline, water conservancy project protection facility
Destructive strong.Wherein orchid Chengdu-Chongqing Products Pipeline Pu Ba rivers be located at Gansu Province Longnan City Cheng County Tan rivers township, impacted duct length about 10km,
Drainage area about 25km2；Loyal force pipeline Lang Ping rivers are located at Changyang, hubei Province county Lang Ping towns, impacted duct length about 16km, basin
Area about 100km2.
Oil and gas pipes mountain flood monitoring system
The system is divided into collection in worksite emission system and long-range reception analysis system, specifically includes river water level monitoring dress
Put, mountain torrents flow monitoring device and pipeline vortex-induced vibration monitoring device, field monitoring station, office receiving terminal (upper
Machine).
The overall of oil and gas pipes mountain flood monitoring system is constituted as shown in Figure 1.The bolt 2 of metal plate 1 is fixed on
River course bank, on metal plate 1 installs protection cylinder 3, and protection cylinder 3 is placed in river course downwards, with bolt by fiber grating
Level sensor 4 is fixed in barrel, in bottom of river channel reference for installation stake 5, fixes optical fiber optical grating flow speed sensor 6 in stake,
Optical fiber raster vibration sensor 8 is installed in the monitoring cross section of oil and gas pipes 7, then by level sensor 4, flow sensor 6 with
Vibrating sensor 8 introduces optical Fiber Closure 9 in the lump, is connected with the optical cable I 10 for causing monitoring station, in monitoring station, optical cable I 10 with
Photoswitch 11 connects, and photoswitch 11 is connected with fiber Bragg grating (FBG) demodulator 12, and (FBG) demodulator 12 is connected with slave computer 13, and slave computer 13 is pre-
Data after process are transmitted by wireless communication module I 14, and wireless communication module 15 receives host computer 16, and host computer is to pre- place
Data after reason carry out Treatment Analysis, the safe condition of comprehensive descision pipeline.
The electric principle of the system is as shown in fig. 6, monitor three classes of river water level, mountain torrents flow velocity and pipeline vortex-induced vibration respectively
Fiber-optic grating sensor -- fiber grating level sensor 4, optical fiber optical grating flow speed sensor 6, optical fiber raster vibration sensor 8
PC joints are connected with the PC joints of light permutator 11 with optical cable I 10, the R232 connection slave computers 13 of light permutator 11
R232 interfaces, the PC joints of light permutator 11 connect the CH1 ends of fiber Bragg grating (FBG) demodulator 12SM125, fiber Bragg grating (FBG) demodulator
The LAN port of 12SM125 connects the LAN port of slave computer 13, and the R232 ports of slave computer 13 connect I 14 west gate of GPRS transmission module
The R232 ports of sub- MC35i, GPRS transmission module I 14 through antenna GSM, GPRS network, by I 15 antenna of GPRS wireless communication modules
GSM is connected to the R232 of host computer 16 by R232 after receiving, the output of host computer 16 is terminated the VGA ends of display by VGA.
The output signal of three type optical fiber grating sensors of river water level, mountain torrents flow velocity and pipeline vortex-induced vibration is through photoswitch
Conducting is transmitted to fiber Bragg grating (FBG) demodulator 12 one by one, and fiber Bragg grating (FBG) demodulator 12 demodulates the middle cardiac wave of each fiber-optic grating sensor
Long displacement amount is transmitted to slave computer 13, and the cycle of 11 Continuity signal of photoswitch is controlled by slave computer 13.Slave computer 13 enters to data
Row pretreatment, and by process after data be defeated by GPRS wireless communication modules I 14, GPRS wireless communication modules I 14 are by slave computer
The 13 each monitoring variables for calculating are transferred to the host computer 16 positioned at office by public's cordless communication network, and host computer is by self-editing
Software is analyzed process to data, is shown by display.
Wherein:
Level monitor is as shown in Fig. 2 fix in the center of upper and lower two end faces of rustless steel containment housing 17
One temperature compensating type fiber Bragg grating strain sensor 19 is pasted on 18 surface of cylinder, and passes through optical cable by one cylinder 18
Signal is caused optical Fiber Closure 9 by II 20, and optical Fiber Closure 9 is connected with optical cable I 10, and finally causes monitoring station.
In above-mentioned monitoring device：
Fiber grating level sensor：Fiber-optic grating sensor from designed, designed encapsulation；
Temperature compensating type fiber Bragg grating strain sensor：BGK-FBG-4150；
Light permutator selects the grand SUM-FSW of light；
SM125 selected by grating demodulation instrument.
Flow monitoring device is as shown in figure 3, fix a metallic rod 31, the free end of bar is solid on 30 side inwall of pedestal
One temperature compensating type fiber Bragg grating strain sensor III 33 is pasted on 31 surface of metallic rod, and is led to by a fixed metal derby 32
Cross optical cable IV 34 and signal is caused optical Fiber Closure 9, optical Fiber Closure 9 is connected with optical cable I 10, and finally causes monitoring station.
In above-mentioned monitoring device：
Optical fiber optical grating flow speed sensor：Fiber-optic grating sensor from designed, designed encapsulation；
Temperature compensating type fiber Bragg grating strain sensor：BGK-FBG-4150；
Light permutator selects the grand SUM-FSW of light；
SM125 selected by grating demodulation instrument.
Pipeline vortex-induced vibration monitoring device as shown in figure 4, fix a metallic rod 18 on 17 side inwall of pedestal, bar
Free end fixes a metal derby 19, and a temperature compensating type fiber Bragg grating strain sensor I 19 is pasted on 18 table of metallic rod
Face, and signal is caused by monitoring station by optical cable II 20；The slave computer 13 of monitoring station calls self-editing program, controls fiber grating
(FBG) demodulator 12, realizes the real-time automatic collecting of data.
In above-mentioned monitoring device：
Optical fiber raster vibration sensor：Fiber-optic grating sensor from designed, designed encapsulation；
Temperature compensating type fiber Bragg grating strain sensor：BGK-FBG-4150；
Light permutator selects the grand SUM-FSW of light；
SM125 selected by grating demodulation instrument.
Field monitoring station is arranged on selected pipeline mountain stream river valley monitoring field along the line, as shown in figure 1, connecing including optical fiber
Line box 9, connection optical cable I 10, light permutator 11, fiber Bragg grating (FBG) demodulator 12, lower seat in the plane 13, GPRS wireless communication modules I 14；
The signal of each fiber-optic grating sensor collection is connected to the photoswitch 11 of monitoring station by optical cable I 10, and the output of photoswitch 11 connects optical fiber
Grating demodulation instrument 12, the output of fiber Bragg grating (FBG) demodulator 12 connect lower seat in the plane 13, and the lower output of seat in the plane 13 connects GPRS wireless communication modules I
14.
The signal of each fiber-optic grating sensor collection is connected to the photoswitch 11 of monitoring station, light permutator 11 by optical cable 10
Each channel signal is changed successively to fiber Bragg grating (FBG) demodulator 12, fiber Bragg grating (FBG) demodulator 12 demodulates each fiber-optic grating sensor
Centre wavelength displacement give lower seat in the plane 13, lower seat in the plane 13 calculates automatically each monitoring variable and is defeated by GPRS wireless communication modules I 14
And receive the signal of GPRS wireless communication modules I 14 and be controlled, GPRS wireless communication modules I 14 by lower seat in the plane 13 calculate each
Monitoring variable by public's cordless communication network be transferred to the receiving terminal host computer 16 positioned at office be further analyzed with
Process；The signal that GPRS wireless communication modules II 15 receive to receive host computer 16 can also be passed through with seat in the plane 13 at present.
Wherein：
Light permutator：From the grand scientific and technological SUM-FSW of light；
Fiber Bragg grating (FBG) demodulator：From SM125；
Host computer and program：From magnificent IPC-610 is ground, program is self-editing；
GPRS transmission module 14：Siemens MC 35i
The receiving terminal for being located at office includes following 2 parts：
（1）GPRS receiver modules 15, for receiving the monitoring variable that field monitoring station GPRS wireless communication module I 14 sends,
And host computer 16 is transferred to, can also give scene GPRS wireless communication module I 14 transmission feedback command；
（2）Host computer 16 and program, for the signal of download terminal GPRS wireless communication modules II 15, and caller enters
Row is automatically analyzed, and analysis result is contrasted with alarm threshold value, implements to report to the police when necessary.
The operation principle of the system is：When there is to continue rainfall in the mountain stream river valley region that is monitored, pipeline river along the line
Road water level, river flow change, the amount of increase change for monitoring river water level by Level monitor 4, are supervised by flow velocity
Survey device 6 to measure mountain torrents flow velocity, then according to water level and the crest discharge of flow relocity calculation mountain torrents, once warn more than mountain torrents
Ring value is reported to the police；Meanwhile, the effect of mountain torrents continuous erosion can cause pipeline 7 to produce vortex-induced vibration, by the vibration on body
Sensor 8 measures its frequency of vibration, and is contrasted with the natural frequency of pipeline itself, judges that pipeline is washed away in mountain torrents and persistently rushes
The lower probability that fatigue failure occurs of brush effect.
By connecting optical cable I 10, by the sensor signal concentration of transmissions of each position in pipeline mountain torrent monitoring region to light
Permutator 11, light permutator 11 change each channel signal successively to fiber Bragg grating (FBG) demodulator 12, fiber Bragg grating (FBG) demodulator
12 demodulate each sensor wavelength centre wavelength displacement and sense to field computer 13, and field computer 13 is by (FBG) demodulator solution
The centre wavelength displacement for recalling is calculated as each monitoring variable automatically, and monitoring variable is sent to live GPRS wireless communication modules I
14, GPRS wireless communication modules I 14 send end by cordless communication network transmission signal to GPRS wireless communication modules II 15
The crest discharge of mountain torrents and pipeline vortex-induced vibration frequency are contrasted by end server 16, terminal server 16 with alarm threshold value, necessary
When provide warning.
Wherein：
GPRS wireless communication modules II 15：From Siemens MC 35i；
Host computer 16 and program：Host computer is selected and grinds magnificent IPC-610；Program is self-editing.
With said system when being monitored, when monitored area occurs to continue rainfall, using fiber grating level sensor
The river water level change of 4 pairs of each monitoring points of device is measured, using the mountain torrents stream of 6 pairs of each monitoring points of optical fiber optical grating flow speed sensor
Speed is measured, based on river water level and mountain torrents flow velocity the two measured values, using formula（12）The flood peak of mountain torrents can be calculated
Flow, and then the mountain torrents for reaching warning value are forecast；Meanwhile, mountain area continues the mountain torrents of heavy showers initiation can be by buried pipeline
Go out, form the hanging pipeline section being not directly contacted with ground surface, under water flow fluctuation drag effect, cause pipeline that whirlpool exciting occurs
Dynamic, pipeline vortex-induced vibration frequency is measured by body optical fiber raster vibration sensor 8, and the intrinsic frequency with pipeline itself
Rate is analyzed, and judges that pipeline occurs the probability of fatigue failure.
Through prolonged monitoring, this example is easy to build monitoring system, it is easy to which mountain area Typical Small Watershed regimen and mountain torrents wash away
The real-time automatic collecting analysis and long-range issue of the lower pipeline combined monitoring data of effect, long-range automatic alarm in real time.Avoid numerous
Trivial artificial gathered data, improves the precision of early warning, reduces time of fire alarming, while can also carry out accurately determining to warning place
Position, this is most important to taking for pipeline emergency measure.
Claims (10)
1. a kind of oil and gas pipes mountain flood monitoring system, is characterized in that the system is divided into collection in worksite emission system and remotely connects
Contracture analysis system, specifically include Level monitor, flow monitoring device, pipeline vortex-induced vibration monitoring device, field monitoring station,
Receiving terminal-the host computer of office；
The totality of oil and gas pipes mountain flood monitoring system is configured to：Metal plate (1) bolt (2) is fixed on river course bank
Side, installs protection cylinder (3) metal plate (1) is upper, and protection cylinder (3) is placed in river course downwards, with bolt by fiber grating
Level sensor (4) is fixed in protection cylinder (3) wall, in bottom of river channel reference for installation stake (5), fixes optical fiber optical grating flow speed in stake
Sensor (6), installs optical fiber raster vibration sensor (8), in the monitoring cross section of oil and gas pipes (7) then by fiber grating water
Level sensor (4), optical fiber optical grating flow speed sensor (6) introduce optical Fiber Closure in the lump with optical fiber raster vibration sensor (8)
(9), it is connected with the optical cable I (10) for causing monitoring station, in monitoring station, optical cable I (10) is connected with light permutator (11), light turns
Change switch (11) to be connected with fiber Bragg grating (FBG) demodulator (12), fiber Bragg grating (FBG) demodulator (12) is connected with slave computer (13), slave computer
(13) pretreated data are transferred to host computer (16) by wireless communication module I (14), wireless communication module II (15)；
Fiber grating level sensor (4), optical fiber optical grating flow speed sensor (6) and optical fiber raster vibration sensor (8) are by river course
Water level, mountain torrents flow velocity and pipeline vortex-induced vibration signal pass to light permutator (11) through optical cable I (10), after light permutator (11)
Slave computer (13) is reached through fiber Bragg grating (FBG) demodulator (12) demodulation, slave computer (13) calls self-editing program, control light conversion to open
(11) and fiber Bragg grating (FBG) demodulator (12) is closed, the collection of data is realized and pretreatment is carried out to data；Pretreated data are led to
Cross wireless communication module I (14), wireless communication module II (15) and be transferred to host computer (16), host computer (16) enters to data
The analyzing and processing of one step, the crest discharge for obtaining mountain torrents by river water level and mountain torrents flow relocity calculation, judges region to be monitored
Whether crest discharge has reached forecast warning value, and combines pipeline vortex-induced vibration frequency and its natural frequency relative analyses result,
Judge the safe condition of pipeline under mountain torrents souring.
2. a kind of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that the oil and gas pipes mountain
The principle of disaster monitoring system is shaken for fiber grating level sensor (4), optical fiber optical grating flow speed sensor (6) and fiber grating
The PC joints of dynamic sensor (8) are connected with the PC joints of light permutator (11) with optical cable I (10), light permutator (11)
The R232 interfaces of R232 connections slave computer (13), PC joints connection fiber Bragg grating (FBG) demodulator (12) of light permutator (11)
The CH1 ends of SM125, the LAN port of LAN port connection slave computer (13) of fiber Bragg grating (FBG) demodulator (12) SM125, slave computer
(13) R232 ports connect the R232 ports of I (14) Siemens MC 35i of GPRS wireless communication modules, GPRS wireless communication modules I
(14) through antenna GSM, GPRS network, host computer is connected to by R232 after being received by II (15) antenna GSM of GPRS wireless communication modules
(16) R232, the output of host computer (16) are terminated the VGA ends of display by VGA；
The output signal of three type optical fiber grating sensors of water level, flow velocity and pipeline vortex-induced vibration is turned on one by one through light permutator
Transmit to fiber Bragg grating (FBG) demodulator (12), fiber Bragg grating (FBG) demodulator (12) demodulates the centre wavelength position of each fiber-optic grating sensor
Shifting amount is transmitted to slave computer (13), and the cycle of light permutator (11) Continuity signal is controlled by slave computer (13)；Slave computer (13)
Data are carried out with pretreatment, and by process after data be defeated by GPRS wireless communication modules I (14), GPRS wireless communication modules I
(14) each monitoring variable that slave computer (13) is calculated is transferred to the host computer positioned at office by public's cordless communication network
(16), host computer (16) is analyzed process by self-programmed software to data, is shown by display.
3. a kind of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that the water level monitoring dress
It is set to：A cylinder (18) is fixed in the center of upper and lower two end faces of rustless steel containment housing (17), by an optical fiber
Grating strain transducer I (19) is pasted on cylinder (18) surface, and signal is caused optical Fiber Closure by optical cable II (20)
(9), optical Fiber Closure (9) is connected with optical cable I (10), and finally causes monitoring station；The fiber Bragg grating strain sensor I (19)
Select temperature compensating type fiber Bragg grating strain sensor.
4. a kind of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that the flow monitoring dress
Put and be made up of venturi-type throttle pipe (21), conduit I (22), conduit II (23) and fiber bragg grating pressure sensing mechanism, optical fiber
Grating pressure sensing mechanism is by lucite seal box (24), closed aluminum foil pipe (25), steel pin (26), equi intensity cantilever
(27), fiber Bragg grating strain sensor II (28) and optical cable III (29) are constituted；Closed aluminum foil pipe (25) by steel pin (26) with etc.
The free end of intensity cantilever beam (27) is rigidly connected；One temperature compensating type fiber Bragg grating strain sensor II (28) is pasted onto
Equi intensity cantilever (27) surface, and signal is caused by optical Fiber Closure (9) by optical cable III (29), optical Fiber Closure (9) with
Optical cable I (10) connects, and finally causes monitoring station；The fiber Bragg grating strain sensor II (28) selects temperature compensating type optical fiber light
Grid strain transducer.
5. a kind of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that pipeline whirlpool exciting
Dynamic monitoring device is：A metallic rod (31) is fixed on the inwall of pedestal (30) side, and the free end of metallic rod fixes a gold
One fiber Bragg grating strain sensor III (33) is pasted on metallic rod (31) surface, and passes through optical cable IV (34) by category block (32)
Signal is caused optical Fiber Closure (9), optical Fiber Closure (9) is connected with optical cable I (10), and finally causes monitoring station；The light
Fiber grating strain transducer III (33) selects temperature compensating type fiber Bragg grating strain sensor.
6. a kind of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that the field monitoring station
The valve chamber being arranged near river course, including several parts as follows：
(1) monitoring station, the optical Fiber Closure of each sensor and optical cable, water level, flow velocity and pipeline vortex-induced vibration sensor are believed
Number concentration of transmissions is to monitoring station；
(2) each channel signal is changed successively to the light permutator of fiber Bragg grating (FBG) demodulator analysis；
(3) fiber Bragg grating (FBG) demodulator；
(4) computer and program；
(5) GPRS wireless communication modules.
7. a kind of construction method of oil and gas pipes mountain flood monitoring system as claimed in claim 1, is characterized in that it is divided into water
The construction method of position monitoring device, flow monitoring device and pipeline vortex-induced vibration monitoring device；Metal plate (1) is used bolt
(2) river course bank is fixed on, in the upper installation protection cylinder (3) of metal plate (1), and protection cylinder (3) is placed in river course downwards, is used
Bolt is fixed on fiber grating level sensor (4) in protection cylinder (3) wall, in bottom of river channel reference for installation stake (5), solid in stake
Determine optical fiber optical grating flow speed sensor (6), optical fiber raster vibration sensor (8) is installed, so in the monitoring cross section of oil and gas pipes (7)
Level sensor (4), flow sensor (6) and vibrating sensor (8) are introduced optical Fiber Closure (9) in the lump afterwards, and prison is caused
The optical cable I (10) of survey station connects, and in monitoring station, optical cable I (10) is connected with light permutator (11), light permutator (11) and
Fiber Bragg grating (FBG) demodulator (12) connects, and fiber Bragg grating (FBG) demodulator (12) is connected with slave computer (13), after slave computer (13) pretreatment
Data host computer (16) is transferred to by wireless communication module I (14), wireless communication module II (15), host computer is to pretreatment
Data afterwards carry out Treatment Analysis, the safe condition of comprehensive descision pipeline.
8. a kind of construction method of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that described
The construction method of Level monitor is：One is fixed in the center of upper and lower two end faces of rustless steel containment housing (17)
One temperature compensating type fiber Bragg grating strain sensor I (19) is pasted on cylinder (18) surface, and is passed through by cylinder (18)
Signal is caused optical Fiber Closure (9) by optical cable II (20), and optical Fiber Closure (9) is connected with optical cable I (10), and finally causes monitoring
Stand.
9. a kind of construction method of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that described
The construction method of flow monitoring device is：By venturi-type throttle pipe (21), conduit I (22), conduit II (23) and optical fiber light
The strong sensing mechanism composition of grid voltage, fiber bragg grating pressure sensing mechanism is by lucite seal box (24), closed aluminum foil pipe (25), steel
Pin (26), equi intensity cantilever (27), temperature compensating type fiber Bragg grating strain sensor II (28) and optical cable III (29) are constituted；Close
Close free end of the aluminum foil pipe (25) by steel pin (26) with equi intensity cantilever (27) to be rigidly connected；By a temperature compensating type light
Fiber grating strain transducer II (28) is pasted onto equi intensity cantilever (27) surface, and signal is caused light by optical cable III (29)
Fine rosette (9), optical Fiber Closure (9) are connected with optical cable I (10), and finally cause monitoring station.
10. a kind of construction method of oil and gas pipes mountain flood monitoring system according to claim 1, is characterized in that described
The construction method of pipeline vortex-induced vibration monitoring device is：A metallic rod (31), metal is fixed on the inwall of pedestal (30) side
The free end of bar fixes a metal derby (32), and a temperature compensating type fiber Bragg grating strain sensor III (33) is pasted on gold
Category bar (31) surface, and signal is caused by optical Fiber Closure (9), optical Fiber Closure (9) and optical cable I (10) by optical cable IV (34)
Connection, and finally cause monitoring station.
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| CN201210366606.8A CN103700223B (en) | 2012-09-28 | 2012-09-28 | Oil gas pipeline torrential flood disaster monitoring system |
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| CN201210366606.8A CN103700223B (en) | 2012-09-28 | 2012-09-28 | Oil gas pipeline torrential flood disaster monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104933832A (en) * | 2015-07-17 | 2015-09-23 | 成都汉康信息产业有限公司 | Mountain torrent disaster monitoring system capable of giving an alarm timely and accurately |
| CN106225883B (en) * | 2016-09-09 | 2024-03-15 | 北京国信华源科技有限公司 | Flood beacon |
| CN106679582B (en) * | 2017-01-04 | 2018-11-20 | 大连海事大学 | A kind of dynamic monitoring system and its monitoring method of the ship lock back rod based on strain |
| CN109764244B (en) * | 2018-12-26 | 2020-08-18 | 成都熊谷油气科技有限公司 | Oil and gas pipeline disaster emergency treatment method based on mobile phone signal LBS and big data |
| CN112252269A (en) * | 2020-10-30 | 2021-01-22 | 北京中地华安地质勘查有限公司 | Slope protection method and slope protection device |
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| JP2002256525A (en) * | 2001-02-28 | 2002-09-11 | Sangaku Renkei Kiko Kyushu:Kk | River flood anticipating system |
| KR101214300B1 (en) * | 2006-06-30 | 2012-12-20 | 주식회사 케이티 | Landside monitoring system using wireless sensor network |
| CN101667327B (en) * | 2008-09-03 | 2011-08-03 | 中国石油天然气股份有限公司 | Pipeline landslide deep displacement monitoring and early warning method and system and construction method of system |
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| CN202904818U (en) * | 2012-09-28 | 2013-04-24 | 中国石油天然气股份有限公司 | Oil gas pipeline torrential flood disaster monitoring system |
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