CN208107666U - A kind of device based on leakage of pipe monitored by infrasonic wave - Google Patents
A kind of device based on leakage of pipe monitored by infrasonic wave Download PDFInfo
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- CN208107666U CN208107666U CN201820488427.4U CN201820488427U CN208107666U CN 208107666 U CN208107666 U CN 208107666U CN 201820488427 U CN201820488427 U CN 201820488427U CN 208107666 U CN208107666 U CN 208107666U
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Abstract
The utility model relates to a kind of devices based on leakage of pipe monitored by infrasonic wave, including retention mechanism, signal processor and time synchronization server, communication module and the terminal server for binding round the retention mechanism set on oil-gas pipeline, the monitored upstream point and monitored down point in the oil-gas pipeline that need to be monitored are arranged, piezoelectric film sensor is set to retention mechanism inner wall and connect with signal processor line, and signal processor and terminal server are through communication module communication connection.Pipe leakage point is calculated after signal processor, the processing of time synchronization server analysis in the infrasound signal generated when gas oil pipe leakage；Piezoelectric film sensor is very sensitive to dynamic stress, high sensitivity, and monitoring distance reduces the cost of installation monitoring device up to 3~5km；It is fixed in such a way that retention mechanism hoop is set to oil-gas pipeline, without punching, screw thread on oil-gas pipeline or in such a way that other are contacted with oil gas in pipeline, installation is simple and convenient, and does not damage to oil-gas pipeline.
Description
Technical field
The utility model belongs to line leakage technical field, is let out more particularly to one kind based on pipe monitored by infrasonic wave
The device of leakage.
Background technique
With the continuous improvement that the high speed development of industry and people's life require, petroleum, the use of natural gas are more and more wider
It is general, generate therewith be transfer oil, natural gas pipeline be also distributed more and more extensive, the end of the year 2016, the land length in China is defeated
Oil-gas pipeline 12.3 × 104km of total kilometrage, planning the year two thousand thirty will be more than 20 × 104km；Petroleum, natural gas line are in longtime running
In the process, it because itself material defect cracks, trachoma, because corrosion occurs to rot, is destroyed because of external force and generates cracking, because stealing gas hair
Raw gas leakage etc., causes extreme loss to economic construction, causes high risks to safe operation, causes to ambient enviroment great broken
It is bad.
According to statistics, there is the generation of a large amount of oil-gas pipeline accidents both at home and abroad；Oil is played in the U.S. 432 since statistical analysis 2010
Product pipeline accident and 238 natural gas line accidents, the failure cause of ranking front three are respectively：Corrosion (107, account for
25%), tube body/weld material failure (96, account for 22%) and equipment failure (75, account for 17%)；Tube body/weld material failure
(56, account for 24%) excavate damage (52, account for 22%) and corrode (43, account for 18%).Canadian crude, natural gas line
Height is respectively failure cause in proportion：Internal corrosion, damage from third-party and outer corrosion；Wherein, crude oil pipeline failure cause accounts for
Than being respectively 21%, 20%, 16%；Natural gas line failure cause accounting is respectively 53%, 15%, 12%.Britain pipeline master
Wanting failure cause includes outer burn into external disturbance and boxing seam defect.Pipe leakage thing occurred altogether from 2006~2015 years for China
Part 134 rises, and drilling hole of oil stolen is most important Failure Factors, and manufacturing defect is taken second place, and construction quality occupies third position, and accounting is respectively
50%, 19%, 10%, cause huge casualties and economic loss.Such as：On April 20th, 2010, British Petroleum Company rent
Drilling platforms is on fire from explosion in " the deep water horizon " positioned at the Gulf of Mexico rented, at 1500 meters of seabed, oil of the crude oil from rupture
Pipe is gushed, and oil leak was more than from 24 days and caused extensive crude oil pollution for oil well.On May 4th, 2011, Canada's peace river
Northeast, Oil spills pollute, and from April 29, have revealed about 28000 barrels of crude oil by local pipeline, have caused
Forest Large Scale Death, and bring disaster to the various animals and plants in forest.Illiteracy is passed through by summer in 2011, Exxon Mobil Oil Corp one
Bursting accident occurs suddenly for the oil pipeline in person with power state, leads to the Huang for being estimated to be 4.2 ten thousand gallons of crude oil pollution river water overflow
Stone river.
So even pipe leakage bring casualties and economic loss are avoided to reduce, both at home and abroad to natural gas
Gas pipeline leakage on-Line Monitor Device has put into a large amount of manpower and material resources and has been studied, such as using statistic law, distributed light
Nanofarads, moment modelling, sound wave method, negative pressure wave method, quality volume-average approach etc., method is numerous, but feasibility, accuracy,
Actual effect has little effect.The existing technology using leakage of pipe monitored by infrasonic wave is arranged upstream on the pipeline that need to be detected and examines
Measuring point and detected downstream point are installed at least one infrasonic sensor respectively at upstream detection point and detected downstream point, and are passed
Sensor comes into full contact with pipeline arranged orthogonal and with fluids within pipes, and sensor is mounted on pipeline by valve and connecting flange
It is interior, when any one of pipeline leaks, the collected infrasound letter generated due to pipe leakage of infrasonic sensor
Number it is input to signal processing and analysis system, the specific location that leakage occurs is calculated by analytical calculation, to ensure to find pipe in time
The generation of road leakage.
But the monitoring distance between the existing technical detected downstream point of line leakage is limited, will lead to cost
Increase, failure rate also increase accordingly, monitoring sensitivity is not high, minor leakage can not perceive, and erroneous for installation, security performance compared with
Difference.
Utility model content
Remote, high sensitivity that the purpose of the utility model is to provide a kind of detecting distances, installation are simple and convenient and at low cost
Device based on leakage of pipe monitored by infrasonic wave.
A kind of device based on leakage of pipe monitored by infrasonic wave is set to oil-gas pipeline, including retention mechanism, infrasound pass
Sensor, signal processor, time synchronization server, communication module and terminal server, the retention mechanism hoop are set to the oil
Feed channel is provided with retention mechanism, signal processor in the monitored upstream point and monitored down point of the oil-gas pipeline that need to be monitored
With time synchronization server, the infrasonic sensor is set to the retention mechanism inner wall, and the infrasonic sensor with
The connection of signal processor line, the signal processor and terminal server are through communication module communication connection.
In one embodiment, the retention mechanism includes cranse and locking member, and the cranse hoop is set to the Oil/Gas Pipe
Road, the locking member are set to the cranse interface and the locking cranse.
In one embodiment, the infrasonic sensor is piezoelectric film sensor.
In one embodiment, the communication module includes repeater and wireless communication unit, the repeater with it is described
Signal processor line connects and is set to piezoelectric film sensor periphery, through wireless between the repeater and terminal server
Communication unit communication connection.
In one embodiment, the spacing between the monitored upstream point and monitored down point of the oil-gas pipeline is 3 kms
~5 kms.
In one embodiment, the signal processor includes filter amplification circuit, A/D conversion circuit and microcontroller,
The filter amplification circuit carries out signal identification, filtering interference signals to received infrasound signal and amplifies, the A/
D conversion circuit is converted to digital signal and is sent to the microcontroller, and parser is stored in the microcontroller, described micro-
Controller calculates gas oil pipe leakage point according to the algorithm of storage.
It in one embodiment, further include solar powered module, the solar powered module is set to the communication
It in module and is the signal processor, time synchronization server and communication module power supply.
In one embodiment, the frequency range of the infrasonic sensor is 0.01Hz~20Hz.
The above-mentioned device based on leakage of pipe monitored by infrasonic wave has at least the following advantages：
Infrasonic sensor is fastened in pipeline by retention mechanism in oil-gas pipeline monitored upstream point and monitored down point,
The infrasound signal generated when perceiving gas oil pipe leakage using piezoelectric film sensor, and through signal processor, time synchronization
After server analysis processing, pipe leakage point is calculated；Piezoelectric film sensor is very sensitive to dynamic stress, and sensitivity is non-
Chang Gao can monitor leakage situation in leakage initial stage, the low-down situation of leakage rate；Meanwhile between the test point of upstream and downstream
Distance also can reach 3~5km, monitoring distance is remote, reduces the cost of monitoring device on same pipeline；Moreover, using fastening
The mode that mechanism hoop is set to oil-gas pipeline is fixed, and without punching, screw thread on oil-gas pipeline or uses other and oil gas in pipeline
The mode of contact, installation is simple and convenient, and does not damage to oil-gas pipeline.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of device of the utility model based on leakage of pipe monitored by infrasonic wave；
Fig. 2 is the partial structural diagram of device of the utility model based on leakage of pipe monitored by infrasonic wave；
Fig. 3 is the structural block diagram of device of the utility model based on leakage of pipe monitored by infrasonic wave.
Specific embodiment
The utility model is further described with reference to the accompanying drawing：
A kind of device based on leakage of pipe monitored by infrasonic wave is set to oil-gas pipeline 10, including retention mechanism 20, infrasonic sound
Wave sensor 30, signal processor 40, time synchronization server 50, communication module 60 and terminal server 70, retention mechanism 20
Hoop is set to oil-gas pipeline 10, is provided with retention mechanism in the monitored upstream point and monitored down point of the oil-gas pipeline 10 that need to be monitored
20, signal processor 40 and time synchronization server 50, infrasonic sensor 30 are set to 20 inner wall of retention mechanism, and infrasound
Sensor 30 is connect with 40 line of signal processor, and signal processor 40 and terminal server 70 are through 60 communication connection of communication module.
Specifically, infrasonic sensor 30 is piezoelectric film sensor.
The overall length of one oil-gas pipeline 10 is thousands of kilometers, according to monitoring needs, needs to set on an oil-gas pipeline 10
Set numerous monitoring point, and every two monitoring point setting monitoring device forms one group, with the monitored upstream point of oil-gas pipeline 10 and
Monitored down point is arranged monitoring device and is formed for one group.It is passed through tightly in the monitored upstream point and monitored down point of oil-gas pipeline 10
Gu mechanism 20 fastens infrasonic sensor 30 and pipeline, and infrasonic sensor 30 uses piezoelectric film sensor, using piezoelectricity
The infrasound signal that thin film sensor perception oil-gas pipeline 10 generates when leaking, piezoelectric film sensor perceive leakage infrasound
When signal, the signal perceived is sent to signal processor 40；Meanwhile to record corresponding piezoelectricity thin for time synchronization server 50
Film sensors perceive the time of leakage infrasound signal, and are sent to signal processor 40；Signal processor 40 will receive
Infrasound signal and after the corresponding time is analyzed and processed, result is sent to terminal server 70 through communication module 60, eventually
End server 70 receives corresponding result and sounds an alarm prompt.
Specifically, signal processor 40 includes filter amplification circuit 42, A/D conversion circuit 44 and microcontroller 46, filtering
Amplifying circuit 42 carries out signal identification, filtering interference signals to received infrasound signal and amplifies, A/D conversion circuit
44, which are converted to digital signal, is sent to microcontroller 46, is stored with parser in microcontroller 46：Wherein, formula 1. in：X is leakage point away from Oil/Gas Pipe
The distance of 10 monitored upstream point of road, unit m；L is pipeline overall length, unit m；V is the spread speed of sound wave in the defeated medium of pipe, unit
m/s；Δ t is the time difference that upstream and downstream monitor that point sensor receives pressure wave, unit s.Formula 2. in：K is to be situated between in oil-gas pipeline 10
The volume modulus of matter；ρ is the density of medium, units/kg/m3；E is the elasticity of tubing；D is pipe diameter, unit m；E is
Pipe thickness, unit m；C1For correction factor related with pipeline constraint condition.According to the algorithm stored in microcontroller 46 and
The time that time synchronization server 50 records, the leakage point of each monitoring section of oil-gas pipeline 10 can be calculated, it can be according to leakage point
Automatic positioning, and position error is small, error is less than 100 meters.
The result that signal processor 40 obtains after handling analysis is sent to terminal server 70 through communication module 60,
In, communication module 60 includes repeater 62 and wireless communication unit 64, and repeater 62 connect and is arranged with 40 line of signal processor
In piezoelectric film sensor periphery, repeater 62 be may be provided within the scope of 0~5 meter of piezoelectric film sensor periphery；Repeater 62
Through 64 communication connection of wireless communication unit, such as GPRS between terminal server 70.
Because piezoelectric film sensor is very sensitive to dynamic stress, sensitivity is very high；When stretching or be bent a piece of piezoelectricity
When film (Kynoar PVDF polymeric membrane), an electric signal will be generated between the upper and lower electrode surface of piezoelectric membrane, and
And it is proportional with stretching or curved deformation；General piezoelectric material is being indulged all to presser sensor, but for piezoelectric membrane
When to the power for applying a very little, transverse direction is upper to generate very big stress, and if similarly to the application of piezoelectric membrane large area
When power, the stress of generation can be much smaller；Therefore, piezoelectric membrane is very sensitive to dynamic stress, the sensitivity of the PVDF of 28 μ m-thicks
Representative value is 10~15mV/ microstrain.So declining in certain distance to signal between 10 upstream and downstream monitoring point of oil-gas pipeline
Subtract the reception that will not influence piezoelectric film sensor to signal, between the monitored upstream point and monitored down point of oil-gas pipeline 10
When spacing is 3 kms~5 km, piezoelectric film sensor can also perceive infrasound signal.The pressure of piezoelectric film sensor
Steady sensitivity is up to 0.5%, and strong antijamming capability, anti-interference by physics and signal filters, can be at leakage initial stage, leakage
It measures in low-down situation, monitors leakage situation.
The frequency range of infrasonic sensor 30 is 0.01Hz~20Hz.
Using 20 securing trie piezoelectric thin film sensor of retention mechanism in oil-gas pipeline 10, retention mechanism 20 includes cranse 22 and lock
Tight part 24, the hoop of cranse 22 are set to oil-gas pipeline 10, and locking member 24 is set to 22 interface of cranse and locking cranse 22；Without
Punching, screw thread or in such a way that other are contacted with oil gas in pipeline, do not damage oil-gas pipeline 10 on oil-gas pipeline 10,
The connection type leakage that will not be used because that need to contact with oil gas in pipeline increases Leakage probability, and installs simple and convenient.Cause
Without doing any variation on original oil-gas pipeline 10, to the adaptable of geographical environment, it is suitable for bottom of shallow sea pipeline
Leakage monitoring, desert and Gobi line leakage, interior ground Plain line leakage, interior ground network of rivers line leakage, hills
Area line leakage etc..Certainly, the medium that oil-gas pipeline 10 can convey may include crude oil, product oil, natural gas, lighter hydrocarbons,
Viscous crude etc..
Device based on leakage of pipe monitored by infrasonic wave further includes solar powered module, and solar powered module is set to
It powers on communication module 60 and for signal processor 40, time synchronization server 50 and communication module 60, meets signal processor
40, the power demand of time synchronization server 50 and communication module 60.
The above-mentioned device based on leakage of pipe monitored by infrasonic wave has at least the following advantages：
Pass through retention mechanism 20 in 10 monitored upstream point of oil-gas pipeline and monitored down point and fastens infrasonic sensor 30
In pipeline, the infrasound signal generated when oil-gas pipeline 10 leaks is perceived using piezoelectric film sensor, and through signal processor
40, after 50 analysis of time synchronization server processing, pipe leakage point is calculated；Piezoelectric film sensor to dynamic stress very
Sensitivity, sensitivity is very high, can monitor leakage situation in leakage initial stage, the low-down situation of leakage rate；Meanwhile above and below
The distance between trip test point also can reach 3~5km, and monitoring distance is remote, reduces the cost of monitoring device on same pipeline；And
And fixed in such a way that the hoop of retention mechanism 20 is set to oil-gas pipeline 10, without punching, screw thread or use on oil-gas pipeline 10
Other modes contacted with oil gas in pipeline, installation is simple and convenient, and does not damage to oil-gas pipeline 10.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. a kind of device based on leakage of pipe monitored by infrasonic wave, is set to oil-gas pipeline, which is characterized in that including fastening machine
Structure, infrasonic sensor, signal processor, time synchronization server, communication module and terminal server, the retention mechanism hoop
Set on the oil-gas pipeline, the monitored upstream point and monitored down point of the oil-gas pipeline that need to be monitored be provided with retention mechanism,
Signal processor and time synchronization server, the infrasonic sensor are set to the retention mechanism inner wall, and the infrasonic sound
Wave sensor is connect with signal processor line, and the signal processor and terminal server are through communication module communication connection.
2. the device according to claim 1 based on leakage of pipe monitored by infrasonic wave, which is characterized in that the retention mechanism
Including cranse and locking member, the cranse hoop be set to the oil-gas pipeline, the locking member be set to the cranse interface and
Lock the cranse.
3. the device according to claim 2 based on leakage of pipe monitored by infrasonic wave, which is characterized in that the infrasound passes
Sensor is piezoelectric film sensor.
4. the device according to claim 3 based on leakage of pipe monitored by infrasonic wave, which is characterized in that the communication module
Including repeater and wireless communication unit, the repeater connect with the signal processor line and is set to piezoelectric membrane biography
Sensor periphery, through wireless communication unit communication connection between the repeater and terminal server.
5. the device based on leakage of pipe monitored by infrasonic wave described in any one according to claim 1~4, which is characterized in that
Spacing between the monitored upstream point and monitored down point of the oil-gas pipeline is 3 kms~5 kms.
6. the device according to claim 5 based on leakage of pipe monitored by infrasonic wave, which is characterized in that the signal processing
Device includes filter amplification circuit, A/D conversion circuit and microcontroller, the filter amplification circuit to received infrasound signal into
Row signal identification, filtering interference signals simultaneously amplify, the A/D conversion circuit be converted to digital signal be sent to it is described micro-
Controller, parser is stored in the microcontroller, and the microcontroller calculates oil-gas pipeline according to the algorithm of storage and lets out
Leak source.
7. the device according to claim 6 based on leakage of pipe monitored by infrasonic wave, which is characterized in that further include solar energy
Power supply module, the solar powered module are set on the communication module and take for the signal processor, time synchronization
Business device and communication module power supply.
8. the device according to claim 7 based on leakage of pipe monitored by infrasonic wave, which is characterized in that the infrasound passes
The frequency range of sensor is 0.01Hz~20Hz.
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| CN201820488427.4U CN208107666U (en) | 2018-04-08 | 2018-04-08 | A kind of device based on leakage of pipe monitored by infrasonic wave |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458568A (en) * | 2018-12-13 | 2019-03-12 | 上海因士环保科技有限公司 | A kind of VOCs leakage miniature monitor and on-line monitoring system |
| CN110552686A (en) * | 2019-09-09 | 2019-12-10 | 广州海洋地质调查局 | equipment for detecting leakage of gas conveying pipeline for exploiting seabed natural gas hydrate |
| CN112432061A (en) * | 2019-08-26 | 2021-03-02 | 苏州安能通智能科技有限公司 | Pipeline leakage monitoring method and system |
| CN112594559A (en) * | 2020-11-25 | 2021-04-02 | 中国海洋石油集团有限公司 | Submarine oil pipeline leakage monitoring system and method |
-
2018
- 2018-04-08 CN CN201820488427.4U patent/CN208107666U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458568A (en) * | 2018-12-13 | 2019-03-12 | 上海因士环保科技有限公司 | A kind of VOCs leakage miniature monitor and on-line monitoring system |
| CN112432061A (en) * | 2019-08-26 | 2021-03-02 | 苏州安能通智能科技有限公司 | Pipeline leakage monitoring method and system |
| CN110552686A (en) * | 2019-09-09 | 2019-12-10 | 广州海洋地质调查局 | equipment for detecting leakage of gas conveying pipeline for exploiting seabed natural gas hydrate |
| CN110552686B (en) * | 2019-09-09 | 2022-07-29 | 广州海洋地质调查局 | Equipment for detecting leakage of gas conveying pipeline for exploiting seabed natural gas hydrate |
| CN112594559A (en) * | 2020-11-25 | 2021-04-02 | 中国海洋石油集团有限公司 | Submarine oil pipeline leakage monitoring system and method |
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