CN102900955A - Pipeline leakage on-line monitoring device and method based on f fiber temperature detection - Google Patents
Pipeline leakage on-line monitoring device and method based on f fiber temperature detection Download PDFInfo
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- CN102900955A CN102900955A CN2012104457426A CN201210445742A CN102900955A CN 102900955 A CN102900955 A CN 102900955A CN 2012104457426 A CN2012104457426 A CN 2012104457426A CN 201210445742 A CN201210445742 A CN 201210445742A CN 102900955 A CN102900955 A CN 102900955A
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Abstract
The invention relates to a pipeline leakage on-line monitoring device and method based on f fiber temperature detection, and belongs to the technical field of pipeline monitoring. The fiber temperature detection based pipeline leakage on-line monitoring device is characterized in that a monitoring main machine is communicated with a temperature sensing optical cable in a communication optical cable way or a wireless signal transmission way; and a light signal sent from the laser source of the monitoring main machine is transmitted to a microprocessor through the temperature sensing optical cable, a signal receiver, a wavelength division multiplexer and an amplifier for processing. The fiber temperature detection based pipeline leakage on-line monitoring method comprises the following steps that: the monitoring main machine is communicated with the temperature sensing optical cable in the communication optical cable way or the wireless signal transmission way; the temperature sensing optical cable senses the change of pipeline leakage temperature and generates a reflected light sensing signal for a laser of the laser source; the signal receiver receivers the light signal and transmits to the microprocessor through the wavelength division multiplexer and the amplifier for processing; and the microprocessor analyzes and displays on-line monitored pipeline leakage. The pipeline leakage on-line monitoring device and method based on the fiber temperature detection have the advantages of wide coverage range, high positioning accuracy, short response time, low false alarm rate, real-time on-line detection, and the like.
Description
Technical field
The invention belongs to the pipeline monitoring technical field, particularly relate to a kind of pipe leakage on-Line Monitor Device and method thereof based on optical fiber temperature-measurement.
Background technique
At present, pipeline transport is the main means of transportation of the most important energy of modern society and industrial chemicals-oil, because its cost of transportation is low, broad covered area is so use very extensive.But because the inside and outside corrosion of pipeline, the environment ground descends, and the Pipeline Leak event that the reasons such as unexpected excavation cause happens occasionally, and not only economy is caused serious loss, also is very huge to the harm of environment.
Existing leakage monitoring for oil transport pipeline mainly contains three kinds of methods, the one, when occuring to leak by detecting pipeline, the suction wave that is produced by inside and outside differential pressure carries out leakage monitoring, the shortcoming of this monitoring method is can detect signal when leakage rate in the time of very large (surpassing 1%), and loss is large and the location is accurate not; The 2nd, carry out leakage monitoring by the method for acoustic emission, the shortcoming of this method is the too fast of acoustic attenuation, so the duct length that covers is very limited; The 3rd, judge whether to leak by the detection to the pipe vibration signal, the shortcoming of this method is that monitoring result is subjected to the impact of surrounding environment larger, rate of false alarm is very high.
Summary of the invention
The problem that the present invention exists for solving prior art provides a kind of pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement.
The present invention is based in the temperature-measuring optical fiber of Raman scattering, along containing the anti-Stokes wave very responsive to temperature variation in the reflected light of optical fiber, it is separated as temperature signal with Wavelength Devision Multiplexer, can calculate the distance of leakage by catoptrical propagation time and refractive index, thereby accurately locate; Because the velocity of propagation of light wave is very fast, so greatly improved the response time of system, has reduced the harm that Oil spills causes.Based on the related software of native system, can carry out Real-Time Monitoring to the whole piece pipeline, the typing of the data such as delivery temperature by managing interior oil product can be to the temperature signal that the collects judgement of comparing, and then sends warning, has reduced rate of false alarm.Whole system can effectively be monitored the leakage of conveyance conduit in real time.
One of the object of the invention provides a kind ofly to be had simple in structurely, and Location accuracy is high, and the response time is short, easy to operate, stable and reliable for performance, position judgment is accurate, long service life, the pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement of the characteristics such as real-time online detection.
The pipe leakage on-Line Monitor Device that the present invention is based on optical fiber temperature-measurement adopts following technological scheme:
A kind of pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement, be characterized in: on-Line Monitor Device comprises monitoring host computer and temperature sensing optical cable; Monitoring host computer is communicated with temperature sensing optical cable through communication cable or transmission of wireless signals mode; Monitoring host computer comprises lasing light emitter, signal receiver, Wavelength Devision Multiplexer, amplifier and microprocessor, the optical signal of lasing light emitter emission, through temperature sensing optical cable, signal receiver, Wavelength Devision Multiplexer, amplifier, pass to microprocessor and process, realize the on-line monitoring based on the pipe leakage of optical fiber temperature-measurement.
The pipe leakage on-Line Monitor Device that the present invention is based on optical fiber temperature-measurement can also adopt following technical measures:
Described pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement; be characterized in: temperature sensing optical cable is double-deck hank knotting armouring temperature sensing optical cable; double-deck hank knotting armouring temperature sensing optical cable structure is that inner core is temperature sensing optical fiber, and temperature sensing optical fiber is surrounded by protecting jacket, and the protecting jacket outside is double-deck hank knotting armouring.
Two of the object of the invention provides a kind of easy to operate, wide coverage, response in time, registration, rate of false alarm is low, can greatly reduce the risk of pipe leakage and the loss that economy, environment are caused, the pipe leakage on-line monitoring method based on optical fiber temperature-measurement of the characteristics such as energy real-time online detection.
The pipe leakage on-line monitoring method that the present invention is based on optical fiber temperature-measurement adopts following technological scheme:
A kind of pipe leakage on-line monitoring method based on optical fiber temperature-measurement is characterized in: monitoring host computer is communicated with temperature sensing optical cable through communication cable or transmission of wireless signals mode; Monitoring host computer comprises lasing light emitter, signal receiver, Wavelength Devision Multiplexer, amplifier and microprocessor; The temperature sensing optical cable induction pipe leaks temperature variation, to the laser generation reflected light induced signal of lasing light emitter; The signal receiver receiving optical signals through Wavelength Devision Multiplexer, amplifier, is passed to microprocessor and is processed, and microprocessor analysis shows the pipe leakage situation that temperature sensing optical cable is sensed, thereby realizes the on-line monitoring purpose based on the pipe leakage of optical fiber temperature-measurement.
The pipe leakage on-line monitoring method that the present invention is based on optical fiber temperature-measurement can also be taked following technological scheme:
Described pipe leakage on-line monitoring method based on optical fiber temperature-measurement is characterized in: keep the distance of optical cable and pipeline less than 300mm when temperature sensing optical cable is laid.
Described pipe leakage on-line monitoring method based on optical fiber temperature-measurement is characterized in: temperature sensing optical cable is the whole piece optical cable.
Described pipe leakage on-line monitoring method based on optical fiber temperature-measurement is characterized in: temperature sensing optical cable can't carry out the whole piece optical cable when laying, and first segmentation is laid, and then each intersegmentally connects by molten fibre, and carries out seal protection at joint area.
The advantage that the present invention has and good effect:
Pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement, owing to adopted the brand-new technological scheme of the present invention, compared with prior art, the present invention applies to Fiber Optic Pyrometer in the leakage monitoring of conveyance conduit, this technology is based on laser transmission meeting in optical fiber and produces reflection and scattering owing to the somewhere temperature changes, by to catoptrical reception, can record temperature variation and the real-time location at this place according to its temperature effect.Whether use this method to occur to leak to conveyance conduit carries out in real time, continuously, effectively monitoring, it has wide coverage (once-paving can cover the whole piece pipeline), response is fast (short from leaking into the successful time of monitoring, less than 10 seconds), the advantage such as registration (precision is ± 10 meters), rate of false alarm be low, greatly reduce the risk of pipe leakage and the loss that economy, environment are caused.
Description of drawings
Fig. 1 is system architecture schematic representation of the present invention;
Fig. 2 is the high temperature resistant armouring temperature sensing optical cable of double-deck twisting type structural representation;
Fig. 3 is monitoring software of the present invention interface schematic representation.
Among the figure, the double-deck hank knotting armouring of 1-, 2-protecting jacket, 3-temperature sensing optical fiber, 4-monitoring host computer, 5-communication cable, 6-ground, 7-armouring temperature sensing optical cable, 8-transfer line, 9-monitoring parameter display box, 10-real time temperature monitoring curve.
Embodiment
For further understanding technology contents of the present invention, Characteristic, hereby enumerate following instance, and cooperate accompanying drawing to be described in detail as follows:
With reference to accompanying drawing 1, Fig. 2 and Fig. 3.
Embodiment 1
Pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement comprises monitoring host computer 4, communication cable 5, armouring temperature sensing optical cable 7 and monitoring software; Described monitoring host computer 4 comprises lasing light emitter, optical unit, and fiber-optical socket, signal receiver, Wavelength Devision Multiplexer, amplifier, Coupler, processor is positioned in the master-control room; Described armouring temperature sensing optical cable 7 comprises double-deck hank knotting armouring 1, protecting jacket 2, and temperature sensing optical fiber 3 uses communication cable 5 to be connected integrant hardware monitoring system with monitoring host computer 4.
Based on the pipe leakage on-Line Monitor Device of optical fiber temperature-measurement, several parts of related hardware monitoring system form and functional description:
1. double-deck hank knotting armouring temperature sensing optical cable
Carry out temperature sensing, have good mechanical property, transmission performance and good environmental suitability have high tension, compressive strength, and high-intensity stranded assurance optical cable still keeps twisted state when being subject to outside torsion.Optical cable is hermetically sealed design, electrochemical corrosion resistant, and the oil resistance that blocks water can be resisted various mal-conditions, guarantees the signal transmission.
2. monitoring host computer
Comprise lasing light emitter, optical unit, fiber-optical socket, signal receiver, Wavelength Devision Multiplexer, amplifier, Coupler, processor.Be responsible for light source output, the reception of light reflected signal, identification, separation and processing, and the operation of monitoring software.
3. communication cable
Connect monitoring host computer and temperature sensing optical cable, carry out the signal transmission, as environment do not allow or optical fiber and main frame when long, can use wireless mode instead and transmit.
4. monitoring software
By the real-time display monitoring data of the mode of man-machine interaction, but the basic data of typing in early stage tested pipeline, such as delivery temperature, the parameters such as length, the preset alarm temperature range is carried out real time data according to the actual monitoring situation and is shown.
Embodiment 2
A kind of pipe leakage on-line monitoring method based on optical fiber temperature-measurement, the concrete steps of enforcement are as follows:
1) lays optical cable
When conveyance conduit is laid, lay synchronously temperature sensing optical cable, armouring temperature sensing optical cable 7 and transfer line 8 are bound together by the stainless steel cassette tape, distance should less than 30 centimetres, can guarantee the validity of thermometric like this between optical cable and the pipeline.In the process of deployment, if field condition does not allow to lay the whole piece optical cable, also can segmentation lay, then each intersegmentally connects by molten fibre, and carries out seal protection at joint area.
2) signal testing
After laying is finished, armouring temperature sensing optical cable 7 is carried out signal testing, confirm that the whole piece optical cable all can carry out optical signal transmission, the middle situation that does not meet accident and disconnect.
3) connect main frame
4) input parameter
In monitoring software, typing tested pipeline size, length, the parameters such as delivery temperature and ambient temperature, thus determine corresponding warning critical value.These parameters and real-time parameter all can show in monitoring parameter display box 9 in real time, can observe intuitively the temperature conditions of whole piece pipeline by real time temperature monitoring curve 10.
5) Real Time Monitoring
Begin pipeline is carried out Real Time Monitoring, realize purpose of the present invention.
Whether present embodiment can occur to leak to conveyance conduit is carried out in real time, continuously, effectively monitoring, it has wide coverage (once-paving can cover the whole piece pipeline), response is fast (short from leaking into the successful time of monitoring, less than 10 seconds), the advantage such as registration (precision is ± 10 meters), rate of false alarm be low, greatly reduce the risk of pipe leakage and the loss that economy, environment are caused.
Claims (6)
1. pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement, it is characterized in that: on-Line Monitor Device comprises monitoring host computer and temperature sensing optical cable; Monitoring host computer is communicated with temperature sensing optical cable through communication cable or transmission of wireless signals mode; Monitoring host computer comprises lasing light emitter, signal receiver, Wavelength Devision Multiplexer, amplifier and microprocessor, the optical signal of lasing light emitter emission, through temperature sensing optical cable, signal receiver, Wavelength Devision Multiplexer, amplifier, pass to microprocessor and process, realize the on-line monitoring based on the pipe leakage of optical fiber temperature-measurement.
2. according to the pipe leakage on-Line Monitor Device based on optical fiber temperature-measurement claimed in claim 1; it is characterized in that: temperature sensing optical cable is double-deck hank knotting armouring temperature sensing optical cable; the structure of double-deck hank knotting armouring temperature sensing optical cable is that inner core is temperature sensing optical fiber; temperature sensing optical fiber is surrounded by protecting jacket, and the protecting jacket outside is double-deck hank knotting armouring.
3. pipe leakage on-line monitoring method based on optical fiber temperature-measurement, it is characterized in that: monitoring host computer is communicated with temperature sensing optical cable through communication cable or transmission of wireless signals mode; Monitoring host computer comprises lasing light emitter, signal receiver, Wavelength Devision Multiplexer, amplifier and microprocessor; The temperature sensing optical cable induction pipe leaks temperature variation, to the laser generation reflected light induced signal of lasing light emitter; The signal receiver receiving optical signals through Wavelength Devision Multiplexer, amplifier, is passed to microprocessor and is processed, and microprocessor analysis shows the pipe leakage situation that temperature sensing optical cable is sensed, thereby realizes the on-line monitoring purpose based on the pipe leakage of optical fiber temperature-measurement.
4. according to the pipe leakage on-line monitoring method based on optical fiber temperature-measurement claimed in claim 3, it is characterized in that: keep the distance of optical cable and pipeline less than 300mm when temperature sensing optical cable is laid.
5. according to claim 3 or 4 described pipe leakage on-line monitoring methods based on optical fiber temperature-measurement, it is characterized in that: temperature sensing optical cable is the whole piece optical cable.
6. according to claim 3 or 4 described pipe leakage on-line monitoring methods based on optical fiber temperature-measurement; temperature sensing optical cable it is characterized in that: when can't carry out the laying of whole piece optical cable; elder generation's segmentation is laid, and then each intersegmentally connects by molten fibre, and carries out seal protection at joint area.
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| CN103630265A (en) * | 2013-12-10 | 2014-03-12 | 天津亿利科能源科技发展股份有限公司 | Online monitoring method for temperature of flexible pipeline based on distributed optical fibers |
| CN103644459A (en) * | 2013-12-10 | 2014-03-19 | 苏州苏净保护气氛有限公司 | Monitoring and alarming system and method for buried gas pipeline leakage |
| CN104100842A (en) * | 2014-07-14 | 2014-10-15 | 青岛厚科化学有限公司 | Pipeline monitoring device and system based on distributed fiber sensors and acoustic wave |
| CN104712909A (en) * | 2015-04-01 | 2015-06-17 | 无锡昌纳德检测科技有限公司 | Portable type heat pipeline detection device |
| CN104990682A (en) * | 2015-07-31 | 2015-10-21 | 威特龙消防安全集团股份公司 | Wind tunnel testing method based on temperature sensing fiber positioning detection |
| CN105067190A (en) * | 2015-07-31 | 2015-11-18 | 威特龙消防安全集团股份公司 | Coal dust transmission pipeline leakage early warning detection method |
| CN105135215A (en) * | 2015-06-26 | 2015-12-09 | 中国石油化工股份有限公司胜利油田分公司 | Leakage detection device for oil collecting pipeline with optical fiber method |
| CN105220758A (en) * | 2015-09-23 | 2016-01-06 | 苏州市玄天环保科技有限公司 | A kind of soil pipe |
| CN105221936A (en) * | 2015-10-26 | 2016-01-06 | 安徽师范大学 | The device of a kind of monitoring and location direct-burried heat distribution pipeline leakage point and controlling method thereof |
| CN105508881A (en) * | 2015-12-31 | 2016-04-20 | 天津市州易机电科技有限公司 | Leakage detection and alarming system of heat preservation pipe |
| CN106761809A (en) * | 2016-12-19 | 2017-05-31 | 中国电建集团中南勘测设计研究院有限公司 | It is a kind of to carry out defects detection, the zawn gas storage library structure of monitoring |
| CN106989281A (en) * | 2017-05-25 | 2017-07-28 | 中国计量大学 | A kind of fluid pipeline leakage detection method based on optical fiber Raman temperature sensor |
| CN107576420A (en) * | 2017-09-20 | 2018-01-12 | 郭泊远 | A kind of energy conduit leakage monitoring system |
| CN108194839A (en) * | 2017-12-25 | 2018-06-22 | 北京市热力工程设计有限责任公司 | A kind of leakage monitoring cable network based on heat distribution pipeline |
| CN108955938A (en) * | 2018-07-02 | 2018-12-07 | 青岛汇安谷科技发展有限公司 | One kind being used for room temperature feed-line distributed fiber temperature measuring device and temp measuring method |
| CN109186800A (en) * | 2018-08-02 | 2019-01-11 | 广东聚源管业实业有限公司 | Pipeline predicting abnormality method and device based on fiber raman scattering light |
| CN109827078A (en) * | 2017-11-23 | 2019-05-31 | 中国石油化工股份有限公司 | A kind of oil pipeline fault detection method based on distributed optical fiber temperature measurement |
| CN111256042A (en) * | 2020-01-19 | 2020-06-09 | 山东大城防腐保温安装工程有限公司 | Steel bushing steel steam insulating pipe capable of rapidly checking leakage points |
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| CN114018484A (en) * | 2021-10-27 | 2022-02-08 | 上海建工二建集团有限公司 | Device and method for monitoring leakage condition of ground wall enclosure in excavation process |
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| CN103644459A (en) * | 2013-12-10 | 2014-03-19 | 苏州苏净保护气氛有限公司 | Monitoring and alarming system and method for buried gas pipeline leakage |
| CN103630265A (en) * | 2013-12-10 | 2014-03-12 | 天津亿利科能源科技发展股份有限公司 | Online monitoring method for temperature of flexible pipeline based on distributed optical fibers |
| CN103644459B (en) * | 2013-12-10 | 2016-03-02 | 苏州苏净保护气氛有限公司 | Steel gas pipe underground leakage monitoring alarm system and method |
| CN104100842A (en) * | 2014-07-14 | 2014-10-15 | 青岛厚科化学有限公司 | Pipeline monitoring device and system based on distributed fiber sensors and acoustic wave |
| CN104712909A (en) * | 2015-04-01 | 2015-06-17 | 无锡昌纳德检测科技有限公司 | Portable type heat pipeline detection device |
| CN105135215A (en) * | 2015-06-26 | 2015-12-09 | 中国石油化工股份有限公司胜利油田分公司 | Leakage detection device for oil collecting pipeline with optical fiber method |
| CN104990682B (en) * | 2015-07-31 | 2017-06-16 | 威特龙消防安全集团股份公司 | A kind of wind tunnel test methods based on temperature sensing optical fiber coordinate detection |
| CN105067190A (en) * | 2015-07-31 | 2015-11-18 | 威特龙消防安全集团股份公司 | Coal dust transmission pipeline leakage early warning detection method |
| CN104990682A (en) * | 2015-07-31 | 2015-10-21 | 威特龙消防安全集团股份公司 | Wind tunnel testing method based on temperature sensing fiber positioning detection |
| CN105220758A (en) * | 2015-09-23 | 2016-01-06 | 苏州市玄天环保科技有限公司 | A kind of soil pipe |
| CN105221936B (en) * | 2015-10-26 | 2018-09-14 | 安徽师范大学 | A kind of device and its control method of monitoring and positioning directly buried heat distribution pipeline road leakage point |
| CN105221936A (en) * | 2015-10-26 | 2016-01-06 | 安徽师范大学 | The device of a kind of monitoring and location direct-burried heat distribution pipeline leakage point and controlling method thereof |
| CN105508881A (en) * | 2015-12-31 | 2016-04-20 | 天津市州易机电科技有限公司 | Leakage detection and alarming system of heat preservation pipe |
| CN106761809A (en) * | 2016-12-19 | 2017-05-31 | 中国电建集团中南勘测设计研究院有限公司 | It is a kind of to carry out defects detection, the zawn gas storage library structure of monitoring |
| CN106989281B (en) * | 2017-05-25 | 2019-03-19 | 中国计量大学 | A kind of fluid pipeline leakage detection method based on optical fiber Raman temperature sensor |
| CN106989281A (en) * | 2017-05-25 | 2017-07-28 | 中国计量大学 | A kind of fluid pipeline leakage detection method based on optical fiber Raman temperature sensor |
| CN107576420A (en) * | 2017-09-20 | 2018-01-12 | 郭泊远 | A kind of energy conduit leakage monitoring system |
| CN109827078A (en) * | 2017-11-23 | 2019-05-31 | 中国石油化工股份有限公司 | A kind of oil pipeline fault detection method based on distributed optical fiber temperature measurement |
| CN108194839A (en) * | 2017-12-25 | 2018-06-22 | 北京市热力工程设计有限责任公司 | A kind of leakage monitoring cable network based on heat distribution pipeline |
| CN108955938A (en) * | 2018-07-02 | 2018-12-07 | 青岛汇安谷科技发展有限公司 | One kind being used for room temperature feed-line distributed fiber temperature measuring device and temp measuring method |
| CN109186800A (en) * | 2018-08-02 | 2019-01-11 | 广东聚源管业实业有限公司 | Pipeline predicting abnormality method and device based on fiber raman scattering light |
| CN111256042A (en) * | 2020-01-19 | 2020-06-09 | 山东大城防腐保温安装工程有限公司 | Steel bushing steel steam insulating pipe capable of rapidly checking leakage points |
| CN113567051A (en) * | 2021-07-22 | 2021-10-29 | 中国核动力研究设计院 | On-line weld joint monitoring system and method based on optical fiber temperature measurement technology |
| CN113531403A (en) * | 2021-08-26 | 2021-10-22 | 三门核电有限公司 | Water pipe leakage detection method and device |
| CN114018484A (en) * | 2021-10-27 | 2022-02-08 | 上海建工二建集团有限公司 | Device and method for monitoring leakage condition of ground wall enclosure in excavation process |
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Application publication date: 20130130 |