CN107559600A - The online leak detection system of heat distribution pipeline optical fiber - Google Patents
The online leak detection system of heat distribution pipeline optical fiber Download PDFInfo
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- CN107559600A CN107559600A CN201710895069.9A CN201710895069A CN107559600A CN 107559600 A CN107559600 A CN 107559600A CN 201710895069 A CN201710895069 A CN 201710895069A CN 107559600 A CN107559600 A CN 107559600A
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Abstract
The present invention relates to a kind of online leak detection system of heat distribution pipeline optical fiber, including optical fiber, it is characterized in that：The optical fiber is wrapped in pipeline outer surface by suppression covering layer；The optical fiber is connected with light-pulse generator and Signal acquiring and processing unit, and light-pulse generator is used to send laser pulse, and Signal acquiring and processing unit along fiber optic temperature field to measuring；The Signal acquiring and processing unit is connected with positioning unit, and positioning unit according to the continuous temperature curve along fiber lengths position leak position；The positioning unit connects with alarm unit, and positioning unit will leak out positional information and transmit to alarm unit, and alarm unit carries out Realtime Alerts and display leak position.Registration of the present invention, measurement accuracy is high, and temperature measurement accuracy is not influenceed by optical cable stress deformation.
Description
Technical field
The present invention relates to a kind of online leak detection system of heat distribution pipeline optical fiber, belong to pipeline leak detection technology field.
Background technology
In the 1950s, some external heat supply process developed countries, such as Sweden, Denmark, Finland, Germany,
Traditional in-duct installation mode is replaced using directly buried installation mode, they, which possess, designs from Direct-Buried Heating Pipeline, manufactures, applying
A series of technical standard of complete matures such as work is checked and accepted, monitoring, operation and measure.Directly buried installation mode, which has, saves the energy, makes
Valency is low, the advantages that taking up an area less, be easy for construction, is also developed rapidly in China in recent years.In order to ensure that heat supply network is securely and reliably transported
OK, grasp the running situation of heat supply network, it is necessary to which monitoring system is set in heat supply network at any time.For direct-burried heat supply network, some countries are
Through promoting the use of heat supply network leakage monitoring system.The leakage of heat supply pipeline is easily caused substantial amounts of water and hot loss of energy, reduces heat supply
The transfer efficiency of system.At the same time, there is potential safety hazard for heat distribution pipeline：Because gas leakage, leak occur for pipeline aging, or
Because ponding or large amount of sewage gather around heat distribution pipeline after rain, constantly gasification forms a large amount of steam aggregations and is difficult to evacuate, domestic
It is outer that different degrees of heat distribution pipeline explosive incident occurred.The New York heat distribution pipeline blast in July 20 in 2007, causes more people
Injures and deaths and property loss, traffic paralysis, while resident are mistaken for the attack of terrorism and cause very big psychological impact；The country also occurs
A lot of heat distribution pipeline explosive incidents are crossed, very big threat is caused to life security of traffic, communal facility or passerby etc..
Heat distribution pipeline can be acted on by high temperature, abrasion, physics, chemistry in use, in addition periphery underground engineering
Construction and the disturbance of traffic above-ground dynamic load, the defects of heat distribution pipeline can gradually be cracked, deformed, joint failure, Jin Eryan
It is turned into the accidents such as fracture, leakage.In addition, welding quality is high between pipeline section, internal pipe pressure exceedes its tolerance range, protects
The water inlet of warm layer causes pipe corrosion the safe operation for also seriously affecting heat distribution pipeline such as to destroy.Because heating medium temperature is higher
Often so that difficulty of speedily carrying out rescue work is big, and harm of the hot water to other communal facilitys of underground is also very big, and loss is difficult to estimate.Due to lacking
Weary reliable and stable heat distribution pipeline state inspection so that existing management mode lacks foresight, many accidents be all
Just it is found after pipeline damage.Therefore, accomplish to be preventive from possible trouble, the status information of heat distribution pipeline is grasped in real time, for heat
The safe operation of hydraulic piping is of crucial importance.
The distributed optical fiber temperature measurement technology of 21 century newly-developed, can continuously, space temperature of the accurate sense along sensor fibre
Spend field distribution, and used sensor fibre have small volume, in light weight, simple in construction, easy to use, high pressure resistant high temperature and
The advantages that electromagnetism interference, a kind of brand-new technological means is provided for the leak detection of heat distribution pipeline temperature measurement on-line.
Temperature-measuring system of distributed fibers not only has the advantages of ordinary optic fibre sensor, also has to each point temperature along optical fiber
The distributed sensing ability of degree, optical fiber are both the conductor for transmitting information, are the sensor of distributed measurement again.It can continuously be surveyed
The temperature at where along optical fiber is measured, maximum measurement distance is more than 20 kilometers, each continuous temperature-sensitive segmentation and spatial positioning accuracy
Reach 0.4 meter of high-resolution, especially suitable for needing a wide range of, continous way temperature survey application scenario.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of heat distribution pipeline optical fiber is hunted leak online is
System, registration, measurement accuracy is high, and temperature measurement accuracy is not influenceed by optical cable stress deformation.
According to technical scheme provided by the invention, the online leak detection system of heat distribution pipeline optical fiber, including optical fiber, its feature
It is：The optical fiber is wrapped in pipeline outer surface by suppression covering layer；The optical fiber and light-pulse generator and Signal acquiring and processing unit
Connection, light-pulse generator are used to send laser pulse, and Signal acquiring and processing unit along fiber optic temperature field to measuring；The letter
Number collection is connected with processing unit with positioning unit, and positioning unit is carried out to leakage according to the continuous temperature curve along fiber lengths
Position is positioned；The positioning unit connects with alarm unit, and positioning unit will leak out positional information and transmit to alarm unit,
Alarm unit carries out Realtime Alerts and display leak position.
Further, the optical fiber uses 1 optical fiber.
Further, the optical fiber uses circumferential directions of the multifiber along pipeline.
The online leak detection system of heat distribution pipeline optical fiber of the present invention, registration, measurement accuracy are high, temperature measurement accuracy not light
Cable stress deformation influences.
Brief description of the drawings
Fig. 1 is the schematic diagram of the online leak detection system of heat distribution pipeline optical fiber of the present invention.
Fig. 2 is optical fiber scheme of installation.
Description of reference numerals：1- optical fiber, 2- suppress covering layer, 3- pipelines, 4- light-pulse generators, 5- Signal acquiring and processing lists
Member, 6- positioning units, 7- alarm units.
Embodiment
With reference to specific accompanying drawing, the invention will be further described.
As shown in Figure 1 and Figure 2, the online leak detection system of heat distribution pipeline optical fiber of the present invention includes optical fiber 1, and optical fiber 1 is by suppressing
Covering layer 2 is wrapped in the outer surface of pipeline 3,1 optical fiber 1 can be used to use circumferencial direction cloth of the multifiber 1 along pipeline 3
Put；The optical fiber 1 is connected with light-pulse generator 4 and Signal acquiring and processing unit 5, and light-pulse generator 4 is used to send laser pulse, swashs
Light pulse and the interaction of molecules of optical fiber 1, are scattered, and scattering has a variety of, and wherein Raman scattering is due to the heat of optical fiber molecule
Vibration, produce a stokes light longer than optical source wavelength（Stokes）With an anti-Stokes light shorter than optical source wavelength
（Anti-Stokes）, the intensity of anti-Stokes optical signal is relevant with temperature, and Stokes optical signal is temperature independent.From light
In waveguide in the anti-Stokes optical signal of any point and the ratio of Stokes light signal strength, the temperature of the point can be obtained
Degree.Utilize optical time domain reflection technology（OTDR）Transmission speed of the technology by light wave in optical fiber and the time backwards to optical echo are to this
A little focuses are positioned.Signal acquiring and processing unit 5 can be realized to the distribution along the temperature field of optical fiber 1 using this principle
Measurement.The Signal acquiring and processing unit 5 is connected with positioning unit 6, and positioning unit 6 is according to the continuous temperature along fiber lengths
Curve leak position is positioned；The positioning unit 6 and alarm unit 7 connect, and positioning unit 6 will leak out position letter
Breath is transmitted to alarm unit 7, is realized and is alarmed and show in real time, exactly leak position.
The online leak detection system of heat distribution pipeline optical fiber of the present invention, in a distributed manner optical fiber sensing system for core it is automatic "
Observing and controlling " system, it is to have used the new and high technologies such as contemporary optics, modern sensor, automatic measurement and control and computer and phase
The comprehensive online auto monitoring system that the dedicated analysis software and communication network of pass are formed, is to long range thermal pipe
The Digitalized management platform and leakage monitoring automatic alarm system that line safe operation state is monitored real-time.Due to distribution
The temperature-sensing element and all optical fiber of signal transmssion line of formula optical fiber DTS temp measuring systems, so scene does not power, not by electromagnetic interference
And broken by lightning, intrinsic safe explosion-proof, dependable performance, service life was more than more than 50 years.
Compared with traditional sensors, there are many natural advantages, mainly include：
（1）Continuously distributed formula measurement：
Distributed fiberoptic sensor is real distributed measurement, can continuously obtain the survey along tens kilometers of detecting optical cable
Information is measured, wrong report and rate of failing to report substantially reduce, while realize monitoring in real time.
（2）Electromagnetism interference, realize live non-electric detection：
Optical fiber is that quartz material forms in itself, complete electric insulation；The signal of fibre optical sensor is using optical signal as load simultaneously
Body, intrinsic safety, do not disturbed by any external electromagnetic environment.It can be marched into the arena, thus be eliminated containing flammable mixed with not charged
The danger of electric spark is produced caused by closing the region possibility of gas, live non-electric detection, essential safety can be achieved.
（3）Intrinsic lightning protection：
Thunder and lightning often destroys a large amount of electrometric sensors.Fibre optical sensor can resist high voltage and height due to complete electric insulation
The impact of electric current.
（4）Far measuring distance, suitable for remote monitoring：
Two outstanding advantages of optical fiber are exactly transmitted data amount greatly and loss is small, in the case of without relaying, it is possible to achieve several
Ten kilometers of long-range monitoring.
（5）High sensitivity, measurement accuracy are high：
The sensitivity of most of fibre optical sensors and measurement accuracy are better than in general sensor, actual mature production in theory
Product also demonstrate this point.
（6）Long lifespan, cost are low, simple system：
The material of optical fiber is typically all quartz glass, heatproof, water-fast, corrosion-resistant, and normal working life was more than 50 years.Once build
After the completion of can realize non-maintaining automatic operating substantially, can greatly reduce the average annual operation maintenance cost of whole Heat Supply Engineering,
Realize the conditioning repair and maintenance of heat distribution pipeline.
Claims (3)
1. a kind of online leak detection system of heat distribution pipeline optical fiber, including optical fiber（1）, it is characterized in that：The optical fiber（1）By suppression covering layer
（2）It is wrapped in pipeline（3）Outer surface；The optical fiber（1）With light-pulse generator（4）With Signal acquiring and processing unit（5）Connection, arteries and veins
Wash source off（4）For sending laser pulse, Signal acquiring and processing unit（5）To along optical fiber（1）Temperature field measures；It is described
Signal acquiring and processing unit（5）With positioning unit（6）Connection, positioning unit（6）It is bent according to the continuous temperature along fiber lengths
Line leak position is positioned；The positioning unit（6）And alarm unit（7）Connection, positioning unit（6）It will leak out position
Information transfer is put to alarm unit（7）, alarm unit（7）Carry out Realtime Alerts and display leak position.
2. the online leak detection system of heat distribution pipeline optical fiber as claimed in claim 1, it is characterized in that：The optical fiber（1）Using 1 light
It is fine.
3. the online leak detection system of heat distribution pipeline optical fiber as claimed in claim 1, it is characterized in that：The optical fiber（1）Using more
Optical fiber is along pipeline（3）Circumferential directions.
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| CN201710895069.9A CN107559600A (en) | 2017-09-28 | 2017-09-28 | The online leak detection system of heat distribution pipeline optical fiber |
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| CN201710895069.9A CN107559600A (en) | 2017-09-28 | 2017-09-28 | The online leak detection system of heat distribution pipeline optical fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537160A (en) * | 2020-05-09 | 2020-08-14 | 深圳市行健自动化股份有限公司 | High-energy pipeline leakage monitoring method based on distributed optical fiber |
| CN113686513B (en) * | 2021-07-12 | 2024-02-13 | 厦门科灿信息技术有限公司 | Liquid leakage positioning method and device and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598516A (en) * | 2004-07-19 | 2005-03-23 | 天津大学 | Interference distributed fibre-optical pipe leakage real-time monitoring method and device |
| KR100803377B1 (en) * | 2007-03-12 | 2008-02-13 | (주) 소암컨설턴트 | Water pipe leak and breakdown inspection system use of optical fiber sensor |
| CN204678066U (en) * | 2015-04-17 | 2015-09-30 | 北京交通大学长三角研究院 | Optical fiber distributed type heat distribution pipe network monitoring system |
| 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 |
| CN105805556A (en) * | 2015-09-30 | 2016-07-27 | 李儒峰 | Distributed optical fiber leakage monitoring system |
| CN206488060U (en) * | 2017-01-17 | 2017-09-12 | 喀什华达建设工程有限责任公司 | A kind of underground pipe gallery natural gas line leakage on-line monitoring prior-warning device |
| CN207421796U (en) * | 2017-09-28 | 2018-05-29 | 江苏明江机械制造有限公司 | The online leak detection system of heat distribution pipeline optical fiber |
-
2017
- 2017-09-28 CN CN201710895069.9A patent/CN107559600A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598516A (en) * | 2004-07-19 | 2005-03-23 | 天津大学 | Interference distributed fibre-optical pipe leakage real-time monitoring method and device |
| KR100803377B1 (en) * | 2007-03-12 | 2008-02-13 | (주) 소암컨설턴트 | Water pipe leak and breakdown inspection system use of optical fiber sensor |
| CN204678066U (en) * | 2015-04-17 | 2015-09-30 | 北京交通大学长三角研究院 | Optical fiber distributed type heat distribution pipe network monitoring system |
| CN105805556A (en) * | 2015-09-30 | 2016-07-27 | 李儒峰 | Distributed optical fiber leakage monitoring system |
| 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 |
| CN206488060U (en) * | 2017-01-17 | 2017-09-12 | 喀什华达建设工程有限责任公司 | A kind of underground pipe gallery natural gas line leakage on-line monitoring prior-warning device |
| CN207421796U (en) * | 2017-09-28 | 2018-05-29 | 江苏明江机械制造有限公司 | The online leak detection system of heat distribution pipeline optical fiber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537160A (en) * | 2020-05-09 | 2020-08-14 | 深圳市行健自动化股份有限公司 | High-energy pipeline leakage monitoring method based on distributed optical fiber |
| CN113686513B (en) * | 2021-07-12 | 2024-02-13 | 厦门科灿信息技术有限公司 | Liquid leakage positioning method and device and electronic equipment |
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