CN106989281B - A liquid pipeline leak detection method based on optical fiber Raman temperature sensor - Google Patents
A liquid pipeline leak detection method based on optical fiber Raman temperature sensor Download PDFInfo
- Publication number
- CN106989281B CN106989281B CN201710379579.0A CN201710379579A CN106989281B CN 106989281 B CN106989281 B CN 106989281B CN 201710379579 A CN201710379579 A CN 201710379579A CN 106989281 B CN106989281 B CN 106989281B
- Authority
- CN
- China
- Prior art keywords
- detection
- pipeline
- optical fiber
- conversion zone
- temperature sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 title claims abstract description 19
- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 71
- 239000000835 fiber Substances 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical group O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
Landscapes
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
本发明公开了一种基于光纤拉曼温度传感器的液体管道泄漏检测方法，它包括：第一步、将检测光纤紧贴检测管道底部；第二步、在检测光纤和检测管道的外部设置转换层，该转换层的底部为弧形反应层，该反应层的内侧不漏检测液体，外侧可以渗透检测液体；第三步、在该转换层的外部设置隔离层；第四步、通过光纤温度传感器监测检测光纤周围的温度场变化，当检测管道有泄漏时，泄漏液体与反应层发生反应，释放出热量，根据温度变化得到泄漏信息；这对于光纤拉曼温度传感器的发展和应用具有重要意义。
The invention discloses a liquid pipeline leak detection method based on an optical fiber Raman temperature sensor, which comprises the following steps: in the first step, the detection optical fiber is closely attached to the bottom of the detection pipeline; in the second step, a conversion layer is arranged outside the detection optical fiber and the detection pipeline. , the bottom of the conversion layer is an arc-shaped reaction layer, the inner side of the reaction layer does not leak the detection liquid, and the outer side can penetrate the detection liquid; the third step is to set an isolation layer outside the conversion layer; the fourth step, through the optical fiber temperature sensor Monitor the temperature field changes around the detection fiber. When there is a leak in the detection pipeline, the leaking liquid reacts with the reaction layer to release heat, and the leakage information can be obtained according to the temperature change; this is of great significance for the development and application of fiber-optic Raman temperature sensors.
Description
Technical field
The invention belongs to detection fields more particularly to a kind of fluid pipeline based on optical fiber Raman temperature sensor to leak inspection
Survey method.
Background technique
Currently, the development of fiber Raman temperature sensor technology also can be applied to fire with the development of optical fiber sensing technology
The technical fields such as calamity detection, the detection technique are more obvious for temperature change detection, but not for the leak detection of water pipe
It can directly apply, especially the pipeline junction of water pipe and the easily damaged injury of water pipe, one of the main reasons for this is that since water pipe is let out
Temperature change is not significant enough when leakage, and is easy to be influenced by factors such as extraneous rainwater, so if can have a kind of device (or side
Method) signal of pipe leakage can be converted (or temperature signal amplification), thus to be passed by fiber Raman temperature
Sensor detects that pipe leakage creates condition, this is of great significance for the leak detection and on-line monitoring of water pipe, also must
The application that fibre optic temperature sensor can so be promoted, especially for the detection and monitoring of the easy leakage region of the water pipes such as water pipe junction
It is of great significance.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of liquid based on optical fiber Raman temperature sensor
It is unconspicuous to solve the problems, such as that distributed optical fiber temperature sensor collects signal for body pipeline leakage detection method.
Purpose to realize the present invention, is achieved using following technical scheme: one kind being based on fiber Raman temperature sensing
The fluid pipeline leakage detection method of device, comprising the following steps:
The first step will test optical fiber abutting detection duct bottom；
Conversion layer is arranged in detection fiber and the external of detection pipeline in second step, and the bottom of the conversion layer is arc reaction
Layer, the inside not leak detection liquid of the conversion zone, outside can be with Liquid penetrant testing liquid；
Separation layer is arranged in the external of the conversion layer in third step；
4th step monitors the change of temperature field around detection fiber by fibre optic temperature sensor, when detection pipeline is let out
When leakage, leakage liquid reacts with conversion zone, releases amount of heat and is brought rapidly up so as to cause ambient enviroment, according to temperature
Variation obtains leakage information.
Further, distance of the bottom end of the separation layer apart from least 1 centimetre of conversion zone bottom end.
Further, the conversion layer wraps up the detection pipeline and detection fiber.
Further, conversion zone is arranged in subaerial side of conversion layer, while to be close to detection on the inside of the conversion zone
The inside (i.e. close to the side of pipeline) of optical fiber, the conversion zone is made of watertight plastic material, the outside of the conversion zone
It is made of the fibrous material of infiltration.
Further, the separation layer uses antiseep, and resistant material is made, and the bottom of the separation layer is sink
Shape.
The beneficial effects of the present invention are:
1, conversion layer is tightly arranged outside detection pipeline due to the present invention, the bottom of the conversion layer is provided with conversion zone, should
Conversion zone is made using special media, the special media encounter detection pipeline internal liquid when can distribute amount of heat to
Cause ambient enviroment to be brought rapidly up, will lead to the conversion layer when detecting the liquid leakage in pipeline in this way and discharge big calorimetric
Amount causes the temperature field around detection fiber that significant changes occur, since the variation meeting modulation optical fiber in temperature field is in Raman scattering
Intensity, liquid leakage signal is converted to apparent temperature change signal, this just for detection provide convenience.
2, conversion layer of the present invention subaerial side in setting is provided with conversion zone, adopts on the inside of the conversion zone
It is made of water-tight material, the outside of the conversion zone is made of seepage material, and the outside of the conversion zone and above-mentioned separation layer
Bottom end set at least 1 centimetre of distance, and the inside for being close to above-mentioned conversion zone is arranged in the detection fiber；
Since the conversion zone being arranged on conversion layer is located in side near the ground, so no matter water pipe which side leak, by
Duct bottom can be all flow in gravity principle further to react with conversion zone；It need to only arrange that a detection fiber can be quasi- in this way
Really detect leakage problem；
Since the inside of the conversion zone is water-tight, even if waterpipe wall leads to have droplet to be attached to its surface due to environment reason
The case where temperature of conversion zone will not be caused to change, reduce erroneous judgement generation；
Since the outside of the conversion zone is set at a distance from least 1 centimetre with the bottom end of above-mentioned separation layer, only work as in this way
Cause water surface elevation that the medium of conversion zone can just be made to meet water when being more than 1 centimetre of the separation layer bottom end when water pipe leaks anti-
Temperature change should occur, improve the accuracy of detection.
Detailed description of the invention
Fig. 1 is that the present invention lays schematic diagram.
In figure, 1, conversion layer；2, separation layer；3, detection fiber；4, conversion zone；P, pipeline is detected.
Specific embodiment
Below according to attached drawing, the present invention will be described in detail.
Embodiment one:
As shown in Figure 1, liquid is that tap water elaborates to the present invention in default detection pipeline P, the present invention includes inspection
Test tube road P, the conversion layer 1 being tightly arranged on the outside of detection pipeline P, and the separation layer 2 outside the conversion layer 1 is set；
The conversion layer 1 is conversion zone 4 in subaerial side, and the inside of the conversion zone 4 is (i.e. close to the one of pipeline
Side) it is made of watertight plastic material, the outside of the conversion zone 4 is made of the fibrous material of infiltration；
Using the limestone material medium for being 15% containing equally distributed calcium oxide content in the conversion zone 4
It is made；
Distance of the bottom end of the separation layer 2 apart from above-mentioned at least 1 centimetre of 4 bottom end of conversion zone；
The separation layer 2 uses the polyurethane material of waterproof, anti-corrosion, heat preservation to be made and water is in the bottom of the separation layer 3
Channel-shaped, influence of the separation layer 2 to obstruct the external environments such as external rainwater；
When detection,
The first step will test the abutting detection of optical fiber 3 bottom pipeline P；
Conversion layer 1 is arranged in detection fiber 3 and the external of detection pipeline P in second step, and the bottom of the conversion layer 1 is arc
Conversion zone 4, the inside not leak detection liquid of the conversion zone 4, outside can be with Liquid penetrant testing liquid；
Separation layer 2 is arranged in the external of the conversion layer 1 in third step；
4th step monitors the change of temperature field around detection fiber P by fibre optic temperature sensor, when detection pipeline P has
When leakage, leakage liquid reacts with conversion zone 4, releases heat, obtains leakage information according to temperature change.
The principle is as follows:
When detecting pipeline P does not have water leakage, then detecting the temperature field outside pipeline P will not change, then detects institute
Obtained temperature does not have significant change, even if summer water wall has droplet, does not leak since the inside of above-mentioned conversion zone 4 uses
Water material is made, and droplet can't be made to react with conversion zone 4；
When detecting pipeline P has water leakage, since the bottom of separation layer 2 is sink shape, the water leakage in pipeline P is detected
Afterwards, when the depth of the water in 2 bottom of separation layer makes the water surface touch the outside of conversion zone 4, the calcium oxide of water and conversion zone 4
It reacts, releases heat, modulated the temperature field around detection fiber 3, so that optical fiber Raman temperature sensor is detected
Temperature vary widely, more accurate leakage information can be obtained by post-processing.
Corresponding reaction medium can be selected in conversion zone 4 according to the actual situation for other liquid, such as: it is defeated
Liquor charging body is nitric acid, and medium selects copper powder.
The present invention is that fibre optic temperature sensor is created condition applied to the leakage of water pipe, and greatly reduces test leakage mistake
The probability of survey is of great significance for the development of fiber Raman sensor.
Claims (3)
1. a kind of fluid pipeline leakage detection method based on optical fiber Raman temperature sensor, which is characterized in that this method includes
Following steps:
The first step will test optical fiber (3) abutting detection bottom pipeline (P)；
Conversion layer (1) is arranged in detection fiber (3) and the external of detection pipeline (P) in second step, and the bottom of the conversion layer (1) is
Arc conversion zone (4), the inside not leak detection liquid of the conversion zone (4), outside can be with Liquid penetrant testing liquid；
Separation layer (2) are arranged in the external of the conversion layer (1) in third step；
4th step monitors the change of temperature field around detection fiber (P) by fibre optic temperature sensor, when detection pipeline (P) has
When leakage, leakage liquid reacts with conversion zone (4), releases heat, obtains leakage information according to temperature change；
Wherein, the conversion zone (4) is arranged in subaerial side of the conversion layer, while to be close on the inside of the conversion zone
Detection fiber, the inside of the conversion zone are made close to the side of pipeline of watertight plastic material, the conversion zone
Outside using infiltration fibrous material be made.
2. a kind of fluid pipeline leakage detection method based on optical fiber Raman temperature sensor according to claim 1,
It is characterized in that, the distance of the bottom end of the separation layer (2) apart from least 1 centimetre of conversion zone (4) bottom end.
3. a kind of fluid pipeline leakage detection method based on optical fiber Raman temperature sensor according to claim 1,
It is characterized in that, the conversion layer (1) wraps up the detection pipeline (P) and detection fiber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710379579.0A CN106989281B (en) | 2017-05-25 | 2017-05-25 | A liquid pipeline leak detection method based on optical fiber Raman temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710379579.0A CN106989281B (en) | 2017-05-25 | 2017-05-25 | A liquid pipeline leak detection method based on optical fiber Raman temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106989281A CN106989281A (en) | 2017-07-28 |
| CN106989281B true CN106989281B (en) | 2019-03-19 |
Family
ID=59419747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710379579.0A Active CN106989281B (en) | 2017-05-25 | 2017-05-25 | A liquid pipeline leak detection method based on optical fiber Raman temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106989281B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764454B (en) * | 2017-01-25 | 2020-06-23 | 山西科达自控股份有限公司 | Distributed optical fiber ribbon and distributed optical fiber sensing pipe network monitoring device |
| US10760742B2 (en) * | 2018-03-23 | 2020-09-01 | Rosemount Inc. | Non-intrusive pipe wall diagnostics |
| CN109140250B (en) * | 2018-11-01 | 2020-05-08 | 重庆大学 | Gas-liquid transport pipeline leakage point on-line monitoring system based on distributed optical fiber sensing |
| CN110243547A (en) * | 2019-03-21 | 2019-09-17 | 中国矿业大学 | A wireless monitoring device and monitoring method for mine grouting pipeline joint leakage |
| CN110529744A (en) * | 2019-07-30 | 2019-12-03 | 江阴爱科森博顿聚合体有限公司 | A kind of dedicated optical cable nylon sheath wire material of pipe leakage detection |
| CN111463510B (en) * | 2020-04-14 | 2021-05-11 | 傲普(上海)新能源有限公司 | Soft pack battery module and manufacturing method thereof |
| CN111693432A (en) * | 2020-06-04 | 2020-09-22 | 山东大学 | Automatic monitoring system and method for water leakage on surface of structure |
| CN113669636B (en) * | 2021-07-09 | 2023-04-18 | 安徽复盛信息科技有限公司 | Pipeline leakage monitoring method based on fiber bragg grating temperature measurement technology |
| CN113551840A (en) * | 2021-07-22 | 2021-10-26 | 中国核动力研究设计院 | Valve internal leakage monitoring system and method based on optical fiber temperature measurement technology |
| CN114001865A (en) * | 2021-11-02 | 2022-02-01 | 无锡亚冠微电子有限公司 | Tunnel water seepage and water burst monitoring method and system based on distributed optical fiber monitoring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900955A (en) * | 2012-11-09 | 2013-01-30 | 天津亿利科能源科技发展股份有限公司 | Pipeline leakage on-line monitoring device and method based on f fiber temperature detection |
| CN105021309A (en) * | 2015-07-14 | 2015-11-04 | 南京航空航天大学 | Spliced heatable high-precision distributed optical fiber temperature sensor |
| CN205618902U (en) * | 2016-04-26 | 2016-10-05 | 唐山丰南君业节能保温材料有限公司 | Prefabricated direct -burried insulating tube with energy -conserving monitor function |
| CN106287236A (en) * | 2015-06-10 | 2017-01-04 | 中国计量学院 | Distributed monitoring leak from oil gas pipe system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281848A (en) * | 1993-01-28 | 1994-10-07 | Showa Electric Wire & Cable Co Ltd | Loose tube type optical fiber cable |
-
2017
- 2017-05-25 CN CN201710379579.0A patent/CN106989281B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900955A (en) * | 2012-11-09 | 2013-01-30 | 天津亿利科能源科技发展股份有限公司 | Pipeline leakage on-line monitoring device and method based on f fiber temperature detection |
| CN106287236A (en) * | 2015-06-10 | 2017-01-04 | 中国计量学院 | Distributed monitoring leak from oil gas pipe system |
| CN105021309A (en) * | 2015-07-14 | 2015-11-04 | 南京航空航天大学 | Spliced heatable high-precision distributed optical fiber temperature sensor |
| CN205618902U (en) * | 2016-04-26 | 2016-10-05 | 唐山丰南君业节能保温材料有限公司 | Prefabricated direct -burried insulating tube with energy -conserving monitor function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106989281A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106989281B (en) | A liquid pipeline leak detection method based on optical fiber Raman temperature sensor | |
| CN105987778B (en) | A kind of in-situ measuring method of duct pieces of shield tunnel seam stress | |
| US20130213130A1 (en) | Fluid measurement sensor attachment structure | |
| CN107727271B (en) | Leak detection device for underground diaphragm wall based on distributed optical fiber temperature measurement | |
| CN203686596U (en) | Distributed fiber sensor petroleum pipeline leakage detection device based on smart layer | |
| CN201184499Y (en) | Oil and gas pipeline leakage monitoring device | |
| CN107270133A (en) | A kind of pipeline fluid leakage positioner and its application method | |
| CN206920039U (en) | Deployment device that facilitates the detection of pipelines by optical fiber Raman temperature sensors | |
| CN204756457U (en) | Ocean hose monitoring devices on throne | |
| CN214535725U (en) | Pipeline for conveying flammable and combustible fluid medium combined with DTS system | |
| CN106017775A (en) | Pipe with testing function | |
| CN110470346A (en) | Concrete temperature-humidity monitoring structure based on carbon fiber Screw arbor with nut at both-ends | |
| CN102012297A (en) | Pressure measuring device and method for high temperature medium | |
| CN119197912A (en) | Gas pipeline leakage detection device and method for gas engine | |
| CN113833989B (en) | Device and method for detecting drainage pipeline misconnection or leakage | |
| CN107167263A (en) | Experimental platform for water pipe leak detection based on optical fiber Raman temperature sensor | |
| US20090223283A1 (en) | System and process for detecting leakage in umbilicals | |
| CN206725156U (en) | A kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus | |
| CN202432247U (en) | Buried gas pipeline tightness test system | |
| CN212131283U (en) | Gas collection device and detector | |
| CN217155746U (en) | Laboratory temperature optical fiber measurement water supply pipeline leakage experiment system | |
| CN205001869U (en) | Underground heat supply pipeline expansion joint equipment | |
| CN112524496A (en) | Experimental device for improve system alarm precision is revealed to optic fibre temperature detection water pipe | |
| TWI815020B (en) | Method of sensing leaking gas | |
| CN109630906A (en) | A kind of detachable pipeline leakage testing device and its detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170728 Assignee: Xinchang China Metrology University Enterprise Innovation Research Institute Co.,Ltd. Assignor: China Jiliang University Contract record no.: X2021330000071 Denomination of invention: A liquid pipeline leakage detection method based on optical fiber Raman temperature sensor Granted publication date: 20190319 License type: Common License Record date: 20210816 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Xinchang China Metrology University Enterprise Innovation Research Institute Co.,Ltd. Assignor: China Jiliang University Contract record no.: X2021330000071 Date of cancellation: 20211231 |