CN2567548Y - Fibre-optical grating sensor for testing gas-oil pipe - Google Patents
Fibre-optical grating sensor for testing gas-oil pipe Download PDFInfo
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- CN2567548Y CN2567548Y CN 02246122 CN02246122U CN2567548Y CN 2567548 Y CN2567548 Y CN 2567548Y CN 02246122 CN02246122 CN 02246122 CN 02246122 U CN02246122 U CN 02246122U CN 2567548 Y CN2567548 Y CN 2567548Y
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- fiber grating
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Abstract
The utility model relates to an optical fiber grating sensor for testing an oil-gas pipe. The utility model comprises a grating optical fiber 1, adhesive 2, an encapsulated casing tube 3, an inlet slot 4, a stress measuring optical fiber grating 5, a flow pressure measuring optical fiber grating 6 and a piston 7, wherein, the optical fiber 1, the stress measuring optical fiber grating 5 and the flow pressure measuring optical fiber grating 6 are arranged in the encapsulated casing tube 3, the stress measuring optical fiber grating 5 and the flow pressure measuring optical fiber grating 6 are on the same optical fiber 1, and the optical fiber 1 is connected with the encapsulated casing tube 3 via the adhesive 2. The encapsulated casing tube 3 is provided with the inlet slot 4, the end part of the flow pressure measuring optical fiber grating 6 is provided with the piston 7 which is fixedly connected by an optical fiber connector, and the sensor has a stress response sensitivity between 0.05 nm / mu epsi and 0.15 nm / mu epsi and a pressure response sensitivity between 0.10 nm / Mpa and 0.20 nm / Mpa. The sensor is buried in the inner wall of a long oil-gas delivering pipe and matched with an optical fiber network signal transmission system to realize the multipoint distribution, the real-time display and the permanent dynamic detection of the parameters of the stress, the strain, the flow rate, the flow speed, the flow rate, the corrosion, the crack, the oil-gas leakage, etc. of the pipe.
Description
Relate to the field
The utility model is that a kind of burying with the fiber grating intellectualized sensor overlays on long oil and gas pipeline inwall carries out real-time online, permanent detection of dynamic to parameters such as pipe stress, strain, flow velocity, flow, stream pressure, burn into crack, oil and gas leakages sensor, specifically, be a kind of fiber-optic grating sensor that oil and gas pipes detects that is used for.
Background technology
At present, sensor in long oil/gas pipe line detects be basically strain type stress sensing, piezoelectric type pressure difference sensing, magnetic leakage detection sensing, ultrasonic locating sensing ... although the development that these sensors have experienced decades and perfect, but have generally that detection resolution is low, signal transmission and demodulated complex, instrument heaviness, sensing range is narrow and operation with show deficiencies such as inconvenience, particularly be subject to high temperature, high pressure, long influence apart from complex environment factors such as, electromagnetic field and chemical corrosions.Though reported the application of optical fiber sensing technology in oil-gas pipeline detects on some magazines abroad in recent years, be the conventional fiber method for sensing basically, as heat radiation type, fluorescence decay formula, light blocking type etc.These methods generally all are the tests of single-point, single parameter, also be difficult in to carry out real-time online under the current intelligence and forever detect, from principle and technical also can't be implemented in an optical fiber carry out multiple spot distribute, in real time in existing, permanent long distance detecting.
Fiber grating can bury as the sensor of intelligent structure and overlay on testee and material internal is realized multiple spot distributions, differentiation simultaneously, real-time online, permanent detection to many physical quantitys such as pressure, temperature, stress, strain, flow velocity, flow.It detects principle is that wavelength shift, phase change, the polarization state that is caused fiber grating reflection or transmission spectrum by the variation of measurand changes and Strength Changes basically, reaches testing goal to measurand by these spectrum change of demodulation.Because fiber grating has little, in light weight, corrosion-resistant, the anti-electromagnetic interference (EMI) of volume, many essential advantage such as easy of integration, simple in structure, so since the appearance seventies in 20th century, be subjected to common concern both domestic and external.People do one's utmost to explore the application of its light sensing detection aspect.
Technology contents
The purpose of this utility model is to provide a kind of oil gas such as long oil and gas pipeline burn into crack, wax deposition, fouling that are applicable to transport condition detection, cooperate the fiber optic network signal transmission system, can realize many reference amounts, multiple spot Distributed Detection and stress response sensitivity 0.05～0.15nm/ μ ε, a kind of fiber-optic grating sensor that is used for the oil and gas pipes detection of pressure response sensitivity 0.10～0.20nm/Mpa.
The utility model is achieved in that and comprises the optical fiber 1 of writing grating, bonding agent 2, encapsulation sleeve pipe 3, inlet channel 4, survey stress fiber grating 5, the fine grating 6 of flow measurement press polish, piston 7, encapsulation sleeve pipe 3 is built-in with optical fiber 1, survey stress fiber grating 5, the fine grating 6 of flow measurement press polish, survey stress fiber grating 5, the fine grating 6 of flow measurement press polish is on same optical fiber 1, optical fiber 1 is connected by bonding agent 2 with encapsulation sleeve pipe 3, encapsulation sleeve pipe 3 is provided with inlet channel 4, there is piston 7 end at the fine grating 6 of flow measurement press polish, and the fine grating 6 of flow measurement press polish is fixedlyed connected with piston 7 by the joints of optical fibre.
The utility model also adopts following technical scheme:
Survey stress fiber grating 5 and be close to inner-walls of duct, two is bonding by bonding agent 2 sealings with encapsulation sleeve pipe 3.
The fine grating 6 of flow measurement press polish in encapsulation sleeve pipe 3 with piston 7 axial displacement synchronously.
The radius φ of inlet channel 4 is the round osculum of 2～3mm, respectively over against the fine grating 6 of flow measurement press polish.
Piston 7 forms movingly with encapsulation sleeve pipe 3 inwalls.
The present optical fiber communication Bragg grating that generally uses of fiber grating that advantage of the present utility model, (1) are exclusively used in sensing testing has bigger strain and temperature-responsive sensitivity, improves 100 times respectively.(2) this sensor with at present in pipe detection general mechanical stress Strain Method, sonic method, inductive electromagnetic method sensor compare have volume little, simple in structure, survey the general advantage such as wide, sensitivity height of enclosing.Bury and overlay on inner-walls of duct, in conjunction with optical fiber network system, a plurality of sensors that can distribute realize that multiple spot distributes, the permanent in real time detection of many reference amounts.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Concrete enforcement
The utility model comprise be used to write grating be coated with the anti-tired consumptive disease silica fibre 1 of carbon covering, high temperature resistance and high strength bonding fiber agent 2, polyamide-based compound substance encapsulation sleeve pipe 3, comprise inside and outside wall radius and selection, the oil and gas import groove of on sleeve pipe, opening 4, survey stress fiber grating 5 and fine grating 6 of flow measurement press polish and piston 7, polyphone on an optical fiber 1 connects and encapsulation is laid, be close to inner-walls of duct below the survey stress fiber grating 5, two is bonding with encapsulation sleeve pipe 3 usefulness high temperature resistance and high strength bonding fiber agent 2 tightening seals, make this grating and pipeline that synchronous strain take place, the induction pipe ess-strain, and do not produce axial displacement with flow measurement press polish grid 6 and piston 7.Synchronous axial displacement takes place at encapsulation sleeve pipe 3 with piston 7 in the fine grating 6 of flow measurement press polish, and induction pipe stream is pressed and changed.
When fission or corrosion default take place in duct wall, stress changes, cause that bonding burying overlays on the axial stress variation of surveying stress fiber grating 5 on the duct wall, when the near infrared light beam imports this fiber grating into, the optical characteristics of its transmission spectrum and reflectance spectrum will change, feed back to tracking telemetry and command station by the fiber optic network signal transmission system and carry out the signal demodulation, draw the situation of corrosive pipeline fission.
When hydrocarbon fluids flows into inlet channel 4, act on the fine grating 6 of sensitive element flow measurement press polish, cause that under the effect of piston 7 the fiber grating axial stress changes, the reflection and the transmitted spectrum characteristic of fiber grating have been changed, feed back to tracking telemetry and command station by the fiber optic network signal transmission system and carry out the signal demodulation, draw the drift angle of hydrocarbon fluids in the pipeline, thus evaluation pipeline working condition.
Claims (5)
1. one kind is used for the fiber-optic grating sensor that oil and gas pipes detects, comprise optical fiber (1), bonding agent (2), encapsulation sleeve pipe (3), inlet channel (4), survey stress fiber grating (5), the fine grating (6) of flow measurement press polish, piston (7), it is characterized in that: encapsulation sleeve pipe (3) is built-in with optical fiber (1), survey stress fiber grating (5), the fine grating (6) of flow measurement press polish, survey stress fiber grating (5), the fine grating of flow measurement press polish (6) is on same optical fiber (1), optical fiber (1) is connected by bonding agent (2) with encapsulation sleeve pipe (3), encapsulation sleeve pipe (3) is provided with inlet channel (4), there is piston (7) end at the fine grating of flow measurement press polish (6), and the fine grating of flow measurement press polish (6) is fixedlyed connected with piston (7) by the joints of optical fibre.
2. a kind of fiber-optic grating sensor that oil and gas pipes detects that is used for according to claim 1 is characterized in that: survey stress fiber grating (5) and be close to inner-walls of duct, two is bonding by bonding agent (2) sealing with encapsulation sleeve pipe (3).
3. a kind of fiber-optic grating sensor that oil and gas pipes detects that is used for according to claim 1 is characterized in that: the fine grating of flow measurement press polish (6) in encapsulation sleeve pipe (3) with piston (7) axial displacement synchronously.
4. a kind of fiber-optic grating sensor that oil and gas pipes detects that is used for according to claim 1, it is characterized in that: the radius of inlet channel (4) is the round osculum of 2～3mm, respectively over against the fine grating (6) of flow measurement press polish.
5. a kind of fiber-optic grating sensor that oil and gas pipes detects that is used for according to claim 1 is characterized in that: piston (7) forms movingly with encapsulation sleeve pipe (3) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02246122 CN2567548Y (en) | 2002-09-13 | 2002-09-13 | Fibre-optical grating sensor for testing gas-oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02246122 CN2567548Y (en) | 2002-09-13 | 2002-09-13 | Fibre-optical grating sensor for testing gas-oil pipe |
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| Publication Number | Publication Date |
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| CN2567548Y true CN2567548Y (en) | 2003-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02246122 Expired - Fee Related CN2567548Y (en) | 2002-09-13 | 2002-09-13 | Fibre-optical grating sensor for testing gas-oil pipe |
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| CN (1) | CN2567548Y (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293375C (en) * | 2004-09-13 | 2007-01-03 | 西安交通大学 | Sensitive optical cable for long distance oil-gas pipeline safety detection |
| CN1303411C (en) * | 2004-07-19 | 2007-03-07 | 天津大学 | Interference distributed fibre-optical pipe leakage real-time monitoring method and device |
| CN100337094C (en) * | 2004-07-20 | 2007-09-12 | 重庆大学 | Method and system of optical fibre interference type auto-monitoring for long distance pipeline safety monitoring |
| CN100353167C (en) * | 2005-11-04 | 2007-12-05 | 南开大学 | Sensing device for optical fiber optical grating flow speed |
| CN100363768C (en) * | 2005-07-29 | 2008-01-23 | 中国船舶重工集团公司第七二五研究所 | Process of preparing long period optical fiber raster for copper ion detecting |
| CN100412510C (en) * | 2006-06-30 | 2008-08-20 | 哈尔滨工业大学 | Fiber grating sensor for simultaneously measuring displacement and pressure |
| CN100478724C (en) * | 2007-03-08 | 2009-04-15 | 山东大学 | Universal separate prefabricated plugging optical fiber grating sensor and producing and using method thereof |
| CN101334331B (en) * | 2007-06-27 | 2011-04-20 | 中国石油天然气股份有限公司 | Distributed type optical fibre pipeline safe early-warning system based on phase interference |
| CN102062730A (en) * | 2010-12-20 | 2011-05-18 | 天津亿利科能源科技发展股份有限公司 | Buried oil pipeline external-corrosion real-time monitoring device based on optical fiber sensor |
| CN102175524A (en) * | 2011-01-19 | 2011-09-07 | 东南大学 | Loading device and method for testing durability of cement-based material |
| CN101324189B (en) * | 2008-07-28 | 2011-12-21 | 西安石油大学 | External pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor |
| CN1908505B (en) * | 2006-08-04 | 2012-01-04 | 天津爱天光电子科技有限公司 | Alarm sensing system for distributed optical fiber oil and gas pipeline |
| CN101667326B (en) * | 2008-09-03 | 2012-01-11 | 中国石油天然气股份有限公司 | Method and system for monitoring and warning influence of landslide on pipeline |
| CN102345795A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN101587068B (en) * | 2009-05-27 | 2012-03-28 | 陈小英 | Multi-sensor gas analyzer |
| CN101324188B (en) * | 2008-07-28 | 2012-05-02 | 西安石油大学 | Inner pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor |
| CN101397903B (en) * | 2008-11-05 | 2012-08-29 | 大庆油田有限责任公司 | Method for monitoring sleeve circumferential strain by using optical fibre grating sensor |
| CN103884290A (en) * | 2012-12-21 | 2014-06-25 | 苏州南智传感科技有限公司 | Ground fracture and deformation monitoring device based on distributed optical-fiber fixed-point sensing technology |
| CN105387351A (en) * | 2015-10-22 | 2016-03-09 | 中国船舶重工集团公司第七六○研究所 | Underwater oil conveying pipeline leakage monitoring method based on DBR fiber laser sensor |
| CN105841878A (en) * | 2016-05-17 | 2016-08-10 | 中国电子科技集团公司第八研究所 | High temperature resistance fiber bragg grating pressure sensor |
| CN107218516A (en) * | 2017-07-19 | 2017-09-29 | 中国水利水电科学研究院 | A kind of water delivery in pipeline system multiple spot minute leakage detection means and method |
| CN108956695A (en) * | 2018-07-27 | 2018-12-07 | 黑龙江大学 | A kind of photo-thermal catalysis gas leakage sensor and its detection method based on fiber grating detection |
| CN109373968A (en) * | 2018-12-29 | 2019-02-22 | 厦门大学嘉庚学院 | A kind of template settlement monitoring sensor and its working method based on Fiber Bragg Grating technology |
| WO2020140418A1 (en) * | 2019-01-03 | 2020-07-09 | 大连理工大学 | Non-destructive monitoring method for internal pressure of pipeline |
| CN112833950A (en) * | 2021-01-07 | 2021-05-25 | 中国舰船研究设计中心 | Distributed measurement system for complex flow field in steam pipeline based on optical fiber sensing |
-
2002
- 2002-09-13 CN CN 02246122 patent/CN2567548Y/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303411C (en) * | 2004-07-19 | 2007-03-07 | 天津大学 | Interference distributed fibre-optical pipe leakage real-time monitoring method and device |
| CN100337094C (en) * | 2004-07-20 | 2007-09-12 | 重庆大学 | Method and system of optical fibre interference type auto-monitoring for long distance pipeline safety monitoring |
| CN1293375C (en) * | 2004-09-13 | 2007-01-03 | 西安交通大学 | Sensitive optical cable for long distance oil-gas pipeline safety detection |
| CN100363768C (en) * | 2005-07-29 | 2008-01-23 | 中国船舶重工集团公司第七二五研究所 | Process of preparing long period optical fiber raster for copper ion detecting |
| CN100353167C (en) * | 2005-11-04 | 2007-12-05 | 南开大学 | Sensing device for optical fiber optical grating flow speed |
| CN100412510C (en) * | 2006-06-30 | 2008-08-20 | 哈尔滨工业大学 | Fiber grating sensor for simultaneously measuring displacement and pressure |
| CN1908505B (en) * | 2006-08-04 | 2012-01-04 | 天津爱天光电子科技有限公司 | Alarm sensing system for distributed optical fiber oil and gas pipeline |
| CN100478724C (en) * | 2007-03-08 | 2009-04-15 | 山东大学 | Universal separate prefabricated plugging optical fiber grating sensor and producing and using method thereof |
| CN101334331B (en) * | 2007-06-27 | 2011-04-20 | 中国石油天然气股份有限公司 | Distributed type optical fibre pipeline safe early-warning system based on phase interference |
| CN101324188B (en) * | 2008-07-28 | 2012-05-02 | 西安石油大学 | Inner pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor |
| CN101324189B (en) * | 2008-07-28 | 2011-12-21 | 西安石油大学 | External pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor |
| CN101667326B (en) * | 2008-09-03 | 2012-01-11 | 中国石油天然气股份有限公司 | Method and system for monitoring and warning influence of landslide on pipeline |
| CN101397903B (en) * | 2008-11-05 | 2012-08-29 | 大庆油田有限责任公司 | Method for monitoring sleeve circumferential strain by using optical fibre grating sensor |
| CN101587068B (en) * | 2009-05-27 | 2012-03-28 | 陈小英 | Multi-sensor gas analyzer |
| CN102345795A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN102345795B (en) * | 2010-07-28 | 2014-01-15 | 中国石油天然气股份有限公司 | Method and system for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN102062730A (en) * | 2010-12-20 | 2011-05-18 | 天津亿利科能源科技发展股份有限公司 | Buried oil pipeline external-corrosion real-time monitoring device based on optical fiber sensor |
| CN102062730B (en) * | 2010-12-20 | 2013-06-19 | 天津亿利科能源科技发展股份有限公司 | Buried oil pipeline external-corrosion real-time monitoring device based on optical fiber sensor |
| CN102175524A (en) * | 2011-01-19 | 2011-09-07 | 东南大学 | Loading device and method for testing durability of cement-based material |
| CN103884290A (en) * | 2012-12-21 | 2014-06-25 | 苏州南智传感科技有限公司 | Ground fracture and deformation monitoring device based on distributed optical-fiber fixed-point sensing technology |
| CN105387351A (en) * | 2015-10-22 | 2016-03-09 | 中国船舶重工集团公司第七六○研究所 | Underwater oil conveying pipeline leakage monitoring method based on DBR fiber laser sensor |
| CN105841878A (en) * | 2016-05-17 | 2016-08-10 | 中国电子科技集团公司第八研究所 | High temperature resistance fiber bragg grating pressure sensor |
| CN107218516A (en) * | 2017-07-19 | 2017-09-29 | 中国水利水电科学研究院 | A kind of water delivery in pipeline system multiple spot minute leakage detection means and method |
| CN107218516B (en) * | 2017-07-19 | 2018-12-21 | 中国水利水电科学研究院 | A kind of water delivery in pipeline system multiple spot minute leakage detection device and method |
| CN108956695A (en) * | 2018-07-27 | 2018-12-07 | 黑龙江大学 | A kind of photo-thermal catalysis gas leakage sensor and its detection method based on fiber grating detection |
| CN108956695B (en) * | 2018-07-27 | 2020-11-03 | 黑龙江大学 | Photo-thermal catalysis gas leakage sensor based on fiber bragg grating detection and detection method thereof |
| CN109373968A (en) * | 2018-12-29 | 2019-02-22 | 厦门大学嘉庚学院 | A kind of template settlement monitoring sensor and its working method based on Fiber Bragg Grating technology |
| WO2020140418A1 (en) * | 2019-01-03 | 2020-07-09 | 大连理工大学 | Non-destructive monitoring method for internal pressure of pipeline |
| US10989615B2 (en) | 2019-01-03 | 2021-04-27 | Dalian University Of Technology | Non-destructive monitoring method for internal pressure intensity of pipeline |
| CN112833950A (en) * | 2021-01-07 | 2021-05-25 | 中国舰船研究设计中心 | Distributed measurement system for complex flow field in steam pipeline based on optical fiber sensing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030820 Termination date: 20091013 |