CN104653221A - Coal mine gas drainage pipeline optical fiber monitoring system - Google Patents
Coal mine gas drainage pipeline optical fiber monitoring system Download PDFInfo
- Publication number
- CN104653221A CN104653221A CN201410821930.3A CN201410821930A CN104653221A CN 104653221 A CN104653221 A CN 104653221A CN 201410821930 A CN201410821930 A CN 201410821930A CN 104653221 A CN104653221 A CN 104653221A
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- Prior art keywords
- sensor
- fiber
- coal mine
- optic
- pipeline
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 title claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pipeline Systems (AREA)
Abstract
The invention provides a coal mine gas drainage pipeline optical fiber monitoring system which comprises hardware and software, wherein a hardware system comprises an optical fiber temperature sensor, an optical fiber pressure sensor, an optical fiber laser gas sensor, an optical fiber flow sensor, a single mode fiber, a coupler, a multi-core optical cable, a fiber bragg grating demodulation instrument and an optical fiber gas demodulation instrument; a software system comprises a computer, a background database and a data correspondence protocol. The carrying system has the beneficial effects that a fiber bragg grating sensing technology is introduced into the field of coal mine downhole pipeline monitoring; a software-hardware test system applicable to inflammable and explosive environments and other environments is developed, and the all-day uninterrupted monitoring requirement for important parts of a coal mine downhole gas drainage pipeline is met.
Description
Technical field
The present invention relates to pipe monitoring apparatus field, be specifically related to a kind of mine gas drainage pipeline optic-fiber monitoring system.
Background technology
Underground coal mine supplies water, ventilate and gas drainage under suction pipe network is called as " lifeline " of down-hole, is the important ingredient of Safety of Coal Mine Production.Supply water in China's coal-mine down-hole, ventilate and gas drainage pipeline most be laying installation during building ore deposit, because down-hole natural conditions are severe, pipeline for a long time by trickle erosion, roadway deformation, dynamic pressure etc. adopted by mine affects, the situation causing coal-face, boring head to produce because of pipeline fracture or insufficient pressure impact happens occasionally.Waste precious resources, affects the normal production of mine, causes larger economic loss to enterprise.
For the operation service condition of oil well pipe, current China's coal-mine takes the method for artificial inspection to check, inefficiency, the manpower and materials of at substantial; Can not the operating condition of Real-Time Monitoring pipeline, occur that accident is difficult to Timeliness coverage; Easily there is under-enumeration in inspection personnel.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of mine gas drainage pipeline optic-fiber monitoring system, with realize pipeline round-the-clock, monitor in real time.The features such as native system has essential safety, reliability is high, reusability is strong, long transmission distance, by covering whole gas drainage under suction, the gas density of water supply network, temperature, pressure, flow monitoring point, grasp pipe network operation state situation of change, the abnormal conditions such as pipe leakage are reported to the police and judges leakage point position, the impact because insufficient pressure produces getting working face can be shortened to greatest extent, ensure that the normal safe of mine is produced, for user brings significant safety benefit and economic benefit.
For realizing above-mentioned target, the technical solution used in the present invention is: a kind of coal mine gas extraction pipeline optic-fiber monitoring system, comprise fibre optic temperature sensor, fibre optic compression sensor, optical-fiber laser firedamp sensor, optic flow sensor, single-mode fiber, coupler, multifiber cable, fiber Bragg grating (FBG) demodulator, optical fiber gas (FBG) demodulator, computer, wherein optic flow sensor, temperature pick up, pressure sensor are by single-mode fiber butt coupling device, and coupler is by multifiber cable connecting fiber grating demodulation instrument; Firedamp sensor directly connects gas (FBG) demodulator by multifiber cable; Fiber Bragg grating (FBG) demodulator, gas (FBG) demodulator connect computer by RS485 interface.
Described optic flow sensor, firedamp sensor, temperature pick up, pressure sensor should be installed successively on pipeline flow direction, and pipe laying total length is no more than 1.5m, adopt gas-filtering device before firedamp sensor air inlet port.
Described pressure sensor, temperature pick up are vertically fixed on directly over pipeline respectively by pipeline tracting pressuring hole.
Described temperature pick up, pressure sensor and firedamp sensor joint all adopt external thread type.
Described temperature sensor probe will insert gas tube inside, and insertion depth is greater than 1/3 of pipe interior diameter, is less than pipe interior diameter 1/2.
This system is equally applicable to underground coal mine water supply, air feed and other liquid or gas pipeline.
The invention has the beneficial effects as follows: fiber grating sensing technology is introduced underground coal mine Monitoring Pinpelines field, develop the software and hardware test macro be suitable under the environment such as inflammable, explosive, meet round-the-clock, the unremitting detection requirement of coal mine gas extraction pipeline significant points.
Coordinate online-monitoring software real time on-line monitoring key position whether to exceed warning value and the information that gives a warning, guarantee real-time and the reliability of image data, for providing at coal mine gas drainage for a long time, a large amount of, comprehensively, reliable basic data.
By pipeline pressure change of gradient and flow equilibrium algorithm realization line leakage and location, significant to the normal operation and personnel in the pit's safety ensureing whole pipe-line system.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is sensor scheme of installation.
In figure, 1. pipeline, 2. optic flow sensor, 3. fibre optic compression sensor, 4. fibre optic temperature sensor, 5. optical fiber gas sensor, 6. single-mode fiber, 7. coupler, 8. multifiber cable, 9. communication protocol, 10. gas (FBG) demodulator, 11. fiber Bragg grating (FBG) demodulators, 12. computers, 13. databases.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
As shown in Figure 1, for the optic-fiber monitoring system in gas drainage under suction, comprise fibre optic temperature sensor 4, fibre optic compression sensor 3, optical-fiber laser firedamp sensor 5, optic flow sensor 2, single-mode fiber 6, coupler 7, multifiber cable 8, fiber Bragg grating (FBG) demodulator 11, optical fiber gas (FBG) demodulator 10, computer 12 form.Wherein optic flow sensor 2, temperature pick up 4, pressure sensor 3 are by single-mode fiber 6 butt coupling device 7, and coupler 7 is by multifiber cable connecting fiber grating demodulation instrument 11.Firedamp sensor directly connects gas (FBG) demodulator 10 by multifiber cable.Fiber Bragg grating (FBG) demodulator 11, gas (FBG) demodulator 10 connect computer by RS485 interface.Computer, by resolving detection signal, processing, realizes the Real-Time Monitoring to pipe temperature, pressure, gas density, flow and leakage location; As shown in Figure 2, optic flow sensor, firedamp sensor, temperature pick up, pressure sensor should be installed successively on pipeline flow direction, and pipe laying total length is no more than 1.5m; Flow transmitter generally adopts flange connection to be fixed on conduit air inlet foremost; Adopt gas-filtering device before firedamp sensor air inlet port, air outlet side is connected with gas tube, to form loop, avoids gas leakage; Temperature pick up, pressure sensor are vertically fixed on directly over pipeline respectively by pipeline tracting pressuring hole, and in pipeline, depositing blocking tracting pressuring hole to avoid dregs affects certainty of measurement; Temperature pick up, pressure sensor and firedamp sensor joint all adopt external thread type, during in-site installation, directly sensor are screwed on pipeline by nipple, for ensureing sealing, can use sealant tape in joint; Temperature sensor probe will insert gas tube inside, and insertion depth is greater than 1/3 of pipe interior diameter, is less than pipe interior diameter 1/2.
Native system is equally applicable to other liquid or the gas pipelines such as underground coal mine water supply, air feed.
Claims (6)
1. a coal mine gas extraction pipeline optic-fiber monitoring system, comprise fibre optic temperature sensor, fibre optic compression sensor, optical-fiber laser firedamp sensor, optic flow sensor, single-mode fiber, coupler, multifiber cable, fiber Bragg grating (FBG) demodulator, optical fiber gas (FBG) demodulator, computer, it is characterized in that: optic flow sensor wherein, temperature pick up, pressure sensor are arranged on pipeline flow direction and each via single-mode fiber butt coupling device, coupler is by multifiber cable connecting fiber grating demodulation instrument; Firedamp sensor directly connects gas (FBG) demodulator by multifiber cable; Fiber Bragg grating (FBG) demodulator, gas (FBG) demodulator connect computer by RS485 interface; Gas-filtering device is adopted before firedamp sensor air inlet port.
2. coal mine gas extraction pipeline optic-fiber monitoring system according to claim 1, it is characterized in that: optic flow sensor, firedamp sensor, temperature pick up, pressure sensor are arranged on pipeline flow direction successively, and pipe laying total length is no more than 1.5m.
3. coal mine gas extraction pipeline optic-fiber monitoring system according to claim 2, is characterized in that: described pressure sensor, temperature pick up are vertically fixed on directly over pipeline respectively by pipeline tracting pressuring hole.
4. coal mine gas extraction pipeline optic-fiber monitoring system according to claim 3, is characterized in that: described temperature pick up, pressure sensor and firedamp sensor joint all adopt external thread type.
5. coal mine gas extraction pipeline optic-fiber monitoring system according to claim 4, it is characterized in that: described temperature sensor probe will insert gas tube inside, insertion depth is greater than 1/3 of pipe interior diameter, is less than pipe interior diameter 1/2.
6. the coal mine gas extraction pipeline optic-fiber monitoring system according to claim 1-4, is characterized in that: this system is equally applicable to underground coal mine water supply, air feed and other liquid or gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821930.3A CN104653221A (en) | 2014-12-26 | 2014-12-26 | Coal mine gas drainage pipeline optical fiber monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821930.3A CN104653221A (en) | 2014-12-26 | 2014-12-26 | Coal mine gas drainage pipeline optical fiber monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104653221A true CN104653221A (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410821930.3A Pending CN104653221A (en) | 2014-12-26 | 2014-12-26 | Coal mine gas drainage pipeline optical fiber monitoring system |
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| Country | Link |
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| CN (1) | CN104653221A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
| CN106958742A (en) * | 2017-03-08 | 2017-07-18 | 武汉理工大学 | The optical fiber grating sensing pipeline health monitoring systems of many reference amounts |
| CN108397187A (en) * | 2018-03-17 | 2018-08-14 | 河南理工大学 | Optical Fiber Sensing Array formula acquisition system for coal-bed gas dynamic pressure measurement |
| CN108758353A (en) * | 2018-06-12 | 2018-11-06 | 青岛汇安谷科技发展有限公司 | Distribution type fiber-optic many reference amounts pipe leakage positioning alarm system and leakage locating method |
| CN109798151A (en) * | 2019-01-07 | 2019-05-24 | 中国矿业大学 | A kind of method of intellectual monitoring methane gas extraction pipeline operation conditions |
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| KR20040065515A (en) * | 2003-01-13 | 2004-07-22 | 글로벌광통신 (주) | Fire detector system to take advantage of multi optical fiber bragg gratings |
| CN101144380A (en) * | 2007-08-28 | 2008-03-19 | 天津爱天光电子科技有限公司 | High sensitivity lateral opening optical fiber optical grating temperature pressure sensing detecting system unrelated with polarization |
| CN102562036A (en) * | 2012-01-17 | 2012-07-11 | 北京奥飞搏世技术服务有限公司 | Pressure and temperature monitor system of coal gas bed well based on optical fiber sensing |
| CN203037388U (en) * | 2013-01-14 | 2013-07-03 | 东北石油大学 | Pipeline stress monitoring system based on FBG (fiber bragg grating) |
| CN204552808U (en) * | 2014-12-26 | 2015-08-12 | 山东东宏管业股份有限公司 | Mine gas drainage pipeline optic-fiber monitoring system |
-
2014
- 2014-12-26 CN CN201410821930.3A patent/CN104653221A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040065515A (en) * | 2003-01-13 | 2004-07-22 | 글로벌광통신 (주) | Fire detector system to take advantage of multi optical fiber bragg gratings |
| CN101144380A (en) * | 2007-08-28 | 2008-03-19 | 天津爱天光电子科技有限公司 | High sensitivity lateral opening optical fiber optical grating temperature pressure sensing detecting system unrelated with polarization |
| CN102562036A (en) * | 2012-01-17 | 2012-07-11 | 北京奥飞搏世技术服务有限公司 | Pressure and temperature monitor system of coal gas bed well based on optical fiber sensing |
| CN203037388U (en) * | 2013-01-14 | 2013-07-03 | 东北石油大学 | Pipeline stress monitoring system based on FBG (fiber bragg grating) |
| CN204552808U (en) * | 2014-12-26 | 2015-08-12 | 山东东宏管业股份有限公司 | Mine gas drainage pipeline optic-fiber monitoring system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
| CN106958742A (en) * | 2017-03-08 | 2017-07-18 | 武汉理工大学 | The optical fiber grating sensing pipeline health monitoring systems of many reference amounts |
| CN108397187A (en) * | 2018-03-17 | 2018-08-14 | 河南理工大学 | Optical Fiber Sensing Array formula acquisition system for coal-bed gas dynamic pressure measurement |
| CN108397187B (en) * | 2018-03-17 | 2021-09-21 | 河南理工大学 | Optical fiber sensing array type acquisition system for coal bed gas dynamic pressure measurement |
| CN108758353A (en) * | 2018-06-12 | 2018-11-06 | 青岛汇安谷科技发展有限公司 | Distribution type fiber-optic many reference amounts pipe leakage positioning alarm system and leakage locating method |
| CN109798151A (en) * | 2019-01-07 | 2019-05-24 | 中国矿业大学 | A kind of method of intellectual monitoring methane gas extraction pipeline operation conditions |
| CN109798151B (en) * | 2019-01-07 | 2020-04-10 | 中国矿业大学 | Method for intelligently monitoring operation condition of gas extraction pipeline |
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Application publication date: 20150527 |