CN204552808U - Mine gas drainage pipeline optic-fiber monitoring system - Google Patents
Mine gas drainage pipeline optic-fiber monitoring system Download PDFInfo
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- CN204552808U CN204552808U CN201420836575.2U CN201420836575U CN204552808U CN 204552808 U CN204552808 U CN 204552808U CN 201420836575 U CN201420836575 U CN 201420836575U CN 204552808 U CN204552808 U CN 204552808U
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Abstract
The utility model is a kind of coal mine gas extraction pipeline optic-fiber monitoring system, comprise hardware and software, hardware system comprises 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.Software systems comprise computer, background data base and data communication protocol.Beneficial effect: 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.
Description
Technical field
The utility model relates to pipe monitoring apparatus field, is 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.
Utility model content
The purpose of this utility model is, for the problems referred to above, proposes 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 adopted in the utility model 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 beneficial effects of the utility model are: 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 the utility model structural principle schematic diagram;
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, preferred embodiment of the present utility model is described, should be appreciated that embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
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 (5)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420836575.2U CN204552808U (en) | 2014-12-26 | 2014-12-26 | Mine gas drainage pipeline optic-fiber monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420836575.2U CN204552808U (en) | 2014-12-26 | 2014-12-26 | Mine gas drainage pipeline optic-fiber monitoring system |
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| CN204552808U true CN204552808U (en) | 2015-08-12 |
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| CN201420836575.2U Active CN204552808U (en) | 2014-12-26 | 2014-12-26 | Mine gas drainage pipeline optic-fiber monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653221A (en) * | 2014-12-26 | 2015-05-27 | 山东东宏管业股份有限公司 | Coal mine gas drainage pipeline optical fiber monitoring system |
| CN108442973A (en) * | 2018-03-17 | 2018-08-24 | 河南理工大学 | Coal-bed gas dynamic pressure evaluating method based on Optical Fiber Sensing Array distribution measuring |
-
2014
- 2014-12-26 CN CN201420836575.2U patent/CN204552808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653221A (en) * | 2014-12-26 | 2015-05-27 | 山东东宏管业股份有限公司 | Coal mine gas drainage pipeline optical fiber monitoring system |
| CN108442973A (en) * | 2018-03-17 | 2018-08-24 | 河南理工大学 | Coal-bed gas dynamic pressure evaluating method based on Optical Fiber Sensing Array distribution measuring |
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