CN104236605A - Coal mine fiber brag grating system for reducing accident rate - Google Patents
Coal mine fiber brag grating system for reducing accident rate Download PDFInfo
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- CN104236605A CN104236605A CN201410533443.7A CN201410533443A CN104236605A CN 104236605 A CN104236605 A CN 104236605A CN 201410533443 A CN201410533443 A CN 201410533443A CN 104236605 A CN104236605 A CN 104236605A
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Abstract
The invention belongs to the field of coal mine accident prevention and discloses a coal mine fiber brag grating system for reducing accident rate. The coal mine fiber brag grating system comprises multiple fiber brag grating sensors, a fiber demodulator, a fiber splice closure, a spray cooling system, a control center, a firefighting linkage control host and the like. 10 sensors are jointed into a small strand, 9 sensors are jointed into a big strand, and 6 big strands of the fiber brag grating sensors are jointed into a transmission well returning to the control center and the firefighting linkage control host. Fiber brag gratings of the fiber brag grating sensors are processed by means of strain control; the firefighting linkage control host takes corresponding measurers to handle corresponding circumstances at six levels according to temperature of underground measured points from 20 DEG C to 300 DEG C.
Description
technical field]
the present invention relates to coal mining accident to take precautions against, specifically a kind of colliery fiber grating system for reducing accident rate.
background technology]
The change of ambient temperature or adaptability to changes can cause fiber grating bragg wavelength-shift.Current art can use rational packaged type by naked grating and the isolation of extraneous protective seam, extraneous strain can not be delivered on fibre core, thus make the condition causing wavelength-shift only have temperature.Because optical fiber grating temperature detector core component is silicon dioxide material, silicon dioxide essential safety, so optical fiber grating temperature detector itself can not cause danger to colliery.In existing coal-mine fire accident, be because gas, dust concentration reach finite concentration mostly, and temperature also reach critical value and blast.These two conditions are indispensable, if so the coal mining accident incidence utilizing Fiber Bragg Grating technology to reduce Yin Wendu and cause, monitor the exception of temperature, and start manual intervention or automatic fire extinguishing system, fire failure will be controlled in bud.
[summary of the invention]
Object of the present invention, is to provide a kind of colliery fiber grating system for reducing accident rate.
Technical scheme of the present invention is as follows:
For reducing a colliery fiber grating system for accident rate, comprise multiple fiber-optic grating sensor, optical fibre interrogation instrument, fiber optic closure, connects optical cable, dry-ice fire extinguisher, the miniature airtight water tank laid at pressure handle place, the conduit laid at water tank place, spraying cooling system, signal processing circuit, photoelectric switching circuit, computing machine, control center, and fire protection linkage control main frame, distribution method is as follows:
In the region, tunnel, down-hole that there is risk, described fiber-optic grating sensor is laid every the deployment interval of 2.95 meters, point is implemented in the region, non-tunnel that there is risk, lay two identical described fiber-optic grating sensors, each described fiber-optic grating sensor and cloth set up an office and carry out one_to_one corresponding and number and lay, 10 described fiber-optic grating sensors become a fiber-optic grating sensor shallow bid, 9 described shallow bids are become a large stock of fiber-optic grating sensor, 6 large stocks of described fiber-optic grating sensor are become a transmission well and passes control center and fire protection linkage control main frame back, the fiber grating of described fiber-optic grating sensor is subject to strain controlling process, and namely fiber grating position gravitate presents natural torsion shape, then installs photosensitive glue additional at two ends, fiber grating position, irradiates heavy dose of ultraviolet subsequently,
Connecting with connecting optical cable between fiber-optic grating sensor, connecting with fiber optic closure between the large stock of described fiber-optic grating sensor, and being all connected to the optical fibre interrogation instrument being arranged in control center;
Described optical fibre interrogation instrument arranges photoelectric switching circuit, signalization treatment circuit in described computing machine;
Described computer installation in control center, and is connected to fire protection linkage control main frame;
Described colliery fiber grating system operating mode is as follows:
The data that described in Computer Analysis, optical fiber cable sensor is passed back draw the temperature of down-hole point for measuring temperature, when the temperature of down-hole point for measuring temperature is less than 20 DEG C, think that all are in controllable state, and fire protection linkage control main frame does not do and reacts; When temperature is between 20 DEG C to 45 DEG C, even without emergency condition, but delimit viewing area, allow personnel in the pit's primary part observation, in staff's tour work, add the observation for this region simultaneously; When in 10 minutes, temperature is increased beyond 10 DEG C, system will launch emergency provision immediately, and down-hole related personnel will ascertain the reason immediately, starts cooling installation simultaneously; When temperature reaches between 45 DEG C to 90 DEG C, when not evacuating personnel, start cooling system, now except original spraying cooling system, also in described conduit, inject water, produce huge hydraulic pressure, press the handle of the dry-ice fire extinguisher being placed on conduit mouth, dry ice is sprayed, produces cooling-down effect; When temperature is between 90 DEG C to 300 DEG C, immediate evacuation closes on personnel, starts all cooling systems simultaneously, comprises and injects part water; Temperature measure be greater than 300 DEG C time, all personnels in the pit of immediate evacuation, inject mud to down-hole, implement all cooling measures.
The method for making of the fiber-optic grating sensor of colliery of the present invention fiber grating system is as follows:
(1) bare optical fibers and bare optical gratings is pierced into the optical fiber loose tube of 0.9mm; By unsettled in the aluminum pipe of 10cm length for the fiber grating piercing into optical fiber loose tube;
(2) heat sealing machine is utilized optical fiber and fibre-optical splice to be welded;
(3) by after yellow sheath in the sensor sleeve that welds, evenly apply at Loose tube with 703b glue, finally with heat-shrink tube, its pyrocondensation is fixed.
Colliery fiber grating system for reducing accident rate of the present invention can keep in accident safe while Real-Time Monitoring temperature, fire failure is in Guaranteed, successfully can be applied to and reduces the incidence of coal mining accident.
[accompanying drawing explanation]
Fig. 1 is the arrangenent diagram of colliery of the present invention fiber grating system.
Fig. 2 is the structural drawing of optical fiber cable sensor of the present invention.
Fig. 3 is the block scheme of the observation circuit of colliery of the present invention fiber grating system.
Fig. 4 is the block scheme of the signal processing circuit of colliery of the present invention fiber grating system
[embodiment]
See Fig. 1, the present invention is arranged in the tunnel in colliery for reducing the colliery fiber grating system of accident rate by multiple fiber-optic grating sensor 7, in the region, tunnel, down-hole that there is risk, described fiber-optic grating sensor 7 is laid every the deployment interval of 2.95 meters, point is implemented in the region, non-tunnel that there is risk, lay two identical described fiber-optic grating sensors 7, each described fiber-optic grating sensor and cloth set up an office and carry out one_to_one corresponding and number and lay, 10 described fiber-optic grating sensors become a fiber-optic grating sensor shallow bid, 9 described shallow bids are become a large stock of fiber-optic grating sensor, 6 large stocks of described fiber-optic grating sensor are become a transmission well and passes control center 11 and fire protection linkage control main frame 21 back.In tunnel, arrange spraying cooling system 6 simultaneously.Optical fibre interrogation instrument, fiber optic closure, connects optical cable, dry-ice fire extinguisher, the miniature airtight water tank laid at pressure handle place, the conduit laid at water tank place, spraying cooling system, signal processing circuit, photoelectric switching circuit, computing machine, control center, and fire-fighting link main frame.Connecting with connecting optical cable 9 between fiber-optic grating sensor 7, connecting with fiber optic closure 8 between the large stock of described fiber-optic grating sensor, and be all connected to the optical fibre interrogation instrument being arranged in control center 11.
Fig. 2 is the structural drawing of fiber-optic grating sensor of the present invention, bare optical fibers and bare optical gratings is pierced into the optical fiber loose tube 2 of 0.9mm, by unsettled in the aluminum pipe 1 of 10cm length for the fiber grating piercing into optical fiber loose tube; Heat sealing machine is utilized optical fiber and fibre-optical splice to be welded; After yellow sheath in the sensor sleeve that welds, evenly apply at Loose tube 2 with 703b glue, finally with heat-shrink tube 3, its pyrocondensation is fixed.
Fig. 3 is the block scheme of the observation circuit of colliery of the present invention fiber grating system, and Fig. 4 is the block scheme of the signal processing circuit of colliery of the present invention fiber grating system.The light signal passed back of fiber-optic grating sensor is through being arranged in the demodulation of the optical fibre interrogation instrument of control center, and the analyzing and processing of machine as calculated, draw the temperature of down-hole point for measuring temperature, fire protection linkage control main frame 21 pairs of relevant temperature take corresponding measure.When being divided into the temperature when down-hole point for measuring temperature to be less than 20 DEG C, think that all are in controllable state, be the 6th grade, fire protection linkage control main frame does not do and reacts; When temperature is between 20 DEG C to 45 DEG C, be level V, even without emergency condition, but delimit viewing area, allow personnel in the pit's primary part observation, in staff's tour work, add the observation for this region simultaneously; When in 10 minutes, temperature is increased beyond 10 DEG C, be the fourth stage, system will launch emergency provision immediately, and down-hole related personnel will ascertain the reason immediately, starts cooling installation simultaneously; When temperature reaches between 45 DEG C to 90 DEG C, for the third level, when not evacuating personnel, start cooling system, now except original spraying cooling system, also in described conduit, inject water, produce huge hydraulic pressure, press the handle of the dry-ice fire extinguisher being placed on conduit mouth, dry ice is sprayed, produce cooling-down effect; When temperature is between 90 DEG C to 300 DEG C, be the second level, immediate evacuation closes on personnel, starts all cooling systems simultaneously, comprises and injects part water; Temperature measure be greater than 300 DEG C time, be the first order, all personnels in the pit of immediate evacuation, inject mud to down-hole, implement all cooling measures.
The present invention, by the restriction of above-mentioned embodiment, change, the modification done, substitutes, combines, simplifies under other any does not deviate from Spirit Essence of the present invention and principle, all should be equivalent substitute mode, is included within protection scope of the present invention.
Claims (2)
1. a colliery fiber grating system, comprises multiple fiber-optic grating sensor, optical fibre interrogation instrument, fiber optic closure, connects optical cable, dry-ice fire extinguisher, the miniature airtight water tank laid at pressure handle place, the conduit laid at water tank place, spraying cooling system, signal processing circuit, photoelectric switching circuit, computing machine, control center, and fire-fighting link main frame, it is characterized in that:
In the region, tunnel, down-hole that there is risk, described fiber-optic grating sensor is laid every the deployment interval of 2.95 meters, point is implemented in the region, non-tunnel that there is risk, lay two identical described fiber-optic grating sensors, each described fiber-optic grating sensor and cloth set up an office and carry out one_to_one corresponding and number and lay, 10 described fiber-optic grating sensors become a fiber-optic grating sensor shallow bid, 9 described shallow bids are become a large stock of fiber-optic grating sensor, 6 large stocks of described fiber-optic grating sensor are become a transmission well and passes control center and fire protection linkage control main frame back, the fiber grating of described fiber-optic grating sensor is subject to strain controlling process, and namely fiber grating position gravitate presents natural torsion shape, then installs photosensitive glue additional at two ends, fiber grating position, irradiates heavy dose of ultraviolet subsequently,
Connecting with connecting optical cable between fiber-optic grating sensor, connecting with fiber optic closure between the large stock of described fiber-optic grating sensor, and being all connected to the optical fibre interrogation instrument being arranged in control center;
Described optical fibre interrogation instrument arranges photoelectric switching circuit, signalization treatment circuit in described computing machine;
Described computer installation in control center, and connects fire protection linkage control main frame;
Described colliery fiber grating system operating mode is as follows:
The data that described in Computer Analysis, optical fiber cable sensor is passed back draw the temperature of down-hole, when the temperature of down-hole point for measuring temperature is less than 20 DEG C, think that all are in controllable state, and fire protection linkage control main frame does not do and reacts; When temperature is between 20 DEG C to 45 DEG C, even without emergency condition, but delimit viewing area, allow personnel in the pit's primary part observation, in staff's tour work, add the observation for this region simultaneously; When in 10 minutes, temperature is increased beyond 10 DEG C, fire protection linkage control main frame launch emergency provision immediately, down-hole related personnel will ascertain the reason immediately, starts cooling installation simultaneously; When temperature reaches between 45 DEG C to 90 DEG C, when not evacuating personnel, start cooling system, now except original spraying cooling system, also in described conduit, inject water, produce huge hydraulic pressure, press the handle of the dry-ice fire extinguisher being placed on conduit mouth, dry ice is sprayed, produces cooling-down effect; When temperature is between 90 DEG C to 300 DEG C, immediate evacuation closes on personnel, starts all cooling systems simultaneously, comprises and injects part water; Temperature measure be greater than 300 DEG C time, all personnels in the pit of immediate evacuation, inject mud to down-hole, implement all cooling measures.
2., for a fiber-optic grating sensor for colliery as claimed in claim 1 fiber grating system, it is characterized in that: method for making is as follows:
(1) bare optical fibers and bare optical gratings is pierced into the optical fiber loose tube of 0.9mm; By unsettled in the aluminum pipe of 10cm length for the fiber grating piercing into optical fiber loose tube;
(2) heat sealing machine is utilized optical fiber and fibre-optical splice to be welded;
(3) by after yellow sheath in the sensor sleeve that welds, evenly apply at Loose tube with 703b glue, finally with heat-shrink tube, its pyrocondensation is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533443.7A CN104236605B (en) | 2014-10-11 | 2014-10-11 | For reducing the colliery fiber grating system in accident rate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533443.7A CN104236605B (en) | 2014-10-11 | 2014-10-11 | For reducing the colliery fiber grating system in accident rate |
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| CN104236605A true CN104236605A (en) | 2014-12-24 |
| CN104236605B CN104236605B (en) | 2016-08-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040113104A1 (en) * | 2002-12-12 | 2004-06-17 | Maida John L | Remotely deployed optical fiber circulator |
| CN103364104A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | System and method for sensing and monitoring temperature of fiber bragg grating in goaf of coal mine coalface |
| CN103528951A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Roadway gas monitoring system based on optical fiber grating sensing technology |
| CN103527248A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Coal mine top plate aquiclude stability monitoring system based on fiber Bragg grating and monitoring method |
| CN203769852U (en) * | 2013-11-21 | 2014-08-13 | 武汉理工大学 | Fiber bragg grating fire monitoring and alarming system for goaf of coal mine |
| CN203809051U (en) * | 2013-09-05 | 2014-09-03 | 上海启鹏工程材料科技有限公司 | Fiber bragg grating based safety monitoring system for mine tunnel |
-
2014
- 2014-10-11 CN CN201410533443.7A patent/CN104236605B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040113104A1 (en) * | 2002-12-12 | 2004-06-17 | Maida John L | Remotely deployed optical fiber circulator |
| CN103364104A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | System and method for sensing and monitoring temperature of fiber bragg grating in goaf of coal mine coalface |
| CN203809051U (en) * | 2013-09-05 | 2014-09-03 | 上海启鹏工程材料科技有限公司 | Fiber bragg grating based safety monitoring system for mine tunnel |
| CN103528951A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Roadway gas monitoring system based on optical fiber grating sensing technology |
| CN103527248A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Coal mine top plate aquiclude stability monitoring system based on fiber Bragg grating and monitoring method |
| CN203769852U (en) * | 2013-11-21 | 2014-08-13 | 武汉理工大学 | Fiber bragg grating fire monitoring and alarming system for goaf of coal mine |
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| CN104236605B (en) | 2016-08-17 |
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