CN102777406B - Advanced reaction type speed regulation wind quantity control method - Google Patents
Advanced reaction type speed regulation wind quantity control method Download PDFInfo
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- CN102777406B CN102777406B CN201210250437.1A CN201210250437A CN102777406B CN 102777406 B CN102777406 B CN 102777406B CN 201210250437 A CN201210250437 A CN 201210250437A CN 102777406 B CN102777406 B CN 102777406B
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- air quantity
- control method
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000006757 chemical reactions by type Methods 0.000 title abstract 4
- 239000003245 coal Substances 0.000 claims abstract description 7
- 238000009412 basement excavation Methods 0.000 claims description 17
- 238000004880 explosion Methods 0.000 claims description 16
- 238000005422 blasting Methods 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 230000000977 initiatory effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 5
- 230000002045 lasting effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses an advanced reaction type speed regulation wind quantity control method which is applied to a driving face of a coal mine adopting a speed regulation fan. The advanced reaction type speed regulation wind quantity control method comprises the steps that the driving face adopting the speed regulation fan insufficiently and continuously sends fresh air to a working site by adopting a manner of enlarging the rotating speed of a fan before the operation of releasing a large quantity of high-concentration gas, and the high-concentration gas released from the operation is instantly diluted to below a safety line. Due to the adoption of the advanced reaction type speed regulation wind quantity control method, the high-concentration gas released from the operation is instantly diluted to below the safety line, and then the wind quantity is gradually reduced until reaching an optimal working point for ensuring that the gas does not exceed the limit. The gas ultralimit accident is avoided, thus the safety production is ensured and the energy saving effect is remarkable.
Description
Technical field: a kind of antedating response formula regulable speed type air quantity control method that the present invention relates to driving face in coal mine application.
Background technique: driving face in coal mine many employings positive pressure ventilation, during work, blower fan distinguished and admirable lasting is blown into driving face through air duct by fresh, and the high concentration gas concentrating release and tunnel coal body Spontaneous release to go out because of excavation operation is diluted to below guard wire.Past due to technology immature, the wind supply quantity of driving face does not accomplish distribution according to need, blower fan all the period of time full-speed operation, overwhelming majority time supply driving face fresh distinguished and admirable much larger than actual demand, causes a large amount of wastes of electric energy.Along with the progress of technology, the most effective means of Fan Energy-saving--frequency control of motor speed runs and has been introduced into down-hole, it can to follow in driving face gas emission change, increases, subtracts the wind supply quantity of driving face in the mode changing rotation speed of fan, not only ensures safety but also original intention energy-conservation in a large number to reaching.But blower fan is generally arranged in apart from the hundreds of rice of setting even thousands of meters of, and in air duct, wind speed mean value is generally at below 10m/s, i.e. acceleration from blower fan, fresh distinguished and admirablely delivers to operating location to enough, at least wants tens seconds even time of several minutes.
Speed governing operation can significantly reduce blower fan power consumption really, but explosion, cut operation time gas be instantaneous pouring out, must dilute immediately, otherwise gas exceeding limit accident must be caused.What current adjustable speed fan adopted is " gas raises → add Wind Volume ", the technological scheme of " gas reduces → reduce air quantity ", waits systems axiol-ogy to go out gas and exceeds standard, and adds Wind Volume supply, within tens seconds, even just arriving setting after several minutes fresh distinguished and admirable, has been " belated action " worthy of the name.Therefore the speed adjusting technique scheme adopted at present can be tackled on average effectively, gas release slowly, but the instantaneous a large amount of release of the high concentration gas occurred when cannot tackle excavation operation.
Summary of the invention: instant invention overcomes the drawback existed in existing adjustable speed fan operation technique, provide a kind of before a large amount of operation (explosion, cut) discharging high concentration gas starts, by enough, continue fresh distinguished and admirablely send to setting, the high concentration gas discharged in a large number when can dilute operation instantaneously, ensures a kind of antedating response formula regulable speed type air quantity control method that the application of gas exceeding limit accident does not occur.
The technological scheme that the present invention is adopted for achieving the above object is: it adopts the driving face of adjustable speed fan, before the operation of a large amount of release high concentration gas starts, strengthen rotation speed of fan, by enough, continue fresh distinguished and admirablely deliver to operating location, the controlling method that high concentration gas operation discharged is diluted under guard wire is instantaneously:
1. time with blasting method excavation operation, before explosion, hole man sends explosion application to the master controller 8 of antedating response formula regulable speed type air quantity controller, master controller 8 controls blower fan 6 and improves rotating speed, adds Wind Volume supply, after enough, lasting fresh distinguished and admirable arrival setting, air flow sensor 3 beams back arriving signal, initiation control device 10 unlocks, and initiator 9 and explosion cable 5 are connected, and can carry out blasting operation; After explosion, the gas of release is arrived in advance, enough fresh distinguished and admirablely to dilute instantaneously, ensures that gas does not transfinite; Because gas discharges, subtract greatly air quantity demand, master controller 8 can progressively reduce the air quantity of blower fan 6 to ensureing the best operating point that gas does not transfinite according to the data of front firedamp sensor 1 and after gas sensor 2;
2. time with comprehensive pick mode excavation operation, after driver's crawl multi-purpose grubber 13 start button, start sensor 11 sends the signal of multi-purpose grubber 13 startup to master controller 8, and master controller 8 controls blower fan 6 and improves rotating speed, adds Wind Volume supply, after fresh distinguished and admirable arrival setting that is enough, that continue, air flow sensor 3 beams back arriving signal, and remote power-off alarm 12 unlocks, and cutting motor can start, cutting motor drives cutterhead 15 to rotate, and can start excavation operation; Distinguished and admirablely to arrive in advance due to fresh, the gas that cut coal body discharges is diluted instantaneously, ensures that gas does not transfinite; The gas instantaneous relase amount of cut operation is much smaller than blasting operation, and comparatively even, and master controller 8 according to the data of front firedamp sensor 1 and after gas sensor 2, can progressively reduce the air quantity of blower fan 6 to ensureing the best operating point that gas does not transfinite.
The invention has the beneficial effects as follows: owing to have employed antedating response formula regulable speed type air quantity control method, high concentration gas operation discharged is diluted to below guard wire instantaneously, avoid gas exceeding limit accident to occur, solve a difficult problem for the instantaneous a large amount of release of the high concentration gas occurred when existing adjustable speed fan cannot tackle excavation operation, then reduce air quantity gradually to Best Point, both ensure that safety in production, reach again energy-saving effect remarkable.
Accompanying drawing illustrates: Fig. 1 is comprehensive pick tunneling method structural representation of the present invention
Fig. 2 is development blasting mode structural representation of the present invention
Embodiment: embodiment 1: as shown in Figure 1 and Figure 2, it adopts the driving face of adjustable speed fan, before the operation of a large amount of release high concentration gas starts, strengthen rotation speed of fan, by enough, continue fresh distinguished and admirablely deliver to operating location, the controlling method that high concentration gas operation discharged is diluted under guard wire is instantaneously:
1. during blasting method excavation operation, before explosion, hole man sends explosion application to the master controller 8 of antedating response formula regulable speed type air quantity controller, master controller 8 controls blower fan 6 and improves rotating speed, adds Wind Volume supply, after enough, lasting fresh distinguished and admirable arrival setting, air flow sensor 3 beams back arriving signal, initiation control device 10 unlocks, and initiator 9 and explosion cable 5 are connected, and can carry out blasting operation; After explosion, the gas of release is arrived in advance, enough fresh distinguished and admirablely to dilute instantaneously, ensures that gas does not transfinite; Because gas discharges, subtract greatly air quantity demand, master controller 8 can progressively reduce the air quantity of blower fan 6 to ensureing the best operating point that gas does not transfinite according to the data of front firedamp sensor 1 and after gas sensor 2;
2. time with comprehensive pick mode excavation operation, after driver's crawl multi-purpose grubber 13 start button, start sensor 11 sends the signal of multi-purpose grubber 13 startup to master controller 8, and master controller 8 controls blower fan 6 and improves rotating speed, adds Wind Volume supply, after fresh distinguished and admirable arrival setting that is enough, that continue, air flow sensor 3 beams back arriving signal, and remote power-off alarm 12 unlocks, and cutting motor can start, cutting motor drives cutterhead 15 to rotate, and can start excavation operation; Distinguished and admirablely to arrive in advance due to fresh, the gas that cut coal body discharges is diluted instantaneously, ensures that gas does not transfinite; The gas instantaneous relase amount of cut operation is much smaller than blasting operation, and comparatively even, and master controller 8 according to the data of front firedamp sensor 1 and after gas sensor 2, can progressively reduce the air quantity of blower fan 6 to ensureing the best operating point that gas does not transfinite.
Embodiment 2: as shown in Figure 1 and Figure 2, front firedamp sensor 1 and the after gas sensor 2 of described antedating response formula regulable speed type air quantity controller are arranged on upper end, driving face tunnel, and be connected with master controller 8, air flow sensor 3 is arranged on the front top of air duct 4, and be connected with master controller 8, explosion cable 5 is arranged on digging laneway sidewall, and be connected with initiator 9 through initiation control device 10, initiation control device 10 is connected with master controller 8, master controller 8 is connected with blower fan 6 through frequency variator 7, and multi-purpose grubber 13 is arranged in the middle part of excavation operation point tunnel.
Embodiment 3: as shown in Figure 1 and Figure 2, and described multi-purpose grubber 13 front end arranges cutterhead 15, and start sensor 11, remote power-off alarm 12 are arranged on multi-purpose grubber 13, and are connected with master controller 8, and vehicle-mounted gas breaker 14 is arranged on multi-purpose grubber 13.
Embodiment 4: as shown in Figure 1 and Figure 2, and start sensor 11 of the present invention, remote power-off alarm 12 can be arranged on other place, but be preferably disposed on multi-purpose grubber 13.
Embodiment 5: working principle of the present invention is: before the excavation operation that will discharge high concentration gas in a large number starts, by enough, continue fresh distinguished and admirablely deliver to setting, the high concentration gas discharged by excavation operation is diluted to below guard wire instantaneously, avoids gas exceeding limit accident to occur.Then, with the work surface of blasting method driving, master controller, according to the data of firedamp sensor, reduces air quantity gradually to Best Point, reaches not only safety but also energy-conservation target.With the work surface that comprehensive pick mode is tunneled, first must ensure enough, continue fresh distinguished and admirablely deliver to setting in time, then according to the signal of start sensor, master controller differentiates that multi-purpose grubber is in excavation operation carries out or stops operation, for different states, after reserving enough safe clearances with different standards, according to the data of firedamp sensor, reduce air quantity gradually to Best Point, reach not only safety but also energy-conservation target.
Claims (3)
1. an antedating response formula regulable speed type air quantity control method, it is characterized in that its driving face adopting adjustable speed fan, before the operation of a large amount of release high concentration gas starts, strengthen rotation speed of fan, by enough, continue fresh distinguished and admirablely deliver to operating location, the controlling method that high concentration gas operation discharged is diluted under guard wire is instantaneously:
1. time with blasting method excavation operation, before explosion, hole man sends explosion application to the master controller (8) of antedating response formula regulable speed type air quantity controller, master controller (8) controls blower fan (6) and improves rotating speed, add Wind Volume supply, after enough, lasting fresh distinguished and admirable arrival setting, air flow sensor (3) beams back arriving signal, initiation control device (10) unlocks, initiator (9) and explosion cable (5) are connected, and namely carry out blasting operation; After explosion, the gas of release is arrived in advance, enough fresh distinguished and admirablely to dilute instantaneously, ensures that gas does not transfinite; Because gas discharges, subtract greatly air quantity demand, master controller (8) progressively reduces the air quantity of blower fan (6) to ensureing the best operating point that gas does not transfinite according to the data of front firedamp sensor (1) and after gas sensor (2);
2. time with comprehensive pick mode excavation operation, after driver's crawl multi-purpose grubber (13) start button, start sensor (11) sends to master controller (8) signal that multi-purpose grubber (13) starts, master controller (8) controls blower fan (6) and improves rotating speed, add Wind Volume supply, after fresh distinguished and admirable arrival setting that is enough, that continue, air flow sensor (3) beams back arriving signal, remote power-off alarm (12) unlocks, cutting motor can start, cutting motor drives cutterhead (15) to rotate, and namely starts excavation operation; Distinguished and admirablely to arrive in advance due to fresh, the gas that cut coal body discharges is diluted instantaneously, ensures that gas does not transfinite; The gas instantaneous relase amount of cut operation is much smaller than blasting operation, and it is comparatively even, master controller (8), according to the data of front firedamp sensor (1) and after gas sensor (2), progressively reduces the air quantity of blower fan (6) to ensureing the best operating point that gas does not transfinite.
2. a kind of antedating response formula regulable speed type air quantity control method according to claim 1, it is characterized in that front firedamp sensor (1) and the after gas sensor (2) of described antedating response formula regulable speed type air quantity controller are arranged on upper end, driving face tunnel, and be connected with master controller (8), air flow sensor (3) is arranged on air duct (4) front top, and be connected with master controller (8), explosion cable (5) is arranged on digging laneway sidewall, and be connected with initiator (9) through initiation control device (10), initiation control device (10) is connected with master controller (8), master controller (8) is connected with blower fan (6) through frequency variator (7), multi-purpose grubber (13) is arranged in the middle part of excavation operation point tunnel.
3. a kind of antedating response formula regulable speed type air quantity control method according to claim 2, it is characterized in that described multi-purpose grubber (13) front end arranges cutterhead (15), start sensor (11), remote power-off alarm (12) are arranged on multi-purpose grubber (13), and be connected with master controller (8), vehicle-mounted gas breaker (14) is arranged on multi-purpose grubber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210250437.1A CN102777406B (en) | 2012-07-10 | 2012-07-10 | Advanced reaction type speed regulation wind quantity control method |
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| CN201210250437.1A CN102777406B (en) | 2012-07-10 | 2012-07-10 | Advanced reaction type speed regulation wind quantity control method |
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| CN102777406A CN102777406A (en) | 2012-11-14 |
| CN102777406B true CN102777406B (en) | 2015-04-01 |
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| CN201210250437.1A Active CN102777406B (en) | 2012-07-10 | 2012-07-10 | Advanced reaction type speed regulation wind quantity control method |
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| CN110439616B (en) * | 2019-07-29 | 2020-12-01 | 宿州市金鼎安全技术股份有限公司 | Mining optical fiber gas monitoring and conversion device |
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| CN2086333U (en) * | 1991-04-03 | 1991-10-09 | 王卫东 | Wind electric locking device of mine part fan |
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Inventor after: Hu Weilin Inventor after: Hu Enhan Inventor after: Guo Xuegong Inventor before: Hu Weilin Inventor before: Hu Wenhan |
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