CN204591331U - The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas - Google Patents
The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas Download PDFInfo
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- CN204591331U CN204591331U CN201520287008.0U CN201520287008U CN204591331U CN 204591331 U CN204591331 U CN 204591331U CN 201520287008 U CN201520287008 U CN 201520287008U CN 204591331 U CN204591331 U CN 204591331U
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- digging laneway
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Abstract
The utility model is the mine development end dash system with high-concentration hydrogen sulfide and gas, comprises pressure fan, induced draft fan, ventilated control system.The air outlet of pressure fan is arranged on digging laneway moraine head place, pressure ventilation pipe has first-class gauge.Induced draft fan air intake vent is arranged on digging laneway moraine head place, exhaust column has second gauge.In digging laneway moraine head and return airway, gas-detecting device is set.Ventilated control system comprises control centre, and is connected to compressed-air system, monitoring system, the exhausting system of control centre.Compressed-air system and first-class gauge, the pressure fan amount of connection.Monitoring system is connected with the first gas-detecting device, acoustic-optic alarm.Exhausting system is connected with induced draft fan, second gauge, the second gas-detecting device, waterfog head.The utility model achieves ventilation operation automation, and induced draft fan or pressure fan are opened or closed to ventilation system automatically according to the gas in digging laneway and hydrogen sulfide content, and regulate the operating power of induced draft fan and pressure fan, reaches safe ventilation.
Description
Technical field
The utility model is the ventilation system in the digging laneway of colliery, belongs to winning equipment field.
Background technology
A certain amount of sulphurite can be formed in coal rock layer generative process, these sulphurites some be gas exist (i.e. hydrogen sulfide gas).In " safety regulations in coal mine " regulation mine, pernicious gas hydrogen sulfide maximum permissible concentration is 6.6ppm (being namely less than 0.000066%).When running into fault belt and moisture crack just has gushing water phenomenon, once hydraulic pressure is comparatively large, is difficult to control, gushes out simultaneously with high concentration hydrogen sulfide gas, moment, concentration of hydrogen sulfide was up to 800 ~ more than 2000ppm.Meanwhile, gas is contained in colliery, and gas is mainly derived from coal seam or natural gas deposit.The existence of these gases all brings greater risk to construction, seriously jeopardizes the life security of sinking and drifting personnel.
The hydrogen sulfide of gaseous state and the best smelting reason way of gas are discharged for ventilating.Present ventilation discharge method mainly includes forced ventilation, exhaust ventilation, mixed ventilation.
Forced ventilation: draught capacity is strong, air duct air outlet effective range is large, and the pernicious gases such as the hydrogen sulfide of eliminating driving face and gas are relatively more timely, but hydrogen sulfide is discharged along digging laneway, scope of filling the air is large, the time is long, has harm to the personnel of operation in digging laneway.
Exhaust ventilation: its pluses and minuses are contrary with forced ventilation prevents and treats the more satisfactory method of ventilation of hydrogen sulfide.The method is used widely in the high tunnelling of gushing out of hydrogen sulfide, pull-out type to the larger tunnel weak effect of section some.But the inapplicable high concentration gas of exhaust ventilation, because in exhaust ventilation mode, the gas in digging laneway will be discharged through induced draft fan inside, once induced draft fan explosion-proof performance reduces, prevent electrostatic and the poor performance preventing friction spark, just may cause gas explosion accident.Particularly when induced draft fan shuts down suddenly because of fault, can cause methane accumulation, and exceed the regulation of gas density, so just cannot carry out the firedamp drainage work after blowing-out, the ventilation recovering driving face also just cannot be carried out.So regulation in " safety regulations in coal mine ", coal road, half-coal rock roadway and have the driving of rock gangway of Gas, should adopt forced ventilation mode, must not adopt pull-out type.When gas bearing capacity in digging laneway higher than 1% time, pull-out type must not be used to blow, forced air-supply can only be used.
Mixed ventilation: namely simultaneously adopt forced ventilation and exhaust ventilation, the major defect of compound ventilation is that the overlay segment air quantity of two airducts is less, when excavated section is large, wind speed is less, this is because exhaust column and pressure wind are all blow for the Qi Touchu of digging laneway, the new wind of press-in only directly enters induced draft fan at the moraine head place of digging laneway by rear, and digging laneway center is then without new wind.
From the above, in the digging laneway of coal mining, the ventilating problem be especially attended by the mine development end tunnel of high-concentration hydrogen sulfide and gas is not effectively solved.Meanwhile, it is eventually primary that the safety problem due to mine is cheated, and dash system more should possess and dangerous pernicious gas automatically detected and process automatically, carries out the function of reporting to the police simultaneously.
Utility model content
In order to solve the problem, the utility model provides the mine development end dash system of a kind of adjoint high-concentration hydrogen sulfide and gas.Ventilation system of the present utility model comprises pressure fan 7, induced draft fan 3, ventilated control system.
Described pressure fan is arranged on digging laneway mouth place, and pressure fan is connected with pressure ventilation pipe 11, and pressure ventilation pipe air outlet is arranged on digging laneway 5 moraine head place, and pressure ventilation pipe arranges first-class gauge 8.Described induced draft fan is arranged in return airway 12, and induced draft fan is connected with exhaust column 6, and exhaust column air intake vent is arranged on digging laneway moraine head place, and exhaust column is provided with second gauge 13.Shedder air outlet place in return airway 12 is provided with waterfog head 2.
Acoustic-optic alarm 10 and the first gas-detecting device 9 is provided with at digging laneway moraine head place.The second gas-detecting device 1 is provided with in return airway.
Described ventilated control system comprises for the treatment of information and sends the control centre of instruction, and is connected to compressed-air system, monitoring system, the exhausting system of control centre.
Described compressed-air system is connected with first-class gauge, pressure fan respectively, for controlling the air flow rate of pressure fan.
Described monitoring system is arranged on digging laneway moraine head place, and monitoring system is provided with portable power source, and monitoring system is connected with the first gas-detecting device, acoustic-optic alarm respectively, for monitoring pernicious gas content in digging laneway and providing warning.Monitoring system is connected with compressed-air system.
Described exhausting system is connected with induced draft fan, second gauge, the second gas-detecting device, waterfog head respectively, for controlling the air output of induced draft fan, and according to the pernicious gas content open water fog spray head in return airway.
The mine development end dash system with high-concentration hydrogen sulfide and gas as above, further illustrate into, be at least provided with two pressure fans and two pressure ventilation pipes.
The mine development end dash system with high-concentration hydrogen sulfide and gas as above, further illustrate into, exhaust column air intake vent is arranged on from digging laneway moraine head 4 ~ 5m place, and air intake vent is the adjustable pipe 4 that can freely remove stage makeup and costume, and adjustable pipe 4 grows 4 ~ 6m.
The mine development end dash system with high-concentration hydrogen sulfide and gas as above, further illustrate into, pressure ventilation pipe air outlet is arranged on from digging laneway moraine head 10 ~ 15m place.
The beneficial effects of the utility model are: the utility model achieves ventilation operation automation, induced draft fan or pressure fan are opened or closed to ventilation system of the present utility model automatically according to the gas in digging laneway and hydrogen sulfide content, and regulate the operating power of induced draft fan and pressure fan, to taking the safest and effective ventilation way in digging laneway, namely in the normal tunneling process in tunnel, adopt the method that press-in wind is combined with extraction wind, when hydrogen sulfide content height, adopt and extract wind method out, when gas bearing capacity is more than 1%, automatic closedown induced draft fan, only adopt press-in wind method.
Gas-detecting device is set, automatically detects dangerous harmful gas concentration, and after dangerous pernicious gas transfinites automatic alarm, and allocate method of ventilation.
The utility model adopts two pressure fans, opens a pressure fan and induced draft fan during normal work, presses air quantity to be less than exhausting amount in this case, the wind that induced draft fan will extract in digging laneway, also flows through new wind in the middle part of such digging laneway.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
Pressure fan is arranged on digging laneway outside, and from the place of more than 10 meters, digging laneway mouth, what guarantee sucked is new wind.
At outer setting two pressure fans of digging laneway, be connected to digging laneway moraine head by pressure ventilation pipe, the many 200m of air quantity of every platform pressure fan
3/ min.Induced draft fan is arranged in return airway, and between return airway and digging laneway, installed air door isolation.Induced draft fan air quantity is not less than 400m
3/ min.Namely the press-in air quantity of separate unit pressure fan is about the half that air quantity extracted out by induced draft fan.The air quantity of two pressure fans approximates the extraction air quantity of induced draft fan.
Described pressure fan and induced draft fan all arrange dual power source structure, to ensure the stability of work.
Monitoring system is set to dual power source structure, every day use external power supply, if external power supply goes wrong, monitoring system proceeds to inner portable power source immediately, and sends warning by acoustic-optic alarm.
In the course of the work, monitoring system detects the dangerous pernicious gas content in digging laneway in real time by the first gas-detecting device, when pernicious gas content is in tolerance band, unlatching be a pressure fan, the air quantity of press-in is about 200m
3/ min.Open an induced draft fan, exhausting amount is about 400m
3/ min, like this, exhausting amount is greater than pressure air quantity, fills into induced draft fan by naturally flowing through new wind in digging laneway, so, also flow through new wind in a large number in digging laneway, ensure safety.
First-class gauge and second gauge detect respectively and are pressed into air quantity and extract air quantity out, and by information feed back to control centre, are controlled the operating power of pressure fan and induced draft fan by control centre, use be pressed into air quantity and exhausting flux matched.
Under first checkout gear or second detection device detect in digging laneway the situation of gushing out having a large amount of hydrogen sulfide, in order to ensure construction safety, induced draft fan is opened by control centre immediately peak power, adopt pressure, extract the mode of mixed ventilation out, namely all open two pressure fans and induced draft fan simultaneously, the dirty wind that induced draft fan is extracted out directly enters return airway, and the tunnel of the dirty distinguished and admirable warp of hydrogen sulfide is not filled personnel perhaps and entered.Control centre's open water fog spray head, waterfog head is facing to the reverse spraying of induced draft fan air outlet, and the water smoke of ejection adopts whitewash, farthest hydrogen sulfide harm is reduced.
When the first checkout gear of driving moraine head detects that gas density reaches after 0.8%, acoustooptic alarm system sends warning (comprise alarm center and send warning simultaneously), and from digging laneway, withdraws from workman immediately to safe area.After detecting that in air-flow, gas density reaches or surpasses 1%, exhausting system closes induced draft fan immediately, and by information feed back to control centre, pressure fan power is opened to maximum by control centre, adopts the gas in press-in work exhaust method diluent air.
Exhaust column air intake vent is arranged on from digging laneway moraine head 4 ~ 5m place, unlikelyly when blowing out to tunnel collapse flat exhaust column air intake vent, air intake vent is the adjustable pipe 4 that can freely remove stage makeup and costume, long 4 ~ the 6m of adjustable pipe 4, usually normal use, and ensure that air intake vent is not more than 5m apart from work plane, when blowing out, adjustable pipe 4 is taken, connect again after blowing out.
Digging laneway base plate spills lime.Because the relative density of hydrogen sulfide is 1.19, be heavier than air, so hydrogen sulfide is deposited on the base plate of digging laneway.
Hydrogen sulfide has deep-etching, will do preservative treatment to gas flow through the weight metal material that part is exposed.
Claims (4)
1., with the mine development end dash system of high-concentration hydrogen sulfide and gas, comprise pressure fan (7), induced draft fan (3), ventilated control system;
Described pressure fan is arranged on digging laneway mouth place, and pressure fan is connected with pressure ventilation pipe (11), and pressure ventilation pipe air outlet is arranged on digging laneway (5) Qi Touchu, and pressure ventilation pipe arranges first-class gauge (8); Described induced draft fan is arranged in return airway (12), and induced draft fan is connected with exhaust column (6), and exhaust column air intake vent is arranged on digging laneway moraine head place, and exhaust column is provided with second gauge (13); Shedder air outlet place in return airway (12) is provided with waterfog head (2); Acoustic-optic alarm (10) and the first gas-detecting device (9) is provided with at digging laneway moraine head place; The second gas-detecting device (1) is provided with in return airway;
Described ventilated control system comprises for the treatment of information and sends the control centre of instruction, and is connected to compressed-air system, monitoring system, the exhausting system of control centre;
Described compressed-air system is connected with first-class gauge, pressure fan respectively, for controlling the air flow rate of pressure fan;
Described monitoring system is arranged on digging laneway moraine head place, and monitoring system is provided with portable power source, and monitoring system is connected with the first gas-detecting device, acoustic-optic alarm respectively, for monitoring pernicious gas content in digging laneway and providing warning; Monitoring system is connected with compressed-air system;
Described exhausting system is connected with induced draft fan, second gauge, the second gas-detecting device, waterfog head respectively, for controlling the air output of induced draft fan, and according to the pernicious gas content open water fog spray head in return airway.
2. the mine development end dash system of adjoint high-concentration hydrogen sulfide as claimed in claim 1 and gas, is characterized in that, be at least provided with two pressure fans and two pressure ventilation pipes.
3. the mine development end dash system of adjoint high-concentration hydrogen sulfide as claimed in claim 1 and gas, it is characterized in that, exhaust column air intake vent is arranged on from digging laneway moraine head 4 ~ 5m place, and air intake vent is the adjustable pipe (4) that can freely remove stage makeup and costume, the long 4 ~ 6m of adjustable pipe (4).
4. the mine development end dash system of adjoint high-concentration hydrogen sulfide as claimed in claim 1 and gas, it is characterized in that, pressure ventilation pipe air outlet is arranged on from digging laneway moraine head 10 ~ 15m place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520287008.0U CN204591331U (en) | 2015-05-06 | 2015-05-06 | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520287008.0U CN204591331U (en) | 2015-05-06 | 2015-05-06 | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas |
Publications (1)
| Publication Number | Publication Date |
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| CN204591331U true CN204591331U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520287008.0U Expired - Fee Related CN204591331U (en) | 2015-05-06 | 2015-05-06 | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039966A (en) * | 2016-07-13 | 2016-10-26 | 煤科集团沈阳研究院有限公司 | Coal mine underground machine-mounted type synchronous hydrogen sulfide processing device and method |
| CN106593509A (en) * | 2017-01-20 | 2017-04-26 | 中铁十二局集团第七工程有限公司 | Tunnel negative pressure ventilation system |
| CN107486014A (en) * | 2017-08-31 | 2017-12-19 | 山东科技大学 | Utilize the device and method of the solid catalysis oxidizing process purification distinguished and admirable middle hydrogen sulfide in colliery |
| CN113266412A (en) * | 2021-05-17 | 2021-08-17 | 陕西长武亭南煤业有限责任公司 | Coal mine gas control method |
-
2015
- 2015-05-06 CN CN201520287008.0U patent/CN204591331U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039966A (en) * | 2016-07-13 | 2016-10-26 | 煤科集团沈阳研究院有限公司 | Coal mine underground machine-mounted type synchronous hydrogen sulfide processing device and method |
| CN106039966B (en) * | 2016-07-13 | 2019-01-04 | 煤科集团沈阳研究院有限公司 | Underground coal mine machine-carried type synchronic curing hydrogen processing unit and processing method |
| CN106593509A (en) * | 2017-01-20 | 2017-04-26 | 中铁十二局集团第七工程有限公司 | Tunnel negative pressure ventilation system |
| CN107486014A (en) * | 2017-08-31 | 2017-12-19 | 山东科技大学 | Utilize the device and method of the solid catalysis oxidizing process purification distinguished and admirable middle hydrogen sulfide in colliery |
| CN107486014B (en) * | 2017-08-31 | 2019-04-26 | 山东科技大学 | Utilize the device and method of the solid catalysis oxidizing process purification distinguished and admirable middle hydrogen sulfide of coal mine |
| CN113266412A (en) * | 2021-05-17 | 2021-08-17 | 陕西长武亭南煤业有限责任公司 | Coal mine gas control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160506 |