CN103670494A - Collection device of coal mine ventilation air methane - Google Patents
Collection device of coal mine ventilation air methane Download PDFInfo
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- CN103670494A CN103670494A CN201310653957.1A CN201310653957A CN103670494A CN 103670494 A CN103670494 A CN 103670494A CN 201310653957 A CN201310653957 A CN 201310653957A CN 103670494 A CN103670494 A CN 103670494A
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Abstract
The invention provides a collection device of coal mine ventilation air methane. The collection device of the coal mine ventilation air methane comprises an air shaft diffusion tower, a wind collecting cover and an anti-explosion cover. The air shaft diffusion tower is of a tube body structure which is communicated from top to bottom. The wind collecting cover is a cover body which is communicated from top to bottom, the wind collecting cover is provided with an upper end opening and a lower end opening, and the lower end opening of the wind collecting cover covers the upper portion of the air shaft diffusion tower and is fixedly connected to the outside of the side wall of the air shaft diffusion tower. The anti-explosion cover is a cover body and covers the upper end opening of the wind collecting cover, a ventilation hole is formed in the side wall of the cover body of the wind collecting cover, and internal space of the tube body of the air shaft diffusion tower is communicated with the outside through the ventilation hole. By means of the device, the coal mine ventilation air methane can be effectively collected and conveyed, and a gas source is provided for follow-up use, for instance, gas in ventilation air methane flow is used as fuel for combustion-supporting and catalytic oxidation of a boiler and the ventilation air methane.
Description
Technical field
The present invention relates to a kind of coal mine methane gathering-device, belong to field of coal mining.
Background technology
In progress of coal mining, in coal seam, compose a large amount of gas of depositing and be rushed to digging space, adopting mine ventilation to get rid of mine gas is one of basic means of gas control.In order to improve the safety of coal production, a large amount of gas is discharged in atmosphere with method of Mine Ventilation well head ventilation fan, the direct discharge of this coal mine wind-lack gas has caused the huge waste of non-renewable resources on the one hand, has also aggravated on the other hand atmosphere pollution and greenhouse effect.
Coal resources in China is compared with horn of plenty, but most colliery belongs to high fiery colliery, and coal-bed gas gas permeability is poor.At present, mine gas extraction utilization rate is lower, and most gas is drained in atmosphere by mine ventilation mode, and the gas bearing capacity in quite a few mine air-lack stream is 0.5%～0.75%, and some content even can reach 1%.
Device in Gas is directly discharged the waste that causes available resources.On the one hand, coal-fired boiler in power plant need to consume large quantity of air, introduces mine and participates in burning containing the weary wind of gas, because gas very easily burns, will be conducive to improve coal burning performance, and gas combustion also produces amount of heat, saved coal-fired in, also reduced the gas amount to atmosphere discharge.On the other hand, if the device in Gas of discharging with mine air-lack is collected and carried out the processing such as catalytic oxidation, also can realize resource recycling.Therefore, how effectively coal mine methane to be collected, for the later use of weary distinguished and admirable middle gas seems particularly important.
Summary of the invention
The object of the present invention is to provide a kind of coal mine methane gathering-device, this device can effectively be collected coal mine methane, for weary distinguished and admirable middle gas provides source of the gas as later uses such as fuel combustion supporting boiler and weary wind catalytic oxidations.
The invention provides a kind of coal mine methane gathering-device, this weary wind gathering-device comprises:
Ventilating shaft retention tower, the tubular construction that described ventilating shaft retention tower is upper and lower conducting;
Wind-collecting cover, the cover body that described wind-collecting cover is upper and lower conducting, and be provided with upper port and lower port, the lower port of described wind-collecting cover covers at the top of described ventilating shaft retention tower and is fixed in outside the sidewall of described ventilating shaft retention tower;
Explosion-proof cap, described Explosion-proof cap is a lid, is covered on the upper port of described wind-collecting cover;
Wherein, the faceshield side wall of described wind-collecting cover offers gravity vent, and the inner barrel space of described ventilating shaft retention tower is by this gravity vent and outside conducting.
In the specific embodiment of the present invention, described ventilating shaft retention tower is horn-like tower body, and its upper port is greater than lower port.This upper port is greater than the ventilating shaft retention tower of lower port, is more conducive to diffusion and the transmission of weary wind.
In the specific embodiment of the present invention, for more effectively, easily described Explosion-proof cap is covered on to the upper port of described wind-collecting cover, can offer groove in the opposing sidewalls of the cover body upper port of described wind-collecting cover, and extend to form slideway along straight direction; Described Explosion-proof cap has the lid ora terminalis that can match with described groove, and this lid ora terminalis is provided with the pulley structure that can slide along described slideway.
In the specific embodiment of the present invention, on described Explosion-proof cap, can also be provided with air regulator, when the pressure of weary wind is lower than atmospheric pressure outside tower in ventilating shaft retention tower, open air regulator, cover the inside and outside pressure reduction of eliminating atmosphere ventilating shaft retention tower, thereby guarantee the normal operation of induced draft fan.
In the specific embodiment of the present invention, the outside of described wind-collecting cover is also provided with pressure balance mechanism, and described pressure balance mechanism comprises rope sheave frame, cotton rope and weight, wherein, one end bolt of described cotton rope has weight, and the other end is connected with described Explosion-proof cap by rope sheave frame.When the pressure in ventilating shaft retention tower is greater than the atmospheric pressure outside tower, Explosion-proof cap is under the acting in conjunction of weary wind pressure and weight pulling force, Explosion-proof cap levitates, the weary wind of part in ventilating shaft retention tower is discharged in atmosphere by gap, can effectively reduce the pressure in ventilating shaft retention tower, guarantee the normal operation of induced draft fan.
Coal mine methane gathering-device provided by the invention, can effectively collect coal mine methane, for weary distinguished and admirable middle gas provides source of the gas as later uses such as fuel combustion supporting boiler and weary wind catalytic oxidations.
Accompanying drawing explanation
Fig. 1 is coal mine methane gathering-device schematic diagram of the present invention.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment
Fig. 1 is coal mine methane gathering-device schematic diagram of the present invention.This weary wind gathering-device comprises: Explosion-proof cap 1, rope sheave frame 2, weight 3, movable pulley 4, wind-collecting cover 5, ventilating shaft retention tower 6, air regulator 7 and slideway 8, collection wind transfer passage 9.
The cover body that described wind-collecting cover 5 is upper and lower conducting, and be provided with upper port and lower port, the lower port of described wind-collecting cover 5 covers at the top of described ventilating shaft retention tower 6 and is fixed in outside the sidewall of described ventilating shaft retention tower 6; Wherein, described ventilating shaft retention tower 6 is horn-like tower body, and its upper port is greater than lower port.
The opposing sidewalls of the cover body upper port of described wind-collecting cover 5 offers groove, and extends to form slideway 8 along straight direction; Described Explosion-proof cap 1 has the lid ora terminalis that can match with described groove, and this lid ora terminalis is provided with the movable pulley 4 that can slide along described slideway 8; Described Explosion-proof cap 1 is by described movable pulley 4 and the relative sliding realization of described slideway 8 and the folding of described wind-collecting cover 5.
The faceshield side wall of described wind-collecting cover 5 offers gravity vent (not shown), and the inner barrel space of described ventilating shaft retention tower 6 is by this gravity vent and 9 conductings of collection wind transfer passage.
On described Explosion-proof cap 1, be also provided with air regulator 7, when the pressure of ventilating shaft retention tower 6 interior weary wind is during lower than atmospheric pressure outside tower, open air regulator 7, cover the inside and outside pressure reduction of eliminating atmosphere ventilating shaft retention tower 6, thereby guarantee the normal operation of induced draft fan.
Outside at described wind-collecting cover 5 is also provided with pressure balance mechanism, and described pressure balance mechanism comprises rope sheave frame 2, cotton rope and weight 3, and wherein, one end bolt of described cotton rope has weight 3, and the other end is connected with described Explosion-proof cap 1 by rope sheave frame 2.
The operating principle of coal mine methane gathering-device of the present invention:
Coal mine methane is after the ventilation fan in colliery is extracted ground out, by pipeline, from the lower port of ventilating shaft retention tower 6, enter ventilating shaft retention tower 6, then through ventilating shaft retention tower 6, enter in weary wind gathering-device, gravity vent by wind-collecting cover 5 sidewalls in weary wind gathering-device enters collection wind passage 9 again, finally by pipeline, enter near the air-introduced machine of coal-burning power plant pithead, then in the boiler of sending into coal-burning power plant by air-introduced machine, carry out weary wind utilization.
1, when coal-burning power plant is greater than mine air-lack amount with air quantity, ventilating shaft retention tower 6 internal pressures are opened setup pressure value lower than Explosion-proof cap 1, when being greater than air regulator 7 and closing setup pressure value, Explosion-proof cap 1 is under the effect of deadweight, be slipped to the upper port that slideway 8 bottoms cover wind-collecting cover 5, now, from the weary wind of ventilating shaft retention tower 6 upper port diffusions, by wind-collecting cover 5, is collected completely, then the gravity vent by wind-collecting cover 5 sidewalls enters and collects wind transfer passage 9 and transfer out;
If coal-burning power plant continues to increase with air quantity, ventilating shaft retention tower 6 internal pressures continue to reduce, and when closing setup pressure value lower than air regulator 7, the air regulator 7 on Explosion-proof cap 1 is opened, and in wind-collecting cover 5, fills into eliminating atmosphere inside and outside differential pressure, guarantees that induced draft fan runs well.
2, when coal-burning power plant is less than mine air-lack amount with air quantity, when ventilating shaft retention tower 6 internal pressures surpass setup pressure value, Explosion-proof cap 1 is under weary wind pressure and weight 3 pulling force actings in conjunction, Explosion-proof cap 1 levitates, the weary wind of redundance enters in atmosphere by wind-collecting cover 5 and the cover rim gap of Explosion-proof cap 1, weary wind pressure in wind-collecting cover 5 declines until normal value now can guarantee coal-burning power plant's air quantity, can guarantee that again induced draft fan runs well.
3, when coal-burning power plant is because failure and other reasons is shut down suddenly, cause when coal mine methane gathers, the interior weary wind pressure of ventilating shaft retention tower 6 raises, Explosion-proof cap 1 can be risen to extreme higher position, coal mine methane enters atmosphere completely, guarantees that induced draft fan runs well.
While 4, there is gas explosion under coal mine, Explosion-proof cap 1 is washed in blast open, can play venting of dust explosion function, prevents that gas explosion accident shock wave, flame etc. from propagating into coal-burning power plant along weary wind collection transfer passage 9, and expansion causes the accident.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. a coal mine methane gathering-device, is characterized in that, this weary wind gathering-device comprises:
Ventilating shaft retention tower, the tubular construction that described ventilating shaft retention tower is upper and lower conducting;
Wind-collecting cover, the cover body that described wind-collecting cover is upper and lower conducting, and be provided with upper port and lower port, the lower port of described wind-collecting cover covers at the top of described ventilating shaft retention tower and is fixed in outside the sidewall of described ventilating shaft retention tower;
Explosion-proof cap, described Explosion-proof cap is a lid, is covered on the upper port of described wind-collecting cover;
Wherein, the faceshield side wall of described wind-collecting cover offers gravity vent, and the inner barrel space of described ventilating shaft retention tower is by this gravity vent and outside conducting.
2. coal mine methane gathering-device according to claim 1, is characterized in that, described ventilating shaft retention tower is horn-like tower body, and its upper port is greater than lower port.
3. coal mine methane gathering-device according to claim 1, is characterized in that, offers groove, and extend to form slideway along straight direction in the opposing sidewalls of the cover body upper port of described wind-collecting cover;
Described Explosion-proof cap has the lid ora terminalis that can match with described groove, and this lid ora terminalis is provided with the pulley structure that can slide along described slideway.
4. according to the coal mine methane gathering-device described in claim 1-3, it is characterized in that, described Explosion-proof cap is provided with air regulator.
5. according to the coal mine methane gathering-device described in claim 1-3, it is characterized in that, the outside of described wind-collecting cover is also provided with pressure balance mechanism, described pressure balance mechanism comprises rope sheave frame, cotton rope and weight, wherein, one end bolt of described cotton rope has weight, and the other end is connected with described Explosion-proof cap by rope sheave frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653957.1A CN103670494B (en) | 2013-12-06 | 2013-12-06 | A kind of collection device of coal mine ventilation air methane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653957.1A CN103670494B (en) | 2013-12-06 | 2013-12-06 | A kind of collection device of coal mine ventilation air methane |
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| CN103670494A true CN103670494A (en) | 2014-03-26 |
| CN103670494B CN103670494B (en) | 2015-11-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070231233A1 (en) * | 2006-03-31 | 2007-10-04 | Ranendra Bose | Methane gas recovery and usage system for coalmines, municipal land fills and oil refinery distillation tower vent stacks |
| CN101955403A (en) * | 2010-04-27 | 2011-01-26 | 山东科技大学 | Technology and equipment for separating, enriching and recycling methane in mine return air stream |
| CN202055865U (en) * | 2011-05-30 | 2011-11-30 | 湖南科技大学 | Safety air bag automatic plugging device of mine anti-explosion well cover |
| CN102486094A (en) * | 2010-12-01 | 2012-06-06 | 姚贵英 | Dry-type side-by-side explosion-proof cover |
| CN202810888U (en) * | 2012-08-06 | 2013-03-20 | 煤炭工业太原设计研究院 | Mine ventilation air methane collecting device |
| CN203669918U (en) * | 2013-12-06 | 2014-06-25 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Coal mine ventilation air methane collecting device |
-
2013
- 2013-12-06 CN CN201310653957.1A patent/CN103670494B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070231233A1 (en) * | 2006-03-31 | 2007-10-04 | Ranendra Bose | Methane gas recovery and usage system for coalmines, municipal land fills and oil refinery distillation tower vent stacks |
| CN101955403A (en) * | 2010-04-27 | 2011-01-26 | 山东科技大学 | Technology and equipment for separating, enriching and recycling methane in mine return air stream |
| CN102486094A (en) * | 2010-12-01 | 2012-06-06 | 姚贵英 | Dry-type side-by-side explosion-proof cover |
| CN202055865U (en) * | 2011-05-30 | 2011-11-30 | 湖南科技大学 | Safety air bag automatic plugging device of mine anti-explosion well cover |
| CN202810888U (en) * | 2012-08-06 | 2013-03-20 | 煤炭工业太原设计研究院 | Mine ventilation air methane collecting device |
| CN203669918U (en) * | 2013-12-06 | 2014-06-25 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Coal mine ventilation air methane collecting device |
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| CN103670494B (en) | 2015-11-11 |
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