CN203669918U - Coal mine ventilation air methane collecting device - Google Patents
Coal mine ventilation air methane collecting device Download PDFInfo
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- CN203669918U CN203669918U CN201320798641.7U CN201320798641U CN203669918U CN 203669918 U CN203669918 U CN 203669918U CN 201320798641 U CN201320798641 U CN 201320798641U CN 203669918 U CN203669918 U CN 203669918U
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- wind
- coal mine
- air
- collecting cover
- explosion
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Abstract
The utility model provides a coal mine ventilation air methane collecting device. The coal mine ventilation air methane collecting device comprises an air shaft diffusion tower, an air collecting casing and an anti-explosion cover. The air shaft diffusion tower is of a tube structure which is vertically through, the air collecting casing is a casing body which is vertically through and provided with an upper port and a lower port, the upper portion of the air shaft diffusion tower is covered with the lower port of the air collecting casing, and the lower port of the air collecting casing 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 the upper port of the air collecting casing is covered with the anti-explosion cover. Vent holes are formed in the side wall of the casing body of the air collecting casing, and the internal space of a tube body of the air shaft diffusion tower is communicated with the outside through the vent holes. The coal mine ventilation air methane collecting device can effectively collect and convey coal mine ventilation air methane, and provides gas sources for follow-up utilization of gas in ventilation air methane flow as fuel for boiler combustion supporting and ventilation air methane catalytic oxidation.
Description
Technical field
The utility model relates to a kind of coal mine methane gathering-device, belongs 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.
Utility model content
The purpose of this utility model is to provide a kind of coal mine methane gathering-device, and 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 utility model provides a kind of coal mine methane gathering-device, and 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.
Further, described ventilating shaft retention tower is horn-like tower body, and its upper port is greater than lower port.
Further, 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.
Further, described Explosion-proof cap is provided with air regulator.
Further, 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, and 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.
The coal mine methane gathering-device that the utility model provides, 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 the utility model coal mine methane gathering-device schematic diagram.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment
Fig. 1 is the utility model coal mine methane gathering-device schematic diagram.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 the utility model coal mine methane gathering-device:
Coal mine methane is after the ventilation fan in colliery is extracted ground out, enter ventilating shaft retention tower 6 from the lower port of ventilating shaft retention tower 6 by pipeline, then enter in weary wind gathering-device through ventilating shaft retention tower 6, enter collection wind passage 9 by the gravity vent of wind-collecting cover 5 sidewalls in weary wind gathering-device again, finally enter near the air-introduced machine of coal-burning power plant pithead by pipeline, then sent into by air-introduced machine in the boiler of coal-burning power plant and carry out weary wind utilization.
1, in the time that 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, collected completely by wind-collecting cover 5 from the weary wind of ventilating shaft retention tower 6 upper port diffusions, then enter collection wind transfer passage 9 by the gravity vent of wind-collecting cover 5 sidewalls 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 in the time 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, guarantee that induced draft fan runs well.
2, in the time that coal-burning power plant is less than mine air-lack amount with air quantity, when ventilating shaft retention tower 6 internal pressures exceed 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.
4, in the time 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 the technical solution of the utility model to be described, is not intended to limit; Although the utility model 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 the each embodiment technical scheme of the utility model.
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 any one 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 any one 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 |
|---|---|---|---|
| CN201320798641.7U CN203669918U (en) | 2013-12-06 | 2013-12-06 | Coal mine ventilation air methane collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320798641.7U CN203669918U (en) | 2013-12-06 | 2013-12-06 | Coal mine ventilation air methane collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203669918U true CN203669918U (en) | 2014-06-25 |
Family
ID=50966228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320798641.7U Expired - Fee Related CN203669918U (en) | 2013-12-06 | 2013-12-06 | Coal mine ventilation air methane collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203669918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670494A (en) * | 2013-12-06 | 2014-03-26 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Collection device of coal mine ventilation air methane |
-
2013
- 2013-12-06 CN CN201320798641.7U patent/CN203669918U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670494A (en) * | 2013-12-06 | 2014-03-26 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Collection device of coal mine ventilation air methane |
| CN103670494B (en) * | 2013-12-06 | 2015-11-11 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | A kind of collection device of coal mine ventilation air methane |
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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: 20140625 Termination date: 20161206 |