CN201751536U - Metal framework drainage apparatus suitable for high mash gas coal seam - Google Patents
Metal framework drainage apparatus suitable for high mash gas coal seam Download PDFInfo
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- CN201751536U CN201751536U CN2010202506960U CN201020250696U CN201751536U CN 201751536 U CN201751536 U CN 201751536U CN 2010202506960 U CN2010202506960 U CN 2010202506960U CN 201020250696 U CN201020250696 U CN 201020250696U CN 201751536 U CN201751536 U CN 201751536U
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- extraction
- gas
- drainage
- metal framework
- mash gas
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Abstract
A metal framework drainage apparatus suitable for high mash gas coal seam is characterized in that the apparatus includes a drainage pump, a drainage main pipe, a mash gas concourse box, a drainage hosetube, an one-way valve and a metal framework connected through connecting pieces in sequence; the drainage hosetube is composed of several units, one end of each hosetube is connected with the mash gas concourse box through a drainage joint flange, the other end is combined with corresponding metal framework through the one-way valve; the metal framework has a hollow tubular structure, and several mash gas aspiration holes are arranged on the tube wall uniformly in a circulating manner.
Description
Technical field
The utility model relates to a kind of gas control device of Coal Production industry, relates to be applicable to the metallic framework extraction device of high gas layer specifically.
Background technology
Coal and gas are outstanding to be a kind of extremely complicated dynamic phenomenon, it be under the acting in conjunction of geostatic stress and gas in the extremely short time, dish out or spray a large amount of gas and broken coal to tunnel or stope by coal body, in coal body, form the cavity of special shape, and form certain dynamic effect, can make roadway facility and ventilation system be subjected to heavy damage.In recent years, along with the increase of the depth of excavation, China's coal and gas burst accident significantly increase, and cause great casualties and economic an ancient egg-shaped, holed wind instrument to lose.For example: big lane, west, certain ore deposit+80 levels is positioned at+and 80 levels are around the west side, lane, be arranged in seven ashes, adopt the semicircular arch bolt-spary supports, tunnel with direct bearing 273 degree levels, when tunneling 24 meters, because the rock stratum changes, verify driving face and coal seam normal direction through drilling apart from 10 meters, according to " rules " regulation through verifying work plane the place ahead be one to oblique structure, thick 12 meters of coal, prick 17 degree under the seam inclination, coal body fragmentation, gas bearing capacity height, the tunnel need be passed from the coal seam, if do not take the precautionary measures in advance, it is outstanding with gas that coal takes place easily when stone door punching coal, and perhaps the crossdrift coal seam of opening top, tunnel, back loses the supporter inbreak and causes secondary to give prominence to.
Summary of the invention
The purpose of this utility model provides a kind of rational in infrastructure, metallic framework extraction device that is applicable to high gas layer that gas drainage under suction is effective just at incident soft coal and gas outstanding problem in the pit mining process of the above-mentioned type.
The purpose of this utility model can realize by following measure:
Metallic framework extraction device of the present utility model comprises that the extraction pump, extraction trunk line, the gas that are connected in turn by connector converge case, extraction flexible pipe, one-way cock and metallic framework; Described extraction flexible pipe is formed by many, and the one end converges case by extraction joint flange and gas respectively and is connected, and the other end combines with the corresponding metal skeleton by one-way cock respectively; Described metallic framework is a hollow tubular structure, is processed with several gas SSs around its tube wall in uniform mode.
Operating principle of the present utility model and beneficial effect are as follows:
The utility model is the negative pressure less than atmospheric pressure that is produced by means of the extraction pump, quicken the drawing-off gas in the outburst danger coal seam, after the gas bearing capacity in the coal seam reduces, the coal seam shrinks distortion, improve crossdrift work plane stress collected state, increase the stability in coal seam, everything all destroys or has weakened necessary condition takes place to give prominence to.
In addition, because the metallic framework in the utility model is a kind of rigidity advance timbering, can prevent to open the back because the coal seam has lost supporting body in crossdrift, the a large amount of gas that add in the coal seam absorption outwards gush out pressure, when the shaking force of coal body when gravity and explosion makes original coal body produce loosening (reset condition destruction), play the advance support effect when causing the inbreak of suspension coal seam when balancing of stresses reaches capacity in other words.In the time of working seam, gas in the coal seam is because the suction function that the extraction pump is produced, will enter into metallic framework inside by the aperture on the metallic framework, and enter the extraction flexible pipe from the one-way cock of opening, being drained into the gas that is connected by the extraction joint flange again converges in the case, get back to the extraction pump by converging the extraction trunk line that case 4 links to each other then, thereby reach the purpose of extraction with gas; So circulation meets the coal mining standard until the concentration that reaches gas
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of metallic framework 8.
Sequence number among the figure: the 1st, the extraction pump, the 2nd, the extraction trunk line, the 3rd, adpting flange, the 4th, gas converges case, and the 5th, extraction joint flange, the 6th, extraction flexible pipe, the 7th, one-way cock, the 8th, metallic framework.
The specific embodiment
The utility model is further described below with reference to implementing illustration (accompanying drawing).
As shown in Figure 1, 2, metallic framework extraction device of the present utility model comprises that the extraction pump 1, extraction trunk line 2, the gas that are connected in turn by connector converge case 4, extraction flexible pipe 6, one-way cock 7 and metallic framework 8; Described extraction trunk line 2 converges between the case 4 with gas and combines by adpting flange 3; Described extraction flexible pipe 6 is formed by many, and the one end converges case 4 with gas respectively by extraction joint flange 5 and is connected, and the other end combines with corresponding metal skeleton 8 by one-way cock 7 respectively; Described metallic framework 8 is a hollow tubular structure, is processed with several gas SSs around its tube wall in uniform mode.
More specifically say: the model of the pump of extraction described in the utility model is ZWY40/70, is used for drawing out methane; Described extraction trunk line 2 is the seamless poly-Plastic Steel Pipe of diameter 200mm, thick 6mm, is used for connecting extraction pump 1 and gas and converges case 4; Extraction flexible pipe 6 is the high pressure flexible rubber hose of diameter 10mm, and one terminates at gas converges on the case 4, and one terminates on the one-way cock 7.
Adpting flange described in the utility model 3 is the flange that are complementary with extraction trunk line 2, is fixed on the side that gas converges case 4; One-way cock 7 is general valve, is used for controlling flowing of gas.
Gas described in the utility model converges case 4 and is rectangular shape, adopts the steel plate processing of 18mm to be welded, and is used for storing the gas that is come out by metallic framework 8.
Metallic framework described in the utility model 8 is to be made by the common steel tube of 20mm, is uniform-distribution with the aperture of diameter 6mm above, gas in the coal seam is discharged in the metallic framework 8 is taken away.
Claims (1)
1. metallic framework extraction device that is applicable to high gas layer, it is characterized in that: described device comprises that the extraction pump, extraction trunk line, the gas that are connected in turn by connector converge case, extraction flexible pipe, one-way cock and metallic framework; Described extraction flexible pipe is formed by many, and the one end converges case by extraction joint flange and gas respectively and is connected, and the other end combines with the corresponding metal skeleton by one-way cock respectively; Described metallic framework is a hollow tubular structure, is processed with several gas SSs around its tube wall in uniform mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202506960U CN201751536U (en) | 2010-07-08 | 2010-07-08 | Metal framework drainage apparatus suitable for high mash gas coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202506960U CN201751536U (en) | 2010-07-08 | 2010-07-08 | Metal framework drainage apparatus suitable for high mash gas coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201751536U true CN201751536U (en) | 2011-02-23 |
Family
ID=43601944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202506960U Expired - Fee Related CN201751536U (en) | 2010-07-08 | 2010-07-08 | Metal framework drainage apparatus suitable for high mash gas coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201751536U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334775A (en) * | 2013-05-23 | 2013-10-02 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Gas extraction device for upper corner of coal mining working face and hydraulic bracket |
| CN103899350A (en) * | 2014-04-28 | 2014-07-02 | 河南理工大学 | Fully mechanized caving face supporting top coal gas extraction system |
| CN104806284A (en) * | 2015-03-06 | 2015-07-29 | 河南理工大学 | Intelligent top-cave hydraulic support gas drainage device |
-
2010
- 2010-07-08 CN CN2010202506960U patent/CN201751536U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334775A (en) * | 2013-05-23 | 2013-10-02 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Gas extraction device for upper corner of coal mining working face and hydraulic bracket |
| CN103899350A (en) * | 2014-04-28 | 2014-07-02 | 河南理工大学 | Fully mechanized caving face supporting top coal gas extraction system |
| CN103899350B (en) * | 2014-04-28 | 2016-03-16 | 河南理工大学 | Fully mechanized coal face frame carries top coal gas drainage system |
| CN104806284A (en) * | 2015-03-06 | 2015-07-29 | 河南理工大学 | Intelligent top-cave hydraulic support gas drainage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110223 Termination date: 20110708 |