CN104100291A - Gob gas extraction device and method - Google Patents
Gob gas extraction device and method Download PDFInfo
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- CN104100291A CN104100291A CN201410357947.8A CN201410357947A CN104100291A CN 104100291 A CN104100291 A CN 104100291A CN 201410357947 A CN201410357947 A CN 201410357947A CN 104100291 A CN104100291 A CN 104100291A
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- rotating shaft
- positive stop
- stop spring
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Abstract
The invention specifically provides a gob gas extraction device and method, and aims at solving the problems of large consumption on pipes, increase on cost, complex mounting, and easy damaging of the existing gob extraction technique. The gob gas extraction device comprises a tee joint; one end of the tee joint is connected with a main pipe switch and while the other end of the tee joint is connected with a branch pipe switch; the main pipe switch comprises a flange shaped housing; a reversed U-shaped supporting rod is fixed to the convex end of the housing; a rubber ring is fixed in the housing; a rotating shaft and a non-return spring sheet are fixed inside the housing; the limiting spring sheet is fixed to the U-shaped supporting rod; a rotating fan blade is hinged to the rotating shaft; the branch pipe switch comprises a flange shaped housing I; a reversed U-shaped supporting rod I is fixed to the convex end of the housing I; a rubber ring I is fixed in the housing I; a rotating shaft I and a limiting spring sheet I are fixed inside the housing I; a non-return spring sheet I is fixed to the U-shaped supporting rod I; a rotating fan blade I is hinged to the rotating shaft I. With the adoption of the gob gas extraction device and method, the control to the gas extraction in different gob areas is realized.
Description
Technical field
The present invention relates to coal mine gas extraction control technology, be specially while being applicable to work plane goaf pipe laying mash gas extraction, a kind of goaf gas extraction control device and method that zones of different need be treated with a certain discrimination.
Background technology
Mine gas is the important threat of safety of coal mines, and wherein the gas from goaf is an important sources of stope gas.
At present, mine has been used the method for work plane goaf pipe laying mash gas extraction mostly, it is the preset gas pumping main of return airway at work plane, and the arm of a series of determining deviations stretches to goaf from main, by the negative pressure in pipeline, the gas in goaf is passed through to arm suction main.
According to pipe laying mash gas extraction effect, goaf can be divided into three parts, first is within the scope of work plane 0-30 rice, and something lost coal and the spoil in this part of goaf be loose, it is large to leak out, and gas density is low, and extracting result is poor; Second portion is within the scope of work plane 30-60 rice, and this part is lost coal and the more abundant compacting of spoil, and gas density is large, is emphasis extraction part; Third part is beyond 60 meters of scopes of work plane, and this part of gas is little on the distinguished and admirable gas density impact in down-hole, and in the coal seam that has spontaneous combustion tendency, due to the extraction of gas, also entering of fresh air can impel spontaneous combustion in goaf.Different mines, above-mentioned data can be different, and the concrete region in goaf is divided, and can determine by on-the-spot reality.The gas pumping of three parts in goaf needs to be treated differently, because if first and other parts are not distinguished and are treated, within the scope of the first of gas pumping Guan goaf, can only be extracted into the air of low concentration gas, because its flow is larger, make negative pressure in gas pumping pipe be difficult to reach requirement; In order to prevent spontaneous combustion, third part is unsuitable mash gas extraction also.
For tackling this situation, some places have adopted and to goaf, have laid the method for extraction pipeline twice, to control the part of goaf gas extraction, make to make in this way tubing consumption, labour cost be multiplied; Some places are used single tube, but need to adopt remotely-controlled electric control valve, and this valve cost is high, trouble is installed, easily damages.
Summary of the invention
The present invention exists in order to solve existing goaf extraction technology that tubing consumption is large, expense increases and loaded down with trivial details, flimsy problem is installed, and a kind of goaf gas extraction control device and method are provided.
The present invention adopts following technical scheme to realize: a kind of goaf gas extraction control device, comprise the tee junction that one end is communicated with gas pumping main afterbody, the other end that tee junction is relative with gas pumping pipeline is connected with main switch, and the 3rd end of tee junction is connected with arm switch;
Main switch comprises flange-like housing, the protruding end of housing is fixed with inverted U-shaped strut, on the face of cylinder of housing inner side, be fixed with rubber ring, the housing inner side of rubber ring top is fixed with two non-return shell fragments of rotating shaft and position symmetry, U-shaped strut left and right sides lower wall is fixed with two positive stop spring plates of position symmetry, is hinged with two semicircle shapes that coordinate with non-return shell fragment and positive stop spring plate and rotates fan sheet in rotating shaft;
Arm switch comprises flange-like housing I, the protruding end of housing I is fixed with inverted U-shaped strut I, on the face of cylinder of housing I inner side, be fixed with rubber ring I, the housing I inner side of rubber ring I top is fixed with two positive stop spring plate I of rotating shaft I and position symmetry, U-shaped strut I left and right sides lower wall is fixed with two non-return shell fragment I of position symmetry, is hinged with two semicircle shapes that coordinate with non-return shell fragment I and positive stop spring plate I and rotates fan sheet I on rotating shaft I.
During installation, the protruding end of main switch is connected with tee junction one end, the bottom of arm switch is connected with tee junction the 3rd end, rubber ring carries out spacing to rotating fan sheet, and seal, by non-return shell fragment, positive stop spring plate, rotation fan sheet and non-return shell fragment I, positive stop spring plate I, rotation fan sheet I, control unlatching, the closure of main switch and arm switch, and then the extraction of goaf different piece is controlled, overcome existing goaf extraction technology and had that tubing consumption is large, expense increases and loaded down with trivial details, flimsy problem is installed.
A kind of control method of goaf gas extraction control device, adopt following steps: a, when rigidly connecting into gas pumping main, the rotation of main switch fan sheet is stuck on positive stop spring plate, in open mode, it is upper that the rotation fan sheet I of arm switch is stuck in positive stop spring plate I, in closed condition; B, along with the propelling of work plane, tee junction gos deep into after the certain distance of goaf, with down-hole compressed air, at gas pumping main, provide air pulse, air pressure drives rotation fan sheet to turn in non-return shell fragment, in closed condition, air pressure drives rotation fan sheet I to turn in non-return shell fragment I, in open mode, then next tee junction, main switch and arm switch are installed in work plane position, and gas pumping main recovers negative pressure; C, circulation extraction to the advance of the face complete.
The present invention realizes the control to goaf zones of different gas pumping by tee junction, main switch and arm switch being installed at mash gas extraction main, do not increase the consumption of tubing, financial cost is lower, and installation process is convenient and reliable, have advantages of simple in structure, easy to process and cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of main switch in Fig. 1;
Fig. 3 is the structural representation of arm switch in Fig. 1.
In figure: 1-tee junction, 2-main switch, 3-arm switch, 4-housing, 5-U type strut, 6-rubber ring, 7-rotating shaft, 8-non-return shell fragment, 9-positive stop spring plate, 10-rotates fan sheet, 11-housing I, 12-U type strut I, 13-rubber ring I, 14-rotating shaft I, 15-positive stop spring plate I, 16-non-return shell fragment I, 17-rotates fan sheet I.
The specific embodiment
A goaf gas extraction control device, comprises the tee junction 1 that one end is communicated with gas pumping main afterbody, and the other end that tee junction 1 is relative with gas pumping pipeline is connected with main switch 2, and the 3rd end of tee junction 1 is connected with arm switch 3;
Main switch 2 comprises flange-like housing 4, the protruding end of housing 4 is fixed with inverted U-shaped strut 5, on the face of cylinder of housing 4 inner sides, be fixed with rubber ring 6, housing 4 inner sides of rubber ring 6 tops are fixed with two non-return shell fragments 8 of rotating shaft 7 and position symmetry, U-shaped strut 5 left and right sides lower walls are fixed with two positive stop spring plates 9 of position symmetry, be hinged with two semicircle shapes that coordinate with non-return shell fragment 8 and positive stop spring plate 9 and rotate fan sheet 10 in rotating shaft 7;
Arm switch 3 comprises flange-like housing I11, the protruding end of housing I11 is fixed with inverted U-shaped strut I12, on the face of cylinder of housing I11 inner side, be fixed with rubber ring I13, the housing I11 inner side of rubber ring I13 top is fixed with two positive stop spring plate I15 of rotating shaft I14 and position symmetry, U-shaped strut I12 left and right sides lower wall is fixed with two non-return shell fragment I16 of position symmetry, is hinged with two semicircle shapes that coordinate with non-return shell fragment I16 and positive stop spring plate I15 and rotates fan sheet I17 on rotating shaft I14.
A kind of control method of goaf gas extraction control device, adopt following steps: a, when rigidly connecting into gas pumping main, the rotation fan sheet 10 of main switch 2 is stuck on positive stop spring plate 9, in open mode, it is upper that the rotation fan sheet I17 of arm switch 3 is stuck in positive stop spring plate I15, in closed condition; B, along with the propelling of work plane, tee junction 1 gos deep into after the certain distance of goaf, with down-hole compressed air, at gas pumping main, provide air pulse, air pressure drives rotation fan sheet 10 to turn in non-return shell fragment 8, in closed condition, air pressure drives rotation fan sheet I17 to turn in non-return shell fragment I16, in open mode, then next tee junction 1, main switch 2 and arm switch 3 are installed in work plane position, and gas pumping main recovers negative pressure; C, circulation extraction to the advance of the face complete.
Claims (2)
1. a goaf gas extraction control device, it is characterized in that: comprise the tee junction (1) that one end is communicated with gas pumping main afterbody, the other end that tee junction (1) is relative with gas pumping pipeline is connected with main switch (2), and the 3rd end of tee junction (1) is connected with arm switch (3);
Main switch (2) comprises flange-like housing (4), the protruding end of housing (4) is fixed with inverted U-shaped strut (5), on the face of cylinder of housing (4) inner side, be fixed with rubber ring (6), housing (4) inner side of rubber ring (6) top is fixed with two non-return shell fragments (8) of rotating shaft (7) and position symmetry, U-shaped strut (5) left and right sides lower wall is fixed with two positive stop spring plates (9) of position symmetry, is hinged with two semicircle shapes that coordinate with non-return shell fragment (8) and positive stop spring plate (9) and rotates fan sheet (10) in rotating shaft (7);
Arm switch (3) comprises flange-like housing I(11), housing I(11) protruding end is fixed with inverted U-shaped strut I(12), housing I(11) on the face of cylinder of inner side, be fixed with rubber ring I(13), rubber ring I(13) the housing I(11 of top) inner side is fixed with rotating shaft I(14) and two positive stop spring plate I(15 of position symmetry), U-shaped strut I(12) left and right sides lower wall is fixed with two non-return shell fragment I(16 of position symmetry), rotating shaft I(14) on, be hinged with two with non-return shell fragment I(16) and positive stop spring plate I(15) semicircle shape that coordinates rotates fan sheet I(17).
2. the control method of a kind of goaf gas extraction control device according to claim 1, it is characterized in that: adopt following steps: a, when rigidly connecting into gas pumping main, the rotation fan sheet (10) of main switch (2) is stuck on positive stop spring plate (9), in open mode, the rotation fan sheet I(17 of arm switch (3)) be stuck in positive stop spring plate I(15) upper, in closed condition; B, along with the propelling of work plane, tee junction (1) gos deep into after the certain distance of goaf, with down-hole compressed air, at gas pumping main, provide air pulse, air pressure drives rotation fan sheet (10) to turn in non-return shell fragment (8), in closed condition, air pressure driving rotation fan sheet I(17) turn to non-return shell fragment I(16) in, in open mode, next tee junction (1), main switch (2) and arm switch (3) are then installed in work plane position, and gas pumping main recovers negative pressure; C, circulation extraction to the advance of the face complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357947.8A CN104100291B (en) | 2014-07-25 | 2014-07-25 | A kind of goaf gas extraction control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357947.8A CN104100291B (en) | 2014-07-25 | 2014-07-25 | A kind of goaf gas extraction control method |
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| CN104100291A true CN104100291A (en) | 2014-10-15 |
| CN104100291B CN104100291B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410357947.8A Active CN104100291B (en) | 2014-07-25 | 2014-07-25 | A kind of goaf gas extraction control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943347A (en) * | 2021-03-17 | 2021-06-11 | 太原理工大学 | Multi-source gas efficient pre-extraction rapid outburst elimination method in middle-layer residual coal re-mining tunneling process |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
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| CN101029574A (en) * | 2007-04-02 | 2007-09-05 | 淮北矿业集团煤业有限责任公司祁南煤矿 | Long standpipe gas extraction in worked-out section |
| CN201386569Y (en) * | 2009-04-14 | 2010-01-20 | 贵州大宏禹管业制造有限公司 | Gas drainage device |
| CN201554492U (en) * | 2009-12-12 | 2010-08-18 | 山西晋城无烟煤矿业集团有限责任公司 | Gas drainage branch-pipe connected component |
| CN202252116U (en) * | 2011-10-12 | 2012-05-30 | 铁法煤业（集团）有限责任公司大明煤矿 | Stope face gob gas drainage pipe laying three-way valve |
| CN202745919U (en) * | 2012-06-18 | 2013-02-20 | 淮南矿业(集团)有限责任公司 | Backward crossing shield type drainage system for mining face upper corner |
| CN103046947A (en) * | 2011-10-14 | 2013-04-17 | 中国矿业大学(北京) | Gas extraction method by using major diameter pipeline and sealing transverses between mine goaf and tail roadway |
-
2014
- 2014-07-25 CN CN201410357947.8A patent/CN104100291B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029574A (en) * | 2007-04-02 | 2007-09-05 | 淮北矿业集团煤业有限责任公司祁南煤矿 | Long standpipe gas extraction in worked-out section |
| CN201386569Y (en) * | 2009-04-14 | 2010-01-20 | 贵州大宏禹管业制造有限公司 | Gas drainage device |
| CN201554492U (en) * | 2009-12-12 | 2010-08-18 | 山西晋城无烟煤矿业集团有限责任公司 | Gas drainage branch-pipe connected component |
| CN202252116U (en) * | 2011-10-12 | 2012-05-30 | 铁法煤业（集团）有限责任公司大明煤矿 | Stope face gob gas drainage pipe laying three-way valve |
| CN103046947A (en) * | 2011-10-14 | 2013-04-17 | 中国矿业大学(北京) | Gas extraction method by using major diameter pipeline and sealing transverses between mine goaf and tail roadway |
| CN202745919U (en) * | 2012-06-18 | 2013-02-20 | 淮南矿业(集团)有限责任公司 | Backward crossing shield type drainage system for mining face upper corner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943347A (en) * | 2021-03-17 | 2021-06-11 | 太原理工大学 | Multi-source gas efficient pre-extraction rapid outburst elimination method in middle-layer residual coal re-mining tunneling process |
| CN112943347B (en) * | 2021-03-17 | 2022-07-05 | 太原理工大学 | Multi-source gas efficient pre-extraction rapid outburst elimination method in middle-layer residual coal re-mining tunneling process |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
| CN117432461B (en) * | 2023-12-15 | 2024-03-19 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
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| CN104100291B (en) | 2016-05-11 |
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