CN202348323U - Coal mine gas drainage drill combination hole-main pipe hole linkage structure - Google Patents

Coal mine gas drainage drill combination hole-main pipe hole linkage structure Download PDF

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Publication number
CN202348323U
CN202348323U CN2011204854915U CN201120485491U CN202348323U CN 202348323 U CN202348323 U CN 202348323U CN 2011204854915 U CN2011204854915 U CN 2011204854915U CN 201120485491 U CN201120485491 U CN 201120485491U CN 202348323 U CN202348323 U CN 202348323U
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CN
China
Prior art keywords
pipe
drainage
hole
extraction
gas
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Expired - Lifetime
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CN2011204854915U
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Chinese (zh)
Inventor
申晋伟
张国亮
郭青
徐光亮
段志国
任海慧
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Shanxi Jincheng Anthracite Mining Group Co Ltd
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Shanxi Jincheng Anthracite Mining Group Co Ltd
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Priority to CN2011204854915U priority Critical patent/CN202348323U/en
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Publication of CN202348323U publication Critical patent/CN202348323U/en
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Abstract

The utility model relates to a coal mine gas drainage device, in particular to a coal mine gas drainage drill combination hole-main pipe hole linkage structure, which solves the problems of being low in drainage efficiency, large in potential safety hazards and the like in a coal mine gas drainage process. The coal mine gas drainage drill combination hole-main pipe hole linkage structure comprises a drainage main pipe, a drainage branch pipe, a flow converging pipe, a water drainage device, a bypass pipe and a hole linkage pipe arranged in a gas drill. The drainage main pipe is connected with the drainage branch pipe and the bypass pipe, a normally open valve is arranged on the drainage branch pipe, a normally close valve is arranged on the bypass pipe, the drainage branch pipe is connected with the water drainage device, the hole linkage pipe is connected with the flow converging pipe, one end of the flow converging pipe is connected with the bypass pipe, the other end of the flow converging pipe is connected with the water discharging device, the flow converging pipe is inclined, and the water drainage device is arranged at the lowest position. Gas in the drill is kept in a negative pressure state throughout, and high concentration gas is prevented from overflowing. Conduction of normal work is not affected, drainage efficiency is high, and drainage is safe.

Description

Coal mine gas extraction borehole group hole-person in charge Shi Lian pore structure
Technical field
The utility model relates to a kind of coal mine gas extraction device, is specially a kind of coal mine gas extraction borehole group hole-person in charge Shi Lian pore structure.
Background technology
Through domestic part extraction mine and Shanxi coal group highly gassy mine extraction borehole couplet hole are carried out the analysis-by-synthesis discovery, exhausted most mine adopts common sinuous coil single hole to join the hole mode, a series of problems below this hole mode exists:
(1) common sinuous coil connection exists potential safety hazard, common sinuous coil material not to do the flame-retardant and anti-static processing, is easy to generate static, causes potential safety hazard; Hole when connecting with the extraction pipeline, the on-the-spot cutting coil that needs spark possibly occur during cutting, has increased the safety management difficulty.
(2) the extraction borehole single hole joins the hole system complex, and management difficulty is big, and boring adopts single hole to connect; Little in the spacing of wells, when quantity was held close crowded collection more and arranged, each boring all will connect with the extraction pipeline; System's complex connection; Increase system gas leakage link, the system management difficulty is big, and standardization is low.Because sinuous coil belongs to soft connection, must form the radian of sinking between two sealing of holes, is easy to generate ponding accumulated slag phenomenon in the extraction process, cause pipe-line system to be stopped up, influence the normal operation of system.
(3) sinuous coil couplet pipe interface place, hole is prone to cause gas leakage; When adopting sinuous coil to carry out the single hole connection, sinuous coil bundlees with all adopting the bar silk connecting of positions such as threeway, valve, tailrace, owing in the sinuous coil steel-wire carcass is arranged; Add the operator's degree of tightening difference to the bar silk in connection procedure; Be easier to cause the gas leakage of pipeline junction, reduce the hole pumping and mining negative pressure, influence the gas pumping effect.
The patent No. is 201020108883.5 to disclose a kind of device that improves the gas drainage under suction amount; In this technical scheme, propose; Between the gas couplet hole pipe and the extraction person in charge, increased a collecting pipe again, connected tailrace on the collecting pipe, made the gas in the gas extraction hole be pooled in the collecting pipe earlier; Discharge water through tailrace, can improve the extraction amount of gas like this.But when discharging water, need the valve closing on the arm be influenced normally carrying out of extraction like this.
Solved sinuous coil single hole that present extraction borehole generally adopts and connected and have potential safety hazard, extraction system complex, inefficiency, management difficulty is big, and standardization is low, joins situation such as hole cost height.
Summary of the invention
Problems such as the utility model is low in order to solve the drainage efficient that exists in the gas discharge in mine process, and potential safety hazard is big provide a kind of coal mine gas extraction borehole group hole-person in charge Shi Lian pore structure.
The utility model is realized by following technical scheme, and a kind of coal mine gas extraction borehole group hole-person in charge Shi Lian pore structure comprises the extraction person in charge, the extraction arm; Collecting pipe, tailrace, bypass pipe is installed in the couplet hole pipe in the gas boring; Extraction is responsible for and is connected extraction arm and bypass pipe, and the extraction arm is provided with the normally open valve door, and bypass pipe is provided with normal closed gate; The extraction arm connects tailrace, joins the hole pipe and connects collecting pipe, and collecting pipe one end connects bypass pipe; The other end connects tailrace, and collecting pipe is skewed, and tailrace is positioned at lowest part.
Compared with prior art, increased bypass pipe in the structure design of the utility model, so under normal circumstances; Gas master releasing pipe keeps the gas in the negative pressure extraction collecting pipe; When needs discharge water, the valve of extraction arm is connected the valve Close All of collecting pipe with tailrace, open the valve of bypass pipe then; Like this under the situation that tailrace normally discharges water, bypass pipe can play the effect of gas drainage under suction in be responsible for.Make the interior gas of boring remain negative pressure state, avoided overflowing of high concentration gas.Do not influence the carrying out of operate as normal, drainage efficient is high, and safety.
Description of drawings
Fig. 1 is the structural representation of the utility model
Among the figure: the 1-extraction person in charge, 2-extraction arm, 3-tailrace, 4-collecting pipe, the boring of 5-gas, 6-join hole pipe, 7-distributing valve, 8-Draw off valve, 9-bypass pipe, 10-normal closed gate, 11, and 12-normally open valve door, 13-are responsible for threeway.
The specific embodiment
Meaning as shown in Figure 1, a kind of coal mine gas extraction borehole group hole-person in charge Shi Lian pore structure comprises the extraction person in charge 1, extraction arm 2; Collecting pipe 4, tailrace 3, bypass pipe 9 is installed in the couplet hole pipe 6 in the gas boring 5; Extraction is responsible for 1 and is connected extraction arm 2 and bypass pipe 9, and extraction arm 2 is provided with normally open valve door 12, and bypass pipe 9 is provided with normal closed gate 10; Extraction arm 2 connects tailrace, joins hole pipe 6 and connects collecting pipe 4, and collecting pipe 4 one ends connect bypass pipe 9; The other end connects tailrace 3, and collecting pipe 4 is skewed, and tailrace 3 is positioned at lowest part.Above tailrace, be provided with distributing valve 7, downside is provided with Draw off valve 8.
Under the normal extraction situation, distributing valve 7, Draw off valve 8, normal closed gate 10 are closed, and normally open valve 11,12 is opened, and the gas in the gas boring 5 is managed in the 6 suction collecting pipes 4 through joining the hole, is responsible in 1 through the 2 suction extractions of extraction arm through tailrace 3 again.
In the time of need discharging water, close normally open valve door 11,12, tailrace 3 is isolated with the boring 5 of the extraction person in charge 1, mash gas extraction; Normal closed gate 10 is opened, and the gas in the gas boring 5 is managed in the 6 suction collecting pipes 4 through joining the hole, is responsible in 1 through bypass pipe 9 suction extractions again; Open distributing valve 7, Draw off valve 8, the water in the tailrace is emitted through Draw off valve 8.Through increasing bypass pipe, avoided when discharging water because in the boring gas pressure big, in the tunnel, overflow high concentration gas, cause the problem of gas exceeding limit in the tunnel.
After having put water, recover the state of normal extraction situation.

Claims (2)

1. coal mine gas extraction borehole group hole-person in charge Shi Lian pore structure is characterized in that: comprise the extraction person in charge (1), extraction arm (2); Collecting pipe (4), tailrace (3), bypass pipe (9); Be installed in the couplet hole pipe (6) in the gas boring (5), extraction is responsible for (1) and is connected extraction arm (2) and bypass pipe (9), and extraction arm (2) is provided with normally open valve door (12); Bypass pipe (9) is provided with normal closed gate (10), and extraction arm (2) connects tailrace, joins hole pipe (6) and connects collecting pipe (4); Collecting pipe (4) one ends connect bypass pipe (9); The other end connects tailrace (3), and collecting pipe (4) is skewed, and tailrace (3) is positioned at lowest part.
2. coal mine gas extraction borehole group according to claim 1 hole-person in charge Shi Lian pore structure is characterized in that: be provided with distributing valve (7) in tailrace (3) top, downside is provided with Draw off valve (8).
CN2011204854915U 2011-11-30 2011-11-30 Coal mine gas drainage drill combination hole-main pipe hole linkage structure Expired - Lifetime CN202348323U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204854915U CN202348323U (en) 2011-11-30 2011-11-30 Coal mine gas drainage drill combination hole-main pipe hole linkage structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204854915U CN202348323U (en) 2011-11-30 2011-11-30 Coal mine gas drainage drill combination hole-main pipe hole linkage structure

Publications (1)

Publication Number Publication Date
CN202348323U true CN202348323U (en) 2012-07-25

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061797A (en) * 2012-12-24 2013-04-24 孙利民 Method and device for increasing the coal mine gas drainage efficiency
CN105298533A (en) * 2015-10-21 2016-02-03 煤炭科学技术研究院有限公司 Drainage system and drainage device for gas extraction drilling hole
CN105464697A (en) * 2016-01-04 2016-04-06 淮北矿业股份有限公司 Self-made automatic water discharge device
CN108626482A (en) * 2018-04-23 2018-10-09 西山煤电建筑工程集团有限公司矿建第分公司 The construction method of vertical gas pipe is installed using anti-well drilling machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061797A (en) * 2012-12-24 2013-04-24 孙利民 Method and device for increasing the coal mine gas drainage efficiency
CN103061797B (en) * 2012-12-24 2015-04-08 深圳市环球博洋机电科技有限公司 Method and device for increasing the coal mine gas drainage efficiency
CN105298533A (en) * 2015-10-21 2016-02-03 煤炭科学技术研究院有限公司 Drainage system and drainage device for gas extraction drilling hole
CN105464697A (en) * 2016-01-04 2016-04-06 淮北矿业股份有限公司 Self-made automatic water discharge device
CN108626482A (en) * 2018-04-23 2018-10-09 西山煤电建筑工程集团有限公司矿建第分公司 The construction method of vertical gas pipe is installed using anti-well drilling machine

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Granted publication date: 20120725

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