CN203547787U - Gas drainage device - Google Patents
Gas drainage device Download PDFInfo
- Publication number
- CN203547787U CN203547787U CN201320655317.XU CN201320655317U CN203547787U CN 203547787 U CN203547787 U CN 203547787U CN 201320655317 U CN201320655317 U CN 201320655317U CN 203547787 U CN203547787 U CN 203547787U
- Authority
- CN
- China
- Prior art keywords
- compressed gas
- air inlet
- gas
- inlet port
- drainage device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009987 spinning Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 230000000740 bleeding effect Effects 0.000 abstract 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000003245 coal Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000007865 diluting Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model relates to a gas drainage device, comprising a bleeding pipe with a bleeding point in the front end, and a compressed gas inlet which is backwards obliquely guided is formed in the rear side of the bleeding point in the bleeding pipe. When being used, the bleeding point of the bleeding pipe is placed in gas to extracted, compressed gas is led to the bleeding pipe through the compressed gas inlet, and backwards flows under the guide effect of the compressed gas inlet, gas flow with a negative pressure effect is formed by the high-speed compressed gas, the gas to be extracted is extracted to the bleeding pipe and backwards conveyed together with the compressed gas, the gas flow produced by the negative pressure effect can lead the flow of the gas to be extracted which is 20-30 times of the compressed gas, and the gas drainage efficiency is high; corresponding equipment such as a fan is not needed, the structure is simple, and the use is convenient.
Description
Technical field
The utility model relates to a kind of gas drainage device.
Background technology
Under the normal ventilation condition of stope working surface of coal mines, form one and enter " U " shape stope of a time, under the leeway and drift effect of work plane air intake lane and return airway, upper corner is as the intersection of leaking out of work plane, is the goaf gas Bi Jingzhi road that gushes out.While is along with the intensification gradually of mining depth, center of production progressively shifts to coal seam, deep, relative abundance of methane and absolute gas emission rate are in rising trend, being caving of goaf overlying rock, the mining pressure of adjacent layer and country rock, coal column, make a large amount of gas pour in goaf, must cause Gas Accumulation in Upper-Corner by Pulsed.In addition, with respect to air, the density that goaf includes gas air is less, thereby produce the natural climbing power of " gas blast ", the air that must make goaf include high concentration gas gathers to upper corner, make upper corner become goaf high concentration gas and concentrate the place gushing out, gas density constitutes a threat to safety of coal mines while surpassing 4%.
Upper corner gas treatment measures have air partition wind-guiding dilution upper corner gas, utilize booster to ventilate, adopt face reasonable wind distribution etc. at present, although these methods have played important function to reducing upper corner gas density, but also all exist various inadequate natural endowments, as little in the air partition wind-guiding scope of application, place at high concentration and low air quantity is inapplicable, and air partition is easily destroyed; Booster ventilates need to dispose equipment, has occupied certain digging space, affects operating environment, increases daily management and maintenance cost; Adopt face reasonable wind distribution to the having relatively high expectations of installation personnel, and for high strength fully mechanized coal winning technology, its application is limited.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure and gas drainage device that drainage efficient is high.
In order to address the above problem, a kind of gas drainage device of the present utility model, is characterized in that: comprise that front end is provided with the exhaust tube of extract opening, the rear side in described extract opening on described exhaust tube is provided with the Compressed Gas air inlet port of oriented backwards.
Described extract opening is the enlarging shape being increased gradually to front bore by rear.
Described exhaust tube rear end is connected with telescopic drainage tube.
The guiding end of travel of the rear wall of described Compressed Gas air inlet port is smooth outer convex.
The width of described Compressed Gas air inlet port on fore-and-aft direction is 0.05 ~ 0.1mm.
Described Compressed Gas air inlet port is loop configuration, and the periphery of described Compressed Gas air inlet port is provided with the annular inlet chamber being communicated with Compressed Gas air inlet port, is provided with the connector for being connected with corresponding Compressed Gas pipeline on the chamber wall of described annular inlet chamber.
Described exhaust tube comprises by screw thread spinning front tube portion together and dividing and rear tube portion, the rear end that described front tube portion divides is provided with front annular end face, the front end of described rear tube portion is provided with the rear annular end face being oppositely arranged with front annular end face interval, and described Compressed Gas air inlet port is surrounded by described forward and backward annular end face.
The beneficial effects of the utility model are: during use, the extract opening of exhaust tube is placed in to body to be bled, then by Compressed Gas air inlet port, in exhaust tube, pass into Compressed Gas, the guide effect of Compressed Gas compressed gas air inlet port is flowed backwards, the compressed gas of high speed is known from experience the air-flow that forms underbalance effect simultaneously, thereby will body be bled be pumped in exhaust tube and with Compressed Gas, carry backward, the air-flow that underbalance effect produces can guide 20-30 doubly to the gas flow to be taken out of Compressed Gas, and drainage efficient is high; Do not need to arrange the relevant devices such as blower fan simultaneously yet, simple in structure, easy to use.
Accompanying drawing explanation
Fig. 1 is the use state diagram of an embodiment of the present utility model;
Fig. 2 is the structural representation of exhaust tube in Fig. 1.
The specific embodiment
A kind of embodiment of gas drainage device is as shown in Figure 1 and 2: comprise that front end is provided with the exhaust tube 1 of extract opening 13, the rear end of exhaust tube is connected with telescopic drainage tube 2.Exhaust tube comprises by screw thread spinning front tube portion together and divides 1-2 and rear tube portion 1-1, extract opening is arranged at front tube portion and divides, front tube portion divides and is covered with rectifying tube 5, on the tube wall of rectifying tube, offer blow vent 6, extract opening is the enlarging shape being increased gradually to front bore by rear, the rear end that front tube portion divides is provided with front annular end face, the front end of rear tube portion is provided with the rear annular end face being oppositely arranged with front annular end face interval, before, rear annular end face surrounds the Compressed Gas air inlet port 8 of oriented backwards, Compressed Gas air inlet port is narrow annular channel structure, the width of Compressed Gas air inlet port on fore-and-aft direction is 0.07mm, the guiding end of travel of the rear wall 9 of Compressed Gas air inlet port is smooth outer convex, on exhaust tube, in the periphery of Compressed Gas air inlet port, be provided with the annular inlet chamber 10 being communicated with Compressed Gas air inlet port of annular, annular inlet chamber is by front, the counter structure of rear tube portion surrounds, on the chamber wall of annular inlet chamber, be provided with the connector 7 for being connected with corresponding Compressed Gas pipeline.
Take below draws out methane as example carries out respective description to the use of this gas drainage device, during use, the extract opening of exhaust tube is placed in to the upper corner in matchmaker ore deposit, then by Compressed Gas air inlet port, in exhaust tube, pass into Compressed Gas, the wall attachment effect of the guide effect of compressed gas air inlet port and rear tube portion, Compressed Gas 11 flows backwards along the tube wall of rear tube portion, Compressed Gas forms the air-flow of underbalance effect, thereby gas 12 is pumped in exhaust tube and with Compressed Gas and is carried backward, gas is pumped to mixed diluting in telescopic drainage tube, the gas diluting is because the pressure-acting of follow-up Compressed Gas endlessly and methane gas generation enters gas pipe tapping equipment 3, finally enter in drawing-off gas pipeline 4.In the utility model, gas drainage device is without power supply and complex operations technique, only depend on Compressed Gas just can effectively solve mine coal-cutting face upper corner angle gas exceeding limit problem, energy-saving safe, single unit system is exquisite simultaneously, without larger installing space, do not affect mining work operating environment, convenient for installation and maintenance, drainage efficient is high.Certainly this gas drainage device can also need for some other working environment of extraction gas; The extract opening of enlarging shape is conducive to facilitate methane gas to enter in exhaust tube on the one hand, is conducive on the other hand improve the flow velocity of methane gas; Forward and backward tube portion spinning, can be adjusted at any time to the width of Compressed Gas air inlet port together.
In other embodiment of the present utility model: the shape of extract opening can also be cylindrical shape or other shape; Telescopic drainage tube also can be as a part for this gas drainage device, and an outsourcing piece such as in use, is just assembled on exhaust tube during use; The guiding end of travel of the rear wall of Compressed Gas air inlet port can also be rectilinear structure, although the now guide effect of Compressed Gas compressed gas air inlet port and towards exhaust tube central motion, can also form negative pressure and gas is sucked in exhaust tube; The width of Compressed Gas air inlet port on fore-and-aft direction can also be other arbitrary value in 0.05 ~ 0.1mm or the size outside 0.05 ~ 0.1mm; Compressed Gas air inlet port can not be also loop configuration, such as comprise a plurality of around the circumferential spaced apart air inlet of exhaust tube or single air inlet, when Compressed Gas air inlet port consists of single air inlet, annular inlet chamber can not established yet, certainly now, forward and backward tube portion can also be an overall structure, such as forward and backward tube portion is one-body molded or be welded into overall structure; Rectifying tube can not established yet.
Claims (7)
1. a gas drainage device, is characterized in that: comprise that front end is provided with the exhaust tube of extract opening, the rear side in described extract opening on described exhaust tube is provided with the Compressed Gas air inlet port of oriented backwards.
2. gas drainage device according to claim 1, is characterized in that: described extract opening is the enlarging shape being increased gradually to front bore by rear.
3. gas drainage device according to claim 1, is characterized in that: described exhaust tube rear end is connected with telescopic drainage tube.
4. gas drainage device according to claim 1, is characterized in that: the guiding end of travel of the rear wall of described Compressed Gas air inlet port is smooth outer convex.
5. gas drainage device according to claim 1, is characterized in that: the width of described Compressed Gas air inlet port on fore-and-aft direction is 0.05 ~ 0.1mm.
6. according to the gas drainage device described in claim 1 ~ 5 any one, it is characterized in that: described Compressed Gas air inlet port is loop configuration, the periphery of described Compressed Gas air inlet port is provided with the annular inlet chamber being communicated with Compressed Gas air inlet port, is provided with the connector for being connected with corresponding Compressed Gas pipeline on the chamber wall of described annular inlet chamber.
7. gas drainage device according to claim 6, it is characterized in that: described exhaust tube comprises by screw thread spinning front tube portion together and dividing and rear tube portion, the rear end that described front tube portion divides is provided with front annular end face, the front end of described rear tube portion is provided with the rear annular end face being oppositely arranged with front annular end face interval, and described Compressed Gas air inlet port is surrounded by described forward and backward annular end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320655317.XU CN203547787U (en) | 2013-10-23 | 2013-10-23 | Gas drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320655317.XU CN203547787U (en) | 2013-10-23 | 2013-10-23 | Gas drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547787U true CN203547787U (en) | 2014-04-16 |
Family
ID=50465916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320655317.XU Expired - Lifetime CN203547787U (en) | 2013-10-23 | 2013-10-23 | Gas drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
-
2013
- 2013-10-23 CN CN201320655317.XU patent/CN203547787U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: GLTECH Co.,Ltd. Address before: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee before: ZHEJIANG GUANGLI TECH DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |