CN114294042A - Equipment and method for treating low oxygen at return air corner - Google Patents
Equipment and method for treating low oxygen at return air corner Download PDFInfo
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- CN114294042A CN114294042A CN202210106221.1A CN202210106221A CN114294042A CN 114294042 A CN114294042 A CN 114294042A CN 202210106221 A CN202210106221 A CN 202210106221A CN 114294042 A CN114294042 A CN 114294042A
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- air
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000001301 oxygen Substances 0.000 title abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 title abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 206010021143 Hypoxia Diseases 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 11
- 230000007954 hypoxia Effects 0.000 claims description 10
- 239000003595 mist Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 5
- 230000003584 silencer Effects 0.000 claims description 4
- 208000018875 hypoxemia Diseases 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The invention relates to equipment and a method for treating low oxygen at a return air corner, belonging to the technical field of coal mine safety. The equipment comprises an air compressor positioned on the ground and a compressed air pipeline connected with the air compressor, wherein one end of the compressed air pipeline, which is far away from the air compressor, is provided with a connecting device, the connecting device is communicated with an air outlet device through a high-pressure connecting pipe, the air outlet device comprises a plurality of hollow vertical pipes, the two ends of each vertical pipe are sealed, each vertical pipe is provided with an air inlet connected with the high-pressure connecting pipe, and the vertical pipes are provided with a plurality of air outlet holes which are uniformly arranged along the axial extension direction; the vertical pipe is vertically fixed on the hydraulic support at the return air corner of the working face, so that the air outlet is opposite to the return air corner. The air compression belt is formed through the equipment, and the technical problem of low oxygen at the corner of the return air is solved.
Description
Technical Field
The invention belongs to the technical field of coal mine safety, and particularly relates to equipment and a method for treating low oxygen at a return air corner.
Background
With the continuous deepening of coal mining depth and the continuous increasing of mining intensity, the phenomena that the oxygen concentration is lower than a safety value and the concentration of toxic and harmful gases exceeds the standard often occur at the air return corner during the stoping period of the fully mechanized top coal caving face, great potential safety hazards are brought to the safety production of coal mines, measures are even stopped to prevent and control, and the production efficiency of coal mines is severely restricted. The main reason is that low-oxygen gas in the goaf intensively gushes out from the return corner at the lowest negative pressure point of the fully mechanized mining face, so that the oxygen concentration of the return corner of the working face is reduced.
The current common low-oxygen prevention and control method for the working face mainly comprises pressure equalization, up-and-down leakage stoppage, construction of wind-blocking walls at upper and lower corners, arrangement of a wind-guiding curtain at the upper corner, hanging of the wind-blocking curtains at the upper and lower corners, installation of a special pumping and exhausting fan at a return air corner and the like.
Disclosure of Invention
In view of the above, the present invention is directed to an apparatus and method for treating low oxygen at a return air corner, which solves the technical problem of low oxygen at a return air corner by forming a compressed air zone.
In order to achieve the purpose, the invention provides the following technical scheme:
the equipment for treating the hypoxia of the return air corner comprises an air compressor positioned on the ground and a compressed air pipeline connected with the air compressor, wherein a connecting device is arranged at one end, away from the air compressor, of the compressed air pipeline, the connecting device is communicated with an air outlet device through a high-pressure connecting pipe, the air outlet device comprises a plurality of hollow vertical pipes, the two ends of each vertical pipe are sealed, each vertical pipe is provided with an air inlet connected with the high-pressure connecting pipe, and the vertical pipes are provided with a plurality of air outlet holes which are uniformly arranged along the axial extension direction; the vertical pipe is vertically fixed on the hydraulic support at the return air corner of the working face, so that the air outlet hole is opposite to the return air corner.
Furthermore, the number of the vertical pipes is 4, and the vertical pipes are fixedly connected through transverse rods perpendicular to the vertical pipes.
Furthermore, a silencer is arranged on the air outlet.
Furthermore, the connecting device is a steel pipe, the diameter of the steel pipe is the same as that of the compressed air pipeline, one end of the steel pipe is connected with the compressed air pipeline through a flange, the other end of the steel pipe is closed, and the steel pipe is provided with a quick connector.
Furthermore, a high-pressure water mist spray head for spray dust removal is arranged on the vertical pipe.
The method for treating the hypoxia of the return air corner comprises the steps of using the device for treating the hypoxia of the return air corner, mounting the vertical pipes on a hydraulic support of a working face of a mine, enabling a plurality of vertical pipes to be arranged in parallel in a vertical section of the working face, and enabling air outlet holes to face the return air corner; connecting an air compressor on the ground with the compressed air pipeline, and connecting a connecting device of the compressed air pipeline with an air inlet of the vertical pipe through a high-pressure connecting pipe; and opening the air compressor, compressing external air by the air compressor, sequentially passing through the compressed air pipeline, the connecting device, the high-pressure connecting pipe and the air inlet to enter the vertical pipe, blowing out the air through the air outlet hole, and forming a compressed air zone in the return air corner area.
Furthermore, the high-pressure water mist spray head arranged on the vertical pipe is provided with an independent water pipeline, and a switch of the high-pressure water spray head is turned on to remove dust from the return air corner.
The invention has the beneficial effects that:
the main thinking of administering of prior art is for reducing collecting space area to the working face air leakage, and this application sets forth the notion of compressed air area from the angle that increases the new fresh wind of return air corner innovatively, and through the equipment that forms compressed air area, forms a higher compressed air area of pressure in return air corner district, not only can reduce the gaseous spill over to the return air corner of collecting space area hypoxemia, still continuously provides fresh air, has solved the problem of working face return air corner hypoxemia. The application makes full use of the mine ground pressure fan and the working face pressure air pipeline, and solves the problems of the source and the conveying of the fresh air on the ground. And the silencer is additionally arranged on the opening, so that the problem of high noise at the outlet is solved. The high-pressure water spray nozzles are additionally arranged on the vertical pipes, so that the dust settling effect of the return air corner is achieved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of an apparatus for managing hypoxia in a corner of a return air;
FIG. 2 is a schematic view of an air outlet device for treating hypoxia at a corner of a return air;
fig. 3 is a schematic view of an installation for managing low oxygen in a corner of a return air.
Reference numerals: the device comprises an air compressor 1, an air pressing pipeline 2, a connecting device 3, a high-pressure connecting pipe 4, a vertical pipe 5, a cross rod 6, an air inlet 7, a hydraulic support 8, an air return corner 9, an air pressing belt 10 and a high-pressure water mist spray head 11.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-3, an apparatus for treating low oxygen at a return air corner comprises an air compressor 1 located outside a mine tunnel and a compressed air pipeline 2 connected with the air compressor 1, wherein a connecting device 3 is arranged at one end of the compressed air pipeline 2 far away from the air compressor 1, the connecting device 3 is communicated with an air outlet device through a high-pressure connecting pipe 4, the air outlet device comprises 4 hollow vertical pipes 5, and all the vertical pipes 5 are fixedly connected through a cross rod 6 perpendicular to the vertical pipes 5; the cross bar 6 in this embodiment fixes the left 3 risers and the right 3 risers on the hydraulic support 8, preferably all risers together. The two ends of the vertical pipe 5 are sealed, the vertical pipe 5 is provided with an air inlet 7 connected with the high-pressure connecting pipe 4, and the vertical pipe 5 is provided with a plurality of air outlet holes which are uniformly arranged along the axial extension direction; the vertical pipe 5 is vertically fixed on a hydraulic support 8 of a stope face, so that the air outlet is opposite to a return air corner 9.
The connecting device 3 is a steel pipe, the diameter of the steel pipe is the same as that of the compressed air pipeline 2, one end of the steel pipe is connected with the compressed air pipeline 2 through a flange plate, the other end of the steel pipe is blocked by a blind plate, a quick connector is further arranged on the steel pipe, and the tail end of the high-pressure connecting pipe 4 is a reducing connector with one end changed into two ends.
The vertical pipe 5 is provided with a high-pressure water mist nozzle 11 for spraying and dedusting, and the high-pressure water mist nozzle 11 is fixed at the air outlet of the vertical pipe 5, is communicated with an independent high-pressure water pipeline and is used for dedusting the return air corner 9. The air outlet is also provided with a silencer, so that the noise generated at the air outlet can be effectively reduced.
A method for treating the hypoxia of the return air corner comprises the steps of fixing and installing vertical pipes 5 on a hydraulic support 8 on a stope face by using the device for treating the hypoxia of the return air corner, enabling 4 vertical pipes 5 to be arranged in the vertical section of a mine tunnel of the stope face side by side, and enabling air outlet holes to face the region of the return air corner 9; connecting an air compressor 1 on the ground with a compressed air pipeline 2, laying the compressed air pipeline 2 to an air return corner 9 along an air return roadway, and connecting a quick connector on a connecting device 3 at the tail end of the compressed air pipeline 2 with an air inlet 7 of a vertical pipe 5 through a high-pressure connecting pipe 4; the air compressor 1 is opened, the air compressor 1 compresses external air to sequentially pass through the compressed air pipeline 2, the connecting device 3, the high-pressure connecting pipe 4 and the air inlet 7 to enter the vertical pipe 5, the compressed air is blown out through the air outlet, the whole air return corner 9 area forms a compressed air zone 10, the compressed air zone 10 continuously enters the air return corner 9 to form a high-pressure zone, the low-oxygen gas in the goaf can be effectively prevented from overflowing to the air return corner 9, external oxygen can be continuously provided, and oxygen deficiency is prevented.
When the return air corner 9 needs to be dedusted, the high-pressure water mist nozzle 11 arranged on the vertical pipe 5 is opened, and high-pressure water enters the high-pressure water mist nozzle 11 through an independent water pipeline to spray and dedust the return air corner 9.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (7)
1. The utility model provides an administer equipment of return air corner hypoxemia, includes the air compressor machine that is located ground and the compressed air pipeline that links to each other with the air compressor machine, its characterized in that: the air compressor is characterized in that one end of the compressed air pipeline, which is far away from the air compressor, is provided with a connecting device, the connecting device is communicated with an air outlet device through a high-pressure connecting pipe, the air outlet device comprises a plurality of hollow vertical pipes, two ends of each vertical pipe are sealed, each vertical pipe is provided with an air inlet connected with the high-pressure connecting pipe, and the vertical pipes are provided with a plurality of air outlet holes which are uniformly arranged along the axial extension direction; the vertical pipe is vertically fixed on the hydraulic support at the return air corner of the working face, so that the air outlet hole is opposite to the return air corner.
2. The apparatus of claim 1 wherein the apparatus further comprises: the number of the vertical pipes is 4, and the vertical pipes are fixedly connected through transverse rods perpendicular to the vertical pipes.
3. The apparatus of claim 1 wherein the apparatus further comprises: and a silencer is arranged on the air outlet.
4. The apparatus of claim 1 wherein the apparatus further comprises: the connecting device is a steel pipe, the diameter of the steel pipe is the same as that of the compressed air pipeline, one end of the steel pipe is connected with the compressed air pipeline through a flange, the other end of the steel pipe is sealed, and the steel pipe is provided with a quick connector.
5. The apparatus of claim 1 wherein the apparatus further comprises: and the vertical pipe is provided with a high-pressure water mist spray head for spray dust removal.
6. A method for treating hypoxia at a corner of a return air is characterized by comprising the following steps: the device for treating the hypoxia of the return air corner comprises the following steps that (1) the vertical pipes are installed on a hydraulic support of a working face of a mine tunnel, the vertical pipes are arranged side by side in a vertical section of the working face, and the air outlet holes are opposite to the return air corner; connecting an air compressor on the ground with the compressed air pipeline, and connecting a connecting device of the compressed air pipeline with an air inlet of the vertical pipe through a high-pressure connecting pipe; and opening the air compressor, compressing external air by the air compressor, sequentially passing through the compressed air pipeline, the connecting device, the high-pressure connecting pipe and the air inlet to enter the vertical pipe, blowing out the air through the air outlet hole, and forming a compressed air zone in the return air corner area.
7. The method of managing return corner hypoxia as claimed in claim 6, wherein: and the high-pressure water mist spray head arranged on the vertical pipe is provided with an independent water pipeline, and a switch of the high-pressure water spray head is turned on to remove dust from the return air corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210106221.1A CN114294042A (en) | 2022-01-28 | 2022-01-28 | Equipment and method for treating low oxygen at return air corner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210106221.1A CN114294042A (en) | 2022-01-28 | 2022-01-28 | Equipment and method for treating low oxygen at return air corner |
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| Publication Number | Publication Date |
|---|---|
| CN114294042A true CN114294042A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210106221.1A Pending CN114294042A (en) | 2022-01-28 | 2022-01-28 | Equipment and method for treating low oxygen at return air corner |
Country Status (1)
| Country | Link |
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| CN (1) | CN114294042A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2881103Y (en) * | 2005-11-28 | 2007-03-21 | 高建顺 | Wind guide spray dust prevention device |
| CN201810334U (en) * | 2010-09-28 | 2011-04-27 | 江苏省矿业工程集团有限公司第四工程处 | Air return corner gas system utilizing compressed air spray |
| CN104791002A (en) * | 2015-04-07 | 2015-07-22 | 中国矿业大学(北京) | Technology and equipment for treating local gas accumulation through air multiplication principle |
| CN210239725U (en) * | 2019-06-13 | 2020-04-03 | 国家能源投资集团有限责任公司 | Working face return air corner oxygen increasing device |
| CN111911221A (en) * | 2020-08-14 | 2020-11-10 | 辽宁工程技术大学 | Low-oxygen treatment method for corners on stope face |
| US20210047927A1 (en) * | 2019-04-24 | 2021-02-18 | Shandong University Of Science And Technology | Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof |
| CN113266409A (en) * | 2021-05-26 | 2021-08-17 | 中煤科工集团沈阳研究院有限公司 | Low-oxygen prevention and control method for mine working face |
| CN214836478U (en) * | 2020-12-29 | 2021-11-23 | 山东鲁泰矿业有限公司 | Coal face return air corner gas diluting device |
-
2022
- 2022-01-28 CN CN202210106221.1A patent/CN114294042A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2881103Y (en) * | 2005-11-28 | 2007-03-21 | 高建顺 | Wind guide spray dust prevention device |
| CN201810334U (en) * | 2010-09-28 | 2011-04-27 | 江苏省矿业工程集团有限公司第四工程处 | Air return corner gas system utilizing compressed air spray |
| CN104791002A (en) * | 2015-04-07 | 2015-07-22 | 中国矿业大学(北京) | Technology and equipment for treating local gas accumulation through air multiplication principle |
| US20210047927A1 (en) * | 2019-04-24 | 2021-02-18 | Shandong University Of Science And Technology | Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof |
| CN210239725U (en) * | 2019-06-13 | 2020-04-03 | 国家能源投资集团有限责任公司 | Working face return air corner oxygen increasing device |
| CN111911221A (en) * | 2020-08-14 | 2020-11-10 | 辽宁工程技术大学 | Low-oxygen treatment method for corners on stope face |
| CN214836478U (en) * | 2020-12-29 | 2021-11-23 | 山东鲁泰矿业有限公司 | Coal face return air corner gas diluting device |
| CN113266409A (en) * | 2021-05-26 | 2021-08-17 | 中煤科工集团沈阳研究院有限公司 | Low-oxygen prevention and control method for mine working face |
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Application publication date: 20220408 |