CN204294131U - Coal mine low-concentration gas mixing device - Google Patents
Coal mine low-concentration gas mixing device Download PDFInfo
- Publication number
- CN204294131U CN204294131U CN201420786842.XU CN201420786842U CN204294131U CN 204294131 U CN204294131 U CN 204294131U CN 201420786842 U CN201420786842 U CN 201420786842U CN 204294131 U CN204294131 U CN 204294131U
- Authority
- CN
- China
- Prior art keywords
- low concentration
- concentration gas
- gas
- leading portion
- back segment
- Prior art date
- 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.)
- Withdrawn - After Issue
Links
- 238000002156 mixing Methods 0.000 title claims abstract description 27
- 239000003245 coal Substances 0.000 title claims description 18
- 238000013329 compounding Methods 0.000 claims description 46
- 239000000523 sample Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 2
- 101100006584 Mus musculus Clnk gene Proteins 0.000 abstract 1
- 239000003595 mist Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 82
- 239000000203 mixture Substances 0.000 description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a colliery low concentration gas blending device, join in marriage room, anterior segment air outlet chamber, back end and join in marriage room and back end air outlet chamber including the anterior segment that sets gradually and inside intercommunication, the anterior segment is joined in marriage the room left end and is equipped with the ventilation air inlet, back end air outlet chamber right-hand member is equipped with the mist export, the anterior segment is joined in marriage indoor wall and is fixed to be provided with preceding helical blade, the back end is joined in marriage indoor wall and is fixed to be provided with back helical blade, helical blade direction of rotation is opposite around, the anterior segment is joined in marriage the room and is equipped with preceding low concentration gas pipeline and preceding air pipeline, the back end is joined in marriage the room and is equipped with back low concentration gas pipeline. The utility model discloses a low concentration gas blending device, the gaseous even, the nothing reunion of thoughtlessly joining in marriage of obtained, can solve the unable problem with low concentration gas homogeneous mixing of exhaust.
Description
Technical field
The utility model belongs to coal mine gas and utilizes field, relates to coal mine light concentration mash gas blending device, and particularly a kind of mixture coal mine light concentration mash gas and mine air-lack or low concentration gas and air are to obtain the device of applicable subsequent oxidation combustion requirements.
Background technology
Weary wind also known as colliery wind resource assessment, be a kind of methane concentration lower than 0.75% coal mine gas.Because the gas density of weary wind is extremely low, be difficult to directly utilize, usually can only directly be discharged in air, the methane that China enters air by weary wind be every year equivalent to the transfering natural gas from the west to the east displacement of 1 year, not only waste mass energy, and cause serious greenhouse gases to pollute.Meanwhile, coal mine gas pumping plant concentration lower than 8% concentration gas also directly enter air because utilizing; Therefore, can be used after low concentration gas and weary wind mixture.
Occur that some utilize coal mine light concentration mash gas and mine air-lack or air blending in recent years, sent oxidation unit internal oxidition exothermic heat of reaction after mixture to finite concentration to and produce carbon dioxide and water.But mixing device is only applicable to mixture high flow rate gas at present, poor to the mixture effect of the weary gas of low flow velocity and low concentration gas, gained gaseous mixture each several part concentration difference is large, even there is low concentration gas laminar flow or low concentration gas group, have impact on coal extraction system and the safe operation utilizing system, potential safety hazard is large.
Therefore, be necessary to research and develop a kind of blending device being applicable to mixture low concentration gas and weary gas.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of blending device being applicable to mixture low concentration gas and weary gas.
For achieving the above object, the utility model provides following technical scheme:
A kind of coal mine light concentration mash gas blending device, comprise and setting gradually and the inner leading portion compounding chamber be communicated with, leading portion discharge chamber, back segment compounding chamber and back segment discharge chamber, described leading portion compounding chamber left end is provided with weary wind entrance, described back segment discharge chamber right-hand member is provided with mixed gas outlet, described leading portion compounding chamber inwall is fixedly installed front helical blade, described back segment compounding chamber inwall is fixedly installed rear screw blade, described front and back helical blade direction of rotation is contrary, described leading portion compounding chamber is provided with front low concentration gas pipeline and front air pipe line, described back segment compounding chamber is provided with rear low concentration gas pipeline and rear air pipe line.
As preferably of the present utility model, described front low concentration gas pipeline and front air pipe line are arranged on front helical blade front end, and described rear low concentration gas pipeline and rear air pipe line are arranged on rear screw vane nose.
As preferably of the present utility model, also comprise the sharf running through leading portion compounding chamber, leading portion discharge chamber, back segment compounding chamber and back segment discharge chamber successively, described sharf and leading portion compounding chamber, back segment discharge chamber, front helical blade and rear screw blade are welded and fixed.
As preferably of the present utility model, described leading portion compounding chamber is provided with front differential pressure pickup and front flow sensor, described leading portion discharge chamber is provided with front FID concentration sensor, described back segment compounding chamber is provided with rear differential pressure pickup and rear flow sensor, and described back segment discharge chamber is provided with rear FID concentration sensor.
As preferably of the present utility model, described leading portion compounding chamber and/or back segment compounding chamber horizontal diameter 1/4,2/4,3/4 place, arrange above and below device discharge chamber and have 3 groups of FID concentration sensors at least.
As preferably of the present utility model, front low concentration gas pipeline is provided with front low concentration gas shut-off valve, front low concentration gas flow control valve, front low concentration gas flow sensor, front low concentration gas concentration sensor and front low concentration gas pressure sensor, and front air pipe line is provided with front air shut off valve, front air flow rate adjustment valve, front air flow sensor and front air concentration sensor.
As preferably of the present utility model, rear low concentration gas pipeline is provided with rear low concentration gas shut-off valve, rear low concentration gas flow control valve, rear low concentration gas flow sensor, rear low concentration gas concentration sensor and rear low concentration gas pressure sensor, and rear air pipe line is provided with rear air shut off valve, rear air flow rate adjustment valve, rear air flow sensor and rear air pressure probe.
The beneficial effects of the utility model are:
Low concentration gas blending device of the present utility model, be provided with leading portion compounding chamber and back segment compounding chamber, and the contrary rotating vane of the hand of spiral is provided with in the section compounding chamber of front and back, constantly be accelerated under the effect of helical blade during gas mixing, the mixture gas uniform obtained, soilless sticking, can meet the requirement of subsequent handling completely; Blending device of the present utility model is divided into two sections, front and back, if when weary gas velocity is higher, then in back segment blender, pass into low concentration gas, if weary gas velocity is low, then be mixed into low concentration gas at leading portion leading portion, can solve weary gas like this cannot problem mixed uniformly with low concentration gas; The utility model is provided with air intake respectively in front and back section compounding chamber, like this can mixture low concentration gas and air when weary gas lacks, and avoids whole mixture process to occur being interrupted thus causing the pass of follow-up equipment (as boiler) to be shut down; In addition, because the utility model blending device is provided with multiple coil blade, the flue dust in mixture gas and moisture (in mixture gas eddy stream, flue dust and moisture are separated to mixing device inwall under the influence of centrifugal force) effectively can be reduced; The utility model is provided with pressure further and adds survey and concentration detection apparatus, the pressure reduction in the concentration of mixture gas and mixture process can be monitored at any time, counter-measure is taked immediately, the security that assurance device runs and reliability when occurring that the mixed pressure loss of mixture inequality is excessive.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is embodiment 1 low concentration gas blending device structural representation;
Fig. 2 be in Fig. 1 be 32 and 35 position sectional view.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Embodiment 1:
The present embodiment coal mine light concentration mash gas blending device, comprise and setting gradually and the inner leading portion compounding chamber 1 be communicated with, leading portion discharge chamber 3, back segment compounding chamber 2 and back segment discharge chamber 4, described leading portion compounding chamber 1 left end is provided with weary wind entrance, described back segment discharge chamber 4 right-hand member is provided with mixed gas outlet, described leading portion compounding chamber 1 inwall is fixedly installed front helical blade 6, described back segment compounding chamber 2 inwall is fixedly installed rear screw blade 7, described front and back helical blade direction of rotation is contrary, described leading portion compounding chamber 1 is provided with front low concentration gas pipeline 8 and front air pipe line 9, described back segment compounding chamber 2 is provided with rear low concentration gas pipeline 10 and rear air pipe line 11.
In the present embodiment, described front low concentration gas pipeline 8 and front air pipe line 9 are arranged on front helical blade 6 front end, and described rear low concentration gas pipeline 10 and rear air pipe line 11 are arranged on rear screw blade 7 front end.
In the present embodiment, also comprise the sharf 5 running through leading portion compounding chamber 1, leading portion discharge chamber 3, back segment compounding chamber 2 and back segment discharge chamber 4 successively, described sharf 5 is welded and fixed with leading portion compounding chamber 1, back segment discharge chamber 4, front helical blade 6 and rear screw blade 7.
In the present embodiment, described leading portion compounding chamber 1 is provided with front differential pressure pickup 30 and front flow sensor 31, described leading portion discharge chamber 3 is provided with front FID concentration sensor 32, described back segment compounding chamber 2 is provided with rear differential pressure pickup 33 and rear flow sensor 34, and described back segment discharge chamber 4 is provided with rear FID concentration sensor 35 (36 is ventilation air gas methane sampling and measuring hole).
In the present embodiment, described leading portion compounding chamber 1 and/or back segment compounding chamber 2 horizontal diameter 1/4,2/4,3/4 place, arrange above and below device discharge chamber and have 3 groups of hydrogen FID concentration sensors at least.
In the present embodiment, front low concentration gas pipeline 8 is provided with front low concentration gas shut-off valve 12, front low concentration gas flow control valve 13, front low concentration gas flow sensor 14, front low concentration gas concentration sensor 15 and front low concentration gas pressure sensor 16, and front air pipe line 9 is provided with front air shut off valve 17, front air flow rate adjustment valve 18, front air flow sensor 19 and front air concentration sensor 20.
In the present embodiment, rear low concentration gas pipeline 10 is provided with rear low concentration gas shut-off valve 21, rear low concentration gas flow control valve 22, rear low concentration gas flow sensor 23, rear low concentration gas concentration sensor 24 and rear low concentration gas pressure sensor 25, and rear air pipe line 11 is provided with rear air shut off valve 26, rear air flow rate adjustment valve 27, rear air flow sensor 28 and rear air pressure probe 29.
During use, if weary gas velocity is lower, weary gas is flowed into by device left end, and low concentration gas axially flows into along pipeline 8, converges in clock wise spirals blade 6 front and weary wind, mixes flow into leading portion discharge chamber 3 along helical blade 6; Flow out from back segment discharge chamber 4 along counter-clockwise helical blade 7 mixing in the other direction subsequently, enter weary wind oxidation unit.When mine air-lack gas high flow capacity, low concentration gas axially flows into along pipeline 10, converges in counter-clockwise helical blade 7 front and weary wind, mixes and flows into back segment discharge chamber 4, enter weary wind oxidation unit subsequently along helical blade 7.As found in mixture process, same cross section each several part mixture gas concentration is lower or mixture pressure reduction is excessive, then automatically cut off corresponding management and protect.
Low concentration gas blending device of the present utility model, the mixture gas uniform obtained, soilless sticking, can meet the requirement of subsequent handling completely, and weary gas can be solved cannot problem mixed uniformly with low concentration gas.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.
Claims (7)
1. a coal mine light concentration mash gas blending device, it is characterized in that: comprise and setting gradually and the inner leading portion compounding chamber (1) be communicated with, leading portion discharge chamber (3), back segment compounding chamber (2) and back segment discharge chamber (4), described leading portion compounding chamber (1) left end is provided with weary wind entrance, described back segment discharge chamber (4) right-hand member is provided with mixed gas outlet, described leading portion compounding chamber (1) inwall is fixedly installed front helical blade (6), described back segment compounding chamber (2) inwall is fixedly installed rear screw blade (7), described front and back helical blade direction of rotation is contrary, described leading portion compounding chamber (1) is provided with front low concentration gas pipeline (8) and front air pipe line (9), described back segment compounding chamber (2) is provided with rear low concentration gas pipeline (10) and rear air pipe line (11).
2. coal mine light concentration mash gas blending device according to claim 1, it is characterized in that: described front low concentration gas pipeline (8) and front air pipe line (9) are arranged on front helical blade (6) front end, described rear low concentration gas pipeline (10) and rear air pipe line (11) are arranged on rear screw blade (7) front end.
3. coal mine light concentration mash gas blending device according to claim 1, it is characterized in that: also comprise the sharf (5) running through leading portion compounding chamber (1), leading portion discharge chamber (3), back segment compounding chamber (2) and back segment discharge chamber (4) successively, described sharf (5) is welded and fixed with leading portion compounding chamber (1), back segment discharge chamber (4), front helical blade (6) and rear screw blade (7).
4. coal mine light concentration mash gas blending device according to claim 1, it is characterized in that: described leading portion compounding chamber (1) is provided with front differential pressure pickup (30) and front flow sensor (31), described leading portion discharge chamber (3) is provided with front FID concentration sensor (32), described back segment compounding chamber (2) is provided with rear differential pressure pickup (33) and rear flow sensor (34), and described back segment discharge chamber (4) is provided with rear FID concentration sensor (35).
5. coal mine light concentration mash gas blending device according to claim 1, it is characterized in that: described leading portion compounding chamber (1) and/or back segment compounding chamber (2) horizontal diameter 1/4,2/4,3/4 place, arrange above and below device discharge chamber and have 3 groups of FID concentration sensors at least.
6. coal mine light concentration mash gas blending device according to claim 1, it is characterized in that: front low concentration gas pipeline (8) is provided with front low concentration gas shut-off valve (12), front low concentration gas flow control valve (13), front low concentration gas flow sensor (14), front low concentration gas concentration sensor (15) and front low concentration gas pressure sensor (16), front air pipe line (9) is provided with front air shut off valve (17), front air flow rate adjustment valve (18), front air flow sensor (19) and front air concentration sensor (20).
7. coal mine light concentration mash gas blending device according to claim 1, it is characterized in that: rear low concentration gas pipeline (10) is provided with rear low concentration gas shut-off valve (21), rear low concentration gas flow control valve (22), rear low concentration gas flow sensor (23), rear low concentration gas concentration sensor (24) and rear low concentration gas pressure sensor (25), rear air pipe line (11) is provided with rear air shut off valve (26), rear air flow rate adjustment valve (27), rear air flow sensor (28) and rear air pressure probe (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786842.XU CN204294131U (en) | 2014-12-12 | 2014-12-12 | Coal mine low-concentration gas mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786842.XU CN204294131U (en) | 2014-12-12 | 2014-12-12 | Coal mine low-concentration gas mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204294131U true CN204294131U (en) | 2015-04-29 |
Family
ID=53099716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420786842.XU Withdrawn - After Issue CN204294131U (en) | 2014-12-12 | 2014-12-12 | Coal mine low-concentration gas mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204294131U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492290A (en) * | 2014-12-12 | 2015-04-08 | 中煤科工集团重庆研究院有限公司 | Coal mine low-concentration gas mixing device |
-
2014
- 2014-12-12 CN CN201420786842.XU patent/CN204294131U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492290A (en) * | 2014-12-12 | 2015-04-08 | 中煤科工集团重庆研究院有限公司 | Coal mine low-concentration gas mixing device |
| CN104492290B (en) * | 2014-12-12 | 2017-04-05 | 中煤科工集团重庆研究院有限公司 | Coal mine low-concentration gas mixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20170405 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20170405 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |