CN102337917A - Blade swirl-type dilution mixer for gas drainage - Google Patents
Blade swirl-type dilution mixer for gas drainage Download PDFInfo
- Publication number
- CN102337917A CN102337917A CN2011102430000A CN201110243000A CN102337917A CN 102337917 A CN102337917 A CN 102337917A CN 2011102430000 A CN2011102430000 A CN 2011102430000A CN 201110243000 A CN201110243000 A CN 201110243000A CN 102337917 A CN102337917 A CN 102337917A
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- China
- Prior art keywords
- housing
- blade
- divergent channel
- convergent divergent
- inlet tube
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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.)
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- 238000010790 dilution Methods 0.000 title abstract 4
- 239000012895 dilution Substances 0.000 title abstract 4
- 238000000605 extraction Methods 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 63
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 40
- 230000003647 oxidation Effects 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 12
- 239000003245 coal Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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Abstract
The invention relates to a blade swirl-type dilution mixer for gas drainage, and the mixer provided by the invention comprises a tubular shell and a gas ejector tube. The gas ejector tube comprises an inlet tube and an expanding tube arranged at the outlet end of the inlet tube, wherein the inlet tube is a 90-degree bent tube and the inlet end is arranged outside the shell; the straight tube section, close to the inlet end, of the inlet tube vertically penetrates into the shell, and the straight tube section, close to the outlet end, of the inlet tube is horizontally arranged in the shell; and the inlet tube is connected with the expanding tube and faces towards the outlet end of the shell. The blade swirl-type dilution mixer is characterized in that an inner deflection blade, an outer deflection blade and a diversion cone are additionally arranged; the diversion cone is of a cone structure and is arranged in the expanding tube, and the tip of the diversion cone is back to the outlet end of the expanding tube; the axial lines of the straight tube section, close to the outlet end, of the inlet tube, the expanding tube and the diversion cone are positioned at the axis of the shell; the inner deflection blade is arranged in a cavity defined by the inner wall of the expanding tube and the outer wall of the diversion cone; and the outer deflection blade is arranged in a cavity defined by the outer wall of the expanding tube and the inner wall of the shell. The blade swirl-type dilution mixer has the advantages of simple structure, uniform mixing and low energy consumption for gas drainage and transmission.
Description
Technical field
The present invention relates to the air feed equipment of coal mine methane gas oxidation device; Relate in particular to a kind of blade spiral-flow type diluted mixture device of mash gas extraction, ventilation air gas or air of coal mine methane gas oxidation device, belong to super low concentration methane thermal counter flow oxidation and low-density technical field of energy recovery.
Background technology
The about 49Mt of methane content that mines in the global range and discharge every year accounts for about 9% of the interior discharge of methane total amount of global range.The concentration of methane in atmosphere is in each greenhouse gases fastest-rising one, and because of its strong greenhouse effect, the discharging of methane must receive effective control.The annual mash gas extraction of China is about billion cubic meter more than 50.The mash gas extraction that wherein utilizes only accounts for 1/4～1/3, and all the other all are in emptying state.Particularly concentration is lower than 8% low concentration mash gas extraction and can't carries out civilian or generating utilizes, and has only emptying.These methane that are discharged to the atmosphere not only cause serious atmosphere pollution, and have greatly wasted the energy.
The hot counter flow oxidation device of coal mine methane is the advanced technology that super low concentration methane is utilized, and can carry out the oxidation utilization in the oxidation unit with sending into behind mash gas extraction and air or the coal mine wind-lack gas mixed diluting.In order to guarantee the coal mine methane gas oxidation device safe operation, in general the methane gas concentration that requires to get into the oxidation unit oxidation bed will be less than 1.5% well below the explosion limit of gas, local overrich phenomenon can not occur.The blade cyclone mixer is the critical component that guarantees mash gas extraction and air or coal mine wind-lack gas mixing uniformity in this oxidation unit; Can make methane concentration and be 0.3%～1.2% gaseous mixture, its performance quality influences stability, economy and the safety of methane conversion, device to a great extent.
Patent " oxidation unit Device in Gas blending gas handling system " (CN200920025062.2) in; The person in charge of gas blender and looped pipeline design more complicated; And get into the gas air inlet person in charge from very thin looped pipeline in 360 ° of scopes of the methane gas of high concentration, increased the danger that high concentration gas and wall friction are blasted.In patent " blender of colliery mash gas extraction and ventilation air gas " (CN 201010274136.3), the circular cone tail pipe that the complex structure of blender and its are uniformly distributed with the gas induction tunnel of aperture can bring very big flow resistance, increases the energy consumption that transports gas.In addition, also do not see the gas diluted mixture device that has structure and performance all fairly perfect at present.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can overcome above-mentioned defective; Remedy the deficiency of existing coal mine methane gas oxidation device supply technology; Provide a kind of mash gas extraction, ventilation air gas or even air are mixed, and be reduced to the mash gas extraction blade spiral-flow type diluted mixture device of safe concentration.Its technical scheme is:
A kind of mash gas extraction blade spiral-flow type diluted mixture device; The housing and the gas induction tunnel that comprise tubulose; The gas induction tunnel comprises inlet tube and the convergent divergent channel that is installed in the inlet tube port of export; Wherein inlet tube is that 90 ° of bend pipes, arrival ends are arranged on outside the housing, and inlet tube vertically penetrates in the housing, is horizontally set in the housing near the straight length of the port of export near the straight length of arrival end, links to each other with convergent divergent channel and towards the port of export of housing; It is characterized in that: set up intrinsic deflection blade, extrinsic deflection blade and deflection cone; Deflection cone is a cone structure, is positioned at convergent divergent channel, the tip port of export of convergent divergent channel dorsad, and inlet tube is positioned at the axle center of housing near the axis of straight length, convergent divergent channel and the deflection cone of the port of export; The intrinsic deflection blade installation is in the cavity that convergent divergent channel inwall and deflection cone outer wall surround, and the extrinsic deflection blade installation is in the cavity that convergent divergent channel outer wall and inner walls surround.
Described mash gas extraction blade spiral-flow type diluted mixture device; The caliber of housing and inlet tube is constant; Convergent divergent channel adopts the gradually big reducer pipe of internal diameter, and the expansion angle of convergent divergent channel is between 30 ° to 90 °, and the port of export sectional area of convergent divergent channel is between the 50%-80% of housing sectional area.
Described mash gas extraction blade spiral-flow type diluted mixture device, the axial distance between the elbow of inlet tube to the convergent divergent channel port of export is not less than 6 times of inlet tube caliber.
Described mash gas extraction blade spiral-flow type diluted mixture device, the axial distance between the port of export of convergent divergent channel and the housing port of export is not less than 2 times of housing caliber.
Described mash gas extraction blade spiral-flow type diluted mixture device; The intrinsic deflection blade is identical with the yawing moment of extrinsic deflection blade, and the intrinsic deflection root of blade is fixed on the deflection cone outer wall, and the top is fixed on the convergent divergent channel inwall; The extrinsic deflection root of blade is fixed on the convergent divergent channel outer wall, and the top is fixed on inner walls.
Described mash gas extraction blade spiral-flow type diluted mixture device, housing and upstream and downstream pipeline welding, inlet gas is air or ventilation air gas; Inlet tube arrival end and upstream line welding, inlet gas is a mash gas extraction.
The present invention compared with prior art, its advantage is:
1, inside and outside deflecting blade makes the inboard high concentration gas of convergent divergent channel outlet and the air or the coal mine methane gas in the outside that tangential swirl speed in the same way arranged; The centrifugal force that tangential rotation produces helps the high concentration gas of center is transported to periphery, air or the coal mine methane gas that makes the inboard mash gas extraction and the outside the very short time and apart from reach and mix.
2. this blender can be installed on the entrance pipe of air-introduced machine; Utilize pipeline negative pressure suction mash gas extraction; Convergent divergent channel makes pipe gas flow rate interior and that pipe is outer draw back gap simultaneously, and the mash gas extraction flow velocity in air outside the pipe or the coal mine methane gas flow rate ratio pipe is high, has ejector action to managing interior mash gas extraction; Reduce the conveying power consumption of mash gas extraction, reduced the cost of improvement on Ventilation System under the coal mine.
3, mash gas extraction is introduced from the pipeline center, and air or ventilation air gas are introduced from pipeline is peripheral, and near the gas density before mixing the wall is very low, has avoided the danger of high local concentrations methane gas and wall friction blast.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is that A embodiment illustrated in fig. 1 is to lateral view;
Fig. 3 is a B-B sectional view embodiment illustrated in fig. 1.
Among the figure: 1, housing 2, extrinsic deflection blade 3, intrinsic deflection blade 4, deflection cone 5, convergent divergent channel 6, inlet tube
The specific embodiment
In the embodiment shown in Fig. 1-3: the housing 1, gas induction tunnel, intrinsic deflection blade 3, extrinsic deflection blade 2 and the deflection cone 4 that comprise tubulose; The gas induction tunnel comprises inlet tube 6 and the convergent divergent channel 5 that is installed in inlet tube 6 ports of export; The caliber of its middle shell 1 and inlet tube 6 is constant; It is 60 ° that convergent divergent channel 5 adopts gradually big reducer pipe, the expansion angle of internal diameter; The port of export sectional area of convergent divergent channel 5 be housing 1 sectional area 65%, the axial distance between the port of export and housing 1 port of export is 3 times of housing 1 caliber; Inlet tube 6 is that the axial distance between 90 ° of bend pipes, elbow to convergent divergent channel 5 ports of export is 8 times of inlet tube 6 calibers; The arrival end of inlet tube 6 is arranged on outside the housing 1, and inlet tube 6 vertically penetrates in the housing 1, is horizontally set in the housing 1 near the straight length of the port of export near the straight length of arrival end, links to each other with convergent divergent channel 5 and towards the port of export of housing 1; Deflection cone 4 is a cone structure; Be positioned at convergent divergent channel 5, the tip port of export of convergent divergent channel 5 dorsad; Inlet tube 6 is positioned at the axle center of housing 1 near the axis of straight length, convergent divergent channel 5 and the deflection cone 4 of the port of export; Intrinsic deflection blade 3 is installed in the cavity that convergent divergent channel 5 inwalls and deflection cone 4 outer walls surround, and extrinsic deflection blade 2 is installed in the cavity that convergent divergent channel 5 outer walls and housing 1 inwall surround.
Claims (6)
1. mash gas extraction blade spiral-flow type diluted mixture device; The housing (1) and the gas induction tunnel that comprise tubulose; The gas induction tunnel comprises inlet tube (6) and is installed in the convergent divergent channel (5) of inlet tube (6) port of export; Wherein inlet tube (6) is that 90 ° of bend pipes, arrival ends are arranged on outside the housing (1); Inlet tube (6) vertically penetrates in the housing (1), is horizontally set in the housing (1) near the straight length of the port of export near the straight length of arrival end; Link to each other with convergent divergent channel (5) and towards the port of export of housing (1), it is characterized in that: set up intrinsic deflection blade (3), extrinsic deflection blade (2) and deflection cone (4), deflection cone (4) is a cone structure; Be positioned at convergent divergent channel (5), the tip port of export of convergent divergent channel (5) dorsad; Inlet tube (6) is positioned at the axle center of housing (1) near the axis of straight length, convergent divergent channel (5) and the deflection cone (4) of the port of export, and intrinsic deflection blade (3) is installed in the cavity that convergent divergent channel (5) inwall and deflection cone (4) outer wall surround, and extrinsic deflection blade (2) is installed in the cavity that convergent divergent channel (5) outer wall and housing (1) inwall surround.
2. mash gas extraction blade spiral-flow type diluted mixture device as claimed in claim 1; It is characterized in that: the caliber of housing (1) and inlet tube (6) is constant; Convergent divergent channel (5) adopts the gradually big reducer pipe of internal diameter; The expansion angle of convergent divergent channel (5) is between 30 ° to 90 °, and the port of export sectional area of convergent divergent channel (5) is between the 50%-80% of housing (1) sectional area.
3. mash gas extraction blade spiral-flow type diluted mixture device as claimed in claim 1 is characterized in that: the axial distance between elbow to convergent divergent channel (5) port of export of inlet tube (6) is not less than 6 times of inlet tube (6) caliber.
4. mash gas extraction blade spiral-flow type diluted mixture device as claimed in claim 1 is characterized in that: the axial distance between the port of export of convergent divergent channel (5) and housing (1) port of export is not less than 2 times of housing (1) caliber.
5. mash gas extraction blade spiral-flow type diluted mixture device as claimed in claim 1; It is characterized in that: intrinsic deflection blade (3) is identical with the yawing moment of extrinsic deflection blade (2); Intrinsic deflection blade (3) root is fixed on deflection cone (4) outer wall; The top is fixed on convergent divergent channel (5) inwall, and extrinsic deflection blade (2) root is fixed on convergent divergent channel (5) outer wall, and the top is fixed on housing (1) inwall.
6. mash gas extraction blade spiral-flow type diluted mixture device as claimed in claim 1 is characterized in that: housing (1) and upstream and downstream pipeline welding, and inlet gas is air or ventilation air gas; Inlet tube (6) arrival end and upstream line welding, inlet gas is a mash gas extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110243000 CN102337917B (en) | 2011-08-23 | 2011-08-23 | Blade swirl-type dilution mixer for gas drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110243000 CN102337917B (en) | 2011-08-23 | 2011-08-23 | Blade swirl-type dilution mixer for gas drainage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102337917A true CN102337917A (en) | 2012-02-01 |
| CN102337917B CN102337917B (en) | 2013-04-10 |
Family
ID=45513840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110243000 Expired - Fee Related CN102337917B (en) | 2011-08-23 | 2011-08-23 | Blade swirl-type dilution mixer for gas drainage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102337917B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032225A (en) * | 2015-09-02 | 2015-11-11 | 中冶华天工程技术有限公司 | Rotational flow mixing device |
| CN106401639A (en) * | 2016-04-13 | 2017-02-15 | 山东理工大学 | Electric control regulating type air intake and exhaust diversion system for ventilation air methane thermal flow-reversal oxidation device |
| CN107435554A (en) * | 2017-07-20 | 2017-12-05 | 山西文龙中美环能科技股份有限公司 | Gas blends system and gas blending concentration control method |
| CN110500325A (en) * | 2019-08-28 | 2019-11-26 | 郑州釜鼎热能技术有限公司 | A kind of Ejector using annular swirl injection |
| CN112324488A (en) * | 2020-10-30 | 2021-02-05 | 中国平煤神马能源化工集团有限责任公司 | System for preparing saturated steam by low-gas high-temperature heat storage oxidation of coal mine |
| CN117046339A (en) * | 2023-10-13 | 2023-11-14 | 山西和运能源服务有限公司 | Intelligent mixing and utilizing device for high-low negative pressure gas of coal mine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004022918A1 (en) * | 2002-09-06 | 2004-03-18 | Hyder Consulting Pty Limited | Tunnel exhaust air treatment |
| CN101725367A (en) * | 2008-10-24 | 2010-06-09 | 中国科学院工程热物理研究所 | Ventilation air inlet rectifier of mine ventilation gas processing device |
| CN101936178A (en) * | 2010-09-07 | 2011-01-05 | 山东理工大学 | Mixer of coal mine extracted gas and ventilation gas |
| CN202187795U (en) * | 2011-08-23 | 2012-04-11 | 山东理工大学 | Blade spiral-flow type dilution mixer for gas drainage |
-
2011
- 2011-08-23 CN CN 201110243000 patent/CN102337917B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004022918A1 (en) * | 2002-09-06 | 2004-03-18 | Hyder Consulting Pty Limited | Tunnel exhaust air treatment |
| CN101725367A (en) * | 2008-10-24 | 2010-06-09 | 中国科学院工程热物理研究所 | Ventilation air inlet rectifier of mine ventilation gas processing device |
| CN101936178A (en) * | 2010-09-07 | 2011-01-05 | 山东理工大学 | Mixer of coal mine extracted gas and ventilation gas |
| CN202187795U (en) * | 2011-08-23 | 2012-04-11 | 山东理工大学 | Blade spiral-flow type dilution mixer for gas drainage |
Non-Patent Citations (1)
| Title |
|---|
| 邓全封: "瓦斯稀释筒", 《煤矿安全》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032225A (en) * | 2015-09-02 | 2015-11-11 | 中冶华天工程技术有限公司 | Rotational flow mixing device |
| CN105032225B (en) * | 2015-09-02 | 2017-10-03 | 中冶华天工程技术有限公司 | Rotational flow mixing device |
| CN106401639A (en) * | 2016-04-13 | 2017-02-15 | 山东理工大学 | Electric control regulating type air intake and exhaust diversion system for ventilation air methane thermal flow-reversal oxidation device |
| CN107435554A (en) * | 2017-07-20 | 2017-12-05 | 山西文龙中美环能科技股份有限公司 | Gas blends system and gas blending concentration control method |
| CN110500325A (en) * | 2019-08-28 | 2019-11-26 | 郑州釜鼎热能技术有限公司 | A kind of Ejector using annular swirl injection |
| CN112324488A (en) * | 2020-10-30 | 2021-02-05 | 中国平煤神马能源化工集团有限责任公司 | System for preparing saturated steam by low-gas high-temperature heat storage oxidation of coal mine |
| CN117046339A (en) * | 2023-10-13 | 2023-11-14 | 山西和运能源服务有限公司 | Intelligent mixing and utilizing device for high-low negative pressure gas of coal mine |
| CN117046339B (en) * | 2023-10-13 | 2023-12-15 | 山西和运能源服务有限公司 | Intelligent mixing and utilizing device for high-low negative pressure gas of coal mine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102337917B (en) | 2013-04-10 |
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Granted publication date: 20130410 |