CN202187795U - Blade spiral-flow type dilution mixer for gas drainage - Google Patents
Blade spiral-flow type dilution mixer for gas drainage Download PDFInfo
- Publication number
- CN202187795U CN202187795U CN2011203088656U CN201120308865U CN202187795U CN 202187795 U CN202187795 U CN 202187795U CN 2011203088656 U CN2011203088656 U CN 2011203088656U CN 201120308865 U CN201120308865 U CN 201120308865U CN 202187795 U CN202187795 U CN 202187795U
- Authority
- CN
- China
- Prior art keywords
- housing
- blade
- divergent channel
- convergent divergent
- export
- 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- Withdrawn - After Issue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
Images
Abstract
The utility model relates to a blade spiral-flow type dilution mixer for gas drainage, which comprises a tubular casing and a gas injection pipe. The gas injection pipe comprises an inlet pipe and an expanding pipe arranged at the outlet end of the inlet pipe, the inlet pipe is a 90-degree bending pipe, the inlet end is arranged outside the casing, the straight pipe section of the inlet end close to the inlet pipe perpendicularly penetrates in the casing, and the straight pipe section close to the outlet end is horizontally arranged in the casing to be connected with the expanding pipe and towards the outlet end of the casing. The blade spiral-flow type dilution mixer is characterized by adding an inner deflection blade, an outer deflection blade and a flow guiding cone, the flow guiding cone is in a shape of a cone and located in the expanding pipe, the pointed end of the flow guiding cone is back to the outlet end of the expanding pipe, axes of the straight pipe section close to the outlet end, the expanding pipe and the flow guiding cone is located at the axis of the casing, the inner deflection blade is installed in a cavity surrounded between the inner wall of the expanding pipe and the outer wall of the flow guiding cone, the outer deflection blade is installed in a cavity surrounded between the outer wall of the expanding pipe and the inner wall of the casing. The blade spiral-flow type dilution mixer is simple in structure, even in mixing and low in energy consumption for drainage gas delivery.
Description
Technical field
The utility model 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.
The utility model content
The purpose of the utility model provides 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 utility model 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 utility model embodiment;
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 |
|---|---|---|---|
| CN2011203088656U CN202187795U (en) | 2011-08-23 | 2011-08-23 | Blade spiral-flow type dilution mixer for gas drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203088656U CN202187795U (en) | 2011-08-23 | 2011-08-23 | Blade spiral-flow type dilution mixer for gas drainage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202187795U true CN202187795U (en) | 2012-04-11 |
Family
ID=45919254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203088656U Withdrawn - After Issue CN202187795U (en) | 2011-08-23 | 2011-08-23 | Blade spiral-flow type dilution mixer for gas drainage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202187795U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337917A (en) * | 2011-08-23 | 2012-02-01 | 山东理工大学 | Blade swirl-type dilution mixer for gas drainage |
| CN108035767A (en) * | 2018-01-04 | 2018-05-15 | 山西正大恒通科技有限公司 | Coal mine gas injecting system and for flow type pump with injection device therein |
-
2011
- 2011-08-23 CN CN2011203088656U patent/CN202187795U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337917A (en) * | 2011-08-23 | 2012-02-01 | 山东理工大学 | Blade swirl-type dilution mixer for gas drainage |
| CN102337917B (en) * | 2011-08-23 | 2013-04-10 | 山东理工大学 | Blade swirl-type dilution mixer for gas drainage |
| CN108035767A (en) * | 2018-01-04 | 2018-05-15 | 山西正大恒通科技有限公司 | Coal mine gas injecting system and for flow type pump with injection device therein |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102337917B (en) | Blade swirl-type dilution mixer for gas drainage | |
| CN102434191B (en) | Spiral-flow type dilution mixer with adjustable blades for gas drainage | |
| CN202017516U (en) | Fireproof extinguishing foam generator for mining | |
| CN104632216B (en) | Bulb apparatus are produced in the self-priming short distance reinforcing of rotating jet for coal-winning machine dust suppression | |
| CN1287905C (en) | Injector of gas and solid transported through gas | |
| CN102278135B (en) | Vortex type extracted gas dilution mixer for coal mine | |
| CN202187795U (en) | Blade spiral-flow type dilution mixer for gas drainage | |
| CN101936178B (en) | Mixer of coal mine extracted gas and ventilation gas | |
| CN105664747B (en) | A kind of static mixer for urea seeding hydrolysis | |
| CN202187794U (en) | Gas drainage diluting and mixing demister | |
| CN102322287B (en) | Gas drainage, dilution and mixing demister | |
| CN204159238U (en) | Double-deck jet powder body mixing arrangement | |
| CN203635048U (en) | Guide device for ventilation air methane oxidation | |
| CN203886437U (en) | High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device | |
| CN201763375U (en) | Device for mixing coal mine drained methane and ventilation air methane | |
| CN201103404Y (en) | High-pressure water gas jet current secondary rotating ventilator | |
| CN102337918B (en) | Twin-stage adjustable blade spiral-flow type dilution mixer for gas drainage | |
| CN202176360U (en) | Rotary flow type gas drainage dilution mixer for coal mines | |
| CN201183035Y (en) | Injection apparatus for low-voltage natural gas production and transportation | |
| CN201650343U (en) | Low-density methane gas mixture conveying system for methane gas oxidation device | |
| CN202581331U (en) | Gas combustion burner | |
| CN203448004U (en) | Gas mixing device suitable for low pressure gases | |
| CN105966921A (en) | Material issuing device for powdered solid and gas conveying | |
| CN205867961U (en) | Improved generation ammonia air mixer | |
| CN202402110U (en) | Spiral AdBlue mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120411 Effective date of abandoning: 20130410 |
|
| RGAV | Abandon patent right to avoid regrant |