CN102434191B - Spiral-flow type dilution mixer with adjustable blades for gas drainage - Google Patents
Spiral-flow type dilution mixer with adjustable blades for gas drainage Download PDFInfo
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- CN102434191B CN102434191B CN201110243176.6A CN201110243176A CN102434191B CN 102434191 B CN102434191 B CN 102434191B CN 201110243176 A CN201110243176 A CN 201110243176A CN 102434191 B CN102434191 B CN 102434191B
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- housing
- divergent channel
- convergent divergent
- flow type
- inlet tube
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- 238000010790 dilution Methods 0.000 title abstract 4
- 239000012895 dilution Substances 0.000 title abstract 4
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000000605 extraction Methods 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 65
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 42
- 230000003647 oxidation Effects 0.000 description 14
- 238000007254 oxidation reaction Methods 0.000 description 14
- 239000003245 coal Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency 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
- 230000006872 improvement Effects 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 spiral-flow type dilution mixer with adjustable blades for gas drainage. The spiral-flow type dilution mixer comprises a tubular shell, an inlet pipe and an expansion pipe and is characterized in that a diverting cone, inward deflection blades, outward deflection blades, a blade adjusting mechanism and a support are additionally arranged, wherein the diverting cone is arranged in the expansion pipe; the inward deflection blades are arranged in a cavity between the inner wall of the expansion pipe and the outer wall of the diverting cone, and the outward deflection blades are arranged in a cavity between the outer wall of the expansion pipe and the inner wall of the shell; and in the blade adjusting mechanism, one end of an inward rotation shaft is arranged outside the shell, the other end of the inward rotation shaft is attached onto the outer wall of the diverting cone, the inward deflection blades are fixed on the inward rotation shaft, one end of the inward rotation shaft is fixedly provided with a driven gear of a bevel gear set, a drive gear in the bevel gear set is fixed on one end of an outward transmission shaft which is arranged on the support, an outer gear is fixed on the outward transmission shaft, and an outer adjusting handle is arranged on an outer gear ring meshed with the outer gear, of the outer gear. The spiral-flow type dilution mixer disclosed by the invention has the advantages of simple structure, uniformity in mixing, safety for protection, and low energy consumption for transmitting drained gas.
Description
Technical field
The present invention relates to the air feed equipment of coal mine methane gas oxidation device, be particularly related to a kind of mash gas extraction of coal mine methane gas oxidation device and the blade spiral-flow type diluted mixture device of ventilation air gas or air, 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 be subjected to effective control.The annual mash gas extraction of China is about billion cubic meter more than 50.Wherein the mash gas extraction of Li Yonging 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 enter 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 adjustable vane 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 enter 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 of the gas induction tunnel of the complex structure of blender and its uniform aperture can bring very big flow resistance, increases the energy consumption that transports gas.In addition, yet there are no all fairly perfect gas diluted mixture devices of structure and performance.
Summary of the invention
The objective of the invention is to remedy the deficiency of existing coal mine methane gas oxidation device supply technology, the adjustable vane spiral-flow type diluted mixture device of a kind of mash gas extraction and ventilation air gas or air is provided, mash gas extraction is evenly mixed with ventilation air gas or air and be reduced to safe concentration, carry out the oxidation utilization in order to send into coal mine methane gas oxidation device.Its technical scheme is:
A kind of mash gas extraction adjustable vane spiral-flow type diluted mixture device, the housing and the gas induction tunnel that comprise tubulose, the gas induction tunnel comprises inlet tube and is installed in the convergent divergent channel of the inlet tube port of export, wherein inlet tube is 90 ° of bend pipes, arrival end is arranged on outside the housing, inlet tube vertically penetrates in the housing near the straight length of arrival end, straight length near the port of export is horizontally set in the housing, link to each other with convergent divergent channel and towards the port of export of housing, it is characterized in that: set up deflection cone, the intrinsic deflection blade, the extrinsic deflection blade, propeller regulating mechanism and support, wherein deflection cone is positioned at convergent divergent channel, be cone structure, its tip is the port of export of convergent divergent channel dorsad, inlet tube is near the straight length of the port of export, the axis of convergent divergent channel and deflection cone is positioned at the axle center of housing, the intrinsic deflection blade is installed in the cavity that convergent divergent channel inwall and deflection cone outer wall surround, and the extrinsic deflection blade is installed in the cavity that convergent divergent channel outer wall and inner walls surround; Propeller regulating mechanism comprises axis of rotation, bevel gear set, power transmission shaft, gear, gear ring, regulating handle and ratchet mechanism, wherein axis of rotation is a plurality of, radial arrangement along housing, one end is positioned at outside the housing, housing and convergent divergent channel are passed in other end gap, conflict is on the outer wall of deflection cone, intrinsic deflection blade and extrinsic deflection blade are fixed on the axis of rotation near the trailing edge of housing outlet, each axis of rotation is arranged in the driven gear that the outer end of housing fixedly has bevel gear set, power transmission shaft is rack-mount through the bearing level, one end is fixedlyed connected with the driving gear in the bevel gear set, fixedly have on the power transmission shaft and the gear ring meshed gears, gear ring is provided with regulating handle, the ratchet of ratchet mechanism is fixed on the power transmission shaft, and ratchet is fixed on the support.
Described mash gas extraction adjustable vane spiral-flow type diluted mixture device, the caliber of housing and inlet tube is constant, convergent divergent channel adopts internal diameter, and gradually big reducer pipe, expansion angle are between 30 ° to 90 °, and the discharge area of convergent divergent channel is between the 50%-80% of housing sectional area.
Described mash gas extraction adjustable vane spiral-flow type diluted mixture device, the elbow of inlet tube is not less than 6 times of inlet tube caliber to the axial overall length between the convergent divergent channel port of export.
Described mash gas extraction adjustable vane spiral-flow type diluted mixture device, the axial distance between the outlet of convergent divergent channel and the housing port of export should be not less than 2 times of housing caliber.
Described mash gas extraction adjustable vane spiral-flow type diluted mixture device, one end of intrinsic deflection blade and extrinsic deflection blade and axis of rotation welding are fixing, intrinsic deflection blade and extrinsic deflection blade are pressed close to the position of tube wall and are left the slit, can rotate synchronously with axis of rotation, and rotational angle is controlled in 60 °.
Described mash gas extraction adjustable vane spiral-flow type diluted mixture device, housing and upstream and downstream pipeline welding, inlet gas is air or ventilation air gas, inlet tube entrance and upstream line welding, inlet gas is mash gas extraction.
The present invention compared with prior art, its advantage is:
1, inside and outside deflecting blade makes the air in the inboard high concentration gas of convergent divergent channel outlet and the outside or coal mine methane gas that in the same way tangential swirl speed be arranged, the centrifugal force that tangential rotation produces helps the high concentration gas of center is transported to periphery, the air in inboard mash gas extraction and the outside or coal mine methane gas is reached in very short time and distance mix.The deflection angle of inside and outside deflecting blade can freely be adjusted, and the swirl strength of control convergent divergent channel outlet medial and lateral air-flow has excellent adaptability to different charge flow rates.
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, the air that pipe is outer or coal mine methane gas flow rate are than the mash gas extraction flow velocity height in the pipe, mash gas extraction in managing had ejector action, 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 B-B sectional view embodiment illustrated in fig. 1.
Fig. 4 is the structural representation of middle ratchet mechanism 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 7, axis of rotation 8, bevel gear set 9, regulating handle 10, gear ring 11, gear 12, ratchet mechanism 13, power transmission shaft 14, support
The specific embodiment
In the embodiment shown in Fig. 1-3: the housing 1, gas induction tunnel, deflection cone 4, intrinsic deflection blade 3, extrinsic deflection blade 2, propeller regulating mechanism and the support 14 that comprise tubulose, the gas induction tunnel comprises inlet tube 6 and is installed in the convergent divergent channel 5 of inlet tube 6 ports 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 ends, links to each other with convergent divergent channel 5 and towards the port of export of housing 1; Wherein deflection cone 4 is positioned at convergent divergent channel 5, be cone structure, its tip is the 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; Propeller regulating mechanism comprises axis of rotation 7, bevel gear set 8, power transmission shaft 13, gear 11, gear ring 10, regulating handle 9 and ratchet mechanism 12, wherein axis of rotation 7 is a plurality of, radial arrangement along housing 1, one end is positioned at outside the housing 1, housing 1 and convergent divergent channel 5 are passed in other end gap, conflict is on the outer wall of deflection cone 4, intrinsic deflection blade 3 and extrinsic deflection blade 2 are fixed on the axis of rotation 7 near the trailing edge of housing 1 outlet, each axis of rotation 7 is arranged in the driven gear that housing 1 an outer end fixedly has bevel gear set 8, power transmission shaft 13 is installed on the support 14 through the bearing level, one end is fixedlyed connected with the driving gear in the bevel gear set 8, fixedly have on the power transmission shaft 13 and gear ring 10 meshed gears 11, gear ring 10 is provided with regulating handle 9, the ratchet of ratchet mechanism 12 is fixed on the power transmission shaft 13, and ratchet is fixed on the support 14.
The caliber of housing 1 and inlet tube 6 is constant, convergent divergent channel 5 adopt internal diameters gradually big reducer pipe, expansion angle be 60 °, the discharge area of convergent divergent channel 5 is 65% of housing 1 sectional areas; The elbow of inlet tube 6 is 8 times of inlet tube 6 calibers to the axial overall length between convergent divergent channel 5 ports of export; Axial distance between the outlet of convergent divergent channel 5 and housing 1 port of export is 3 times of housing 1 caliber.
One end of intrinsic deflection blade 3 and extrinsic deflection blade 2 and axis of rotation 7 welding are fixing, and intrinsic deflection blade 3 and extrinsic deflection blade 2 are pressed close to the position of tube wall and left the slit, can rotate synchronously with axis of rotation 7, and rotational angle is controlled at 45 °.
Claims (6)
1. mash gas extraction adjustable vane 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 90 ° of bend pipes, arrival end is arranged on outside the housing (1), inlet tube (6) vertically penetrates in the housing (1) near the straight length of arrival end, straight length near the port of export is horizontally set in the housing (1), 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 deflection cone (4), intrinsic deflection blade (3), extrinsic deflection blade (2), propeller regulating mechanism and support (14), wherein deflection cone (4) is positioned at convergent divergent channel (5), be cone structure, its tip is the port of export of convergent divergent channel (5) dorsad, inlet tube (6) is near the straight length of the port of export, the axis of convergent divergent channel (5) and deflection cone (4) is positioned at the axle center of housing (1), 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; Propeller regulating mechanism comprises axis of rotation (7), bevel gear set (8), power transmission shaft (13), gear (11), gear ring (10), regulating handle (9) and ratchet mechanism (12), wherein axis of rotation (7) is a plurality of, radial arrangement along housing (1), one end is positioned at outside the housing (1), housing (1) and convergent divergent channel (5) are passed in other end gap, conflict is on the outer wall of deflection cone (4), intrinsic deflection blade (3) and extrinsic deflection blade (2) are fixed on the axis of rotation (7) near the trailing edge of housing (1) outlet, each axis of rotation (7) is arranged in the driven gear that the outer end of housing (1) fixedly has bevel gear set (8), power transmission shaft (13) is installed on the support (14) through the bearing level, one end is fixedlyed connected with the driving gear in the bevel gear set (8), power transmission shaft (13) is gone up fixedly to be had and gear ring (10) meshed gears (11), gear ring (10) is provided with regulating handle (9), the ratchet of ratchet mechanism (12) is fixed on the power transmission shaft (13), and ratchet is fixed on the support (14).
2. mash gas extraction adjustable vane 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 internal diameter, and gradually big reducer pipe, expansion angle are between 30 ° to 90 °, and the discharge area of convergent divergent channel (5) is between the 50%-80% of housing (1) sectional area.
3. mash gas extraction adjustable vane spiral-flow type diluted mixture device as claimed in claim 1, it is characterized in that: the elbow of inlet tube (6) is not less than 6 times of inlet tube (6) caliber to the axial overall length between convergent divergent channel (5) port of export.
4. mash gas extraction adjustable vane spiral-flow type diluted mixture device as claimed in claim 1, it is characterized in that: the axial distance between the outlet of convergent divergent channel (5) and housing (1) port of export should be not less than 2 times of housing (1) caliber.
5. mash gas extraction adjustable vane spiral-flow type diluted mixture device as claimed in claim 1, it is characterized in that: an end of intrinsic deflection blade (3) and extrinsic deflection blade (2) and axis of rotation (7) welding are fixing, all leave the slit between the outside wall surface of the internal face of intrinsic deflection blade (3) and convergent divergent channel (5) and deflection cone (4), all leave the slit between the internal face of the outside wall surface of extrinsic deflection blade (2) and convergent divergent channel (5) and housing (1), intrinsic deflection blade (3) and extrinsic deflection blade (2) all can be with axis of rotation (7) rotations synchronously, and rotational angle is controlled in 60 °.
6. mash gas extraction adjustable vane spiral-flow type diluted mixture device as claimed in claim 1, it is characterized in that: housing (1) and upstream and downstream pipeline welding, inlet gas is air or ventilation air gas, inlet tube (6) entrance and upstream line welding, and inlet gas is mash gas extraction.
Priority Applications (1)
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CN201110243176.6A CN102434191B (en) | 2011-08-23 | 2011-08-23 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
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CN201110243176.6A CN102434191B (en) | 2011-08-23 | 2011-08-23 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
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CN102434191A CN102434191A (en) | 2012-05-02 |
CN102434191B true CN102434191B (en) | 2013-09-18 |
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CN103801238B (en) * | 2014-01-22 | 2016-03-02 | 浙江大学 | A kind of bispin gas gas fast-mixing reactor |
CN110578550B (en) * | 2019-10-15 | 2020-11-03 | 中国矿业大学 | Intelligent auxiliary power device for improving gas extraction concentration and working method |
CN113277686A (en) * | 2021-06-22 | 2021-08-20 | 南京必蓝环境技术有限公司 | Device and method suitable for in-situ remediation of black and odorous water body |
CN114810195B (en) * | 2022-05-06 | 2022-09-09 | 山东省煤田地质规划勘察研究院 | Coal seam gas release device and coal seam tunneling device |
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2063443U (en) * | 1989-05-24 | 1990-10-10 | 哈尔滨建筑工程学院 | Forcing aid for dump machinery of mixer with single horizontal shaft |
CN201763375U (en) * | 2010-09-07 | 2011-03-16 | 山东理工大学 | Device for mixing coal mine drained methane and ventilation air methane |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001079523A (en) * | 1999-09-10 | 2001-03-27 | Iseki & Co Ltd | Garbage treating device |
JP2004290712A (en) * | 2001-09-25 | 2004-10-21 | Moburon Sekkei Jimusho:Kk | Water stream generator due to fluctuation of volume body |
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2011
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2063443U (en) * | 1989-05-24 | 1990-10-10 | 哈尔滨建筑工程学院 | Forcing aid for dump machinery of mixer with single horizontal shaft |
CN201763375U (en) * | 2010-09-07 | 2011-03-16 | 山东理工大学 | Device for mixing coal mine drained methane and ventilation air methane |
Non-Patent Citations (1)
Title |
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JP特开2001-79523A 2001.03.27 |
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