CN102434191A - 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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- CN102434191A CN102434191A CN2011102431766A CN201110243176A CN102434191A CN 102434191 A CN102434191 A CN 102434191A CN 2011102431766 A CN2011102431766 A CN 2011102431766A CN 201110243176 A CN201110243176 A CN 201110243176A CN 102434191 A CN102434191 A CN 102434191A
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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 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 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 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 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 mixed with ventilation air gas or even air and is reduced to safe concentration, carry out the oxidation utilization so that 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, and 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; 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, intrinsic deflection blade, extrinsic deflection blade, propeller regulating mechanism and support, wherein deflection cone is positioned at convergent divergent channel, is cone structure; Its tip is the port of export of convergent divergent channel dorsad; 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, and 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; Propeller regulating mechanism comprises axis of rotation, bevel gear set, power transmission shaft, gear, gear ring, regulating handle and ratchet mechanism, and wherein axis of rotation is a plurality of, along the radial arrangement of housing; One end is positioned at outside the housing; Pass housing and convergent divergent channel, conflict on the outer wall of deflection cone in other end gap, intrinsic deflection blade and extrinsic deflection blade are fixed on the axis of rotation near the trailing edge of housing outlet, and each axis of rotation is arranged in the driven gear that the outer end of housing is fixed with bevel gear set; Power transmission shaft is rack-mount through the bearing level; One end is fixedly connected with driving gear in the bevel gear set, is fixed with on the power transmission shaft and the gear ring meshed gears, and 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 the gradually big reducer pipe of internal diameter, expansion angle 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 axial overall length 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 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 inlet 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.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, 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.
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 the convergent divergent channel 5 that is installed in 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 end, 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, and 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, and wherein axis of rotation 7 is a plurality of, along the radial arrangement of housing 1; One end is positioned at outside the housing 1; Pass housing 1 and convergent divergent channel 5, conflict on the outer wall of deflection cone 4 in other end gap, intrinsic deflection blade 3 is fixed on the axis of rotation 7 with the trailing edge of extrinsic deflection blade 2 near housing 1 outlet, and each axis of rotation 7 is arranged in the driven gear that housing 1 an outer end is fixed with bevel gear set 8; Power transmission shaft 13 is installed on the support 14 through the bearing level; One end is fixedly connected with driving gear in the bevel gear set 8, is fixed with on the power transmission shaft 13 and gear ring 10 meshed gears 11, and 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, and it is 60 ° that convergent divergent channel 5 adopts gradually big reducer pipe, the expansion angle of internal diameter, and the discharge area of convergent divergent channel 5 is 65% of housing 1 sectional areas; Axial overall length between the elbow of inlet tube 6 to convergent divergent channel 5 ports of export is 8 times of inlet tube 6 calibers; 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 leaves the slit with the position that extrinsic deflection blade 2 is pressed close to tube wall, 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 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, links 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, and 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) 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; Along the radial arrangement of housing (1), an end is positioned at outside the housing (1), and other end gap is passed housing (1) and convergent divergent channel (5), conflicted 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) is fixed with bevel gear set (8), and power transmission shaft (13) is installed on the support (14) through the bearing level, and an end is fixedly connected with driving gear in the bevel gear set (8); Be fixed with on the power transmission shaft (13) and gear ring (10) meshed gears (11); Gear ring (10) is provided with regulating handle (9), and 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 the gradually big reducer pipe of internal diameter, expansion angle 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 is characterized in that: the axial overall length 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 adjustable vane spiral-flow type diluted mixture device as claimed in claim 1 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; Intrinsic deflection blade (3) and extrinsic deflection blade (2) are pressed close to the position of tube wall and are left the slit; Can be with axis of rotation (7) rotation synchronously, 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) inlet and upstream line welding, and inlet gas is a mash gas extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110243176.6A CN102434191B (en) | 2011-08-23 | 2011-08-23 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN102434191A true CN102434191A (en) | 2012-05-02 |
| CN102434191B CN102434191B (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110243176.6A Active CN102434191B (en) | 2011-08-23 | 2011-08-23 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801238A (en) * | 2014-01-22 | 2014-05-21 | 浙江大学 | Double-rotational flow gas-gas rapid mixing reactor |
| CN110578550A (en) * | 2019-10-15 | 2019-12-17 | 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 |
| CN114810195A (en) * | 2022-05-06 | 2022-07-29 | 山东省煤田地质规划勘察研究院 | Coal seam gas release device and coal seam tunneling device |
| 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 |
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| 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 |
| JP2001079523A (en) * | 1999-09-10 | 2001-03-27 | Iseki & Co Ltd | Garbage treating device |
| WO2003026783A1 (en) * | 2001-09-25 | 2003-04-03 | Moburon Design Office Co., Ltd. | Liquid current generating device |
| 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 |
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2011
- 2011-08-23 CN CN201110243176.6A patent/CN102434191B/en active Active
Patent Citations (4)
| 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 |
| JP2001079523A (en) * | 1999-09-10 | 2001-03-27 | Iseki & Co Ltd | Garbage treating device |
| WO2003026783A1 (en) * | 2001-09-25 | 2003-04-03 | Moburon Design Office Co., Ltd. | Liquid current generating device |
| 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801238A (en) * | 2014-01-22 | 2014-05-21 | 浙江大学 | Double-rotational flow gas-gas rapid mixing reactor |
| CN110578550A (en) * | 2019-10-15 | 2019-12-17 | 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 |
| CN114810195A (en) * | 2022-05-06 | 2022-07-29 | 山东省煤田地质规划勘察研究院 | Coal seam gas release device and coal seam tunneling device |
| 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 |
| 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 |
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| CN102434191B (en) | 2013-09-18 |
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