CN201763375U - Device for mixing coal mine drained methane and ventilation air methane - Google Patents
Device for mixing coal mine drained methane and ventilation air methane Download PDFInfo
- Publication number
- CN201763375U CN201763375U CN2010205194161U CN201020519416U CN201763375U CN 201763375 U CN201763375 U CN 201763375U CN 2010205194161 U CN2010205194161 U CN 2010205194161U CN 201020519416 U CN201020519416 U CN 201020519416U CN 201763375 U CN201763375 U CN 201763375U
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- housing
- tail pipe
- pipe
- methane
- inlet tube
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Abstract
The utility model relates to a device for mixing coal mine drained methane and ventilation air methane. The device is characterized in that the device comprises a tubular casing, a methane ejecting pipe and a fairing, two ends of the casing are provided with a flange, the methane ejecting pipe is formed by successively connecting an inlet flange, an inlet pipe, an expansion pipe and a conical tail pipe, an inlet end of the inlet pipe is disposed at the external of the casing, the rest of the inlet pipe is arranged in the casing and faces an outlet of the casing, the end of the conical tail pipe adopts the circular arc transition, the wall surface of the conical tail pipe is provided with small holes which are uniformly distributed, a plurality of reinforced ribs are arranged between the transition pipe and the casing, the conical tail pipe is disposed in the casing and at the rear side of the reinforced ribs in a surrounding manner, and the end of the fairing provided is adjacent to the outlet of the casing. The device of the utility model has the advantages of uniform mixing and low energy consumption for conveying the drained methane and so on.
Description
Technical field
The utility model relates to the air feed equipment of coal mine methane gas oxidation device, and particularly the blender of a kind of mash gas extraction of coal mine methane gas oxidation device and ventilation air gas belongs to super low concentration methane thermal counter flow oxidation and low-density technical field of energy recovery.
Background technology
In recent years, 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 6% low concentration mash gas extraction and can't carries out civilian or generating utilizes, and has only emptying.This has not only polluted atmospheric environment, has also caused the waste of non-renewable money.If mash gas extraction is mixed with coal mine wind-lack gas, send into together and carry out the oxidation utilization in the coal mine methane gas oxidation device, just can make full use of existing resource, realize simultaneously reducing discharging.
Will be in order to guarantee that coal mine methane gas oxidation device safe operation requirement enters the methane gas concentration of oxidation unit oxidation bed well below the explosion limit of gas, in general be less than 1.5%, local overrich phenomenon can not occur, this uniformity of just mash gas extraction being mixed with coal mine wind-lack gas has proposed strict requirement.Because the disposal ability of every cover coal mine methane oxidation unit does not also have the special-purpose mash gas extraction and the blender of ventilation air gas at present generally at tens thousand of cubic metres/hours.
The utility model content
The purpose of this utility model will overcome above-mentioned the deficiencies in the prior art exactly, a kind of mash gas extraction of coal mine methane gas oxidation device and the blender of ventilation air gas are provided, mash gas extraction is evenly mixed with ventilation air gas, carry out the oxidation utilization so that send into coal mine methane gas oxidation device together.
The purpose of this utility model is realized by following technical proposals:
The blender of a kind of mash gas extraction and ventilation air gas, it is characterized in that: the housing, gas induction tunnel and the radome fairing that comprise tubulose, the two ends of its middle shell are provided with flange, the gas induction tunnel is connected in turn by inlet flange, inlet tube, convergent divergent channel, transition conduit and circular cone tail pipe, wherein the arrival end of inlet tube is arranged on outside the housing, all the other are arranged in the housing and towards the outlet of housing, the terminal arc transition that adopts of circular cone tail pipe, be evenly equipped with aperture on the wall of circular cone tail pipe, between transition conduit and housing, be provided with a plurality of reinforcing ribs; In housing, the rear of reinforcing rib is provided with radome fairing around the circular cone tail pipe, the end of radome fairing is near the outlet of housing.
The blender of described mash gas extraction and ventilation air gas, inlet tube are bent into 90 °, and the front end straight length of inlet tube penetrates housing, and the axis of the terminal straight length of inlet tube, convergent divergent channel, transition conduit and circular cone tail pipe is positioned at the center of housing.
The blender of described mash gas extraction and ventilation air gas, transition conduit adopts straight tube, and convergent divergent channel adopts the gradually big reducer pipe of internal diameter.
The blender of described mash gas extraction and ventilation air gas, the terminal flow development length of inlet tube is not less than 10 times of inlet tube diameter.
The blender of described mash gas extraction and ventilation air gas, the coning angle of circular cone tail pipe are 45 °～90 °.
The utility model compared with prior art, major advantage and beneficial effect are:
1, coal mine methane gas is out-of-date in the expansion segment outer flow from the gas induction tunnel, because circulation area reduces gradually, its flow velocity can raise gradually; When flowing through the circular cone tail pipe, radome fairing further reduces circulation area, thereby weary general mood rate of flow of fluid further increases.Mash gas extraction flows out from the aperture on the circular cone tail pipe wall, mixes with swiftly flowing weary general mood body, and mixing uniformity is better, reaches in a short period of time to mix.
2, the gas total head in the weary wind conveyance conduit of coal mine methane gas oxidation device is very high, generally greater than 4000Pa.Weary general mood body has ejector action to mash gas extraction when flowing through circular cone tail pipe external surface, thereby has reduced the pressure head and the energy consumption of carrying mash gas extraction.
Description of drawings
Fig. 1 be the utility model embodiment structural representation.
Fig. 2 is an A-A sectional view embodiment illustrated in fig. 1.
Fig. 3 is a B-B sectional view embodiment illustrated in fig. 1.
Among the figure: 1, housing 2, radome fairing 3, circular cone tail pipe 4, reinforcing rib 5, transition conduit 6, convergent divergent channel 7, inlet tube 8, inlet flange 9, aperture 10, flange
The specific embodiment
In the embodiment shown in Fig. 1～3: the two ends of housing 1 are provided with flange 10, the gas induction tunnel is connected in turn by inlet flange 8, inlet tube 7, convergent divergent channel 6, transition conduit 5 and circular cone tail pipe 3, wherein inlet tube 7 is bent into 90 °, arrival end is arranged on outside the housing 1, the front end straight length of inlet tube 7 penetrates housing 1, and all the other are arranged in the housing 1 and towards the outlet of housing 1; The axis of the terminal straight length of inlet tube 7, convergent divergent channel 6, transition conduit 5 and circular cone tail pipe 3 is positioned at the center of housing 1, and the terminal flow development length of inlet tube 7 is not less than 10 times of inlet tube 7 diameters; Be evenly equipped with aperture 9 on the wall of circular cone tail pipe 3, the terminal arc transition that adopts, coning angle is 45 °～90 °; Transition conduit 5 adopts straight tube, and convergent divergent channel 6 adopts the gradually big reducer pipe of internal diameter, is provided with a plurality of reinforcing ribs 4 between transition conduit 5 and housing 1; In housing 1, the rear of reinforcing rib 4 is provided with radome fairing 2 around circular cone tail pipe 3, the end of radome fairing 2 is near the outlet of housing 1.
Claims (5)
1. the blender of mash gas extraction and ventilation air gas, it is characterized in that: the housing (1) that comprises tubulose, gas induction tunnel and radome fairing (2), the two ends of its middle shell (1) are provided with flange (10), the gas induction tunnel is by inlet flange (8), inlet tube (7), convergent divergent channel (6), transition conduit (5) and circular cone tail pipe (3) are connected in turn, wherein the arrival end of inlet tube (7) is arranged on outside the housing (1), all the other are arranged in the housing (1) and towards the outlet of housing (1), the terminal arc transition that adopts of circular cone tail pipe (3), be evenly equipped with aperture (9) on the wall of circular cone tail pipe (3), between transition conduit (5) and housing (1), be provided with a plurality of reinforcing ribs (4); In housing (1), the rear of reinforcing rib (4) is provided with radome fairing (2) around circular cone tail pipe (3), the end of radome fairing (2) is near the outlet of housing (1).
2. the blender of mash gas extraction as claimed in claim 1 and ventilation air gas, it is characterized in that: inlet tube (7) is bent into 90 °, the front end straight length of inlet tube (7) penetrates housing (1), and the axis of the terminal straight length of inlet tube (7), convergent divergent channel (6), transition conduit (5) and circular cone tail pipe (3) is positioned at the center of housing (1).
3. the blender of mash gas extraction as claimed in claim 1 and ventilation air gas is characterized in that: transition conduit (5) adopts straight tube, and convergent divergent channel (6) adopts the gradually big reducer pipe of internal diameter.
4. the blender of mash gas extraction as claimed in claim 1 and ventilation air gas is characterized in that: the terminal flow development length of inlet tube (7) is not less than 10 times of inlet tube (7) diameter.
5. the blender of mash gas extraction as claimed in claim 1 and ventilation air gas is characterized in that: the coning angle of circular cone tail pipe (3) is 45 °～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205194161U CN201763375U (en) | 2010-09-07 | 2010-09-07 | Device for mixing coal mine drained methane and ventilation air methane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205194161U CN201763375U (en) | 2010-09-07 | 2010-09-07 | Device for mixing coal mine drained methane and ventilation air methane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763375U true CN201763375U (en) | 2011-03-16 |
Family
ID=43715984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205194161U Expired - Lifetime CN201763375U (en) | 2010-09-07 | 2010-09-07 | Device for mixing coal mine drained methane and ventilation air methane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201763375U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936178A (en) * | 2010-09-07 | 2011-01-05 | 山东理工大学 | Mixer of coal mine extracted gas and ventilation gas |
| CN102322287A (en) * | 2011-08-23 | 2012-01-18 | 山东理工大学 | Mash gas extraction diluted mixture demister |
| CN102434191A (en) * | 2011-08-23 | 2012-05-02 | 山东理工大学 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
| CN103623723B (en) * | 2013-12-12 | 2016-04-20 | 中国矿业大学 | A kind of self-priming spiral-flow type coal extraction gas and ventilation air gas mixing arrangement |
-
2010
- 2010-09-07 CN CN2010205194161U patent/CN201763375U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936178A (en) * | 2010-09-07 | 2011-01-05 | 山东理工大学 | Mixer of coal mine extracted gas and ventilation gas |
| CN101936178B (en) * | 2010-09-07 | 2012-10-31 | 山东理工大学 | Mixer of coal mine extracted gas and ventilation gas |
| CN102322287A (en) * | 2011-08-23 | 2012-01-18 | 山东理工大学 | Mash gas extraction diluted mixture demister |
| CN102434191A (en) * | 2011-08-23 | 2012-05-02 | 山东理工大学 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
| CN102434191B (en) * | 2011-08-23 | 2013-09-18 | 山东理工大学 | Spiral-flow type dilution mixer with adjustable blades for gas drainage |
| CN103623723B (en) * | 2013-12-12 | 2016-04-20 | 中国矿业大学 | A kind of self-priming spiral-flow type coal extraction gas and ventilation air gas mixing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110316 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |