CN1807981A - Method and apparatus for mixing fuel gas-air for blast wave blower - Google Patents
Method and apparatus for mixing fuel gas-air for blast wave blower Download PDFInfo
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- CN1807981A CN1807981A CN 200610000054 CN200610000054A CN1807981A CN 1807981 A CN1807981 A CN 1807981A CN 200610000054 CN200610000054 CN 200610000054 CN 200610000054 A CN200610000054 A CN 200610000054A CN 1807981 A CN1807981 A CN 1807981A
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Abstract
The invention relates to a fuel gas-air mixing method of explosion wave dust blower and relative device, belonging to the explosion wave dust blowing technique. In the section of at least L meters from the center of downstream fuel gas outlet to the flowing direction of mixed gas, the thickness of said mixed airflow is less or equal to B and the mixed airflow is in turbulent condition, while B=5mm, and L=4B. the device comprises a fuel gas chamber, a air channel, and a mixed air channel; the wall of fuel gas chamber has a fuel gas outlet connecting the air channel; in said section with L meters, the thickness of mixed airflow channel B<=5mm, while L=4B. The invention has the advantages that: it has high mixed uniformity, light ignition accumulated charcoal, and it can apply the miniaturization and modularization of dust blower.
Description
Affiliated technical field
The invention belongs to blast wave and blow the gray technology field, be specifically related to a kind of fuel gas-air mixed method and device that is used for blast wave blower.
Background technology
Blast wave blower has another name called pulse soot blower, shock wave soot blower, shock-wave ash blowing device etc., be the earliest by the scientific and technical personnel of Ukraine in last century the eighties invent at first, mainly be that the premix gas that fuel and combustion-supporting gas are formed explodes in the blast jar internal combustion that is communicated with flue by jet pipe, by percussion and the souring removing heat-transfer surface of high-speed jet and the dust stratification of flue wall of explosion wave.Domestic then from last century the nineties begin development because ash-removal effect is good and can remove the intractable black dirt, develop very rapid.
Existing blast wave blower all is to adopt air as combustion-supporting gas, fuel also adopts gaseous fuel mostly, thereby all need fuel gas and air are mixed into uniform flammable premix gas, all more than 10mm, the mixture homogeneity of this mixed method is relatively poor for the thickness of existing methods mixed airflow in blender.
Summary of the invention
The objective of the invention is to: a kind of fuel gas-air mixed method and device that is used for blast wave blower is provided, and compared with the prior art, the mixture homogeneity of this mixed method and device is better.
Method scheme of the present invention is: a kind of fuel gas-air mixed method that is used for blast wave blower, mainly be to begin towards the flow direction of gaseous mixture at least in the long distance segment of L in fuel gas export center from downstream, make the thickness of fuel gas and Air mixing air-flow be less than or equal to B, and make fuel gas and Air mixing air-flow in this distance segment be in turbulent condition, B=5mm wherein, L=4B.
As everyone knows, the stream born of the same parents of the air-flow of turbulent condition also exist perpendicular to the horizontal random motion that flows to when flowing to motion, and this horizontal random motion of obviously flowing born of the same parents is easier to make fuel gas and air to mix; And the mixed airflow thickness that is less than or equal to 5mm has reduced the lateral dimension of mixed airflow significantly than prior art, and this just makes more turbulent flow born of the same parents' mixed and disorderly transverse movement be easier to cause fuel gas to mix with the even of air; Experiment shows: be less than or equal to 5mm, simultaneously fuel gas and Air mixing air-flow be under the prerequisite of turbulent condition in the thickness B that makes fuel gas and Air mixing air-flow, begin towards the flow direction of gaseous mixture at least in the long distance segment of 4B in the fuel gas export center from downstream, fuel gas and air just can be mixed into even substantially.So compared with the prior art, the mixture homogeneity of mixed method of the present invention is better.
The scheme of device of the present invention is: adopt the above-mentioned mixing arrangement that is used for the fuel gas-air mixed method of blast wave blower, mainly comprise fuel gas chamber, air flow channel and gaseous mixture runner, on the wall of fuel gas chamber, has the fuel gas gas outlet that communicates with air flow channel, begin towards the flow direction of gaseous mixture at least in the long distance segment of L from the fuel gas gas outlet center in downstream, the thickness B of gaseous mixture runner is less than or equal to 5mm, wherein L=4B.
Major advantage of the present invention is:
1. mixture homogeneity is better than prior art, evidence, and the mixture homogeneity of this mixed method and device compared with the prior art tool is greatly improved;
2. because mixture homogeneity improves, and the carbon distribution of the electric igniter of blast wave blower alleviates, longer service life is safeguarded simplyr, and can be installed in apart from the very near gaseous mixture runner of mixing arrangement;
Since mixture homogeneity improve, under the constant prerequisite of other condition, fuel saving gas more, the bursting strength of gaseous mixture is also higher;
4. because mixture homogeneity improves, and it is shorter that blender can design, this miniaturization, intensification, modularized design for blast wave blower mixed firing part has crucial meaning.
If mixed airflow has just reached the air-flow velocity of turbulent condition is the V meter per second, and in order to increase the turbulence level of mixed airflow, the flow velocity that preferably makes mixed airflow is greater than 1.5V.
Description of drawings
Below by 2 specific embodiments method of the present invention is described in more detail, also in conjunction with the accompanying drawings and embodiments mixing arrangement of the present invention is provided further instruction in addition.
Fig. 1 is the local vertically cross-sectional schematic of the embodiment of mixing arrangement of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1.
1. air hoses among the figure, 2. fuel gas gas outlet, 3. fuel gas pipe, 4. fuel gas pipe end-plate, 5. gaseous mixture runner, 6. fuel gas chamber, 7. air flow channel, 8. fuel gas gas outlet.
The specific embodiment
Method embodiment 1:
Begin in the distance segment of the flow direction 20mm of gaseous mixture, to make the thickness of gaseous mixture equal 5mm in fuel gas export center, make the flow velocity of mixed airflow reach 8m/s simultaneously from downstream.
Method embodiment 2:
Begin in the distance segment of the flow direction 10mm of gaseous mixture, to make the thickness of gaseous mixture equal 2mm from fuel gas and air contact position, make the flow velocity of mixed airflow reach 12m/s simultaneously.
Device embodiment:
As accompanying drawing 1, shown in the accompanying drawing 2, the mixing arrangement of present embodiment mainly comprises air hose 1 and fuel gas pipe 3, fuel gas pipe 3 is enclosed within the air hose 1 and the longitudinal centre line of the two overlaps, fuel gas pipe 3 is outer and the width of the annular space that air hose 1 is interior is 2.5mm, be welded with the shrouding 4 of a circle in the end of fuel gas pipe 3, fuel gas pipe 3 has constituted fuel gas chamber 6 with the interior space of pipe that shrouding 4 surrounds, on the tube wall of fuel gas pipe 3, have two circles along the equally distributed aperture 2 of giving vent to anger of circumference, 8, the diameter of these apertures is 1.5mm, the annular space that fuel gas pipe 3 is outer and air hose 1 is interior, played first lap venthole 2 by left end and be divided into left and right sides two parts, the left side be air flow channel 7, the right be gaseous mixture runner 5, counting the give vent to anger center of circle to the distance of the end of fuel gas pipe 3 of aperture 8 of first lap from the right is 30mm.
Claims (3)
1. fuel gas-air mixed method that is used for blast wave blower, mainly be to begin towards the flow direction of gaseous mixture at least in the long distance segment of L in fuel gas export center from downstream, make the thickness of fuel gas and Air mixing air-flow be less than or equal to B, and make fuel gas and Air mixing air-flow in this distance segment be in turbulent condition, it is characterized in that: B=5mm, L=4B.
2. a kind of fuel gas-air mixed method that is used for blast wave blower according to claim 1, it is characterized in that: if mixed airflow has just reached the air-flow velocity of turbulent condition is the V meter per second, and the flow velocity that makes mixed airflow is greater than 1.5V.
3. adopt the described mixing arrangement that is used for the fuel gas-air mixed method of blast wave blower of claim 1, mainly comprise fuel gas chamber (6), air flow channel (7) and gaseous mixture runner (5), on the wall of fuel gas chamber (6), has the fuel gas gas outlet (2,8) that communicates with air flow channel (7), it is characterized in that: the center of the fuel gas outlet (8) in certainly downstream begins in the flow direction distance segment that L grows at least of gaseous mixture, the thickness B of gaseous mixture runner is less than or equal to 5mm, wherein L=4B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610000054 CN1807981A (en) | 2006-01-06 | 2006-01-06 | Method and apparatus for mixing fuel gas-air for blast wave blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610000054 CN1807981A (en) | 2006-01-06 | 2006-01-06 | Method and apparatus for mixing fuel gas-air for blast wave blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1807981A true CN1807981A (en) | 2006-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200610000054 Pending CN1807981A (en) | 2006-01-06 | 2006-01-06 | Method and apparatus for mixing fuel gas-air for blast wave blower |
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| CN (1) | CN1807981A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278764A (en) * | 2010-06-11 | 2011-12-14 | 通用电气公司 | Pulsed detonation cleaning device with multiple folded flow paths |
| CN103206714A (en) * | 2013-03-22 | 2013-07-17 | 大同凡元兴科技有限公司 | Weak detonation tank for pulse soot blower |
-
2006
- 2006-01-06 CN CN 200610000054 patent/CN1807981A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278764A (en) * | 2010-06-11 | 2011-12-14 | 通用电气公司 | Pulsed detonation cleaning device with multiple folded flow paths |
| CN102278764B (en) * | 2010-06-11 | 2015-11-25 | Bha阿尔泰尔有限责任公司 | There is the pulsed detonation cleaning device of multiple folded flow paths |
| CN103206714A (en) * | 2013-03-22 | 2013-07-17 | 大同凡元兴科技有限公司 | Weak detonation tank for pulse soot blower |
| CN103206714B (en) * | 2013-03-22 | 2015-03-18 | 周庆芬 | Weak detonation tank for pulse soot blower |
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