CN101140066A - Piezoelectric bow-wave flame injection device - Google Patents
Piezoelectric bow-wave flame injection device Download PDFInfo
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- CN101140066A CN101140066A CNA2007100200065A CN200710020006A CN101140066A CN 101140066 A CN101140066 A CN 101140066A CN A2007100200065 A CNA2007100200065 A CN A2007100200065A CN 200710020006 A CN200710020006 A CN 200710020006A CN 101140066 A CN101140066 A CN 101140066A
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Abstract
The invention discloses a piezoelectric shockwave flame spraying device for a drying cylinder of an asphalt mixing plant, which comprises a high-pressure oil-conveying pipe, a fuel oil atomizing nozzle, a combustion chamber with an igniter and a compressed air pipe communicated with the combustion chamber. The invention is characterized in that: the outlet of the high-pressure fuel oil is provided with a piezoelectric shockwave cavitation device in order to make the input high-pressure fuel oil after cavitation and atomization mixed with the compressed air, which not only renders the mixing between the fuel oil and the compressed air more uniform, but also renders the combustion after ignition more sufficient, the flame intensity high and the temperature field uniform; according to the requirements, the invention can facilitates the spray angle of flame and the flame intensity obviously improved through adjusting the fuel oil pressure and flow rate as well as the current of a shockwave device, and the maximum spray angle of flame can reach 160 degrees. The invention has the advantages of reasonable structure, convenient and flexible control and safe reliability, thereby being widely used in the asphalt mixtures for the highway.
Description
One technical field
The present invention relates to a kind of flame spray combustion device, particularly a kind of asphalt mixing plant drying piezoelectric bow-wave flame injection device.
Two background technologies
The asphalt that highway is used is to be mixed by stone and pitch, and stone generally all needs to carry out in mixing plant earlier just to be used for behind the heat drying and the mixing of pitch, and finally obtains asphalt.Mainly being the hot blast that adopts flame combustion in the prior art carries out heat drying to stone as the medium of heat drying in drying, and the medium of this heat drying all is to be provided by the flame spray combustion device, " engineering machinery and maintenance " the 5th phase in 2005 discloses the used traditional flame injection device of a kind of homemade LBQ type asphalt mixing plant stone drying, it is mainly by oil pipeline, atomizer, the combustion chamber, igniter and compressed air piping constitute, high pressure fuel is input in the flame spray combustion device by oil pipeline, directly high pressure fuel injection is nebulized to the combustion chamber by the atomizer that is arranged on the oil pipeline port, this vaporific fuel oil mixes with the compressed air that enters from compressed air piping in the combustion chamber again, then by the igniter ignition, flue gas after the burning is just injected under pressure as heat medium, directly contact with the material in the drying, material is carried out heat drying, therefore, flame injection device is the critical component of drying.Above-mentioned flame injection device, because high pressure fuel is directly to spray from oil pipeline, the problem that the method for this structure and atomizing exists is: 1, its flame jet angle is little, is generally 120 degree; 2, atomizing not exclusively can't guarantee that fuel oil all burns; (3) inhomogeneous, the undercapacity in temperature field of burning torch, not only heating is slow, and the bulk temperature that is heated material is kept evenly.
Three summary of the invention
The present invention seeks at the deficiencies in the prior art, provide that a kind of flame intensity is big, flame temperature field evenly, spray is apart from long, the flame jet angle is big, and the life-span is long, can make burning heat drying equipment reach the piezoelectric bow-wave flame injection device of better heating drying property.
The objective of the invention is to be achieved through the following technical solutions, piezoelectric bow-wave flame injection device, it comprises high-pressure pipeline, the fuel-oil atmozation head, have the combustion chamber of igniter and the compressed air hose that communicates with the combustion chamber, the outlet that it is characterized in that the combustion chamber has opening angle, in the afterbody of combustion chamber, be provided with the cavitation chamber, bottom, cavitation chamber connects the piezoelectricity shock wave device, the anterior fuel-oil atmozation head that connects, piezoelectricity shock wave device and fuel-oil atmozation head are co-located in a cavity, be provided with the fuel-flow control device in the porch of high-pressure pipeline, the outlet of high-pressure pipeline is connected the sidepiece in cavitation chamber, communicates with cavitation chamber cavity, and the piezoelectricity shock wave device connects the high pressure piezoelectric power supplies.
Piezoelectric bow-wave flame injection device of the present invention, the pressure of the high pressure fuel of its input is at 0.2～1.5MPa, fuel flow is to be controlled by controller, can be as required at 500～5000kg/t, fuel oil through control enters piezoelectricity shock wave cavitation chamber, the piezoelectricity shock wave that is produced by the piezoelectricity shock wave device produces cavitation to fuel oil, at the many high pressure bubbles of the inner formation of the fuel oil of cavitation, again by after the nozzle atomization, the cavitation fuel oil of this atomizing in the combustion chamber rapidly with full and uniform mixing of the compressed air with 0.2～0.7MPa pressure that enters from compressed air hose, light this blended fuel oil by piezoelectrics then, obtain being used for the jet flames of material heat drying.The intensity of jet flames is to be directly proportional with the electric current of fuel flow, fuel pressure and piezoelectricity shock wave device, it can be controlled by the intensity of regulating fuel pressure, fuel flow and piezoelectricity shock wave, the flame jet angle be according to drying vary in size and the requirement of jet face is determined, the exit angle by adjusting the fuel oil chamber during making and the current strength of piezoelectricity shock wave device just can satisfy the requirement of flame jet angle, and maximum flame jet angle can reach 160 and spend.In the combustion chamber, fuel oil and compressed-air actuated mixed proportion are 1: 50～1: 200, and it can be controlled the compressed air valve automatically by control system and realize.
The present invention compared with prior art its significant advantage is: 1, be provided with a piezoelectricity shock wave cavitation apparatus in the exit of high pressure fuel, the high pressure fuel that makes input is earlier through mixing with compressed air in the combustion chamber after cavitation and the atomizing again, so not only fuel oil is mixed with compressed air more even, and igniting back oil inflame is also more abundant, combustion flame intensity height, the temperature field is even; 2, can by the electric current of rational adjustment fuel pressure, fuel flow and piezoelectricity shock wave device, flame jet angle and flame intensity are improved significantly according to actual needs, the flame jet angle can reach 160 degree; 3, the present invention is rational in infrastructure, control easily, and piezoelectricity shock wave cavitation is provided by the high pressure piezoelectric power supplies in operating process, and access times can reach hundreds thousand of times, and are safe and reliable.
Concrete structure of the present invention is provided by the following drawings and embodiment.
Four description of drawings
Fig. 1 is the structural representation of the said piezoelectric bow-wave flame injection device according to the present invention.
Fig. 2 is the right view of Fig. 1.
Five specific embodiment
Below in conjunction with accompanying drawing, be example with the piezoelectric bow-wave flame injection device that is equipped with LB5000 type asphalt mixing plant, the present invention is described in further detail.
Referring to Fig. 1, Fig. 2, this piezoelectric bow-wave flame injection device is by piezoelectricity shock wave device 1, injection line 2, fuel flow controller 3, cavitation chamber 4, fuel-oil atmozation 5, combustion chamber 6, piezoelectrics 7, compressed air hose 8 is formed, the tube of combustion chamber 6 is thick to be 0.8cm, its opening shape is a taper barrel, opening shape also can be trapezoidal tubular, piezoelectrics 7 are installed on cones wall, combustion chamber 6 bottom internal diameters are 20cm, the degree of depth is 6cm, because the drying diameter of LB5000 type asphalt mixing plant is 1.5m, so the opening angle of combustion chamber 6 is elected 120 degree as, if the drying diameter of asphalt mixing plant is more than 1.5m, just can be by adjusting the shock strength of piezoelectricity shock wave device 1, after soon shock strength will be transferred by force, the opening angle of combustion chamber 6 just can be arranged to 160 degree, can reach atomizing effect preferably equally; Cavitation chamber 4 is a cylindrical shape, and the thick 0.8cm of barrel, internal diameter are 3.5cm, it is welded on the bottom of combustion chamber 6, and the fuel-oil atmozation 5 of band through hole is positioned at the top in cavitation chamber 4, and it can be structure as a whole with cavitation chamber 4, also can connect by welding, this example is structure as a whole; Piezoelectricity shock wave device 1 is selected the LBYJ5000 type for use, 6 bottom screws in from the combustion chamber for it, its head and fuel-oil atmozation 5 is co-located in a cavitation cavity, the inlet of injection line 2 is equipped with fuel flow controller 3, and the control range of fuel flow is at 500～5000kg/t, and this routine fuel flow is controlled to be 4000kg/t, the fuel pressure of input is 1Mpa, the outlet of injection line 2 from the combustion chamber 6 bottom sides pass, be welded on the side in cavitation chamber 4, communicate with cavitation chamber 4 cavitys; Compressed air hose 8 communicates with combustion chamber 6, during making, it can be structure as a whole with combustion chamber 6, also can weld, this example is structure as a whole, enter the compressed air of combustion chamber 6 from compressed air hose 8, its pressure limit is at 0.2～0.7MPa, this example is 0.6Mpa, in addition, in the combustion chamber, it is 1: 50～1: 200 that fuel oil and the compressed air mixed proportion in combustion chamber 6 should be controlled at, this routine intermediate fuel oil and compressed-air actuated mixed proportion are 1: 150, and it can be controlled the compressed air valve automatically by control system and realize.
The making material of the said piezoelectric bow-wave flame injection device of the present invention is all selected carbon steel for use.
Claims (3)
1. piezoelectric bow-wave flame injection device, it comprises high-pressure pipeline [2], fuel-oil atmozation head [5], have the combustion chamber [6] of igniter [7] and the compressed air hose [8] that communicates with combustion chamber [6], the outlet that it is characterized in that combustion chamber [6] has opening angle, in the afterbody of combustion chamber [6], be provided with cavitation chamber [4], bottom, cavitation chamber [4] connects piezoelectricity shock wave device [1], the anterior fuel-oil atmozation head [5] that connects, piezoelectricity shock wave device [1] is co-located in a cavity [4] with fuel-oil atmozation head [5], be provided with fuel-flow control device [3] in the porch of high-pressure pipeline [2], the outlet of high-pressure pipeline [2] is connected the sidepiece of cavitation chamber [4], communicate with cavitation chamber [4] cavity, piezoelectricity shock wave device [1] connects high voltage source.
2. piezoelectric bow-wave flame injection device according to claim 1, what it is characterized in that above-mentioned fuel-flow control device [3] is 500～5000kg/t by the amount control range,, fuel oil and compressed-air actuated mixed proportion are 1: 50～1: 200.
3. piezoelectric bow-wave flame injection device according to claim 1 and 2 is characterized in that the outlet of combustion chamber [6] is shaped as circular cone tube or trapezoidal tube, and opening angle is 120～160 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100200065A CN100458283C (en) | 2007-02-07 | 2007-02-07 | Piezoelectric bow-wave flame injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100200065A CN100458283C (en) | 2007-02-07 | 2007-02-07 | Piezoelectric bow-wave flame injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101140066A true CN101140066A (en) | 2008-03-12 |
| CN100458283C CN100458283C (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100200065A Expired - Fee Related CN100458283C (en) | 2007-02-07 | 2007-02-07 | Piezoelectric bow-wave flame injection device |
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| CN (1) | CN100458283C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953226A (en) * | 2016-05-20 | 2016-09-21 | 中国人民解放军装备学院 | Novel liquid fuel premixing and intake method for shock tube outside atomization |
| CN106377978A (en) * | 2016-11-07 | 2017-02-08 | 天津海泰环保科技发展股份有限公司 | Comprehensive processing system for rubber waste gas |
| CN117948610A (en) * | 2024-03-21 | 2024-04-30 | 大同知了科技有限公司 | Shock wave device, shock wave gasification burner and combustion method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2144665Y (en) * | 1992-07-21 | 1993-10-27 | 吉林省公路机械厂 | Bituminous concrete mixing equipment burning device |
| CN2158032Y (en) * | 1993-06-25 | 1994-03-02 | 中国科学院物理研究所 | Shock wave emulsified-atomized nozzle |
| JP3595418B2 (en) * | 1996-09-13 | 2004-12-02 | 三菱重工業株式会社 | Gas fuel in liquid combustion system |
| US6969249B2 (en) * | 2003-05-02 | 2005-11-29 | Hauck Manufacturing, Inc. | Aggregate dryer burner with compressed air oil atomizer |
| JP3691049B2 (en) * | 2004-09-13 | 2005-08-31 | 住重機器システム株式会社 | Supersonic jet burner |
-
2007
- 2007-02-07 CN CNB2007100200065A patent/CN100458283C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953226A (en) * | 2016-05-20 | 2016-09-21 | 中国人民解放军装备学院 | Novel liquid fuel premixing and intake method for shock tube outside atomization |
| CN105953226B (en) * | 2016-05-20 | 2019-01-29 | 中国人民解放军战略支援部队航天工程大学 | Premix air inlet new method is atomized outside the shock tube of liquid fuel |
| CN106377978A (en) * | 2016-11-07 | 2017-02-08 | 天津海泰环保科技发展股份有限公司 | Comprehensive processing system for rubber waste gas |
| CN106377978B (en) * | 2016-11-07 | 2022-07-12 | 天津海泰环保科技发展股份有限公司 | Comprehensive treatment system for rubber waste gas |
| CN117948610A (en) * | 2024-03-21 | 2024-04-30 | 大同知了科技有限公司 | Shock wave device, shock wave gasification burner and combustion method |
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| Publication number | Publication date |
|---|---|
| CN100458283C (en) | 2009-02-04 |
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Granted publication date: 20090204 Termination date: 20100207 |