CN2205252Y - Sound speed-supersonic speed combined pneumatic atomizing nozzle - Google Patents
Sound speed-supersonic speed combined pneumatic atomizing nozzle Download PDFInfo
- Publication number
- CN2205252Y CN2205252Y CN 94221584 CN94221584U CN2205252Y CN 2205252 Y CN2205252 Y CN 2205252Y CN 94221584 CN94221584 CN 94221584 CN 94221584 U CN94221584 U CN 94221584U CN 2205252 Y CN2205252 Y CN 2205252Y
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- China
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- spout
- liquid
- supersonic speed
- hybrid chamber
- nozzle
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- Expired - Fee Related
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- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The utility model discloses a pneumatic atomizing nozzle which combines sonic speed and supersonic speed, and comprises a liquid-gas nozzle core, a mixing cavity, one or more than one supersonic speed spout. After the liquid passes through the liquid-air nozzle core and is atomized by a sonic speed air-stream firstly, the liquid passes through the mixing cavity with large volume, is sprayed out by the spout, and is atomized again by high energy. The nozzle is suitable for atomizing various liquids, particularly very inferior fuel oil with high viscosity (larger than 60 DEG. E), and has the characteristics of favorable atomizing effect, difficult clogging and coking, less pollution, high rigidity of flame, simple structure, etc.
Description
The utility model relates to a kind of pneumatic nozzle that is applicable to the various atomizations of liquid, specifically a kind of velocity of sound-supersonic speed combined pneumatic atomizer.
At present, along with the progressively enhancing of petroleum refining industry's deep processing ability, the astatki quality of using as industrial furnace worse and worse, its viscosity does not all reach the minimum requirements in China's standard.In addition, the ash content in the heavy oil, impurity and moisture are also more and more higher, thereby cause heavy oil combustion incomplete, and combustion apparatus easily stops up coking, ablate and atmosphere pollution in the furnace wall.Existing heavy oil nozzle generally adopts exterior mixing or internal-mixing structure, as Chinese patent 90205838.X and the disclosed nozzle of 91203212.X, its inside all is provided with a cyclone, though they have brought up to 20 ° of E with the accommodation of furol viscosity, the viscosity of fuel heavy oil is higher than this value far away in the practical application; And its complex structure, dismounting inconvenience.Above-mentioned in addition two patents only have a very little hybrid chamber and unique velocity of sound cross section spout, and to making liquid-gas undercompounding, atomized particle size is big, and liquid spray rigidity is poor, easily stops up coking.
The purpose of this utility model provides a kind of especially high viscosity heavy oil fuel atomizing nozzle of various liquid that is used for, and its atomized particle size is tiny, is difficult for stopping up coking.
The utility model is a kind of velocity of sound-supersonic speed combined pneumatic atomizer.Comprise air inlet endless tube 6, pipeline 7, liquid-gas jets core 4, hybrid chamber 2 and spout 1, it is characterized in that liquid-gas jets core 4 front ends have two or more spray holes 3 of symmetrical distribution, its axis with and the axis angle of the fumarole 5 of its corresponding distribution be 60 °～90 °, hybrid chamber 2 is the large volume hybrid chamber, and spout 1 is the supersonic speed spout of one or more contraction-expandings wide outside and narrow inside.
As everyone knows, the good and bad key of decision atomizing is to improve atomization gas and the relative bump kinetic energy that is atomized liquid.For this reason, the utility model has adopted twice pneumatic bump of high energy to reach the purpose of atomizing effect the best, adopts the velocity of sound bump for the first time, and has adopted the supersonic speed bump of maximum kinetic energy for the second time.It is tiny to have an atomized particle size based on the atomizer of this method for designing, is difficult for stopping up, coking, and liquid spray rigidity is strong, sufficient combustion pollutes little advantage, have simple in structure, easy accessibility, be applicable to the atomizing of various liquid, especially industrial furnace high viscosity heavy oil fuel atomizing.Experiment showed, that this nozzle has fabulous atomizing effect for the heavy oil that viscosity is higher than 60 ° of E.
Fig. 1 is a profile of the present utility model.
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, be atomized liquid and enter liquid-gas jets core 4 by pipeline 7 with certain pressure, the two or more spray holes 3 that distribute from its front end edge radial symmetric spray.Atomization gas enters liquid-gas jets core 4 with certain pressure through air inlet endless tube 6, and sprays with the fumarole 5 of spray hole 3 corresponding distributions vertically from liquid-gas jets core 4.Because the Cross section Design of fumarole 5 becomes critical cross-section, to making atomization gas, intersect and clash at the liquid that is atomized of exit and corresponding spray hole 3 ejections with the ejection of velocity of sound air-flow, finish the atomizing under the velocity of sound first time.Liquid-gas mixture after the atomizing enters hybrid chamber 2, and hybrid chamber 2 is the large volume hybrid chamber, and its length is 2～4 times of its diameter, to promote the even blending of liquid-gas mixture two-phase in hybrid chamber.Front end at hybrid chamber 2 is provided with spout 1, and spout 1 is contraction-expanding supersonic speed spout wide outside and narrow inside, and its venturi is 1:1.5～1:3.5 with the area ratio in final outlet cross section, and air-flow can be sprayed with supersonic speed.Liquid-gas mixture in the hybrid chamber 2 fully mixing after spout 1 penetrates with supersonic flow, realized the atomizing under the supersonic speed for the second time.Because what spout 1 sprayed is the gentle mixture of liquid mist, so be difficult for stopping up coking.Because jet velocity is high, the rigidity of liquid spray is very good in addition.
Water experiment to the nozzle of Fig. 1 structure shows, at gas liquid ratio (weight ratio) is 0.2, gas pressure 0.4MPa(gauge pressure), fluid pressure 0.6MPa(gauge pressure) time, the outer 400mm place of spout Sauter mean diameter can reach below the 30 μ m, 40 ° of E heavy oil tests is shown sufficient combustion, bright on steel rolling furnace, do not stop up coking, and flame rigidity is strong.
Pneumatic nozzle of the present utility model, being connected all to adopt of its liquid-gas jets core 4 and pipeline 7, air inlet endless tube 6 and hybrid chamber 2 is threaded.
In actual applications, also can be split into its axis and the axis angle of the fumarole 5 of corresponding distribution be 60 °～90 ° inclined hole to spray hole 3.Spout 1 can be designed to single hole, single annular distance or arrange annular distance more according to the needs of flame profile, also can be irregularly-shaped hole or the circular port that distributes by definite shape.Wherein if spout 1 is many row's annular distances, its each axially bored line can intersect outside spout, and the angle of cut is 30 °～60 °.
Claims (6)
1, a kind of velocity of sound-supersonic speed combined pneumatic atomizer, comprise air inlet endless tube (6), pipeline (7), liquid-gas jets core (4), hybrid chamber (2) and spout (1), it is characterized in that liquid-gas jets core (4) front end has two or more spray holes (3) of symmetrical distribution, its axis with and the axis angle of the fumarole (5) of its corresponding distribution be 60 °～90 °, hybrid chamber (2) is the large volume hybrid chamber, and spout (1) is one or more contractions wide outside and narrow inside-expanding supersonic speed spout.
2, pneumatic nozzle as claimed in claim 1 is characterized in that the spray hole (3) and the best axis angle of fumarole (5) are 90 °.
3, pneumatic nozzle as claimed in claim 2, the length that it is characterized in that hybrid chamber (2) are 2～4 times of its diameter.
4, pneumatic nozzle as claimed in claim 3, the venturi that it is characterized in that contraction-expanding supersonic speed spout (1) and the area in final outlet cross section are than being 1:1.5～1:3.5.
5, pneumatic nozzle as claimed in claim 4 is characterized in that spout (1) can be designed to single hole, single annular distance as required or arrange annular distance more, also can be irregularly-shaped hole or the circular port that distributes by definite shape.
6, pneumatic nozzle as claimed in claim 5 is characterized in that the axis of each spout in many row's annular distances can intersect outside spout, the angle of cut is 30 °～60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221584 CN2205252Y (en) | 1994-09-27 | 1994-09-27 | Sound speed-supersonic speed combined pneumatic atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221584 CN2205252Y (en) | 1994-09-27 | 1994-09-27 | Sound speed-supersonic speed combined pneumatic atomizing nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2205252Y true CN2205252Y (en) | 1995-08-16 |
Family
ID=33835851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94221584 Expired - Fee Related CN2205252Y (en) | 1994-09-27 | 1994-09-27 | Sound speed-supersonic speed combined pneumatic atomizing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2205252Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274807A (en) * | 2011-08-05 | 2011-12-14 | 长沙理工大学 | Spray cooling nozzle for grinding processing |
| CN106140501A (en) * | 2015-04-15 | 2016-11-23 | 安徽艾可蓝节能环保科技有限公司 | A kind of atomizer for engines tail gas disposal |
| CN108644810A (en) * | 2018-06-07 | 2018-10-12 | 南京航空航天大学 | A kind of double pre- membrane type ultrasonic nozzles |
| CN108927300A (en) * | 2017-05-22 | 2018-12-04 | 郑州洁普智能环保技术有限公司 | Anti-blocking sprayer |
| CN112228908A (en) * | 2020-09-18 | 2021-01-15 | 西北工业大学 | Controllable flow type centrifugal nozzle for strengthening atomization |
-
1994
- 1994-09-27 CN CN 94221584 patent/CN2205252Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274807A (en) * | 2011-08-05 | 2011-12-14 | 长沙理工大学 | Spray cooling nozzle for grinding processing |
| CN106140501A (en) * | 2015-04-15 | 2016-11-23 | 安徽艾可蓝节能环保科技有限公司 | A kind of atomizer for engines tail gas disposal |
| CN108927300A (en) * | 2017-05-22 | 2018-12-04 | 郑州洁普智能环保技术有限公司 | Anti-blocking sprayer |
| CN108927300B (en) * | 2017-05-22 | 2021-07-09 | 郑州洁普智能环保技术有限公司 | Anti-blocking spray head |
| CN108644810A (en) * | 2018-06-07 | 2018-10-12 | 南京航空航天大学 | A kind of double pre- membrane type ultrasonic nozzles |
| CN112228908A (en) * | 2020-09-18 | 2021-01-15 | 西北工业大学 | Controllable flow type centrifugal nozzle for strengthening atomization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |