CN202229184U - Prefilming medium atomizing nozzle - Google Patents
Prefilming medium atomizing nozzle Download PDFInfo
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- CN202229184U CN202229184U CN2011202406223U CN201120240622U CN202229184U CN 202229184 U CN202229184 U CN 202229184U CN 2011202406223 U CN2011202406223 U CN 2011202406223U CN 201120240622 U CN201120240622 U CN 201120240622U CN 202229184 U CN202229184 U CN 202229184U
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- atomizing medium
- nozzle
- atomizing
- hole
- medium
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Abstract
A prefilming medium atomizing nozzle is particularly suitable for a fuel atomizing nozzle used by a combustor, belongs to the field of industry burning, and comprises a conical blunt body, a mouth, an air cover, a swirler, a nozzle joint, a fuel pipe, an atomizing medium and the like. Fuel oil forms an oil film rotating at high speed through the swirler, advances rotatably by being adhered to the inner wall of the mouth, and is sprayed out from a gradually reduced annular seam between the mouth and the conical blunt body at high speed. The atomizing medium runs from two paths, one path enters from a central atomizing medium pipe and is sprayed out from the gradually reduced annular seam between the mouth and the conical blunt body at high speed; and the other path can enter the nozzle by injecting the peripheral air or forcibly enter from the other atomizing medium pipe, and is sprayed out from the gradually reduced annular seam between the mouth and the conical blunt at high speed. The fuel oil fast loses stability and is atomized into oil mist with thin grain sizes under the functions of high-speed impacting and shearing of the inner and outer paths of the atomizing medium, and impulse friction on the oil film by the atomizing medium in the nozzle. The prefilming medium atomizing nozzle has a simple structure, good atomizing effect, large adjusting rate and reasonable atomizing angle, and is convenient to adjust.
Description
Technical field
The utility model relates to preparatory membrane type medium atomization nozzle, is specially adapted to the fuel atomizer as burner (machine) usefulness, belongs to energy source and power and industrial combustion field, also can be used for technologies such as dedusting, desulfurization.
Background technology
In the industrial fuel oil combustion apparatus, atomizer is a core component, directly affects the service behaviour of oil inflame equipment.Widely used atomizer can be divided into mechanical type (or claiming the simple pressure formula) atomizer and medium atomization nozzle two big classes substantially in the engineering at present; Wherein the mechanical type atomizer requires the fuel pressure of nozzle inlet high, atomizing effect is good not as the medium atomization nozzle, adjusting is smaller and Flow-rate adjustment is loaded down with trivial details, therefore uses extensively not as the latter.So-called medium atomization nozzle promptly utilizes mutual friction mutually, the impact of fuel oil and atomizing medium (compressed air or steam); Overcome fuel gauge surface tension, viscous force and inertia force; The fuel oil fragmentation is atomized into a large amount of small drops; The fuel gauge area is increased greatly, thereby help fuel oil effectively burning rapidly.
Common medium atomization nozzle has three kinds of basic structure forms such as internal-mixing, middle hybrid (or claiming y-type nozzle), exterior mixing in the engineering at present; Because the defective on these three kinds of these body structures of nozzle and the principle; Make these three kinds of nozzles exist different shortcomings respectively; Wherein, internal-mixing medium atomization nozzle is the multiple jets form with fuel oil-atomizing medium mixture that middle hybrid (Y type) medium atomization nozzle ejection goes out, and this just makes fuel droplet at the circumferencial direction skewness; Local rich oil district appears, and the internal-mixing medium atomization nozzle accident conditions that causes oil gas (vapour) to scurry mutually easily; Exterior mixing medium atomization nozzle air consumption is big, and fuel oil sprays from nozzle center, and atomizing medium sprays from fuel oil is peripheral, thereby atomizing angle is little, and the fuel droplet that will atomize easily regroups together deterioration atomizing effect, ignition difficulties.More than three kinds of medium atomization nozzles; Atomizing medium all interacts with the fuel oil of fluid column form, and contact area is less, and the relative velocity of atomizing medium and fuel oil is less; Because at this moment viscous force, surface tension and the inertia force of fuel oil fluid column are bigger; Atomizing medium is to the force limited of fuel oil, and is not fully utilized, and all exists irrationality on principle and the structure.
The comprehensive advantage that has all types of atomizers now; Overcome its shortcoming, the design from principle and structure optimization nozzle provides best condition for energy is delivered to fuel oil from atomizing medium; Total guiding theory is: the relative velocity of atomizing medium and fuel oil is big, turbulence level is strong, fuel oil is revolved the generate film and oil film is thin, big with the atomizing medium contact area, atomizing angle is reasonable, Flow-rate adjustment is convenient, gas (vapour) consumption rate is low; Thereby improve fuel atomization effect greatly, improve efficiency of combustion, cut down the consumption of energy and pollutant discharge amount; For realizing this purpose, the utility model patent is proposed.
The utility model content
Technical problem: the purpose of the utility model is to the principle and the structural deficiency that exist in the prior art, provide a kind of simple in structure, atomizing effect good, atomizing angle is reasonable, the preparatory easily membrane type medium atomization nozzle of Flow-rate adjustment.
Technical scheme: the preparatory membrane type medium atomization nozzle of the utility model comprises taper bluff body, lip, airhood, cyclone, nozzle connection, fuel pipe, atomizing medium pipe etc.
The fuel pipe of fuel oil outside the atomizing medium pipe of center gets into; Via the fuel hole on the nozzle connection 4. with cyclone on the eddy flow groove 2.; Under the effect of fuel pressure, form the oil film of high speed rotary motion; Pasting the rotation of lip inwall and advancing, spraying at a high speed from the tapering type annulus between lip and taper bluff body.Atomizing medium is divided into two-way, and one road atomizing medium pipe from the center gets into, and through the atomizing medium hole on nozzle connection and the cyclone 3., sprays at a high speed from the tapering type annulus between lip and taper bluff body; Another road atomizing medium has two kinds of implementations; Can utilize the kinetic energy of the fuel oil-atomizing medium mixture that goes out from the tapering type annulus high velocity jet between taper bluff body and the lip; Cause the local depression district; Static air around the injection, this part is had perforation airhood 1. by the air of injection via the periphery and sprays at a high speed from the tapering type annulus between airhood and lip, forms the second road atomizing medium; Also can establish an atomizing medium pipe more in addition in the outside of fuel pipe; Atomizing medium via the outer atomizing medium of nozzle connection hole 6. with lip atomizing medium hole 5.; Get into the peripheral airhood of not offering perforation; Spray at a high speed from the tapering type annulus between airhood and lip, form the second road atomizing medium.
Constantly quicken in the tapering type annulus of the atomizing medium that the center infeeds between lip and taper bluff body; Because atomizing medium is a turbulent condition, before not going out, constantly carrying out the pulsation friction to being attached at the oil film that rotatablely moves on the lip inwall from nozzle ejection; Increased the turbulence level on oil film surface; The unstability atomizing played an important role after this part panting action power was gone out from nozzle ejection for oil film, and along with constantly acceleration in oil film and the tapering type annulus of atomizing medium between lip and taper bluff body, oil film is drawn thinner and thinner under the shear action of atomizing medium; To nozzle exit; Inside and outside two-way atomizing medium is to oil film high speed impact, shearing, adds that still air is to the friction of fuel oil-atomizing medium mixture and the pulsation unstability of oil film itself on every side, and fuel oil is rapidly atomized into fine oil mist.
Technique effect: the utility model passes through the reasonable combination to the size of the tapering type annulus between tapering type annulus, airhood and lip between cyclone, lip and taper bluff body; Fuel oil is revolved the generate film in advance; Increased the contact area of atomizing medium and fuel oil greatly, strengthened turbulence level, utilized inside and outside two-way atomizing medium oil film high speed impact and shearing; Fuel oil is rapidly atomized into the minimum mist of oil of particle diameter, has improved the atomizing effect of fuel oil on principle and the structure greatly; Mist of oil is tapered to be sprayed at a high speed from nozzle, has overcome the prior art mist of oil and has been the circumferencial direction mist of oil skewness that the ejection of multiple jets form causes, and improves the ignition temperature field; The improvement of atomizing effect will significantly promote efficiency of combustion; Gas (vapour) consumption rate is low, is 0.02 under the declared working condition, and the gas of prior art (vapour) consumption rate between 0.2～0.6, reduces operating cost usually greatly; Flow-rate adjustment is convenient, only needs to establish control valve adjusting inlet fuel pressure at nozzle entrance and can regulate flow easily, need not to change parts; Atomizing angle is reasonable; No coking phenomenon; This preparatory membrane type medium atomization nozzle has overcome the defective of prior art from principle and structure, compact conformation, and easy to use, atomizing effect is good, and energy-saving effect is remarkable, has practicality widely.
Description of drawings
Fig. 1 is instance one structural representation of the utility model.
Fig. 2 is instance two structural representations of the utility model.
Among the figure: the 1-screw; 2-taper bluff body; The airhood of 3-band perforation; The 4-lip; The 5-cyclone; The 6-nozzle connection; The 7-fuel pipe; 8-center atomizing medium pipe; 9-is not with the airhood of perforation; The lip in 10-band atomizing medium hole; 11-is with the nozzle connection in outer atomizing medium hole; The outer atomizing medium pipe of 12-; 1.-perforation; 2.-the eddy flow groove; 3.-cyclone atomizing medium hole; 4.-the nozzle connection fuel hole; 5.-lip atomizing medium hole; 6.-the outer atomizing medium of nozzle connection hole.
The specific embodiment
To combine accompanying drawing that the instance of the utility model is done further to describe below:
Shown in Figure 1, membrane type medium atomization nozzle is made up of screw 1, taper bluff body 2, the airhood 3 of being with perforation, lip 4, cyclone 5, nozzle connection 6, fuel pipe 7, center atomizing medium pipe 8 etc. in advance.Connect with screw 1 between taper bluff body 2 and the cyclone 5, or connect through tapping on taper bluff body 2, taper bluff body 2 ends have conical socket.Through thread connection, or cyclone 5 and nozzle connection 6 be processed as an one-piece parts between cyclone 5 and the nozzle connection 6,2. cyclone 5 has helicla flute in a circumferential direction, and 3. annulus place, the outside, center has the cyclone atomizing medium hole that is uniformly distributed along the circumference.Nozzle connection 6 and fuel pipe 7,8 welding of center atomizing medium pipe, nozzle connection 6 centers have macropore, and 4. outer circumference place in center has the nozzle connection fuel hole that is uniformly distributed along the circumference.Through thread connection or welding, lip 4 outlets are for conical between lip 4 and the nozzle connection 6.Through thread connection or welding, be with to have the perforation that is uniformly distributed along the circumference on airhood 3 excircles of perforation 1. between airhood 3 and the lip 4 of band perforation, head is tapering type ring exit.
Its course of work is following: fuel oil infeeds from fuel pipe 7; 4. the fuel hole that is uniformly distributed along the circumference on the process nozzle connection 6 gets into cyclone 5, under the effect of fuel pressure; Making fuel oil revolve generate through the eddy flow groove on the cyclone 5 after 2. is oil film, and oil film is pasting the inwall rotation of lip 4 and advancing; Atomizing medium pipe 8 infeeds one road atomizing medium from the center; The atomizing medium hole that is uniformly distributed along the circumference on the macropore at process nozzle connection 6 centers and the cyclone 5 3.; Constantly quicken in the tapering type circular passage between lip 4 and taper bluff body 2, because atomizing medium is a turbulent condition, before not going out from nozzle ejection; Constantly carrying out the pulsation friction to being attached at the oil film that rotatablely moves on lip 4 inwalls; Increased the turbulence level on oil film surface, this part panting action power is gone out back unstability atomizing for oil film from nozzle ejection and is played an important role, near nozzle exit; The fuel oil high speed shear that atomizing medium will revolve the generate film is in advance drawn thin, until spraying at a high speed from nozzle; Another road atomizing medium utilizes the kinetic energy of fuel oil-atomizing medium mixture that the tapering type annulus high velocity jet between lip 4 and the taper bluff body 2 goes out; Cause the local depression district; 1. the injection ambient air gets into the airhood 3 of perforation from the perforation that is uniformly distributed along the circumference of airhood 3 cylindricals of band perforation, in the airhood 3 of band perforation and the tapering type annulus between the lip 4, sprays at a high speed; In the high speed impact of inside and outside two-way atomizing medium, shear action and under the pulsation rubbing action of nozzle interior atomizing medium to oil film, the very fast unstability of fuel oil is atomized into the mist of oil of tiny particle diameter.
Shown in Figure 2, in advance membrane type medium atomization nozzle is by screw 1, taper bluff body 2, cyclone 5, fuel pipe 7, center atomizing medium pipe 8, not with the lip 10 in the airhood 9 of perforation, band atomizing medium hole, form with the nozzle connection 11 in outer atomizing medium hole, outer atomizing medium pipe 12 etc.Connect with screw 1 between taper bluff body 2 and the cyclone 5, or connect through tapping on taper bluff body 2, taper bluff body 2 ends have conical socket.Pass through thread connection between cyclone 5 and the nozzle connection 11 with outer atomizing medium hole; Or cyclone 5 and nozzle connection 11 with outer atomizing medium hole be processed as an one-piece parts; 2. cyclone 5 has helicla flute in a circumferential direction, has the atomizing medium hole that along the circumferential direction is uniformly distributed with 3. near the center.Nozzle connection 11 and fuel pipe 7, center atomizing medium pipe 8,12 welding of outer atomizing medium pipe with outer atomizing medium hole; Nozzle connection 11 centers with outer atomizing medium hole have macropore; 4. outer circumference place, center has the nozzle connection fuel hole that is uniformly distributed along the circumference, and 6. joint fuel hole 4. outer circumference place has the outer atomizing medium of the nozzle connection hole that is uniformly distributed along the circumference.The lip 10 in band atomizing medium hole with passing through thread connection or welding between the nozzle connection 11 in outer atomizing medium hole; 5. the lip 10 in band atomizing medium hole has the lip atomizing medium hole that is uniformly distributed along the circumference near the place, periphery, and lip 10 outlets in band atomizing medium hole are for conical.Not with between the lip 10 in the airhood 9 of perforation and band atomizing medium hole through thread connection or welding, airhood 9 heads with perforation are not tapering type ring exit.
Its course of work is following: fuel oil infeeds from fuel pipe 7; The fuel hole that is uniformly distributed along the circumference on the nozzle connection 11 of process with outer atomizing medium hole 4.; Get into cyclone 5; Under the effect of fuel pressure, making fuel oil revolve generate through the eddy flow groove on the cyclone 5 after 2. is oil film, and the inwall that oil film is pasting the band lip 10 in atomizing medium hole rotates and advances; Atomizing medium pipe 8 infeeds one road atomizing medium from the center; Through 3. with the atomizing medium hole that is uniformly distributed along the circumference on the macropore at nozzle connection 11 centers in outer atomizing medium hole and the cyclone 5; In the lip 10 of being with the atomizing medium hole and the tapering type circular passage between the taper bluff body 2, constantly quicken, because atomizing medium is a turbulent condition, before not going out from nozzle ejection; The oil film that rotatablely moves on lip 10 inwalls that are attached at band atomizing medium hole is constantly being carried out the pulsation friction; Increased the turbulence level on oil film surface, this part panting action power is gone out back unstability atomizing for oil film from nozzle ejection and is played an important role, near nozzle exit; The fuel oil high speed shear that atomizing medium will revolve the generate film is in advance drawn thin, until spraying at a high speed from nozzle; Another road atomizing medium infeeds from outer atomizing medium pipe 12; Through the outer atomizing medium of the nozzle connection hole that is uniformly distributed along the circumference with nozzle connection 11 peripheries in outer atomizing medium hole 6., the lip atomizing medium hole that is uniformly distributed along the circumference, lip 10 peripheries in band atomizing medium hole 5., the tapering type annulus that gets into not between the lip 10 in airhood 9 with perforation, band atomizing medium hole sprays at a high speed; In the high speed impact of inside and outside two-way atomizing medium, shear action and under the pulsation rubbing action of nozzle interior atomizing medium to oil film, the very fast unstability of fuel oil is atomized into the mist of oil of tiny particle diameter.
Claims (6)
1. preparatory membrane type medium atomization nozzle is characterized in that: it comprises the airhood (3), lip (4), cyclone (5), nozzle connection (6), fuel pipe (7), center atomizing medium pipe (8) of screw (1), taper bluff body (2), band perforation, not with the airhood (9) of perforation, lip (10), the nozzle connection (11) with outer atomizing medium hole, the outer atomizing medium pipe (12) in band atomizing medium hole.
2. preparatory membrane type medium atomization nozzle according to claim 1 is characterized in that: connect through screw (1) between described taper bluff body (2) and the cyclone (5), or connect through going up tapping at taper bluff body (2); Taper bluff body (2) end has conical socket; Have the eddy flow groove 2. on cyclone (5) circumference, 3. annulus place in the center outside has the cyclone atomizing medium hole that is uniformly distributed along the circumference; Pass through thread connection between cyclone (5) and the nozzle connection (6), or cyclone (5) and nozzle connection (6) are processed as an one-piece parts.
3. preparatory membrane type medium atomization nozzle according to claim 1 is characterized in that: pass through thread connection or welding between airhood of described band perforation (3) and the lip (4); Have the perforation that is uniformly distributed along the circumference 1. on airhood (3) excircle of band perforation, head is tapering type ring exit; Lip (4) outlet is for conical.
4. preparatory membrane type medium atomization nozzle according to claim 1 is characterized in that: pass through thread connection or welding between described lip (4) and the nozzle connection (6); Nozzle connection (6) center has the macropore that supplies atomizing medium circulation usefulness, and 4. outer circumference place in center has the nozzle connection fuel hole that is uniformly distributed along the circumference; Nozzle connection (6) and fuel pipe (7), center atomizing medium pipe (8) welding.
5. preparatory membrane type medium atomization nozzle according to claim 1 is characterized in that: described not with between the lip (10) in the airhood (9) of perforation and band atomizing medium hole through thread connection or welding; Airhood (9) head with perforation is not tapering type ring exit; 5. the lip (10) in band atomizing medium hole has the lip atomizing medium hole that is uniformly distributed along the circumference near the excircle place, exports to be taper shape.
6. preparatory membrane type medium atomization nozzle according to claim 1 is characterized in that: the lip (10) in described band atomizing medium hole and with between the nozzle connection (11) in outer atomizing medium hole through thread connection or welding; Nozzle connection (11) center with outer atomizing medium hole has the macropore that supplies atomizing medium circulation usefulness; 4. outer circumference place, center has the nozzle connection fuel hole that is uniformly distributed along the circumference, and 6. joint fuel hole 4. outer circumference place has the outer atomizing medium of the nozzle connection hole that is uniformly distributed along the circumference; With between the nozzle connection (11) in outer atomizing medium hole and the cyclone (5) through thread connection, maybe will be processed as an one-piece parts with cyclone (5) with the nozzle connection (11) in outer atomizing medium hole; Nozzle connection (11) and fuel pipe (7), center atomizing medium pipe (8), outer atomizing medium pipe (12) welding with outer atomizing medium hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202406223U CN202229184U (en) | 2011-07-10 | 2011-07-10 | Prefilming medium atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202406223U CN202229184U (en) | 2011-07-10 | 2011-07-10 | Prefilming medium atomizing nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN202229184U true CN202229184U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202406223U Expired - Fee Related CN202229184U (en) | 2011-07-10 | 2011-07-10 | Prefilming medium atomizing nozzle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461739A (en) * | 2017-08-11 | 2017-12-12 | 北京理工大学 | A kind of multiple jet burner of the promotion liquid fuel atomization based on interior contour stealth |
| CN108480071A (en) * | 2018-04-27 | 2018-09-04 | 中国东方电气集团有限公司 | A kind of pulsating atomizer |
| CN109082288A (en) * | 2018-10-30 | 2018-12-25 | 农业部规划设计研究院 | A kind of biomass coke tar combustion system and method |
| CN114017772A (en) * | 2021-10-27 | 2022-02-08 | 神华准格尔能源有限责任公司 | Multi-air-passage radiation type three-stage atomization nano hydrocarbon fuel nozzle and application thereof |
-
2011
- 2011-07-10 CN CN2011202406223U patent/CN202229184U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461739A (en) * | 2017-08-11 | 2017-12-12 | 北京理工大学 | A kind of multiple jet burner of the promotion liquid fuel atomization based on interior contour stealth |
| CN108480071A (en) * | 2018-04-27 | 2018-09-04 | 中国东方电气集团有限公司 | A kind of pulsating atomizer |
| CN108480071B (en) * | 2018-04-27 | 2024-05-03 | 东方电气洁能科技成都有限公司 | Pulsation atomizer |
| CN109082288A (en) * | 2018-10-30 | 2018-12-25 | 农业部规划设计研究院 | A kind of biomass coke tar combustion system and method |
| CN109082288B (en) * | 2018-10-30 | 2024-06-04 | 农业部规划设计研究院 | Biomass tar combustion system and method |
| CN114017772A (en) * | 2021-10-27 | 2022-02-08 | 神华准格尔能源有限责任公司 | Multi-air-passage radiation type three-stage atomization nano hydrocarbon fuel nozzle and application thereof |
| CN114017772B (en) * | 2021-10-27 | 2023-06-13 | 神华准格尔能源有限责任公司 | Multi-air-passage radiation type three-stage atomized nano hydrocarbon fuel nozzle and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140710 |
|
| EXPY | Termination of patent right or utility model |