CN201225656Y - Air atomizing nozzle - Google Patents
Air atomizing nozzle Download PDFInfo
- Publication number
- CN201225656Y CN201225656Y CNU2008201149899U CN200820114989U CN201225656Y CN 201225656 Y CN201225656 Y CN 201225656Y CN U2008201149899 U CNU2008201149899 U CN U2008201149899U CN 200820114989 U CN200820114989 U CN 200820114989U CN 201225656 Y CN201225656 Y CN 201225656Y
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- nozzle
- air
- deflector
- atomizing nozzle
- fuel
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- Expired - Fee Related
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- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The utility model relates to an air atomizing nozzle used in an aircraft engine or a gas turbine. A spraying nozzle is connected with a centrifugal type atomizing nozzle through an adapter, a deflector is connected at the front of the centrifugal type atomizing nozzle, the inner wall of the deflector is a conical surface, and the angle of the conical surface is between 80 degrees and 90 degrees. A nozzle nut is connected with the outer side of the deflector, an annular channel expanding outwards is formed by the inner wall of the nozzle nut and the outer wall of the deflector, eight to sixteen air intake inclined holes which are uniformly distributed in the circumferential direction are arranged on the nozzle nut, ends of the air intake inclined holes at one side are communicated with the annular channel, and the other ends of the air intake inclined holes are connected with the outlet of a gas compressor, the included angle between the central axle line of the inclined hole and the axial line of the centrifugal type atomizing nozzle is 45 plus or minus 5 degrees. The fuel can be fully atomized through the air atomizing nozzle, meanwhile the oxygen concentration in the combustion chamber is increased, thus the fuel can be more completely burnt, the combustion efficiency of the fuel is enhanced, the exhaust smoke and nitrogen oxide are reduced, and the emission of pollutants is decreased.
Description
Technical field
The utility model relates to a kind of air atomizer spray nozzle that is used for aero-engine or gas turbine.
Background technology
The combustion chamber is one of critical piece of machines such as gas turbine or aero-engine.Low design of polluting low emission combustor is one of gas turbine key technology, and fuel nozzle is the vitals of combustion chamber, and the quality of its performance is directly connected to the performance and the life-span of whole combustion chamber.For guaranteeing the startup and the off design performance of normal operation in combustion chamber and machine, usually require fuel nozzle can in a wider load scope, guarantee promptly to require the fuel oil drop that a good atomized particle size and suitable atomization angle are arranged by good atomization quality.The combustion chamber generally adopted as shown in Figure 1 rotarytype injector to realize fuel-oil atmozation in the past.In the pressure atomization technology, utilize oil pump that fuel oil pressurization back is entered the spin chamber that gives centrifugal spraying nozzle 1 by nozzle body 9 and adapter 10, in centrifugal force and the capillary interaction of fuel oil, oil film is torn into little oil droplet, from nozzle, spray, form the mist of oil of conical distribution, thereby finish whole atomization process.Because it is bigger that the atomization quality of the centrifugal spraying nozzle 1 of single oil circuit changes with import oil pressure (fuel flow), can't satisfy the atomization of machine under startup and declared working condition and variable working condition simultaneously.Because centrifugal spraying nozzle 1 front end oil mist concentration is higher, the oxygen content relative deficiency causes oil inflame insufficient, is easy to generate phenomenons such as smoking of the exhaust and discharged nitrous oxides exceed standard in addition.
Summary of the invention
The purpose of this utility model provides a kind of air atomizer spray nozzle, it both can obtain reasonable atomized particle size and distribute, can improve the oxygen content of spray nozzle front end mist of oil upper zone again, the assurance oil inflame is abundant, reduce smoking of the exhaust discharged nitrous oxides index, guarantee that whole combustion chamber can satisfy the requirement of high-efficient low polluting combustion technology.
The technical solution of the utility model is: nozzle body links by adapter and centrifugal spraying nozzle, connects an air deflector before the centrifugal spraying nozzle, and the air deflector inwall is a conical surface, and conical surface angle is between 80 °-90 °.The air deflector outside connects a nozzle nut, nozzle nut inwall and air deflector outer wall form a circular passage to external diffusion, 8-16 air inlet inclined hole that along the circumferential direction is evenly distributed is set on nozzle nut, one end of air inlet inclined hole communicates with the circular passage, the other end is connected with the outlet of compressor, and wherein the angle between the axis of inclined hole and the centrifugal atomizing nozzle-axis is 45 ± 5 °.The conical surface angle of described air deflector inwall is 85 °.The described air inlet inclined hole that is evenly distributed is 12.
Advantage of the present utility model is that this device can make fuel oil obtain atomizing fully, increased the same oxygen concentration in combustion chamber simultaneously, it is more complete that oil inflame is got, and improved combustion efficiency of fuel oil, reduce the generation of smoking of the exhaust and nitrogen oxide, reduced the discharging of pollutant.
Description of drawings
Fig. 1 is the existing centrifugal spraying structure of nozzle of a utility model schematic diagram;
Fig. 2 is the structural representation of the utility model air atomizer spray nozzle.
The specific embodiment
As shown in Figure 2, nozzle body 9 links by adapter 10 and centrifugal spraying nozzle 1, connects an air deflector 2 before centrifugal spraying nozzle 1, and air deflector 2 inwalls 7 are a conical surface, and conical surface angle is that more satisfactory conical surface angle is 85 ° between 80 °-90 °.Air deflector 2 outsides connect a nozzle nut 3, nozzle nut 3 inwalls 6 form a circular passage 4 to external diffusion with air deflector outer wall 8,8-16 or 12 air inlet inclined holes 5 that along the circumferential direction are evenly distributed are set on nozzle nut 3, one end of air inlet inclined hole 5 communicates with circular passage 4, the other end is connected with the outlet of compressor, and wherein the angle between the axis of inclined hole 5 and centrifugal atomizing nozzle 1 axis is 45 ± 5 °.
Described air nozzle atomization process is achieved in that fuel oil through after the oil pump pressurization, enters the spin chamber 11 of centrifugal atomizing nozzle 1 from nozzle body 9, adapter 10, obtains certain axial velocity and circumferencial direction speed after jet hole 12 spray.The fuel oil of nozzle bore 12 ejections forms the open circles taper oil film of rotation because of strong eddy flow, and under the surface tension effects of centrifugal force and fuel oil self oil film is torn into little oil droplet, thereby finishes the preliminary atomization process of nozzle.The pressure-air that comes from blower outlet enters the circular passage 4 of nozzle gas circuit by air inlet inclined hole 5, being a conical surface at spout 13 places outwards sprays, the high speed rotary air mixes the strong shear action of generation with the fuel oil of the preliminary atomizing that sprays in air deflector 2 conical surfaces, make fuel oil reach better atomizing effect, thereby finish whole fuel-oil atmozation process.And pressure-air sprays at spout 13 places through the diffused circular passage 4 of nozzle gas circuit, on the one hand strengthened the premix of fuel oil mist of oil and air in the combustion chamber, spray-cone angle to fuel oil has played a guiding diffusion, reduce the peak temperature of flame combustion chamber, suppressed the generation of nitrogen oxide in the combustion chamber; On the other hand because replenishing of additional air increased the oxygen concentration of this position, thereby it is more complete that oil inflame is got, and improved the efficiency of combustion of combustion chamber, and effectively reduce the exhaust combustion chamber phenomenon of smoldering, improved environmental-protecting performance greatly.
Claims (3)
1. air atomizer spray nozzle, comprise nozzle body (9), adapter (10) and centrifugal spraying nozzle (1), it is characterized in that: at preceding connection one air deflector of centrifugal spraying nozzle (1) (2), air deflector (2) inwall (7) is that an angle is 80 °～90 ° the conical surface, air deflector (2) outside connects a nozzle nut (3), along the circumferential direction be provided with 8～16 air inlet inclined holes (5) that are evenly distributed on the nozzle nut (3), one end of air inlet inclined hole (5) communicates with the circular passage (4) that air deflector outer wall (8) forms with nozzle nut (3) inwall (6), the other end is connected with the outlet of compressor, and wherein the angle between the axis of air inlet inclined hole (5) and centrifugal atomizing nozzle (1) axis is 45 ± 5 °.
2. air atomizer spray nozzle as claimed in claim 1 is characterized in that: the conical surface angle of described air deflector (2) inwall (7) is 85 °.
3. air atomizer spray nozzle as claimed in claim 1 is characterized in that: the described air inlet inclined hole (5) that is evenly distributed is 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201149899U CN201225656Y (en) | 2008-05-12 | 2008-05-12 | Air atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201149899U CN201225656Y (en) | 2008-05-12 | 2008-05-12 | Air atomizing nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225656Y true CN201225656Y (en) | 2009-04-22 |
Family
ID=40598546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201149899U Expired - Fee Related CN201225656Y (en) | 2008-05-12 | 2008-05-12 | Air atomizing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225656Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538016A (en) * | 2012-01-11 | 2012-07-04 | 哈尔滨工程大学 | Internal rotational flow dual fuel nozzle for chemical regenerative cycle |
| CN104214029A (en) * | 2014-08-29 | 2014-12-17 | 哈尔滨东安发动机（集团）有限公司 | Fuel nozzle |
| CN105783030A (en) * | 2016-04-29 | 2016-07-20 | 天津成立航空技术有限公司 | Fuel nozzle cylinder spiral pulverization device for aerospace engine and pulverization method of fuel nozzle cylinder spiral pulverization device |
| CN108150292A (en) * | 2017-11-20 | 2018-06-12 | 北京动力机械研究所 | Wide cone angle is atomized disc structure |
| CN109611888A (en) * | 2018-12-14 | 2019-04-12 | 中国航发沈阳发动机研究所 | A kind of emple hole |
| CN110701638A (en) * | 2019-08-30 | 2020-01-17 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Single-oil-way dual-purpose fuel nozzle |
| CN112303663A (en) * | 2019-07-29 | 2021-02-02 | 赛峰飞机发动机公司 | Injector head of a turbine engine comprising a swirl chamber internally delimited by a post |
| CN112781072A (en) * | 2021-01-29 | 2021-05-11 | 安徽应流航空科技有限公司 | Main fuel nozzle atomization structure |
| CN114034061A (en) * | 2021-09-03 | 2022-02-11 | 东方电气集团科学技术研究院有限公司 | Liquid fuel nozzle for dual-fuel combustion chamber of dual-radial swirler |
| CN114688526A (en) * | 2020-12-31 | 2022-07-01 | 大连理工大学 | Pre-film type gas-assisted atomizing nozzle with petal-shaped outlet |
-
2008
- 2008-05-12 CN CNU2008201149899U patent/CN201225656Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538016B (en) * | 2012-01-11 | 2014-11-05 | 哈尔滨工程大学 | Internal rotational flow dual fuel nozzle for chemical regenerative cycle |
| CN102538016A (en) * | 2012-01-11 | 2012-07-04 | 哈尔滨工程大学 | Internal rotational flow dual fuel nozzle for chemical regenerative cycle |
| CN104214029A (en) * | 2014-08-29 | 2014-12-17 | 哈尔滨东安发动机（集团）有限公司 | Fuel nozzle |
| CN105783030A (en) * | 2016-04-29 | 2016-07-20 | 天津成立航空技术有限公司 | Fuel nozzle cylinder spiral pulverization device for aerospace engine and pulverization method of fuel nozzle cylinder spiral pulverization device |
| CN105783030B (en) * | 2016-04-29 | 2018-10-19 | 天津成立航空技术有限公司 | A kind of aerospace engine fuel nozzle cylindrical screw atomizer and its atomization method |
| CN108150292B (en) * | 2017-11-20 | 2019-10-11 | 北京动力机械研究所 | Wide cone angle is atomized disc structure |
| CN108150292A (en) * | 2017-11-20 | 2018-06-12 | 北京动力机械研究所 | Wide cone angle is atomized disc structure |
| CN109611888A (en) * | 2018-12-14 | 2019-04-12 | 中国航发沈阳发动机研究所 | A kind of emple hole |
| CN112303663A (en) * | 2019-07-29 | 2021-02-02 | 赛峰飞机发动机公司 | Injector head of a turbine engine comprising a swirl chamber internally delimited by a post |
| CN112303663B (en) * | 2019-07-29 | 2023-09-01 | 赛峰飞机发动机公司 | Injector head for a turbine engine comprising a swirl chamber delimited internally by a post |
| CN110701638A (en) * | 2019-08-30 | 2020-01-17 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Single-oil-way dual-purpose fuel nozzle |
| CN114688526A (en) * | 2020-12-31 | 2022-07-01 | 大连理工大学 | Pre-film type gas-assisted atomizing nozzle with petal-shaped outlet |
| CN112781072A (en) * | 2021-01-29 | 2021-05-11 | 安徽应流航空科技有限公司 | Main fuel nozzle atomization structure |
| CN114034061A (en) * | 2021-09-03 | 2022-02-11 | 东方电气集团科学技术研究院有限公司 | Liquid fuel nozzle for dual-fuel combustion chamber of dual-radial swirler |
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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: 20090422 Termination date: 20160512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |