CN108443911A - A kind of orifice-plate type air atomizer spray nozzle - Google Patents
A kind of orifice-plate type air atomizer spray nozzle Download PDFInfo
- Publication number
- CN108443911A CN108443911A CN201810064663.8A CN201810064663A CN108443911A CN 108443911 A CN108443911 A CN 108443911A CN 201810064663 A CN201810064663 A CN 201810064663A CN 108443911 A CN108443911 A CN 108443911A
- Authority
- CN
- China
- Prior art keywords
- orifice
- fuel
- nozzle
- type air
- nozzle body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007921 spray Substances 0.000 title claims abstract description 23
- 239000000446 fuel Substances 0.000 claims abstract description 38
- 238000000889 atomisation Methods 0.000 claims abstract description 28
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 230000008602 contraction Effects 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000007812 deficiency Effects 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
Abstract
The invention discloses a kind of orifice-plate type air atomizer spray nozzles, to solve the problems, such as the fuel-oil atmozation currently occurred deficiency.The nozzle body, annularly, the downstream of the nozzle body have fuel jet orifice；Nozzle chamber is formed inside the nozzle body；The orifice plate is fixed on the upside of the nozzle chamber, the nozzle chamber is divided into primary atomization area and secondary-atomizing area, the orifice plate has primary atomization hole；The fuel jet orifice is located at secondary-atomizing area downstream；The cyclone is arranged in secondary-atomizing area upstream；The fuel passage is connected on the nozzle body, for supplying liquid fuel.After the orifice-plate type air atomizer spray nozzle of the present invention carries out primary atomization by orifice plate to liquid fuel, air is set to generate eddy flow by cyclone again, the strong shear action of rotational flow air carries out secondary-atomizing to liquid fuel, optimize fuel atomization effect, good fuel-oil atmozation prevents fuel part excessively rich, reduces pollutant emission.
Description
Technical field
The invention belongs to gas-turbine combustion chamber fields, are related to a kind of air atomizer spray nozzle, and in particular to a kind of orifice-plate type
Air atomizer spray nozzle can carry out secondary-atomizing to fuel.
Background technology
Gas turbine combustors use fuel nozzle and fuel-air mixer, keep fuel mixed with compressed air
It closes and burns.To reduce smog and other undesirable byproducts and making efficiency of combustion highest, generally before burning, to make combustion
Material is pre-mixed in fuel-air mixer with air.In order to generate effective and complete burning, Fuel-air mixing
Device is designed to make fuel atomization and fuel is made to be pre-mixed with air.Existing combustion chamber burner technology mainly passes through diaphragm type air
Atomizer realizes fuel-oil atmozation, fuel oil is first formed oil film, then act on by the intensive shear of rotational flow air, destroys oil film
Surface tension, it is small oil droplet to make oil film breaking.However above-mentioned air atomizer spray nozzle due to only to oil film implement primary fragmentation, still
There is a problem of fuel-oil atmozation deficiency.
Invention content
It is in view of the shortcomings of the prior art and insufficient, the object of the present invention is to provide a kind of orifice-plate type air atomizer spray nozzle, with
It solves the problems, such as the fuel-oil atmozation currently occurred deficiency, after carrying out primary atomization to liquid fuel by orifice plate, then passes through eddy flow
Device makes air generate eddy flow, and the strong shear action of rotational flow air carries out secondary-atomizing, optimization fuel-oil atmozation effect to liquid fuel
Fruit, good fuel-oil atmozation prevent fuel part excessively rich, reduce pollutant emission.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of orifice-plate type air atomizer spray nozzle, including nozzle body, which is characterized in that
The nozzle body is integrally cylindrical in shape, and front end is closed using a lid, is set above the side wall of the nozzle body
A fuel passage is set, the inner space of the nozzle body forms a nozzle chamber, the top fixed setting of the nozzle chamber
The nozzle chamber is divided into primary atomization area and secondary-atomizing area by one orifice plate, the orifice plate, and array is arranged on the orifice plate
It is multiple substantially according to the inclined primary atomization hole of same direction, the primary atomization area is connected to the fuel passage；
A fuel jet orifice, the fuel jet orifice and the secondary mist is axially arranged along it in the downstream of the nozzle body
Change area to be connected to and be located at the downstream in the secondary-atomizing area；
One cyclone is set on the lid of the nozzle body front end, and the cyclone is arranged in the secondary-atomizing area
Trip, the eddy flow direction of the cyclone are opposite with the inclined direction in primary atomization hole.
Optionally, the aperture in the primary atomization hole is not more than 2mm.
Optionally, the cyclone is axial swirler.
Optionally, the aperture of the fuel spray spray orifice is not more than 2mm.
Optionally, the primary atomization hole is tangential hole, and inclined direction is opposite with the eddy flow direction of the cyclone.
Optionally, a diversion cavity is arranged in the downstream of the nozzle body, and the diversion cavity includes the contraction positioned at upstream
Changeover portion and flat segments positioned at downstream, the fuel jet orifice be arranged in the end of the flat segments, the changeover portion that shrinks
Inlet diameter is substantially suitable with the radial dimension of the cyclone.
Compared with the existing technology, the advantageous effect of orifice-plate type air atomizer spray nozzle of the invention：Liquid is fired by orifice plate
Expect after carrying out primary atomization, then so that air is generated eddy flow by cyclone, the strong shear action of rotational flow air is to liquid fuel
Secondary-atomizing is carried out, fuel atomization effect is optimized, good fuel-oil atmozation prevents fuel part excessively rich, reduces pollutant emission.
Description of the drawings
Fig. 1 is the section view of the orifice-plate type air atomizer spray nozzle of the present invention；
Fig. 2 is the section view of the orifice plate in Fig. 1.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, it is illustrated with reference to embodiment,
Example is illustrated in the accompanying drawings.In the following description when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different attached drawings indicate phase
Same or similar element.
Refering to what is shown in Fig. 1, the orifice-plate type air atomizer spray nozzle applied to gas-turbine combustion chamber 20 of the embodiment of the present invention
21, including nozzle body 22, thickness 2mm be integrally cylindrical in shape, front end uses lid closing, the downstream of nozzle body 22
End 23 has fixed fuel jet orifice 24 by welding；22 inside of outer nozzle wall forms nozzle chamber 25.Nozzle body
A diversion cavity is arranged in 22 downstream 23, and diversion cavity includes the contraction changeover portion positioned at upstream and the flat segments positioned at downstream, combustion
Material spray orifice 24 be arranged shunk in the end of flat segments changeover portion inlet diameter it is substantially suitable with the radial dimension of cyclone 31,
Reduce nozzle interior flow resistance.
Orifice plate 26 is fixed on 25 upside of nozzle chamber, nozzle chamber 25 is divided into primary atomization by welding
Area 28 and secondary-atomizing area 29；Orifice plate 26 has primary atomization hole 27, and 27 aperture of primary atomization hole is 2mm, substantially according to same
Inclined direction is uniform sequential to be distributed on orifice plate 26, and fuel is resolved into oil droplet, is primary atomization；Fuel jet orifice 24 is located at two
29 downstream of secondary range of atomization, 24 aperture of fuel jet orifice are 3mm, acted on by the intensive shear of air oil droplet is further broken for it is small
Oil droplet, small oil droplet enters downstream by fuel jet orifice 24 combustion zone after being sufficiently mixed with air are burnt.
Cyclone 31 is arranged on the lid of 22 front end of nozzle body, and positioned at the upstream in secondary-atomizing area 29, eddy flow
Direction on the contrary, be connected by welding with outer nozzle wall 22, makes air generate rotation with the inclined direction in primary atomization hole 27
Stream, strengthens the shear action of air, to obtain better secondary-atomizing effect.
Fuel passage 32 is connected on nozzle body 22, in a welding manner for supplying liquid fuel.
Refering to what is shown in Fig. 2, in a preferred embodiment, primary atomization hole 27 is tangential hole, aperture 2mm, by cutting
To primary atomization hole 27 so that small oil droplet is entered secondary-atomizing area 29, eddy flow direction and air swirl direction phase in a manner of eddy flow
Instead, to generate oil gas head-on collision, to obtain better secondary-atomizing effect.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of the claims
It is accurate.
Claims (6)
1. a kind of orifice-plate type air atomizer spray nozzle, including nozzle body, which is characterized in that
The nozzle body is integrally cylindrical in shape, and front end is closed using a lid, setting one above the side wall of the nozzle body
The inner space of fuel passage, the nozzle body forms a nozzle chamber, and a hole is fixedly installed in the top of the nozzle chamber
The nozzle chamber is divided into primary atomization area and secondary-atomizing area by plate, the orifice plate, and array arrangement is multiple on the orifice plate
Substantially according to the inclined primary atomization hole of same direction, the primary atomization area is connected to the fuel passage；
A fuel jet orifice, the fuel jet orifice and the secondary-atomizing area is axially arranged along it in the downstream of the nozzle body
It is connected to and is located at the downstream in the secondary-atomizing area；
One cyclone is set on the lid of the nozzle body front end, the cyclone is arranged in secondary-atomizing area upstream,
The eddy flow direction of the cyclone is opposite with the inclined direction in primary atomization hole.
2. the orifice-plate type air atomizer spray nozzle according to the claims, which is characterized in that the hole in the primary atomization hole
Diameter is not more than 2mm.
3. the orifice-plate type air atomizer spray nozzle according to the claims, which is characterized in that the cyclone is axial revolves
Flow device.
4. the orifice-plate type air atomizer spray nozzle according to the claims, which is characterized in that the hole of the fuel spray spray orifice
Diameter is not more than 2mm.
5. the orifice-plate type air atomizer spray nozzle according to the claims, which is characterized in that the primary atomization hole is to cut
Xiang Kong, inclined direction are opposite with the eddy flow direction of the cyclone.
6. according to the orifice-plate type air atomizer spray nozzle according to the claims, which is characterized in that optionally, the nozzle
A diversion cavity is arranged in the downstream of ontology, and the diversion cavity includes positioned at the contraction changeover portion of upstream and positioned at the straight of downstream
Section, the fuel jet orifice are arranged in the end of the flat segments, the inlet diameter for shrinking changeover portion substantially with the eddy flow
The radial dimension of device is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064663.8A CN108443911B (en) | 2018-01-23 | 2018-01-23 | Orifice plate type air atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064663.8A CN108443911B (en) | 2018-01-23 | 2018-01-23 | Orifice plate type air atomizing nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443911A true CN108443911A (en) | 2018-08-24 |
| CN108443911B CN108443911B (en) | 2020-06-19 |
Family
ID=63191151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810064663.8A Expired - Fee Related CN108443911B (en) | 2018-01-23 | 2018-01-23 | Orifice plate type air atomizing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443911B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519315A (en) * | 2018-10-16 | 2019-03-26 | 安徽省飞腾航空科技有限公司 | A kind of light aircraft two stroke engine atomizer and its working method |
| CN111503658A (en) * | 2019-01-03 | 2020-08-07 | 通用电气公司 | Fuel injector heat exchanger assembly |
| CN112031936A (en) * | 2020-08-20 | 2020-12-04 | 康锰 | High-integration gas turbine generator set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394223A (en) * | 1971-08-10 | 1975-05-14 | Lucas Industries Ltd | Flame tubes |
| CN2754736Y (en) * | 2004-12-03 | 2006-02-01 | 中国石油化工集团公司 | Atomizing feeding nozzle |
| CN201381920Y (en) * | 2009-03-05 | 2010-01-13 | 张晗 | Electric-controlled oil spray nozzle orifice plate |
| US20120227408A1 (en) * | 2011-03-10 | 2012-09-13 | Delavan Inc. | Systems and methods of pressure drop control in fluid circuits through swirling flow mitigation |
| CN104373962A (en) * | 2014-10-28 | 2015-02-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Blade type air inlet swirl nozzle for combustion chamber of gas turbine |
| CN105042638A (en) * | 2015-06-25 | 2015-11-11 | 中国科学院工程热物理研究所 | Two-oil-way three-air-way multi-rotational-flow air atomizing nozzle structure |
-
2018
- 2018-01-23 CN CN201810064663.8A patent/CN108443911B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394223A (en) * | 1971-08-10 | 1975-05-14 | Lucas Industries Ltd | Flame tubes |
| CN2754736Y (en) * | 2004-12-03 | 2006-02-01 | 中国石油化工集团公司 | Atomizing feeding nozzle |
| CN201381920Y (en) * | 2009-03-05 | 2010-01-13 | 张晗 | Electric-controlled oil spray nozzle orifice plate |
| US20120227408A1 (en) * | 2011-03-10 | 2012-09-13 | Delavan Inc. | Systems and methods of pressure drop control in fluid circuits through swirling flow mitigation |
| CN104373962A (en) * | 2014-10-28 | 2015-02-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Blade type air inlet swirl nozzle for combustion chamber of gas turbine |
| CN105042638A (en) * | 2015-06-25 | 2015-11-11 | 中国科学院工程热物理研究所 | Two-oil-way three-air-way multi-rotational-flow air atomizing nozzle structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519315A (en) * | 2018-10-16 | 2019-03-26 | 安徽省飞腾航空科技有限公司 | A kind of light aircraft two stroke engine atomizer and its working method |
| CN111503658A (en) * | 2019-01-03 | 2020-08-07 | 通用电气公司 | Fuel injector heat exchanger assembly |
| US11029029B2 (en) | 2019-01-03 | 2021-06-08 | General Electric Company | Fuel injector heat exchanger assembly |
| CN112031936A (en) * | 2020-08-20 | 2020-12-04 | 康锰 | High-integration gas turbine generator set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108443911B (en) | 2020-06-19 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |