CN103134079B - Double-oil-circuit fuel nozzle - Google Patents
Double-oil-circuit fuel nozzle Download PDFInfo
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- CN103134079B CN103134079B CN201110388905.7A CN201110388905A CN103134079B CN 103134079 B CN103134079 B CN 103134079B CN 201110388905 A CN201110388905 A CN 201110388905A CN 103134079 B CN103134079 B CN 103134079B
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- oil circuit
- cyclone
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- auxiliary oil
- nozzle
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Abstract
The invention relates to a double-oil-circuit fuel nozzle, in particular to a double-oil-circuit large-spray-cone-angle fuel nozzle. The double-oil-circuit fuel nozzle mainly comprises a nozzle shell body, a main oil circuit nozzle, a main oil circuit swirler and a vice oil circuit swirler. A main oil circuit swirling chamber is formed by the main oil circuit swirl and an inner cavity of the main oil circuit nozzle, a vice oil circuit swirling chamber is formed by a head cone-shaped body of the vice oil circuit swirler and a convergence taper angle of the inner cavity of the main oil circuit swirler, and a cooling air channel is designed on the main oil circuit nozzle. The problem that an aero-engine combustor is wide in fuel supply range is well resolved, a spray cone angle of the fuel nozzle is increased by 10 degrees to 15 degrees, and the effects of nozzle cooling and nozzle surface carbon deposition blowing down are achieved.
Description
Technical field
The present invention relates to a kind of two oil way fuel spray nozzle; Refer more particularly to a kind of two oil circuit pressure atomization type fuel nozzles of large spray cone angle.
Background technology
General fuel nozzle is atomizer traditionally, and the burner of the firing equipment such as thermodynamic device, industrial furnace is used widely, and liquid fuel can be used as diesel oil, kerosene, heavy oil and Aalcohols fuel etc.Fuel nozzle is injected by oil burning jet in combustion chamber to carry out blending, atomization, burning with other medium such as compressed air etc.The fuel oil of fuel nozzle sprays, the power of atomization is formed by oil pump supercharging or high pressure draught blending.Fuel nozzle is divided into single oil circuit and two oil circuit, and two oil way fuel spray nozzle is divided into again two room single jet nozzle (tandem duplex burner) of two-way single chamber single jet fuel nozzle, two-way, the two spout fuel nozzle (duplex burner in parallel) in the two room of two-way.According to the design of its purposes and different nozzles can be selected.For above three kinds of two oil way fuel spray nozzles, the core texture of its major and minor oil circuit is all made up of tangential oil-feed tank or hole, spin chamber and spout three part.Most widely used at aviation field is at present two oil way fuel spray nozzle in parallel, especially in aero-engine.In order to adapt to the working range of aero-engine broadness, often adopting fuel feeding wide ranges, each state atomization quality is good and lean extinction limit is wide two oil way fuel spray nozzles come to combustion chamber fuel feeding.But when adopting the fuel nozzle of the two spout structure form of two oil circuit to combustion chamber fuel feeding, due to the length and width structure restriction of acceptor, cap jet and tangential oil-feed tank and by the restriction of dirt blocking in fuel oil, under the charge oil pressure condition of regulation, ensure and improve fuel oil supply, increasing spray cone angle, Curve guide impeller or redesign must be carried out to the structure of existing pair of oil way fuel spray nozzle.
Summary of the invention
The object of the invention is to be overcome above-mentioned prior art problem and carry out the pressure atomization formula fuel nozzle that Curve guide impeller goes out the large spray cone angle of a kind of pair of oil circuit of aviation engine chamber.
(1) technical problem that will solve
The present invention needs to solve aeroengine combustor buring room fuel feeding wide ranges, problem that fuel nozzle spray cone angle is large.Auxiliary oil circuit spray cone angle increases 10 ° ~ 15 °, and auxiliary oil circuit flow increases 30%.
(2) technical scheme
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
The two oil circuit pressure atomization type fuel nozzle of one of the present invention, mainly comprises nozzle body, working connection spout, working connection cyclone (doubling as auxiliary oil circuit spout) and auxiliary oil circuit cyclone composition.Auxiliary oil circuit cyclone is arranged in working connection cyclone, then is arranged on together on nozzle body, and working connection spout is arranged on the outside of main injection jet cyclone.
Described working connection spout is made up of working connection spout body and gas hood, and gas hood is installed on working connection spout body; Gas hood is designed with the nozzle air admission hole and nozzle gas hole that blow down ejecting opening surface carbon distribution, and nozzle is cooled; Working connection cyclone is outside forms working connection spin chamber with the inner chamber of working connection spout body, and the face of cylinder of working connection cyclone is designed with working connection tangential swirl groove; Auxiliary oil circuit cyclone head bullet is designed with auxiliary oil circuit tangential swirl groove, and the inner cone of auxiliary oil circuit cyclone bullet and working connection cyclone forms auxiliary oil circuit spin chamber.
Described two oil way fuel spray nozzles are by improving major and minor oil circuit cyclone.Improve auxiliary oil circuit hydrocyclone structure: strengthen rotating flow cone feature dimension and cone angle, strengthen cyclone recess diameter, increase the quantity of tangential slot, strengthen the tangential angle of tangential slot and symmetrical channels spacing; Improve working connection hydrocyclone structure: add major lumen convergence cone angle, increase a ring shaped step at inner chamber and restrain cone angle with inner chamber crossing, increasing spout outlet cone angle, shortening spout outlet conical surface axial length dimension and spout outlet straightway size.
Compared with prior art, the invention has the beneficial effects as follows:
Curve guide impeller draws through checking: under the condition that charge oil pressure remains unchanged, and the fuel delivery of auxiliary oil circuit increases by 30%, and the spray cone angle of auxiliary oil circuit increases 10 ° ~ 15 °, and working connection property retention is constant.When not changing nozzle exterior overall size, the shortcoming that the spray cone angle overcoming pressure atomization formula nozzle reduces with the increase of fuel flow.
Accompanying drawing explanation
Fig. 1 is two oil way fuel spray nozzle structure charts.
1-nozzle body 2-auxiliary oil circuit cyclone 3-working connection cyclone 4-working connection spout 5-gas hood 6-nozzle air admission hole 7-working connection spout body 8-nozzle gas hole
Fig. 2 is working connection cyclone sketch
9-working connection cyclone inner chamber convergence cone angle 10-working connection cyclone inner chamber step 11-working connection eddy flow groove 12-working connection cyclone outlet cone angle 13 working connection cyclone spout length of straigh line 14-cyclone spout outlet conical surface length
Fig. 3 is auxiliary oil circuit cyclone sketch
15-auxiliary oil circuit cyclone neck 16-auxiliary oil circuit eddy flow groove 17-auxiliary oil circuit cyclone eddy flow angle of the v-groove 18-auxiliary oil circuit cyclone eddy flow groove entrance external diameter 19-auxiliary oil circuit cyclone revolves launder outlet external diameter 20-auxiliary oil circuit cyclone bullet
Fig. 4 is auxiliary oil circuit cyclone (A is to diagram) eddy flow groove sketch
21-revolves launder outlet lateral symmetry spacing 22-and revolves the vertical symmetrical spacing of launder outlet
Detailed description of the invention
Below by specific embodiment, the present invention is further described.Below implement just descriptive, be not determinate, protection scope of the present invention can not be limited with this.
As shown in Figure 1, the two oil way fuel spray nozzle of one of the present invention forms primarily of nozzle body 1, auxiliary oil circuit cyclone 2, working connection cyclone 3 and working connection spout 4, auxiliary oil circuit cyclone 2 is arranged in working connection cyclone 3, be arranged on together again on nozzle body 1, then working connection spout 4 be arranged on the outside of main injection jet cyclone 3.
As shown in Fig. 1 Fig. 2, Fig. 3 and Fig. 4, working connection spout 4 is made up of gas hood 5 and working connection spout body 7, and gas hood 5 is installed on working connection spout body 7; Gas hood 5 is designed with the nozzle air admission hole 6 and nozzle gas hole 8 that blow down ejecting opening surface carbon distribution; The face of cylinder of working connection cyclone 3 is designed with working connection eddy flow groove 11; The bullet of auxiliary oil circuit cyclone 2 is designed with auxiliary oil circuit eddy flow groove 16.
The two oil way fuel spray nozzle of described one carries out auxiliary oil circuit cyclone Curve guide impeller: utilize the head bullet of auxiliary oil circuit cyclone 2 and working connection cyclone inner chamber to restrain cone angle 9 and form auxiliary oil circuit spin chamber, change the quantity of auxiliary oil circuit eddy flow groove 16, increase and revolve launder outlet lateral symmetry spacing 21 and revolve the vertical symmetrical spacing 22 of launder outlet, increase frustoconical bevel angle and the auxiliary oil circuit cyclone eddy flow angle of the v-groove 17 of auxiliary oil circuit cyclone bullet 21, increase auxiliary oil circuit cyclone eddy flow groove entrance external diameter 18 and auxiliary oil circuit cyclone revolve launder outlet external diameter 19, increase auxiliary oil circuit cyclone neck 15.
The two oil way fuel spray nozzle of described one carries out working connection cyclone Curve guide impeller: utilize working connection cyclone 3 inner chamber that is outside and working connection spout body 7 to form working connection spin chamber, increase working connection cyclone inner chamber convergence cone angle 9 and working connection cyclone outlet cone angle 12, reduce cyclone spout length of straigh line 13 and cyclone spout outlet conical surface length 14, increase cyclone inner chamber step 10.
The two oil way fuel spray nozzle of described one, its workflow is: increase working connection fuel manifold charge oil pressure, fuel oil enters working connection spin chamber by the working connection of nozzle, rotates through working connection eddy flow groove 11, by working connection spout spray enter combustion chamber atomization, with air blending burning; Increase auxiliary oil circuit fuel manifold charge oil pressure, fuel oil enters auxiliary oil circuit spin chamber by the auxiliary oil circuit of nozzle, rotates through auxiliary oil circuit eddy flow groove 16, to be sprayed to enter combustion chamber atomization, burn with air blending by auxiliary oil circuit spout; Air enters through nozzle air admission hole 6 and is flowed out by nozzle gas hole 8 and the gap between working connection spout body end face and gas hood, cools and blow down the carbon distribution of nozzle outer surface to nozzle outer surface.
Claims (1)
1. a two oil way fuel spray nozzle, comprises nozzle body (1), auxiliary oil circuit cyclone (2), working connection cyclone (3) and working connection spout (4), auxiliary oil circuit cyclone (2) is arranged in working connection cyclone (3), then is arranged on nozzle body (1) together, then working connection spout (4) is arranged on the outside of working connection cyclone (3), working connection spout (4) comprises gas hood (5) and working connection spout body (7), and gas hood (5) is installed on working connection spout body (7), gas hood (5) is designed with the nozzle air admission hole (6) and nozzle gas hole (8) that blow down ejecting opening surface carbon distribution, the face of cylinder of working connection cyclone (3) is designed with working connection eddy flow groove (11), the bullet of auxiliary oil circuit cyclone (2) is designed with auxiliary oil circuit eddy flow groove (16), it is characterized in that: utilize the head bullet of auxiliary oil circuit cyclone (2) and working connection cyclone inner chamber to restrain cone angle (9) and form auxiliary oil circuit spin chamber, change the quantity of auxiliary oil circuit eddy flow groove (16), increase auxiliary oil circuit revolves launder outlet lateral symmetry spacing (21) and auxiliary oil circuit revolves the vertical symmetrical spacing (22) of launder outlet, increase frustoconical bevel angle and the auxiliary oil circuit cyclone eddy flow angle of the v-groove (17) of auxiliary oil circuit cyclone bullet (20), increase auxiliary oil circuit cyclone eddy flow groove entrance external diameter (18) and auxiliary oil circuit cyclone revolve launder outlet external diameter (19), increase the diameter of auxiliary oil circuit cyclone neck (15),
Working connection cyclone (3) inner chamber that is outside and working connection spout body (7) is utilized to form working connection spin chamber, increase working connection cyclone inner chamber convergence cone angle (9) and working connection cyclone outlet cone angle (12), reduce working connection cyclone spout length of straigh line (13) and working connection cyclone spout outlet conical surface length (14), increase working connection cyclone inner chamber step (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110388905.7A CN103134079B (en) | 2011-11-30 | 2011-11-30 | Double-oil-circuit fuel nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110388905.7A CN103134079B (en) | 2011-11-30 | 2011-11-30 | Double-oil-circuit fuel nozzle |
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| Publication Number | Publication Date |
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| CN103134079A CN103134079A (en) | 2013-06-05 |
| CN103134079B true CN103134079B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110388905.7A Active CN103134079B (en) | 2011-11-30 | 2011-11-30 | Double-oil-circuit fuel nozzle |
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| CN (1) | CN103134079B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783032A (en) * | 2016-05-18 | 2016-07-20 | 贵州航空发动机研究所 | Wide-range fuel oil nozzle suitable for overhead work |
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| CN103423768B (en) * | 2013-08-09 | 2015-07-29 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of dual-fuel combustion chamber nozzle of combustion self bleed blow out system |
| CN106499559B (en) * | 2016-10-31 | 2019-07-12 | 北京动力机械研究所 | The double oil circuits swirl atomizer structure of major-minor oil circuit integrated design |
| CN107024347A (en) * | 2017-05-28 | 2017-08-08 | 西安成立航空制造有限公司 | A kind of tangential nozzle high-pressure test tool and its adjustment method |
| CN109140501B (en) * | 2017-06-28 | 2021-04-27 | 中国航发贵阳发动机设计研究所 | Double-oil-way double-nozzle centrifugal nozzle structure with double-layer air hood |
| CN107762699B (en) * | 2017-09-28 | 2019-07-23 | 中国航发动力股份有限公司 | A kind of double oil circuits fuel nozzle flow rate test tooling |
| CN107975428A (en) * | 2017-11-23 | 2018-05-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of double oil circuit swirl atomizer auxiliary oil circuit structures |
| FR3099547B1 (en) * | 2019-07-29 | 2021-10-08 | Safran Aircraft Engines | FUEL INJECTOR NOSE FOR TURBOMACHINE INCLUDING A ROTATION CHAMBER INTERNALLY DELIMITED BY A PIONEER |
| TR202006619A2 (en) | 2020-04-28 | 2021-11-22 | Ford Otomotiv Sanayi As | A FLUID CHARGER |
| CN112460636B (en) * | 2020-10-27 | 2022-04-08 | 中国船舶重工集团公司第七0三研究所 | Double-oil-way single-nozzle double-fuel nozzle |
| CN113028451B (en) * | 2021-03-23 | 2022-04-19 | 中国科学院工程热物理研究所 | Centrifugal nozzle and swirler integrated combustion chamber head structure |
| CN113266472B (en) * | 2021-05-18 | 2022-06-21 | 中国航发湖南动力机械研究所 | Fuel manifold with double-oil-way nozzle |
| CN114087627B (en) * | 2021-11-11 | 2023-01-20 | 中国航发贵州黎阳航空动力有限公司 | Fuel manifold nozzle of micro aeroengine and oil mixing test method thereof |
| CN114087626B (en) * | 2021-12-01 | 2022-09-09 | 北京动力机械研究所 | Fuel flow adjustable small cone angle circular seam nozzle |
| CN114543118B (en) * | 2022-02-21 | 2023-04-25 | 中国航发贵阳发动机设计研究所 | Centrifugal starting nozzle |
| CN114526498B (en) * | 2022-04-21 | 2022-07-08 | 成都中科翼能科技有限公司 | Single-inlet double-oil-way composite atomizing nozzle |
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| CN201740049U (en) * | 2010-08-23 | 2011-02-09 | 中国航空动力机械研究所 | Double-oil way fuel spray nozzle |
| CN202350096U (en) * | 2011-11-30 | 2012-07-25 | 贵州航空发动机研究所 | Double-oil circuit fuel nozzle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100162711A1 (en) * | 2008-12-30 | 2010-07-01 | General Electric Compnay | Dln dual fuel primary nozzle |
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| US6082113A (en) * | 1998-05-22 | 2000-07-04 | Pratt & Whitney Canada Corp. | Gas turbine fuel injector |
| CN1584316A (en) * | 2004-06-04 | 2005-02-23 | 徐小宁 | Fuel atomizing nozzles |
| CN101398186A (en) * | 2008-10-24 | 2009-04-01 | 北京大学 | Self-absorption rotational flow pneumatic atomization nozzle device |
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| CN105783032A (en) * | 2016-05-18 | 2016-07-20 | 贵州航空发动机研究所 | Wide-range fuel oil nozzle suitable for overhead work |
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| CN103134079A (en) | 2013-06-05 |
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Address after: 550000 No. 602, Yuntan North Road, guanshanhu District, Guiyang City, Guizhou Province Patentee after: AVIC GUIZHOU ENGINE DESIGN INSTITUTE Address before: 550081 No. 58, Yuntan North Road, Jinyang New District, Guiyang City, Guizhou Province Patentee before: GUIZHOU AERONAUTICAL ENGINE INSTITUTE |
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Addressee: Rao Yanglong Document name: Notification of qualified procedures |