CN202350096U - Double-oil circuit fuel nozzle - Google Patents
Double-oil circuit fuel nozzle Download PDFInfo
- Publication number
- CN202350096U CN202350096U CN2011204871874U CN201120487187U CN202350096U CN 202350096 U CN202350096 U CN 202350096U CN 2011204871874 U CN2011204871874 U CN 2011204871874U CN 201120487187 U CN201120487187 U CN 201120487187U CN 202350096 U CN202350096 U CN 202350096U
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- China
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- oil circuit
- cyclone
- working connection
- spout
- auxiliary oil
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Abstract
The utility model relates to a double-oil circuit fuel nozzle, in particular to a double-oil circuit big-spray cone angle fuel nozzle. The double-oil circuit fuel nozzle mainly consists of a nozzle body, a main oil circuit spout, a main oil circuit swirler and a secondary oil circuit swirler. The main oil circuit swirler and the inner cavity of the main oil circuit spout form a main oil circuit cyclone chamber; the head cone-shaped body of the secondary oil circuit swirler and the convergent cone angle of the inner cavity of the main oil circuit swirler form a secondary oil circuit cyclone chamber; and a cooling air runner is designed on the main oil circuit spout. The goals that the oil supply range of an aero-engine combustor is wide and the spray cone angle of the fuel nozzle is increased by 10-15 degrees are better achieved, and moreover, the effects of cooling the nozzle and blowing off carbon deposits on the surface of the spout are achieved.
Description
Technical field
The present invention relates to a kind of pair of oil circuit fuel nozzle; Refer more particularly to a kind of two oil circuit pressure atomization formula fuel nozzles of big spray cone angle.
Background technology
General fuel nozzle is atomizer traditionally, on the burner of firing equipments such as thermodynamic device, industrial furnace, is used widely, and can use liquid fuel such as diesel oil, kerosene, heavy oil and Aalcohols fuel etc.Fuel nozzle is fuel oil to be sprayed to get in the combustion chamber carry out blending, atomizing, burning with other medium such as compressed air etc.The fuel oil of fuel nozzle sprays, the power of atomizing is formed by oil pump supercharging or high pressure draught blending.Fuel nozzle is divided into single oil circuit and two oil circuits, and two oil circuit fuel nozzles are divided into two-way single chamber single jet fuel nozzle, the two chamber single jet nozzles (tandem duplex burner) of two-way, the two spout fuel nozzles (parallelly connected duplex burner) in the two chambers of two-way again.Can and select different nozzles for use according to the design of its purposes.For above three kinds of two oil circuit fuel nozzles, the core texture of its major and minor oil circuit all is made up of tangential oil-feed tank or hole, spin chamber and spout three parts.Most widely used at aviation field at present is the two oil circuit fuel nozzles of parallel connection, especially on aero-engine.In order to adapt to the broad working range of aero-engine, often adopt fuel feeding wide ranges, each state atomization quality is good and lean extinction limit is wide two oil circuit fuel nozzles to come to the combustion chamber fuel feeding.But when the fuel nozzle that adopts the two spout structure forms of two oil circuits is given the combustion chamber fuel feeding; Owing to receive the length and width structural limitations of major and minor spout and tangential oil-feed tank and the restriction of being stopped up by dirt in the fuel oil; Under the charge oil pressure condition of regulation; Guarantee and improve the fuel oil supply, strengthen spray cone angle, must improve design or design again the structure of existing pair of oil circuit fuel nozzle.
Summary of the invention
The objective of the invention is to be to overcome above-mentioned prior art problem and carry out and improve the pressure atomization formula fuel nozzle design a kind of pair of big spray cone angle of using the aeroengine combustor buring chamber of oil circuit.
The technical problem that (1) will solve
The present invention need solve aeroengine combustor buring chamber fuel feeding wide ranges, problem that the fuel nozzle spray cone angle is big.The auxiliary oil circuit spray cone angle increases 10 °～15 °, and the auxiliary oil circuit flow increases 30%.
(2) technical scheme
In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme:
A kind of pair of oil circuit pressure atomization formula fuel nozzle of the present invention mainly comprises nozzle body, working connection spout, working connection cyclone (double as auxiliary oil circuit spout) and auxiliary oil circuit cyclone composition.The auxiliary oil circuit cyclone is installed in the working connection cyclone, is installed in together on the nozzle body again, and the working connection spout is installed in 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 to be installed on the working connection spout body; On gas hood, be designed with the nozzle air admission hole and the nozzle gas hole that blow down the spout area carbon, and nozzle is cooled off; The outside inner chamber with working connection spout body of working connection cyclone constitutes the working connection spin chamber, on the face of cylinder of working connection cyclone, is designed with working connection tangential swirl groove; Be designed with auxiliary oil circuit tangential swirl groove on the auxiliary oil circuit cyclone head bullet, the inner cone of auxiliary oil circuit cyclone bullet and working connection cyclone constitutes the auxiliary oil circuit spin chamber.
Described pair of oil circuit fuel nozzle is through improving major and minor oil circuit cyclone.Improve the auxiliary oil circuit hydrocyclone structure: strengthen rotating flow cone feature dimension and cone angle, strengthen the cyclone recess diameter, increase the quantity of tangential slot, strengthen tangential slot tangential angle and symmetrical channels spacing; Improve the working connection hydrocyclone structure: strengthen inner chamber convergence cone angle, increase a ring shaped step and restrain cone angle at inner chamber and intersect, strengthen spout outlet cone angle, shorten spout and export conical surface axial length dimension and spout outlet straightway size with inner chamber.
Compared with prior art, the invention has the beneficial effects as follows:
Improving design draws through checking: under the condition that charge oil pressure remains unchanged, the fuel delivery of auxiliary oil circuit increases by 30%, and the spray cone angle of auxiliary oil circuit increases 10 °～15 °, and the working connection property retention is constant.Under the situation that does not change nozzle exterior contour size, the shortcoming that the spray cone angle that has overcome pressure atomization formula nozzle reduces with the increase of fuel flow.
Description of drawings
Fig. 1 is two oil circuit fuel 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 a 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 spouts outlet conical surface length
Fig. 3 is an 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 inlet external diameter 19-auxiliary oil circuit cyclone eddy flow groove outlet external diameter 20-auxiliary oil circuit cyclone bullet
Fig. 4 is auxiliary oil circuit cyclone (A is to a diagrammatic sketch) eddy flow groove sketch
21-eddy flow groove outlet lateral symmetry spacing 22-eddy flow groove exports vertical symmetrical spacing
The specific embodiment
Through specific embodiment the present invention is done further detailed description below.It is descriptive below implementing, and is not determinate, can not limit protection scope of the present invention with this.
As shown in Figure 1; A kind of pair of oil circuit fuel nozzle of the present invention mainly is made up of nozzle body 1, auxiliary oil circuit cyclone 2, working connection cyclone 3 and working connection spout 4; Auxiliary oil circuit cyclone 2 is installed in the working connection cyclone 3; Be installed in together again on the nozzle body 1, then working connection spout 4 be installed in the outside of main injection jet cyclone 3.
Like Fig. 1 Fig. 2, Fig. 3 and shown in Figure 4, working connection spout 4 is made up of gas hood 5 and working connection spout body 7, and gas hood 5 is to be installed on the working connection spout body 7; On gas hood 5, be designed with the nozzle air admission hole 6 and nozzle gas hole 8 that blow down the spout area carbon; On the face of cylinder of working connection cyclone 3, be designed with working connection eddy flow groove 11; On the bullet of auxiliary oil circuit cyclone 2, be designed with auxiliary oil circuit eddy flow groove 16.
Described a kind of pair of oil circuit fuel nozzle carries out the auxiliary oil circuit cyclone and improves design: utilize the head bullet of auxiliary oil circuit cyclone 2 and working connection cyclone inner chamber convergence cone angle 9 to constitute the auxiliary oil circuit spin chamber; Change the quantity of auxiliary oil circuit eddy flow groove 16; Increase eddy flow groove outlet lateral symmetry spacing 21 and export vertical symmetrical spacing 22 with the eddy flow groove; Increase the conical surface 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 inlet external diameter 18 and auxiliary oil circuit cyclone eddy flow groove outlet external diameter 19, increase auxiliary oil circuit cyclone neck 15.
Described a kind of pair of oil circuit fuel nozzle carries out the working connection cyclone and improves design: utilize working connection cyclone 3 outside inner chambers with working connection spout body 7 to constitute the 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.
Described a kind of pair of oil circuit fuel nozzle; Its workflow is: increase working connection fuel manifold charge oil pressure; Fuel oil gets into the working connection spin chamber through the working connection of nozzle, rotates through working connection eddy flow groove 11, gets into the combustion chamber atomizing, also burns with the air blending through the injection of working connection spout; Increase auxiliary oil circuit fuel manifold charge oil pressure, fuel oil gets into the auxiliary oil circuit spin chamber through the auxiliary oil circuit of nozzle, rotates through auxiliary oil circuit eddy flow groove 16, gets into the combustion chamber atomizing, also burns with the air blending through the injection of auxiliary oil circuit spout; Air flows out through 6 entering of nozzle air admission hole and by the gap between nozzle gas hole 8 and working connection spout body end face and the gas hood, nozzle outer surface is cooled off and blows down the carbon distribution of nozzle outer surface.
Claims (3)
1. a kind of pair of oil circuit fuel nozzle of the present invention mainly is made up of nozzle body (1), auxiliary oil circuit cyclone (2), working connection cyclone (3) and working connection spout (4); It is characterized in that: auxiliary oil circuit cyclone (2) is installed in the working connection cyclone (3), is installed in together on the nozzle body (1) again, then working connection spout (4) is installed in the outside of main injection jet cyclone (3); Working connection spout (4) is made up of gas hood (5) and working connection spout body (7), and gas hood (5) is installed on the working connection spout body (7); On gas hood (5), be designed with the nozzle air admission hole (6) and the nozzle gas hole (8) that blow down the spout area carbon; On the face of cylinder of working connection cyclone (3), be designed with working connection eddy flow groove (11); On the bullet of auxiliary oil circuit cyclone (2), be designed with auxiliary oil circuit eddy flow groove (16).
2. a kind of pair of oil circuit fuel nozzle according to claim 1; It is characterized in that: utilize the head bullet of auxiliary oil circuit cyclone (2) and working connection cyclone inner chamber convergence cone angle (9) to constitute the auxiliary oil circuit spin chamber; Change the quantity of auxiliary oil circuit eddy flow groove (16); Increase eddy flow groove outlet lateral symmetry spacing (21) and eddy flow groove and export vertical symmetrical spacing (22); Increase the conical surface 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 inlet external diameter (18) and auxiliary oil circuit cyclone eddy flow groove outlet external diameter (19), increase auxiliary oil circuit cyclone neck (15).
3. a kind of pair of oil circuit fuel nozzle according to claim 1; It is characterized in that: utilize the outside inner chamber of working connection cyclone (3) to constitute the working connection spin chamber with working connection spout body (7); 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204871874U CN202350096U (en) | 2011-11-30 | 2011-11-30 | Double-oil circuit fuel nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204871874U CN202350096U (en) | 2011-11-30 | 2011-11-30 | Double-oil circuit fuel nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350096U true CN202350096U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204871874U Expired - Fee Related CN202350096U (en) | 2011-11-30 | 2011-11-30 | Double-oil circuit fuel nozzle |
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| CN (1) | CN202350096U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134079A (en) * | 2011-11-30 | 2013-06-05 | 贵州航空发动机研究所 | Double-oil-circuit fuel nozzle |
| CN103175220A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Dual-fuel nozzle used for chemical regenerative cycle |
| CN103175221A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Gas-assisted dual-fuel nozzle used for chemical regenerative cycle |
| CN103175222A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Air combustion-supporting dual-fuel nozzle used for chemical regenerative cycle |
| CN105066176A (en) * | 2015-08-14 | 2015-11-18 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
| CN106705123A (en) * | 2016-12-20 | 2017-05-24 | 成都航利航空科技有限责任公司 | Welding structure type fuel spray nozzle of engine |
| CN108087907A (en) * | 2017-12-17 | 2018-05-29 | 北京工业大学 | A kind of double oil circuit rotarytype injectors |
| CN108916912A (en) * | 2018-05-08 | 2018-11-30 | 北京航空航天大学 | A kind of pre-combustion grade uses the low emission combustor head of cooling anti-carbon deposition structure |
| CN109140502A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | A kind of built-in fuel manifold for conveying and being atomized for double oil circuits fuel oil |
| CN110617499A (en) * | 2019-09-19 | 2019-12-27 | 西安成立航空制造有限公司 | Protection method for carbon deposition of fuel nozzle |
| CN111059574A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院工程热物理研究所 | Swirl cup type dual-fuel air atomizing nozzle structure |
| 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 |
| CN114688525A (en) * | 2020-12-31 | 2022-07-01 | 大连理工大学 | Spray nozzle |
-
2011
- 2011-11-30 CN CN2011204871874U patent/CN202350096U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134079B (en) * | 2011-11-30 | 2014-12-17 | 贵州航空发动机研究所 | Double-oil-circuit fuel nozzle |
| CN103134079A (en) * | 2011-11-30 | 2013-06-05 | 贵州航空发动机研究所 | Double-oil-circuit fuel nozzle |
| CN103175220A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Dual-fuel nozzle used for chemical regenerative cycle |
| CN103175221A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Gas-assisted dual-fuel nozzle used for chemical regenerative cycle |
| CN103175222A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Air combustion-supporting dual-fuel nozzle used for chemical regenerative cycle |
| CN103175222B (en) * | 2013-03-19 | 2014-12-17 | 哈尔滨工程大学 | Air combustion-supporting dual-fuel nozzle used for chemical regenerative cycle |
| CN103175220B (en) * | 2013-03-19 | 2015-09-23 | 哈尔滨工程大学 | A kind of dual fuel nozzle for chemical regenerative cycle |
| CN105066176A (en) * | 2015-08-14 | 2015-11-18 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
| CN105066176B (en) * | 2015-08-14 | 2017-05-24 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
| CN106705123A (en) * | 2016-12-20 | 2017-05-24 | 成都航利航空科技有限责任公司 | Welding structure type fuel spray nozzle of engine |
| CN109140502A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | A kind of built-in fuel manifold for conveying and being atomized for double oil circuits fuel oil |
| CN108087907A (en) * | 2017-12-17 | 2018-05-29 | 北京工业大学 | A kind of double oil circuit rotarytype injectors |
| CN108087907B (en) * | 2017-12-17 | 2019-12-03 | 北京工业大学 | A kind of double oil circuits rotarytype injector |
| CN108916912A (en) * | 2018-05-08 | 2018-11-30 | 北京航空航天大学 | A kind of pre-combustion grade uses the low emission combustor head of cooling anti-carbon deposition structure |
| 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 |
| CN110617499A (en) * | 2019-09-19 | 2019-12-27 | 西安成立航空制造有限公司 | Protection method for carbon deposition of fuel nozzle |
| CN111059574A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院工程热物理研究所 | Swirl cup type dual-fuel air atomizing nozzle structure |
| CN111059574B (en) * | 2019-12-31 | 2022-01-25 | 中国科学院工程热物理研究所 | Swirl cup type dual-fuel air atomizing nozzle structure |
| CN114688525A (en) * | 2020-12-31 | 2022-07-01 | 大连理工大学 | Spray nozzle |
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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: 20120725 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |