CN111706878A - Double oil-way opposite-impact direct-injection type nozzle - Google Patents
Double oil-way opposite-impact direct-injection type nozzle Download PDFInfo
- Publication number
- CN111706878A CN111706878A CN202010483474.1A CN202010483474A CN111706878A CN 111706878 A CN111706878 A CN 111706878A CN 202010483474 A CN202010483474 A CN 202010483474A CN 111706878 A CN111706878 A CN 111706878A
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- Prior art keywords
- oil
- central
- wall
- oil way
- injection nozzle
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Classifications
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- 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
- F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention provides a double-oil-path opposite-impact direct-injection type nozzle, which relates to the field of combustion chambers of gas turbines and comprises a central oil path and an outer oil path, wherein an expansion nozzle is arranged at the tail end of the outer wall of the outer oil path, a support frame is arranged at the opening position of the central oil path, a first rotating bearing is arranged on the support frame, a rotating shaft is arranged on the first rotating bearing, a plurality of stirring rods are arranged on the rotating shaft, an isolation net is arranged on one side, located on the stirring rods, of the rotating shaft, an outlet support is fixedly arranged at the tail end of the expansion nozzle. The nozzle provided by the invention is provided with double oil paths, so that fuel oil is crushed in a collision manner, the fuel oil can be crushed for the second time through the arrangement of the stirring rod, and the fuel oil is driven by the rotating shaft to rotate rapidly through the arrangement of the isolation net to be crushed for the third time.
Description
Technical Field
The invention relates to the field of combustion chambers of gas turbines, in particular to a double-oil-way opposite-impact direct-injection nozzle.
Background
The basic performance and structural distribution of modern aeroengine combustors have reached a relatively high level, but there are still a lot of difficulties and challenges for the modern aeroengine combustors, so there is still a certain room for improvement in structural design and performance, such as the development and application of new materials, new processes, new structures, new concepts, which are the source of the continuous improvement of the technology.
In order to improve the performance of an aircraft engine combustion chamber, the internal fuel atomization effect is an important part, the fuel atomization effect determines the working performance of the combustion chamber, fuel and air are mixed completely, and the fuel is distributed uniformly in space, so that the research on fuel atomization is an important part in the research on the aircraft engine combustion chamber.
The patent number is CN201910153702.6 double-oil-way opposite-flushing direct injection type nozzle, the whole form of the jet nozzle is a direct injection type jet nozzle, fuel is conveyed into the jet nozzle through upstream pressurization, the jet nozzle is provided with a central oil way and an outer ring oil way which are used as conveying oil ways, at the tail end and an expansion section of a straight section of the jet nozzle, the fuel of the outer ring oil way reversely enters the central oil way, and the two fuel ways are collided and crushed. The fuel oil is crushed simply by collision of the fuel oil between the central oil way and the outer ring oil way, the mode is too simple, and the atomization effect of the fuel oil is poor.
Disclosure of Invention
The invention aims to provide a double-oil-path opposite-flushing direct-injection type nozzle to solve the technical problem.
In order to solve the technical problems, the invention adopts the following technical scheme: the double-oil-way opposite-impact direct-injection type nozzle comprises a central oil way and an outer oil way, wherein a central oil way outer wall is arranged on the outer side of the central oil way, an outer oil way outer wall is arranged on the outer side of the outer oil way, the tail end of the outer oil way is of a closed structure, an inclined injection hole and a rectangular inlet are formed in the position, close to the tail end of the outer oil way, of the central oil way outer wall, an expansion air injection nozzle is arranged at the tail end of the outer oil way outer wall, the inner side wall of the expansion air injection nozzle is tightly welded with the central oil way outer wall, a support frame is arranged at the opening position of the central oil way, a first rotating bearing is arranged at the central position of the support frame, a rotating shaft is arranged on the first rotating bearing along the central axis position, a plurality of stirring rods are arranged on the, the fixed exit support that is provided with in end of expansion jet nozzle, exit support's inboard central point puts and is provided with second rolling bearing, and the axis of rotation right-hand member installs at second rolling bearing, actuating motor is installed in exit support's the outside, and actuating motor's output is connected with the input transmission of axis of rotation, second rolling bearing and actuating motor's the outside all is provided with the sealed cowling.
Preferably, the outer wall of the central oil passage is of a cylindrical barrel structure.
Preferably, the stirring rods are provided with eight stirring rods in total and distributed in an annular array along the axis of the rotating shaft.
Preferably, the inside of puddler is provided with the air duct, evenly be provided with a plurality of jet-propelled nozzles on the lateral wall of puddler, install the check valve on the jet-propelled nozzle, the inside of axis of rotation is provided with the gas-supply pipe, air duct and gas-supply pipe swing joint, and be connected with the air pump on the gas-supply pipe.
Preferably, the divergent angle of the divergent air injection nozzle is 8 to 10 °.
Preferably, the gas pipe is movably connected with the rotating shaft.
Preferably, the inner radius of the central oil way is 2-5 mm, the outer oil way is concentric with the central oil way, and the distance between the inner wall of the outer oil way and the outer wall of the central oil way is 0.5-1 mm.
Preferably, an inclined baffle is arranged on the inner wall of the expansion air injection nozzle towards the direction of the outlet support.
The invention has the beneficial effects that:
the jet nozzle provided by the invention is provided with double oil ways, comprising a central oil way and an outer oil way, wherein outer ring fuel oil reversely enters the central oil way at an expansion section, the fuel oil is collided and crushed, the fuel oil atomization effect can be effectively improved, the fuel oil entering the central oil way from the outer oil way is collided with the fuel oil of the central oil way through the arrangement of the inclined jet hole and the rectangular inlet, the fuel oil can be secondarily crushed through the arrangement of the stirring rod, the fuel oil is rapidly rotated under the driving of the rotating shaft through the arrangement of the isolation net, the fuel oil is crushed for the third time, the fuel oil can be atomized to the maximum extent, and the performance of an engine combustion chamber is obviously improved.
Drawings
FIG. 1 is a schematic perspective view of a dual-channel opposite-flushing direct-injection nozzle according to the present invention;
FIG. 2 is a schematic cross-sectional view of the center axis of the dual oil path opposed jet direct injection nozzle of the present invention;
FIG. 3 is a schematic perspective view of an isolation net according to the present invention;
FIG. 4 is a schematic front view of a stirring rod according to the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4 according to the present invention;
reference numerals: 1. a central oil passage; 2. an outer oil path; 3. the outer wall of the central oil way; 4. the outer wall of the outer oil way; 5. inclined shooting hole; 6. a rectangular inlet; 7. expanding the air injection nozzle; 8. a support frame; 9. a first rotating bearing; 10. a rotating shaft; 11. a stirring rod; 12. a fixing ring; 13. an isolation net; 14. an outlet support; 15. a second rotary bearing; 16. a drive motor; 17. a sealing cover; 18. an air duct; 19. a gas injection nozzle; 20. a one-way valve; 21. a gas delivery pipe; 22. the baffle is inclined.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-3, the dual oil path opposite-flushing direct injection nozzle comprises a central oil path 1 and an outer oil path 2, a central oil path outer wall 3 is arranged on the outer side of the central oil path 1, an outer oil path outer wall 4 is arranged on the outer side of the outer oil path 2, the end of the outer oil path 2 is of a closed structure, an inclined injection hole 5 and a rectangular inlet 6 are arranged at the position of the central oil path outer wall 3 close to the end of the outer oil path 2, an expansion air injection nozzle 7 is arranged at the end of the outer oil path outer wall 4, the inner side wall of the expansion air injection nozzle 7 is tightly welded with the central oil path outer wall 3, a support frame 8 is arranged at the opening position of the central oil path 1, a first rotating bearing 9 is arranged at the central position of the support frame 8, a rotating shaft 10 is arranged on the first rotating bearing 9 along the central axis, a plurality of stirring rods, one side that axis of rotation 10 is located puddler 11 is provided with isolated net 13, the fixed exit support 14 that is provided with in end of expansion air injection nozzle 7, the inboard central point of exit support 14 puts and is provided with second rolling bearing 15, and the axis of rotation 10 right-hand member is installed at second rolling bearing 15, driving motor 16 is installed in the outside of exit support 14, and driving motor 16's output is connected with the input transmission of axis of rotation 10, second rolling bearing 15 and driving motor 16's the outside all is provided with sealed cowling 17.
The working principle is as follows: the fuel oil is pressurized and then is divided into two parts at the inlet of the jet nozzle to enter the interior of the jet nozzle, wherein the two parts comprise a central oil path 1 and an outer oil path 2, the fuel oil in the outer oil path 2 can be obliquely sprayed into the central oil path 1 along an oblique injection hole 5 and a rectangular inlet 6 because the oil paths are closed, when the fuel oil is injected into the central oil path 1, the two parts of fuel oil collide to cause the primary crushing of the fuel oil, then the fuel oil enters an expansion jet nozzle 7 section, a driving motor 16 works to drive a rotating shaft 10 to rotate rapidly, a stirring rod 11 carries out the secondary crushing on the fuel oil entering the expansion jet nozzle 7, then the fuel oil passes through an isolation net 13, the isolation net 13 rotates under the driving of the rotating shaft 10, the fuel oil is crushed in the third step, the surface fluctuation of the fuel oil is more violent, and the fuel oil injected by the jet nozzle is difficult to generate liquid columns and is directly crushed into, thereby shortening the jet distance, leading the fuel oil atomization and obviously improving the evaporation effect.
Example 2
As shown in fig. 1-5, the dual oil path opposite-flushing direct injection nozzle comprises a central oil path 1 and an outer oil path 2, a central oil path outer wall 3 is arranged on the outer side of the central oil path 1, an outer oil path outer wall 4 is arranged on the outer side of the outer oil path 2, the end of the outer oil path 2 is of a closed structure, an inclined injection hole 5 and a rectangular inlet 6 are arranged at the position of the central oil path outer wall 3 close to the end of the outer oil path 2, an expansion air injection nozzle 7 is arranged at the end of the outer oil path outer wall 4, the inner side wall of the expansion air injection nozzle 7 is tightly welded with the central oil path outer wall 3, a support frame 8 is arranged at the opening position of the central oil path 1, a first rotating bearing 9 is arranged at the central position of the support frame 8, a rotating shaft 10 is arranged on the first rotating bearing 9 along the central axis, a plurality of stirring rods, one side that axis of rotation 10 is located puddler 11 is provided with isolated net 13, the fixed exit support 14 that is provided with in end of expansion air injection nozzle 7, the inboard central point of exit support 14 puts and is provided with second rolling bearing 15, and the axis of rotation 10 right-hand member is installed at second rolling bearing 15, driving motor 16 is installed in the outside of exit support 14, and driving motor 16's output is connected with the input transmission of axis of rotation 10, second rolling bearing 15 and driving motor 16's the outside all is provided with sealed cowling 17.
The inside of puddler 11 is provided with air duct 18, evenly is provided with a plurality of air injection nozzle 19 on the lateral wall of puddler 11, installs check valve 20 on the air injection nozzle 19, and the inside of axis of rotation 10 is provided with air pipe 21, and air duct 18 and air pipe 21 swing joint, and are connected with the air pump on the air pipe 21.
The working principle is that when the fuel oil is crushed in the second step, the rotating shaft 10 drives the stirring rod 11 to rotate rapidly so as to crush the fuel oil, the air pump is started, air in the air pump reaches the inner cavity of the rotating shaft 10 along the air delivery pipe 21 and then reaches the inner part of the vent pipeline 18 and is finally sprayed out along the air injection nozzle 19, the sprayed air flow is rapid, the fuel oil is directly impacted, the fuel oil crushing effect is better, and only the air flow is sprayed out from the air injection nozzle 19 and the fuel oil cannot enter the vent pipeline 18 by matching with the arrangement of the check valve 20.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Two oil circuit offset direct injection formula nozzles, including central oil circuit (1) and outer oil circuit (2), its characterized in that:
a central oil way outer wall (3) is arranged on the outer side of the central oil way (1), an outer oil way outer wall (4) is arranged on the outer side of the outer oil way (2), the tail end of the outer oil way (2) is of a closed structure, an inclined injection hole (5) and a rectangular inlet (6) are arranged at the position, close to the tail end of the outer oil way (2), of the central oil way outer wall (3), an expansion nozzle (7) is arranged at the tail end of the outer oil way outer wall (4), the inner side wall of the expansion nozzle (7) is tightly welded with the central oil way outer wall (3), a support frame (8) is arranged at the opening position of the central oil way (1), a first rotating bearing (9) is arranged at the central position of the support frame (8), a rotating shaft (10) is arranged on the first rotating bearing (9) along the central axis, and a plurality of stirring rods (11, and the outside of all puddlers (11) is connected fixedly through solid fixed ring (12), one side that axis of rotation (10) is located puddler (11) is provided with isolated net (13), the fixed exit bracket (14) that is provided with in end of expansion nozzle (7), the inboard central point of exit bracket (14) puts and is provided with second rolling bearing (15), and axis of rotation (10) right-hand member installs at second rolling bearing (15), driving motor (16) are installed in the outside of exit bracket (14), and the output of driving motor (16) is connected with the input transmission of axis of rotation (10), the outside of second rolling bearing (15) and driving motor (16) all is provided with sealed cowling (17).
2. The dual oil path opposed jet direct injection nozzle of claim 1, wherein: the outer wall (3) of the central oil way is of a cylindrical barrel structure.
3. The dual oil path opposed jet direct injection nozzle of claim 1, wherein: eight stirring rods (11) are arranged and distributed in an annular array along the axis of the rotating shaft (10).
4. The dual oil path opposed jet direct injection nozzle of claim 1, wherein: the utility model discloses a stirring shaft, including puddler (11), the inside of puddler (11) is provided with breather pipe (18), evenly be provided with a plurality of air injection nozzle (19) on the lateral wall of puddler (11), install check valve (20) on air injection nozzle (19), the inside of axis of rotation (10) is provided with gas-supply pipe (21), breather pipe (18) and gas-supply pipe (21) swing joint, and be connected with the air pump on gas-supply pipe (21).
5. The dual oil path opposed jet direct injection nozzle of claim 1, wherein: the expansion angle of the expansion nozzle (7) is 8-10 degrees.
6. The dual oil path opposed jet direct injection nozzle of claim 4, wherein: the gas pipe (21) is movably connected with the rotating shaft (10).
7. The dual oil path opposed jet direct injection nozzle of claim 1, wherein: the inner radius of the central oil way (1) is 2-5 mm, the outer oil way (2) is concentric with the central oil way (1), and the distance between the inner wall of the outer oil way (2) and the outer wall of the central oil way (1) is 0.5-1 mm.
8. The dual oil path opposed jet direct injection nozzle of claim 1, wherein: an inclined baffle (22) is arranged on the inner wall of the expansion nozzle (7) towards the outlet support (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483474.1A CN111706878A (en) | 2020-06-01 | 2020-06-01 | Double oil-way opposite-impact direct-injection type nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483474.1A CN111706878A (en) | 2020-06-01 | 2020-06-01 | Double oil-way opposite-impact direct-injection type nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111706878A true CN111706878A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010483474.1A Withdrawn CN111706878A (en) | 2020-06-01 | 2020-06-01 | Double oil-way opposite-impact direct-injection type nozzle |
Country Status (1)
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| CN (1) | CN111706878A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513408A (en) * | 2021-07-07 | 2021-10-19 | 南京航空航天大学 | Combined oil supply device, combustion chamber and oil supply method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348500A4 (en) * | 1987-12-28 | 1990-04-10 | Sundstrand Corp | Annular combustor with tangential cooling air injection. |
| CN1464958A (en) * | 2001-07-10 | 2003-12-31 | 三菱重工业株式会社 | Premixing nozzle, burner and gas turbine |
| CN103988023A (en) * | 2012-01-05 | 2014-08-13 | 三菱日立电力系统株式会社 | Burner |
| CN204227463U (en) * | 2014-09-03 | 2015-03-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Gas-turbine combustion chamber axial admission nozzle |
| CN208579351U (en) * | 2018-06-29 | 2019-03-05 | 德阳钰鑫机械制造有限公司 | A kind of aerospace fuel spray device |
| US20190101291A1 (en) * | 2013-03-04 | 2019-04-04 | Delavan, Inc. | Air swirlers |
| CN109751621A (en) * | 2019-01-02 | 2019-05-14 | 西北工业大学 | A kind of simple nozzle that induction is broken |
| CN109915855A (en) * | 2019-03-01 | 2019-06-21 | 西北工业大学 | Double oil circuits liquidate simple nozzle |
| CN109915856A (en) * | 2019-03-01 | 2019-06-21 | 西北工业大学 | A kind of after-burner rectification supporting plate structure |
| 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 |
-
2020
- 2020-06-01 CN CN202010483474.1A patent/CN111706878A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348500A4 (en) * | 1987-12-28 | 1990-04-10 | Sundstrand Corp | Annular combustor with tangential cooling air injection. |
| CN1464958A (en) * | 2001-07-10 | 2003-12-31 | 三菱重工业株式会社 | Premixing nozzle, burner and gas turbine |
| CN103988023A (en) * | 2012-01-05 | 2014-08-13 | 三菱日立电力系统株式会社 | Burner |
| US20190101291A1 (en) * | 2013-03-04 | 2019-04-04 | Delavan, Inc. | Air swirlers |
| CN204227463U (en) * | 2014-09-03 | 2015-03-25 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Gas-turbine combustion chamber axial admission nozzle |
| CN208579351U (en) * | 2018-06-29 | 2019-03-05 | 德阳钰鑫机械制造有限公司 | A kind of aerospace fuel spray device |
| CN109751621A (en) * | 2019-01-02 | 2019-05-14 | 西北工业大学 | A kind of simple nozzle that induction is broken |
| CN109915855A (en) * | 2019-03-01 | 2019-06-21 | 西北工业大学 | Double oil circuits liquidate simple nozzle |
| CN109915856A (en) * | 2019-03-01 | 2019-06-21 | 西北工业大学 | A kind of after-burner rectification supporting plate structure |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513408A (en) * | 2021-07-07 | 2021-10-19 | 南京航空航天大学 | Combined oil supply device, combustion chamber and oil supply method |
| CN113513408B (en) * | 2021-07-07 | 2022-10-21 | 南京航空航天大学 | Combined oil supply device, combustion chamber and oil supply method |
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Application publication date: 20200925 |
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