A sector test device for a variable cycle afterburner

Abstract

The application discloses a variable cycle afterburner sector test device, which comprises a spray / stabilization integrated section capable of realizing different boundary combustion after ignition at different positions. The spray / stabilization integrated section is arranged in combination with an inner cone point ignition electrode, a radial point ignition electrode, a ring point ignition electrode, a first oil spray rod, a second oil spray rod, a third oil spray rod, a long spray / stabilization integrated component and a short spray / stabilization integrated component, so that different boundary combustion can be realized after ignition at different positions in the spray / stabilization integrated section, and the problem that different combustion boundaries after ignition at different positions cannot be tested is solved.

Description

Technical Field

[0001] This invention relates to a sector-shaped test device for a variable-cycle afterburner, belonging to the field of aero-engine technology. Background Technology

[0002] The afterburner is a component that forcibly mixes internal combustion gases and external bypass air before injecting fuel, igniting, and burning them to increase the airflow temperature and thus increase engine thrust in a short period of time. It is mainly used in military aero engines to meet the need for a significant increase in thrust in a short time. To verify the combustion performance of the afterburner in a variable cycle engine, it is necessary to design a sector-shaped test device for the variable cycle afterburner to observe the ignition and combustion boundary conditions.

[0003] A combustion testing device capable of observing combustion conditions is disclosed in Chinese Patent Publication No. CN215726809U. The disclosed technology is as follows: the fuel nozzle, ignition nozzle, and combustion chamber test section together form a combustion chamber test piece structure with the same structure as a real combustion chamber. The combustion chamber test section is also provided with multiple window components, each of which allows visibility into the interior of the combustion chamber test section. Although the ignition and combustion conditions of the fuel nozzle and ignition nozzle inside the combustion chamber test section can be observed through the window components, it cannot solve the problem of testing different combustion boundaries generated by ignition at different positions. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a variable cycle afterburner sector test device.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a sector-shaped test device for a variable-cycle afterburner, comprising:

[0007] The internal space allows for the creation of an integrated spray / stabilization section with different boundaries after ignition at different locations.

[0008] The integrated injection / stabilization section is equipped with a radial ignition mounting base, an inner cone ignition mounting base, and a circumferential ignition mounting base. The radial ignition mounting base is equipped with a radial ignition nozzle, the inner cone ignition mounting base is equipped with an inner cone ignition nozzle, and the circumferential ignition mounting base is equipped with a circumferential ignition nozzle. The inner cone ignition nozzle, radial ignition nozzle, and circumferential ignition nozzle are distributed at different ignition points within the integrated injection / stabilization section and can perform ignition.

[0009] The integrated injection / stabilization section is equipped with a main pipe mounting base, on which are mounted main pipes II, III, and I. The integrated injection / stabilization section contains fuel-spraying injectors I, II, and III. Injectors I, II, and III are connected to the main pipe I, II, and III. The integrated injection / stabilization section also contains fuel-spraying long and short integrated injection / stabilization components. These components are spaced apart and positioned at different locations within the integrated injection / stabilization section.

[0010] The spray / stabilize integrated section has an adjustable mixer section connected to one end and a booster cylinder section I connected to the other end, which in turn is connected to a booster cylinder section II.

[0011] The integrated spray / stabilize section, adjustable mixer section, booster cylinder section I, and booster cylinder section II are all equipped with cooling water inlet flanges and cooling water outlet flanges in relative positions.

[0012] An oil baffle is installed at the port of the integrated injection / stabilization section near the adjustable mixer section.

[0013] The inner wall of the spray / stabilize integrated section is equipped with a heat insulation screen section I, and the heat insulation screen section I and the inner wall of the spray / stabilize integrated section are spaced apart to form an inner flow channel cooling channel.

[0014] An outlet measuring point mounting base is installed on the booster cylinder section II, which is close to the injection / stabilization integrated section, to observe the different combustion boundary conditions at different ignition positions at the outlet end of the injection / stabilization integrated section; an observation window is provided on the adjustable mixer section to observe the different combustion boundary conditions at different ignition positions at the inlet end of the injection / stabilization integrated section.

[0015] A heat insulation screen section III is installed on the inner wall of the booster cylinder section II, and the heat insulation screen section III and the inner wall of the booster cylinder section II are spaced apart to form an internal flow channel cooling channel.

[0016] A heat insulation screen section II is installed on the inner wall of the booster cylinder section I, and the heat insulation screen section II and the inner wall of the booster cylinder section I are spaced apart to form an internal flow channel cooling channel.

[0017] The beneficial effects of this invention are as follows: the inner cone ignition nozzle, radial ignition nozzle, and circumferential ignition nozzle, which can ignite at different ignition points, and the I-way spray bar, II-way spray bar, III-way spray bar, long spray / stabilization integrated component, and short spray / stabilization integrated component, which can inject oil and burn at different positions, are arranged and combined to achieve different combustion boundaries after ignition at different positions within the spray / stabilization integrated section, thus solving the problem of not being able to test the different combustion boundaries produced by ignition at different positions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 Therefore Figure 1 A schematic diagram of the right-view structure based on this;

[0020] Figure 3 yes Figure 2 A schematic diagram of the front view section along line AA.

[0021] Figure 4 This is a schematic diagram of the adjustable mixer section of the present invention;

[0022] Figure 5 This is a schematic diagram of the integrated spray / stabilize section of the present invention;

[0023] Figure 6 This is a structural schematic diagram of section I of the force-adding cylinder of the present invention;

[0024] Figure 7 This is a structural schematic diagram of the second section of the force-adding cylinder of the present invention;

[0025] Figure 8 This is a front view schematic diagram of the spray / stabilize integrated section of the present invention;

[0026] Figure 9 Therefore Figure 8 A diagram of the right view based on this.

[0027] Figure 10 yes Figure 9 A cross-sectional view along line BB;

[0028] Figure 11 This is a schematic diagram illustrating the connection and use of the mounting base, screws, and washers in this invention;

[0029] Figure 12 This is a schematic front cross-sectional view of section I of the power-adding cylinder of the present invention;

[0030] Figure 13 This is a schematic front cross-sectional view of section II of the booster cylinder of the present invention;

[0031] In the diagram: 1-Adjustable mixer section; 2-Integrated spray / stabilizer section; 3-Afterburner cylinder section II; 4-Spring washer; 5-Nut; 6-Bolt; 7-Radial ignition mount; 8-Inner cone ignition mount; 9-Cooling water inlet flange; 10-Cooling water outlet flange; 11-Main pipe mount; 12-II main pipe; 13-III main pipe; 14-I main pipe; 15-Circular ignition mount; 16-Inner cone ignition mount; 17-Conical ignition nozzle; 18-Long spray / stabilization integrated component; 19-Oil baffle; 20-Heat insulation section I; 21-Mounting base; 22-Screw; 24-Washer; 25-I-path spray bar; 26-II-path spray bar; 27-III-path spray bar; 28-Observation window; 29-Power booster cylinder section I; 30-Heat insulation section II; 31-Outlet measuring point mounting base; 32-Heat insulation section III. Detailed Implementation

[0032] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0033] like Figures 1 to 13 As shown.

[0034] This application discloses a sector-shaped test device for a variable-cycle afterburner, comprising:

[0035] The spray / stabilize integrated section 2 is connected to the adjustable mixer section 1 at one end via spring washer 4, nut 5, and bolt 6. The other end of the spray / stabilize integrated section 2 is connected to the booster cylinder section I 29 via spring washer 4, nut 5, and bolt 6. The booster cylinder section I 29 is connected to the booster cylinder section II 3 via spring washer 4, nut 5, and bolt 6.

[0036] The spray / stabilize integrated section 2, the adjustable mixer section 1, the booster cylinder section I 29, and the booster cylinder section II 3 are all equipped with cooling water inlet flange 9 and cooling water outlet flange 10 in relative positions. Cooling water enters from the cooling water inlet flange 9, is heated and atomized, and then exits from the cooling water outlet flange 10.

[0037] The integrated spray / stabilization section 2 is equipped with a radial ignition mounting base 7, an inner cone ignition mounting base 8, and a circumferential ignition mounting base 15. The radial ignition mounting base 7 is equipped with a radial ignition nozzle, the inner cone ignition mounting base 8 is equipped with an inner cone ignition nozzle 16, and the circumferential ignition mounting base 15 is equipped with a circumferential ignition nozzle. The inner cone ignition nozzle 16, the radial ignition nozzle, and the circumferential ignition nozzle are distributed at different ignition points within the integrated spray / stabilization section 2 and can perform ignition.

[0038] The integrated injection / stabilization section 2 is equipped with a main pipe mounting base 11, on which are mounted a second-path main pipe 12, a third-path main pipe 13, and a first-path main pipe 14. The integrated injection / stabilization section 2 contains three fuel-spraying components: a first-path spray bar 25, a second-path spray bar 26, and a third-path spray bar 27. The first-path spray bar 25 is connected to the first-path main pipe 14, the second-path spray bar 26 is connected to the second-path main pipe 12, and the third-path spray bar 27 is connected to the third-path main pipe 13. The integrated injection / stabilization section 2 also contains a long-injection / stabilization integrated component 17 and a short-injection / stabilization integrated component 18, which are spaced apart and positioned at different locations within the integrated injection / stabilization section 2.

[0039] The inner cone ignition nozzle 16, radial ignition nozzle, and circumferential ignition nozzle, which can ignite at different ignition points, and the I-way spray bar 25, II-way spray bar 26, III-way spray bar 27, long spray / stabilization integrated component 17, and short spray / stabilization integrated component 18, which can inject oil and burn at different positions, are arranged and combined to achieve different combustion boundaries after ignition at different positions within the spray / stabilization integrated section 2, thus solving the problem of not being able to test different combustion boundaries produced by ignition at different positions.

[0040] A fuel baffle 19 is installed at the port of the injection / stabilization integrated section 2 near the adjustable mixer section 1. The fuel baffle 19 prevents the fuel from spreading into the adjustable mixer section 1 when it is injected, so that the flame after ignition and combustion only blows towards the booster cylinder section I 29 and booster cylinder section II 3.

[0041] The inner wall of the integrated injection / stabilization section 2 is fixedly installed with a heat insulation screen section I 20 by mounting base 21, screw 22, and washer 24. The heat insulation screen section I 20 and the inner wall of the integrated injection / stabilization section 2 are spaced to form an inner flow channel cooling channel, which is filled by low temperature air from the outer casing to absorb and carry away the heat radiation from fuel combustion, thereby reducing the heat radiation of the inner shell of the integrated injection / stabilization section 2 and lowering its wall temperature.

[0042] An outlet measuring point mounting seat 31 is detachably and fixedly installed on the booster cylinder section II 3 that is close to the injection / stabilization integrated section 2. The outlet measuring point mounting seat 31 allows observation of different combustion boundaries at different ignition positions from the outlet end of the injection / stabilization integrated section 2.

[0043] A heat insulation screen section III 32 is fixedly installed on the inner wall of the booster cylinder section II 3 by mounting base 21, screw 22, and washer 24. The heat insulation screen section III 32 and the inner wall of the booster cylinder section II 3 are spaced apart to form an internal flow channel cooling channel, which is filled by low temperature air from the outer casing to absorb and carry away the heat radiation from fuel combustion, thereby reducing the heat radiation from the inner shell of the booster cylinder section II 3 and lowering its wall temperature.

[0044] A heat insulation screen section II 30 is fixedly installed on the inner wall of the afterburner section I 29 by mounting base 21, screw 22, and washer 24. The heat insulation screen section II 30 and the inner wall of the afterburner section I 29 are spaced apart to form an internal flow channel cooling channel, which is filled by low temperature air from the outer casing to absorb and carry away the heat radiation from fuel combustion, thereby reducing the heat radiation from the inner shell of the afterburner section I 29 and lowering its wall temperature.

[0045] The adjustable mixer section 1 is provided with an observation window 28, through which the combustion boundary at different ignition positions can be observed from the inlet end of the injection / stabilization integrated section 2.

Claims

1. A sector test apparatus for a variable cycle afterburner, characterized by, The internal space can realize different boundary combustion after ignition at different positions. The radial ignition mounting seat (7) is installed with a radial point ignition electrode, the inner cone ignition mounting seat (8) is installed with an inner cone point ignition electrode (16), and the annular point ignition mounting seat (15) is installed with an annular point ignition electrode. The radial point ignition electrode, the inner cone point ignition electrode (16) and the annular point ignition electrode are distributed at different ignition positions in the spray / stabilization integrated section (2) and can be ignited.

2. The variable cycle augmentor sector test device of claim 1 wherein: The spray / stabilization integrated section (2) is installed with a manifold mounting seat (11), the manifold mounting seat (11) is installed with a second manifold (12), a third manifold (13) and a first manifold (14), the spray / stabilization integrated section (2) is installed with a first spray rod (25), a second spray rod (26) and a third spray rod (27) capable of spraying fuel, the first spray rod (25) is communicated with the first manifold (14), the second spray rod (26) is communicated with the second manifold (12), and the third spray rod (27) is communicated with the third manifold (13).

3. The variable cycle augmentor sector test device of claim 2 wherein: The spray / stabilization integrated section (2) is installed with a long spray / stabilization integrated component (17) and a short spray / stabilization integrated component (18) capable of spraying fuel, and the first spray rod (25), the second spray rod (26), the third spray rod (27), the long spray / stabilization integrated component (17) and the short spray / stabilization integrated component (18) are distributed at different positions in the spray / stabilization integrated section (2).

4. The variable cycle augmentor sector test device of claim 2 wherein: The spray / stabilization integrated section (2) is communicated with an adjustable mixer section (1) at one end, and communicated with a booster barrel I section (29) at the other end.

5. The variable cycle augmentor sector test device of claim 2 wherein: The spray / stabilization integrated section (2), the adjustable mixer section (1), the booster barrel I section (29) and the booster barrel II section (3) are all provided with cooling water inlet flanges (9) and cooling water outlet flanges (10) in opposite positions.

6. The variable cycle augmentor sector test device of claim 2 wherein: An oil baffle (19) is installed at the port of the spray / stabilization integrated section (2) close to the adjustable mixer section (1).

7. The variable cycle augmentor sector test device of claim 2 wherein: A heat shield I section (20) is installed on the inner wall of the spray / stabilization integrated section (2), and the heat shield I section (20) and the inner wall of the spray / stabilization integrated section (2) form an inner flow channel cooling passage with a spacing.

8. The variable cycle augmentor sector test device of claim 2 wherein: An outlet measuring point mounting seat (31) is installed on the booster barrel II section (3) close to the spray / stabilization integrated section (2) to observe different combustion boundary conditions at different ignition positions of the outlet end of the spray / stabilization integrated section (2). An observation window (28) is arranged on the adjustable mixer section (1) to observe different combustion boundary conditions at different ignition positions of the inlet end of the spray / stabilization integrated section (2). A heat shield III section (32) is installed on the inner wall of the booster barrel II section (3), and the heat shield III section (32) and the inner wall of the booster barrel II section (3) form an inner flow channel cooling passage with a spacing.

9. The variable cycle augmentor sector test device of claim 2 wherein: The inner wall of the booster barrel I section (29) is provided with a heat shield II section (30), and the heat shield II section (30) is spaced from the inner wall of the booster barrel I section (29) to form an inner flow channel cooling passage.

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