An Integrated Afterburner Using Two-Stage Swirler
A technology of afterburner and swirler, which is applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc. It can solve the problems of poor fuel atomization effect, limited flame stabilization ability of the head structure, and small recirculation area.
Active Publication Date: 2020-12-08
NORTHWESTERN POLYTECHNICAL UNIV
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, today's afterburner still has problems such as small recirculation area, poor fuel atomization effect, and very limited flame stabilization ability of the head structure. Combustion stability and combustion efficiency need to be improved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The present invention will be further described now in conjunction with accompanying drawing:
[0020] to combine figure 1 , figure 2 , image 3 and Figure 4 , the invention provides an integrated afterburner using a double-stage swirler. figure 1 It is an overall schematic diagram of an integrated afterburner using a two-stage swirler, figure 2 is a cross-sectional view of an integrated afterburner using a two-stage swirler, image 3 An internal structure diagram of an integrated afterburner using a two-stage swirler, Figure 4 It is the structural diagram of the first-stage axial swirler blade.
[0021] The airflow from the inner and outer ducts passes through the first-stage axial swirler blades (2) and the second-stage radial swirler blades (4), and the fuel enters the fuel passage (9) through the fuel supply pipe, and is injected by the side fuel injection Hole (10) and tail fuel injection hole (11) are ejected, and the fuel ejected from side fuel injecti...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an integrated afterburner capable of applying a two-stage swirler. A turbine rear flow stabilizing supporting plate and a flame stabilizer are replaced with the two-stage swirler, a venturi tube structure is designed at an outlet of the swirler, the two stages of the swirler are in axial design and radial design, and a low-speed back flow area which is stable, large in sizerange and high in vortex flow more easily forms on the downstream. Fuel oil channels are formed in first-stage axial swirler blades, fuel oil spraying holes are formed in the side surfaces and the tails of the blades, and a supporting plate structure is disposed at spraying openings. Fuel oil absorbs heat in the fuel oil channels to be pre-heated, and then the fuel oil is sprayed out of the fuel oil spraying holes in the first-stage axial swirler blades and collides with supporting plates. The integrated afterburner capable of applying the two-stage swirler has the advantages that the two-stage swirler and the venturi tube structure are creatively applied to the afterburner, a unique blade structure which is provided with the supporting plates and can spray oil is additionally arranged, and the fuel oil atomization effect, burning stability and burning efficiency can be effectively improved.
Description
technical field [0001] The invention belongs to the field of gas turbine engines, and in particular relates to an integrated afterburner using a double-stage swirler. Background technique [0002] In order to improve the combat performance of the aircraft and expand the aircraft envelope, the power plant of military fighter jets increases thrust through afterburner, and the use of afterburner is an important technical means to improve the thrust-to-weight ratio of aeroengines. The afterburner is a device that injects oil into the gas after the turbine or the mixture of gas and external content to ignite and burn, so as to increase the temperature of the airflow and increase the thrust of the engine in a short period of time. After the air flows through the turbine to expand and perform work, even though it is decelerated and diffused by the diffuser, compared with the main combustion chamber, the pressure is still low, the flow rate is high, and it is not easy to ignite. Ev...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/38
CPCF23R3/38
Inventor 张群李程镐刘强杨福正曹婷婷海涵张鹏王鑫
Owner NORTHWESTERN POLYTECHNICAL UNIV