Device used for cooling fuel nozzles and aero-engine comprising device
A technology for fuel nozzles and cooling air, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve the problems of thermal protection technology that cannot meet design requirements, high cost, complex structure, etc., and achieve good nozzle thermal protection effect and low cost. , the effect of small design difficulty
Active Publication Date: 2020-09-04
AECC COMML AIRCRAFT ENGINE CO LTD
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0011] The technical problem to be solved by the present invention is to provide a device for cooling fuel nozzles and an aero-engine including the same in order to overcome the disadvantages of the nozzle thermal protection technology for preventing coking that cannot meet the design requirements, complex structure and high cost in the prior art.
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
[0074] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0075] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same numbers will be used throughout the drawings to refer to the same or like parts.
[0076] In addition, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the description of the present invention may be selected by the applicant according to his or her judgment, and the detailed meanings thereof are set forth herein described in the relevant section of the description. ...
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 a device used for cooling fuel nozzles and an aero-engine comprising the device. The device comprises multiple air introduction units and multiple spray nozzles. The air introduction units are distributed in the circumferential direction of an outer culvert and used for introducing outer culvert air into a combustion chamber. The spray nozzles are installed in the combustionchamber. A spray nozzle cooling air inlet pipeline, a cooling air exhaust pipeline and a main combustion grade fuel pipeline are arranged in each spray nozzle. One end of each spray nozzle cooling air inlet pipeline is connected with the corresponding air introduction unit, and the other end of each spray nozzle cooling air inlet pipeline communicates with a main combustion grade oil collection ring on the main combustion grade fuel pipeline. One end of each cooling air exhaust pipeline communicates with the main combustion grade oil collection ring, and the other end of each cooling air exhaust pipeline communicates with the outer portion of the combustion chamber. Due to the fact that the spray nozzle thermal protection structure is simple, the spray nozzle manufacture cost is low and the cooling medium temperature is low, a better spray nozzle thermal protection effect can be achieved, coking can be avoided, the spray nozzle service life or the maintenance time interval is prolonged, and the use cost is reduced.
Description
technical field [0001] The invention relates to the field of civil aeroengines, in particular to a device for cooling fuel nozzles and an aeroengine comprising the same. Background technique [0002] In the field of aero-engines, with the increasingly stringent environmental protection requirements, the pollution emission restrictions of civil aero-engines are becoming more and more stringent. Contemporary civil aero-engines widely adopt low-emission combustion technology to meet low-emission requirements. [0003] Among low-emission combustion technologies, lean-oil low-emission combustion technology has the greatest potential in reducing emissions, and is a very promising low-emission technology. Lean fuel and low emission technology usually requires the use of graded fuel nozzles. The nozzles are divided into pre-combustion stage and main combustion stage. Under small conditions, only the pre-combustion stage supplies fuel, and under heavy conditions, the pre-combustion s...
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 Applications(China)
IPC IPC(8): F23R3/28
CPCF23R3/28
Inventor 何沛徐康陈毓卿
Owner AECC COMML AIRCRAFT ENGINE CO LTD