Low-emission backflow combustion chamber adopting circumferential and tangential oil supply mode
A recirculation combustion chamber, low-emission technology, applied in the field of aero-engines, can solve the problems of low pressure loss, large nozzle spacing ratio, difficult low-polluting combustion solutions, etc., to ensure transition state characteristics, small radial size, and low pollution. Potential inhibiting effect
Active Publication Date: 2022-01-04
ZHEJIANG UNIV
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Problems solved by technology
For the return combustion chamber of small and medium-sized turboshaft / turboprop engines, it is difficult to directly implement the turbofan engine center due to the characteristics of the return combustion chamber flame cylinder cavity height (typically 50mm), large nozzle spacing ratio, and low pressure loss. Graded low-polluting combustion scheme
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[0023] Below in conjunction with accompanying drawing and embodiment, technical scheme of the present invention is described further:
[0024] Such as Figure 1-2 Shown is a low-emission recirculation combustor with circumferential tangential oil supply, including: flame tube elbow 1, radial diffuser 2, combustion chamber casing 3, flame tube head 4, swirl installation Seat 5, oblique premixing vortex 6 and fuel nozzle 7, the radial diffuser 2 is installed inside the combustion chamber casing 3 from the tail end forward, and the flame tube elbow 1 is placed in the Inside the radial diffuser 2, the head end of the flame tube elbow 1 is provided with the flame tube head 4, the flame tube head 4 is provided with the vortexer mounting seat 5, and the chamfered pre-cut The vortex mixer 6 is installed in the vortex mixer mounting seat 5 , and the fuel nozzle 7 communicates with the flame cylinder elbow 1 through the obliquely cut premix vortex 6 .
[0025] Such as image 3 As sho...
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The invention discloses a low-emission backflow combustion chamber adopting a circumferential and tangential oil supply mode, and relates to the technical field of aero-engines. The low-emission backflow combustion chamber comprises a flame tube elbow, a radial diffuser, a combustion chamber casing, a flame tube head, a swirler mounting seat, a beveled premixing swirler and a fuel nozzle. The radial diffuser is mounted in the combustion chamber casing from the tail end to the front end, the flame tube elbow is arranged in the radial diffuser, the flame tube head is arranged at the head end of the flame tube elbow, the swirler mounting seat is arranged on the flame tube head, the beveled premixing swirler is mounted in the swirler mounting seat, and the fuel nozzle communicates with the flame tube elbow through the beveled premixing swirler. The characteristics that the axial length of the backflow combustion chamber is large and the cavity height of a flame tube is small are fully utilized for fuel oil grading, the ignition and flameout characteristics and the transition state characteristics are guaranteed in the limited backflow combustion chamber space, and low emission of pollutants is achieved.
Description
technical field [0001] The invention relates to the technical field of aero-engines, in particular to a low-emission recirculation combustion chamber adopting a circumferential tangential fuel supply mode. Background technique [0002] The combustion chamber is one of the core components of aero-engines and ground gas turbines. It is the "heart" of aero-engines and the place where engine pollution emissions are generated. The chemical reaction between aviation kerosene and air in the combustion chamber converts the chemical energy of kerosene into kinetic energy, and a large amount of high-temperature gas expands at the outlet of the combustion chamber to drive the turbine to do work. With the development of the aviation industry in recent years and the environmental pollution at home and abroad Governance and control are becoming more and more stringent, and the pollution emission problem of aero-engines has also been paid attention to by the industry. How to reduce engine ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F23R3/32F23R3/38F23R3/42
CPCF23R3/32F23R3/38F23R3/425
Inventor 曾琦朱志新王高峰郑耀
Owner ZHEJIANG UNIV