A visual full-ring model combustion chamber with removable head structure

Abstract

A visual full-ring model combustion chamber with a removable head structure. The invention relates to the field of aero-engine combustor structures. A visual full-ring model combustor with a short development period and low cost is proposed with a removable head structure. It includes an air intake casing, an oil inlet assembly, an annular head, a flame tube and an ignition assembly; the bottom of the air intake casing is provided with an air inlet, and the top is detachably connected to the annular head; the flame tube It includes an inner flame cylinder and an outer flame cylinder made of transparent material; a swirler is detachable in the installation hole; a nozzle is arranged in the swirler; the oil inlet assembly is arranged in the air intake casing , and is used to supply oil to several nozzles; the ignition assembly is fixedly connected to the flame cylinder, and the ignition assembly includes an ignition nozzle that passes through the outer flame cylinder. Through the ingenious design of the ring head, to replace different numbers of cyclones, only the corresponding ring head needs to be removed and installed. On the other hand, it is convenient to observe the whole field of view.

Description

technical field [0001] The invention relates to the field of aero-engine combustion chamber structures, in particular to a visual full-ring combustion chamber with a removable head structure. Background technique [0002] Internationally, NASA divides the research and development of combustor technology into multiple stages, including the proposal of the combustor design concept, the research and development of single-head combustors, the design of multi-head combustors, the full-ring and complete machine testing links, etc. Level 9, the test conditions, cycle, and funding required from low level to high level will increase by leaps and bounds. The single-head test piece has the characteristics of short cycle time, low test cost, convenient optical measurement, and easy determination of test parameters. It is often used as the object of preliminary test research and replacement research. The flame propagation characteristics under the flame interference state of one head, t...

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Problems solved by technology

Patent "diesel engine combustion chamber with visual window", patent number CN107023378B, its structure is: quartz cylinder liner and metal cylinder liner, the extended piston is placed in the quartz cylinder liner and metal cylinder liner, which solves the convection field of the traditional simplified combustion chamber Distortion and difficulty in obtaining the vertical flow field in the combustion chamber

Although these patents have achieved a lot of results, there are still some problems, such as the structure can be replaced, but the flow in the combustion chamber cannot be observed, or the flow field of the combustion chamber can be obtained, but the size of the combustion chamber cannot be adjusted

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