Diffuser structure with adjustable deflation scheme and application

Abstract

The invention discloses a diffuser structure with an adjustable deflation scheme and application, and belongs to the field of combustion chambers of gas turbines. The diffuser is mainly composed of a diffuser rotatable inner plate, a diffuser outer plate, a casing, a flame tube, an inner ring cavity and an outer ring cavity. The diffuser is composed of two layers of plates, an inner plate is rotatable, an inlet section is connected with a motor through a gear, the motor drives the gear to rotate, the gear is in meshing transmission with a wheel ruler at an inlet of the inner plate, and an outlet section is connected through a bearing, so that rotation of the inner plate of the diffuser is achieved through the mode, and the inner plate and the outer plate are different in trepanning mode. Therefore, the purpose that the air inlet scheme is adjustable can be achieved by rotating the inner plate. According to the diffuser with the adjustable deflation scheme, the hole layout and the hole area can have variability, meanwhile, the air inlet parameters of the diffuser under different working conditions can be adjusted through the diffuser with the adjustable deflation scheme, the diffuser has the better effect under the different working conditions, and therefore the stable working range is widened, and the service life of the diffuser is prolonged. The pneumatic requirement of an advanced combustion chamber is further met.

Description

technical field [0001] The invention belongs to the field of gas turbine combustion chambers, in particular to the structure and application of a diffuser with an adjustable air release scheme. Background technique [0002] The three core components of an aero-engine are the compressor, the combustion chamber and the turbine. The fuel supplied in the combustion chamber is mixed with the high-pressure air from the compressor to form a combustible mixture and then fully and effectively combust. The function of the combustion chamber is to release the chemical energy in the fuel through combustion and convert it into heat energy, thereby increasing the total enthalpy of the gas and improving the expansion performance of the gas in the turbine and the tail nozzle. [0003] With the continuous development of the aviation industry, civil aircraft need to meet more and more strict pollution control conditions, so the combustion chamber needs to organize combustion in a lean state, ...

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Problems solved by technology

[0004] In the process of studying the diffuser, if the geometric parameters cannot be adjusted, the number of test pieces required in the experimental research on the sensitivity of the geometric parameters is huge, and it needs to be disassembled and installed continuously, and the selection of the optimal parameters is intermittent and cannot be achieved. The effect of continuously varying parameters

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