A rotor casing structure inside a rotating disk cavity and an engine including the structure

Abstract

The invention relates to a bent-type rotor cover shell structure inside a centripetal inflow rotor-stator system rotating disk cavity. The bent-type rotor cover shell structure can be applied to the fields such as ground gas turbines and aero-engines. According to the unique characteristics of the bent-type rotor cover shell structure, the bent-type rotor cover shell structure formed through metalplates is applied to the low-radius position inside the rotor-stator system rotating disk cavity, through the light rotor cover shell structure, the rotating ratio of an air flow flowing inwards at the low-radius position is decreased, and thus the purpose that the flowing loss of the air flow in the inward flowing process is reduced is achieved. The bent-type rotor cover shell structure suitablefor the interior of the centripetal rotor-stator system rotating disk cavity has the effects that lightweight is achieved, the structure is simple, the processing cost is low, the rotating ratio of the air flow is reduced, and the air flow pressure in the disk cavity is increased, so that the great prospects of engineering application are achieved.

Description

Technical field [0001] The invention belongs to the technical field of gas turbines and aeroengines, and relates to a rotor casing structure inside a rotating disc cavity, and in particular to a method that can be applied inside a centripetal rotating static system rotating disc cavity to realize the airflow pressure of a secondary air system branch flow path Adjustable curved rotor housing structure. Background technique [0002] In the air system of gas turbines and aeroengines, it is a very common flow structure for gas to flow inward or outward through the rotating disk cavity, and the rotating disk cavity in different positions and with different structures has different functions. For example, the rotating disk cavity at the compressor end is generally used for bleed air. This gas flows into the rotating disk cavity through the root of the compressor rotor to flow inward to the center of the disk, and then through different flow paths to reach different positions of the gas...

AI Technical Summary

Problems solved by technology

As the airflow moves toward the low-radius position, the airflow rotation ratio gradually increases, which will lead to an increase in the pressure loss of the airflow at the low-radius position inside the disk cavity, resulting in a decrease in the bleed air pressure downstream of the branch flow path, which has a negative effect on The influence of the pressure change law of the branch flow path will be very significant

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