Multi-cavity integrated guide vane casing structure with anti-icing function

Abstract

The invention discloses a multi-cavity integrated guide vane casing structure with an anti-icing function. The multi-cavity integrated guide vane casing structure comprises a casing body, the casing body is provided with an air inlet cavity, a first air entraining cavity, a mixing cavity, a second air entraining cavity and a guide vane mounting table; the first air entraining cavity is in communication with the air inlet cavity; the first end of the mixing cavity is in communication with the first air entraining cavity; the second air entraining cavity is in communication with the second end of the mixing cavity; and an air entraining hole is formed in the side, close to the second air entraining cavity, of the guide vane mounting table, and the guide vane mounting table communicates with the second air entraining cavity through the air entraining hole. According to the multi-cavity integrated guide vane casing structure with the anti-icing function, the layout in the anti-icing air-entraining cavity is optimized, a multi-cavity backflow type air-entraining path is formed in the casing, the diffusion of the circumferential space is enhanced, the mixing effect is improved, and the uniformity of an anti-icing air-entraining outlet can be effectively improved. According to the structure, the number of subsequent machining procedures is small, the casting blank cost is low, and the use economical efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, in particular to a multi-chamber integrated guide vane case structure with anti-icing function. Background technique [0002] Generally, the guide vane of the inlet stage of the turboshaft engine compressor needs to adjust the angle, and some gas turbine engine inlet components are stationary parts and are provided with adjustable guide vanes for intake. Under certain operating conditions, the adjustable vanes are at an angle to the engine inlet airflow such that if the aircraft encounters icing conditions, ice will form on the surfaces of the adjustable vanes. Ice accumulation can affect engine performance, and ice that breaks off can cause damage to downstream components. If effective anti-icing and de-icing measures are not taken, the flight safety of the aircraft will be seriously threatened. [0003] With the advancement of aero-engine technology, the requirements for the engine are g...

AI Technical Summary

Problems solved by technology

[0006] 1. There are many components, and the assembly is more complicated. At the same time, in order to ensure the sealing performance, the processing requirements for some matching surfaces are relatively high, and the process difficulty is increased.

[0007] 2. The airtightness of the air-entraining cavity mainly depends on the sealing parts (such as O-ring or metal sealing ring). The O-ring is a vulnerable part, and the sealing is easy to fail, while the compression required by the metal sealing ring is relatively large. It is easy to cause deformation of the end face of the casing flange

[0008] 3. The high-temperature and high-pressure airflow of the single-chamber design directly enters the air-induction cavity and the air-induction hole of the guide vane from the air intake hole on the cover plate. Engine anti-icing effect

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