Support plate structure and inlet casing frame comprising same

Abstract

The invention relates to a support plate structure. The support plate structure comprises a support plate, wherein the support plate is internally provided with a cavity and is provided with an anti-icing gas inlet communicating with the cavity and a plurality of anti-icing gas outlets communicating with the cavity; the anti-icing gas outlets are located on the rear edge of the support plate and arranged in the axial direction. Through the support plate structure, anti-icing gas can go into the cavity in the support plate from the anti-icing gas inlet to direct heat the front edge of the support plate so that the good anti-icing effect on the support plate can be achieved. Besides, the anti-icing gas outlets are located on the rear edge of the support plate. On the one hand, the rear edgeof the support plate can have the relatively thick cross section and is provided with the anti-icing gas outlets, and the bearing capacity of the support plate cannot be weakened a lot; and on the other hand, the anti-icing gas outlets are formed in the rear edge of the support plate so that anti-icing gas discharged from the cavity of the support plate can impact a blade behind the support plateto form a gas film on the surface of the blade behind the support plate, and accordingly, anti-icing of the blade behind the support plate is facilitated. In addition, the invention further relates toan inlet casing frame comprising the support plate structure.

Description

technical field [0001] The application belongs to the technical field of air intake casing frame design, and in particular relates to a support plate structure and an air intake casing frame with the same. Background technique [0002] Aircraft engine intake casing structure is one of the main load-bearing frames of the engine, which includes the intake casing; the inner ring arranged in the intake casing; There are support plates distributed in the circumferential direction, the outer end of each support plate is connected with the intake case, and the inner end is connected with the inner ring. [0003] At present, in the structure of the engine intake casing, in order to make each support plate have an anti-icing effect, it is usually designed as a cavity structure, and a support rib is designed inside it, and the cavity is divided into a front cavity near the front edge, and a cavity near the rear edge. The back cavity of the back cavity, and the anti-icing gas inlet co...

AI Technical Summary

Problems solved by technology

[0003] At present, in the structure of the engine intake casing, in order to make each support plate have an anti-icing effect, it is usually designed as a cavity structure, and a support rib is designed inside it, and the cavity is divided into a front cavity near the front edge, and a cavity near the rear edge. The back cavity of the back cavity, and the anti-icing gas inlet connected with the rear cavity, and the anti-icing gas outlet connected with the front cavity, the support ribs have anti-icing gas holes connected with the front cavity and the rear cavity, and the anti-icing gas first self-defenses The ice air inlet enters the rear cavity to heat the rear edge of the support plate, and at the same time, the anti-icing air enters the front cavity through the hole to heat the front edge of the support plate, and then flows out from the anti-icing air outlet. When the air enters the rear cavity, it heats the rear edge of the strut, and when it enters the front cavity, the ability to heat the front edge of the strut decreases, and the anti-icing air enters the front cavity from the rear cavity through the anti-icing air hole, and the front edge of the strut is damaged. The impact capacity of the part is weak, which makes the anti-icing effect of the front edge of the support plate unsatisfactory. In addition, the anti-icing air outlet is opened to the surface of the support plate, which greatly weakens the bearing capacity of the support plate

[0004] Furthermore, in the current engine air intake case structure, the outer ends of each support plate are provided with hollow structure support plate heads, which are connected with the intake casing through the support plate heads, wherein the support plate heads are mostly formed by casting. Most of the support plates are processed by superplastic forming diffusion welding process, and triangular areas are easily formed at the front edge of the support plates and the support ribs. In the triangular areas, the welding effect between the support plate and the support plate head is not good, and cracks are prone to occur

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