Intermediate case of engine

Abstract

The invention provides an intermediate case of an engine. The intermediate case comprises an outer wall, an inner wall and a plurality of supporting plates supported between the outer wall and the inner wall, each supporting plate forms a hollow structure through two bent surfaces of a blade, wherein a cross flow fan is arranged on the tail position inside at least one of the supporting plates, the cross flow fan comprises a driving shaft extending along the height direction of the supporting plate and fan blades circumferentially distributed along the length of the driving shaft, and the two surfaces of the blade of the supporting plate with the cross flow fan are provided with an air inlet in the position of the cross flow fan and an air outlet in the tail end of a tail part.

Description

technical field [0001] The invention relates to engine technology, in particular to an engine intermediate casing. Background technique [0002] The intermediate casing of the aero-engine is used to undertake the airflow transition between the upstream and downstream high and low pressure components, and in order to meet the load-bearing requirements of the structural equipment and strength, there are generally multiple support plates in the intermediate casing. There are drive shafts and pipelines passing through the intermediary casing. Figure 1A and Figure 1B An intermediary casing between the low-pressure compressor and the high-pressure compressor, and an intermediary casing between the high-pressure turbine and the low-pressure turbine are shown, respectively. Figure 1C The structure of a typical intermediate casing is shown. Such as Figure 1C It can be seen that a typical intermediary casing 100 includes an outer wall 110 and an inner wall 130, and the outer wa...

AI Technical Summary

Problems solved by technology

[0005] In the design of some aircraft wings, in order to deal with the flow problem at the tail of the airfoil, some special structures and methods have been introduced, such as active or passive flow control technologies such as adjustable trailing edge and trailing edge blowing and suction, but these technologies are often While increasing the structural complexity of the airfoil itself, it is also necessary to introduce more complex peripheral equipment and additional technologies such as a flow monitoring system, a control system for adjusting or blowing air, and an air source system.

When applied to the internal flow control of the intermediate casing, the number of support plates is large and the space is limited, the complexity of these peripheral auxiliary equipment and technologies will increase, and the design difficulty and cost will increase when used as an engineering application. Reliability issues protrude

Images