A Bench Installation Method for Performance Test of Aeronautical Axial Flow Compressor

Abstract

The invention relates to a rack mounting and connection method for test equipment which can be applied to a performance test of an aviation axial flow air compressor. The rack mounting method comprises the step of acquiring a working clearance between an input shaft (1) of an air compressor sample and an output shaft (3) of test equipment air exhaust passage by adopting a pre-installation method before an air compressor is installed. The rack mounting method designs a corresponding front auxiliary supporting structure and an air inlet sealing connection method based on a specific structure type of the air compressor sample.

Description

technical field [0001] The invention relates to the field of aerodynamic performance test research of components of an aeroengine axial flow compressor, and proposes a bench installation method for the performance test of an aeroengine axial flow compressor. Background technique [0002] The axial flow compressor is the most difficult core key component in modern aero-engines. In the development process of aviation axial flow compressor, the aerodynamic performance test of axial flow compressor components is a very important research content. Through the detailed performance parameter test and analysis of the compressor test piece on the special compressor test equipment, the design results can be verified And provide direction and guidance for compressor optimization and improvement. Whether the compressor performance test can be carried out smoothly, in addition to the good mechanical characteristics of the compressor test piece itself, the technical state of the installa...

AI Technical Summary

Problems solved by technology

Although this installation structure can ensure the free expansion of the casing of the compressor test piece under the action of thermal deformation, due to the lack of support points at the compressor inlet, there are many external factors that affect the installation accuracy of the compressor test piece bench in actual work. For example: casing rigidity of the compressor test piece, span of the bearing fulcrum of the compressor test piece, unbalance of the rotor system of the compressor test piece, fit gap between the exhaust casing of the compressor test piece and the exhaust duct of the test equipment, compressed air Mesh of the inner and outer gears between the input shaft (1) of the machine test piece and the output shaft (3) of the exhaust passage of the test equipment, etc.

In general, the above-mentioned installation methods are relatively random, the key connection parameters have not been effectively controlled, and more rely on the experience of the operator, which may easily lead to vibration problems of the outer casing or bearings of the compressor test piece during operation, seriously affecting The test work of the compressor test piece was carried out smoothly

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