Multistage rotation dust washout testing device for aviation engine blade

Abstract

The invention discloses a multistage rotation dust washout testing device for an aviation engine blade. The device comprises a high-pressure gas source, a dust supplying and gas mixing device, a testing system, a control platform, a motor and a test piece installing device for installing to-be-tested test pieces, wherein the output shaft of the motor is connected with the test piece installing device; the high-pressure gas source comprises an air compressor, a high-pressure gasholder tank, a gas pressure meter and an air dryer; the dust supplying and gas mixing device comprises a liquid storage tank, a dust adjusting valve, a sand supply device, a liquid flow adjusting valve, a hopper-shaped mixing bin, a gas and sand mixer and a Laval tube; the testing system and the control platform comprise a gas supply system controller, a sediment amount controller, a humidity controller and a rotary testing system controller. The washing impact of the dust with different flow and humidity to the aviation engine blade can be precisely simulated and the erosion damage to the aviation engine blade can be simulated at a high rotating speed.

Description

technical field [0001] The invention belongs to the technical field of erosion damage performance testing of aeroengine fan / compressor blades, and relates to a multi-station rotary erosion test device for sand dust of aeroengine blades. Background technique [0002] Aeroengines are rotary power machines that add chemical energy to the inhaled airflow to push the turbine to expand and do work. The working environment of aero-engines is very harsh. For compressor blades, it is necessary to work stably in a wide area, especially during take-off and landing, it is inevitable to inhale sand and dust of different sizes and shapes. Driven by the impact of high-speed impact on compressor blades and other components, destroying their surface integrity. During the working process of an aero-engine (especially a turboshaft engine), the compressor and other components are eroded by sand and dust, which easily impacts, erodes and wears the blades, which increases the surface roughness o...

AI Technical Summary

Problems solved by technology

However, this invention cannot adjust and accurately control the dust flow rate and the humidity of the dust environment, and cannot simulate the erosion damage of the aeroengine blades under high-speed rotation.

At present, there is no experimental platform and assessment device dedicated to multi-scale sand and dust rotary erosion of aero-engine fan / compressor blades in my country.

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