Intake guide vane adjustment device

Abstract

The invention discloses an air inlet guide vane adjusting device. The air inlet guide vane adjusting device comprises an electric controller, an electro-hydraulic servo valve and a piston assembly which is used for adjusting the angle of an air inlet guide vane, wherein the electric controller is electrically connected with the electro-hydraulic servo valve and supplies electrical input signals to the electro-hydraulic servo valve; the electro-hydraulic servo valve is used for driving the piston assembly to act. The air inlet guide vane adjusting device further comprises a position sensor, wherein the position sensor detects the displacement of the piston assembly, generates feedback signals and feeds back the feedback signals to the electric controller, and the electric controller outputs the electrical input signals according to external input drive signals and the feedback signals. According to the air inlet guide vane adjusting device, angle adjustment is carried out in a manner that the electro-hydraulic servo valve drives the piston assembly to drive the air inlet guide vane, and the position sensor detects the displacement of the piston assembly and feeds back the displacement signals of the piston assembly to the electric controller, so that a closed-loop control system, controlled by the electric controller, of the electro-hydraulic servo valve is formed, the accurate adjustment on the angle of the air inlet guide vane can be realized, and then, the inlet air flow volume of an air inlet passage of an air compressor is controlled accurately, thus the occurrence of surging during the work of the air compressor is avoided.

Description

technical field [0001] The invention relates to the field of aero-engine control, in particular to an air intake guide vane adjustment device for an aero-engine. Background technique [0002] The compressor of the aero-engine is an important part of the turbocharger. The air enters the impeller of the compressor at a certain initial speed through the air inlet of the compressor, and absorbs mechanical energy in the impeller channel, so that the pressure and speed are greatly increased. , after entering the diffuser, the pressure further increases to achieve the purpose of supercharging. At a certain speed, when the gas flow rate of the compressor decreases to a certain extent, the gas will appear boundary layer separation phenomenon at the inlet of the impeller or diffuser, resulting in gas backflow. The separation vortex rapidly expands to other parts of the compressor channel, and the air flow appears strong oscillation, which causes the blades to vibrate strongly and pro...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an air intake guide vane adjustment device to solve the technical problem that the air intake guide vanes of existing aero-engines are difficult to adjust accurately

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