Guide blade regulator for pressure ratio control of gas compressor

Abstract

The invention belongs to the field of aircraft engine control, and relates to a guide blade regulator for pressure ratio control of a gas compressor. The guide blade regulator comprises a bellows P3,a bellows P1, a pressure ratio lever (8), a rack (9), a cam (10), a comprehensive lever (11), a fulcrum (15), a sliding block (7) and an actuating mechanism. By means of the guide blade regulator, theoutlet pressure (P3) and inlet pressure (P1) of a compressor can be sensed respectively, the ratio (P3 / P1) can be obtained through mechanical calculation, and the angle of an engine guide blade can be adjusted through a mechanical hydraulic mechanism so as to ensure the stable operation of an engine. The mechanical hydraulic type gas inlet guide blade regulator for pressure ratio control of an aeroengine is realized for the first time in engineering, is simple in structure, solves the conversion problem of input parameters, and can ensure stable operation of the engine. The guide blade regulator has a plurality of adjusting pins, thereby being better in performance adjustability. Required properties can be conveniently obtained through adjustment in terms of different lever ratios, cam sizes, bellows precisions and initial installation positions of different products.

Description

technical field [0001] The invention belongs to the field of aircraft engine control, and relates to a guide vane regulator for compressor pressure ratio control. Background technique [0002] The main function of the compressor of an aircraft engine is to rotate and compress the air that enters the compressor through the compressor inlet guide vane, increasing the pressure and speed of the gas, and preparing for the mixed combustion of fuel entering the combustion chamber. When the gas is separated at the inlet of the compressor, and the separation vortex extends to the entire compressor, the airflow will oscillate strongly and the blades will vibrate. This phenomenon is called surge. The guide vane regulator adjusts the angle of the guide vane at the inlet to make The compressor is far away from the surge boundary, improving the anti-surge capability. At present, the mechanical hydraulic guide vane regulator mainly uses the speed of the compressor as the control parameter...

AI Technical Summary

Problems solved by technology

At present, the mechanical hydraulic guide vane regulator mainly uses the speed of the compressor as the control parameter for the guide vane adjustment. One of the components of this type of regulator needs to rotate at high speed with the compressor to feel the speed. Therefore, the structure of the regulator is complicated, and the parts High strength requirements

According to the ratio of compressor outlet pressure and inlet pressure as the control parameter of guide vane adjustment, there is no such regulator in China

Images