Rotor/controlled stator motion mechanism capable of improving performance of axial-flow compressor

Abstract

A rotor / controlled stator motion mechanism capable of improving performance of an axial-flow compressor comprises a rotor blade row driven by a spindle and a controlled stator blade row for predetermining frequency and amplitude of periodic swing around a radial shaft of the controlled stator blade row. A rotor rotates according to a tradition compressor structure, and positions of rotor blades relative to stator blades in a back row are provided by a measurement feedback system. According to the positions of the rotor blades relative to the stator blades in the back row, the stator blades are controlled by a driving device in real time to swing continuously according to the predetermined amplitude, and interaction is generated by the stator blades and the rotor blades skimming over the stator blades so as to improve load. Motive power required by swing of the stator blades is provided by the spindle through a gear, a universal joint and a cam which serve as a transmission device, and can also be provided by adding a stepping motor on the stator blades. By means of the rotor / controlled stator motion mechanism capable of improving the performance of the axial-flow compressor, unsteady force can be generated through relative motion of the rotor and a controlled stator, acting capacity of the rotor blades is improved, and pressure rising coefficient and pressure ratio of a whole compressor system are increased.

Description

technical field [0001] The invention relates to a rotor / controllable stator motion mechanism capable of improving the performance of an axial flow compressor, which is a rotor / controllable stator motion mechanism, specifically, the stator blades rotate with the main shaft according to the rows of adjacent rotor blades In the case of real-time reciprocating swings with a certain frequency and amplitude. It belongs to the technical field of aero-engines. Background technique [0002] As a device that works on gas to increase its pressure and flow rate, the axial flow compressor is widely used in aero-engines, ground gas turbines, marine power plants, etc. With the continuous development of the aviation industry, the requirements for the thrust-to-weight ratio and overall performance of aero-engines continue to increase. As one of the three core components of aero-engines, the compressor needs to provide a higher pressure ratio, that is, a greater working capacity. [0003] A...

AI Technical Summary

Problems solved by technology

In actual work, the continuous increase of the tip speed of the rotor blade often leads to the appearance of shock waves, resulting in shock wave loss, which will also bring many difficulties to the design

Therefore, it is very difficult to further improve the working capacity of the axial flow compressor designed with the current traditional rotor / stator kinematic mechanism

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