Synergic action device of preventing breath heavily and expanding stability of airbleed inside stator of multistage axial flow air compresdsor

Abstract

This invention discloses a stator internal gas-inducing efficient anti-surge steady expansion device of a multi-stage axial compressor composed of a stator, a gas-suction groove, a gas-inducing pipe and a gas-collecting chamber, in which the stator is stator blade in the multi-stage axial compressor, the groove, one or many, is placed in a region adjacent to flow separation existing on the surface of the stator suction face, the gas inducing pipe is in the stator blade and a ventilation pipe connecting suction pipes, the collecting chamber is set outside of the runner box and collects gas flows induced by the gas-inducing pipe after the suction groove absorbs small low energy gas flows, and the suction groove absorbs fluids of low energy on the surface of the stator suction side and transports them to the chamber and discharges them out of the system after mixed press.

Description

(1) Technical field: [0001] The invention provides an anti-swelling and stabilizing device which takes into account both the flow control of the stator blade boundary layer of an axial flow compressor and the air release between stages, and belongs to the technical field of aerospace vehicle engines. (two) background technology: [0002] At present, the axial flow fan / compressor is developing towards high performance, high load and high stability. Studies have shown that unsteady rotor-stator interference will affect the service life of the engine and generate a lot of noise. The flow field at the outlet of the upstream stator The pressure loss will aggravate the unsteadiness and non-uniformity of the downstream rotor inlet, and may also cause high-cycle fatigue of the engine. Therefore, it is of great significance to study an airflow control measure to effectively weaken the flow separation in the stator channel. [0003] As early as 1904, Prandtl proposed the method of del...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device for locally entraining air on the stator surface of an axial flow compressor to prevent panting and expand stability, so as to solve the problems of deflation between stages of an axial flow compressor, anti-surge expansion and stability, and boundary layer flow control on the surface of the stator blades.

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