Variable camber blade type tandem stator and air compressor

Abstract

The invention discloses a variable camber blade type tandem stator. A driving mechanism drives a first linkage ring and a second linkage ring to rotate, front blades of a front row of stators are driven to rotate and rear blades of a rear row of stators are driven to rotate to realize simultaneous adjustment of the installation angle of front blades of the front row of stators and rear blades of the rear row of stators to enable inlet airflow attach angle of the front row of stators to maintain in an appropriate range under different working conditions, the reduction of the flow separation isfacilitated, the occurrence of rotational stall or surge is avoided, and the stable working range of an air compressor is increased; and meanwhile, the requirements of a downstream rotor for the inletairflow angle are met, and the performance is improved. Through the driving structure, the simultaneous adjustment of different angles of the front blades of the front row of stators and the rear blades of the rear row of stators is achieved, the number of times of operation in the actual use process is reduced, and the operation efficiency is improved. The invention further provides the air compressor comprising the variable camber tandem stator.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a variable-curvature vane type tandem stator. In addition, the present invention also relates to a compressor comprising the variable-curvature vane tandem stator. Background technique [0002] Modern high-performance aero-engines put forward higher requirements for their key components, compressors. Compressors with high load, high efficiency and wide stable working range are an important development direction of aero-engines in the future. [0003] The tandem stator technology is often used in the design of high-load compressors. It can better control the velocity distribution on the blade surface and the development of the boundary layer. It has the advantages of large airflow turning angle, small total pressure loss, and wide operating range. attention of foreign researchers. The principles of tandem stators to control internal flow and reduce flow loss are as follows: 1) The bo...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a variable camber vane type tandem stator and a compressor to solve the technical problem that the inlet air flow angle of the conventional tandem stator deviates greatly from the design working condition, resulting in a sharp increase in flow loss and further affecting the performance of the compressor. , in addition to solving the technical problem that the conventional tandem stator cannot provide a suitable air intake direction for the downstream rotor, thereby affecting the performance of the downstream rotor

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