Differential guide vane section and guide vane adjusting device for vane compressor

Abstract

The invention relates to a differential guide vane section and a guide vane adjusting device for a vane compressor, and belongs to the field of fluid machinery. The differential guide vane section has an integral laminated structure; the number and distribution rule of differential vanes are same as those of fixed guide vanes in a guide vane support structure; and through elastic sheet grooves are processed in the centers of roots of one or more differential vanes. The guide vane adjusting device comprises a guide vane support, the differential guide vane section, elastic sheets and a rotating ring, wherein the fixed guide vanes, a sleeve, a guiding cone and a support central axis in the guide vane support are formed at one time; a positioning step is arranged on the outer periphery of the tail of the sleeve; the inner wall of the sleeve is provided with a limit groove; the elastic sheets are fixed to the guide vane support; the differential guide vane section passes through the elastic sheet grooves one by one and are fixed to the central axis of the guide vane support; and a rotating bar is pushed into the limit groove through a rotating bar pushing groove and is sleeved in the rotating ring. The geometric angle non-equiangular change of the guide vanes is realized along the vane height direction, and an attack angle matching method under all conditions is obtained.

Description

Technical field [0001] The invention relates to a differential guide vane slice and an adjustable guide vane device of a vane compressor, which is used to improve the airflow angle matching characteristics between the compressor guide vane and the downstream runner, so as to greatly expand the compressor flow range and improve the compressor The purpose of working condition adaptability. It belongs to the field of fluid machinery. Background technique [0002] Vane compressor is a device used to realize gas pressurization, which is widely used in aviation, aerospace, automobile, chemical industry, and electric power industry. Its core component is a high-speed rotating blade impeller, which can be divided into axial flow, radial flow and mixed flow. Under certain high-speed operating conditions, the maximum gas mass flow that can pass through the compressor is called the blockage flow; as the pressure ratio increases, the gas mass flow through the compressor gradually decreases...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a differential guide vane slice and an adjustable guide vane device for a vane compressor, which can effectively solve the problem that the conventional airflow pre-swirl cannot take into account the airflow angle of attack of the blade root and blade tip at the same time, and realize that the airflow angle of attack is along the radial direction. Synchronous control to obtain excellent stability expansion effect

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