Vane regulation control device

Abstract

The invention discloses a vane regulation control device. The vane regulation control device comprises a variable geometric outlet vane and a corresponding data acquisition and processing system, wherein the outlet vane comprises an inlet adjustable section and an outlet fixed section, and a clearance is arranged between the tail edge of the inlet adjustable section and the front edge of the outlet fixed section; and the clearance consists of two sections of smooth curved lines, and a pressure surface communicates with a force absorption surface through the clearance. By utilizing pressure difference between the pressure surface and the force absorption surface, a small part of air is led into a convex surface from a concave surface through a seam so as to blow a boundary layer thin. Losses are reduced, and airflow turning angle is increased. According to the vane regulation control device provided by the invention, a regulation command is sent out by the data acquisition and processing system, the mounting angle of the front part of the outlet vane is adjusted in a stepping manner, and flow separation or blockage caused by too-large attach angle of a vane inlet when the vane runs under variable work conditions is avoided; and at the same time, as the rear of the vane is kept still, the rotating of the vane produces little influence on the flow of an exhaust diffusion section and a combustion chamber.

Description

technical field [0001] The invention belongs to the technical field of impeller machinery equipment, and relates to a compressor, in particular to a guide vane adjustment control device. Background technique [0002] When the compressor operates under the design conditions, the fluid can be better attached to the airfoil, and no large separation will occur. However, when the compressor is running at a small flow rate, the inlet of the guide vane will have a large positive angle of attack, and the airflow will separate at the back arc of the blade shape. The separation zone will develop rapidly and severely with the increase of the angle of attack, eventually leading to the flow of the compressor. Stall; when the compressor is running at a large flow rate, a large negative angle of attack will appear at the inlet of the guide vane. When the negative angle of attack reaches a certain level, it will easily cause blockage of the blade passage and reduce the flow capacity of the ...

AI Technical Summary

Problems solved by technology

But for the outlet guide vane, it is necessary to consider the requirements of the combustion chamber and the exhaust diffuser section on the outlet airflow angle of the guide vane. If the outlet guide vane rotates as a whole, when the adjustment amount is too large, the outlet airflow angle of the guide vane will decrease. A large deviation from the design condition will adversely affect the flow of the exhaust diffuser and the combustion chamber. Therefore, it is best to design a segmented outlet guide vane, which can adjust the front section of the outlet guide vane and fix the rear section.

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