Plane cascade experimental device capable of independently adjusting mounting angle

Abstract

The invention provides a plane cascade experiment device capable of independently adjusting a mounting angle. The plane cascade experiment device comprises an upper grid plate, a lower grid plate, a first spacing column, a second spacing column, blades, an upper rotating disc, an upper pressing plate, a lower rotating disc and a lower pressing plate. An operation tool acts on the operation hole to enable the upper rotating disc to rotate clockwise or anticlockwise, when the upper rotating disc rotates, the upper pressing plate is driven to rotate synchronously through the first screw and the second screw, and when the upper rotating disc rotates to a required angle, the first screw and the second screw are screwed down, so that the position of the upper rotating disc is fixed. The independent adjustment of the mounting angle of each blade can be independently realized through the independent mounting angle adjusting unit, so that the cost is effectively saved; the pressing plate, the rotating disc and the grid plate which are specially designed are adopted, on one hand, the blade angle can be flexibly adjusted in the clockwise or anticlockwise direction; and on the other hand, the position of the turntable is fixed firmly and cannot deflect in the wind tunnel experiment process, so that the wind tunnel experiment precision is ensured.

Description

technical field [0001] The invention belongs to the technical field of plane cascade experimental devices, in particular to a plane cascade experimental device that can independently adjust the installation angle. Background technique [0002] With the improvement of aero-engine technology, various engines generally use adjustable vane controllers to adjust the position of the compressor stator blades, so as to improve the performance of the engine's off-design point and expand the stable working range of the compressor. At present, most modern aero-engines use multi-stage stator blade adjustable technology. By adjusting the angle of the stator blades, the rotor blades can work at a satisfactory angle of attack, thereby avoiding surge, and ensuring that the compressor can still operate under design conditions. The rotor blades work at a basically satisfactory angle of attack, which improves the working characteristics of the compressor and expands the stable working range. ...

AI Technical Summary

Problems solved by technology

This structure has the following problems: after the cascade experimental device is finished, the installation angle of the blade is uniquely determined, so the installation angle of the blade is fixed and cannot be adjusted

When it is necessary to conduct multi-working-condition experiments with various installation angles, it is necessary to process multiple sets of cascade test devices with different installation angles. Tunnel experiment time, reducing the efficiency of wind tunnel experiments

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