A Stress-Strain Test-bed for Static Blade Adjustment Mechanism Considering the Effect of Temperature

Abstract

The invention belongs to the technical field of aero-engine testing, and provides a stress-strain test bench for a vane adjustment mechanism considering the influence of temperature, comprising an inner casing, a linear motor installation part is provided on the top side of the inner casing, and the linear motor is installed A linear motor is installed on one side of the top of the head, and a rocker is installed at the end of the linear motor, and the rocker is locked and connected to a rotating shaft. Inside, the main transmission rod is locked and installed at the bottom of the rotating shaft, and the other end of the main transmission rod is rotatably installed with a connecting rod, and the connecting rod is rotatably connected to multiple pairs of transmission rods. The invention uses a high-frequency heater to heat the blades, and the structure is simple and easy to realize. By comparing the rocker arm strain values ​​of the blades without heating, the influence of temperature on the rocker arm structure strain of the stationary blade adjustment mechanism can be obtained.

Description

Technical field [0001] The present invention belongs to the vane engine test aviation technology, particularly to a consideration of the influence of the temperature adjustment mechanism of stress strain test station Background technique [0002] In aviation engines, the adjustable stator vanes to change the angle of the blade itself is mounted to be rotatable about a fixed axis, which can be used to improve the stability range of the compressor, it has been widely used in aviation engines. Adjustment means for changing the adjustable stationary compressor vane angle of the steering mechanism. Typically, while generally present in the multi-stage compressor vanes adjustable, in operation, the temperature of high pressure compressor blades affect the performance of the adjustment mechanism also obvious. [0003] In mediation, the relatively weakest of the rocker arm the connecting link structure and the blade ring, Experimental study relevant prior art is also lacking, and the pri...

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Problems solved by technology

[0003] In the adjustment mechanism, the relatively weakest structure is the rocker arm connecting the linkage ring and the blades. There is still a lack of relevant experimental research in the prior art, and in the prior art, the test bench is also circumferentially distributed due to the circular distribution of the adjustment mechanism. It is not conducive to the test. In order to study the stress and strain of the weak links at all levels of the vane adjustment mechanism in motion under the influence of temperature, a stress-strain test bench for the vane adjustment mechanism is designed considering the influence of temperature.

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