A length-adjustable planar cascade test section wall plate

Abstract

The invention discloses a wall plate of a test section of a plane cascade with adjustable length. The wall plate of the plane cascade test section includes a rotating plate, a length adjuster, a guide rail pair, and a translation plate; the rotating plate is a straight plate, and the front end of the rotating plate is a fixed end, which is fixed at the nozzle outlet through a The rear end of the plate is a free end; guide rails are installed on the upper surface of the rotating plate. The translation plate is another straight plate, the upper surface of the translation plate is fixed with a slide block, and the slide block is mounted on the guide rail. The fixed end of the length adjuster is installed on the upper surface of the rotating plate, and the moving end of the length adjuster is connected with the rear end of the translation plate through a pin shaft. The length adjuster drives the slide block on the translation plate to move along the guide rail to realize the forward and backward movement of the translation plate. The panel of the planar cascade test section can adjust the length of the panel of the test section according to the test conditions of the cascade, with convenient operation, simple positioning, and high accuracy of length adjustment, which can save test preparation time and improve test efficiency.

Description

technical field [0001] The invention belongs to the field of basic research and test equipment for aero-engines, and in particular relates to a length-adjustable plane blade cascade test section wall plate. Background technique [0002] Aviation turbines (including fans / compressors and turbines) and gas turbines are the key components to maintain the thermodynamic cycle and generate thrust. The aerodynamic shape of the rotating / static blades determines the aerodynamic performance of aviation turbines and gas turbines. In order to design high-performance aviation jet engines and gas turbines, it is necessary to study the design method and flow characteristics of the impeller at the cascade (two-dimensional airfoil) level. In order to conduct experimental research on the flow and aerodynamic characteristics of the cascade channel under real flight conditions on the ground, it is necessary to build ground equipment that can simulate parameters such as the Mach number and Reynol...

AI Technical Summary

Problems solved by technology

The length adjustment of the upper and lower wall plates of the existing plane cascade test section is realized by combining multiple sets of wall plates with different lengths connected to the nozzle outlet. It is necessary to replace the upper and lower wall panels of different lengths of the test section, which is extremely inconvenient to operate, labor-intensive, and test efficiency is low; 2. The free and continuous adjustment of the length of the upper and lower wall panels of the test section cannot be realized, which may lead to some test conditions. can not achieve

3. There are many length specifications of the upper and lower wall panels, and the combined working conditions are complicated, which may easily cause the flow path difference and affect the smooth quality

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