Length-adjustable plane blade grid test section wall plate

Abstract

The invention discloses a length-adjustable plane blade grid test section wall plate. The plane blade grid test section wall plate comprises a rotating plate, a length regulator, a guide rail pair and a translation plate. The rotating plate is a straight plate, the front end of the rotating plate is a fixed end, the fixed end is fixed at the outlet of the spray pipe through a pin shaft, and the rear end of the rotating plate is a free end. Guide rails are installed on the upper surface of the rotating plate. The translation plate is another straight plate, and a sliding block is fixed on the upper surface of the translation plate and clamped 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 sliding block on the translation plate to move along the guide rail, and front-back movement of the translation plate is achieved. According to the plane blade grid test section wall plate, the length of the test section wall plate can be adjusted according to blade grid test conditions, operation is convenient and fast, positioning is easy, the length adjusting precision is high, the test preparation time can be saved, and the test efficiency is improved.

Description

technical field [0001] The invention belongs to the field of aero-engine basic research test equipment, and in particular relates to a length-adjustable planar cascade test section wall plate. Background technique [0002] Aviation turbines (including fans / compressors and turbines) and gas turbines are key components for maintaining thermal cycles and generating thrust, and the aerodynamic shape of their rotor / stator blades determines the aerodynamic performance of aviation turbines and gas turbines. In order to design high-performance aerojet engines and gas turbines, it is necessary to study the design method and flow characteristics of the turbine at the cascade (two-dimensional airfoil) level. In order to conduct experimental research on the aerodynamic characteristics of cascade passage flow under real flight conditions on the ground, it is necessary to build ground equipment that can simulate parameters such as the Mach number and Reynolds number of the cascade flow du...

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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