Plane cascade experimental device with variable mounting angle and experimental method

Abstract

The invention provides a plane cascade experimental device with a variable mounting angle and an experimental method. The device comprises an upper grid plate, a lower grid plate, a fixed column, blades, an upper stepped shaft, a lower stepped shaft and a mounting angle adjusting mechanism. The mounting angle adjusting mechanism comprises a connecting rod, a crank, mounting angle positioning holesand a positioning bolt and is arranged above the upper grid plate, the plurality of mounting angle positioning holes are formed in the upper grid plate, and each mounting angle positioning hole is located at the periphery of a corresponding upper stepped hole. Moreover, the arrangement angles of the mounting angle positioning holes relative to the corresponding upper stepped holes are different.The advantages of the present invention are that the mounting angle can be continuously and accurately adjusted; the experiment cost of the performance law experiment research of an adjustable guide vane / stationary vane is reduced, the advantages that the adjustment is convenient and fast, the time and labor are saved, the operation is simple, the adjustment precision is high, the leakage loss issmall, the application range is wide, etc., are realized, and the problems in the background technology can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of plane cascade experimental devices, and in particular relates to a plane cascade experimental device and an experimental method with variable installation angles. Background technique [0002] The planar cascade wind tunnel is the basic experimental equipment for axial-flow turbomachinery research, and is widely used in all aspects of turbomachinery aerodynamic basic research such as turbomachinery design, new blade development, flow mechanism exploration, and new technology verification. [0003] Currently, if figure 1 As shown, it is the principle structure diagram of the test section of the plane cascade wind tunnel, and the method adopted is: (1) Firstly, according to the size and periodicity requirements of the test section 1 of the cascade wind tunnel, the planar cascade test piece is designed, among which, The plane cascade test piece is composed of several identical straight blades, upper grid an...

AI Technical Summary

Problems solved by technology

Therefore, in order to meet the requirements of wind tunnel experiments with different installation angles, it is usually necessary to process multiple sets of plane cascade test pieces with different installation angles. It will greatly increase the time of wind tunnel test and reduce the efficiency of wind tunnel test

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