Force measuring device and force measuring method for airfoil angle adjustment in water tunnel experiment

Abstract

The invention provides a force measuring device and a force measuring method for airfoil angle adjustment in water tunnel experiment in the technical field of hydraulic engineering. The force measuring device includes a rotatable force measuring transmission shaft. One end of the force measuring transmission shaft and an airfoil are integrally arranged. The other end of the force measuring transmission shaft is fixedly connected with one end of a force measuring balance. The other end of the force measuring balance is connected with an angle adjuster for driving the force measuring transmission shaft to rotate. In the left-right direction, one end of a water tunnel arranged opposite to the airfoil is connected with one end of a transparent sealing plate. A transparent disk is arranged at the other end of the sealing plate. A sealing mechanism is connected into the transparent disk. The sealing mechanism is connected with the force measuring transmission shaft. The force measuring device is convenient to disassemble, and improves the adjustment efficiency.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to an airfoil angle-adjusting force-measuring device and force-measuring method for water tunnel experiments. Background technique [0002] The airfoil is the basic unit of the hydraulic mechanical structure. In an axial flow pump, the geometry of different airfoils will affect the characteristics of the flow field inside the impeller. Unreasonable design of the airfoil geometry will cause a sudden change in the pressure on the blade surface, and the three-dimensional flow will be unstable, resulting in vibration, noise and even damage to the pump device. When the impeller rotates at high speed, it will also cause cavitation, which will significantly reduce the hydraulic performance of the pump and cause fatigue damage. Therefore, the study of the force load changes under different geometric shapes of the airfoil is very important for understanding the flow mec...

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Problems solved by technology

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to solve the technical problems of troublesome disassembly, low adjustment efficiency and low test accuracy in the prior art, and to provide an airfoil angle adjustment force measuring device and a force measuring device for water tunnel experiments. method, the present invention is convenient to disassemble and assemble, convenient to adjust, high in efficiency and high in testing accuracy

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