Effect of cone throttle valve pressure on cavitation noise

Abstract

The hydraulic cone throttle valve is prone to cavitation and cavitation noise. To address this problem, the authors studied the influence of cone throttle valve pressure and flow rate on cavitation noise. First, they used fluid–solid coupling principles to conduct a finite volume simulation of the cone throttle valve and obtain the cavitation distribution in its flow channel under different pressures. Then, they built an experimental apparatus to perform visualisation measurements on the cone throttle valve. The authors used the valve core opening to adjust the experimental pressure, used a high-speed camera to shoot the morphological changes in cavitation under different pressures, and measured the valve noise. The cavitation of the cone throttle valve was affected by the pressure. The larger the pressure difference between the front and back of the valve was, the more obvious the cavitation was and the stronger the cavitation noise was. The cavitation noise can be suppressed by reducing the pressure difference between the front and back of the valve.