Simulation and experimental study on cavitation and noise of hydraulic cone valve

Abstract

Purpose Aiming at the cavitations and noise problem of hydraulic cone valve and based on the radial force analysis of the valve core, the radial deviation of the spool is considered to obtain the changing rules of cavitations and noise. Design/methodology/approach The solid model of the internal flow field of cone valve is established. The mesh models are divided using ICEM-CFD software. The numerical simulation of the liquid-gas two-phase flow is performed on the cavitation and noise of the flow field inside the cone valve based on FLUENT software. The visible experimental platform for cavitation and noise of hydraulic cone valve is built. According to the contrast of the experimental results, the correctness of the simulation results is verified. Findings The results show that the radial deviation causes the position of the cavitation accumulates in the valve cavity on the side of the upper cone. In addition, the strength of the cavitation changes slowly with the half cone angle of 45°, and the noise level is the smallest. Furthermore, appropriately increasing the opening degree within a reasonable range can effectively suppress cavitation and reduce the noise level. Originality/value The cavitation can be suppressed and the noise level can be reduced by means of changing the three factors, which lays the foundation for the design and theoretical research of the cone valve.

Study on Unsteady Cavitation Flow and Pressure Pulsation Characteristics in the Regulating Valve

“…e cavitation inception, development, and collapse in the flow passage will lead to pressure oscillation in the regulating valve, vibration, noise, early valve failures, and affecting the stability of the hydraulic system [1][2][3]. erefore, it is essential to understand thoroughly the complex flow characteristics inside the valve in order to improve the running safety of the regulating valve [4][5][6].…”