Effect of sleeve orifices ratio on flow performance and hydrodynamic noise in the two-stage sleeve control valve

Abstract

Two-stage sleeve control valve has been widely implemented in high-pressure difference hydraulic system, whose function is to reduce hydrodynamic noise. The sleeve with orifices plays a significant role in reducing the hydrodynamic noise. The ratio of orifices diameter between outer sleeve and inner sleeve, Ri is investigated in this paper. The coupling effect of Ri on the flow field and hydrodynamic noise is analyzed deeply by URANS and FW-H model. Furthermore, the pressure, velocity, turbulent kinetic energy and sound pressure level of the flow field are monitored. The results indicate that higher Ri will restrict the flow velocity in the orifices, and the distributed pressure drop of two sleeves will be even. The velocity of flow in the outer sleeve reduces from 130 m/s to 90m/s with the increase of Ri. In addition, larger Ri can reduce the hydrodynamic noise and obtain higher flow capacity. When the Ri is 1.2, the sound power level distributes evenly in the gap, and the radiation intensity of the sound source is the smallest. The study can provide a reference for the design of sleeves in high-pressure control valves.

Numerical Simulation and Experimental Study on Internal Depressurization Flow Characteristics of a Multi-layer Sleeve Regulating Valve

“…Siddiqi et al (2022) focused on the heat-transfer performance and pressure-drop characteristics of ZnO/DIW-based nanofluids (NFs) in horizontal mini tubes of different diameters. In a two-stage sleeve regulating valve, Yu et al (2022) evaluated the effect of sleeve orifice ratio on flow performance and hydrodynamic noise. They also measured the flow-field pressure, velocity, turbulent kinetic energy, and sound pressure levels.…”