Study on the influence of structural parameters on the flow and cavitation characteristics of tandem multi-stage pressure-reducing valves

Wang, Guan; Jianfei, Deng; Linyuan, Kou; Wenghui, Wang; Qianfeng, Gao; Zhu, Xuejun

doi:10.1016/j.flowmeasinst.2022.102230

Cited by 7 publications

(1 citation statement)

References 28 publications

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“…Gao et al found that a reduction in outlet area of about 50% effectively reduced cavitation near the valve orifice and inhibited cavitation [12]. Guan et al observed that increasing the inclination of the flow channel can improve the reduction of cavitation intensity [13]. Han et al found that different forms of throttles cause different degrees of cavitation [14,15].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Valve Seat Cone Angle on Small Opening Direct-Acting Relief Valve Cavitation Noise

Qiu,

Yang,

Zhang

et al. 2024

Machines

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Direct-acting relief valves are important pressure-control components in hydraulic systems; however, noise problems are now common. This study aimed to reduce and numerically analyze the valve cavitation and noise using the Zwart–Gerber–Belamri (ZBG) model with the Ffowcs Williams and Hawkings (FW–H) model to optimize the design based on the sound field perspective. First, a direct-acting relief valve flow field model was established to determine the relationship between the seat structure and the degree of cavitation through a CFD (Computational Fluid Dynamics) simulation. Second, sound field analysis was conducted based on the cavitation and non-cavitation flow fields, respectively, and the resulting noise levels were compared. Finally, prototypes of the relief valve were manufactured, and noise levels between the original and optimized valves were compared. The results revealed that cavitation within the relief valve generated noise while optimizing the valve seat cone angle suppressed this phenomenon, thereby reducing the noise emitted by the optimized valve by 18.2 dB compared to the original valve. These findings can serve as a guide for designing and optimizing direct-acting relief valves.

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