Effects of structural parameters of throttling groove on valve opening pressure impact and cavitation characteristics

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (7) : 50-56.

CHEN Yuanling, OUYANG Chongqin, PENG Zhuo, CHEN Chengzong, SHI Hao, WANG Mengqiao

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Abstract

The structure of the throttle groove of the spool of the hydraulic control valve has a strong impact on the dynamic characteristics of the valve, and a poor throttle groove structure will lead to a great hydraulic valve opening instant pressure shock. For a model of load-sensitive multi-way valve in the application of sugarcane combine harvester whistling and hydraulic shock, combined with dynamic mesh and RNG-K-ε turbulence model to compare the pressure shock and cavitation of U + T throttle groove and V throttle groove. It was found that the pressure shock of the spool with V-groove decreased by 19.37% and the maximum cavitation decreased by 43.7% compared with that of the spool with U+T-groove under the same condition. The V-groove was selected for further study, and the peak pressure under different throttle groove structural parameters was obtained through orthogonal tests. The BP neural network is used to establish an agent model of the structural parameters of the V-throttle groove and the pressure impact, and the optimal configuration of the structural parameters of the throttle groove is obtained by combining with the Gray Wolf Algorithm (GWO). According to the optimization results of the production of valve spool and test, the results showed that the inhibition of pressure shock effect was significant, the system pressure overshooting down to the original 52.4%.

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CFD / BP proxy model / GWO / throttle groove optimization / impact of inhibition

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CHEN Yuanling, OUYANG Chongqin, PENG Zhuo, CHEN Chengzong, SHI Hao, WANG Mengqiao. Effects of structural parameters of throttling groove on valve opening pressure impact and cavitation characteristics[J]. Journal of Vibration and Shock, 2024, 43(7): 50-56

References

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