节流槽结构参数对阀开启压力冲击及空化特性的影响研究

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摘要液压控制阀阀芯节流槽的结构对阀的动态特性影响强烈，不良节流槽结构将导致极大的液压阀开启瞬间压力冲击。针对某型号负载敏感多路阀在甘蔗联合收割机的应用中出现啸叫和液压冲击的问题，结合动网格与RNG-K-ε湍流模型，对U+T型节流槽和V型节流槽的压力冲击及空化进行了对比分析，发现同等条件下V型槽的阀芯较U+T型槽的阀芯的压力冲击下降了19.37% ,最大空化程度降低了43.7%。选取V型节流槽开展进一步研究，通过正交试验获取不同节流槽结构参数下的压力峰值；采用BP神经网络建立V型节流槽结构参数与压力冲击的代理模型，结合灰狼算法（GWO）得到节流槽结构参数的最优配置；依据优化结果制作阀芯并进行试验，结果显示，抑制压力冲击效果显著，系统压力超调下降至原来52.4%。

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	陈远玲
	欧阳崇钦
	彭卓
	陈承宗
	石浩
	王梦乔

关键词 ：流场仿真, BP代理模型, GWO, 节流槽优化, 冲击抑制

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%.

Key words： CFD BP proxy model GWO throttle groove optimization impact of inhibition

收稿日期: 2022-03-20 出版日期: 2024-04-15

引用本文:

陈远玲，欧阳崇钦，彭卓，陈承宗，石浩，王梦乔. 节流槽结构参数对阀开启压力冲击及空化特性的影响研究[J]. 振动与冲击, 2024, 43(7): 50-56.
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. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(7): 50-56.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2024/V43/I7/50

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