为深入认识三转子比例控制器的内泄漏特性，运用Ansys Forte软件对比例控制器内部流场进行了三维动态仿真，分析了入口压力对比例控制器内部流动及泄漏量的影响。结果表明：比例控制器数值仿真所得流量与试验测试数据吻合良好，发现其出口流量脉动率高于入口流量脉动率，但流量脉动率随着入口压力的升高而减小；比例控制器的内泄漏量随着入口压力的升高而增大，其中压力剪切作用下的层流泄漏流动造成的总泄漏量较多，孔口出流泄漏流动造成的总泄漏量减小，同时层流泄漏流动前后压差高于孔口出流前后压差。研究成果为优化三转子比例控制器优化提供了理论指导。
In order to deeply understand the internal leakage characteristics of the tri-rotors proportional controller, the three-dimensional dynamic simulation of the internal flow field of the proportional controller was simulated by Ansys Forte, and the influence of inlet pressure on the internal flow and leakage of the proportional controller was analyzed. The results show that the flow rate obtained by numerical simulation of the proportional controller coincided with the test data. It is found that the flow pulsation rate at the outlet is higher than that at the inlet, but the flow pulsation rate decreases with the increase of the inlet pressure. Moreover, the internal leakage of the proportional controller increases with the increase of the inlet pressure. The leakage caused by the laminar leakage flow under the action of pressure shearing is increased, and the total leakage caused by the leakage flow at the outlet of the orifice is reduced when the inlet pressure was increased. The pressure difference of the laminar leakage flow is higher than the pressure difference of the outlet of the orifice. The research results provide theoretical guidance for optimizing the tri-rotors proportional controller.
2023,45(22): 61-66 收稿日期：2022-10-16
DOI：10.3404/j.issn.1672-7649.2023.22.011
分类号：TJ630.3
基金项目：浙江省属高校基本科研业务费专项资金资助项目
作者简介：李钧浩(1999-),男,硕士研究生,研究方向为流量计量
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