【摘要】 电液伺服阀是高精度深海液压装备中的核心控制元件，其性能与可靠性是决定深海液压系统控制精度与可靠性的关键因素。深海极端工况下，阀芯与阀套的微小形变影响电液伺服阀的控制性能，建立了双喷嘴挡板阀三维模型，基于变海深环境工况，对滑阀在不同海深下形变规律与内泄漏进行研究分析。研究结果表明：当海深为12 000 m时，阀芯与阀套之间的间隙降至2.752μm,泄漏量减少到0.020 5 L/min,与陆地环境相比，形变量接近50%,泄漏量减少了98%。该结果可用于预测电液伺服阀在深海环境中的使用，本研究对液压系统的研究具有重要意义。更多还原

【Abstract】 Electro-hydraulic servo valve is the core control element in high-precision deep-sea hydraulic equipment, and its performance and reliability are the key factors to determine the control accuracy and reliability of deep-sea hydraulic system. Under the extreme working conditions of the deep sea, the tiny deformation of the valve spool and the valve sleeve affects the control performance of the electro-hydraulic servo valve. This paper establishes a three-dimensional model of the double-nozzle baffle valve, and based on the environmental conditions of the variable depth of the sea, it studies and analyzes the deformation law and internal leakage of the slide valve under different depths of the sea. The results show that when the sea depth is 12 000 m, the gap between the spool and the valve sleeve is reduced to 2.752 μm, and the leakage is reduced to 0.020 5 L/min, which is close to 50% of the deformation and 98% of the leakage compared with the land environment. The results can be used to predict the use of electro-hydraulic servo valves in deep-sea environments, and this study is of great significance to the research of hydraulic systems.更多还原