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本文介绍一种可用来组成流体逻辑回路和方向控制阀的新颖的球式流体元件。这种球式元件的优点是:切换时间特别短,用在高压系统中时在两个切换终端位置上都没有泄漏,结构简单,工作可靠,寿命长。文中谈到两种基本元件的工作原理,逻辑门的结构及用来控制执行元件的方向阀的各种功能;给出了诸如切换条件、球式元件与先导阀的匹配、增益以及实测切换时间之类的静态与动态特性。鉴于目前主要是用于快速响应的电液阀,所以简单地考察了控制球式元件的先导级的电磁铁的最短动作时间。已经制成的多级电液阀的总切换时间为1～20毫秒,视系统压力和所需输出级尺寸而定。某些例子将说明这种球阀在液压机械控制中的应用。
This article describes a novel ball fluidic element that can be used to form fluid logic circuits and directional control valves. The advantage of this ball-type element is that the switching time is particularly short, there is no leakage at the two switching end positions when used in a high-pressure system, the structure is simple, the work is reliable and the service life is long. The article talks about the working principle of two basic components, the structure of the logic gate and the various functions of the directional control valve used to control the actuator. The switching conditions, the matching of the ball-type component and the pilot valve, the gain and the measured switching time Like the static and dynamic characteristics. In view of the current predominantly electro-hydraulic valve for quick response, the shortest operating time of the electromagnet controlling the pilot stage of the ball-shaped element is briefly examined. The total switching time of a multi-stage electro-hydraulic valve that has been made is 1 to 20 milliseconds, depending on the system pressure and the size of the desired output stage. Some examples will illustrate the ball valve in hydraulic machinery control applications.