用于间接气动控制的控制阀组件以及用于控制工作流体压力的方法

文档序号:1131930 发布日期:2020-10-02 浏览:17次 >En<

阅读说明:本技术 用于间接气动控制的控制阀组件以及用于控制工作流体压力的方法 (Control valve assembly for indirect pneumatic control and method for controlling working fluid pressure ) 是由 彼得·克鲁普尼克 西蒙·布罗泽 于 2019-01-30 设计创作,主要内容包括:本发明涉及一种用于间接气动控制的控制阀组件(1),以及一种用于控制工作流体压力的方法。本发明的目的是提供一种控制阀组件(1),以及一种使用控制流体对工作流体的压力进行控制的方法,所述组件和方法允许精确、灵敏和变速的控制,而无较大的性能损失和控制延迟。该目的的实现在于,控制阀组件(1)具有:两个气动的阀单元(2、3)、两个气动的阀单元一个接一个地布置;工作流体入口(4);控制流体入口;工作流体通道(6),其借助于两个阀单元(2、3)将工作流体入口(4)连接至出口(5);相应的阀活塞(9、10),阀活塞布置在第一和第二阀单元(2、3)的每个阀缸(7、8)内且可以在打开位置与闭合位置之间移动;相应的弹簧元件(11、12),弹簧元件将第一和第二阀活塞(9、10)朝向闭合位置偏置;以及相应的控制压力腔(13、14),控制压力腔连接至控制流体入口,以用于向每个阀活塞(9、10)施加控制压力,所述控制压力抵消弹簧元件(11、12)的偏置,其中,第一阀单元(2)被制造成使得当在第一控制压力腔(13)中施加控制压力时,第一阀活塞(9)从闭合位置移动至打开位置,并且相对于彼此成角度的两个相对的阀表面(16、17)布置在阀缸(8)和阀活塞(10)的表面上,以便在工作流体通道(6)的阻挡和控制区域(15)中于第二阀单元(3)中沿着运动方向V延伸,使得阀表面(16、17)形成阀开口,该阀开口在阀活塞(10)由于改变的控制压力而在阀缸(8)中移动时是打开的以使宽度变化,并且可以根据阀开口基于控制压力来细微地调节工作压力。(The invention relates to a control valve assembly (1) for indirect pneumatic control, and a method for controlling the pressure of a working fluid. The object of the present invention is to provide a control valve assembly (1), and a method of controlling the pressure of a working fluid using a control fluid, which allow precise, sensitive and variable speed control without major performance losses and control delays. This object is achieved in that the control valve assembly (1) has: two pneumatic valve units (2, 3) arranged one after the other; a working fluid inlet (4); a control fluid inlet; a working fluid channel (6) connecting the working fluid inlet (4) to the outlet (5) by means of two valve units (2, 3); a respective valve piston (9, 10) arranged within each valve cylinder (7, 8) of the first and second valve units (2, 3) and movable between an open position and a closed position; respective spring elements (11, 12) biasing the first and second valve pistons (9, 10) towards a closed position; and a respective control pressure chamber (13, 14) connected to the control fluid inlet for applying a control pressure to each valve piston (9, 10), which control pressure counteracts the bias of the spring element (11, 12), wherein the first valve unit (2) is made such that, when the control pressure is applied in the first control pressure chamber (13), the first valve piston (9) moves from the closed position to the open position, and two opposite valve surfaces (16, 17) angled with respect to each other are arranged on the surfaces of the valve cylinder (8) and the valve piston (10) so as to extend in the blocking and control region (15) of the working fluid channel (6) in the second valve unit (3) in the direction of movement V, such that the valve surfaces (16, 17) form a valve opening which is open for a width change when the valve piston (10) moves in the valve cylinder (8) as a result of the changing control pressure, and the working pressure can be finely adjusted based on the control pressure according to the valve opening.)

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