HYDRAULIC FLUID POWER AMPLIFIER Russian patent published in 2000 - IPC

FIELD: hydraulic automatic control systems used as a hydraulic distribution device. SUBSTANCE: amplifier has a movable fluid-jet element, plate composed of two parts with aligned intake conduits, additional reverse flow drain chamber communicating with the body drain chamber through conduits, located in the housing. The additional drain chamber is located between the first (in the direction of flow motion) and second (respectively) parts of the plate. The intake conduits of the first part of the plate have a permanent cross-section- made cylindrical. The intake conduits of the second part of the plate have diffusion outlet sections, and in the principal modification the inlet sections with permanent cross-section are made cylindrical. In a particular case the first part of the plate (in the direction of flow motion) with two intake conduits has an end surface on the side of the additional drain chamber made with a shaped cavity around the edges in the form of an annular shoulder and a recess in the center. EFFECT: reduced control signal, enhanced power gain and output power of amplifier. 8 cl, 1 dwg