A multi-position adjustable servo valve positive and negative flushing device

Abstract

The invention relates to a multi-station adjustable servo valve front and back flushing device, which includes a hydraulic energy module, a flushing parameter control module, and flushing tooling; Perform secondary filtration before the flushing parameter control module; the forward and reverse flushing device of the multi-station adjustable servo valve includes multiple stations, each station corresponds to a group of flushing parameter control modules, and the flushing parameter control module controls the flow of the flushing liquid Periodic change of pressure and flow rate; the flushing tool realizes the position switching of different servo valves to be flushed, and realizes the forward and reverse flushing of the servo valves to be flushed. The flushing device of the present invention can quickly adjust the liquid flow direction, pressure, and flow parameters of multiple servo valve flushing oil circuits at the same time, and each station can perform forward and reverse flushing of different types of servo valves.

Description

technical field [0001] The invention relates to a forward and reverse flushing device for a servo valve, in particular to a servo valve flushing device for a servo mechanism of a launch vehicle. Background technique [0002] The servo valve is the core component commonly used in aerospace servo mechanisms. With hydraulic oil as the working medium, it converts small-power electrical signals into the movement of the slide valve, and then the movement of the slide valve controls the direction of the high-pressure liquid flow to the servo mechanism. And size, the piston rod of the control servo mechanism pushes the engine (chamber) to swing. Servo valve control holes, slits, and mating parts have small fit clearances, high requirements for the cleanliness of the working medium, fine cleaning of parts, high environmental cleanliness during assembly and debugging, and high requirements for equipment pollution control. Based on this feature, excess material is extremely harmful to...

AI Technical Summary

Problems solved by technology

Before the servo valve is debugged, the assembled servo valve will be flushed. Because there are many special-shaped grooves, blind holes, and inclined holes in the servo valve, the traditional servo valve debugging and testing equipment for flushing can only perform constant flow, constant pressure, and fixed direction. Flushing, process residues and excess generated by work are not easy to leave the dead zone of the flow field. The problem of excess has not been effectively solved. Servo mechanism test problems and even whole arrow test problems caused by servo valve excess have occurred from time to time

The traditional flushing method occupies the servo valve debugging test bench, and the flushing efficiency is low, which affects the production progress of the servo valve

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