Active-control hydraulic type rub-impact fault detection test apparatus

Abstract

The invention discloses an active-control hydraulic type rub-impact fault detection test apparatus. The apparatus is characterized in that: six sets of hydraulic driving systems are arranged on a periphery of a rotor wheel disc; a first hydraulic cylinder and a second hydraulic cylinder are respectively arranged on a vertical direction of the rotor wheel disc; a third hydraulic cylinder and a fourth hydraulic cylinder are arranged on a horizontal direction; a fifth hydraulic cylinder and a sixth hydraulic cylinders are arranged at a positive / negative 45 degree direction of an upper half disc of the rotor wheel disc; the each hydraulic cylinder is provided with a hydraulic oil return tank and a constant voltage tank; inlet and outlet pipelines of the hydraulic oil return tank and the constant voltage tank are respectively provided with an electromagnetic pressure regulating valve and a pressure sensor; an oil pump, a piston connecting rod, an elastic hinge, a strain gauge and a rub-impact column, which are successively connected, are arranged between the oil tank and the constant voltage tank; in order to simulate different rub-impact states, the rub-impact column which is at the positive / negative 45 degree direction is directly contacted with the periphery of the rotor wheel disc. Rub-impact pieces at the horizontal and vertical direction contact with the periphery of the rotor wheel disc. A measurement and control computer can calculate and control a pressure applied by a rub-impact part and a stress state so as to achieve a purpose of simulating and detecting a pluralityof rub-impact fault states.

Description

technical field [0001] The invention belongs to the rubbing detection technology of rotating machinery, in particular to an experimental device for artificially controlling the rubbing of moving parts and measuring its effect. Background technique [0002] It is of great practical significance to detect the results of rubbing accidents of rotating machinery. Many related research institutions have built special experimental systems or devices for this purpose. Among them, the device for rubbing or friction testing of mechanical rotors generally uses a test bench composed of rubbing nails, stator snap rings and other components for experiments. By manually adjusting the fastening screw to simulate a single rubbing fault state, the adjustment of the rubbing degree can only be made into a simple qualitative classification of single states such as slight rubbing and severe rubbing. The problem caused by this is that it is impossible to carry out actual simulation of the degree...

AI Technical Summary

Problems solved by technology

The problem caused by this is that it is impossible to carry out actual simulation of the degree of rubbing failure. The reason is that the movement and force of each rubbing part during the simulation and testing process cannot be accurately controlled. Therefore, the existing rotor rubbing test The detection device is difficult to meet the actual requirements

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