Comprehensive performance testing device for damper

Abstract

The invention provides a comprehensive performance testing device for a damper. A platform is provided with two guide rails; the upper sides of the two guide rails are provided with a guide post respectively; one end of each guide post is fixed on the guide rail through a front support and a rear support, while the other end is fixed on the guide rail through a movable cross beam capable of sliding on the guide rail; a servo hydraulic cylinder is arranged between the front support and the rear support; a piston rod of the servo hydraulic cylinder is connected with a left flange through the front support; one side of the movable cross beam facing the left flange is provided with a right flange; front ends of two push-and-pull hydraulic cylinders are connected with the movable cross beam, rear ends of the two push-and-pull hydraulic cylinders are connected with the front support; a servo hydraulic cylinder is provided with an integrated valve block; the integrated valve block is providedwith a large-flow servo valve and a small-flow servo valve which are communicated with the servo hydraulic cylinder; and inlets and outlets of the two flow servo valves are provided insert type stopvalves. The device realizes measurement on dynamic and static performance of the damper through switching among cartridge valves, leads the front support, the rear support, the movable cross beam andthe guide posts to form a rigid frame, and reduces influence of deformation of the device on testing accuracy.

Description

technical field [0001] The invention relates to a damper comprehensive performance testing device, which is used for testing the performance of the damper. Background technique [0002] The damper is a vibration control device sensitive to speed. It is widely used in pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants, etc., to control impact fluid vibrations (such as rapid closing of the main steam valve, The vibration of the piping system stimulated by the discharge of safety valve, water hammer, broken pipe, etc.) and earthquake. For example, my country will build about 15 million-kilowatt nuclear power plants before 2010, and the demand for dampers is very large. Before the hydraulic damper is connected with the anti-shock and vibration equipment, its performance must be assessed to ensure that products with qualified performance are used on the equipment to be foolproof. For this reason, it is necessary to study the corr...

AI Technical Summary

Problems solved by technology

This test bench can only carry out the dynamic performance test of the damper, which is affected by the servo control valve, and the static characteristics of the damper are unstable and have poor precision

Moreover, the test bench cannot eliminate the influence of the damper's own gravity on the test results, nor can it prevent the deflection of the damper

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