Hydraulic fatigue test system for pressure container

Abstract

A pressure vessel fatigue test system belongs to pressure vessel test technical field, comprising oil circuit pressure device, pressurizer, weight relieving motion, and measuring and control system. The oil circuit pressure device, pressurizer, weight relieving motion consists of pump linked by pipeline and oil pump driven by electric machinery, solenoid valve, overflow valve, water cooled oil cooler, back oil filtration device, oil tank and pipelines linked with them, the measuring and control system is consisted of electric contact pressure gauge, temperature sensor, pressure sensor, computer, controller for measurement and control temperature of pressure vessel, hydraulic oil, one-way throttle valve and high pressure filtration device are fitted with pipeline linked with solenoid valve and the container, stabilization tank is fitted with oil return pipe linked to solenoid valve and oil tank. The invention is suitable for fatigue test of pressure vessel containing impurity within and fairly high pressure needed and reconstruction to present pressure vessel fatigue test device.

Description

technical field [0001] The invention belongs to the technical field of pressure vessel testing, and relates to hydraulic fatigue test equipment for pressure vessels. Background technique [0002] For pressure vessels subjected to alternating loads, in order to ensure their performance, it is necessary to carry out a fatigue test on the pressure vessel, that is, pressurize and depressurize the vessel repeatedly according to the specified pressure until the number of repeated pressurization and depressurization reaches a certain number So far, this has been used as one of the criteria for the safe use of pressure vessels. In the past, the test devices used for fatigue tests on pressure vessels were generally constructed according to the test procedures recommended by GB / T9252. It is damaged early, and the high-pressure fluid from the inside of the container is not controlled during pressure relief and reversing, resulting in great impact and noise. Although the proportional ...

AI Technical Summary

Problems solved by technology

In the past, the test devices used for fatigue tests on pressure vessels were generally built according to the test procedures recommended by GB / T9252. Early damage, and the high-pressure fluid from the inside of the container is not controlled during pressure relief and reversing, resulting in great impact and noise

Although the proportional electromagnetic overflow valve is used to improve the hydraulic flow, the pressure relief speed can be controlled, but the control is complicated, and the problem that the electromagnetic valve is easy to wear still exists.

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